CN201421388Y

CN201421388Y - Gas tightness detecting device of pipes

Info

Publication number: CN201421388Y
Application number: CN2008200609518U
Authority: CN
Inventors: 仇云龙
Original assignee: ZHONGXIN ENERGY EQUIPMENT CO Ltd
Current assignee: ZHONGXIN ENERGY EQUIPMENT CO Ltd; Zhongxing Energy Equipment Co Ltd
Priority date: 2008-12-01
Filing date: 2008-12-01
Publication date: 2010-03-10
Anticipated expiration: 2018-12-01

Abstract

The utility model relates to a gas tightness detecting device of pipes, which comprises a fixed seat device, a gas and water inlet pipe and a sealing ring, wherein the sealing ring is a YX type dust-proof sealing ring and is fixed in the fixed seat device, the fixed seat device can move to two sides, when the device does not work, the YX type dust-proof sealing ring is not contacted with the cylindrical surface of a steel pipe, when the device works, the external surface of the YX type dust-proof sealing ring is jointed with the surface of a pipe and the inner contacting surface of the fixed seat device owing to the function of inner pressure, bigger the inner pressure is, more compact the joint between the surfaces is, and the possibility of leaking air does not exist.

Description

Pipe airtight test device

Technical field

The utility model relates to the device of a kind of airtight test device, particularly steel pipe class airtight test or hydraulic pressure inspection.

Background technology

Present industrial pipe fitting is produced and can't be tested to impermeability and water pressure resistance, the particularly resistance to pressure inspection of stainless-steel pipe, when processing without finishing, steel pipe must detect pipe fitting, as detect steel pipe and reach impermeability under the authorised pressure, then this pipe fitting is carried out finishing, as fail to reach standard, then need melt down processing again, so testing fixture needs the formed pipe fitting of roughing is detected, because roughing not line up is processed, the sealing of testing fixture then seals with the air packing line up, the difficulty of checking is bigger, existing producer generally adopts device shown in Figure 1 to detect, because being roughing, pipe fitting generates product, its mouth of pipe is irregularly shaped, it or not smooth flat, so to the packing washer well damage described in Fig. 1, need be to its frequent replacing, and when mouth of pipe degree of irregularity during greater than packing washer deformation degree, this pipe fitting then can't detect, be the pressurization detection owing to detect, the effect that the hydraulic means need provide corresponding pressure to reach sealing to top pressure closure in the pick-up unit, because the pressure that detects is bigger, hydraulic means pressure slowly increases, cause detection time long, pressure is big easy gas leakage or water.

The utility model content

The utility model pipe airtight test device, a kind of pipe airtight test device that can overcome the above problems is provided, it adopts seal to contact sealing with cylindrical, avoided contacting with the mouth of pipe and caused the seal deformed damaged with seal, the seal that adopts is a YX type dust-proof seal ring, provide pressure and pipe internal pressure to offset thereby need not hydraulic means, structure is simpler, and testing process is safer.

The utility model pipe airtight test device, it is made up of: fixation base structure, air inlet (water) pipe and YX type dust-proof seal ring, YX type dust-proof seal ring is fixed in the fixation base structure, fixation base structure can move to both sides, when device is not worked, YX type dust-proof seal ring does not contact with the steel pipe outer round surface, during device work because the internal pressure effect, make YX type dust-proof seal ring outside surface and pipe fitting surface and fixation base structure inner contact surface fit, big more its of internal pressure fitted closely more with the surface, do not exist the gas leakage may.The utility model has been simplified the structure of original pick-up unit, need not hydraulic means, has better sealed pipe fitting inside, strengthened the reliability that detects, and O-ring seal does not have wearing and tearing in testing process, thereby has avoided frequent replacing O-ring seal; O-ring seal is fixed in the fixation base structure, and O-ring seal matches with needing detection pipe cylindrical.

Description of drawings

Fig. 1 is original pipe airtight test installation drawing.

Fig. 2 is the utility model pipe airtight test installation drawing.

Fig. 3 is the utility model pipe airtight test device working condition figure.

Embodiment

The utility model pipe airtight test device, it is by fixation base structure, air inlet (water) pipe and YX type dust-proof seal ring are formed, as Fig. 2, YX type dust-proof seal ring is fixed in the fixation base structure, fixation base structure can move to both sides, when device is not worked, YX type dust-proof seal ring does not contact with the steel pipe outer round surface, as Fig. 3, owing to the internal pressure effect, make YX type dust-proof seal ring outside surface and pipe fitting surface and fixation base structure inner contact surface fit during device work, big more its of internal pressure fitted closely more with the surface, do not exist the gas leakage may.

Claims

1, pipe airtight test device, it is by fixation base structure, and air inlet, water pipe and O-ring seal are formed, and it is characterized in that: described O-ring seal is a YX type dust-proof seal ring.

2, pipe airtight test device according to claim 1, it is characterized in that: O-ring seal is fixed in the fixation base structure, and O-ring seal matches with needing detection pipe cylindrical.

3, pipe airtight test device according to claim 1, it is characterized in that: fixation base structure can move to both sides.