CN101922990B - Self-operated micropressure controller - Google Patents

Self-operated micropressure controller Download PDF

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Publication number
CN101922990B
CN101922990B CN2010102254682A CN201010225468A CN101922990B CN 101922990 B CN101922990 B CN 101922990B CN 2010102254682 A CN2010102254682 A CN 2010102254682A CN 201010225468 A CN201010225468 A CN 201010225468A CN 101922990 B CN101922990 B CN 101922990B
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CN
China
Prior art keywords
controller
valve
diaphragm
spring
pressure
Prior art date
Application number
CN2010102254682A
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Chinese (zh)
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CN101922990A (en
Inventor
罗凡
鲍家信
余承善
Original Assignee
上海大田阀门管道工程有限公司
上海市特种设备监督检验技术研究院
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Priority to CN2010102254682A priority Critical patent/CN101922990B/en
Publication of CN101922990A publication Critical patent/CN101922990A/en
Application granted granted Critical
Publication of CN101922990B publication Critical patent/CN101922990B/en

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Abstract

The invention relates to the technical field of pressure control and measurement, in particular to a self-operated micropressure controller which is composed of a valve controller and a stop valve. The self-operated micropressure controller is characterized in that the controller is composed of a support base, an end cover, a tray, a platen and a rotary spring base arranged below the tray, wherein the tray and the platen are fixedly connected with a push rod, and the rotary spring seat is provided with a regulation spring; a diaphragm and an O-type seal ring are arranged between a platen and the tray; the valve rod of the stop valve and the push rod are connected and are combined by a connection sleeve which is provided with a buffer spring; and the stop valve is composed of a valve body, the O-type seal ring, a pressing sleeve, a compression ring and a valve rod. Compared with the prior art, the pre-compression force of the buffer spring is more than the acting force of the whole journey of the regulation spring, a disconnecting device bears 16MPa of back pressure. The invention is suitable for a pressure instrument (0-0.1 MPa) with high precision and small range to measure high-precision pressure value within large pressure range (0-16 MPa).

Description

Self-operated micropressure controller

[technical field]

The present invention relates to pressure control and technical field of measuring, specifically in a kind of automatic control by self-operated micropressure controller, can use range is that (0~0.1MPa) manometer is measured the force value in 0~0.1MPa interval in the pressure range of 0~16MPa, can allow the range be that (0~0.1MPa) manometer uses at pressure up to the self-operated micropressure controller on the equipment of 16MPa.

[background technology]

Tonometric sensor all has certain measurement range and precision, and this just makes high-precision low pressure sensor carry out high-precision low voltage value measurement in a big pressure limit to be difficult to carry out.For example: the fast opening type pressure container that is widely used in national economy every field (little pressure pot for cooking rice in daily life, big import and export to spaceship).For prevent because of fast-open door panel do not close fully with regard to boost or equipment in pressure do not have to discharge and fully just open the security incident that door closure causes, fast opening type pressure container must have the regulation that the safety interlocking function is country's " fixed safe technology of pressure vessel supervision rules ".Accomplish closure or openness fast opening type pressure container safely, the safety interlocking function must make the force value in the pressure vessel could open and close very much fast-open door panel (the operating pressure value of present a large amount of safety interlocking function of quickly-actuated pressure vessel is between 0~0.03MPa) near zero the time, and the manometer that pressure vessel carries all is for the range that satisfies its working pressure and precision (working pressure is between 0~15MPa usually), so can't satisfy the operating pressure value of safety interlocking function is measured and is judged.If use the manometer of the little range of high precision, then, also can't install and use because range can't satisfy the awp of pressure vessel.

Therefore, exploitation place the pressure transducer connecting line, utilize the medium self-energy and automatically realize: before pressure medium overpressure transducer range, cut off and the sensor connecting line, make sensor avoid superpressure and destroy; After pressure medium is got back to the pressure transducer range, open and the sensor connecting line, sensor can recover the control device of surveying work, thereby change China and do not have under the back pressure of big pressure (0~16MPa), (present situation of the self-operated micropressure controller of 0~0.1MPa) control and cut-out is very important to carry out low-pressure.

[summary of the invention]

The objective of the invention is to: a kind of self-operated micropressure controller device is provided, realization is according to automatic fast shut-off of set pressure and unlatching pipeline, make range relatively little (0~0.1MPa) manometer is measured the force value in 0~0.1MPa interval in the pressure range of 0~16MPa, the actual use occasion of expansion high precision minute-pressure instrument.

The scheme that the present invention solves its technical matters is: a kind of self-operated micropressure controller, comprise valve body controller and stop valve, it is characterized in that controller is by carrier base (15), pallet (19) that end cap (20) is fixedlyed connected with push rod (11) and platen (22) and the rotating missile spring abutment (13) that is placed under the pallet constitute, described rotating missile spring abutment (13) is provided with regulating spring (14), be provided with diaphragm (18) and O RunddichtringO (21) between platen and the pallet, the stop valve valve rod was combined with being connected by an adapter sleeve (9) of push rod, adapter sleeve (9) is provided with buffer spring (12), stop valve is by valve body (1), O type circle sealing (2,4,5), gland (3), pressure ring (6) and valve rod (8) are formed, fluid media (medium) divides two the road to enter stop valve import and controller diaphragm epicoele simultaneously, when fluid medium pressure is set cut-out pressure less than controller, controller is failure to actuate, the medium that flows into stop valve is flowed out by valve export through valve seat, after pressing in the fluid media (medium) greater than controller setting cut-out pressure, medium enter acting force that the diaphragm epicoele produced greater than the pre-compression force of regulating spring less than the buffer spring pre-compression force, diaphragm drive pallet and push rod compression adjustment spring are to bottom offset, buffer spring is failure to actuate, reach off-position up to the valve rod that links to each other with push rod, at this moment the acting force of diaphragm top continues to increase, when acting force greater than regulating spring, during the buffer spring force of compression, diaphragm drives push rod, regulating spring, buffer spring is together to bottom offset, push rod is at the adapter sleeve intrinsic displacement, do not drive valve rod and do action, pallet up to diaphragm puts in place, this moment, the controller internal pressure continued to increase until working pressure 16MPa, the diaphragm controller cavity of resorption of fitting is not fully done action, and the valve rod of stop valve is the total travel force of compression of regulating spring and buffering spring to the sealing force of valve base sealing O type circle.

Described buffer spring is arranged on the adapter sleeve, described adapter sleeve connects controller push rod and valve rod, institute's drawn stem acting force is during greater than the force of compression of buffer spring, push rod is under the guiding of adapter sleeve, downward slide displacement, described buffer spring pre-compression force is greater than the acting force of regulating spring total travel, the total travel acting force that drives buffer spring can bear acting force much smaller than diaphragm, diaphragm is fitted before the controller cavity of resorption fully, the controller internal pressure is in diaphragm can tolerance range, and described buffer spring structure makes this controller bear back pressure to reach 16MPa.

Described regulating spring, this spring is placed on the spring base, can regulate the pre-compression force of regulating spring by the screw thread rotation spring base, the closing of adjustment control, opening pressure.

Described diaphragm adopts high-intensity thin rubber diaphragm, and has increased a buffering O type circle below diaphragm, and diaphragm moves downward the collision that causes when preventing that air pressure from increasing suddenly.

Described stop valve external seal adopts the sealing of O type circle, and described O type circle adopts fluororubber to make, and the adjusting sensitivity of valve is improved greatly, and the return difference of generation is littler.

The invention has the beneficial effects as follows: the present invention compares with existing technology, between the push rod of valve rod and connection diaphragm, increased a preloading spring, it is buffer spring, the pre-compression force of this spring design is greater than the acting force of regulating spring total travel, be that valve rod is when moving in doing total travel, buffer spring is not done displacement, after valve rod reaches off-position, diaphragm drives buffer spring one section cushion stroke, up to diaphragm applying controller cavity of resorption, after promptly having guaranteed diaphragm applying controller cavity of resorption, cavity pressure continues to increase diaphragm and has not been subjected to pulling force, buffer spring guarantees that again valve has certain sealing force simultaneously, make self-operated micropressure controller bear back pressure and reach 16Mpa, diaphragm is thinner than general operated pneumatic valve rubber diaphragm, clamp with a sheet metal up and down, and below diaphragm, increased a buffering O type circle, diaphragm moves downward the collision that causes when preventing that pressure medium from increasing suddenly, stop valve uses the rubber o-ring sealing, littler than traditional packing seal friction force, the adjusting sensitivity of self-operated micropressure controller is improved greatly, valve rod linked to each other with being connected by an adapter sleeve of push rod, valve rod travel is convenient to be adjusted, (0~0.1MPa) can arbitrarily adjust by the rotating missile spring abutment set pressure, debugging is convenient, self-operated micropressure controller is separable to be two parts, convenient when maintain and replace O type circle and diaphragm, simply, monnolithic case of the present invention is small and exquisite, processing is simple, and convenient operating maintenance saves time and cost, the present invention is specially adapted to high precision, the manometer of little range (0~0.1MPa) in big pressure limit (measuring the high-precision pressure value in 0~16MPa), is the indispensable device of safety interlock device of fast opening type pressure container at X-ray inspection X.

[description of drawings]

Fig. 1 is a structure cut-open view of the present invention.

[embodiment]

Also in conjunction with the accompanying drawings the present invention is done further detailed description below by specific embodiment.

Referring to Fig. 1,1 is valve body, and 2 is the sealing of O type circle, and 3 is gland, 4 is the sealing of O type circle, and 5 is the sealing of O type circle, and 6 is pressure ring, and 7 is interior hexagonal awl end holding screw, 8 is valve rod, and 9 is adapter sleeve, and 10 is interior hexagonal awl end holding screw, and 11 is push rod, 12 is buffer spring, and 13 is spring base, and 14 is regulating spring, and 15 is carrier base, 16 is the sealing of O type circle, and 17 is interior hexagonal awl end holding screw, and 18 is diaphragm, and 19 is pallet, 20 is end cap, and 21 is the sealing of O type circle, and 22 is platen, and 23 is hexagonal nut.

A kind of self-operated micropressure controller is made up of pressure sensing and pressure cut off two partial functions.It is characterized in that controller is made of carrier base (15), end cap (20), the pallet (19) of fixedlying connected with push rod (11) and platen (22) and rotating missile spring abutment (13).Rotating missile spring abutment (13) is provided with regulating spring (14) and buffering spring (12).Be provided with diaphragm (18) and O RunddichtringO (21) between platen and the pallet, the stop valve valve rod is connected by adapter sleeve (9) with push rod (11) to be combined.Stop valve is made up of valve body (1), the sealing of O type circle (2,4,5), gland (3), pressure ring (6) and valve rod (8).Principle of work: fluid media (medium) divides two the road to enter stop valve import and controller diaphragm epicoele simultaneously.When pressing less than stop valve setting cut-out pressure in the fluid media (medium), the fluid that flows into stop valve flows out by outlet.After pressing in the fluid media (medium) greater than stop valve setting cut-out pressure, medium enters acting force that the diaphragm epicoele the produced acting force greater than regulating spring, at first compression is regulating spring, reach off-position up to valve rod, at this moment the acting force of diaphragm top continues to increase, to bottom offset, but valve rod is not done action with the push rod of diaphragm interlock, regulating spring, buffer spring in drive, puts in place up to the pallet of diaphragm.

Claims (2)

1. self-operated micropressure controller, comprise valve body controller and stop valve, it is characterized in that controller is by carrier base (15), pallet (19) that end cap (20) is fixedlyed connected with push rod (11) and platen (22) and the rotating missile spring abutment (13) that is placed under the pallet constitute, described rotating missile spring abutment (13) is provided with regulating spring (14), be provided with diaphragm (18) and O RunddichtringO (21) between platen and the pallet, the stop valve valve rod was combined with being connected by an adapter sleeve (9) of push rod, adapter sleeve (9) is provided with buffer spring (12), stop valve is by valve body (1), O type circle sealing (2,4,5), gland (3), pressure ring (6) and valve rod (8) are formed, fluid media (medium) divides two the road to enter stop valve import and controller diaphragm epicoele simultaneously, when fluid medium pressure is set cut-out pressure less than controller, controller is failure to actuate, the medium that flows into stop valve is flowed out by valve export through valve seat, after pressing in the fluid media (medium) greater than controller setting cut-out pressure, medium enter acting force that the diaphragm epicoele produced greater than the pre-compression force of regulating spring less than the buffer spring pre-compression force, diaphragm drive pallet and push rod compression adjustment spring are to bottom offset, buffer spring is failure to actuate, reach off-position up to the valve rod that links to each other with push rod, at this moment the acting force of diaphragm top continues to increase, when acting force greater than regulating spring, during the buffer spring force of compression, diaphragm drives push rod, regulating spring, buffer spring is together to bottom offset, push rod is at the adapter sleeve intrinsic displacement, do not drive valve rod and do action, pallet up to diaphragm puts in place, this moment, the controller internal pressure continued to increase until working pressure 16MPa, the diaphragm controller cavity of resorption of fitting is not fully done action, and the valve rod of stop valve is the total travel force of compression of regulating spring and buffering spring to the sealing force of valve base sealing O type circle.
2. a kind of self-operated micropressure controller as claimed in claim 1, it is characterized in that described buffer spring is arranged on the adapter sleeve, described adapter sleeve connects controller push rod and valve rod, institute's drawn stem acting force is during greater than the force of compression of buffer spring, push rod is under the guiding of adapter sleeve, downward slide displacement, described buffer spring pre-compression force is greater than the acting force of regulating spring total travel, the total travel acting force that drives buffer spring can bear acting force much smaller than diaphragm, diaphragm is fitted before the controller cavity of resorption fully, the controller internal pressure is in diaphragm can tolerance range, and described buffer spring structure makes this controller bear back pressure to reach 16MPa.
CN2010102254682A 2010-07-13 2010-07-13 Self-operated micropressure controller CN101922990B (en)

Priority Applications (1)

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CN2010102254682A CN101922990B (en) 2010-07-13 2010-07-13 Self-operated micropressure controller

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Application Number Priority Date Filing Date Title
CN2010102254682A CN101922990B (en) 2010-07-13 2010-07-13 Self-operated micropressure controller

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CN101922990B true CN101922990B (en) 2011-08-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013205155A1 (en) * 2013-03-22 2014-09-25 Robert Bosch Gmbh Device for fastening a pressure sensor to a support plate provided with a pressure channel
CN103527271B (en) * 2013-10-21 2015-07-08 上海交通大学 Passive low-temperature heat energy organic matter working medium electricity generation method
US10060302B2 (en) 2013-10-21 2018-08-28 Shanghai Jiaotong University Passive low temperature heat sources organic working fluid power generation method
CN104215386A (en) * 2014-09-30 2014-12-17 成都卓微科技有限公司 Limited diaphragm guide type underwater pressure sensor
CN104215384A (en) * 2014-09-30 2014-12-17 成都卓微科技有限公司 Diaphragm guide type underwater pressure sensor for preventing diaphragm damage
CN108593188B (en) * 2018-04-02 2020-06-12 哈尔滨工业大学 Pressure sensing system

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Publication number Priority date Publication date Assignee Title
CN2229019Y (en) * 1994-12-17 1996-06-12 鞍山自控仪表(集团)股份有限公司 Self-force pressure regulating valve
JP3622935B2 (en) * 1996-07-15 2005-02-23 株式会社桂精機製作所 Self-diagnosis type pressure regulator
NL1013195C2 (en) * 1999-10-01 2001-04-05 Peter Frederik Marinus Johan V Automatic operating valve.
CN2687458Y (en) * 2004-02-26 2005-03-23 张泽勇 Self-operated flow control valve
US7539560B2 (en) * 2007-01-05 2009-05-26 Dresser, Inc. Control valve and positioner diagnostics
CN201013990Y (en) * 2007-02-15 2008-01-30 孙成彬 Self-fource pressure difference control valve
CN201013992Y (en) * 2007-02-15 2008-01-30 孙成彬 Self operated flow control valve

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Granted publication date: 20110824

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