A water pipe pressure test device
By designing a limiting structure and a quick-release structure, the problem of the inability to replace the sealing plug in existing water pipe pressure testing devices has been solved, enabling rapid adaptation to water pipes of different specifications and improving testing accuracy, thus enhancing testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-14
AI Technical Summary
The sealing plug size of existing water pipe pressure testing equipment is fixed and cannot adapt to water pipes of different diameters, resulting in frequent instrument replacements, increased procurement costs and preparation time, and reduced testing efficiency.
A water pipe pressure testing device was designed, which includes a limiting structure and a quick-release structure. The sealing plug is fixed in position by hexagonal bolts, and the quick-release structure enables the rapid replacement of the sealing plug, adapting to water pipes of different specifications.
This achieves an effective sealing fit between the sealing plug and the inner wall of the water pipe, improving the versatility and testing accuracy of the device, reducing errors caused by equipment instability, and increasing testing efficiency.
Smart Images
Figure CN224499815U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, and in particular to a water pipe pressure testing device. Background Technology
[0002] Water pipes are pipes used for supplying water and transporting liquids. The qualification standards for water pipes vary depending on the usage environment. After the production of water pipes used to transport high-pressure liquids, a section of the water pipe needs to be cut as a sample for testing the water pipe's air tightness and pressure resistance to ensure that the water pipe's values are within the qualified range.
[0003] Existing pressure testing devices, such as the water pipe pressure testing device disclosed in CN219302162U, use sealing plugs to seal both ends of the water pipe and pressurize it internally. However, the sealing plugs in the above devices are usually designed with fixed specifications and cannot be replaced. When testing water pipes of different diameters, the fixed-size sealing plugs cannot form an effective sealing fit with the inner wall of the water pipe. To solve this problem, operators need to frequently change instruments. This operation method not only increases the procurement cost and carrying difficulty of the testing device, but also prolongs the preparation time for the test operation and reduces the overall testing efficiency. Utility Model Content
[0004] The purpose of this invention is to address the problem that the sealing plugs in existing devices are usually designed with fixed dimensions and cannot be replaced. When testing water pipes of different diameters, the fixed-size sealing plugs cannot form an effective sealing fit with the inner wall of the water pipe. To solve this problem, operators need to frequently change instruments. This operation method not only increases the procurement cost and carrying difficulty of the testing device, but also prolongs the preparation time for the testing operation and reduces the overall testing efficiency. Therefore, a water pipe pressure testing device is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A water pipe pressure testing device includes a test chamber, a mounting plate fixedly connected to the test chamber by a cylinder, a T-slot on the top of the mounting plate, a moving block connected to the T-slot by a limiting structure, a fixing block fixedly connected to the top of the mounting plate, and mounting holes on opposite sides of the moving block and the fixing block, with sealing plugs connected to the mounting holes by a quick-release structure.
[0007] Preferably, the limiting structure includes a connecting block fixedly connected to the side of the moving block away from the sealing plug, a hexagonal bolt threaded to the top of the connecting block, a limiting port opened inside the connecting block, limiting blocks slidably connected to both sides of the inner wall of the limiting port, a connecting hole opened on the opposite side of the limiting block, and a spring fixedly connected to the inner wall of the connecting hole.
[0008] Preferably, the limiting block is sloped on one side, one end of the spring is fixedly connected to the inner wall of the connecting hole on the left limiting block, and the other end of the spring is fixedly connected to the inner wall of the connecting hole on the right limiting block. The hexagonal bolt moves downward and pushes the limiting block to move to both sides and abuts against the inner wall of the T-slot. The limiting block has anti-slip texture on the side near the inner wall of the T-slot.
[0009] Preferably, the quick-release structure includes a sliding groove formed at the top of the inner wall of the mounting hole, an arc-shaped groove formed at the depth of the inner wall of the mounting hole, and an elastic column slidably connected to the inner wall of the arc-shaped groove.
[0010] Preferably, the quick-release structure further includes an insert block fixedly connected to the sealing plug, the outer wall of the insert block is fixedly connected to a protrusion, the insert block is slidably engaged with the mounting hole, the protrusion is slidably engaged with the sliding groove and the arc groove respectively, and the outer wall of the protrusion is provided with a circular groove adapted to the elastic column.
[0011] Preferably, the sealing plug on the fixing block has a through hole, which allows the pressure pipe of the pressure pump to pass through.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. In use, this utility model allows for quick assembly and disassembly of the sealing plug and mounting hole via a quick-release structure, breaking the limitation of fixed-size and non-replaceable sealing plugs in traditional devices. When testing water pipes of different diameters, operators do not need to replace the entire testing instrument; they only need to replace the corresponding sealing plug according to the water pipe specifications to ensure an effective seal between the sealing plug and the inner wall of the water pipe. This significantly improves the device's adaptability to different water pipe specifications and enhances the versatility of testing operations.
[0014] 2. In use, the limiting structure in this device uses hexagonal bolts to push the limiting block to move to both sides and abut against the inner wall of the T-slot. Combined with the anti-slip texture on the limiting block, this stably fixes the moving block in the desired position, ensuring that the distance between the moving block and the fixed block precisely matches the water pipe length. This prevents sealing failure or test data deviation due to loosening of the moving block during testing. The stable limiting effect provides a reliable guarantee for the accuracy of the testing operation, reducing testing errors and rework caused by equipment instability. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a water pipe pressure testing device proposed in this utility model;
[0016] Figure 2 This is a partial cross-sectional view of a water pipe pressure testing device proposed in this utility model;
[0017] Figure 3 This is a cross-sectional view of the limiting structure of a water pipe pressure testing device proposed in this utility model;
[0018] Figure 4 This is a cross-sectional view of the quick-release structure of a water pipe pressure testing device proposed in this utility model.
[0019] In the diagram: 1. Test box; 2. Mounting plate; 3. T-slot; 4. Moving block; 5. Fixing block; 6. Mounting hole; 7. Sealing plug; 8. Connecting block; 9. Hex bolt; 10. Limiting port; 11. Limiting block; 12. Connecting hole; 13. Spring; 14. Slide groove; 15. Arc groove; 16. Elastic column; 17. Insert block; 18. Protrusion; 19. Through hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] Reference Figures 1-4 A water pipe pressure testing device includes a test chamber 1, which is the prior art used in the relevant technical field. A water pump assembly capable of pumping water is provided on its left side, and a pressure pump with a pressure gauge is provided on its right side. A cylinder is fixedly connected to its top through a connecting plate, so it will not be described in detail.
[0022] The cylinder output end is set in the horizontal direction, and the end of the cylinder output end is fixedly connected to the mounting plate 2 by welding. The mounting plate 2 is a rectangular steel plate with a thickness of 8-12mm. A T-shaped groove 3 is opened on the top of the mounting plate 2. The T-shaped groove 3 extends along the length direction of the mounting plate 2, and the two ends of the T-shaped groove 3 extend to the two end faces of the mounting plate 2 respectively.
[0023] The T-slot 3 is connected to a movable block 4 via a limiting structure. The movable block 4 is a rectangular block whose bottom fits the T-slot 3 and can slide along the length of the T-slot 3 to adjust its position according to the length of the water pipe to be tested. A fixing block 5 is welded to the top of the mounting plate 2, away from the cylinder. The fixing block 5 has the same structure as the movable block 4 and is positioned opposite to it. Mounting holes 6 are provided on opposite sides of both the movable block 4 and the fixing block 5. The mounting holes 6 are circular, with their axes horizontal, and their inner diameter matches the outer diameter of the water pipe to be tested, for inserting the end of the water pipe. A sealing plug 7 is connected to the mounting hole 6 via a quick-release structure. The sealing plug 7 is made of rubber, and its outer diameter matches the inner diameter of the mounting hole 6. The inner wall of the sealing plug 7 fits tightly against the outer wall of the water pipe to be tested to achieve a seal and prevent leakage during testing.
[0024] The limiting structure is used to fix the movable block 4 at a designated position in the T-slot 3. It includes a connecting block 8 that is fixedly connected to the side of the movable block 4 away from the sealing plug 7 by welding. The connecting block 8 is a rectangular block with a threaded hole at its top. A hexagonal bolt 9 is threaded into the threaded hole. The axis of the hexagonal bolt 9 is set in the vertical direction, and the bottom of the hexagonal bolt 9 extends into the interior of the connecting block 8.
[0025] A limiting port 10 is provided inside the connecting block 8. The limiting port 10 is a rectangular hole that penetrates both side walls of the connecting block 8 in a horizontal direction and is connected to a threaded hole. The bottom of the hexagonal bolt 9 is located inside the limiting port 10. Limiting blocks 11 are slidably connected to both sides of the inner wall of the limiting port 10 in a horizontal direction. The limiting block 11 is a rectangular block with a slider on the side closest to the inner wall of the limiting port 10. A slide rail adapted to the slider is provided on the inner wall of the limiting port 10. The slider and the slide rail slide together, allowing the limiting block 11 to move in a horizontal direction.
[0026] A connecting hole 12 is provided on the opposite side of the limiting block 11. The connecting hole 12 is a circular hole with its axis set in the horizontal direction, and the connecting holes 12 on the two limiting blocks 11 are coaxially arranged. A spring 13 is fixedly connected to the inner wall of the connecting hole 12 with glue. The spring 13 is made of stainless steel and has good elasticity and corrosion resistance.
[0027] The opposite side of the limiting block 11 is sloped with an inclination angle of 30-45° to facilitate the smooth movement of the limiting block 11 to both sides when the hexagonal bolt 9 moves downward. One end of the spring 13 is fixedly connected to the inner wall of the connecting hole 12 on the left limiting block 11, and the other end of the spring 13 is fixedly connected to the inner wall of the connecting hole 12 on the right limiting block 11. In its natural state, the spring 13 is in a stretched state, causing the opposite sides of the two limiting blocks 11 to fit tightly together.
[0028] When it is necessary to fix the movable block 4, rotate the hex bolt 9 clockwise. The hex bolt 9 moves downward along the threaded hole, and its bottom contacts the slope of the limiting block 11, pushing the limiting block 11 to both sides until the side of the limiting block 11 away from the spring 13 abuts against the inner wall of the T-slot 3. At this time, the movable block 4 is fixed in the T-slot 3 and cannot move. To prevent relative sliding between the limiting block 11 and the inner wall of the T-slot 3, the side of the limiting block 11 near the inner wall of the T-slot 3 has anti-slip texture. The anti-slip texture is horizontal stripes, which can increase the friction between the limiting block 11 and the inner wall of the T-slot 3. When it is necessary to adjust the position of the movable block 4, rotate the hex bolt 9 counterclockwise. The hex bolt 9 moves upward, and the pushing force on the limiting block 11 disappears. Under the pulling force of the spring 13, the two limiting blocks 11 move towards the middle and disengage from the inner wall of the T-slot 3. At this time, the movable block 4 can slide along the T-slot 3.
[0029] The quick-release structure is used for quick installation and removal of the sealing plug 7 to replace sealing plugs 7 of different specifications and to adapt to water pipes of different outer diameters. It includes a groove 14 opened on the top of the inner wall of the mounting hole 6. The groove 14 extends axially along the mounting hole 6, and one end of the groove 14 extends to the opening end of the mounting hole 6. The other end is connected to an arc-shaped groove 15 opened deep in the inner wall of the mounting hole 6. The arc-shaped groove 15 extends circumferentially along the mounting hole 6 and its length is 1 / 4 to 1 / 3 of the circumference of the mounting hole 6.
[0030] An elastic column 16 is fixedly connected to the inner wall of the arc groove 15 by glue. The elastic column 16 is made of rubber, and its axis is set radially along the mounting hole 6. One end of the elastic column 16 protrudes from the inner wall of the arc groove 15 and has a certain elasticity, which can shrink when subjected to external force.
[0031] The quick-release structure also includes an insert block 17, which is fixedly connected to the side of the sealing plug 7 away from the water pipe to be tested via an integral molding process. The insert block 17 is a cylindrical block whose outer diameter matches the inner diameter of the mounting hole 6, allowing it to be inserted into the mounting hole 6. The outer wall of the insert block 17 is fixedly connected with protrusions 18 via an integral molding process. The protrusions 18 are rectangular blocks, and their number is the same as the number of sliding grooves 14. The size of the protrusions 18 matches the size of the sliding grooves 14 and the arc-shaped grooves 15. The insert block 17 slides in fit with the mounting hole 6, and the protrusions 18 slide in fit with the sliding grooves 14 and the arc-shaped grooves 15, respectively.
[0032] The outer wall of the protrusion 18 has a circular groove that matches the elastic post 16. When the protrusion 18 slides into the arc-shaped groove 15 along the sliding groove 14 and slides to the designated position along the arc-shaped groove 15, the elastic post 16 is engaged in the circular groove under its own elasticity, fixing the protrusion 18 in the arc-shaped groove 15, thereby achieving a fixed connection between the sealing plug 7 and the mounting hole 6. When it is necessary to remove the sealing plug 7, pull the sealing plug 7 outwards from the mounting hole 6, so that the protrusion 18 exerts pressure on the elastic post 16, causing the elastic post 16 to contract and disengage from the circular groove. Then, rotate the sealing plug 7, so that the protrusion 18 slides along the arc-shaped groove 15 to the sliding groove 14. Finally, pull the insert 17 out of the mounting hole 6 along the sliding groove 14 to complete the removal of the sealing plug 7.
[0033] The sealing plug 7 on the fixed block 5 has a through hole 19. The through hole 19 extends along the axis of the sealing plug 7 through both sides of the sealing plug 7, and the inner diameter of the through hole 19 is adapted to the outer diameter of the pressure tube of the pressure pump. The through hole 19 allows the pressure tube of the pressure pump to pass through, so that the pressure pump can inject high-pressure water into the water pipe to be tested for pressure testing. During the test, one end of the water pipe to be tested is inserted into the sealing plug 7 on the moving block 4, and the other end is inserted into the sealing plug 7 on the fixed block 5. The position of the moving block 4 is fixed by the limiting structure, so that the water pipe to be tested is clamped. Then, the pressure tube of the pressure pump is passed through the through hole 19 and inserted into the water pipe to be tested. The pressure pump is started to inject high-pressure water into the water pipe to be tested. The water pipe to be tested is observed for any leakage to determine the sealing performance and pressure resistance of the water pipe.
[0034] Working principle:
[0035] When using this device, first adjust the position of the moving block 4 according to the length of the water pipe 1 to be tested. Loosen the hexagonal bolt 9 on the moving block 4 counterclockwise. At this time, the limiting block 11 is disengaged from the inner wall of the T-groove 3 under the tension of the spring 13, and the moving block 4 can slide along the T-groove 3 to a suitable distance. Insert both ends of the water pipe into the mounting holes 6 of the sealing plug 7 on the moving block 4 and the fixed block 5 respectively, and then tighten the hexagonal bolt 9 clockwise. The lower end of the bolt pushes the limiting blocks 11 with slopes on both sides to move outward, so that they are tightly pressed against the inner wall of the T-groove 3. The moving block 4 is firmly locked by friction, thereby clamping the water pipe.
[0036] After clamping, insert the pressure pump tube through the through hole 19 of the sealing plug 7 on the fixing block 5 into the end of the water pipe. Start the water pump assembly to supply water to the test chamber 1, and simultaneously operate the pressure pump to inject high-pressure water into the water pipe. Observe the pressure gauge reading and the surface of the water pipe to check for leaks or abnormal pressure drops, in order to evaluate the sealing and pressure resistance performance of the water pipe. After the test, first release the pressure inside the pipe, then loosen the hexagonal bolt 9 in the reverse direction to release the moving block 4, and the tested water pipe can be removed. The sealing plug 7 can be replaced through its quick-release structure (including the sliding groove 14, arc groove 15, elastic column 16, insert block 17, and protrusion 18) to accommodate different pipe diameters.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A water pipe pressure testing device, comprising a test chamber (1), characterized in that, The test box (1) is fixedly connected to the mounting plate (2) by a cylinder. The top of the mounting plate (2) is provided with a T-slot (3). The T-slot (3) is connected to a moving block (4) by a limiting structure. The top of the mounting plate (2) is fixedly connected with a fixing block (5). The moving block (4) and the fixing block (5) are both provided with mounting holes (6) on opposite sides. The mounting holes (6) are connected to sealing plugs (7) by a quick-release structure.
2. The water pipe pressure testing device according to claim 1, characterized in that, The limiting structure includes a connecting block (8) fixedly connected to the side of the moving block (4) away from the sealing plug (7). The top of the connecting block (8) is threaded with a hexagonal bolt (9). A limiting port (10) is opened inside the connecting block (8). Limiting blocks (11) are slidably connected to both sides of the inner wall of the limiting port (10). A connecting hole (12) is opened on the opposite side of the limiting block (11). A spring (13) is fixedly connected to the inner wall of the connecting hole (12).
3. The water pipe pressure testing device according to claim 2, characterized in that, The limiting block (11) is set on a slope on the opposite side. One end of the spring (13) is fixedly connected to the inner wall of the connecting hole (12) on the left limiting block (11), and the other end of the spring (13) is fixedly connected to the inner wall of the connecting hole (12) on the right limiting block (11). The hexagonal bolt (9) moves downward and pushes the limiting block (11) to move to both sides and abut against the inner wall of the T-slot (3). The limiting block (11) has anti-slip texture on the side near the inner wall of the T-slot (3).
4. The water pipe pressure testing device according to claim 1, characterized in that, The quick-release structure includes a sliding groove (14) on the top of the inner wall of the mounting hole (6), an arc-shaped groove (15) is provided on the inner wall of the deep part of the mounting hole (6), and an elastic column (16) is slidably connected to the inner wall of the arc-shaped groove (15).
5. A water pipe pressure testing device according to claim 4, characterized in that, The quick-release structure also includes a plug (17) fixedly connected to the sealing plug (7). The outer wall of the plug (17) is fixedly connected to a protrusion (18). The plug (17) is slidably engaged with the mounting hole (6). The protrusion (18) is slidably engaged with the sliding groove (14) and the arc groove (15) respectively. A circular groove adapted to the elastic column (16) is opened on the outer wall of the protrusion (18).
6. The water pipe pressure testing device according to claim 1, characterized in that, The sealing plug (7) on the fixed block (5) has a through hole (19) through which the pressure pipe of the pressure pump can pass.