CN2731426Y

CN2731426Y - Safety pressure device

Info

Publication number: CN2731426Y
Application number: CN 200420074760
Authority: CN
Inventors: 郭兴武; 韩信; 王金勇
Original assignee: Wolong Sealing Machinery Mfg Co ltd Puyang City
Current assignee: Wolong Sealing Machinery Mfg Co ltd Puyang City
Priority date: 2004-09-29
Filing date: 2004-09-29
Publication date: 2005-10-05
Anticipated expiration: 2014-09-29

Abstract

The utility model relates to a safety pressure device, mainly used for the technical field of petrochemical industry, such as the oil well of an oil field, a water well, various mediums of a pipeline vessel and the measure of various gas pressures such as water, oil and mud. The safety pressure device is composed of pipeline connecting housing, a pressure meter connecting housing, a piston, etc. Both ends of the conduit connecting housing respectively are provided with an inner hole thread. A piston cavity is arranged in the housing. The piston cavity is provided with the piston. The front end of piston is provided with a pit. One end of the manometer which is connected with the shell is provided with an outer thread. The other end of the manometer is provided with the inner hole thread. The piston cavity is arranged in the housing. The piston cavity is provided with the piston. Front end of the piston is provided with a cuspidate portion. The pipeline connecting housing and the pressure meter connecting housing are connected into integration through the threads. The pressure device has a small bulk and can be operated conveniently. The safety pressure device separates thoroughly the communication between the medium which is in the pipeline and the medium which is in the pressure meter. The utility model has the advantages of good sealing, non leakage the medium, good safety, not polluting environment, enhancing the service life of the manometer.

Description

Safe pressure obtaning device

One, technical field: the utility model relates to a kind of safe pressure obtaning device, is mainly used in petrochemical industry, as the various media in the oil well in oil field, well, the pipe container, the measurement of water, oil, mud and all gases pressure.

Two, background technology: at present, in China's oil, in the chemical field, to various media such as the water in the pipe container, oil, when mud and all gases pressure are measured, traditional mode is: medium directly passes through pipeline, valve, enter tensimeter, after medium enters tensimeter, demonstrate pressure reading on the tensimeter, at this moment, as medium is mordant medium or the medium that contains impurity, the medium of easy crystallization, time has been grown and will influence tensimeter and survey and to read degree of accuracy, so that shorten manometric serviceable life, the more important thing is when changing tensimeter, if valve invalidation or occur forgetting under the situation of valve-off, high-pressure medium in the pipeline, hazardous medium or expensive medium will leak out, contaminated environment so not only, more fearful is the heavy losses that can cause personal injury and property, very dangerous.

Three, summary of the invention: in order to solve the problem that exists in the above-mentioned background technology, the purpose of this utility model be to provide a kind of measuring channel pressure, long service life and degree of accuracy is high, pipeline internal medium can not leak safe pressure obtaning device.

The technical solution of the utility model realizes in the following manner:

This pressure obtaning device connects housing, tensimeter connection housing and piston by pipeline and forms, and the two ends that pipeline connects housing have inner hole thread respectively, and plunger shaft is arranged in the housing, and piston is arranged in the plunger shaft, and piston nose has pit, and there is groove the rear end; Tensimeter connects housing one end external thread, and the other end has inner hole thread, and plunger shaft is arranged in the housing, piston is arranged in the plunger shaft, and piston nose has tip, and there is groove the rear end, pipeline connects housing and is connected housing with tensimeter by being threaded, and both connect the end stepped hole.

The utility model compared with prior art has following advantage:

1, this product has thoroughly cut off being communicated with of medium in pipeline internal medium and the tensimeter, thereby has satisfied the needs of pressure medium in the measuring channel, and has improved manometric serviceable life.

2, the pipeline of this product connects housing and has replaced valve, saves valve part, and has saved the complicated procedures of open and close valves, the more important thing is that medium does not leak, and both safety was free from environmental pollution again.

3, this small product size is little, and is easy to operate, good seal performance.

Four, description of drawings:

Fig. 1 is a general structure cut-open view of the present utility model

Five, embodiment:

Below in conjunction with accompanying drawing the utility model is elaborated:

Provided concrete structure of the present utility model among Fig. 1, it connects housing 13, tensimeter connection housing 6 and transmission piston 9,16 etc. by pipeline and forms.

There is inner hole thread 20 at an end 19 places that pipeline connects housing 13, and there is inner hole thread 8 at the other end 7 places, and plunger shaft 18 is arranged in the housing 13, and piston 16 is housed in the plunger shaft, and piston nose has pit 15, and " O " shape O-ring seal is housed in the rear end groove 17; The end that tensimeter connects housing 6 has external thread, there is inner hole thread 3 at the other end 4 places, plunger shaft 5 is arranged in the housing 6, piston 9 is housed in the plunger shaft, and push rod 12 front ends of piston have tip 14, and " O " shape O-ring seal is housed in the rear end groove 10, tensimeter connects housing 6 and fuses by external thread is connected housing 13 with pipeline inner hole thread 8, both connect the end stepped hole 11, but piston 9,16 along the hole 11 move left and right so that the tip 14 of piston 9 push rods withstands on pit 15 places of piston 16.

During use, pipeline connects housing 13 and is connected with tested pressure pipeline 21 by inner hole thread 20, and tensimeter connects housing 6 and is connected with tensimeter 1 by inner hole thread 3, and all there is sealing gasket 2 junction, prevents dielectric leakage.

Principle of work: when the working medium pressure in the tested pressure pipeline 21 increases, plunger shaft 18 the right pressure increase, force piston 16 to move to left, promoting piston 9 simultaneously moves to left, and the medium in the compression piston chamber 5 is delivered to tensimeter, on the contrary, when the pressure medium in the tested pressure pipeline reduces, be delivered to tensimeter equally by the movement pressure that presses piston 9 and piston 16.

After pressure measurement finishes, tensimeter does not unload separately, prevent dielectric leakage in the tensimeter, therefore tensimeter should connect housing together with tensimeter and connects housing from pipeline and unload, because be moved to the left under the effect of piston 16 this moment pressure medium in tested pressure pipeline, finally be sealed in stepped hole 11 places of housing end face, guarantee that the medium in tensimeter and the pressure pipeline does not all produce leakage.

Claims

1, a kind of safe pressure obtaning device, it is characterized in that: it connects housing (13) by pipeline, tensimeter connects housing (6) and piston (9), (16) form, the two ends that pipeline connects housing (13) have inner hole thread (20) respectively, (8), plunger shaft (18) is arranged in the housing, piston (16) is arranged in the plunger shaft, piston nose has pit (15), there is groove (17) rear end, tensimeter connects housing (6) one ends external thread, the other end has inner hole thread (3), plunger shaft (5) is arranged in the housing, piston (9) is arranged in the plunger shaft, piston nose has tip (14) rear end that groove (10) is arranged, and pipeline connects housing (13) and is connected housing (6) with tensimeter by being threaded, and both connect the end stepped hole (11).

2, according to the described safe pressure obtaning device of claim 1, it is characterized in that: in the groove (17) of piston (16) and the groove (10) of piston (9) " O " shape O-ring seal is housed all.