CN210289764U - Gas monitoring system and Christmas tree - Google Patents
Gas monitoring system and Christmas tree Download PDFInfo
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- CN210289764U CN210289764U CN201920858148.7U CN201920858148U CN210289764U CN 210289764 U CN210289764 U CN 210289764U CN 201920858148 U CN201920858148 U CN 201920858148U CN 210289764 U CN210289764 U CN 210289764U
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Abstract
The utility model provides a gaseous monitored control system and production tree relates to oil field exploitation technical field. The gas monitoring system is used for detecting the gas leakage state of the Christmas tree and comprises a gas detector and an emergency cut-off valve component; the emergency cut-off valve assembly comprises an emergency cut-off valve and an emergency cut-off valve processor, and the emergency cut-off valve is arranged between a main pipeline and a production pipeline of the Christmas tree; the gas detector is arranged in the atmospheric environment of an oil-gas well place and used for detecting the concentration of gas to be detected in the atmosphere; the gas detector is in communication connection with the emergency cut-off valve processor; the emergency cut-off valve processor is in communication connection with the emergency cut-off valve. The gas detector can sense the trace leakage of harmful gas, thereby being beneficial to protecting field workers. The Christmas tree comprises the gas monitoring system.
Description
Technical Field
The utility model relates to an oil field exploitation technical field especially relates to a gas monitoring system and production tree.
Background
In the process of oil field exploitation, the leakage of harmful gas is difficult to avoid. In the vicinity of the christmas tree, common easily-leaked harmful gases include hydrogen sulfide, carbon monoxide, methane, ethane, and the like. The harmful gas can damage the health of people, headache, dizziness and insomnia can be caused by contacting with the harmful gas with low concentration for a long time, and coma and even death can be caused by contacting with the harmful gas with high concentration for a short time. In addition, the harmful gases are often flammable and explosive, and the leakage of the harmful gases can cause fire and combustion explosion, thus being very easy to threaten the safety of personnel and property.
In the prior art, as shown in FIG. 1, a Christmas tree generally comprises a main pipeline 30 and a production pipeline 40, wherein the main pipeline 30 is communicated with an oil pipe. The main line 30 is provided with a main valve 50 and the production line 40 is provided with a production valve 60. The production line 40 is also provided with a pressure gauge 80 and a flow meter 90. The pressure gauge 80 is used in cooperation with the flow meter 90 to determine whether harmful gas is leaked. The pressure gauge 80 senses the pressure change in the pipeline, and the flow meter 90 senses the flow change in the pipeline. When the pressure in the pipeline suddenly decreases and the flow suddenly increases, the judgment of the pipeline leakage can be made.
However, when a trace amount of leakage occurs in the pipeline, the pressure gauge 80 and the flow meter 90 cannot sense the leakage in time, so that the health of the worker is damaged.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect among the prior art, the utility model aims to provide a gaseous monitored control system and production tree to overcome some not enough of prior art.
The utility model provides a gas monitoring system, which is used for detecting the gas leakage state of a Christmas tree and comprises a gas detector and an emergency cut-off valve component; the emergency cut-off valve assembly comprises an emergency cut-off valve and an emergency cut-off valve processor, and the emergency cut-off valve is arranged between a main pipeline and a production pipeline of the Christmas tree; the gas detector is arranged in the atmospheric environment of an oil-gas well place and is used for detecting the concentration of the gas to be detected in the atmosphere; the gas detector is in communication connection with the emergency cut-off valve processor; the emergency cut-off valve processor is in communication connection with the emergency cut-off valve.
The gas monitoring system as described above, optionally the gas detector is mounted on the outer wall of the pipeline and/or the outer wall of the vessel and/or the surface of the oil and gas well site.
The gas monitoring system as described above, optionally the slam-shut valve further comprises a production valve and/or a main valve of the christmas tree.
The gas monitoring system as described above, optionally, the gas detector is provided in plurality, and the plurality of gas detectors are distributed dispersedly.
The gas monitoring system as described above, optionally, the gas detector comprising a gas sensor, a gas detector processor, a gas detector memory, and a gas detector display; and the gas detector is in communication connection with a remote main control room.
The gas monitoring system as described above, optionally the slam shut valve assembly comprises an alarm unit.
The gas monitoring system as described above, optionally the slam shut valve assembly comprises a storage unit.
The gas monitoring system as described above, optionally the slam shut valve assembly comprises a display unit.
The gas monitoring system as described above, optionally, the emergency shutdown valve processor is communicatively coupled to a remote main control room.
The utility model also provides a production tree, including foretell gaseous monitored control system.
Because the gas detector is arranged in the atmospheric environment near the Christmas tree, the gas detector can sense the trace leakage of harmful gas, thereby being beneficial to protecting field workers.
Drawings
FIG. 1 is a schematic view of a gas monitoring system in the prior art;
fig. 2 is a schematic installation diagram of a gas monitoring system according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of area A of FIG. 2;
fig. 4 is a schematic view illustrating an installation of a gas monitoring system according to another embodiment of the present invention;
FIG. 5 is a schematic view of the emergency shut-off valve assembly of the present invention;
FIG. 6 is a schematic structural view of the gas detector of the present invention;
fig. 7 is a schematic structural diagram of the gas monitoring system of the present invention.
Reference numerals:
30: a main pipeline;
40: a production pipeline;
50: a main valve;
60: producing a valve;
80: a pressure gauge;
90: a flow meter;
100: a gas detector;
110: a gas sensor;
120: a gas detector processor;
130: a gas detector memory;
140: a gas detector display;
200: an emergency shut-off valve assembly;
210: emergency shut-off of the valve;
220: an emergency shut-off valve processor;
230: an alarm unit;
240: a storage unit;
250: a display unit;
300: a main pipeline;
400: a production pipeline;
500: a main valve;
600: producing a valve;
700: and a remote main control room.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
It should be noted that, in the description of the present invention, the terms "first" and "second" are only used for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings to enable those skilled in the art to more fully understand the present invention.
As shown in fig. 2 to 7, the present embodiment provides a gas monitoring system for detecting a gas leakage state of a christmas tree, including a gas detector 100, an emergency shut-off valve assembly 200; the slam shut valve assembly 200 comprises a slam shut valve 210 and a slam shut valve processor 220, the slam shut valve 210 being provided between the main line 300 and the production line 400 of the christmas tree; the gas detector 100 is arranged in the atmospheric environment of an oil-gas well place and is used for detecting the concentration of gas to be detected in the atmosphere; the gas detector 100 is in communication connection with the emergency cutoff valve processor 220; the slam shut valve processor 220 is communicatively coupled to the slam shut valve 210.
As shown in fig. 1, in order to detect a gas leakage state of the christmas tree, the prior art uses a pressure gauge 80 in cooperation with a flow meter 90 to determine whether harmful gas leaks. The pressure gauge 80 senses the pressure change in the pipeline, and the flow meter 90 senses the flow change in the pipeline. When the pressure in the pipeline suddenly decreases and the flow suddenly increases, the judgment of the pipeline leakage can be made.
The prior art cannot sense trace leakage of a pipeline in time and cannot judge a leakage place quickly and efficiently. This is because the pressure gauge 80 and flow meter 90 cannot select between minor leakage of hydrocarbons and normal float of hydrocarbon production when sensing slight pressure and flow changes. At the moment, the further judgment can be made only by long-term observation and field inspection, the process is slow, and the leaked harmful gas easily harms the body health of workers.
In the present embodiment, the gas detector 100 exposed to the atmosphere is used to sense the concentration of harmful gas in the atmosphere of the monitoring point, and the position of the gas detector 100 is the monitoring point. The gas detector 100 can sense the concentration of the gas to be detected in the atmosphere at the monitoring point in real time. Once the Christmas tree leaks, the concentration change of the gas to be detected can be detected, no matter the leakage amount of the gas to be detected. The gas to be measured may be hydrogen sulfide, carbon monoxide, natural gas, or the like.
When the air near the monitoring point contains a trace amount of gas to be detected, the gas detector 100 can sense the trace amount of leakage of the gas to be detected, and the leakage is not serious and the condition is not urgent, so that the Christmas tree can firstly keep normal production, but the worker needs to be informed to maintain immediately, and the verification time and the verification process of the trace amount of harmful gas leakage are shortened.
The staff should be equipped with safety protection measures to be patrolled and examined near this control point this moment, and protection measures can include gauze mask, gas mask etc.. When the harmful gas leaks in a small amount, the safety protection measures are equipped to be beneficial to the physical health of workers.
In the prior art, the micro leakage of harmful gas cannot be sensed automatically through an instrument, so that when the micro leakage of the harmful gas occurs, a worker cannot know that protective measures should be worn for routing inspection, and a poisoning event is easily caused.
When gas detector 100 senses that the concentration of the gas to be detected is extremely high, it can be determined that serious leakage of the gas to be detected has occurred near the monitoring point. Because of the severe leakage, tree production should be stopped immediately in order to avoid catastrophic events such as fire, explosion, or casualties.
Since the gas sensor 100 is communicatively connected to the emergency cut-off valve processor 220, the gas sensor processor 120 rapidly transmits a signal indicating a serious leakage of the harmful gas to the emergency cut-off valve processor 220, and since the emergency cut-off valve processor 220 is communicatively connected to the emergency cut-off valve 210, the emergency cut-off valve processor 220 can rapidly close the emergency cut-off valve 210.
The emergency cut-off valve 210 is disposed between the main line 300 and the production line 400 of the christmas tree, and the oil and gas production of the production line 400 can be stopped by closing the emergency cut-off valve 210, so as to prevent the harmful gas from further diffusing. Due to the full-automatic operation, the whole process consumes short time, and is beneficial to avoiding the occurrence of catastrophic events.
The technical scheme adopts a gas monitoring system for detecting the gas leakage state of the Christmas tree, and comprises a gas detector 100 and an emergency cut-off valve assembly 200; the emergency cutoff valve assembly 200 comprises an emergency cutoff valve 210 and an emergency cutoff valve processor 220, and the emergency cutoff valve 210 is arranged between a main pipeline 300 and a production pipeline 400 of the Christmas tree; the gas detector 100 is arranged in the atmospheric environment of an oil-gas well place and is used for detecting the concentration of gas to be detected in the atmosphere; the gas detector 100 is in communication connection with the emergency cutoff valve processor 220; by means of the technical means of the communication connection between the emergency cut-off valve processor 220 and the emergency cut-off valve 210, the gas detector 100 can sense the trace leakage of the harmful gas, so that the protection of field workers is facilitated, and the verification time and process of the trace leakage of the harmful gas are shortened; the gas detector 100 and the emergency cutoff valve processor 220 which are in communication connection, and the emergency cutoff valve processor 220 and the emergency cutoff valve 210 which are in communication connection are beneficial to fully automatically and rapidly stopping oil and gas production of the production pipeline 400 when harmful gas is seriously leaked, the whole process consumes short time, and the occurrence of disastrous events is favorably avoided.
Optionally, the gas detector 100 of the present embodiment is installed on the outer wall of the pipeline and/or the outer wall of the vessel and/or the surface of the oil and gas well site. As shown in FIG. 2, gas detector 100 is mounted on the outside wall of a pipeline; fig. 3 is a partially enlarged view of fig. 2.
The gas detector 100 can be installed on the outer wall of a pipeline and/or the outer wall of a container and/or the ground of an oil-gas well place, and because the installation positions of the gas detector 100 are all outside the pipeline and equipment, the normal production of the oil-gas well cannot be interfered by the gas detector 100 during installation, disassembly, maintenance and upgrading, and the operation cost of a gas monitoring system is favorably reduced.
The installation position of the gas detector 100 and the installation number of the gas detector 100 can be flexibly changed by the staff according to the maintenance record and the field situation, for example, the installation number of the gas detector 100 is increased in a high incidence of the recently discovered harmful gas leakage, which is beneficial to improving the monitoring performance of the gas monitoring system.
The technical scheme adopts the technical means that the gas detector 100 is arranged on the outer wall of a pipeline and/or the outer wall of a container and/or the ground of an oil-gas well place, so that the operation cost of the gas monitoring system is favorably reduced, and the monitoring performance of the gas monitoring system is favorably improved.
Optionally, the slam shut valve 210 of the present embodiment further comprises a production valve 600 and/or a main valve 500 of the tree. As shown in fig. 4, slam shut valve 210 may be one of main valves 500.
During production of an oil and gas well, crude oil and a portion of natural gas enter the christmas tree along an oil pipe in the wellbore, enter the production pipeline 400 through the main valve 500 on the main pipeline 300 of the christmas tree, and then enter the back pressure pipeline through the production valve 600 on the production pipeline 400. At least one main valve 500 is provided, but a high pressure well needs to be equipped with two main valves 500. Similarly, there is at least one production valve 600, but a high pressure oil and gas well needs to be equipped with two production valves 600 on the production line 400.
The slam shut valve 210 may be disposed between the main line 300 and the production line 400 independently of the main valve 500 and the production valve 600. However, since the valve itself is a high incidence point of the leakage of the harmful gas, the excessive number of valves increases the incidence of the leakage of the harmful gas.
The original production valve 600 is transformed to be upgraded to the emergency cut-off valve 210, and similarly, the original main valve 500 is transformed to be upgraded to the emergency cut-off valve 210, so that compared with the independent emergency cut-off valve 210, the number of the valves is reduced, and the occurrence rate of harmful gas leakage is favorably reduced; and the modification is usually lower than the installation cost, so the method is favorable for popularization and application.
According to the technical scheme, the technical means that the emergency cut-off valve 210 further comprises the production valve 600 and/or the main valve 500 of the Christmas tree is adopted, so that the total amount of the valves is favorably reduced, and the occurrence rate of harmful gas leakage is favorably reduced; and the modification is usually lower than the installation cost, so the method is favorable for popularization and application.
Optionally, there are a plurality of gas detectors 100 in this embodiment, and the plurality of gas detectors 100 are distributed dispersedly.
When a harmful gas leaks, generally, the closer to the leak point, the higher the concentration of the harmful gas in the atmosphere. Each gas detector 100 can sense the concentration of the harmful gas to be detected at the monitoring point where the gas detector is located. The staff can judge the approximate position of the leakage point rapidly by analyzing the concentration of harmful gas at each monitoring point of the dispersed distribution. The gas detector 100 with distributed distribution is beneficial for the staff to quickly judge the approximate position of the leakage point.
This technical scheme is owing to adopted the physical detector to have a plurality ofly, the technological means of a plurality of gas detection appearance 100 scatter distribution, is favorable to the staff to judge the approximate position of leakage point fast.
As shown in FIG. 6, optionally, the gas detector 100 of the present embodiment includes a gas sensor 110, a gas detector processor 120, a gas detector memory 130, and a gas detector display 140; the gas detector 100 is in communication with a remote main control room 700.
The gas sensor 110 can convert the concentration of a gas to be measured in the atmosphere into information that can be utilized by workers, instruments, computers, and the like. Different kinds of gas sensors 110 have different operating principles, but they are all advantageous for rapidly finding out a leak of harmful gas.
The gas sensor 110 in this embodiment may apply a laser absorption spectroscopy (TDLAS) technique to determine the concentration of the gas to be measured in the atmosphere. Specifically, the remote laser absorption spectrometer emits a laser beam having a specific wavelength, and the controller analyzes the returned reflected wave, thereby determining the concentration of the gas to be measured. The gas to be detected in the method can be natural gas, carbon monoxide, hydrogen sulfide, sulfur trioxide and the like.
The gas sensor 110 in this embodiment may also apply an infrared imaging gas detection technique to determine the concentration of the gas to be measured in the atmosphere. Specifically, it is possible to observe whether or not a gas leak is to be detected on an image using an optical gas imaging apparatus applying an infrared thermal imaging technique. The method can detect 20 kinds of dangerous gases in petroleum and petrochemical industries, is visual, efficient and safe, and is beneficial to popularization and application.
The gas sensor 110 in the present embodiment may be a constant potential electrolytic sensor, a conductivity type sensor, or the like.
The gas detector memory 130 is responsible for storing data of the concentration of the gas to be detected over time, and the gas detector memory 130 of each gas detector 100 is in communication with the gas detector processor 120 of the gas detector 100 to receive and store the concentration data of the gas to be detected from the gas sensor 110 of the gas detector 100. Alternatively, a worker may retrieve data from the gas monitor memory 130 through the remote control room 700 and all emergency shut-off valve assemblies 200 in the vicinity of the gas monitor 100. Gas detector memory 130 is provided to facilitate a worker in obtaining historical data of the concentration of the gas being measured.
Each gas detector 100 is equipped with a gas detector display 140, and the gas detector display 140 can display the concentration data of the gas to be detected in real time and also can display data stored in the gas detector memory 130 in the gas detector 100, such as a curve of the change of the concentration of the gas to be detected with time, which is beneficial for the staff to obtain the intuitive information of the concentration of the gas to be detected.
In the technical scheme, the gas detector 100 comprises a gas sensor 110, a gas detector processor 120, a gas detector memory 130 and a gas detector display 140; the technical means of the communication connection between the gas detector 100 and the remote main control room 700 is beneficial to quickly finding out the leakage of harmful gas and also beneficial to the staff to obtain the historical data and the visual information of the concentration of the gas to be detected.
As shown in fig. 5, the slam shut valve assembly 200 of the present embodiment optionally includes an alarm unit 230.
The alarm unit 230 of the emergency shut off valve assembly 200 includes an indicator light and a buzzer. The pilot lamp is through twinkling of an eye, and the buzzer is through buzzing, and the notice staff member is in the off-state its corresponding emergency cut-off valve 210, is favorable to the staff member to judge the on-off state of each emergency cut-off valve 210 fast.
The technical means that the emergency cut-off valve assembly 200 comprises the alarm unit 230 is adopted, so that the technical means is beneficial for workers to quickly judge the opening and closing states of the emergency cut-off valves 210.
As shown in fig. 5, the slam shut valve assembly 200 of the present embodiment optionally includes a storage unit 240.
The memory unit 240 of the slam shut valve assembly 200 may store historical operating conditions of the slam shut valve 210, such as the point in time when the slam shut valve 210 is closed and the point in time when the slam shut valve 210 is open. Memory unit 240 of slam shut valve assembly 200 may also store test data for all gas monitors 100 in its vicinity. The memory unit 240 of the emergency shut-off valve assembly 200 is provided to facilitate the operator to obtain historical operating status of the emergency shut-off valve 210 and historical data of the concentration of the surrounding gas to be measured.
Due to the technical means that the emergency cut-off valve assembly 200 comprises the storage unit 240, the technical scheme is beneficial for workers to obtain historical working states of the emergency cut-off valve 210 and historical data of the concentration of the peripheral gas to be measured.
As shown in fig. 5, the slam shut valve assembly 200 of the present embodiment optionally includes a display unit 250.
The display unit 250 may display the data of the concentration of the gas to be detected stored in all the gas detectors 100 near the emergency shutdown valve assembly 200 in real time, may also display the data stored in the storage unit 240 in the emergency shutdown valve assembly 200, and may also display the current and historical operating states of the emergency shutdown valve 210, thereby facilitating the staff to obtain intuitive information of the concentration of the gas to be detected and the current and historical operating states of the emergency shutdown valve 210, and facilitating the staff to analyze and judge the leakage point.
In the technical scheme, the technical means that the emergency cut-off valve assembly 200 comprises the display unit 250 is adopted, so that the method is favorable for the working personnel to obtain visual information of the concentration of the gas to be detected and the current and historical working state information of the emergency cut-off valve 210, and is favorable for the working personnel to analyze and judge the leakage points.
As shown in fig. 7, the emergency shutdown valve processor 220 of the present embodiment is optionally communicatively coupled to a remote master control room 700.
Since the emergency shut-off valve processor 220 is communicatively connected to the remote main control room 700, the operator in the remote main control room 700 can control the operation state of the emergency shut-off valve 210, such as opening or closing the emergency shut-off valve 210, through the emergency shut-off valve processor 220, which is beneficial for the operator in the remote main control room 700 to remotely control the emergency shut-off valve 210.
In addition, the operator in the remote main control room 700 can also call the data in the memory unit 240 of the emergency shutdown valve assembly 200 through the emergency shutdown valve processor 220, which is beneficial to quickly determine the approximate position of the leakage point when the harmful gas leaks. While the data in the memory unit 240 of the slam-shut valve assembly 200 also facilitates routine maintenance of the christmas tree by personnel.
According to the technical scheme, the technical means of communication connection between the emergency cut-off valve processor 220 and the remote main control room 700 is adopted, so that the emergency cut-off valve 210 can be remotely controlled by workers in the remote main control room 700, and the approximate position of a leakage point can be quickly judged when harmful gas leaks.
The embodiment also provides a Christmas tree which comprises the gas monitoring system.
According to the technical scheme, the Christmas tree adopts the gas monitoring system, the gas detector 100 is installed in the atmospheric environment near the Christmas tree, and the gas detector 100 can sense trace leakage of harmful gas, so that field workers can be protected.
The operation of the gas monitoring system is described in detail below.
When the concentration of the gas to be detected is smaller than or equal to the first critical value, the concentration of the gas to be detected is in the first level, at the moment, the leakage of the gas to be detected cannot be perceived at the monitoring point, the Christmas tree can continue to produce normally, and the staff can inspect normally.
When the concentration of the gas to be detected is greater than the first critical value and less than or equal to the second critical value, the concentration of the gas to be detected is in a second level, and the trace amount of leaked gas to be detected can be detected at the monitoring point. Since the leak is not severe and the situation is not urgent, the christmas tree can be kept producing normally first. Gas detector 100 sends out trace leakage information to remote control room 700, and remote control room 700 should send out a worker to a monitoring point for inspection.
The staff should be equipped with safety protection measures to be patrolled and examined near this monitoring point, and the protection measures can include gauze mask, gas mask etc..
After the staff arrives at the monitoring point, the gas detector display 140 reads the concentration data of the gas to be detected stored in the gas detector memory 130 and detects nearby pipelines and equipment.
When the operator finds a leak, the production line 400 in which the leak is located can be manually closed by slamming the valve 210 off. The slam shut valve 210 on the main line 300 may also be manually closed if a leak occurs on the main line 300.
When the concentration of the gas to be detected is greater than the second critical value and less than or equal to a third critical value, the concentration of the gas to be detected is in a third level, and it can be determined that the gas to be detected has leaked near the monitoring point. The gas detector 100 sends leakage information to the remote control room 700, and since the leakage is serious, the staff member in the remote control room 700 should immediately analyze the leakage, determine the suspected leakage point, and stop the production operation of the christmas tree where the suspected leakage point is located by emergency shut-off of the valve 210 by using remote control.
When the concentration of the gas to be detected is greater than the third critical value, the concentration of the gas to be detected is in the fourth level, and it can be determined that the gas to be detected leaks near the monitoring point. To avoid a fire, explosion or casualty due to a severe leak, the gas monitor 100 automatically transmits data immediately to all of the slam-shut valve processors 220 of all of the slam-shut valves 210 nearby, each processor immediately closes the slam-shut valve 210 it controls, and the tree stops production operations. Due to the full-automatic operation, the whole process consumes short time, and is beneficial to avoiding the occurrence of catastrophic events.
The gas meter 100 sends a critical leak message to the remote control room 700 and each closed emergency shut-off valve 210 sends a shut-off message to the remote control room 700. The remote control room 700 dispatches workers for field maintenance.
The alarm unit 230 of the emergency shut off valve assembly 200 includes an indicator light and a buzzer. The indicator lights flash, and the buzzer sounds to notify the operator that the corresponding emergency shut-off valve 210 is in a closed state. The operator may retrieve data from the memory unit 240 of the slam shut valve 210, including the time when the slam shut valve 210 is closed, the location information of all gas detectors 100 around the slam shut valve 210, and the concentration profile of harmful gases stored in all gas detector memories 130 around the slam shut valve 210 over time.
To facilitate reading of data by the operator, the slam shut valve assembly 200 includes a display unit 250. The display unit 250 may be a display screen. The staff can read the data quickly through the display screen and analyze the data. The working efficiency of workers is improved.
When maintenance is complete, each closed slam-shut valve 210 can be reopened and the tree resumes operation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A gas monitoring system for detecting the gas leakage state of a Christmas tree is characterized by comprising a gas detector and an emergency cut-off valve component; the emergency cut-off valve assembly comprises an emergency cut-off valve and an emergency cut-off valve processor, and the emergency cut-off valve is arranged between a main pipeline and a production pipeline of the Christmas tree; the gas detector is arranged in the atmospheric environment of an oil-gas well place and is used for detecting the concentration of the gas to be detected in the atmosphere; the gas detector is in communication connection with the emergency cut-off valve processor; the emergency cut-off valve processor is in communication connection with the emergency cut-off valve.
2. The gas monitoring system of claim 1, wherein the gas detector is mounted on an outer wall of a pipeline and/or an outer wall of a vessel and/or on the surface of an oil and gas well site.
3. The gas monitoring system of claim 1, wherein the slam-shut valve further comprises a production valve and/or a main valve of the tree.
4. The gas monitoring system of claim 1, wherein the plurality of gas detectors are distributed in a distributed manner.
5. The gas monitoring system of claim 1, wherein the gas detector comprises a gas sensor, a gas detector processor, a gas detector memory, and a gas detector display; and the gas detector is in communication connection with a remote main control room.
6. The gas monitoring system of claim 1, wherein the slam shut valve assembly includes an alarm unit.
7. The gas monitoring system of claim 1, wherein the emergency shut-off valve assembly comprises a storage unit.
8. The gas monitoring system of claim 1, wherein the emergency shut-off valve assembly comprises a display unit.
9. The gas monitoring system of claim 1, wherein the slam shut valve processor is communicatively coupled to a remote main control room.
10. A tree comprising a gas monitoring system according to any one of claims 1-9.
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| CN201920858148.7U CN210289764U (en) | 2019-06-10 | 2019-06-10 | Gas monitoring system and Christmas tree |
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| CN201920858148.7U CN210289764U (en) | 2019-06-10 | 2019-06-10 | Gas monitoring system and Christmas tree |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065371A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Gas monitoring system and Christmas tree |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065371A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Gas monitoring system and Christmas tree |
| CN112065371B (en) * | 2019-06-10 | 2025-02-07 | 中国石油天然气股份有限公司 | Gas Monitoring System and Christmas Tree |
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