CN108662155A - A kind of gas pressure regulating valve with temperature compensation function - Google Patents
A kind of gas pressure regulating valve with temperature compensation function Download PDFInfo
- Publication number
- CN108662155A CN108662155A CN201810703676.5A CN201810703676A CN108662155A CN 108662155 A CN108662155 A CN 108662155A CN 201810703676 A CN201810703676 A CN 201810703676A CN 108662155 A CN108662155 A CN 108662155A
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- Prior art keywords
- valve
- valve body
- bellows
- regulating valve
- connect
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 29
- 230000006870 function Effects 0.000 description 8
- 239000012159 carrier gas Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007445 Chromatographic isolation Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011208 chromatographic data Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000004454 trace mineral analysis Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Flow Control (AREA)
Abstract
A kind of gas pressure regulating valve with temperature compensation function,The regulating valve seat being connect including regulation valve body and with regulation valve body,In the regulation valve body bellows is equipped with regulating valve seat junction,One end is set in the bellows is equipped with retainer,The side that the retainer is not connect with bellows is equipped with adjustment spring,The adjustment spring connects jacking block,The jacking block controls adjustment spring by driving unit command displacement,The bellows other end is equipped with valve,Guide rod is equipped in the valve,The guide rod passes through valve and one end is connect with retainer,The other end connects flap,It is respectively equipped with entrance cavity and outlet plenum in the regulating valve seat and regulation valve body,The entrance cavity and outlet plenum are separately positioned on the both sides of valve,The entrance cavity connects gas access,The outlet plenum connects gas vent,The present invention has temperature compensation function,Significantly provide temperature characterisitic,Reducing the precision of voltage regulation caused by temperature change reduces,Improve qualitative repeatablity.Structure and control are simple and reliable, manufacture and low production cost, it is easy to accomplish automatically control, and novelty simple in structure, significantly reduce production cost.
Description
Technical field
The present invention relates to one kind to carry for gas chromatograph or other gas analysis instrument fields, specifically one kind
The gas pressure regulating valve of temperature compensation function.
Background technology
Gas chromatograph is by carrier gas and auxiliary gas system, sampling system, chromatographic column chamber system, detecting system, chromatographic data
The five big systems such as processing composition, gas pressure regulating device（Pressure maintaining valve）It is answered extensively in carrier gas and all kinds of auxiliary gas gas circuits
With, gas pressure maintaining valve is a kind of pneumatic controller, it is connected in gas circuit, after adjusting or setting certain pressure value, device profit
With its self-regulating function, you can export stable pressure.Pressure maintaining valve is suitable for requiring carrying out essence to gas pressure or gas flow
The occasion really controlled.Such as:All kinds of chromatographs, Determination of Gases in Metals instrument, Atomic Absorption Spectrometer, total organic carbon analyzer
Deng.
Since flow rate of carrier gas is one of the important operation condition for influencing chromatographic isolation and qualitative analysis, therefore it is required that carrier gas
Flow speed stability.In constant temperature chromatographic, in one timing of Operations Analyst condition, the resistance of entire air flow system is constant,
Therefore the gas chromatograph inlet pressure of pillar can be made to stablize with a pressure maintaining valve, to keep flow speed stability.In gas phase color
In the quantitative of spectrometry, qualitative progress, airflow stability is particularly important, especially in trace analysis.
Electron pressure/flow control technique is said from control angle, is exactly to use closed loop feedback control technology, to pressure, pressure
Difference, flow signal carry out comprehensive analysis and control, and form an easily operated Prefabricated block used.Module is by carrying temperature
Degree, pressure compensated proportioning valve, switch valve and pressure or flow sensor are constituted, and are arranged by the PID in control circuit and are joined
Number is adjusted, and is eliminated the deviation caused by environment temperature, analysis system temperature, mechanical wear of column system resistance, valve member etc., is made load
Gas has highly stable flow velocity in the gas circuit of each chromatographic system, and to ensure in the analysis process, baseline stability, detector are rung
Should it is accurate, the opening and closing of valve is accurate；Complete the integrated control functions to carrier gas flux control, split sampling control.
Current this module mechanically develops into electronic type from pervious, by accurate pressure, flow control component
It instead of regulatory functions such as past hand reducing pressure valve, needle-valves, but also will appear raising temperature characterisitic, reduce because temperature change is drawn
The problem of precision of voltage regulation risen reduces.
Invention content
The technical problem to be solved in the present invention is to provide a kind of output pressure precise constant, improves instrument overall performance, is
Instrument gas circuit provides the gas pressure regulating valve with temperature compensation function of non-pulse flow.
The technical scheme is that：
A kind of gas pressure regulating valve with temperature compensation function, including regulation valve body and the regulating valve that is connect with regulation valve body
Seat, the regulation valve body is interior to be equipped with bellows with regulating valve seat junction, and one end is set in the bellows and is equipped with retainer, described
The side that retainer is not connect with bellows is equipped with adjustment spring, and the adjustment spring connects jacking block, and the jacking block is single by driving
First command displacement controls adjustment spring, and the bellows other end is equipped with valve, and guide rod, the guide rod are equipped in the valve
Connect with retainer across valve and one end, other end connection flap, be respectively equipped in the regulating valve seat and regulation valve body into
Oral cavity and outlet plenum, the entrance cavity and outlet plenum are separately positioned on the both sides of valve, and the entrance cavity connects gas access, institute
Outlet plenum connection gas vent is stated, the inlet end of the entrance cavity, which is equipped with, passes through spring controlled compression plug screw, the regulating valve
Pressure sensor, pressure sensor input and outlet plenum airtight connection are additionally provided on body, and special to device by sensor line
With controller real-time Transmission gas pressure parameter.
Further, the driving unit includes step-servo motor, and the step-servo motor is connected by motor connection line
Power supply, step-servo motor output shaft are connect with adjusting screw rod feather key, and adjusting screw rod connects jacking block, and the step-servo motor is defeated
Shaft drives jacking block axial displacement.
Further, it is equipped with heating element and temperature-sensing element in the regulation valve body and is connected respectively by power line and temperature-sensitive
Line is connected trip temperature control of going forward side by side with controller.
The invention has the advantages that having temperature compensation function, temperature characterisitic is significantly provided, is reduced because of temperature
The precision of voltage regulation caused by variation reduces, and improves qualitative repeatablity.Structure and control are simple and reliable, and manufacture is low with production cost
It is honest and clean, it is easy to accomplish to automatically control, and novelty simple in structure, significantly reduce production cost.
Description of the drawings
Fig. 1 is that the main section view of structure of the invention is intended to；
Fig. 2 is present invention heating and automatically controlled schematic diagram.
In figure：
Regulating valve seat 1 compresses plug screw 2, flap 3, heating element 5, temperature-sensing element 4, valve 6, guide rod 7, retainer 8, bellows
9, adjustment spring 10, jacking block 11, adjusting screw rod 12, step-servo motor 13, motor connection line 14, regulation valve body 15, power line 16,
Temperature-sensitive line 17, pressure sensor 18, sensor line 19, entrance cavity 20, outlet plenum 21,.
Specific implementation mode
Invention is further explained with specific implementation mode for explanation below in conjunction with the accompanying drawings.
A kind of gas pressure regulating valve with temperature compensation function, including regulation valve body 15 and connect with regulation valve body
Regulating valve seat 1, the regulation valve body is interior to be equipped with bellows 9 with 1 junction of regulating valve seat, sets in one end and sets in the bellows 9
There are retainer 8, the side that the retainer 8 is not connect with bellows 9 to be equipped with adjustment spring 10, the connection of the adjustment spring 10 top
Block 11, the jacking block 11 control adjustment spring 10 by driving unit command displacement, and 9 other end of the bellows is equipped with valve 6,
Guide rod 7 is equipped in the valve 6, the guide rod 7 passes through valve 6 and one end is connect with retainer 8, and the other end connects flap 3, institute
It states and is respectively equipped with entrance cavity 20 and outlet plenum 21 in regulating valve seat 1 and regulation valve body, the entrance cavity and outlet plenum are respectively set
In the both sides of valve 6, the entrance cavity connects gas access, and the outlet plenum connects gas vent, the entrance cavity 20 into
Gas end, which is equipped with, passes through spring controlled compression plug screw 2, and pressure sensor 18, pressure sensor 18 are additionally provided on the regulation valve body
Entrance and outlet plenum airtight connection, and by sensor line 19 to device nonshared control unit real-time Transmission gas pressure parameter.
Further, the driving unit includes step-servo motor 13, and the step-servo motor is by motor connection line 14
Power supply is connected, 13 output shaft of step-servo motor is connect with 12 feather key of adjusting screw rod, and adjusting screw rod 12 connects jacking block 11, the step
11 axial displacement of jacking block is driven into 13 output shaft of servo motor.
Further, heating element 5 and temperature-sensing element 4 are equipped in the regulation valve body and respectively by power line 16 and sense
Warm line 17 is connected trip temperature control of going forward side by side with controller.
Adjusting screw rod 12 is adjusted by step-servo motor 13 according to setup parameter value, system inner outlet chamber and entrance cavity is made to reach
To balance.If using when inlet pressure have increased slightly, in entrance cavity air pressure increase therewith, bellows is upheld to the right, then is driven
Seat 8 drives guide rods 7 to be moved to the direction of entrance cavity, and flap 3 and 6 gap of valve is made to increase, and gas-flow resistance at this time increases, then into
The gas flow of inlet/outlet chamber reduces, then outlet pressure is automatically adjusted back equilibrium state.Conversely, if inlet pressure slightly drops
Low, retainer 8 drives guide rod 7 to be moved to the direction of outlet plenum, and gap between flap 3 and valve 6 is made to reduce, and gas-flow resistance reduces,
Outlet pressure is automatically adjusted back equilibrium state, realization device system outlet pressure stability.
The above is only the preferred embodiment of this patent, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the art of this patent principle, several improvement and replacement can also be made, these improve and replace
Also it should be regarded as the protection domain of this patent.
Claims (3)
1. a kind of gas pressure regulating valve with temperature compensation function, including regulation valve body and the adjusting that is connect with regulation valve body
Valve seat, the regulation valve body is interior to be equipped with bellows with regulating valve seat junction, is set in the bellows and is equipped with retainer in one end,
The side that the retainer is not connect with bellows is equipped with adjustment spring, and one end that the adjustment spring is not connect with retainer is set
There are jacking block, the jacking block to be controlled adjustment spring by driving unit command displacement, the bellows other end is equipped with valve, institute
It states and is equipped with guide rod in valve, the guide rod passes through valve and one end is connect with retainer, and the other end connects flap, the regulating valve
It is respectively equipped with entrance cavity and outlet plenum in seat and regulation valve body, the entrance cavity and outlet plenum are separately positioned on the both sides of valve,
The entrance cavity connects gas access, and the outlet plenum connects gas vent, and the inlet end of the entrance cavity, which is equipped with, passes through spring
The compression plug screw of control is additionally provided with pressure sensor, pressure sensor input and outlet plenum airtight connection on the regulation valve body,
And by sensor line to device nonshared control unit real-time Transmission gas pressure parameter.
2. a kind of gas pressure regulating valve with temperature compensation function according to claim 1, which is characterized in that the drive
Moving cell includes step-servo motor, and the step-servo motor connects power supply, step-servo motor output shaft by motor connection line
It is connect with adjusting screw rod feather key, adjusting screw rod connects jacking block, and the step-servo motor output shaft drives jacking block axial displacement.
3. a kind of gas pressure regulating valve with temperature compensation function according to claim 1, which is characterized in that the tune
It is equipped with heating element and temperature-sensing element in section valve body and is connected respectively with controller by power line and temperature-sensitive line and carries out temperature
Degree control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810703676.5A CN108662155A (en) | 2018-07-01 | 2018-07-01 | A kind of gas pressure regulating valve with temperature compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810703676.5A CN108662155A (en) | 2018-07-01 | 2018-07-01 | A kind of gas pressure regulating valve with temperature compensation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108662155A true CN108662155A (en) | 2018-10-16 |
Family
ID=63773269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810703676.5A Pending CN108662155A (en) | 2018-07-01 | 2018-07-01 | A kind of gas pressure regulating valve with temperature compensation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108662155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557214A (en) * | 2018-12-27 | 2019-04-02 | 宜春学院 | Volatile organic matter detection device in a kind of atmosphere with adsorption function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145997A (en) * | 1998-11-17 | 2000-05-26 | Sumitomo Heavy Ind Ltd | Safety valve heating device |
| JP2006105206A (en) * | 2004-10-01 | 2006-04-20 | Smc Corp | Vacuum flow regulating valve |
| CN202432057U (en) * | 2012-01-11 | 2012-09-12 | 深圳市华江科技有限公司 | Compressed gas reduced pressure adjusting device |
| CN203963165U (en) * | 2014-07-05 | 2014-11-26 | 滕州京鲁伟业科学仪器有限公司 | A kind of automatically controlled gas constant voltage regulating device |
| JP6257717B1 (en) * | 2016-08-22 | 2018-01-10 | 新▲莱▼應材科技有限公司 | Right angle valve |
| CN208431379U (en) * | 2018-07-01 | 2019-01-25 | 滕州京鲁伟业科学仪器有限公司 | A kind of gas pressure regulating valve with temperature compensation function |
-
2018
- 2018-07-01 CN CN201810703676.5A patent/CN108662155A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145997A (en) * | 1998-11-17 | 2000-05-26 | Sumitomo Heavy Ind Ltd | Safety valve heating device |
| JP2006105206A (en) * | 2004-10-01 | 2006-04-20 | Smc Corp | Vacuum flow regulating valve |
| CN202432057U (en) * | 2012-01-11 | 2012-09-12 | 深圳市华江科技有限公司 | Compressed gas reduced pressure adjusting device |
| CN203963165U (en) * | 2014-07-05 | 2014-11-26 | 滕州京鲁伟业科学仪器有限公司 | A kind of automatically controlled gas constant voltage regulating device |
| JP6257717B1 (en) * | 2016-08-22 | 2018-01-10 | 新▲莱▼應材科技有限公司 | Right angle valve |
| CN208431379U (en) * | 2018-07-01 | 2019-01-25 | 滕州京鲁伟业科学仪器有限公司 | A kind of gas pressure regulating valve with temperature compensation function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557214A (en) * | 2018-12-27 | 2019-04-02 | 宜春学院 | Volatile organic matter detection device in a kind of atmosphere with adsorption function |
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