CN112629608A - Underwater flowmeter with recoverable electronic bin - Google Patents
Underwater flowmeter with recoverable electronic bin Download PDFInfo
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- CN112629608A CN112629608A CN202011494111.4A CN202011494111A CN112629608A CN 112629608 A CN112629608 A CN 112629608A CN 202011494111 A CN202011494111 A CN 202011494111A CN 112629608 A CN112629608 A CN 112629608A
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- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 175
- 238000007789 sealing Methods 0.000 claims description 52
- 230000005611 electricity Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 7
- 230000002285 radioactive effect Effects 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 claims 1
- 238000009529 body temperature measurement Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 9
- 230000035515 penetration Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
- G01F15/063—Indicating or recording devices for remote indication using electrical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
本发明公开了一种具有可回收电子仓的水下流量计，包括用于流体测量的流量计主体和用于数据采集和传输的电子仓模块，二者相互独立设置，流量计主体上设有多相流计量装置、温度测量装置和压力测量装置，以及集线仓模块，电子仓模块包括可回收电子仓，各个测量装置的测量信号输出端分别通过缆线连接至集线仓模块，集线仓模块通过测量信号电飞线与可回收电子仓连接，以将测量信号传输给所述可回收电子仓。本发明的有益效果：流量计主体和可回收电子仓相互独立，流量计主体上的各测量装置的测量信号输出缆线统一连接至集线仓，通过一根测量信号电飞线与可回收电子仓连接，方便信号传导和可回收电子仓的回收。
The invention discloses an underwater flowmeter with a recyclable electronic bin, comprising a flowmeter body for fluid measurement and an electronic bin module for data acquisition and transmission, the two are arranged independently of each other, and the flowmeter body is provided with A multiphase flow metering device, a temperature measuring device, a pressure measuring device, and a wiring bin module, the electronic bin module includes a recyclable electronic bin, and the measurement signal output ends of each measuring device are respectively connected to the wiring bin module through cables, and the wiring The bin module is connected to the recyclable electronic bin through the electrical flying wire of the measurement signal, so as to transmit the measurement signal to the recyclable electronic bin. The beneficial effects of the present invention are as follows: the main body of the flowmeter and the recyclable electronic bin are independent of each other, and the measurement signal output cables of each measuring device on the main body of the flowmeter are uniformly connected to the wiring bin, and a measurement signal electric flying wire is connected with the recyclable electronic bins. The silo connection is convenient for signal conduction and recycling of the recyclable electronic silo.
Description
Technical Field
The invention belongs to the field of flowmeters, and particularly relates to an underwater flowmeter with a recyclable electronic bin.
Background
The underwater multiphase flowmeter is a new device for measuring the well flow of an ocean oil and gas well, is in the process of continuous development, and is particularly suitable for measuring the well flow of a remote well. Unlike multiphase flow meters used on land or on drilling platforms in general, subsea multiphase flow meters are exposed to extremely harsh environments, not only to meet basic measurement requirements, but also to withstand high pressure, corrosive, subsea environments. The subsea multiphase flow meter is installed at a subsea manifold for measurement and then transmits signal data to a platform, which generally comprises a measurement module and an electronics bay module for signal processing, storage and transmission. The measuring module comprises a measuring flow passage, a temperature and pressure measuring assembly arranged on the measuring flow passage, and a multiphase flow measuring assembly consisting of a radioactive source and a detector. Patent document CN106706047A discloses a Ba 133-based underwater multiphase flowmeter, in which an electronic cabin assembly is connected to a probe assembly in a waterproof and sealed manner, and the overall structure is compact. However, because subsea flowmeters are expensive, it is economically important to explore the recoverable technology of subsea flowmeters. The electronic bin module is an important component of the underwater flowmeter, can be completely recycled, has important significance in realizing the recovery of the electronic bin module, and is also a research basis of the later-stage full-flowmeter recovery technology.
Disclosure of Invention
In view of the above, the present invention provides an underwater flow meter with a recoverable electronics pod.
The technical scheme is as follows:
an underwater flowmeter with a recoverable electronic bin comprises a flowmeter main body for fluid measurement and an electronic bin module for data acquisition and transmission, wherein the flowmeter main body is provided with a multiphase flow metering device, a temperature measuring device and a pressure measuring device,
the flowmeter main body and the electronic bin module are arranged independently, and the electronic bin module comprises a recyclable electronic bin;
the flowmeter is characterized in that a line concentration bin module is arranged on the flowmeter main body, measuring signal output ends of the multiphase flow metering device, the temperature measuring device and the pressure measuring device are respectively connected to the line concentration bin module through cables, the line concentration bin module is connected with the recoverable electronic bin through measuring signal electric flying lines so as to transmit measuring signals to the recoverable electronic bin, and the measuring signal electric flying lines are connected with the recoverable electronic bin through plug-in type butt joints.
By adopting the design, the flowmeter has the advantages that the flowmeter main body and the recoverable electronic bin are mutually independent, the measuring signal output cables of the measuring devices on the flowmeter main body are uniformly connected to the wire collecting bin, and are connected with the recoverable electronic bin through the measuring signal electric flying wire, so that the signal conduction and the recovery of the recoverable electronic bin are facilitated.
As a preferred technical scheme, the electronic bin module further comprises an electronic bin fixing barrel which is fixedly arranged on the underwater manifold, wherein the electronic bin fixing barrel comprises a vertically arranged barrel body, the upper end of the barrel body is provided with an opening, and the lower end of the barrel body is provided with an annular barrel bottom;
the electronic bin fixing barrel is internally provided with the recyclable electronic bin, and a guide mechanism is arranged between the outer wall of the recyclable electronic bin and the electronic bin fixing barrel;
the upper end of the recyclable electronic bin is provided with a T-shaped handle.
By adopting the design, the underwater electronic cabin fixing barrel has the advantages that the electronic cabin fixing barrel is fixedly arranged on the underwater manifold, a fixing point is provided for underwater installation of the recyclable electronic cabin, the structure is simple, and the underwater electronic cabin fixing barrel is convenient to install with the recyclable electronic cabin.
As a preferred technical scheme, a signal input socket and a signal output socket are arranged on the recoverable electronic bin, the signal input socket is used for being connected with a connector of the measurement signal electric flying wire, and the signal output socket is used for being connected with an SCM electric flying wire connector;
the electronic bin fixing barrel is further connected with two plug fixing seats, and socket protection caps are respectively inserted into the two plug fixing seats.
By adopting the design, the recyclable electronic bin can be quickly connected and disconnected with the upstream flow meter main body and the downstream data communication module, and the socket protective cap is arranged for protecting the signal input socket and the signal output socket when the recyclable electronic bin is disconnected.
As a preferred technical solution, the above guiding mechanism includes a bell mouth connected to the upper end of the cylinder, a guiding notch parallel to the axis direction of the cylinder is formed on the bell mouth, the guiding notch extends upwards to the upper edge of the bell mouth, and a guiding plate is arranged on the outer wall of the recoverable electronic bin and located in the guiding notch.
By adopting the design, the horn mouth is convenient for the butt joint of the recoverable electronic bin and the electronic bin fixing barrel, and the guide plate and the guide notch are matched for guiding.
As a preferred technical solution, the line concentration bin module includes a line concentration bin connected to the flowmeter main body, a line concentration joint assembly is disposed on the line concentration bin, a signal input end of the line concentration joint assembly is connected to measurement signal output ends of the multiphase flow metering device, the temperature measuring device and the pressure measuring device through a cable, and a signal output end of the line concentration joint assembly is connected to the measurement signal electric fly line.
By adopting the design, the signals of the measuring devices are connected through the same cable, so that the signals can be conveniently transmitted to the recyclable electronic bin, and the wire collecting bin can be conveniently disconnected from the recyclable electronic bin.
As a preferred technical scheme, the flowmeter main body comprises a flowmeter tube body, wherein a fluid metering channel is arranged in the flowmeter tube body;
the multiphase flow metering device comprises a radiation source assembly and a detector assembly, wherein the radiation source assembly and the detector assembly are opposite to each other and are respectively arranged on two sides of the central line of the fluid metering channel;
the outer side wall of the fluid metering channel is provided with a plane area parallel to the axis of the fluid metering channel, a probe mounting cavity is formed in the flowmeter tube body and is perpendicular to the plane area, the plane area is connected with a probe mounting flange, the probe mounting flange is fixedly connected with the hollow cylindrical wire collecting bin, the side wall of the wire collecting bin is provided with a probe mounting through hole corresponding to an inner hole of the probe mounting flange, and the probe mounting through hole is communicated with the probe mounting flange and the probe mounting cavity;
the detector assembly comprises a columnar probe, a front end sealing assembly and a probe cover assembly, the probe is positioned in the probe mounting flange, the front end of the probe is positioned in the probe mounting cavity, the probe is connected with the probe mounting cavity in a sealing mode through the front end sealing assembly, the rear end of the probe is positioned in the probe mounting through hole, a probe inlet hole is formed in the wire collecting bin, right opposite to the rear end of the probe, and is sealed by the probe cover assembly, and the probe cover assembly abuts against the rear end of the probe so that the front end of the probe abuts against the front end sealing assembly, and therefore the probe is fixed;
the rear end of the probe is provided with a probe plug, and the probe plug is connected with the line concentration connector assembly through a cable.
By adopting the design, the installation position is required to be reserved on the flowmeter pipe body when the line concentration bin is directly connected with the flowmeter pipe body, but the line concentration bin is connected with the probe installation flange, so that the structure is compact, the probe is conveniently connected with the cable of the line concentration bin, and the probe is conveniently installed through the probe inlet hole.
As a preferred technical scheme, the probe inlet hole is a stepped hole, the inner end of the probe inlet hole is a smaller hole, and the outer end of the probe inlet hole is a larger hole;
the probe sealing cover assembly comprises a probe sealing cover, the probe sealing cover comprises a large-diameter section, a middle-diameter section and a small-diameter section, the outer diameters of the large-diameter section, the middle-diameter section and the small-diameter section are sequentially reduced from outside to inside, the large-diameter section, the middle-diameter section and the small-diameter section are sequentially connected with a same axial line to form the probe sealing cover, the large-diameter section and the middle-diameter section are adapted to and attached to corresponding side walls of the probe inlet hole, the inner end face of the large-diameter section is attached to a step of the probe inlet hole, and the large-diameter section is;
the small-diameter section of the probe sealing cover extends into the line concentration bin and is opposite to the rear end of the probe, a guide sleeve is connected between the small-diameter section and the rear end of the probe, one end of the guide sleeve is sleeved on the small-diameter section, the other end of the guide sleeve is sleeved on the probe and is embedded in the probe mounting through hole, a leaning step is arranged on the inner wall of one end of the guide sleeve corresponding to the probe, and the leaning step leans against the rear end of the probe;
the rear end of the probe is provided with the probe plug, the probe plug is positioned in the guide sleeve, and a wire passing hole is formed in the guide sleeve close to the probe plug;
and a waterproof sealing structure is arranged between the probe sealing cover and the probe inlet hole.
By adopting the design, the probe sealing cover is connected with the side wall of the line concentration bin, the probe is fixedly positioned through the guide sleeve, the structure is simple, the installation is convenient, and the cable is convenient to penetrate between the probe plug and the line concentration bin due to the design of the line passing hole in the guide sleeve.
As a preferred technical scheme, one end of the wire collecting bin is provided with an end stepped hole, the end stepped hole is covered with a flange type wire collecting bin sealing cover in a buckling manner, the wire collecting bin sealing cover is in sealing fit with the end stepped hole, and the wire collecting bin sealing cover is connected with the wire collecting bin through a bolt;
the wire concentration joint component comprises a core electricity fixing seat, a core electricity cabin penetrating piece, an electricity flying wire fixing seat and a right-angle terminal;
the core electric fixing seat is cylindrical, the core electric fixing seat is arranged on the wire collecting bin sealing cover in a penetrating mode and is in sealing fit with the wire collecting bin sealing cover, and the electric flying wire fixing seat is cylindrical and is sleeved on the core electric fixing seat;
the electric flying wire fixing seat is internally provided with the core electric penetration bin piece, a signal input end of the core electric penetration bin piece is connected with the probe plug through a cable, a signal output end of the core electric penetration bin piece is connected with the right-angle terminal, and the right-angle terminal extends out of the electric flying wire fixing seat and is in sealing fit with the electric flying wire fixing seat.
By adopting the design, the measuring signal output cables of the measuring devices are concentrated to the line concentration joint assembly, and the mounting structure of each component of the line concentration bin is compact.
Compared with the prior art, the invention has the beneficial effects that: the flowmeter main body and the recoverable electronic bin are mutually independent, measuring signal output cables of the measuring devices on the flowmeter main body are uniformly connected to the wire collecting bin, and are connected with the recoverable electronic bin through a measuring signal electric flying wire, so that signal conduction and recovery of the recoverable electronic bin are facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a flow meter module;
FIG. 3 is a schematic view of the structure of the flowmeter body and the manifold, radiation source assembly and detector assembly;
FIG. 4 is an enlarged view of the portion m of FIG. 3;
FIG. 5 is a schematic view of a recyclable electronic warehouse;
FIG. 6 is a schematic view of a corrosion resistant construction of a flowmeter body;
FIG. 7 is an enlarged view of the portion n of FIG. 6;
FIG. 8 is a schematic view of the venturi assembly installed in the flow meter tube.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1, an underwater flow meter with a recyclable electronic cartridge includes a flow meter body 100 for fluid measurement and an electronic cartridge module 500 for data acquisition and processing transmission, which are provided independently of each other. The flowmeter main body 100 is provided with a multiphase flow metering device, a temperature measuring device and a pressure measuring device.
As shown in fig. 2, the flowmeter body 100 includes a flowmeter body 110, and a fluid metering passage 120 is provided in the flowmeter body 110. The multiphase flow metering device comprises a radiation source assembly 200 and a detector assembly 300, wherein the radiation source assembly 200 and the detector assembly 300 are opposite to each other and are respectively arranged on two sides of the central line of the fluid metering channel 120. The temperature measuring device is a temperature differential gauge and the pressure measuring device is a pressure differential gauge, both of which are connected to the fluid metering channel 120.
The electronics compartment module 500 includes a recyclable electronics compartment 520.
The flowmeter is characterized in that a line concentration bin module 400 is arranged on the flowmeter main body 100, the line concentration bin module 400 comprises a line concentration bin 410, the line concentration bin 410 is connected with the flowmeter main body 100, a line concentration joint assembly is arranged on the line concentration bin 410, the signal input end of the line concentration joint assembly is respectively connected with the measuring signal output ends of the detector assembly 300, the temperature difference instrument and the pressure difference instrument through cables, and the signal output end of the line concentration joint assembly is electrically connected with the measuring signal through an electric flying line. The signal output end of the line concentration joint component is connected with the recoverable electronic bin 520 through a measuring signal electric flying line so as to transmit a measuring signal to the recoverable electronic bin 520, and the measuring signal electric flying line is connected with the recoverable electronic bin 520 through a plug-in butt joint.
As shown in fig. 2 and 3, a plane area 111 parallel to the axis of the fluid metering channel 120 is disposed on the outer side wall of the fluid metering channel 120, a probe mounting cavity 112 is disposed in the flowmeter tube 110, the probe mounting cavity 112 is perpendicular to the plane area 111, the plane area 111 is connected to a probe mounting flange 330, the probe mounting flange 330 is fixedly connected to a hollow cylindrical line concentrator 410, a probe mounting through hole is disposed in the side wall of the line concentrator 410 corresponding to the inner hole of the probe mounting flange 330, and the probe mounting through hole is communicated with the probe mounting flange 330 and the probe mounting cavity 112.
The probe assembly 300 comprises a columnar probe 310, a front end sealing assembly 320 and a probe cover assembly, wherein the probe 310 is located in the probe mounting flange 330, the front end of the probe 310 is located in the probe mounting cavity 112, the probe 310 is in sealing connection with the probe mounting cavity 112 through the front end sealing assembly 320, the rear end of the probe 310 is located in the probe mounting through hole, a probe inlet hole 411 is formed in the wire collecting bin 410 opposite to the rear end of the probe 310, the probe inlet hole 411 is sealed by the probe cover assembly, and the probe cover assembly abuts against the rear end of the probe 310 so that the front end of the probe abuts against the front end sealing assembly 320, and the probe 310 is fixed.
The front end sealing assembly 320 and the connection structure thereof with the probe mounting cavity 112 are prior art and are described in detail in patent document CN106706047A, and are not described herein again.
As shown in fig. 4, specifically, the probe inlet hole 411 is a stepped hole, an inner end of the probe inlet hole 411 is a smaller hole, and an outer end thereof is a larger hole. The probe cover assembly comprises a probe cover 420, the probe cover 420 comprises a large-diameter section, a medium-diameter section and a small-diameter section, the outer diameters of the large-diameter section, the medium-diameter section and the small-diameter section are sequentially reduced from outside to inside, the large-diameter section, the medium-diameter section and the small-diameter section are sequentially connected with a coaxial line to form the probe cover 420, the large-diameter section and the medium-diameter section are adapted and attached to corresponding side walls of the probe inlet hole 411, the inner end face of the large-diameter section is attached to a step of the probe inlet hole 411, and the large-diameter section is connected with the bottom wall of a.
The small-diameter section of the probe cover 420 extends into the line concentration bin 410 and is opposite to the rear end of the probe 310, a guide sleeve 340 is connected between the small-diameter section and the rear end of the probe 310, one end of the guide sleeve 340 is sleeved on the small-diameter section, the other end of the guide sleeve 340 is sleeved on the probe 310 and embedded in the probe installation through hole, the inner wall of one end, corresponding to the probe 310, of the guide sleeve 340 is provided with a leaning step 341, and the leaning step 341 leans against the rear end of the probe 310. The guide sleeve 340 is connected with the outer wall of the probe 310 through screws.
The outer wall of the small-diameter section of the probe cover 420 is provided with a strip-shaped blind hole 421, and the strip-shaped blind hole 421 is arranged along the axial direction of the probe cover 420. A limit bolt 421 is arranged on the guide sleeve 340 in a penetrating manner, and the screw head end of the limit bolt 421 extends into the strip-shaped blind hole 421. An insulating sleeve 344 is sleeved outside the guide sleeve 340, and the insulating sleeve 344 is positioned on the guide sleeve 340 where the limit bolt 421 penetrates.
A waterproof sealing structure is arranged between the probe cover 420 and the probe inlet 411, and comprises a first sealing structure and a second sealing structure. The first sealing structure is an O-ring 450, the O-ring 450 is sandwiched between a middle diameter section of the probe cover 420 and a smaller hole inner wall of the probe inlet hole 411, and there are two O-rings 450, and the two O-rings 450 are arranged along the axial direction of the probe cover 420.
The second sealing structure comprises an annular pad 451, the annular pad 451 is sleeved on the small-diameter section of the probe cover 420, the inner end surface of the middle-diameter section of the probe cover 420 is flush with the circumferential area of the inner end of the probe inlet 411 to form a combined arc-shaped surface, and the annular pad 451 is clamped between the combined arc-shaped surface and the guide sleeve 340.
The rear end of the probe 310 is provided with a probe plug 311, the probe plug 311 is positioned in the guide sleeve 340, and a waist-shaped wire passing hole 342 is formed on the guide sleeve 340 close to the probe plug 311. The cable of the probe plug 311 is connected to the hub assembly after passing through the wire passing hole 342.
One end of the wire collecting bin 410 is provided with an end stepped hole with a large outside and a small inside, the end stepped hole is communicated with an inner cavity of the wire collecting bin 410, a flange type wire collecting bin sealing cover 430 is covered on the end stepped hole in a buckling mode, the wire collecting bin sealing cover 430 is in sealing fit with the end stepped hole, and the wire collecting bin sealing cover 430 is connected with the wire collecting bin 410 through a bolt.
The line concentration joint assembly comprises a core electricity fixing seat 440, a core electricity penetration component 441, an electricity flying line fixing seat 442 and a right-angle terminal 443. The core electrical fixing seat 440 is cylindrical, the core electrical fixing seat 440 is arranged on the wire collecting bin sealing cover 430 in a penetrating mode and is in sealing fit with the wire collecting bin sealing cover, and the electrical flying wire fixing seat 442 is also cylindrical and is sleeved on the core electrical fixing seat 440. The electric flying wire fixing seat 442 is internally provided with a core electricity penetration bin part 441, a signal input end of the core electricity penetration bin part 441 is connected with the probe plug 311 and a measurement signal output end of the temperature difference instrument and the pressure difference instrument through cables, wherein signal output cables of the temperature difference instrument and the pressure difference instrument are respectively penetrated in a wire pipe, the wire pipe penetrates through the side wall of the wire collecting bin 410 and is in sealing connection with the wire pipe, and the inner cavity of the wire pipe is communicated with the inner cavity of the wire collecting bin 410. The signal output end of the core electrical penetration component 441 is connected with the right-angle terminal 443, the right-angle terminal 443 extends out of the electrical flying wire fixing seat 442 and is in sealing fit with the electrical flying wire fixing seat 442, and the right-angle terminal 443 is connected with a measurement signal electrical flying wire so as to conduct measurement signals of the temperature difference instrument, the differential pressure instrument and the detector assembly 300 to the data acquisition unit of the recoverable electronic bin 520.
As shown in fig. 1 and 5, the electronic cabin module 500 further includes an electronic cabin fixing barrel 510 for being fixedly installed on the underwater manifold, the electronic cabin fixing barrel 510 includes a vertically arranged barrel 512, an upper end of the barrel 512 is open, and a lower end is provided with an annular barrel bottom 511. The upper end of the cylinder 512 is fixedly connected with a bell mouth 513 arranged on the same central line, a guide notch 514 parallel to the axial direction of the cylinder 512 is arranged on the bell mouth 513, and the guide notch 514 extends upwards to the upper edge of the bell mouth 513.
The recoverable electronic bin 520 is arranged in the electronic bin fixing barrel 510, a guide plate 522 is arranged on the outer wall of the recoverable electronic bin 520, the guide plate 522 is located in the guide notch 514, and the guide plate 522 is matched with the guide notch 514 to form a guide mechanism.
The recyclable electronic bin 520 comprises an electronic bin shell 521, and a buffer pad 523 is arranged at the bottom of the electronic bin shell 521. The upper end of the recyclable electronic bin 520 is provided with a T-shaped handle.
The inside data acquisition transmission module that is provided with of electron storehouse casing 521, this data acquisition transmission module include data acquisition unit and dual-energy changer, and electron storehouse casing 521 up end is equipped with signal input socket and signal output socket, and signal input socket and signal output socket are connected with data acquisition transmission module. The signal input socket is used for being connected with the measuring signal electric flying wire connector, and the signal output socket is used for being connected with the SCM electric flying wire connector.
The electronic bin fixing barrel 510 is further connected with two plug fixing seats 530, socket protection caps 540 are respectively inserted into the two plug fixing seats 530 in a removable manner, and when the signal input socket and the signal output socket are not connected with the electric flying wire, the two socket protection caps 540 are respectively connected with the signal input socket and the signal output socket to protect and prevent corrosion.
When the underwater flow meter is used, the underwater flow meter is installed on an underwater pipe network, the electronic bin fixing barrel 510 is welded on the periphery of an underwater manifold, the measurement signal electric flying wire connector is inserted into one plug fixing seat 530, and the SCM electric flying wire connector is inserted into the other plug fixing seat 530. The recoverable electronic bin 520 and the two socket protective caps 540 are placed in the hanging basket and put to the water bottom together, the ROV robot holds the T-shaped handle to place the recoverable electronic bin 520 into the electronic bin fixing barrel 510, then the measuring signal electric flying wire connector and the SCM electric flying wire connector are respectively inserted into the signal input socket and the signal output socket, and then the two socket protective caps 540 are respectively inserted into the corresponding plug fixing seats 530, so that the installation of the recoverable electronic bin 520 is completed. During recovery, the two socket protection caps 540 are taken down and placed in the hanging basket, then the measuring signal electrical flying wire connector and the SCM electrical flying wire connector are respectively pulled out and inserted into the corresponding plug fixing seats 530, and finally the ROV robot takes out the recoverable electronic bin 520 and puts the recoverable electronic bin into the hanging basket for recovery.
In addition, to improve the corrosion resistance of the flowmeter and increase the service life, the flowmeter pipe body 110 is provided with a corrosion resistant structure. As shown in fig. 6 and 7, the fluid metering channel 120 includes an inlet section 123 and a venturi section 121, which are arranged in the direction of fluid flow and connected to each other, the inlet section 123 and the venturi section 121 being connected by a channel step surface 122, and a venturi assembly being arranged in the venturi section 121. The wall of the fluid metering channel 120 corresponding to the venturi section 121 is provided with a pressure guiding hole, and the pressure guiding hole is communicated with the fluid metering channel 120. The inner wall of the fluid metering channel 120 and the inner wall of the pressure guiding hole are covered with a continuous corrosion-resistant metal layer 130 in a build-up welding manner, the corrosion-resistant metal layer 130 extends to the inlet end of the flowmeter body 110, an inlet butt joint ring 131 is formed on the end face of the inlet end of the flowmeter body 110, and an inlet butt joint ring groove 132 is formed in the surface of the inlet butt joint ring 131, which faces away from the flowmeter body 110. The corrosion-resistant metal layer 130 is welded to the flowmeter body 110. The material of the flowmeter body 110 is a first metal, and the material of the corrosion-resistant metal layer 130 is a second metal, and the second metal has stronger erosion resistance and corrosion resistance than the first metal.
As shown in fig. 8, the venturi assembly includes a venturi tube 140, the venturi tube 140 including a venturi body 141, an outlet end of the venturi body 141 having an end flange 142 integrally formed therewith. The outlet end of the flowmeter body 110 is provided with a notch adapted to the end flange 142, the venturi tube 140 is inserted into the venturi section 121, the inlet end of the venturi tube 141 abuts against the passage step surface 122, the inlet of the venturi tube 141 and the liquid inlet section 123 form a continuous equal-diameter flow channel, and the end flange 142 falls into the notch. The venturi 140 is connected between the fluid metering channels 120 in a sealing manner. The end flange 142 is connected to the flowmeter pipe body 110 by bolts, and the venturi tube 140 and the flowmeter pipe body 110 are fixedly attached to each other, as described in patent document CN 106706047A. The end surface of the end flange 142 facing away from the venturi tube 141 is provided with an outlet end butting ring groove 143.
Specifically, a first sealing structure 151, a second sealing structure 152, a third sealing structure 153 and a flange sealing structure are distributed between the outer wall of the venturi tube 140 and the inner wall of the fluid metering channel 120 from the inlet to the outlet of the venturi tube 140.
The first sealing structure 151 is located near the inlet end of the venturi 140, and the second sealing structure 152 and the third sealing structure 153 are located outside the two ends of the throat of the venturi 140.
A first annular cavity 157 and a second annular cavity 158 are further disposed between the outer wall of the venturi tube 140 and the inner wall of the fluid metering channel 120, wherein the first annular cavity 157 is located between the first sealing structure 151 and the second sealing structure 152, and the first annular cavity 157 corresponds to an inlet of the inner cavity of the venturi tube 140. A second annular chamber 158 is located between the second seal 152 and the third seal 153, the second annular chamber 158 corresponding to the throat of the inner chamber of the venturi 140.
The pressure guiding holes comprise a low-pressure hole 102 and a high-pressure hole 101, wherein the low-pressure hole 102 is located on the wall of the flowmeter body 110 corresponding to the first annular cavity 157, the low-pressure hole 102 is communicated with the first annular cavity 157, and a plurality of low-pressure holes 102 are distributed around the first annular cavity 157. The high-pressure measuring holes 101 are located on the wall of the flowmeter body 110 corresponding to the second annular cavity 158, the high-pressure measuring holes 101 are communicated with the second annular cavity 158, and a plurality of high-pressure measuring holes 101 are distributed around the second annular cavity 158.
The flange seal arrangement includes a fourth seal arrangement 154 and a fifth seal arrangement 155, wherein the fifth seal arrangement 155 is located between the junction of the venturi body 141 and the end flange 142 and the junction of the venturi section 121 and the recess. The fourth seal structure 154 is located between the fifth seal structure 155 and the third seal structure 153, and is adjacent to the fourth seal structure 154.
As for the specific structure of the seal structure between the venturi tube 140 and the fluid metering passage 120 and the arrangement of the first annular chamber 157 and the second annular chamber 158, reference may be made to the arrangement of the flow meter described in patent document CN 106706047A.
In order to ensure the effect, the build-up welding thickness of the corrosion-resistant metal layer 130 and the inlet butt-joint ring 131 is not less than 3 mm. The first metal may be carbon steel and the second metal may be a nickel-based alloy, such as alloy designation F625.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (8)
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