CN209354723U - For detecting the pneumatic pressure transmitter of highly pressurised liquid - Google Patents
For detecting the pneumatic pressure transmitter of highly pressurised liquid Download PDFInfo
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- CN209354723U CN209354723U CN201822249181.8U CN201822249181U CN209354723U CN 209354723 U CN209354723 U CN 209354723U CN 201822249181 U CN201822249181 U CN 201822249181U CN 209354723 U CN209354723 U CN 209354723U
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Abstract
The utility model relates to the pneumatic pressure transmitters for detecting highly pressurised liquid.Lower valve body bottom is equipped with high pressure liquid pressure oil oil inlet pipe, air inlet pipeline, detection gas piping are equipped at the top of upper valve body, rubber plug cap is equipped at the top of high pressure liquid pressure oil oil inlet pipe, mandril is equipped with above rubber plug cap, diaphragm is equipped at the top of mandril, needle is equipped with above diaphragm, compressed spring is equipped at the top of needle, the first gas chamber is formed inside spring pocket, it is the second gas chamber above diaphragm, gas vent is equipped in the middle part of diaphragm, gas vent is blocked in needle lower part, and gas vent is connected by exhaust nozzle, exhaust passage and atmosphere outlet mouth.The utility model can be used for detecting highly pressurised liquid, and upper limit of detection improves, good reliability, and testing result is accurate.
Description
Technical field
The utility model relates to detection device technology fields, and in particular to for detecting the Pneumatic pressure pick-up of highly pressurised liquid
Device.
Background technique
Pressure is detected to highly pressurised liquid, if high pressure liquid pressure are more than pressure gauge detection range, will be unable to use pressure gauge
Directly detected.For the high viscosity fluids material such as oil, high molecular polymer, since material viscosity is big, signal piping is easy
Siltation bridging, influences the detection accuracy of pressure gauge.
Summary of the invention
Purpose of the utility model is to solve the above problems and provide the Pneumatic pressure pick-ups for detecting highly pressurised liquid
The features such as device, detection performance stabilization, anti-seismic performance are good and natural explosion-proof, the pressure detecting being particularly suitable under hyperbaric environment.
To solve the above-mentioned problems, the technical solution adopted in the utility model is as follows:
For detecting the pneumatic pressure transmitter of highly pressurised liquid, which is characterized in that valve body includes upper valve body and lower valve body, under
Body base is equipped with high pressure liquid pressure oil oil inlet pipe, and air inlet pipeline, detection gas piping, high pressure liquid pressure oil are equipped at the top of upper valve body
Rubber plug cap is equipped at the top of oil inlet pipe, rubber plug cap open end downward, is equipped with mandril, is equipped with diaphragm at the top of mandril above rubber plug cap,
Mandril, diaphragm are in lower valve body；It is equipped with needle above diaphragm, is equipped with sealing ring at the top of needle, needle contacts close with sealing ring
Envelope, is cased with spring pocket outside compressed spring, spring pocket top be equipped with air inlet, air inlet and air inlet pipeline upper valve it is intracorporal into
The connection of gas channel, spring pocket inside form the first gas chamber, are the second gas chamber above diaphragm, detect gas piping and the second gas
Chamber, under the pressing force of compressed spring, sealing ring blocks the gas passage that the first gas chamber is passed through the second gas chamber, valve
Needle, sealing ring, compressed spring, spring pocket are in upper valve body；Gas vent is equipped in the middle part of diaphragm, gas vent is blocked in needle lower part,
Gas vent is connected by exhaust nozzle, exhaust passage and atmosphere outlet mouth；It detects gas piping and connects pressure gauge, detect gas piping
For closing pipe line.
Further, it is equipped with upper valve sleeve on the outside of spring pocket, is equipped with locking nut, upper valve sleeve, spring pocket top at the top of upper valve sleeve
It is cased with upper valve base, air inlet of the inlet channel on upper valve sleeve and spring pocket penetrates through.
Utility model works principle are as follows:
Sealing ring when high pressure liquid pressure oil oil inlet pipe does not access high pressure oil, under the extruding of compressed spring, on needle
Block the gas passage that the first gas chamber is passed through the second gas chamber, external source gas enters the first gas chamber by air inlet, and first
Air cavity chamber pressure is consistent with external source gas pressure, and the pressure gauge detection pressure detected on gas piping at this time is denoted as zero.
High-pressure and hydraulic oil stream enters high pressure liquid pressure oil oil inlet pipe, and under the pressure of high pressure liquid pressure oil, rubber plug cap deforms
Protruding upward, mandril moves up, and the upward teleblem piece of mandril, exhaust nozzle is plugged, and diaphragm moves up, and diaphragm pushes needle to move up,
Needle and sealing ring are detached from, and the gas passage that the first gas chamber is passed through the second gas chamber is opened, and the gas of the first gas chamber enters
Second gas chamber, second gas chamber's gas pressure are gradually increased, when second gas chamber's internal gas pressure downward to diaphragm with
When mandril is to its pressure balance below diaphragm, diaphragm restores balance, and outlet pressure is stablized in certain value at this time.Second air cavity
Gas pressure in room and detection gas piping keeps balancing, and detects pressure gauge detection pressure and high-pressure and hydraulic on gas piping
Oil pressure is corresponding.
When the second gas chamber, detection gas piping gases did escape or high-pressure and hydraulic oil pressure increase, diaphragm is lost
Go to balance, rubber plug cap deform it is protruding upward, repeat aforesaid operations, until balance, at this time the second gas chamber and detection gas
Gas pressure in pipeline keeps balance, and the pressure gauge detection pressure detected on gas piping is corresponding with high-pressure and hydraulic oil pressure.
When high-pressure and hydraulic oil pressure reduces, the mandril upward pressure being subject to below diaphragm is applied to less than the second gas chamber
Downward pressure on diaphragm, diaphragm are bent downwardly, and exhaust nozzle is opened, and the indoor gas of the second air cavity is logical by exhaust nozzle, exhaust
Road is to atmosphere efflux gas, and until diaphragm upper pressure and low pressure balance, diaphragm restores balance, at this time the second gas chamber with
The gas pressure detected in gas piping keeps balance, detects pressure gauge detection pressure and high-pressure and hydraulic oil pressure on gas piping
Power is corresponding.
When high-pressure and hydraulic oil stream goes out high pressure liquid pressure oil oil inlet pipe, rubber plug cap restores deformation, and mandril moves down, under diaphragm
It moves, mandril is not contacted with diaphragm, and gas is excluded by exhaust nozzle.At this point, the pressure reduction of the second gas chamber, squeezes in compressed spring
Under, needle is moved down to be contacted with sealing ring.Sealing ring blocks the gas passage that the first gas chamber is passed through the second gas chamber, detects at this time
Pressure gauge detection pressure on gas piping is zero.
Compared with prior art, the utility model advantageous effects are as follows:
(1) highly pressurised liquid high pressure can be converted into the low pressure output of low-pressure gas by the utility model, be carried out to output pressure
Detection, is then converted to high pressure liquid pressure, by reading the pressure value of low-pressure gas, improves operating accuracy, improves life
Produce efficiency.
(2) there is proportional relation between highly pressurised liquid and low-pressure gas, good reliability, testing result is accurate.It can be used for detecting
Highly pressurised liquid, upper limit of detection improve, and detection performance is stablized, and detection versatility is high.
(3) high pressure liquid pressure are converted to low-pressure gas pressure using theory of mechanics by the utility model, without using external
Power supply and battery, use cost is low, saves electric power energy, and explosion-proof performance is good, is suitable for the dangerous industry such as petroleum.
(4) highly pressurised liquid high pressure can be converted into the low pressure output of low-pressure gas by the utility model, and pressure gauge is connected to inspection
Out on gas piping, it not will cause detection gas piping siltation bridging, influence detection accuracy.
(5) the utility model uses compressed air for medium, non-environmental-pollution.Compressed air is easy to obtain in oil field
, it is easy to use.After use, medium directly outer can be discharged in air, very convenient without subsequent processing, laborsaving to save worry.
(6) the utility model use environment temperature is -20 DEG C ~ 70 DEG C, applied widely, can be used under high temperature environment.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, is mentioned after not making the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the pneumatic pressure transmitter structural schematic diagram for detecting highly pressurised liquid；
Description of symbols: upper valve body -11, lower valve body -12, flange -13, high pressure liquid pressure oil oil inlet pipe -21, air inlet pipe
Road -22, detection gas piping -23, rubber plug cap -24, mandril -25, guide sleeve -26, diaphragm -27, needle -28, sealing ring -29,
Compressed spring -30, spring pocket -31, spring base -32, the first gas chamber -33, the second gas chamber -34, gas vent -35, exhaust nozzle -
36, exhaust passage -37, upper valve sleeve -38, locking nut -39, upper valve base -40.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Refering to shown in Figure of description 1: for detecting the pneumatic pressure transmitter of highly pressurised liquid, valve body includes upper valve body 11
With lower valve body 12, upper valve body 11, lower valve body 12 are fixedly connected by flange 13, and 12 bottom of lower valve body is equipped with the oil inlet of high pressure liquid pressure oil
Pipeline 21 is equipped with air inlet pipeline 22, detection gas piping 23 at the top of upper valve body 11, is equipped at the top of high pressure liquid pressure oil oil inlet pipe 21
Rubber plug cap 24,24 open end of rubber plug cap downward, are equipped with mandril 25, are cased with guide sleeve 26, glue outside mandril 25 above rubber plug cap 24
24 upper edge of cock cap is directed to set 26 and pushes down, and guide sleeve 26 is connected through a screw thread with lower valve body central cavity, 26 pairs of guide sleeve tops
Bar plays support, positioning, guiding role, is equipped with diaphragm 27 at the top of mandril 25, mandril 25, diaphragm 27 are in lower valve body 12；Film
It is equipped with needle 28 above piece 27, sealing ring 29 is equipped at the top of needle 28, is equipped with compressed spring 30, compressed spring at the top of sealing ring 29
Spring pocket 31 is cased with outside 30, spring pocket 31 plays support, positioning action to needle 28, and 31 top of spring pocket is equipped with air inlet,
It is set to spring base 32, spring base 32 and spring pocket 31 at the top of spring pocket 31 to seal by sealing ring, air inlet and air inlet pipeline exist
The intracorporal inlet channel of upper valve is connected to, and the first gas chamber 33 is formed inside spring pocket 31, is the second gas chamber 34 above diaphragm 27,
Detection gas piping 23 is connected to the second gas chamber 34, and under the pressing force of compressed spring 30, sealing ring 29 blocks the first air cavity
Room 33 is passed through the gas passage of the second gas chamber 34, and needle 28, sealing ring 29, compressed spring 30, spring pocket 31 are in upper valve body
In；Gas vent 35 is equipped in the middle part of diaphragm 27, gas vent 35 is blocked in 28 lower part of needle, and gas vent passes through exhaust nozzle 36, exhaust passage
37 connect with atmosphere outlet mouth；It detects gas piping 23 and connects pressure gauge, detection gas piping 23 is closing pipe line.
It is equipped with upper valve sleeve 38 on the outside of spring pocket 31, is equipped with locking nut 39, locking nut and spring pocket at the top of upper valve sleeve 38
31 are threadedly coupled, and upper valve sleeve, spring pocket top are cased with upper valve base 40, air inlet of the inlet channel on upper valve sleeve and spring pocket
Perforation, the position of spring pocket can by threaded adjustment thereon, rotate locking nut can fixed spring set position.
The measurement method of the utility model are as follows: the pressure that high pressure liquid pressure oil oil inlet pipe connects high pressure liquid pressure oil is to be detected
Pressure PDetection, air inlet pipeline connection external source gas supply pipeline, supplying gas pressure is
PInput, detection gas piping connection pressure gauge, gage pressure numerical value is POutput.
The utility model carries out equipment verification before detection:
The utility model first checks for whether connection line has leakage before use, and high pressure liquid pressure oil oil inlet pipe is not connected to
High pressure liquid pressure oil, air inlet pipeline cut-in pressure PInputFor the gas source of 0.35MPa, flue then is being detected with piston manometer
Road detects output pressure signal P0, output pressure P at this time0It should be standard value, when output pressure is lower than standard value, first unclamp
Locking nut, then adjust upper valve sleeve and rotate to the right, by locking nut screwing after increase output pressure signal.Conversely, then should be by valve
Seat rotates to the left, and reduces output pressure signal.By above-mentioned verification, make input pressure standard value P0。
Coefficient determines: high pressure liquid pressure oil oil inlet pipe connects the high pressure liquid pressure oil of 40MPa, air inlet pipeline cut-in pressure PInput
For the gas source of 0.35MPa, output pressure signal P then is detected in detection gas piping with piston manometerOutput 1, this is specific
It is 0.2MPa that embodiment, which detects pressure,.
Detection: high pressure liquid pressure oil oil inlet pipe connects high pressure liquid pressure oil P to be detectedDetection, air inlet pipeline cut-in pressure is
Then the gas source of 0.35MPa detects output pressure signal P in detection gas piping with piston manometerOutput 2, to be detected
High pressure liquid pressure oil PDetectionCalculation formula are as follows:
40/PDetection= (POutput 1- P0)/( POutput 2- P0)
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, retouching in above embodiments and description
The preference of only the utility model is stated, the utility model is not limited by above-mentioned preference, is not departing from the utility model
Under the premise of spirit and scope, the utility model can also have various changes and modifications, these changes and improvements both fall within practical
In novel protected range.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (2)
1. the pneumatic pressure transmitter for detecting highly pressurised liquid, which is characterized in that valve body includes upper valve body and lower valve body, lower valve
Body bottom is equipped with high pressure liquid pressure oil oil inlet pipe, is equipped with air inlet pipeline, detection gas piping at the top of upper valve body, high pressure liquid pressure oil into
Rubber plug cap is equipped at the top of oil pipe line, rubber plug cap open end downward, is equipped with mandril, diaphragm, top are equipped at the top of mandril above rubber plug cap
Bar, diaphragm are in lower valve body；Needle is equipped with above diaphragm, needle contacts sealing with sealing ring, compression bullet is equipped at the top of needle
Spring, is cased with spring pocket outside compressed spring, spring pocket top be equipped with air inlet, air inlet and air inlet pipeline upper valve it is intracorporal into
The connection of gas channel, spring pocket inside form the first gas chamber, are the second gas chamber above diaphragm, detect gas piping and the second gas
Chamber, under the pressing force of compressed spring, sealing ring blocks the gas passage that the first gas chamber is passed through the second gas chamber, valve
Needle, sealing ring, compressed spring, spring pocket are in upper valve body；Gas vent is equipped in the middle part of diaphragm, gas vent is blocked in needle lower part,
Gas vent is connected by exhaust nozzle, exhaust passage and atmosphere outlet mouth；It detects gas piping and connects pressure gauge, detect gas piping
For closing pipe line.
2. according to claim 1 for detecting the pneumatic pressure transmitter of highly pressurised liquid, which is characterized in that on the outside of spring pocket
Equipped with upper valve sleeve, locking nut is equipped at the top of upper valve sleeve, upper valve sleeve, spring pocket top are cased with upper valve base, and inlet channel is through upper
Air inlet on valve pocket and spring pocket penetrates through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249181.8U CN209354723U (en) | 2018-12-29 | 2018-12-29 | For detecting the pneumatic pressure transmitter of highly pressurised liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822249181.8U CN209354723U (en) | 2018-12-29 | 2018-12-29 | For detecting the pneumatic pressure transmitter of highly pressurised liquid |
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| Publication Number | Publication Date |
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| CN209354723U true CN209354723U (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822249181.8U Active CN209354723U (en) | 2018-12-29 | 2018-12-29 | For detecting the pneumatic pressure transmitter of highly pressurised liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763127A (en) * | 2020-12-28 | 2021-05-07 | 南京沃天科技股份有限公司 | Novel pneumatic pressure transmitter |
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2018
- 2018-12-29 CN CN201822249181.8U patent/CN209354723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763127A (en) * | 2020-12-28 | 2021-05-07 | 南京沃天科技股份有限公司 | Novel pneumatic pressure transmitter |
| CN112763127B (en) * | 2020-12-28 | 2022-09-06 | 南京沃天科技股份有限公司 | Pneumatic pressure transmitter |
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