Sealing device for single-tube leakage test

Abstract

The utility model provides a sealing device for single pipe leakage test, which comprises a connecting piece used for being connected with a to-be-tested pipeline, one end of the to-be-tested pipeline can extend into the connecting piece and is fixedly connected with the connecting piece, the other end of the connecting piece is connected with a pressing connector, and a sealing ring is arranged in the pressing connector. One end of the sealing ring can be tightly attached to the pipeline to be detected when the pressing connector is in a screwed state, so that sealing is achieved, and the other end of the pressing connector is connected with a pressure detection assembly; the sealing device is reasonable in design structure and convenient to use, can replace a welding mode in the prior art to connect a single pipe opening with a water meter pipeline, can be quickly connected to the single pipe opening in a detachable mode, reduces the complexity of the leakage testing process, and improves the leakage testing efficiency. And the device has the advantages of being safe and convenient to use, quick and accurate to operate, labor-saving, easy to operate, capable of greatly improving the working efficiency, reducing the labor intensity, saving time and reducing the cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline leak testing in a heat exchanger, and in particular relates to a sealing device for single-tube leak testing. Background Art

[0002] At present, the method of single-pipe leak test is to weld the pipe with water meter to the pipe head of the single pipe, connect the water pipe and valve, and then test the leak under pressure. Due to the different skills of welding workers, there may be leakage in the weld during the leak test. After the leak test is completed, the welds between the pipe head and the water inlet and outlet pipes are cut with a cutting machine. The flatness of each cut pipe end face is different.

[0003] The various installation methods of existing single-tube leak detection cannot meet the needs of large-scale pipeline leak detection, have a certain impact on the flatness of the pipeline end surface, and have the disadvantages of low work efficiency and high labor intensity. In view of the above reasons, a sealing device for single-tube leak detection is now proposed. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a sealing device for single-tube leak testing, which has a simple design structure, is safe and convenient to use, is quick and accurate to operate, saves effort, is easy to operate, greatly improves work efficiency, reduces labor intensity, saves time and reduces costs.

[0005] The technical solution adopted by the utility model is: a sealing device for single-tube leak testing, including a connector for connecting to the pipeline to be tested, one end of the pipeline to be tested can extend into the interior of the connector and be fixedly connected to the connector, the other end of the connector is connected to a compression joint, a sealing ring is installed in the compression joint, and the compression joint can make one end of the sealing ring close to the pipeline to be tested to achieve sealing when it is tightened, and a pressure detection component is connected to the other end of the compression joint.

[0006] The connecting piece includes a sealing clamp and a sealing buckle, which are connected to the sealing clamp by bolts. One end of the pipeline to be tested can extend between the sealing clamp and the sealing ring, and a stable connection between the sealing clamp, the sealing buckle and the pipeline to be tested is achieved when the bolts are tightened.

[0007] The outside of the compression joint is provided with an external thread, one end of the sealing clamp is provided with an internal thread, and the compression joint and the sealing clamp are connected through threads.

[0008] The compression joint is provided with a step in contact with the sealing ring. When the compression joint and the sealing clamp are in a relatively tightened state, one end of the sealing ring abuts against the step, and the other end abuts against the end of the pipeline to be tested.

[0009] The beneficial effects of the utility model are:

[0010] The utility model has a reasonable design structure and is easy to use. It can replace the welding method used in the prior art to connect the single pipe mouth and the water meter pipe. The sealing device can be quickly connected to the single pipe mouth in a detachable manner, which reduces the complexity of the leak testing process. It is safe and convenient to use, quick and accurate to operate, labor-saving, easy to operate, greatly improves work efficiency, reduces labor intensity, saves time and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a diagram of the use state of the utility model;

[0012] Figure 2 It is an exploded view of the utility model;

[0013] Figure 3 It is a cross-sectional view of the utility model;

[0014] Figure 4 It is a cross-sectional view of the utility model when in use.

[0015] Markings in the figure: 1. Water inlet pipe; 2. Pressure detection component; 3. Sealing device; 301. Sealing clamp; 302. Sealing buckle; 303. Compression joint; 304. Sealing ring; 4. Pipeline to be tested; 5. Valve. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1-4 As shown, a sealing device for single-tube leak testing includes a connector for connecting to a pipe 4 to be tested, one end of the pipe 4 to be tested can extend into the interior of the connector and be fixedly connected to the connector, wherein the connector includes a sealing clamp 301 and a sealing buckle 302, the sealing buckle 302 is connected to the sealing clamp 301 by bolts, the sealing buckle 302 is a semicircular structure as a whole, and is installed on the sealing clamp 301 in a detachable bolt connection along the radial direction, one end of the pipe 4 to be tested can extend between the sealing clamp 301 and the sealing ring 304, and realize a firm connection between the sealing clamp 301, the sealing buckle 302 and the pipe 4 to be tested when the bolts are tightened, and is mainly used to lock and fix the pipe 4 to be tested.

[0018] The other end of the connector is connected to a compression joint 303. Specifically, the outside of the compression joint 303 has an external thread, one end of the sealing clamp 301 is provided with an internal thread, the compression joint 303 and the sealing clamp 301 are connected by threads, a sealing ring 304 is installed in the compression joint 303, and the compression joint 303 can make one end of the sealing ring 304 close to the pipe to be tested 4 in a tightened state to achieve sealing, wherein a step in contact with the sealing ring 304 is provided inside the compression joint 303, and when the compression joint 303 and the sealing clamp 301 are in a relatively tightened state, one end of the sealing ring 304 abuts against the step, and the other end abuts against the end of the pipe to be tested 4.

[0019] A pressure detection assembly 2 is connected to the other end of the compression joint 303, wherein the pressure detection assembly 2 includes a pipeline that can be connected to the compression joint 303 and a pressure detection gauge installed on the pipeline, so as to realize pressure monitoring in the pipeline during leak testing.

[0020] When this sealing device for single-tube leak testing is used, Figure 1 and 4 As shown, when preparing for leak testing, the sealing clamps 301 and sealing buckles 302 of the two sets of single-tube leak testing sealing devices 3 are connected by bolts and clamped on the water inlet and water outlet of the pipe 4 to be tested. After placing the sealing ring 304 in the compression joint 303, the compression joint 303 is connected to the sealing clamp 301 by threading, and the sealing ring 304 is pressed against the end face of the pipe 4 to be tested by tightening the thread. The pressure detection component 2 is connected to the compression joint 303 by threading, and the pressure detection component 2 at the water inlet end is connected to the water inlet pipe 1, and the pressure detection component 2 at the water outlet end is connected to the valve 5. Start the water pump to pump tap water into the pipe 4 to be tested, and close the valve 5 after the water flows out from the water outlet. When the pressure reaches the leak test requirement, turn off the water pump and maintain the pressure for a period of time, and observe the water inlet and outlet pressure gauges to determine whether the pipe is leaking.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing device for single-tube leak testing, characterized in that: It includes a connector for connecting to the pipe to be tested, one end of the pipe to be tested can extend into the connector and be fixedly connected to the connector, the other end of the connector is connected to a compression joint, a sealing ring is installed in the compression joint, and the compression joint can make one end of the sealing ring close to the pipe to be tested to achieve sealing when the compression joint is tightened, and a pressure detection component is connected to the other end of the compression joint.

2. A sealing device for single-tube leak testing according to claim 1, characterized in that: The connecting piece includes a sealing clamp and a sealing buckle, which are connected to the sealing clamp by bolts. One end of the pipeline to be tested can extend between the sealing clamp and the sealing ring, and a stable connection between the sealing clamp, the sealing buckle and the pipeline to be tested is achieved when the bolts are tightened.

3. A sealing device for single-tube leak testing according to claim 1, characterized in that: The outside of the compression joint is provided with external threads, one end of the sealing clamp is provided with internal threads, and the compression joint and the sealing clamp are connected through threads.

4. A sealing device for single-tube leak testing according to claim 3, characterized in that: A step in contact with the sealing ring is provided inside the compression joint. When the compression joint and the sealing clamp are in a relatively tightened state, one end of the sealing ring abuts against the step, and the other end abuts against the end of the pipe to be tested.

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