CN2591606Y

CN2591606Y - Pipe type leak hunting instrument

Info

Publication number: CN2591606Y
Application number: CN 02240151
Authority: CN
Inventors: 周希乔
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-11
Filing date: 2002-07-11
Publication date: 2003-12-10
Anticipated expiration: 2012-07-11

Abstract

The utility model relates to a pipe type leak detecting instrument for detecting pipeline leak, which is provided with a casing body 3, wherein the casing body uses a gas conveying pipe 15 as a connecting rod, is connected with a piston 5 and is provided with a gas chamber communicated with a piston cylinder. The casing body is provided with a gas inlet passage 1 communicated with the gas chamber B, the gas conveying pipe 15 which is provided with a gas hole 14 and a piston connecting pipe 7 of a pressure gauge 8 are respectively and fixedly connected with both ends of the piston 5, and the piston connecting pipe 7 is provided with a restoring spring 4. The gas conveying pipe 15 is provided with a sleeve pipe 6, and the end head of the gas conveying pipe is provided with a rubber sleeve 17. The leak detecting instrument is inserted into both ends of a pipe to be detected, the piston 5 is pushed by inputting compressed air, both ends of the pipe are sealed, and the sound condition and the leak condition of a complex pipeline can be immediately detected by observing the variation condition of the pressure gauge on the leak detecting instrument. The leak detecting repair can be finished without disassembling equipment, the time of detection is less than one minute, and the time of the leak detecting repair various heat exchangers in machinery space of large ships is greatly shortened. The utility model has convenient operation and has the correctness rate of 100%. The pipe type leak detecting instrument has small volume and has the weight of about 700g.

Description

The tubular type leak detector

Affiliated technical field

The utility model relates to a kind of tubular type leak detector that is used to detect pipe leakage.

Background technology

A lot of heat exchangers miscellaneous are housed in the large ship cabin, as: air cooler, equipment such as fresh-water cooler, oil cooler, fuel heater, barometric condenser, central air conditioner refrigeratory.The frame mode of these equipment is tubing heat exchanger mostly.Because of a certain or the corrosion of several tubes or the damage of other unknown cause leakage accident takes place often in the use, makes its main equipment cisco unity malfunction, and the operation of the arrestment of having to, to this heat exchanger catch Lou, the service work of leak stopping.For finding out the leakage accident reason, the method for common usefulness is problematic heat exchanger to be pulled down to hang move on to the maintenance place in the prior art, adopts reverse pressurization or rough forward leak hunting method to find out the leak position.The disassemble and assemble work amount of large-scale interchanger is quite big, and trouble very, and maintenance, leakage detection take usually about one day and just can finish, and small-sized interchanger also wanted just can finish in tens hours.

Summary of the invention

The purpose of this utility model is at detecting the pipe leakage difficulty in the prior art, the weak point of time-consuming, effort, provide a kind of time of leaking hunting short, leak hunting accurately, quick, easy to operate, need not dismounting equipment and just can finish the tubular type leak detector that leaks hunting and overhaul.

Technical solution of the present utility model is: a kind of tubular type leak detector that is used to detect pipe leakage, it is characterized in that it has one to make connecting rod by gas piping, and be connected in the piston of motion in the piston-cylinder and be shaped on the housing of the air chamber that is connected with piston-cylinder, also be shaped on the inlet channel that is connected with air chamber B on the housing, the gas piping and the manometric piston that are shaped on pore are taken over the two ends that are fixed on piston respectively, piston also is equipped with back-moving spring on taking over, wherein stretch out on the outer gas piping of housing sleeve pipe is housed, the rubber sleeve 17 of tool rotational freedom and the securing member of fastening rubber sleeve also are housed on its termination.

Air release 12 can be equipped with in the air chamber B upper end of housing 3 of the present utility model.Gas admittance valve 2 also is housed on the inlet channel 1.

On the excircle on the piston 5 of the present utility model back-moving spring 4 is housed also.

During use, insert pipe two ends to be checked, open gas admittance valve 2, enter air chamber B to input 0.4 ~ 0.6Mpa pressurized air from A with two the utility model leak detectors.The gas transmission in pipe of the pore 14 of pressurized air by gas piping 15, pressurized air has a certain pressure in that B is indoor simultaneously, promotes piston 5 drive gas piping 15 displacements backward.This moment, rubber sleeve 17 was tightened up expansion, and the pipe two-port sealing measuring makes to be full of pressurized air in the pipe, and closes gas admittance valve 2.Observe the tensimeter situation of change on the leak detector,, show that this pipe damages, has leakage if tensimeter 8 pressure descend; If the tensimeter tabular value is constant, illustrate that then this pipe is intact, do not have and leak.Open air release 12 then, under the effect of back-moving spring 4, the expanded rubber cover resets normally, extracts leak detector simultaneously out.

The utility model is compared with existing leak hunting technology, has following beneficial effect:

Can under the situation that detected equipment is not dismantled, detect the pipe quality and leak the place.The detection time of the whole process of leaking hunting within one minute can the very convenient leak detection work of finishing quickly equipment, and easy to operate, accuracy reaches 100%.Leak detector volume shape such as family expenses power drill size, shortage in weight 1000 grams.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model structure sectional structure synoptic diagram.

Among the figure: 1. gas channel, 2. air intake valve, 3. housing, 4. back-moving spring, 5. piston, 6. sleeve pipe, 7. piston is taken over, 8. tensimeter, 9. O-ring seal, 10. pad, 11. cylinder, 12. air releases, 13. bleed passages, 14. pore, 15. gas pipings, 16. sleeve pipes, 17. rubber sleeve, 18. nuts, 19. pads.

Embodiment

Fig. 1 has described the piston 5 and the housing 3 that is shaped on the air chamber that communicates with piston-cylinder that is connected in motion in the piston-cylinder 11 by gas piping 15 as connecting rod.Housing 3 adopts metal or adopts the ABS rigid plastic to make.Inlet channel 1 communicates with the air chamber B of cylinder 11 from the bottom of the likeness in form small of the stock.Air chamber B is a circular cavity, and is slightly less than cylinder 11.Insert the piston of gas piping 15 endoporus and take over 7 connection tensimeters 8.Be shaped on the gas piping 15 of pore 14 and the two ends that piston adapter 7 is fixed on piston 5 respectively.Piston 5 circumference are equipped with back-moving spring 4 outward.Gas piping 15 stretches out outside housing 3 in cylinder 11, and extension is equipped with sleeve pipe, is enclosed within on the gas piping 15, and with gas piping 15 certain interval is arranged, and gas piping is moved freely within it.Rubber sleeve 17 is equipped with in the end, and this rubber sleeve is by securing member nut 18 and pad 19 lockings.Pad 10 and O-ring seal 9 are equipped with in the position that gas piping is pressed close to housing 3.The effect of pad 10 is to enlarge contacting of sleeve pipe and body end face.O-ring seal 9 is the gaps between sealed air chamber and the gas piping.Back seat near tensimeter 8 connects (not shown) with a cylinder cap usually.To input gas channel 1, gas channel 1 is connected with air intake valve 2 to pressurized air, to control compressed-air actuated closing from A.Be shaped on bleed passage 13 on the air chamber B and link to each other, so that open venting after then finishing examining with venting valve 12.

Claims

1. tubular type leak detector that is used to detect pipe leakage, it is characterized in that it has one to make connecting rod by gas piping (15), and be connected in the piston (5) of motion in the piston-cylinder (11) and be shaped on the housing (3) of the air chamber that communicates with piston-cylinder, also be shaped on the inlet channel (1) that is connected with air chamber B on the housing (3), be shaped on the gas piping (15) of pore (14) and the piston of tensimeter (8) and take over the two ends that (7) are fixed on piston (5) respectively, piston is taken on (7) back-moving spring (4) also is housed, wherein stretch out on the outer gas piping (15) of housing (3) sleeve pipe (6) is housed, the rubber sleeve (17) of tool rotational freedom and the securing member of fastening rubber sleeve also are housed on its termination.

2. by the described leak detector of claim 1, it is characterized in that air release (12) is equipped with in the air chamber B upper end of housing (3).

3. by claim 1 or 2 described leak detectors, it is characterized in that the inlet channel (1) of housing (3) also is equipped with gas admittance valve (2).

4. by the described leak detector of claim 3, it is characterized in that also being equipped with on the excircle on the piston (5) back-moving spring (4).

5. by the described leak detector of claim 4, it is characterized in that housing (3) made by metal or rigid plastic.