CN201242488Y

CN201242488Y - Negative-pressure on-line foam leakage detection machine for tubular heat exchanger

Info

Publication number: CN201242488Y
Application number: CNU2008200903018U
Authority: CN
Inventors: 丁永生
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2009-05-20
Anticipated expiration: 2018-06-24

Abstract

The utility model relates to a tubular heat exchanger negative pressure online foam leak detection machine, which comprises a casing, an air compressor. The air compressor is arranged at one side in the casing, a liquid storage tank is arranged at the other side in the casing, a pipe rolling device is arranged between the air compressor and the liquid storage tank, and a foaming device is mounted at the top of the liquid storage tank. The utility model has the advantages of compact structure, reasonable design and convenient and rapid operation. The tubular heat exchanger negative pressure online foam detection machine is equipped with a special foam generating device, which generates foam with fast speed, high density, long duration time; environmental protection type leak detection agent is nontoxic and harmless, and is stirring-free in normal temperature operation, the leaking heat exchanging tube can be correctly detected. The machine can cause no damage when detecting the heat exchanging tube device, the injection speed is high, the liquid of 40 liters can be injected within 20 minutes, the work efficiency is high, and the detecting speed is high. As the utility model is equipped with the pipe rolling device, the liquid conveying tube can be automatically retracted and rolled up so that the work site can be tidy and orderly.

Description

The online foam leak tester of tubular heat exchanger negative pressure

Technical field

The utility model belongs to leak test plant, especially relates to a kind of shell and tube negative pressure heat interchanger leak tester.

Background technology

At present, the heat exchanger tube leak test of fuel-burning power plant, steam-condenser of thermal power plants heat exchanger tube and all tubular heat exchangers is a great problems that perplex power plant for a long time, the method of generally using had in the past, the candle method, the flare that is about to candle is aimed at the heat exchange mouth of pipe, observes the trend of flare, thereby judges whether to reveal, also useful in addition ultrasound wave and Helium leak detector, but all have certain defective because of restriction of its scope of application and field condition and sensitivity problem etc.

Summary of the invention

The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, easy to operate, quick, detects the heat exchanger tube of leakage accurately.

In order to achieve the above object, the technical solution adopted in the utility model is: comprise casing, air compressor, a side is installed air compressor in casing, and the casing opposite side is equipped with fluid reservoir, between air compressor and the fluid reservoir tube rolling device is housed, foam device is installed at position, fluid reservoir top.

The utility model has the advantages that:

1, compact conformation, reasonable in design, easy to operate, quick;

2, this machine is fast by the foam speed that special foam-making apparatus generates, density is high, longer duration, and the environment-friendly type leak-checking agent is nontoxic, and normal-temperature operation need not stir, and can check out the heat exchanger tube of leakage accurately.

3, adopt this machine heat exchanging equipment to detect, do not have any damage;

4, jet velocity is fast, and 40 liters of liquid can spray in 20 minutes, high efficiency, and detection speed is fast;

5, because these facility have tube rolling device, roll so woven hose can be shunk automatically, make the working site clean and tidy, regular.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is that the A of Fig. 1 is to synoptic diagram;

Fig. 3 is the utility model leakage detection apparatus enlarged diagram.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

By Fig. 1-Fig. 3 as can be known, the utility model comprises casing, air compressor, and a side is installed air compressor 12 in casing 1, and casing 1 opposite side is equipped with fluid reservoir 19, between air compressor 12 and the fluid reservoir 19 tube rolling device 13 is housed, foam device is installed at position, fluid reservoir 19 top.

Described foam device comprises that suction hose 18 joins by screw thread and main body 22 and is fixed on fluid reservoir 19 tops, main body 22 sidewalls have two joints 17,21 join by tracheae 20 and air compressor 12, joint 17 is provided with foaming chamber 24 with main body 22 centres and communicates, in the foaming chamber 24 fuse 23 is housed, its lower end part perisporium has pore 25, joint 21 has pore 26 with main body 22 sidewalls, fluid reservoir 19 is connected, joint 17,21 are connected to air compressor 12 by tracheae 20, on the main body 22 elbow is arranged, the transfusion sebific duct 15 that twines on transfusion sebific duct 15 and tube rolling device 13 joins.

Described casing 1 positive end face is equipped with gas-holder tensimeter 5, gas-holder delivery gauge 6, fluid reservoir tensimeter 7, power switch 8, gas source switch 9, flow control valve 10 respectively.

In casing 1 both sides handle 4 is housed respectively.

Transfusion sebific duct 15 front ends are installed shower nozzle 14.

The casing 1 position installation foot wheel 11 of going to the bottom.

Fluid reservoir 19 tops also are equipped with liquid injection pipe 2, and there are packoff 16 and gland bonnet 3 in its upper end.

The utility model excision and the condenser of stopping transport and to hunt leak, the recirculated water of front and back hydroecium is put totally, open the population door, the foreign material of cleaning end tube sheet surface attachment, with water and leak-checking agent ratio in 9:1, inject fluid reservoir by liquid injection pipe, energized, the sebific duct of will infusing is pulled to place to be painted from tube rolling device, pressing the power switch air compressor starts working, compressor quits work when gas-holder pressure rises to 8MPa, pressing gas source switch leak detection liquid produces foam fine and closely woven and that have certain tension force by foam device and is sprayed on the end tube sheet by shower nozzle, scrape the foam on flush end tube sheet surface with scraper plate, make the mouth of pipe form the abundant smooth white foam of one deck,, just can determine this pipe leakage when heat exchanger tube mouth of pipe place foam caves inward or vanishes, the hole that I was found 0.05mm when this equipment test chamber was detected the copper pipe wall thickness and is 1mm, steel pipe I when wall thickness is 0.5mm is found 0.01 millimeter hole.

Foam device described in the utility model is to adopt same air compressor air source of the gas, part pressurized air enters fluid reservoir, leak-checking agent is pressed into foam device, another part pressurized air directly enters foam device, mix the generation foam with leak detection liquid, generating foam under the effect of air pressure and be injected on the heat interchanger end tube sheet by woven hose, shower nozzle.

Claims

1. online foam leak tester of tubular heat exchanger negative pressure, comprise casing, air compressor, it is characterized in that: a side is installed air compressor (12) in casing (1), casing (1) opposite side is equipped with fluid reservoir (19), between air compressor (12) and the fluid reservoir (19) tube rolling device (13) is housed, foam device is installed at fluid reservoir (19) position, top.

2. the online foam leak tester of tubular heat exchanger negative pressure according to claim 1, it is characterized in that: described foam device comprises that suction hose (18) joins by screw thread and main body (22) and is fixed on fluid reservoir (19) top, main body (22) sidewall has two joints (17), (21) join by tracheae (20) and air compressor (12), joint (17) is provided with foaming chamber (24) with main body (22) centre and communicates, in the foaming chamber (24) fuse (23) is housed, its lower end part perisporium has pore (25), joint (21) has pore (26) with main body (22) sidewall, fluid reservoir (19) is connected, joint (17), (21) be connected to air compressor (12) by tracheae (20), main body has elbow on (22), goes up the transfusion sebific duct (15) that twines through transfusion sebific duct (15) and tube rolling device (13) and joins.

3. the online foam leak tester of tubular heat exchanger negative pressure according to claim 1 is characterized in that: the positive end face of described casing (1) is equipped with gas-holder tensimeter (5), gas-holder delivery gauge (6), fluid reservoir tensimeter (7), power switch (8), gas source switch (9), flow control valve (10) respectively.

4. the online foam leak tester of tubular heat exchanger negative pressure according to claim 1 is characterized in that: in casing (1) both sides handle (4) is housed respectively.

5. the online foam leak tester of tubular heat exchanger negative pressure according to claim 2 is characterized in that: transfusion sebific duct (15) front end is installed shower nozzle (14).

6. the online foam leak tester of tubular heat exchanger negative pressure according to claim 1 is characterized in that: casing (1) the position installation foot wheel (11) of going to the bottom.

7. the online foam leak tester of tubular heat exchanger negative pressure according to claim 1 is characterized in that: fluid reservoir (19) top also is equipped with liquid injection pipe (2), and there are packoff (16) and gland bonnet (3) in its upper end.