CN209743874U - Prefabricated steel lining PTFE or PO pipe's installation on-spot pressure testing device - Google Patents
Prefabricated steel lining PTFE or PO pipe's installation on-spot pressure testing device Download PDFInfo
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- CN209743874U CN209743874U CN201821978173.0U CN201821978173U CN209743874U CN 209743874 U CN209743874 U CN 209743874U CN 201821978173 U CN201821978173 U CN 201821978173U CN 209743874 U CN209743874 U CN 209743874U
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- sleeve
- adjusting
- bolt
- adjusting block
- plug
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- 238000012360 testing method Methods 0.000 title claims abstract description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 11
- 239000010959 steel Substances 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 title claims abstract description 9
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
A prefabricated steel lining PTFE or PO pipe installation site pressure test device is structurally characterized in that a hollow is arranged in the middle of a flange plate, and an adjustable plug mechanism is connected in the hollow; the adjustable plug mechanism is formed by connecting a pressure spring in a sleeve; a through hole is formed in the middle of the top of the sleeve, a connecting rod is connected in the through hole, and a connecting plug is arranged at the head end of the connecting rod; the tail end of the connecting rod is connected with the head end of the pressure spring through a transition plate; the pressure spring adjusting structure comprises two adjusting blocks in sliding connection; the two adjusting blocks are spliced to form a cylinder shape; the sliding connection surfaces of the two adjusting blocks form an acute angle with the axis of the cylinder; the two adjusting blocks are arranged in the sleeve; the first adjusting block is fixedly connected to the tail end of the pressure spring, and the bottom surface of the second adjusting block is in sliding connection with the bottom surface of the sleeve; a threaded through hole is formed in the rear portion of the sleeve wall, the axis of the threaded through hole is perpendicular to the axis of the adjusting block, a bolt is screwed in the threaded through hole, and the front end of the bolt is embedded in the side face of the second adjusting block and rotates freely; the rear end of the bolt is connected with a handle; the sleeve is connected in the hollow of the flange.
Description
Technical Field
The utility model belongs to the technical field of the engineering construction, specifically a be suitable for installation witnessed inspections device of prefabricated steel lining PTFE and PO pipe.
Background
the steel-lined plastic pipe is a steel-plastic composite pipe, and is made up by using general carbon steel pipe as base body, lining with thermoplastic plastic pipe with excellent chemical stability, cold-drawing compounding or rotational moulding. The chemical plant has more corrosive strong media such as strong acid, strong base and the like, and the plastic-lined steel pipe has the characteristics of corrosion resistance and the like, so the chemical plant is widely applied to chemical plants. The steel-lined plastic pipe inherits the advantages of the steel pipe and the plastic pipe and simultaneously abandons the disadvantages of the steel pipe and the plastic pipe. In chemical engineering construction (e.g., involving silicone projects), steel-lined plastic pipes represent a large proportion. The inner liner of the steel-lined plastic pipe is mainly divided into polyolefin PO and tetrafluoroethylene PTFE, the specification is DN 25-DN 250, and the length of the pipeline is 500mm, 1000mm, 2000mm,2500mm, 3000mm, 4000mm, 6000 mm.
In engineering construction, steel-lined pipelines with different specifications and different lining materials are gathered and counted according to a drawn single line diagram, a design requirement is provided, steel-lined plastic pipes are processed by a professional factory, and then the prefabricated pipelines are assembled and connected on site. The pipeline is usually preassembled and assembled on site, and after preassembly, the pipeline needs to be subjected to on-site pressure testing and then assembled. Generally, the pressure test adopts a hydrostatic test method, for a common pipeline, a plug is adopted to plug an outlet of the pipeline, water is injected into an inlet of the pipeline to pressurize, a pressure gauge connected to the plug is observed, and whether water leaks from joints of branch pipes of the pipeline or not is observed. Because the PO or PTFE is lined in the steel-lined plastic pipe, the traditional plug needs to be pounded into the pipe orifice hard, and the lining at the position of the pipe orifice can be damaged. And a sealing structure of the blind flange needs to be added when the blind flange is used for plugging.
Disclosure of Invention
in order to solve the existing problems, the utility model provides a new pressure testing device specifically is:
An installation site pressure test device for a prefabricated steel lining PTFE or PO pipe comprises a flange plate, wherein a hollow part is arranged in the middle of the flange plate, and an adjustable plug mechanism is connected in the hollow part; adjustable end cap mechanism includes: the plug, the connecting rod, the pressure spring, the sleeve and the pressure spring adjusting structure;
The pressure spring is connected in the sleeve; a through hole is formed in the middle of the top of the sleeve, a connecting rod is connected in the through hole, and a connecting plug is arranged at the head end of the connecting rod; the tail end of the connecting rod is connected with the head end of the pressure spring through a transition plate;
the pressure spring adjusting structure comprises two adjusting blocks in sliding connection; the two adjusting blocks are spliced to form a cylinder shape; the sliding connection surfaces of the two adjusting blocks form an acute angle with the axis of the cylinder; the outer diameter of the cylinder is smaller than the inner diameter of the sleeve, and the two adjusting blocks are arranged in the sleeve; the first adjusting block is fixedly connected to the tail end of the pressure spring, and the bottom surface of the second adjusting block is in sliding connection with the bottom surface of the sleeve; the rear part of the sleeve wall is provided with a threaded through hole, the axis of the threaded through hole is vertical to the axis of the adjusting block, a bolt is rotationally connected in the threaded through hole, and the front end of the bolt is embedded in the side surface of the second adjusting block and freely rotates; the rear end of the bolt is connected with a handle.
The sleeve is connected in the hollow of the flange.
furthermore, a plurality of groups of bolt through holes are formed in the flange plate, and the distance between each group of bolt through holes and the axis of the flange plate is different, so that the flange plate is suitable for connecting and mounting different pipe orifice flanges.
The plug is in a round table shape, and the larger end of the plug is connected with the connecting rod. The plug is solid, and a pressure sensor is connected to the surface of the smaller end of the plug.
The bottom surface of the second adjusting block is provided with a strip-shaped groove, the head end of the strip-shaped groove penetrates through the side wall of the second adjusting block, and the tail end of the strip-shaped groove is provided with a deep groove; the central line of the strip-shaped groove passes through the axis of the second adjusting block, and the axis of the deep groove passes through the axis of the second adjusting block.
The bolt is arranged in the strip-shaped groove, the front end of the bolt is connected with a circular stop block, and the circular stop block is arranged in the deep groove.
The bottom surface of the sleeve is provided with an inwards concave sliding groove, and the second adjusting block is arranged in the sliding groove.
The principle and the using method of the pressure testing device on the construction site are that the flange plate is adopted to install the plug into the pipe orifice. Due to the action of the pressure spring, the plug and the pipe orifice are tightly pressed, and simultaneously, the PTFE or PO layer of the lining is not damaged by pounding the pipe orifice. The force exerted on the plug by the pressure spring is adjusted by sliding between the two adjusting blocks, and the force exerted on the plug is manually adjusted by combining the reading of a pressure sensor (the sensor can be a patch type electronic pressure sensor and can be connected to measuring instruments such as an electronic pressure gauge and the like through a signal wire). The outer wall of the plug can be connected with an elastic sealing layer.
even if extreme conditions occur, the water pressure in the pipe is increased rapidly, the energy caused by the water pressure increase can be absorbed by the pressure spring through the plug, and the dangerous condition that the plug is ejected is avoided.
the utility model discloses it is convenient to use, safe and reliable is suitable for the pressure testing of steel lining plastic tube, and is less to the lining damage.
drawings
Fig. 1 is a schematic view of the structure principle of the present invention;
In the figure: the device comprises a flange plate 1, a bolt through hole 2, a plug 3, a sleeve 4, a connecting rod 5, a pressure spring 6, a transition plate 7, a first adjusting block 8, a second adjusting block 9, a bolt 10 and a handle 11; a strip-shaped groove 12, a deep groove 13, a round stop 14 and a sliding groove 15.
Detailed Description
The present disclosure is further described with reference to the following drawings and detailed description:
Referring to fig. 1, the pressure testing device for the installation site of the prefabricated steel lining PTFE or PO pipe comprises a flange plate, wherein the middle of the flange plate is provided with a hollow part, and an adjustable plug mechanism is connected in the hollow part; adjustable end cap mechanism includes: the plug, the connecting rod, the pressure spring, the sleeve and the pressure spring adjusting structure;
the pressure spring is connected in the sleeve; a through hole is formed in the middle of the top of the sleeve, a connecting rod is connected in the through hole, and a connecting plug is arranged at the head end of the connecting rod; the tail end of the connecting rod is connected with the head end of the pressure spring through a transition plate;
the pressure spring adjusting structure comprises two adjusting blocks in sliding connection; the two adjusting blocks are spliced to form a cylinder shape; the sliding connection surfaces of the two adjusting blocks form an acute angle with the axis of the cylinder; the outer diameter of the cylinder is smaller than the inner diameter of the sleeve, and the two adjusting blocks are arranged in the sleeve; the first adjusting block is fixedly connected to the tail end of the pressure spring, and the bottom surface of the second adjusting block is in sliding connection with the bottom surface of the sleeve; the rear part of the sleeve wall is provided with a threaded through hole, the axis of the threaded through hole is vertical to the axis of the adjusting block, a bolt is rotationally connected in the threaded through hole, and the front end of the bolt is embedded in the side surface of the second adjusting block and freely rotates; the rear end of the bolt is connected with a handle.
The sleeve is connected in the hollow of the flange.
And a plurality of groups of bolt through holes are formed in the flange plate, and the distance between each group of bolt through holes and the axis of the flange plate is different.
The plug is in a round table shape, and the larger end of the plug is connected with the connecting rod. The plug is solid, and a pressure sensor is connected to the surface of the smaller end of the plug.
the bottom surface of the second adjusting block is provided with a strip-shaped groove, the head end of the strip-shaped groove penetrates through the side wall of the second adjusting block, and the tail end of the strip-shaped groove is provided with a deep groove; the center line of the strip-shaped groove passes through the axis of the second adjusting block, and the axis of the deep groove passes through the axis of the second adjusting block; the bolt is arranged in the strip-shaped groove, the front end of the bolt is connected with a circular stop block, and the circular stop block is arranged in the deep groove.
the bottom surface of the sleeve is provided with an inwards concave sliding groove, and the second adjusting block is arranged in the sliding groove.
Claims (3)
1. an installation site pressure test device for a prefabricated steel lining PTFE or PO pipe is characterized by comprising a flange plate, wherein the middle of the flange plate is provided with a hollow part, and an adjustable plug mechanism is connected in the hollow part; adjustable end cap mechanism includes: the plug, the connecting rod, the pressure spring, the sleeve and the pressure spring adjusting structure;
The pressure spring is connected in the sleeve; a through hole is formed in the middle of the top of the sleeve, a connecting rod is connected in the through hole, and a connecting plug is arranged at the head end of the connecting rod; the tail end of the connecting rod is connected with the head end of the pressure spring through a transition plate;
The pressure spring adjusting structure comprises two adjusting blocks in sliding connection; the two adjusting blocks are spliced to form a cylinder shape; the sliding connection surfaces of the two adjusting blocks form an acute angle with the axis of the cylinder; the outer diameter of the cylinder is smaller than the inner diameter of the sleeve, and the two adjusting blocks are arranged in the sleeve; the first adjusting block is fixedly connected to the tail end of the pressure spring, and the bottom surface of the second adjusting block is in sliding connection with the bottom surface of the sleeve; the rear part of the sleeve wall is provided with a threaded through hole, the axis of the threaded through hole is vertical to the axis of the adjusting block, a bolt is rotationally connected in the threaded through hole, and the front end of the bolt is embedded in the side surface of the second adjusting block and freely rotates; the rear end of the bolt is connected with a handle;
The sleeve is connected in the hollow part of the flange plate;
A plurality of groups of bolt through holes are formed in the flange plate, and the distance between each group of bolt through holes and the axis of the flange plate is different;
the plug is in a circular truncated cone shape, and the larger end of the plug is connected with the connecting rod;
the plug is solid, and a pressure sensor is connected to the surface of the smaller end of the plug.
2. The prefabricated steel-lined PTFE or PO pipe installation site pressure testing device according to claim 1, wherein a strip-shaped groove is formed in the bottom surface of the second adjusting block, the head end of the strip-shaped groove penetrates through the side wall of the second adjusting block, and a deep groove is formed in the tail end of the strip-shaped groove; the center line of the strip-shaped groove passes through the axis of the second adjusting block, and the axis of the deep groove passes through the axis of the second adjusting block;
The bolt is arranged in the strip-shaped groove, the front end of the bolt is connected with a circular stop block, and the circular stop block is arranged in the deep groove.
3. The prefabricated steel-lined PTFE or PO pipe installation site pressure testing device according to claim 2, wherein the bottom surface of the sleeve is provided with an inwards concave sliding groove, and the second adjusting block is arranged in the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821978173.0U CN209743874U (en) | 2018-11-29 | 2018-11-29 | Prefabricated steel lining PTFE or PO pipe's installation on-spot pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821978173.0U CN209743874U (en) | 2018-11-29 | 2018-11-29 | Prefabricated steel lining PTFE or PO pipe's installation on-spot pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743874U true CN209743874U (en) | 2019-12-06 |
Family
ID=68701686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821978173.0U Active CN209743874U (en) | 2018-11-29 | 2018-11-29 | Prefabricated steel lining PTFE or PO pipe's installation on-spot pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209743874U (en) |
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2018
- 2018-11-29 CN CN201821978173.0U patent/CN209743874U/en active Active
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