Leakage testing device extending into cooling pipe of water cooler and tubular heat exchanger

Abstract

One end of a pressure measuring pipe is welded with a pipe joint connected with a pressure measuring pump and is provided with a sealing gasket, and the other end of the pressure measuring pipe is sleeved with threads and is provided with an upper sealing nut for fastening, so that the two ends of the pressure measuring pipe are ensured to be sealed without leakage; a three-way pressure gauge and a valve are mounted at the port of the piezometric tube for plugging to ensure no leakage; holes are uniformly drilled in the pipe body of the pressure measuring pipe to ensure that a pressure measuring medium can flow into the water cooler and the heat exchanger pipe for pressure testing to test leakage points. And the test environment is free of splashing and leakage, convenient and free to disassemble, stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of water cooler technology, specifically relating to a device for testing leaks that extends into the cooling tubes of a water cooler or tubular heat exchanger. Background Technology

[0002] Water coolers and tubular heat exchangers are cooling unit equipment used in motors, reducers, oil tanks, and neutral salt heat exchangers on stainless steel production lines. Long-term online operation can lead to leaks, such as leaks in the cooling pipes of water coolers for different motor models or in the cooling pipes of neutral salt heat exchangers. It is necessary to locate the leak and repair it.

[0003] In the production of water coolers and tubular heat exchangers, any malfunction or leak will directly affect motor operation and heat exchange function. In severe cases, it can burn out the motor, causing shutdowns and requiring time-consuming and labor-intensive repairs, thus delaying production. Furthermore, water coolers and tubular heat exchangers are imported equipment with long procurement cycles and high prices. If a leak occurs, inspection and repair are necessary. Because water coolers have over 100 cooling tubes arranged in multiple layers, it is difficult to pinpoint which tube is leaking. Using a pressure testing method, which involves fabricating a pressure testing plate, is often ineffective due to the large testing area and poor sealing between tubes, as this can easily lead to leaks and fail to achieve the intended leak detection purpose. Utility Model Content

[0004] This invention provides a leak detection device that extends into the cooling tubes of water coolers and tubular heat exchangers. Developed through field analysis of the structures of heat exchangers and water coolers, this device is a leak detection tool for tubular, sealed equipment such as water coolers and heat exchangers. It offers safer and more convenient operation.

[0005] Therefore, the present invention adopts the following technical solution:

[0006] A leak testing device that extends into the cooling tube of a water cooler or tubular heat exchanger includes a straight tubular pressure testing tube with a diameter smaller than the inner diameter of the cooling tube and a length greater than the cooling tube. The pressure testing tube is inserted into the cooling tube, with both ends of the pressure testing tube extending out of the cooling tube. The two ends of the cooling tube are connected to the pressure testing tube through sealing components. Water outlet holes are distributed at intervals on the pressure testing tube.

[0007] It also includes a pressure testing water pump and a pressure testing hose. One end of the pressure testing hose is connected to the outlet of the pressure testing water pump, and the other end is connected to the head end of the pressure testing tube. The tail end of the pressure testing tube is connected to a pressure gauge and a valve.

[0008] Furthermore, the sealing component includes a flat gasket and a sealing gasket, and the pressure testing tube has threads at both ends, with mounting nuts used to fix the flat gasket and the sealing gasket.

[0009] Furthermore, the outlet spacing on the pressure measuring tube is evenly distributed.

[0010] Furthermore, the pressure gauge is connected to the cooling pipe via a tee.

[0011] The beneficial effects of this utility model are as follows: by manually inserting the pressure testing tube into the cooling tube of the cooler, the annular flat gasket and the sealing gasket are inserted on both sides of the pressure testing tube to seal the two ends of the cooling tube, the nut is tightened on the thread of the pressure testing tube, and a tee, pressure gauge and valve are installed at the end of the thread. The other end is connected to the pipe joint of the test tube, and the leak detection test can be performed.

[0012] The pressure testing tube has uniform water outlet holes inside the cooling tube. When the pressure testing pump pumps fluid into the pressure testing tube, the fluid flows into the cooling tube through the water outlet holes, filling the cooling tube. Air in the cooling tube is discharged through the valve. When the valve is closed, the cooling tube is in a pressure testing and holding state. Observe the pressure gauge. If the pressure gauge pressure remains unchanged, it means that there is no leakage in the cooling tube. If the pressure gauge drops, it means that there is a leakage in the cooling tube, and the leakage point can be seen. This effectively detects micro-leakage in the cooling tube of the cooler, improving the detection accuracy of the leak detection device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] Figure 3 This is a side view of the annular flat pad;

[0016] Figure 4 This is the front view of the annular flat pad;

[0017] In the diagram: 1-pipe fitting, 2-pressure testing pipe, 3-tightening nut, 4-valve, 5-ring flat washer, 6-thread, 7-cooling pipe, 8-sealing gasket, 9-pressure testing water pump, 10-pressure testing hose, 11-water outlet, 12-pressure gauge, 13-te. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] like Figure 1 and 2 As shown, a leak testing device that extends into the cooling tube of a water cooler or tubular heat exchanger includes a straight tubular pressure testing tube 2. The diameter of the pressure testing tube 2 is smaller than the inner diameter of the cooling tube 7, and the length is larger than that of the cooling tube 7. The pressure testing tube 2 is inserted into the cooling tube 7, and both ends of the pressure testing tube 2 extend out of the cooling tube 7. The two ends of the cooling tube 7 are connected to the pressure testing tube 2 through sealing components. Water outlet holes 11 are distributed at intervals on the pressure testing tube 2.

[0020] It also includes a pressure testing water pump 9 and a pressure testing hose 10. One end of the pressure testing hose 10 is connected to the outlet of the pressure testing water pump 9, and the other end is connected to the head end of the pressure testing tube 2. The tail end of the pressure testing tube 2 is connected to a pressure gauge 12 and a valve 4.

[0021] The sealing components include a flat gasket and a sealing gasket 8. The pressure testing tube 2 has threads 6 at both ends, and mounting nuts secure the flat gasket and sealing gasket 8. The outlets on the pressure testing tube 2 are evenly spaced. The pressure gauge 12 is connected to the cooling tube 7 via a tee 13.

[0022] The installation method of this utility model is as follows:

[0023] The system includes a pressure testing tube 2 inserted into the cooling pipe 7. Flat gaskets and sealing gaskets 8 are installed at both ends of the pressure testing tube 2. Nuts 3 are tightened at the threads 6 to ensure the pressure testing tube 2 is leak-proof. The pressure testing hose 10 of the pressure testing water pump 9 is connected to the pipe connector 1. The pressure testing water pump 9 is started, and after fluid flows out from the end of the pressure testing tube 2 and air is expelled, valve 4 is closed. The pressure of the pressure testing water pump 9 slowly increases until pressure gauge 12 displays 9 MPa. The pressure testing water pump 9 is then stopped to maintain pressure. The pressure of the cooling pipe 7 is observed, as is the pressure gauge 12 of the pressure testing water pump 9. If leakage medium seeps from the cooling pipe 7, the pressure of the pressure testing water pump 9 will decrease. Conversely, if pressure gauge 12 remains unchanged and there is no fluid leakage, the pressure will be normal.

Claims

1. A device for testing leaks by inserting into the cooling tubes of a water cooler or tubular heat exchanger, characterized in that, It includes a straight tubular pressure testing tube, the diameter of which is smaller than the inner diameter of the cooling pipe and the length of which is larger than that of the cooling pipe; the pressure testing tube is inserted into the cooling pipe, and both ends of the pressure testing tube extend out of the cooling pipe, and the two ends of the cooling pipe are connected to the pressure testing tube through sealing components; water outlet holes are distributed at intervals on the pressure testing tube; It also includes a pressure testing water pump and a pressure testing hose. One end of the pressure testing hose is connected to the outlet of the pressure testing water pump, and the other end is connected to the head end of the pressure testing tube. The tail end of the pressure testing tube is connected to a pressure gauge and a valve.

2. The leak testing device for inserting into the cooling tubes of a water cooler or tubular heat exchanger according to claim 1, characterized in that, The sealing component includes a flat gasket and a sealing gasket. The pressure testing tube has threads at both ends, and the flat gasket and sealing gasket are fixed with mounting nuts.

3. The leak testing device for inserting into the cooling tubes of a water cooler or tubular heat exchanger according to claim 1, characterized in that, The outlets on the pressure measuring tube are evenly spaced.

4. The leak testing device for inserting into the cooling tubes of a water cooler or tubular heat exchanger according to claim 1, characterized in that, The pressure gauge is connected to the cooling pipe via a tee.

Images