Rapid pressure leakage testing device for tubular cooler

Abstract

The utility model discloses a tube type cooler rapid pressure leakage test device, which comprises a pressure device and a pressure building device, the pressure device comprises an air source hose, a test pressure gauge, a manual air valve, a tubular handle and an elastic plug, the air inlet end of the air source hose is connected with a high-pressure air source, and the pressure building device is connected with the pressure building device. One end of the tubular handle is connected with the air outlet end of the air source hose, the rear end of the elastic plug is connected with the tubular handle, the front end face of the elastic plug is a sealing conical face attached to the end face of one end of a tested heat transfer tube, and an inner cavity of the tubular handle is communicated with an inner cavity of the tested heat transfer tube through a center hole of the elastic plug. The test pressure gauge and the manual air valve are installed on the tubular handle, and the pressure building device blocks the other end of the heat transfer tube to be tested. According to the utility model, the pressing device and the pressure building device are sealed with the heat transfer pipe to be tested through the elastic parts, and pipe fittings do not need to be disassembled and assembled in the pressing leakage test process, so that the pressing leakage test efficiency is greatly improved, the shutdown maintenance time is reduced, and the normal production is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of quick pressurizing and leak testing devices of tube-in-tube cooler, can quickly find out the tube bundle of leakage point, improve repair efficiency, belong to workshop tool technical field. BACKGROUND

[0002] Tube-in-tube cooler is widely used in the oil lubrication system and hydraulic system of metallurgy, mine, cement, electric power, light industry, food, chemical industry, papermaking etc., to cool the liquid medium such as lubricating oil and hydraulic oil in the system. Tube-in-tube cooler, also known as shell-and-tube cooler, is mainly composed of a shell and a heat transfer tube bundle arranged inside the shell. The liquid flowing in the heat transfer tube is the tube side, and the liquid flowing between the heat transfer tube and the shell is the shell side. The wall of the heat transfer tube is the heat transfer surface. The heat transfer tube is usually made of red copper pipe. Some heat transfer tubes have fins on the outer wall to increase the heat exchange area and reduce the volume and weight of the product.

[0003] After long-term continuous operation, tube-in-tube cooler is prone to internal leakage (heat transfer tube leakage). When internal leakage occurs, the cooler must be shut down for maintenance. The traditional maintenance method is to plug one end of each heat transfer tube with a plug, connect the other end to a high-pressure gas source through a pipe fitting, and then observe the leakage of the heat transfer tube wall or test the pressure in the heat transfer tube to determine whether there is a leakage. After finding the leaking heat transfer tube, maintenance or replacement is performed. The disadvantage is that the pipe fitting needs to be repeatedly disassembled and assembled, which is complicated and inefficient, and the equipment downtime is long, which seriously affects the normal production. Therefore, it is necessary to design a device that can quickly detect heat transfer tube leakage faults. SUMMARY

[0004] The utility model aims at the drawbacks of the prior art, provides a kind of tube-in-tube cooler quick pressurizing and leak testing device, to efficiently detect and handle heat transfer tube leakage fault, reduce downtime maintenance time, ensure the normal production.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A kind of tube-in-tube cooler quick pressurizing and leak testing device, including pressurizing device and pressure retaining device, the pressurizing device includes gas source hose, test pressure gauge, hand valve, pipe handle and elastic plug, the gas inlet end of the gas source hose is connected with high-pressure gas source, one end of the pipe handle is connected with the gas outlet end of the gas source hose, the other end is installed with the elastic plug with central hole, the rear end of the elastic plug is connected with the pipe handle, the front end face is the sealing cone surface that is in line with the end face of the one end of the heat transfer tube to be measured, the inner cavity of the pipe handle is communicated with the inner cavity of the heat transfer tube to be measured by the central hole of the elastic plug, the test pressure gauge and hand valve are installed on the pipe handle, the pressure retaining device blocks the other end of the heat transfer tube to be measured.

[0007] The rapid pressure test and leakage device for the tube type cooler, the pressure blocking device comprises a pressure blocking rod and a handle, one end of the pressure blocking rod is fixedly connected with the handle, and the other end of the pressure blocking rod is provided with an elastic sealing circular table corresponding to the other end of the measured heat transfer pipe.

[0008] The rapid pressure test and leakage device for the tube type cooler, the gas inlet end of the gas source hose is connected with the high-pressure gas source through the high-pressure gas pipe, and the high-pressure gas pipe is provided with an inlet pressure gauge and a pressure reducing valve.

[0009] The rapid pressure test and leakage device for the tube type cooler, the material of the elastic plug and the elastic sealing circular table is rubber, and the material of the high-pressure gas pipe and the pipe handle is stainless steel.

[0010] The utility model discloses a pressure device is given the measured heat transfer pipe delivery high pressure gas, and the other end of the measured heat transfer pipe is blocked to the pressure device and pressure blocking device with the measured heat transfer pipe between all through the elastic component seal, and the pressure test and leakage process do not need to dismount the pipe fitting, greatly improve the pressure test and leakage efficiency, reduce the downtime maintenance time, guarantee the normal production. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model discloses make further detailed explanation in combination with the specific embodiment and the drawing.

[0012] Fig. 1 It is the structure schematic drawing of the pressure device in the utility model;

[0013] Fig. 2 It is the structure schematic drawing of the pressure blocking device in the utility model;

[0014] Fig. 3 It is the schematic drawing of detecting heat transfer pipe leakage failure using the utility model.

[0015] The numbers in the drawing are as follows: 1, high-pressure gas pipe, 2, inlet pressure gauge, 3, pressure reducing valve, 4, gas source hose, 5, test pressure gauge, 6, hand valve, 7, pipe handle, 8, elastic plug, 9, elastic sealing circular table, 10, pressure blocking rod, 11, handle, 12, measured heat transfer pipe. PREFERRED EMBODIMENT

[0016] The utility model provides a kind of rapid pressure test and leakage device for tube type cooler for the drawbacks of prior art, which can quickly find the heat transfer pipe of leakage, save repair time and workload, reduce the economic loss caused by downtime.

[0017] Referring to Figs. 1-3The utility model mainly includes punch and hold pressure device, wherein, punch includes high pressure gas pipe 1, inlet pressure gauge 2, pressure reducing valve 3, gas source hose 4, test pressure gauge 5, manual air valve 6, tubular handle 7 and elastic plug 8, hold pressure device includes hold pressure rod 10 and handle 11.

[0018] One end of high pressure gas pipe 1 is connected with high pressure gas source, the other end is connected with the gas inlet end of gas source hose 4, inlet pressure gauge 2 and pressure reducing valve 3 are installed on high pressure gas pipe 1, one end of tubular handle 7 is connected with the gas outlet end of gas source hose 4, the other end is installed with elastic plug 8 with central hole, the rear end of elastic plug 8 is connected with tubular handle 7, the front end face of elastic plug 8 is sealing cone face, test pressure gauge 5 and manual air valve 6 are installed on tubular handle 7.When the sealing cone face of the front end of elastic plug 8 is attached to the end face of the measured heat transfer pipe 12, open manual air valve 6, the high pressure gas in gas source hose 4 can enter the measured heat transfer pipe 12 through the central hole of tubular handle 7 and elastic plug 8.

[0019] One end of hold pressure rod 10 is fixedly connected with handle 11, the other end is provided with elastic sealing circular platform 9 that can block the pipe orifice of measured heat transfer pipe 12.

[0020] The material of elastic plug 8 and elastic sealing circular platform 9 is rubber. The material of high pressure gas pipe 1 and tubular handle 7 is stainless steel. The high pressure gas source can be field gas source or nitrogen (argon) gas cylinder gas source.

[0021] When using, connect high pressure gas pipe 1 to high pressure gas source, pressure reducing valve 3 enters working state. Punch work needs two people to cooperate, one person holds tubular handle 7 of punch device, the other person holds handle 11 of hold pressure device. Two people simultaneously top elastic plug 8 and elastic sealing circular platform 9 at the two ends of the same measured heat transfer pipe 12, open manual air valve 6 to punch the measured heat transfer pipe 12, observe pressure change through the reading of test pressure gauge 5, if pressure is stable, it shows that the measured heat transfer pipe 12 is normal, if pressure cannot rise or pressure cannot be stable, it shows that the measured heat transfer pipe 12 has leak point, find out fault point and handle it.

[0022] The utility model is used as the special maintenance tool of the inside leakage of column tube type cooler, its structure is simple, small, light in weight, simple and quick operation can quickly find leak point, save maintenance time and work amount, and is suitable for various field environment, has very high popularization and application value.

Claims

1. A quick tube-buckling device for a shell-and-tube cooler, characterized by, The device comprises a pressing device and a pressure holding device, the pressing device comprises a gas source hose (4), a test pressure gauge (5), a manual gas valve (6), a tubular handle (7) and an elastic plug (8), the gas inlet end of the gas source hose (4) is connected with a high-pressure gas source, one end of the tubular handle (7) is connected with the gas outlet end of the gas source hose (4), the other end is provided with the elastic plug (8) with a central hole, the rear end of the elastic plug (8) is connected with the tubular handle (7), the front end surface is a sealing conical surface which is matched with the end surface of one end of the measured heat transfer pipe (12), the inner cavity of the tubular handle (7) is communicated with the inner cavity of the measured heat transfer pipe (12) through the central hole of the elastic plug (8), the test pressure gauge (5) and the manual gas valve (6) are installed on the tubular handle (7), and the other end of the measured heat transfer pipe (12) is blocked by the pressure holding device.

2. A device for rapid pressure testing of a tube-type cooler according to claim 1, characterized in that The pressure holding device comprises a pressure holding rod (10) and a handle (11), one end of the pressure holding rod (10) is fixedly connected with the handle (11), and the other end of the pressure holding rod (10) is provided with an elastic sealing circular table (9) corresponding to the other end of the measured heat transfer pipe (12).

3. A device for rapid pressure testing of a tube bundle heat exchanger according to claim 2, characterized in that The gas inlet end of the gas source hose (4) is connected with the high-pressure gas source through a high-pressure gas pipe (1), and an inlet pressure gauge (2) and a pressure reducing valve (3) are installed on the high-pressure gas pipe (1).

4. A device for rapid pressure testing of a tube bundle heat exchanger according to claim 3, characterized in that The materials of the elastic plug (8) and the elastic sealing circular table (9) are rubber, and the materials of the high-pressure gas pipe (1) and the tubular handle (7) are stainless steel.

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