CN204403491U - Operated micropressure adjusting valve - Google Patents
Operated micropressure adjusting valve Download PDFInfo
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- CN204403491U CN204403491U CN201420801234.1U CN201420801234U CN204403491U CN 204403491 U CN204403491 U CN 204403491U CN 201420801234 U CN201420801234 U CN 201420801234U CN 204403491 U CN204403491 U CN 204403491U
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Abstract
The utility model provides a kind of operated micropressure adjusting valve relating to modulating valve technical field, comprising: the first film head, and is in the second film head above the first film head; Membrane cover on first time membrane cover and second is connected in series by hollow guide pin bushing; Coupling shaft is through hollow guide pin bushing, described coupling shaft to penetrate on first on film chamber and second in film chamber respectively, the top and bottom of coupling shaft are respectively equipped with the first radial pore and the second radial pore, also be provided with gas channel vertically in coupling shaft, gas channel is communicated with film chamber on film chamber and second on first with two axle portion inlet holes respectively by the first radial pore; On first, membrane cover is provided with feedback port; Coupling shaft is connected with spool by valve rod; The valve rear end of valve body is communicated with feedback port by feedback pipe; Setting device is arranged at the top of the first film head, and is connected with coupling shaft.The horizontal space that film head of the present utility model takies is little, good stability, precision are high, can realize the Auto-control of Micro-pressure of the direct-operated regulator to larger caliber.
Description
Technical field
The utility model relates to modulating valve technical field, particularly relates to a kind of operated micropressure adjusting valve.
Background technique
Direct-operated regulator does not a kind ofly need additional driving source and by being adjusted the pressure of medium self to be changed to power, automatically by the valve of setting value requirement realization to the automatic adjustment of pressure, flow, temperature.This valve is the energy-conserving product integrating detection, feedback, execution various functions.Operated micropressure adjusting valve in direct-operated regulator, is generally used for the Auto-control of Micro-pressure of the various industrial gas such as storage tank nitrogen envelope, coal gas, rock gas, liquid gas, oxygen, nitrogen.Operated micropressure adjusting valve is mainly used in various industrial furnace combustion system, and control the proportions of ingredients of two kinds of gases, the flowrate proportioning of such as coal gas and air, to reach ideal burning.Operated micropressure adjusting valve also can be used for other Auto-control of Micro-pressure occasion.The common at present inside nominal diameter of operated micropressure adjusting valve is all DN≤100mm, be DN >=more than 125mm's for inside nominal diameter, because spool weighs greatly again, system resistance is large, must adopt high thrust actuator, the transmission of such as feedback force adopts lever amplification, the complex structure of lever amplification, precision is low, is difficult to reach good effect.
How to design a kind of structure simple, easy to use, the operated micropressure adjusting valve that precision is high is the problem that those skilled in the art need to solve.
Model utility content
The shortcoming of prior art in view of the above, it is simple, easy to use that the technical problem that the utility model solves is to provide a kind of structure, and the operated micropressure adjusting valve that precision is high.
For achieving the above object and other relevant objects, the utility model provides a kind of operated micropressure adjusting valve, comprising: the first film head, the second film head, and described first film head is in the top of described second film head; Described first film head comprises membrane cover on first, first time membrane cover, primary diaphragm and the first pallet, on described first, membrane cover is connected with described first time membrane cover, on described first, membrane cover and described first time membrane cover surround the first film room, described first pallet is arranged at described first film chamber interior, described first pallet covers described primary diaphragm, on the edge of described primary diaphragm and described first, membrane cover and described first time membrane cover are tightly connected, and described first film room is divided into film chamber and the first bottom film chamber on first by described primary diaphragm; Described second film head comprises membrane cover on second, second time membrane cover, secondary diaphragm and the second pallet, on described second, membrane cover is connected with described second time membrane cover, on described second, membrane cover and described second time membrane cover surround the second film room, described second pallet is arranged at described second film chamber interior, described second pallet covers described secondary diaphragm, on the edge of described secondary diaphragm and described second, membrane cover and described second time membrane cover are tightly connected, and described second film room is divided into film chamber and the second bottom film chamber on second by described secondary diaphragm; Hollow guide pin bushing, is connected in series membrane cover on described first time membrane cover and described second; Coupling shaft, through described hollow guide pin bushing, the top and bottom of described coupling shaft to penetrate on described first on film chamber and described second in film chamber respectively, the top and bottom of described coupling shaft are respectively equipped with the first radial pore and the second radial pore, also gas channel is provided with vertically in described coupling shaft, described gas channel is communicated with film chamber on film chamber on described first and described second with described second radial pore respectively by described first radial pore, and described coupling shaft is connected with described first pallet and described second pallet; On described first, membrane cover is provided with feedback port, and described feedback port is communicated with film chamber on described first; Valve rod, described coupling shaft is connected with spool by described valve rod; Valve body, described valve body is connected with described second time membrane cover by bonnet, and the valve rear end of described valve body is communicated with described feedback port by feedback pipe; Setting device, is arranged at the top of described first film head, and is connected with described coupling shaft.
Preferably, described setting device comprises connecting rod, setting spring part, adjusting nut and guide cover, the connection of described connecting rod and described coupling shaft, described connecting rod is in the top of described coupling shaft, described connecting rod is provided with outside thread, described in described adjusting nut, described setting spring part, guide cover is set on described connecting rod successively from top to bottom successively, and described guide cover is fixedly connected with film chamber on described first, and described connecting rod is threaded with described adjusting nut.
Further, described operated micropressure adjusting valve also comprises and also comprises cover, and described cover covers on described setting device, and the bottom surface of described cover contacts with the end face of membrane cover on described first.
Further, described operated micropressure adjusting valve also comprises locking nut, and described locking nut is enclosed within described connecting rod, and is threaded with described connecting rod, and described setting spring part is provided with spring seat, and described locking nut is on described spring seat.
Preferably, the valve seat corresponding with described spool is provided with between the valve front end of described valve body and the valve rear end of described valve body.
Preferably, on described first, membrane cover is respectively equipped with the first pore and the second pore to membrane cover and described second, plug blocks described first pore and described second pore.
As mentioned above, operated micropressure adjusting valve described in the utility model, has following beneficial effect:
The utility model can be used in the valve rear end Auto-control of Micro-pressure of valve body, and during use, medium is entered by the front end of valve body, after spool, the throttling of valve seat place, flows to the rear end of valve body.The downstream pressure of valve body to enter on first in film chamber by feedback pipe and feedback port, to enter on second in film chamber by the first radial pore, gas channel and the second radial pore successively again, after valve, feedback pressure is exaggerated behind film chamber entering on first on film chamber and second, produce downward pressure, the force value that downward force value provides with the setting spring part set up compares.Due to upstream pressure fluctuation and the change of valve post consumption amount, after after making valve, feedback pressure film chamber and second is exaggerated behind film chamber on first, the downward pressure produced also fluctuates thereupon, when the force value that downward force value provides lower than setting spring part, the downward pressure that primary diaphragm and secondary diaphragm produce setting spring part is less, the aperture of valve body is larger, the amount that medium flows into the valve rear end of valve body is larger, after making valve, feedback pressure gos up rapidly, until reach the force value that setting spring part provides, valve body is to corresponding aperture.After feedback pressure after valve film chamber and second is exaggerated behind film chamber on first, when the downward force value produced is equal to or higher than the force value that setting spring part provides, first film head and the second film head make valve body be tending towards closing, the amount of valve rear end that medium flows into valve body is less, until be down to the force value that setting spring part provides.In control procedure, this fluctuation exists all the time, select the spool of bore accurately, spool done to equilibrium of forces design, Exact Design setting spring part, make the useful area of diaphragm can reduce fluctuating range enough greatly, improve speed of response, also namely improve sensitivity and precision.
The utility model adopts two film heads both to effectively increase effective diaphragm area, turn reduces the horizontal space at the use scene shared by film head, can meet larger caliber minute-pressure, ultra micro pressure self-powering type valve after control overflow;
The utility model structure is simple, and feedback sensitivity is high, can realize the Auto-control of Micro-pressure of the direct-operated regulator to larger caliber, the i.e. Auto-control of Micro-pressure of more than DN >=125 direct-operated regulator, also can be used for ultra micro pressure-controlled, volume is little, debugging, easy to use, precision is high.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of operated micropressure adjusting valve of the present utility model.
Drawing reference numeral explanation
100 first film heads
Membrane cover on 110 first
111 feedback port
112 first pores
120 first times membrane covers
130 primary diaphragms
140 first pallets
Film chamber on 160 first
170 first bottom film chambers
200 second film heads
Membrane cover on 210 second
211 second pores
220 second times membrane covers
230 secondary diaphragms
240 second pallets
Film chamber on 260 second
270 second bottom film chambers
300 hollow guide pin bushings
310 Sealings
400 coupling shafts
410 first radial pores
420 second radial pores
430 gas channels
500 valve rods
600 spools
700 valve bodies
701 bonnets
702 valve seats
800 feedback pipes
900 setting devices
910 connecting rods
920 setting spring parts
921 spring seats
930 adjusting nuts
940 guide covers
950 locking nuts
10 covers
Embodiment
By particular specific embodiment, mode of execution of the present utility model is described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present utility model and effect easily.
Refer to accompanying drawing.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As shown in Figure 1, operated micropressure adjusting valve of the present utility model, comprising: the first film head 100, second film head 200, hollow guide pin bushing 300, coupling shaft 400, valve rod 500, valve body 700 and setting device 900;
First film head 100 is in the top of the second film head 200;
First film head 100 comprises membrane cover 110, first time membrane cover 120, primary diaphragm 130 and the first pallet 140 on first, on first, membrane cover 110 is connected with first time membrane cover 120, on first, membrane cover 110 and first time membrane cover 120 surround the first film room, first pallet 140 is arranged at the first film chamber interior, first pallet 140 covers primary diaphragm 130, on the edge of primary diaphragm 130 and first, membrane cover 110 and first time membrane cover 120 are tightly connected, and the first film room is divided into film chamber 160 and the first bottom film chamber 170 on first by primary diaphragm 130;
Second film head 200 comprises membrane cover 210, second time membrane cover 220, secondary diaphragm 230 and the second pallet 240 on second, on second, membrane cover 210 is connected with second time membrane cover 220, on second, membrane cover 210 and second time membrane cover 220 surround the second film room, second pallet 240 is arranged at the second film chamber interior, second pallet 240 covers secondary diaphragm 230, on the edge of secondary diaphragm 230 and second, membrane cover 210 and second time membrane cover 220 are tightly connected, and the second film room is divided into film chamber 260 and the second bottom film chamber 270 on second by secondary diaphragm 230;
Hollow guide pin bushing 300, is connected in series membrane cover 210 on first time membrane cover 120 and second;
Coupling shaft 400, be in hollow guide pin bushing 300, through hollow guide pin bushing 300, Sealing 310 is provided with between coupling shaft 400 and hollow guide pin bushing 300, the top and bottom of coupling shaft 400 to penetrate on first on film chamber 160 and second in film chamber 260 respectively, the top and bottom of coupling shaft 400 are respectively equipped with the first radial pore 410 and the second radial pore 420, also gas channel 430 is provided with vertically in coupling shaft 400, gas channel 430 is communicated with film chamber 260 on film chamber 160 and second on first with the second radial pore 420 respectively by the first radial pore 410, coupling shaft 400 is connected with the first pallet 140 and the second pallet 240,
On first, membrane cover 110 is provided with feedback port 111, and feedback port 111 is communicated with film chamber 160 on first;
Valve rod 500, coupling shaft 400 is connected with spool 600 by valve rod 500;
Valve body 700, valve body 700 is connected with second time membrane cover 220 by bonnet 701, and the valve rear end of valve body 700 is communicated with feedback port 111 by feedback pipe 800;
Setting device 900, is arranged at the top of the first film head 100, and is connected with coupling shaft 400.
Setting device 900 comprises connecting rod 910, setting spring part 920, adjusting nut 930 and guide cover 940, the connection of connecting rod 910 and coupling shaft 400, connecting rod 910 is in the top of coupling shaft 400, connecting rod 910 is provided with outside thread, adjusting nut 930, setting spring part 920 guide cover 940 are set on connecting rod 910 successively from top to bottom successively, guide cover 940 is fixedly connected with film chamber 160 on first, and connecting rod 910 is threaded with adjusting nut 930.
The utility model can be used in the valve rear end Auto-control of Micro-pressure of valve body 700, and during use, medium is entered by the front end of valve body 700, after spool 600, valve seat 702 place's throttling, flows to the rear end of valve body 700.The downstream pressure of valve body 700 to enter on first in film chamber 160 by feedback pipe 800 and feedback port 111, to enter on second in film chamber 260 by the first radial pore 410, gas channel 430 and the second radial pore 420 successively again, after valve, feedback pressure is exaggerated behind film chamber 260 entering on first on film chamber 160 and second, produce downward pressure, the force value that downward force value provides with the setting spring part 920 set up compares.Due to upstream pressure fluctuation and the change of valve post consumption amount, after making after valve feedback pressure on first, film chamber 160 and second be exaggerated behind film chamber 260, the downward pressure produced also fluctuates thereupon, when the force value that downward force value provides lower than setting spring part 920, the downward pressure that primary diaphragm 130 and secondary diaphragm 230 pairs of setting spring parts 920 produce is less, the aperture of valve body 700 is larger, the amount that medium flows into the valve rear end of valve body 700 is larger, after making valve, feedback pressure gos up rapidly, until reach the force value that setting spring part 920 provides, valve body 700 is to corresponding aperture.After feedback pressure after valve film chamber 160 and second is exaggerated behind film chamber 260 on first, when the downward force value produced is equal to or higher than the force value that setting spring part 920 provides, first film head and the second film head make valve body 700 be tending towards closing, the amount of valve rear end that medium flows into valve body 700 is less, until be down to the force value that setting spring part 920 provides.In control procedure, this fluctuation exists all the time, select the spool 600 of bore accurately, spool 600 done to equilibrium of forces design, Exact Design setting spring part 920, make the useful area of diaphragm can both reduce fluctuating range enough greatly, improve speed of response, also namely improve sensitivity and precision.
According to requirements of type selecting, the force value that Special testing device adjusts setting spring part 920 to be provided requires setting value to valve, and setting spring part 920 parameter is given by designing.On-the-spot polyphony: when requiring setting value after the value of feedback pressure is less than valve after the valve of reality, lower adjusting nut 930, compression setting spring part 920, connecting rod 910 is made to drive coupling shaft 400 and valve rod 500 to move up, then spool 600 moves up, with this, actual spool 600 aperture is increased, after making actual valve, the value of feedback pressure raises, until require setting value after valve; When requiring setting value after the value of feedback pressure is greater than valve after the valve of reality, raise adjusting nut 930, make connecting rod 910 drive coupling shaft 400 and valve rod 500, spool 600 to move down, aperture reduces, and requires setting value after the value of feedback pressure is down to valve after making actual valve with this; Finally lock adjusting nut 930, enter autocontrol operation.
The downward force value produced in film chamber 160 on first is that after entering the valve on first in film chamber 160, feedback pressure is multiplied by the useful area in the first film head 100, the downward force value produced in film chamber 260 on second is that after entering the valve on second in film chamber 260, feedback pressure is multiplied by the useful area in the second film head 200, the size of the useful area in the useful area in the first film head 100 and the second film head 200 determines control accuracy, useful area in useful area in first film head 100 and the second film head 200 is larger, and control accuracy is larger; Adopt two film heads under the prerequisite of horizontal space effectively reducing the use scene shared by film head, the required precision of Auto-control of Micro-pressure can be met.
Operated micropressure adjusting valve also comprises locking nut 950, and locking nut 950 is enclosed within connecting rod 910, and is threaded with connecting rod 910, and setting spring part 920 is provided with spring seat 921, and locking nut 950 is on spring seat 921.After adjusting nut 930 is set up, locking nut 950 is for locking adjusting nut 930.
Operated micropressure adjusting valve also comprises and also comprises cover 10, and cover 10 covers on setting device 900, and the bottom surface of cover 10 contacts with the end face of membrane cover on first 110.Cover 10 is for the protection of the part in setting device 900.
The valve seat 702 corresponding with spool 600 is provided with between the valve front end of valve body 700 and the valve rear end of valve body 700.Spool 600 and valve seat 702 coordinate, the aperture of control valve body 700.
On first, membrane cover 210 is respectively equipped with the first pore 112 and the second pore 211 to membrane cover 110 and second, plug blocks described first pore 112 and described second pore 211.At ordinary times, plug is by the first pore 112 and the second pore 211 shutoff; When unloading lower end cap, blowdown when can be keeped in repair the first film head 100 and the second film head 200 respectively by the first pore 112 and the second pore 211.
The utility model adopts two film heads both to effectively increase effective diaphragm area, turn reduces the horizontal space at the use scene shared by film head, can meet larger caliber minute-pressure, ultra micro pressure self-powering type valve after control overflow;
The utility model structure is simple, and feedback sensitivity is high, can realize the Auto-control of Micro-pressure of the direct-operated regulator to larger caliber, the i.e. Auto-control of Micro-pressure of more than DN >=125 direct-operated regulator, also can be used for ultra micro pressure-controlled, volume is little, debugging, easy to use, precision is high.
To sum up, the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (6)
1. an operated micropressure adjusting valve, is characterized in that, comprising:
First film head (100), the second film head (200), described first film head (100) is in the top of described second film head (200);
Described first film head (100) comprises membrane cover on first (110), first time membrane cover (120), primary diaphragm (130) and the first pallet (140), on described first, membrane cover (110) is connected with described first time membrane cover (120), on described first, membrane cover (110) and described first time membrane cover (120) surround the first film room, described first pallet (140) is arranged at described first film chamber interior, described first pallet (140) is upper covers described primary diaphragm (130), on the edge of described primary diaphragm (130) and described first, membrane cover (110) and described first time membrane cover (120) are tightly connected, described first film room is divided into film chamber (160) and the first bottom film chamber (170) on first by described primary diaphragm (130),
Described second film head (200) comprises membrane cover on second (210), second time membrane cover (220), secondary diaphragm (230) and the second pallet (240), on described second, membrane cover (210) is connected with described second time membrane cover (220), on described second, membrane cover (210) and described second time membrane cover (220) surround the second film room, described second pallet (240) is arranged at described second film chamber interior, described second pallet (240) is upper covers described secondary diaphragm (230), on the edge of described secondary diaphragm (230) and described second, membrane cover (210) and described second time membrane cover (220) are tightly connected, described second film room is divided into film chamber (260) and the second bottom film chamber (270) on second by described secondary diaphragm (230),
Hollow guide pin bushing (300), is connected in series membrane cover (210) on described first time membrane cover (120) and described second;
Coupling shaft (400), through described hollow guide pin bushing (300), the top and bottom of described coupling shaft (400) to penetrate on described first on film chamber (160) and described second in film chamber (260) respectively, the top and bottom of described coupling shaft (400) are respectively equipped with the first radial pore (410) and the second radial pore (420), gas channel (430) is also provided with vertically in described coupling shaft (400), described gas channel (430) is communicated with film chamber (260) on film chamber (160) and described second on described first with described second radial pore (420) respectively by described first radial pore (410), described coupling shaft (400) is connected with described first pallet (140) and described second pallet (240),
On described first, membrane cover (110) is provided with feedback port (111), and described feedback port (111) is communicated with film chamber (160) on described first;
Valve rod (500), described coupling shaft (400) is connected with spool (600) by described valve rod (500);
Valve body (700), described valve body (700) is connected with described second time membrane cover (220) by bonnet (701), and the valve rear end of described valve body (700) is communicated with described feedback port (111) by feedback pipe (800);
Setting device (900), is arranged at the top of described first film head (100), and is connected with described coupling shaft (400).
2. operated micropressure adjusting valve according to claim 1, it is characterized in that: described setting device (900) comprises connecting rod (910), setting spring part (920), adjusting nut (930) and guide cover (940), the connection of described connecting rod (910) and described coupling shaft (400), described connecting rod (910) is in the top of described coupling shaft (400), described connecting rod (910) is provided with outside thread, described adjusting nut (930), described setting spring part (920), described guide cover (940) is set on described connecting rod (910) successively from top to bottom successively, described guide cover (940) is fixedly connected with film chamber (160) on described first, described connecting rod (910) is threaded with described adjusting nut (930).
3. operated micropressure adjusting valve according to claim 2, it is characterized in that: also comprise cover (10), described cover (10) covers on described setting device (900), and the bottom surface of described cover (10) contacts with the end face of membrane cover (110) on described first.
4. operated micropressure adjusting valve according to claim 2, it is characterized in that: also comprise locking nut (950), described locking nut (950) is enclosed within described connecting rod (910), and be threaded with described connecting rod (910), described setting spring part (920) is provided with spring seat (921), and described locking nut (950) is on described spring seat (921).
5. operated micropressure adjusting valve according to claim 1, is characterized in that: be provided with the corresponding valve seat (702) with described spool (600) between the valve front end of described valve body (700) and the valve rear end of described valve body (700).
6. operated micropressure adjusting valve according to claim 1, it is characterized in that: on described first, membrane cover (110) and described second membrane cover (210) is respectively equipped with the first pore (112) and the second pore (211), plug blocks described first pore (112) and described second pore (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801234.1U CN204403491U (en) | 2014-12-16 | 2014-12-16 | Operated micropressure adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801234.1U CN204403491U (en) | 2014-12-16 | 2014-12-16 | Operated micropressure adjusting valve |
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| Publication Number | Publication Date |
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| CN204403491U true CN204403491U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420801234.1U Active CN204403491U (en) | 2014-12-16 | 2014-12-16 | Operated micropressure adjusting valve |
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| Country | Link |
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| CN (1) | CN204403491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345285A (en) * | 2019-08-01 | 2019-10-18 | 浙江汇正自控阀门有限公司 | A kind of pilot-operated type pressure-regulating valve |
-
2014
- 2014-12-16 CN CN201420801234.1U patent/CN204403491U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345285A (en) * | 2019-08-01 | 2019-10-18 | 浙江汇正自控阀门有限公司 | A kind of pilot-operated type pressure-regulating valve |
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