Pipeline water pressure sealing performance testing device

Abstract

The utility model provides a pipeline water pressure sealing performance testing device, which relates to the field of pipeline sealing testing and comprises a device cart, a fixing assembly and a bearing plate are arranged on the upper side of the device cart, a sealing plate is arranged between the fixing assembly and the bearing plate, one side of the sealing plate is connected with an extrusion block, and the other side of the sealing plate is connected with a pressure sensor. An outer ring body and an inner ring body are arranged on the side, away from the extrusion block, of the sealing plate, an air bag ring is arranged between the outer ring body and the inner ring body, a first air pump is arranged in the extrusion block, a second air pump is arranged on the upper side of the extrusion block and connected with the air bag ring, and meanwhile a hydraulic cylinder is connected to the outer side of the extrusion block. The pipeline sealing device is flexible to move and use, and the sealing effect and the sealing stability of a pipeline opening are improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing test technology, specifically to a pipeline water pressure sealing test device. Background Technology

[0002] Pipelines used for media flow need to undergo a water pressure sealing test before use to prevent media leakage during operation.

[0003] A search revealed existing technology (publication number: CN221374452U), which describes "a sealing pressure testing device for water pressure testing, including a base, a placement block at the middle position of the top of the base, a support plate at one end of the back of the top of the base, an air pump at the middle position of the top of the support plate, a rubber hose at the output end of the air pump, a pressure gauge on the outside of one set of rubber hoses, a connecting assembly at the other end of the two sets of rubber hoses, and a second connecting pipe sleeved on one side of the connecting assembly. This utility model device, by incorporating a clamping assembly inside the sealing piston, simultaneously drives the first internal threaded sleeve through transmission when the sealing piston seals the pipe. This causes four sets of arc-shaped clamping plates to be lifted upwards by the hinged rod, allowing the arc-shaped clamping plates to apply greater pressure to compress the sealing piston, ensuring tight contact between the outside of the sealing piston and the inside of the pipe, further improving the sealing performance of the sealing piston."

[0004] While existing water pressure testing sealing devices have achieved sealing tests for pipes of different diameters, they still have some shortcomings: Firstly, the sealing piston and the arc-shaped clamping plate in existing water pressure testing sealing devices are not in full contact; there is a gap between the arc-shaped clamping plates in the circumferential direction of the sealing piston. This results in the piston portion at the gap failing to seal after the piston is internally opened, leading to an unsatisfactory sealing effect. Secondly, the cover is only fixed to the pipe end via a hinged rod and the internal support of the arc-shaped clamping plate. This can cause the pressure generated inside the pipe during pressure testing to exceed the friction between the arc-shaped clamping plate and the pipe wall, resulting in piston loosening. Additionally, the base and placement block are not easily movable, leading to a lack of testing flexibility. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a pipeline water pressure sealing test device is provided to solve the problems mentioned in the background.

[0006] To achieve the above objectives, a pipeline water pressure sealing test device is provided, comprising: a device trolley, a fixing component and a support plate on the upper side of the device trolley, a sealing plate between the fixing component and the support plate, and a squeezing block connected to one side of the sealing plate; an outer ring and an inner ring on the side of the sealing plate away from the squeezing block, and an air bladder ring between the outer ring and the inner ring; a first air pump inside the squeezing block, and a second air pump on the upper side of the squeezing block, the second air pump being connected to the air bladder ring; and a hydraulic cylinder connected to the outer side of the squeezing block.

[0007] Furthermore, the device trolley includes a base and a side plate connected to the upper end of the base, and rollers are installed on the lower side of the base.

[0008] Furthermore, the fixing component includes a positioning post that rotates through the base of the device trolley, and a drive box is connected to the upper end of the positioning post. One side of the drive box is slidably connected to the side plate of the device trolley via a guide block.

[0009] Furthermore, the fixing assembly also includes a swivel screw rotatably connected to the top of the drive box, and a screw plate is screwed onto the outer side of the swivel screw.

[0010] Furthermore, the outlet end of the first air pump is connected to a pressurizing air pipe, and the pressurizing air pipe passes horizontally through the center of the sealing plate.

[0011] Furthermore, the outlet of the second air pump is connected to an air inlet pipe, which is inserted into the inner cavity opened inside the sealing plate. A tube is connected to one side of the inner cavity, and the outlet of the tube is inserted into the airbag ring.

[0012] Furthermore, the lower end of the sealing plate is connected to a connecting rod, and the lower end of the connecting rod is connected to a slider, which is slidably connected to the upper side of the base of the device trolley.

[0013] Furthermore, the support plate is designed as an arc-shaped plate structure, and a telescopic rod and an electric push rod are connected to the lower end of the support plate. Both the telescopic rod and the electric push rod are installed on the base of the device trolley.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The device trolley and fixing components make it easy to move the entire device to both sides of the pipe to be tested. Then, the screw included in the fixing components can be manually driven to rotate, thereby moving the drive box downward along the side plate of the device trolley. At the same time, the motor inside the drive box is started, which drives the positioning stake to rotate, thereby inserting the positioning stake downward into the ground and fixing the device trolley. Then, the pipe opening of the test pipe is sealed, thereby improving the mobility of the device.

[0016] 2. By using a sealing plate and a hydraulic cylinder, the sealing plate is kept under a certain pressure and sealed over the pipe opening under the drive of the hydraulic cylinder, thereby enhancing the effect of resisting the internal air pressure of the pipe during the test. At the same time, the second air pump, air inlet pipe, inner cavity and insertion tube are used to facilitate the inflation of the airbag rings, so that the two airbag rings are inflated and expanded to achieve compression and sealing of the inner and outer walls of the pipe opening, thereby achieving an auxiliary sealing effect and improving the sealing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model embodiment.

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0019] Figure 3 This is a side view structural diagram of an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the fixing component structure according to an embodiment of the present utility model.

[0021] Figure 5 This is a practical embodiment Figure 1 Schematic diagram of the structure at point A in the middle.

[0022] Figure 6 This is a schematic diagram of one side of the sealing plate in this embodiment.

[0023] In the diagram: 1. Device trolley; 2. Fixing assembly; 21. Screw handle; 22. Threaded plate; 23. Drive box; 24. Guide block; 25. Positioning stake; 3. Extrusion block; 31. First air pump; 32. Pressurizing air pipe; 4. Sealing plate; 41. Inner cavity; 42. Insertion tube; 43. Outer ring; 44. Airbag ring; 45. Inner ring; 46. Connecting rod; 47. Slider; 5. Hydraulic cylinder; 6. Second air pump; 61. Air inlet pipe; 7. Support plate; 71. Telescopic rod; 72. Electric actuator. Detailed Implementation

[0024] Reference Figures 1 to 6As shown, this utility model provides a pipeline water pressure sealing test device, including: a device trolley 1, the device trolley 1 includes a base and a side plate connected to the upper end of the base, and rollers are installed on the lower side of the base. The upper side of the device trolley 1 is provided with a fixing component 2 and a support plate 7, and a sealing plate 4 is provided between the fixing component 2 and the support plate 7. A squeezing block 3 is connected to one side of the sealing plate 4. The support plate 7 is designed as an arc plate structure, and a telescopic rod 71 and an electric push rod 72 are connected to the lower end of the support plate 7. The telescopic rod 71 and the electric push rod 72 are both installed on the base of the device trolley 1. The side of the sealing plate 4 away from the squeezing block 3 is provided with an outer ring 43 and an inner ring 45, and an airbag ring 44 is provided between the outer ring 43 and the inner ring 45. The squeezing block 3 is provided with a first air pump 31 inside, and a second air pump 6 is provided on the upper side of the squeezing block 3. The second air pump 6 is connected to the airbag ring 44. At the same time, a hydraulic cylinder 5 is connected to the outer side of the squeezing block 3.

[0025] In this embodiment, there are two device carts 1, and the two device carts 1 are respectively connected to the two ends of the test pipe.

[0026] Specifically, the inner wall of the side plate is provided with a guide groove, and the upper side of the base is provided with a sliding groove.

[0027] Specifically, after the test pipe is lifted onto the support plate 7, the height of the pipe is adjusted by the electric actuator 72 so that the center of the pipe end coincides with the center of the sealing plate 4 as much as possible, that is, a slight error is allowed.

[0028] Specifically, an air inlet is provided on the outer side of the extrusion block 3, and the air inlet is connected to the installation space of the first air pump 31 on the inner side of the extrusion block 3, so as to facilitate the air intake of the first air pump 31.

[0029] like Figure 2 and Figure 4 In the middle, the fixing component 2 includes a positioning post 25 that rotates through the base of the device trolley 1, and the upper end of the positioning post 25 is connected to the drive box 23. One side of the drive box 23 is slidably connected to the side plate of the device trolley 1 through the guide block 24. The fixing component 2 also includes a swivel screw 21 that is rotatably connected to the top of the drive box 23, and a screw plate 22 is screwed to the outer side of the swivel screw 21. The air outlet of the first air pump 31 is connected to a pressurizing air pipe 32, and the pressurizing air pipe 32 passes horizontally through the center of the sealing plate 4.

[0030] Specifically, the guide block 24 is slidably connected in the guide groove, the drive box 23 is equipped with a drive motor, and the output shaft end of the drive motor is connected to the upper end of the positioning pile 25.

[0031] Specifically, the outer wall of the pressurizing air tube 32 is connected to a branch tube, which extends through the extrusion block 3 to the outside, and the outer end of the branch tube is connected to a pressure gauge to observe and test the air pressure.

[0032] like Figure 2 , Figure 5 and Figure 6 In the middle, the air outlet of the second air pump 6 is connected to the air inlet pipe 61, and the air inlet pipe 61 is inserted into the inner cavity 41 opened inside the sealing plate 4. The inner cavity 41 is connected to the insertion tube 42 on one side, and the air outlet of the insertion tube 42 is inserted into the airbag ring 44. The lower end of the sealing plate 4 is connected to the connecting rod 46, and the lower end of the connecting rod 46 is connected to the slider 47. The slider 47 is slidably connected to the upper side of the base of the device trolley 1.

[0033] Specifically, the outer wall of the air intake pipe 61 is connected to a vent valve to facilitate the release of air from the airbag ring 44, and the airbag ring 44 is fixed to the side surface of the sealing plate 4 facing the pipe opening.

[0034] It should be noted that during the test, the air pressure inside the pipe acts on the two ends of the pipe, thereby creating a certain outward squeezing force on the outside of the airbag. Combined with the squeezing force applied inward by the sealing plate 4 to the airbag ring 44, and the ring structure, the airbag ring 44 achieves stable expansion.

[0035] Specifically, the slider 47 is slidably connected in the groove, so that the connecting rod 46 can achieve linear and stable movement of the sealing plate 4.

[0036] In use, first move the device trolley to both ends of the pipe to be tested, then lift both ends of the pipe onto the support plate one after the other, and then adjust it to a suitable height using the electric actuator (with the air pressure tube in the center of the pipe). At this time, start the hydraulic cylinder to drive the sealing plate close to the pipe opening, so that the pipe wall is placed between the two air bladder rings. After the sealing plate and the pipe opening are in pressure contact, start the second air pump to inflate the air bladder. At this time, the air bladder clamps the inner and outer pipe walls to form a seal. Then start the first air pump to inflate the inside of the pipe through the air pressure tube, and observe the pressure gauge during the process.

[0037] The pipeline water pressure sealing test device of this utility model can effectively solve the problems mentioned in the background technology. It has the flexibility of mobile use and improves the sealing effect and the stability of the pipeline opening seal, based on the existing pipeline water pressure sealing test device technology.

Claims

1. A pipe water pressure sealing test device, comprising: The device trolley (1) is characterized in that: a fixing component (2) and a support plate (7) are provided on the upper side of the device trolley (1), and a sealing plate (4) is provided between the fixing component (2) and the support plate (7), and a pressing block (3) is connected to one side of the sealing plate (4). An outer ring body (43) and an inner ring body (45) are provided on the side of the sealing plate (4) away from the pressing block (3), and an airbag ring (44) is provided between the outer ring body (43) and the inner ring body (45). A first air pump (31) is provided inside the pressing block (3), and a second air pump (6) is provided on the upper side of the pressing block (3), and the second air pump (6) is connected to the airbag ring (44). At the same time, a hydraulic cylinder (5) is connected to the outer side of the pressing block (3).

2. The pipeline water pressure sealing test device according to claim 1, characterized in that, The device trolley (1) includes a base and a side plate connected to the upper end of the base, and rollers are installed on the lower side of the base.

3. The pipeline water pressure sealing test device according to claim 1, characterized in that, The fixing component (2) includes a positioning stake (25) for the base of the rotating through device trolley (1), and a drive box (23) is connected to the upper end of the positioning stake (25), and one side of the drive box (23) is slidably connected to the side plate of the device trolley (1) through a guide block (24).

4. The pipeline water pressure sealing test device according to claim 1, characterized in that, The fixing component (2) also includes a swivel screw (21) rotatably connected to the top of the drive box (23), and a screw plate (22) is screwed to the outside of the swivel screw (21).

5. The pipeline water pressure sealing test device according to claim 1, characterized in that, The first air pump (31) has a pressurizing pipe (32) connected to its outlet end, and the pressurizing pipe (32) passes horizontally through the center of the sealing plate (4).

6. The pipeline water pressure sealing test device according to claim 1, characterized in that, The second air pump (6) has an air inlet pipe (61) connected to its outlet end, and the air inlet pipe (61) is inserted into the inner cavity (41) opened inside the sealing plate (4), and an insertion tube (42) is connected to one side of the inner cavity (41), while the air outlet of the insertion tube (42) is inserted into the airbag ring (44).

7. The pipeline water pressure sealing test device according to claim 1, characterized in that, The lower end of the sealing plate (4) is connected to a connecting rod (46), and the lower end of the connecting rod (46) is connected to a slider (47), and the slider (47) is slidably connected to the upper side of the base of the device trolley (1).

8. The pipeline water pressure sealing test device according to claim 1, characterized in that, The support plate (7) is designed as an arc-shaped plate structure, and the lower end of the support plate (7) is connected to a telescopic rod (71) and an electric push rod (72), and both the telescopic rod (71) and the electric push rod (72) are installed on the base of the device trolley (1).

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