A new type of pipeline pressure testing device

Abstract

This utility model discloses a novel pipeline pressure testing device, including a clamp fixed to the pipeline and an expansion plug connected to the clamp. The expansion plug seals the end opening of the pipeline. The clamp has a connecting protrusion, which is connected to the expansion plug via a screw. The expansion plug has an O-ring. The expansion plug is inserted into the pipeline port to seal it. Then, the clamp is tightened onto the pipeline, thus maintaining the sealing state of the pipeline port. Afterwards, the pipeline is pressure tested. Compared with existing technologies, this design eliminates the need for flange bonding, significantly reducing material and labor costs, eliminating waiting time, increasing pressure testing efficiency, and significantly reducing overall costs.

Description

Technical Field

[0001] This utility model relates to fiberglass products, specifically to a testing device for fiberglass pipes. Background Technology

[0002] Existing pressure testing methods for fiberglass pipes require first bonding fiberglass flanges to both ends of the pipe, and then assembling steel blind flanges after they have fully cured before pressure testing can be carried out.

[0003] The existing technical disadvantages of pressure testing for FRP pipes include: the need to first bond FRP flanges, which wastes flange and adhesive materials; the bonding process itself is time-consuming; and the flanges typically require 24 hours to cure after bonding, resulting in a long pressure testing cycle. Thus, the overall cost is high and efficiency is low. Utility Model Content

[0004] The technical problem solved by this utility model is that the existing pressure test of FRP pipes requires first bonding FRP flanges, and then performing the pressure test after curing, which is time-consuming and inefficient.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel pipeline pressure testing device, including a connector fixed on the pipeline and a sealing element connected to the connector. The sealing element seals the end opening of the pipeline and has a water injection hole and an air vent hole. The connector is a clamp clamped on the pipeline and has a connecting protrusion. The connecting protrusion is connected to the sealing element by a screw. The sealing element extends into the pipeline, and an O-ring is provided between the inner wall of the pipeline and the sealing element.

[0006] According to the above technical solution, no flanges are needed at either end of the pipeline. The sealing element with an O-ring is inserted into the pipeline port to seal it. Then, the clamp is tightened onto the pipeline, maintaining the seal at the pipeline port. Next, water is injected into the pipeline through the injection port at one end, while venting occurs through the vent port of the seal at the other end. After venting, the vent port is sealed. Water is then injected into the pipeline through the injection port again for pressure testing.

[0007] The seal consists of a strip and a plug connected together. The length of the strip is greater than the outer diameter of the plug. The connecting protrusion of the clamp is connected to the strip by a screw.

[0008] The strip and the expansion plug are connected by bolts.

[0009] The outer wall of the expansion plug is provided with a sealing ring groove, and the O-ring is placed in the sealing ring groove.

[0010] Alternatively, the outer diameter of the expansion plug is smaller than the inner diameter of the pipe, with the difference between the outer diameter of the expansion plug and the inner diameter of the pipe being 1 mm.

[0011] The inner diameter of the clamp is larger than the outer diameter of the pipe, and the difference between the inner diameter of the clamp and the outer diameter of the pipe is 5 mm.

[0012] Compared with the prior art, the present invention has the following technical effects:

[0013] First, no flange bonding is required;

[0014] Second, it greatly reduces the consumption of materials and labor;

[0015] Third, there is no waiting time, and the pressure testing efficiency is high;

[0016] Fourth, the overall cost is significantly reduced. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of a new type of pipeline pressure testing device;

[0019] Figure 2 for Figure 1 The left view;

[0020] Figure 3 This is a schematic diagram of the sealing of port 10 of the expansion plug 40.

[0021] Explanation of symbols in the diagram:

[0022] 10. Pipelines;

[0023] 20. Clamp; 21. Connecting protrusion;

[0024] 30. Screw;

[0025] 40. Expansion plug; 41. Strip component; 42. Bolt; 43. O-ring. Detailed Implementation

[0026] Combination Figures 1 to 3 A novel pipeline pressure testing device includes a connector fixed on a pipeline 10 and a sealing element connected to the connector. The sealing element seals the end opening of the pipeline and has a water injection hole and an air vent. The connector is a clamp 20 clamped on the pipeline and has a connecting protrusion 21. The connecting protrusion is connected to the sealing element by a screw 30. The sealing element extends into the pipeline and an O-ring 43 is provided between the inner wall of the pipeline and the sealing element.

[0027] The seal includes a strip 41 and a plug 40 connected together. The length of the strip is greater than the outer diameter of the plug. The connecting protrusion 21 of the clamp is connected to the strip by a screw 30.

[0028] The strip 41 is connected to the expansion plug 40 by bolt 42.

[0029] The outer wall of the expansion plug 40 is provided with a sealing ring groove, and the O-ring 43 is set in the sealing ring groove.

[0030] The outer diameter of the expansion plug 40 is smaller than the inner diameter of the pipe 10, and the difference between the outer diameter of the expansion plug and the inner diameter of the pipe is 1 mm.

[0031] The inner diameter of clamp 20 is larger than the outer diameter of pipe 10, and the difference between the inner diameter of clamp and the outer diameter of pipe is 5 mm.

[0032] In actual operation, the expansion plug 40, equipped with an O-ring 43, is inserted into the port of pipe 10 to seal the pipe port. Then, the clamp 20 is tightened onto pipe 10, thereby maintaining the sealing state of the expansion plug 40 at the pipe port. Afterwards, water is injected into the pipe through the water injection hole at one end of pipe 10, and air is released through the vent hole of the expansion plug at the other end of the pipe. After venting is complete, the vent hole is sealed. Water is then continued to be injected into pipe 10 through the water injection hole for pressure testing.

[0033] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A novel pipeline pressure testing device, comprising a connector fixed on a pipeline (10) and a sealing element connected to the connector, the sealing element sealing the end opening of the pipeline, the sealing element having a water injection hole and an air vent hole, characterized in that: The connector is a clamp (20) that is clamped onto the pipe. The clamp has a connecting protrusion (21), which is connected to the seal via a screw (30). The seal extends into the pipe, and an O-ring (43) is provided between the inner wall of the pipe and the seal.

2. The novel pipe pressure testing apparatus of claim 1, wherein: The seal includes a strip (41) and a plug (40) connected together. The length of the strip is greater than the outer diameter of the plug. The connecting protrusion (21) of the clamp is connected to the strip by a screw (30).

3. The novel pipeline pressure testing device as described in claim 2, characterized in that: The strip (41) and the expansion plug (40) are connected by bolts (42).

4. The novel pipe pressure testing apparatus of claim 2, wherein: The outer wall of the expansion plug (40) is provided with a sealing ring groove, and the O-ring (43) is set in the sealing ring groove.

5. The novel pipe pressure testing apparatus as claimed in claim 2, wherein: The outer diameter of the expansion plug (40) is smaller than the inner diameter of the pipe (10), and the difference between the outer diameter of the expansion plug and the inner diameter of the pipe is 1 mm.

6. The novel pipe pressure testing apparatus of claim 1, wherein: The inner diameter of the clamp (20) is larger than the outer diameter of the pipe (10), and the difference between the inner diameter of the clamp and the outer diameter of the pipe is 5 mm.

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