Pipeline pressure testing device

Abstract

The utility model discloses a pipeline pressure testing device, which belongs to the technical field of pipeline detection and comprises a workbench, a first inner plug column and an electric push rod are fixed on the side surface of the top end of the workbench, a second inner plug column is fixed at the output end of the electric push rod, and sealing assemblies are arranged on the side surfaces of the first inner plug column and the second inner plug column. A liquid conveying groove is formed in the center of the first inner plug column in a penetrating mode, a liquid inlet pipe is fixed to the outer side wall of the first inner plug column, and a liquid guide assembly is arranged at the end, away from the center of the workbench, of the first inner plug column. According to the utility model, the port sealing effect of the straight pipeline piece is effectively improved through the arranged sealing assembly, the problem that the port sealing effect of the straight pipeline piece is reduced due to certain plastic deformation generated by long-time use of an elastic sealing piece is avoided, and the pressure test inspection data of the straight pipeline piece is ensured to have higher accuracy all the time; meanwhile, the overall pressure test detection structure is simple, water in the straight pipeline piece can be guided out through the arranged liquid guiding assembly, and recycling and reusing are convenient.

Description

Technical Field

[0001] This utility model relates to the field of pipeline testing technology, and in particular to a pipeline pressure testing device. Background Technology

[0002] A pipeline is a device made up of pipes, pipe fittings, valves, etc., used to transport gas, liquid, or fluid containing solid particles. Before a pipeline is put into use, it needs to be pressure tested to determine whether the pipeline's strength and sealing performance meet the requirements, so as to ensure that the pipeline system can operate safely and stably.

[0003] For example, Chinese Patent Publication No. CN212228601U discloses a rapid pressure testing machine for the inner cavity of a pipe, including a machine body. An exhaust port is provided at the lower end of the machine body. An upper sealing plug is fixedly sleeved on the outside of the exhaust port. A pipe is sleeved on the outside of the upper sealing plug. A lower sealing plug is sleeved on the lower end of the pipe. A water tank is fixedly installed at the lower end of the lower sealing plug. A connecting rod is fixedly installed on the upper end of the water tank. This utility model, through the design of a fixed connection between a clamping plate and a positioning rod, allows the positioning rod to drive the movement of the clamping plate. During pipe installation, simply pull the positioning rod outward, then sleeve the pipe on the outside of the lower sealing plug, and then release the positioning rod. Through the extension and contraction of the spring, the pipe can be clamped and fixed. A cylinder drives the pipe upward, causing the pipe to engage with the upper sealing plug, thus sealing the pipe. This completes the pipe installation. The installation method does not require external force, making it more convenient and faster.

[0004] In the aforementioned application, the pipe is sealed by squeezing the pipe port with a rubber sealing plug. However, after prolonged use, the rubber sealing plug is prone to wear and deformation. The local contact between the rubber sealing plug and the pipe port is prone to certain plastic deformation, which may lead to a decrease in the sealing effect of the pipe port. At the same time, after the test is completed, it is difficult to collect and drain the water in the pipe and recycle it, which may easily lead to the waste of water resources.

[0005] Therefore, it is necessary to provide a pipeline pressure testing device to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a pipeline pressure testing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems: a pipeline pressure testing device, comprising a workbench, a first inner plug and an electric push rod fixed on the top side of the workbench, the output end of the electric push rod facing the center of the workbench and a second inner plug fixed on the output end of the electric push rod, the first and second inner plugs being symmetrically distributed at both ends of the workbench, sealing components being provided on the sides of both the first and second inner plugs, a liquid infusion groove penetrating through the center of the first inner plug, an inlet pipe communicating with the liquid infusion groove being fixed on the outer side wall of the first inner plug, and a liquid guiding component being provided on the end of the first inner plug away from the center of the workbench.

[0008] As a further embodiment of this utility model, the sealing assembly includes placement grooves fixed on the outer walls of the first inner plug and the second inner plug, and an annular rubber block is fitted and fixed in the placement groove, with a cavity opened inside the annular rubber block.

[0009] As a further embodiment of this utility model, both the first inner plug and the second inner plug are provided with air supply pipes, one end of the air supply pipe is connected to the cavity, and the other end of the air supply pipe is connected to an air nozzle.

[0010] As a further embodiment of this utility model, the liquid guiding assembly includes an outlet pipe fixed in the end of the infusion tank away from the center of the workbench. The outlet pipe is connected to the infusion tank. A sealing seat is fixed on the outlet pipe. The interior of the sealing seat is provided with a threaded groove that communicates with the interior of the outlet pipe. A sealing bolt is threadedly connected to the interior of the threaded groove.

[0011] As a further embodiment of this utility model, a thin rubber film is fitted onto the surface of the screw of the sealing bolt.

[0012] As a further embodiment of this utility model, the bottom end of the outlet tube extends into the bottom of the workbench, a liquid collection tank is provided directly below the outlet tube, and multiple symmetrically distributed support rods are fixed on the bottom surface of the workbench.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting up sealing components, the sealing effect of the straight pipe fittings is effectively improved, avoiding wear and deformation between the elastic seal and the pipe fitting port, extending the service life of the elastic seal, avoiding the problem of reduced sealing effect at the pipe fitting port, avoiding the risk of water leakage from the pipe fitting port, ensuring that the pressure test data of the straight pipe fittings always has high accuracy, and avoiding the overall pressure test structure being relatively simple, reducing investment costs and subsequent maintenance costs.

[0015] 2. After the pressure test of the straight pipe fitting is completed, the water inside the straight pipe fitting can be discharged through the set liquid guiding component, which facilitates the centralized collection of water, avoids water loss, facilitates recycling and reuse, and saves water resources. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the liquid guiding component of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0021] Figure 5 This is a schematic cross-sectional view of the first inner plug of this utility model;

[0022] Figure 6 This is a cross-sectional view of the second inner plug of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Sealing assembly; 101. Annular rubber block; 102. Cavity; 103. Placement groove; 104. Gas supply pipe; 105. Gas nozzle; 2. Liquid guiding assembly; 201. Sealing seat; 202. Threaded groove; 203. Sealing bolt; 204. Outlet pipe; 3. First inner plug; 4. Second inner plug; 5. Worktable; 6. Liquid inlet tank; 7. Electric push rod; 8. Straight pipe fitting; 9. Liquid inlet pipe; 10. Support leg rod. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Please see Figure 1-6This utility model provides a pipeline pressure testing device, including a workbench 5. A first inner plug 3 and an electric push rod 7 are fixed on the top side of the workbench 5. The output end of the electric push rod 7 is oriented towards the center of the workbench 5, and a second inner plug 4 is fixed on the output end of the electric push rod 7. The first inner plug 3 and the second inner plug 4 are symmetrically distributed at both ends of the workbench 5. A sealing assembly 1 is provided on the side of both the first inner plug 3 and the second inner plug 4. A liquid infusion tank 6 is penetrated through the center of the first inner plug 3. An inlet pipe 9 communicating with the liquid infusion tank 6 is fixed on the outer wall of the first inner plug 3. A liquid guiding component 2 is provided on the end of column 3 furthest from the center of workbench 5. In use, by placing the straight pipe fitting 8 on the top side of workbench 5, one end of the straight pipe fitting 8 can be fitted onto the outside of the first inner plug column 3. At this time, the second inner plug column 4 is located outside the straight pipe fitting 8. By manually adjusting the end of the straight pipe fitting 8 to align with the second inner plug column 4, and then using the electric push rod 7 to move the second inner plug column 4 towards the center of workbench 5, the electric push rod 7 drives the second inner plug column 4 to insert into the other end of the straight pipe fitting 8, thereby pre-positioning the straight pipe fitting 8. Then, by setting... Two sets of sealing components 1 seal both ends of the straight pipe fitting 8. The synchronous expansion of these two sets of sealing components 1 causes the straight pipe fitting 8 to automatically horizontally position. An external water pump connects to the inlet pipe 9, which delivers water to the delivery tank 6. The water then flows into the interior of the straight pipe fitting 8, creating a certain amount of hydraulic pressure inside. This allows for pressure testing of the straight pipe fitting 8 to check for leaks on its inner wall. The sealing components 1 effectively improve the sealing effect at the ends of the straight pipe fitting 8, preventing wear between the elastic seals and the pipe ends. Deformation extends the service life of the elastic seal at the port, preventing a decrease in the sealing effect of the pipe fitting port and avoiding the risk of water leakage from the pipe fitting port. This ensures that the pressure test data of the straight pipe fitting 8 always has high accuracy. At the same time, the overall pressure test structure is relatively simple, reducing investment costs and subsequent maintenance costs. After the pressure test of the straight pipe fitting 8 is completed, the hydraulic pressure inside the straight pipe fitting 8 is released by a water pump. The water inside the straight pipe fitting 8 can be discharged through the set liquid guiding component 2, which facilitates centralized collection of water, prevents water from being lost at will, facilitates recycling and reuse, and saves water resources.

[0027] Further as Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, it is worth noting that the sealing assembly 1 includes placement grooves 103 fixed on the outer walls of the first inner plug 3 and the second inner plug 4. An annular rubber block 101 is fixedly fitted inside the placement grooves 103. A cavity 102 is formed inside the annular rubber block 101. Gas supply pipes 104 are provided inside both the first inner plug 3 and the second inner plug 4. One end of the gas supply pipe 104 communicates with the cavity 102, and the other end of the gas supply pipe 104 is connected to a nozzle 105. The output end of the air pump is connected to the nozzle 105, thereby inputting gas into the gas supply pipe 104 through the nozzle 105, and guiding the gas to the annular rubber block 101 through the gas supply pipe 104. The internal structure of 01 causes the annular rubber block 101 to expand rapidly, resulting in the sidewall of the expanded annular rubber block 101 pressing tightly against the inner wall of the straight pipe fitting 8, thus sealing both ends of the straight pipe fitting 8. The synchronous expansion of the two 101 blocks also causes the straight pipe fitting 8 to automatically align horizontally, effectively improving the sealing effect at the port of the straight pipe fitting 8. This prevents wear and deformation between the port elastic seal and the pipe port, extends the service life of the port elastic seal, avoids a decrease in the sealing effect at the pipe port, prevents the risk of water leakage from the pipe port, and ensures that the pressure test data of the straight pipe fitting 8 always has high accuracy.

[0028] Further as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that the liquid guiding assembly 2 includes an outlet pipe 204 fixed in the end of the infusion tank 6 away from the center of the workbench 5. The outlet pipe 204 is connected to the infusion tank 6. A sealing seat 201 is fixed on the outlet pipe 204. The inside of the sealing seat 201 is provided with a threaded groove 202 that communicates with the inside of the outlet pipe 204. A sealing bolt 203 is threadedly connected to the inside of the threaded groove 202. After the pressure test of the straight pipe fitting 8 is completed, the hydraulic pressure inside the straight pipe fitting 8 is removed by a water pump. The inside of the straight pipe fitting 8 remains sealed. The sealing bolt 203 is unscrewed from the threaded groove 202, and the outlet pipe 204 is opened. Thus, the water in the straight pipe fitting 8 can be discharged through the infusion tank 6 and the outlet pipe 204, which facilitates centralized collection of water, avoids water loss, facilitates recycling and reuse, and saves water resources.

[0029] This solution includes the following working process: By placing the straight pipe fitting 8 on the top side of the workbench 5, one end of the straight pipe fitting 8 can be fitted onto the outside of the first inner plug 3. At this time, the second inner plug 4 is located outside the straight pipe fitting 8. By manually adjusting the end of the straight pipe fitting 8 to align with the second inner plug 4, the electric push rod 7 drives the second inner plug 4 to move towards the center of the workbench 5, thereby driving the second inner plug 4 to insert into the other end of the straight pipe fitting 8, thus pre-positioning the straight pipe fitting 8. Gas is then input into the gas delivery pipe 104 through the gas nozzle 105, and the gas is guided to the interior of the annular rubber block 101 through the gas delivery pipe 104. This causes the annular rubber block 101 to expand rapidly, allowing its sidewall to press tightly against the inner wall of the straight pipe fitting 8. This seals both ends of the straight pipe fitting 8 with the two annular rubber blocks 101, and aligns the straight pipe fitting 8 horizontally. After the pressure test of the straight pipe fitting 8 is completed, the hydraulic pressure inside the straight pipe fitting 8 is removed by a water pump. The two expanded blocks 101 maintain the seal inside the straight pipe fitting 8. The sealing bolt 203 is then unscrewed from the threaded groove 202, and the outlet pipe 204 is opened. Water inside the straight pipe fitting 8 can then be discharged through the infusion tank 6 and the outlet pipe 204 for centralized collection.

[0030] Further as Figure 4 As shown, it is worth noting that a thin rubber membrane is fitted onto the surface of the screw of the sealing bolt 203; in actual operation, the thin rubber membrane improves the sealing performance of the sealing bolt 203 on the outlet pipe 204.

[0031] Further as Figure 1 and Figure 2 As shown, it is worth noting that the bottom end of the outlet pipe 204 extends into the bottom of the workbench 5, and a collection tank is set directly below the outlet pipe 204. Multiple symmetrically distributed support rods 10 are fixed on the bottom surface of the workbench 5. In actual operation, the outlet pipe 204 guides the water in the straight pipe fitting 8 to the collection tank for centralized collection and convenient recycling.

[0032] In summary: By sealing both ends of the straight pipe fitting 8 with two sets of sealing components 1, and through the synchronous expansion of the two sets of sealing components 1, the straight pipe fitting 8 automatically tilts horizontally. An external water pump is connected to the inlet pipe 9, which delivers water to the delivery tank 6, and then the water is delivered into the interior of the straight pipe fitting 8. This creates a certain amount of hydraulic pressure inside the straight pipe fitting 8, allowing for pressure testing to check for leaks on its inner wall. The sealing components 1 effectively improve the sealing effect at the ends of the straight pipe fitting 8, preventing leakage between the elastic seal and the pipe end. This reduces wear and deformation between pipe fittings, extends the service life of the elastic seals at the ports, avoids a decrease in the sealing effect of the pipe fitting ports, prevents the risk of water leakage from the pipe fitting ports, and ensures that the pressure test data of the straight pipe fitting 8 always has high accuracy. At the same time, the overall pressure test structure is relatively simple, reducing investment costs and subsequent maintenance costs. After the pressure test of the straight pipe fitting 8 is completed, the hydraulic pressure inside the straight pipe fitting 8 is released by a water pump, and the water inside the straight pipe fitting 8 can be discharged through the set liquid guiding component 2, which facilitates the centralized collection of water, prevents water from being lost at will, facilitates recycling and reuse, and saves water resources.

[0033] The electric linear actuator 7 can be purchased from the market. The electric linear actuator 7 is equipped with a power supply. It is a mature technology in this field and has been fully disclosed. Therefore, it will not be described again in the specification.

Claims

1. A pipe pressure testing apparatus comprising a workbench, characterised in that, A first inner plug and an electric push rod are fixed on the top side of the workbench. The output end of the electric push rod is oriented toward the center of the workbench, and a second inner plug is fixed to the output end of the electric push rod. The first and second inner plugs are symmetrically distributed at both ends of the workbench. Sealing components are provided on the sides of both the first and second inner plugs. An infusion tank is opened through the center of the first inner plug. An inlet pipe communicating with the infusion tank is fixed on the outer wall of the first inner plug. A liquid guiding component is provided on the end of the first inner plug away from the center of the workbench.

2. The pipe pressure testing apparatus of claim 1, wherein, The sealing assembly includes placement grooves fixed on the outer walls of the first inner plug and the second inner plug, and an annular rubber block is fitted and fixed in the placement groove, with a cavity inside the annular rubber block.

3. The pipe pressure testing apparatus of claim 2, wherein, Both the first and second inner plugs are equipped with gas delivery pipes. One end of the gas delivery pipe is connected to the cavity, and the other end of the gas delivery pipe is connected to an air nozzle.

4. The pipe pressure testing apparatus of claim 1, wherein, The fluid guiding assembly includes an outlet tube fixed in the end of the infusion tank away from the center of the workbench. The outlet tube is connected to the infusion tank. A sealing seat is fixed on the outlet tube. The sealing seat has a threaded groove inside that communicates with the inside of the outlet tube. A sealing bolt is threaded into the inside of the threaded groove.

5. The pipe pressure testing apparatus of claim 4, wherein, A thin rubber film is fitted onto the surface of the plugging bolt.

6. The pipe pressure testing apparatus of claim 5, wherein, The bottom end of the outlet tube extends into the bottom of the workbench, and a liquid collection tank is located directly below the outlet tube. Multiple symmetrically distributed support rods are fixed on the bottom surface of the workbench.

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