Hydrostatic test connector

Abstract

This utility model discloses a water pressure test connector, relating to the field of water pressure testing technology. It includes a connection mechanism comprising a threaded tube, one end of which is threaded with a clamping nut. A clamping block overlaps one side of the clamping nut, and a first rubber ring overlaps one side of the clamping block. In use, the end nut, a second washer, and a second rubber ring are placed into the pipe to be tested for water pressure. The clamping nut is then rotated clockwise, causing the rubber ring to be compressed, increasing its outer diameter and bringing it into contact with the inner wall of the pipe. The valve is then opened to fill the pipe with water. Once full, pressure is applied and maintained, while observing for water droplets at the plug. If water droplets are present, the clamping nut is rotated again. Compared to existing connection methods, this design eliminates the need for traditional bolt and welding connections. Utilizing the physical properties of rubber elastomers, a watertight test space is created within the pipe.

Description

Technical Field

[0001] This utility model relates to the field of water pressure testing technology, and specifically to a water pressure testing connector. Background Technology

[0002] Hydrostatic testing is an indispensable and crucial step in the fabrication of pressure vessels and pipelines. It serves as a means to verify whether pressure vessels and pipelines meet design requirements and pressure parameters. However, the connection between the pressure gauges and pressure boosting devices used for hydrostatic testing and the pressure vessels and pipelines under test has long been a major challenge for the industry.

[0003] Currently, during hydrostatic testing, the pressure vessel and pipe ends require special thread machining or butt welding for connection, which increases processing time and materials, thus increasing material and labor costs. Therefore, a hydrostatic testing connector is proposed. Utility Model Content

[0004] This utility model provides a water pressure test connector to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A water pressure test connector includes a connecting mechanism, the connecting mechanism including a threaded tube, one end of the surface of the threaded tube being threadedly connected to a clamping nut, a clamping block overlapping one side of the clamping nut, and a first rubber ring overlapping one side of the clamping block; a water pressure test mechanism including a tee head, the top of the tee head being threadedly connected to a water pressure gauge.

[0007] A further improvement of the present invention is that the connecting mechanism further includes a first gasket, one side of which overlaps with the end of the first rubber ring, and the other side of which overlaps with the second rubber ring.

[0008] A further improvement of the present invention is that: a second washer is attached to the end of the second rubber ring, and an end nut is attached to the side of the second washer away from the second rubber ring.

[0009] A further improvement of this utility model is that the inner wall of the end nut is threadedly connected to the end of the threaded tube, and the clamping block, the first rubber ring, the first washer, the second rubber ring, and the second washer are all sleeved on the surface of the threaded tube.

[0010] A further improvement of this utility model is that the water pressure testing mechanism also includes a valve, one end of which is threadedly connected to one end of a tee.

[0011] A further improvement of this utility model is that: the end of the valve away from the tee is provided with a quick connector for an external water supply device, and the end of the tee away from the valve is threadedly connected to the end of the threaded pipe away from the end nut.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] This utility model provides a water pressure test connector. During use, the end nut, second washer, and second rubber ring are placed into the pipe to be tested for water pressure. Then, the nut is rotated clockwise to tighten it, causing the rubber ring to be compressed, increasing its outer diameter and contacting the inner wall of the pipe. The valve is then opened to fill the pipe with water. Once full, pressure is applied and maintained, while observing for water droplets at the plug. If water droplets are present, the nut is tightened again. Compared to existing connection methods, this design eliminates the need for traditional bolts and welding. Utilizing the physical properties of rubber elastomers, it creates a watertight test space within the pipe, allowing for multiple cycles of use without open flame operations. It can be widely used for testing in-use pipelines and pressure vessels in oil, chemical, and LNG industries. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is an exploded structural diagram of the present invention;

[0016] Figure 3 This is an exploded structural diagram of the connecting mechanism of this utility model;

[0017] Figure 4 This is a side view of the present invention.

[0018] In the diagram: 11. Threaded pipe; 12. Compression nut; 13. Compression block; 14. First rubber ring; 15. First gasket; 16. Second rubber ring; 17. Second gasket; 18. End nut; 21. Tee; 22. Water pressure gauge; 23. Valve; 24. Quick coupling. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to embodiments:

[0020] Example 1

[0021] like Figure 1-4As shown, this utility model provides a water pressure test connector, including a connection mechanism, which includes a threaded tube 11, one end of which is threadedly connected to a clamping nut 12, a clamping block 13 overlapping one side of the clamping nut 12, and a first rubber ring 14 overlapping one side of the clamping block 13; and a water pressure test mechanism, which includes a tee head 21, the top of which is threadedly connected to a water pressure gauge 22.

[0022] In this embodiment, when the water pressure test connector is working, the end nut 18, the second washer 17, the second rubber ring 16, the first washer 15, the first rubber ring 14, and the clamping block 13 in the connection mechanism are first sequentially fitted onto the surface of the threaded pipe 11. The component on one side of the end nut 18 is then placed into the pipe to be tested. Next, the clamping nut 12 on the surface of the threaded pipe 11 is rotated clockwise. As it pushes into the pipe along the thread, it pushes the clamping block 13 to apply pressure to the first rubber ring 14. After being compressed, the first rubber ring 14 transmits the force to the second rubber ring 16 through the first washer 15, causing the outer diameter of the two rubber rings to increase due to elastic deformation, thus tightly fitting the inner wall of the pipe. At the same time, the second washer 17 and the end nut 18 cooperate to restrict the axial displacement of the rubber rings, forming a reliable watertight sealing structure, thus completing the sealed connection between the pipe to be tested and the connector.

[0023] Example 2

[0024] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the connecting mechanism further includes a first gasket 15, one side of the first gasket 15 overlaps with the end of the first rubber ring 14, the other side of the first gasket 15 overlaps with a second rubber ring 16, the end of the second rubber ring 16 overlaps with a second gasket 17, the side of the second gasket 17 away from the second rubber ring 16 overlaps with an end nut 18, the inner wall of the end nut 18 is threadedly connected to the end of the threaded tube 11, and the clamping block 13, the first rubber ring 14, the first gasket 15, the second rubber ring 16 and the second gasket 17 are all sleeved on the surface of the threaded tube 11.

[0025] In this embodiment, during the water pressure test stage, the quick connector 24 at one end of the valve 23 in the water pressure test mechanism is connected to the external water supply equipment, and the other end of the tee head 21 is fixed to the end of the threaded pipe 11 away from the end nut 18 by threads, forming a complete water circuit. After the valve 23 is opened, water enters the pipeline to be tested through the quick connector 24, valve 23, tee head 21 and threaded pipe 11. After the pipeline is filled with water, it is pressurized by the water supply equipment. At this time, the water pressure gauge 22 on the top of the tee head 21 displays the pressure value in the pipeline in real time. During the pressure holding process, observe whether there is water leakage at the plug where the pipeline contacts the connector. If water droplets appear, it indicates that the seal is not tight. The nut 12 needs to be rotated clockwise again to further compress the rubber ring and increase its deformation to strengthen the sealing effect.

[0026] Example 3

[0027] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the water pressure test mechanism further includes a valve 23, one end of the valve 23 is threadedly connected to one end of the tee head 21, the end of the valve 23 away from the tee head 21 is provided with a quick connector 24 for an external water supply device, and the end of the tee head 21 away from the valve 23 is threadedly connected to the end of the threaded pipe 11 away from the end nut 18.

[0028] In this embodiment, if the seal is good, the pressure is maintained for a specified time to complete the hydrostatic test. After the test, the tightening nut 12 is rotated counterclockwise, the rubber ring is elastically reset, and the outer diameter is reduced, so the connector can be removed from the pipe for reuse. The whole process replaces the traditional bolt connection or welding with the elastic deformation of the rubber ring, without the need for hot work. It can quickly form a watertight pressure test space, and is easy to disassemble and recycle, making it suitable for various testing scenarios of in-use pipelines and pressure vessels.

[0029] The working principle of this hydrostatic test connector will be explained in detail below.

[0030] like Figure 1-4As shown, when the water pressure test connector is working, firstly, the end nut 18, second washer 17, second rubber ring 16, first washer 15, first rubber ring 14, and clamping block 13 in the connection mechanism are sequentially fitted onto the surface of the threaded pipe 11. Then, the entire component on one side of the end nut 18 is placed inside the pipe to be tested. Next, the clamping nut 12 on the surface of the threaded pipe 11 is rotated clockwise. As it pushes into the pipe along the thread, it pushes the clamping block 13 to apply pressure to the first rubber ring 14. After being compressed, the first rubber ring 14 transmits the force to the second rubber ring 16 through the first washer 15, causing the outer diameter of the two rubber rings to increase due to elastic deformation, tightly fitting the inner wall of the pipe. At the same time, the second washer 17 and the end nut 18 cooperate to restrict the axial displacement of the rubber rings, forming a reliable watertight seal structure, completing the sealed connection between the pipe to be tested and the connector. During the water pressure test, the quick connector 24 at one end of the valve 23 in the water pressure test mechanism is connected to the external water supply equipment, and the other end of the tee 21 is connected to the threaded pipe 11 away from the end nut 16. One end of 8 is fixed by a thread to form a complete water circuit. After opening valve 23, water enters the pipeline to be tested through quick connector 24, valve 23, tee 21 and threaded pipe 11. After the pipeline is filled with water, it is pressurized by water supply equipment. At this time, the water pressure gauge 22 on the top of tee 21 displays the pressure value in the pipeline in real time. During the pressure holding process, observe whether there is water leakage at the plug where the pipeline contacts the connector. If water droplets appear, it means that the seal is not tight. It is necessary to rotate the tightening nut 12 clockwise again to further compress the rubber ring and increase its deformation to strengthen the sealing effect. If the seal is good, maintain the pressure for the specified time to complete the water pressure test. After the test, rotate the tightening nut 12 counterclockwise. The rubber ring elastically resets and the outer diameter shrinks. The connector can then be removed from the pipeline for reuse. The whole process replaces the traditional bolt connection or welding with the elastic deformation of the rubber ring. No hot work is required. It can quickly form a watertight pressure test space and is easy to disassemble and recycle. It is suitable for various testing scenarios of in-use pipelines and pressure vessels.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A water pressure test connector, characterized in that: include The connecting mechanism includes a threaded tube (11), one end of which is threaded with a clamping nut (12), a clamping block (13) is attached to one side of the clamping nut (12), and a first rubber ring (14) is attached to one side of the clamping block (13). A water pressure testing mechanism, the water pressure testing mechanism including a three-way connector (21), the top of which is threaded with a water pressure gauge (22).

2. The water pressure test connector according to claim 1, characterized in that: The connecting mechanism further includes a first gasket (15), one side of which overlaps with the end of the first rubber ring (14), and the other side of the first gasket (15) overlaps with a second rubber ring (16).

3. The water pressure test connector according to claim 2, characterized in that: The end of the second rubber ring (16) is overlapped with a second washer (17), and the side of the second washer (17) away from the second rubber ring (16) is overlapped with an end nut (18).

4. The water pressure test connector according to claim 3, characterized in that: The inner wall of the end nut (18) is threaded to the end of the threaded tube (11), and the clamping block (13), the first rubber ring (14), the first washer (15), the second rubber ring (16) and the second washer (17) are all sleeved on the surface of the threaded tube (11).

5. The water pressure test connector according to claim 1, characterized in that: The water pressure testing mechanism also includes a valve (23), one end of which is threadedly connected to one end of a tee head (21).

6. The hydrostatic test connector according to claim 5, characterized in that: The valve (23) is provided with a quick connector (24) for external water supply equipment at the end away from the tee head (21), and the end of the tee head (21) away from the valve (23) is threadedly connected to the end of the threaded pipe (11) away from the end nut (18).

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