CN113464760A - Quick plugging device for pipeline hydrostatic test and use method thereof - Google Patents
Quick plugging device for pipeline hydrostatic test and use method thereof Download PDFInfo
- Publication number
- CN113464760A CN113464760A CN202110774551.3A CN202110774551A CN113464760A CN 113464760 A CN113464760 A CN 113464760A CN 202110774551 A CN202110774551 A CN 202110774551A CN 113464760 A CN113464760 A CN 113464760A
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- China
- Prior art keywords
- pipeline
- shaft rod
- test
- plugging device
- expansion block
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
- F16L55/1141—Plugs the plug being made of elastic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/115—Caps
- F16L55/1152—Caps fixed by screwing or by means of a screw-threaded ring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Pipe Accessories (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A quick plugging device for a pipeline hydrostatic test and a using method thereof comprise a shaft rod, an expansion block, a sealing rubber ring and a pressure ring, wherein the shaft rod is provided with a round table, the shaft rod on one side of the round table is a conical surface, the shaft rod on the other side of the round table is provided with threads, and a through hole is formed in the shaft rod; the expansion block is matched with the conical surface of the shaft rod, and the sealing rubber ring and the pressure ring are sequentially sleeved on the shaft rod on the other side of the circular truncated cone. Compared with the prior art, the invention has the beneficial effects that: the invention does not need to carry out secondary processing on the pipeline during pressure test plugging. The plugging device of the invention does not damage the pipeline and wastes no pipes. The plugging device is convenient and quick to use, good in plugging effect, reusable and beneficial to construction.
Description
Technical Field
The invention relates to the technical field of pipeline installation, in particular to a quick plugging device for a pipeline hydrostatic test and a using method thereof.
Background
With the rapid development of industrial economy and the advancement of building science and technology, in the pipeline installation engineering, a pressure test is an important link for pipeline installation acceptance. The conventional pressure test method is to weld a blind plate, a water injection pipe, a water drain pipe and the like at the end of the pipeline, and to cut off the auxiliary components after the pressure test is finished. The method not only consumes the material of the pipeline body, but also wastes time and materials.
Disclosure of Invention
The invention aims to provide a quick plugging device for a pipeline hydrostatic test and a using method thereof. The device is simple and easy to operate, flexible and convenient to use and suitable for requirements of various working conditions and different spaces.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quick plugging device for a pipeline hydrostatic test comprises a shaft rod, an expansion block, a sealing rubber ring and a pressing ring, wherein a round table is arranged on the shaft rod, the shaft rod on one side of the round table is a conical surface, a thread is arranged on the shaft rod on the other side of the round table, and a through hole is formed in the shaft rod; the expansion block is matched with the conical surface of the shaft rod, and the sealing rubber ring and the pressure ring are sequentially sleeved on the shaft rod on the other side of the circular truncated cone.
The expansion blocks are 2-5 blocks, and the outer side surfaces of the expansion blocks are knurled surfaces.
The device is suitable for pipelines with the inner diameter of 20 mm-100 mm, and the test pressure is less than or equal to 5 MPa.
A use method of a quick plugging device for a pipeline hydrostatic test specifically comprises the following steps:
1) placing the expansion block at the minimum end of the conical surface of the shaft lever and hooping by a retaining ring;
2) sequentially loading the shaft lever with the expansion block, the sealing rubber ring and the compression ring into the port of the pressure test pipeline;
3) the locking nut is screwed at the outer end of the shaft lever, so that the conical surface of the shaft lever moves towards the outer side of the opening of the pressure test pipeline, the expanding block is expanded by the conical surface, and the expanding block with the knurled surface is pressed against the inner wall of the pressure test pipeline to generate enough friction force to resist the axial pressure of the pressure in the pipeline to the plugging device;
4) and the compression ring is compressed when the locking nut is screwed, and the sealing rubber ring is extruded to radially expand and tightly cling to the inner wall of the pressure test pipeline, so that the pressure test liquid in the pressure test pipeline is sealed.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention does not need to carry out secondary processing on the pipeline during pressure test plugging.
2) The plugging device of the invention does not damage the pipeline and wastes no pipes.
3) The plugging device is convenient and quick to use, good in plugging effect, reusable and beneficial to construction.
Drawings
Fig. 1 is an assembly view of the quick plugging device for hydraulic pressure test of the pipeline.
In fig. 1: 1 axostylus axostyle, 2 lock nut, 3 flat pads, 4 clamping rings, 5 sealing rubber circle, 6 blooms, 7 retaining rings, 8 pressure testing pipelines.
FIG. 2 is a schematic view of the present invention in a hydraulic test.
In fig. 2: 9 water injection valves, 10 exhaust valves, 11 pressure gauges, 12 tee joints, 13 plugging devices, 14 drain valves and 8 pressure test pipelines.
Detailed Description
The present invention is described in detail below, but it should be noted that the practice of the present invention is not limited to the following embodiments.
As shown in fig. 1, the quick plugging device for the hydraulic test of the pipeline comprises a shaft lever 1, an expansion block 6, a sealing rubber ring 5 and a pressing ring 4, wherein a round table is arranged on the shaft lever 1, the shaft lever on one side of the round table is a conical surface, a thread is arranged on the shaft lever on the other side of the round table, and a through hole is formed in the shaft lever 1; the expansion block 6 is matched with the conical surface of the shaft rod 1, and the sealing rubber ring 5 and the pressing ring 4 are sequentially sleeved on the shaft rod on the other side of the circular truncated cone.
In the embodiment, the expansion blocks 6 are 3 blocks, and the outer side surfaces of the expansion blocks 6 are machined into knurled surfaces.
The device is suitable for pipelines with the inner diameter of 20 mm-100 mm, and the test pressure is less than or equal to 5 MPa.
A use method of a quick plugging device for a pipeline hydrostatic test specifically comprises the following steps:
1) three expansion blocks 6 are arranged at the position of the minimum end of the conical surface of the shaft lever 1 and are hooped by a retaining ring 7;
2) sequentially loading the shaft lever 1 with the expansion block 6, the sealing rubber ring 5 and the pressure ring 4 into a port of a pressure test pipeline 8, and abutting the pressure ring 4 against the end of a pipe;
3) the locking nut 2 is screwed at the outer end of the shaft lever 1, so that the conical surface of the shaft lever 1 moves towards the outer side of the opening of the pressure test pipeline 8, the expanding block is expanded by the conical surface, the knurled surface of the expanding block is tightly pressed on the inner wall of the pressure test pipeline 8, and strong friction force is generated to resist the thrust of liquid in the pressure test pipeline 8 to the plugging device;
4) the pressing ring is pressed when the locking nut is screwed, the sealing rubber ring is extruded, the sealing rubber ring is radially expanded, the inner wall of the pressure test pipeline 8 is pressed, and the pressure test liquid in the pressure test pipeline 8 is sealed. The purpose of pressure test of the pipeline is achieved;
5) after the plugging devices at the two ends of the pressure test pipeline 8 are installed, accessories such as a valve pressure gauge water injection pipeline and the like are connected, and a pressure test can be started (as shown in figure 2);
6) after the test is finished, the locking nut 2 is unscrewed, and the shaft lever 1 is slightly knocked, so that the device can be taken out for recycling.
The invention has good plugging and sealing effect and accurate pipeline pressure test. The operation is very convenient, only needs to twist lock nut 1 soon to realize sealed to the shutoff of pressure testing pipeline mouth, and the outer end of axostylus axostyle 1 is equipped with the screw thread and is used for twisting lock nut 1 soon, secondly can be used for connecting tee bend, valve etc. of experimental usefulness.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept within the technical scope of the present invention.
Claims (4)
1. A quick plugging device for a pipeline hydrostatic test is characterized by comprising a shaft rod, an expansion block, a sealing rubber ring and a pressing ring, wherein the shaft rod is provided with a round table, the shaft rod on one side of the round table is a conical surface, the shaft rod on the other side of the round table is provided with threads, and a through hole is formed in the shaft rod; the expansion block is matched with the conical surface of the shaft rod, and the sealing rubber ring and the pressure ring are sequentially sleeved on the shaft rod on the other side of the circular truncated cone.
2. The quick plugging device for the hydraulic test of the pipeline according to claim 1, wherein the expansion blocks are 2-5 blocks, and the outer side surface of each expansion block is a knurled surface.
3. The quick plugging device for the hydraulic test of the pipeline according to claim 1, wherein the device is suitable for the pipeline with the inner diameter of 20 mm-100 mm, and the test pressure is less than or equal to 5 MPa.
4. The use method of the quick plugging device for the pipeline hydraulic test according to any one of claims 1-3 is characterized by comprising the following steps:
1) placing the expansion block at the minimum end of the conical surface of the shaft lever and hooping by a retaining ring;
2) sequentially loading the shaft lever with the expansion block, the sealing rubber ring and the compression ring into the port of the pressure test pipeline;
3) screwing a locking nut at the outer end of the shaft lever to enable the conical surface of the shaft lever to move towards the outer side of the opening of the pressure test pipeline, expanding the expansion block by the conical surface, and enabling the expansion block with the knurled surface to tightly press the inner wall of the pressure test pipeline;
4) and the compression ring is compressed when the locking nut is screwed, and the sealing rubber ring is extruded to radially expand and tightly cling to the inner wall of the pressure test pipeline, so that the pressure test liquid in the pressure test pipeline is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110774551.3A CN113464760A (en) | 2021-07-08 | 2021-07-08 | Quick plugging device for pipeline hydrostatic test and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110774551.3A CN113464760A (en) | 2021-07-08 | 2021-07-08 | Quick plugging device for pipeline hydrostatic test and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113464760A true CN113464760A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110774551.3A Pending CN113464760A (en) | 2021-07-08 | 2021-07-08 | Quick plugging device for pipeline hydrostatic test and use method thereof |
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| CN (1) | CN113464760A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015546A (en) * | 2021-10-23 | 2022-02-08 | 美东汇成生命科技(昆山)有限公司 | PCR single tube with strong sealing performance |
| KR102474992B1 (en) * | 2022-03-22 | 2022-12-05 | 강봉중 | Jig apparatus for water pressure test |
-
2021
- 2021-07-08 CN CN202110774551.3A patent/CN113464760A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015546A (en) * | 2021-10-23 | 2022-02-08 | 美东汇成生命科技(昆山)有限公司 | PCR single tube with strong sealing performance |
| CN114015546B (en) * | 2021-10-23 | 2022-10-28 | 美东汇成生命科技(昆山)有限公司 | PCR single tube with strong sealing performance |
| KR102474992B1 (en) * | 2022-03-22 | 2022-12-05 | 강봉중 | Jig apparatus for water pressure test |
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