CN104141810A - Plunger one-way valve - Google Patents
Plunger one-way valve Download PDFInfo
- Publication number
- CN104141810A CN104141810A CN201310165846.6A CN201310165846A CN104141810A CN 104141810 A CN104141810 A CN 104141810A CN 201310165846 A CN201310165846 A CN 201310165846A CN 104141810 A CN104141810 A CN 104141810A
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- Prior art keywords
- valve rod
- valve
- bore
- central
- perforation
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
The invention relates to a plunger one-way valve. The plunger one-way valve comprises a valve body, wherein a perforation valve column is tightly inserted in the valve body from a first end of the valve body; a cylinder component comprises a cylinder barrel; one end of the cylinder barrel is integrally connected with a second end of the valve body, and the other end of the cylinder barrel is provided with a cylinder end cover; a first pressure cavity for receiving a first fluid under a first pressure by the cylinder end cover is defined in the cylinder barrel through the cylinder piston; a sliding valve column is tightly inserted in the valve body; a second pressure cavity for receiving a second fluid under a second pressure is defined by the sliding valve column and the inner end of the perforation valve column; a first structural member is arranged at the inner end of the perforation valve column; a second structural member is arranged at the free end of the sliding valve column; and the first structural member and the second structural member can be joined with each other in response to the filling of the first fluid into the first pressure cavity so as to cut off the communication between the perforation valve column and the valve body, and can be separated from each other in response to the filling of the second fluid into the second pressure cavity so as to recover the communication between the perforation valve column and the valve body.
Description
Technical field
The present invention relates to a kind of one-way valve, particularly about a kind of various pressure reaction stills plunger one-way valve of (comprising ultrahigh pressure reactor) that is applicable to, be applicable to its inner fluid product to carry out the various experimentations of the Accurate Determining of component analysis and amount, and the pressure of the unidirectional discharge of fluid is controlled or safety control.
Background technique
As everyone knows, one-way valve (or safety valve) is the most frequently used a kind of pressure control valve in hydrodynamic pressure field, existing various in style, but the common shortcoming of its structure is: the height of 1. controlling one-way fluid pressure regulates control by the elastic force of valve inner spring, restriction due to narrow limitation and spring structure and the valve inner structure of spring material self intensity, the elastic force of spring has been subject to larger restriction, therefore the cracking pressure of this one-way fluid of being controlled by elastic force also just has certain narrow limitation, the cracking pressure that is this one-way valve is on the low side, and control accuracy is low, also be difficult for regulating.2. the inner-cavity structure of existing one-way valve more complicated all, once discharge opeing suspends, the Liquid Residue in its chamber is more, is unfavorable for that Accurate Determining discharges the liquid measure of liquid.3. the more difficult cleaning of the inner chamber of existing one-way valve, affects the Correct Analysis to its exudate component between different experiments.As can be seen here, the one-way valve of this prior art (or safety valve) is not suitable for various pressure reaction still requirements to its fluid reaction product Accurate Determining and quantitatively discharge of high-pressure liquid.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide that a kind of body cavity is simple in structure, Liquid Residue is few, without spring, control, and the plunger one-way valve of easy cleaning, to meet the accurate quantitative analysis of convection cell reaction product and the accurate control of convection cell reaction pressure in the various experimentations of autoclave.
For achieving the above object, the present invention takes following technological scheme: a kind of plunger one-way valve, comprises; The valve body with central through bore, wherein the perforation valve rod with central through bore is inserted in the central through bore of described valve body from the first end sealed type of described valve body; Cylinder assembly, comprise one end to be connected with the second end integrated type of described valve body and the other end is provided with the cylinder barrel of cylinder end piece, in described cylinder barrel, by cylinder piston, define for accept the first pressure chamber of the first fluid under the first pressure through described cylinder end piece; The slip valve rod contacting with described cylinder piston, its sealed type extend in the central through bore of described valve body, and jointly define for accepting the second pressure chamber of the second fluid under the second pressure with the inner end of described perforation valve rod, the second pressure is realized higher or lower than the first pressure by adjusting; Wherein, the inner end of described perforation valve rod is provided with the first structural member, the free end of described slip valve rod is provided with the second structural member, described the first structural member and the second structural member can be filled in the first pressure chamber and be bonded with each other in response to first fluid, thereby cut off being communicated with between the central through bore of described perforation valve rod and the central through bore of described valve body, and can be filled in the second pressure chamber and be separated from each other in response to second fluid, thereby recover being communicated with between the central through bore of described perforation valve rod and the central through bore of described valve body.
Described the first structural member is the elastomer seal being embedded in the inner end of described perforation valve rod, and described elastomer seal is provided with the penetrating via being communicated with the central through bore of described perforation valve rod.
Described the second structural member is Tapered Cup, and it is formed and be sealedly engaged with the penetrating via of described elastomer seal by the conical surface.
Also comprise adjusting nut, described adjusting nut can with the engage threads at the first end place of described valve body, thereby described perforation valve rod is fixed on described valve body.
The exterior edge face of described adjusting nut is provided with back-up ring, and described back-up ring is embedded in the groove in the periphery that is arranged on described perforation valve rod.
The diameter that described perforation valve rod inserts the diameter of columnar part in the central through bore of described valve body and the central through bore of described valve body is identical, and described in this, the periphery of columnar part is provided with groove, in described groove, is provided with seal ring.
Described perforation valve rod comprises first paragraph perforation valve rod, boss and the second segment perforation valve rod being wholely set, the diameter of described boss is greater than the diameter of described first paragraph perforation valve rod and the diameter of second segment perforation valve rod, and described second segment perforation valve rod is the columnar part in the central through bore of the described valve body of insertion.
The diameter that described slip valve rod inserts the diameter of columnar part in the central through bore of described valve body and the central through bore of described valve body is identical, and described in this, the periphery of columnar part is provided with groove, in described groove, is provided with seal ring.
Described slip valve rod comprises first paragraph slip valve rod and the second segment slip valve rod being wholely set, the diameter of described first paragraph slip valve rod is less than the diameter of described second segment slip valve rod, and described first paragraph slip valve rod is for inserting the columnar part in described valve body central through bore.
Described first fluid is gas, and described second fluid is liquid.
The present invention is owing to taking above technological scheme, and it has following beneficial effect: 1, plunger one-way valve provided by the invention, and its inner-cavity structure is simple, resid vol is little, easy to clean; Without spring, control, utilize low-pressure gas to realize the uniaxial pressure of high-pressure liquid is controlled, the Safety output that can meet all kinds of reactor inner high voltage fluids is controlled; And the unidirectional discharge pressure of controlling fluid by gas pressure and piston is more more accurate than controlling by the elastic force of spring, operates also more convenient.2, the internal thread of adjusting nut of the present invention and the outside thread of valve body are combined, and adjusting nut compresses the boss face of perforation valve rod, and the end thrust that slip valve rod passes to perforation valve rod of passing through being provided by cylinder can be provided; Derotation adjusting nut, by the effect of circlip for shaft, perforation valve rod can be shifted out from the central through bore of valve body, so first can be the residual fluid release in valve pocket, second after release, by outage, to inputting washing agent in valve pocket, it is cleaned, avoided discharging the cross pollution between fluid.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is carried out to detailed describing.Yet only providing in order to understand better the present invention of accompanying drawing is provided, they not should be understood to limitation of the present invention.
Fig. 1 is plunger one-way valve structures schematic diagram provided by the invention;
Fig. 2 is tapping valve columniation structure schematic diagram provided by the invention;
Fig. 3 is slide-valve columniation structure schematic diagram provided by the invention.
Embodiment
Contrast accompanying drawing below, and by the description to embodiment, the present invention is described in further detail.
As shown in Figure 1, plunger one-way valve provided by the invention mainly comprises perforation valve rod 10, valve body 20, adjusting nut 30, connects end cap 40, cylinder barrel 50, cylinder end piece 60, cylinder piston 70 and slip valve rod 80.
As shown in Figure 2, perforation valve rod 10 comprises first paragraph perforation valve rod 101, boss 102 and the second segment perforation valve rod 103 being wholely set, and the diameter of boss 102 is greater than the diameter of first paragraph perforation valve rod 101 and the diameter of second segment perforation valve rod 103.Perforation valve rod 10 be axially provided with a central through bore; The end of first paragraph perforation valve rod 101 is provided with the outage 104 that diameter is greater than this central through bore, and the end of second segment perforation valve rod 103 is provided with the stomidium that diameter is greater than this central through bore.The outer wall of second segment perforation valve rod 103 is arranged at intervals with two circle grooves 105.
As shown in Figure 1, valve body 20 comprises first paragraph valve body 201, second segment valve body 202 and the 3rd section of valve body 203 being wholely set, and the diameter of second segment valve body 202 is greater than the diameter of first paragraph valve body 201 and the diameter of the 3rd section of valve body 203.Valve body 20 be axially provided with a central through bore; On second segment valve body 202, be provided with the inlet opening 204 that is communicated with this central through bore.
As shown in Figure 1, second segment perforation valve rod 103 passes the central through bore of first paragraph valve body 201, and is positioned at the central through bore of second segment valve body 202; In two grooves 105 of second segment perforation valve rod 103 outer wall settings, be provided with an O RunddichtringO 106; In the stomidium of second segment perforation valve rod 103 ends, be provided with soft metal sealing column piece 107, the central through bore of the central through bore of soft metal sealing column piece 107 and perforation valve rod 10 is on same axis.First paragraph perforation valve rod 101 is through the central through bore of adjusting nut 30, and the internal thread of adjusting nut 30 is connected with the outside thread arranging on first paragraph valve body 201, and the interior edge face of adjusting nut 30 compresses the boss face of perforation valve rod 10; On the outer wall of first paragraph perforation valve rod 101, the position that is positioned at adjusting nut 30 exterior edge faces is provided with a circle groove, is provided with circlip for shaft 108 in groove.
As shown in Figure 1, the outside thread arranging on the 3rd section of valve body 203 is connected and fixed with the internal thread that is connected end cap 40; Connecting the outside thread and cylinder barrel 50 internal thread that wherein one end arranges that on end cap 40, arrange is connected and fixed; The internal thread of the other end setting of cylinder barrel 50 and the outside thread of cylinder end piece 60 are connected and fixed.In the outer peripheral sidewall of cylinder end piece 60, be provided with a circle groove, in groove, be provided with O RunddichtringO 601, cylinder end piece 60 is positioned on the end face of cylinder barrel 50 and is arranged at intervals with two grooves 602, is provided with the enter/air outlet hole of cylinder 603 of connection cylinder barrel 50 inside on cylinder end piece 60; Cylinder piston 70 is placed in cylinder barrel 50, is provided with a circle groove in the outer peripheral sidewall of cylinder piston 70, is provided with O RunddichtringO 701 in groove; On the end face of cylinder piston 70 near connection end cap 40, be provided with a central blind hole 702.
As shown in Figure 3, slip valve rod 80 comprises first paragraph slip valve rod 801 and the second segment slip valve rod 802 being wholely set, the diameter of first paragraph slip valve rod 801 is less than the diameter of second segment slip valve rod 802, the end of first paragraph slip valve rod 801 is provided with the taper 803 of protrusion, first paragraph slip valve rod 801 be circumferentially arranged at intervals with two circle grooves 804.
As shown in Figure 1, first paragraph slip valve rod 801 is through the central through bore of the 3rd section of valve body 203, and be positioned at the central through bore of second segment valve body 202, the conical surface of taper 803 and the central through bore end contact of soft metal sealing column piece 107 that first paragraph slip valve rod 801 ends arrange, inlet opening 204 is arranged on the second segment valve body 202 at this contact position place; In two grooves 804 that first paragraph slip valve rod 801 circumferentially arranges, be respectively arranged with an O RunddichtringO 805.The end of second segment slip valve rod 802 contacts with the central blind hole 702 arranging on cylinder piston 70.
The second segment perforation external diameter of valve rod 103 and the external diameter of first paragraph slip valve rod 801 are all identical with the diameter of the central through bore of valve body 10.
Enter/air outlet hole of the cylinder of cylinder end piece 60 603 connects air cylinder air source; The inlet opening 204 of valve body 20 connects high-pressure liquid device; The outage 104 of perforation valve rod 10 connects fluid catching device.
During use, first the low voltage control gas (N2 or air) to the required pressure of the interior input of cylinder barrel 50 by cylinder enter/air outlet hole 603, now low pressure gas acts on cylinder piston 70 in cylinder barrel 50, due to the end face diameter (being the internal diameter of cylinder barrel 50) of cylinder piston 70 end face diameter (being the central through bore internal diameter of valve body 10) much larger than the first paragraph slip valve rod 801 of slip valve rod 80, when the low-pressure gas in entering cylinder barrel 50 acts on the larger cylinder piston 70 of end area, cylinder piston 70 just produces very large end thrust, directly act on the slip valve rod 80 contacting with cylinder piston 70 exterior edge face central blind holes 702, promote slip valve rod 80 moves to the direction of perforation valve rod 10 in the central through bore of valve body 20, taper 803 conical surfaces that valve rod 80 ends arrange that make to slide closely embed in the central through bore of the soft metal sealing column piece 107 arranging in perforation valve rod 10 stomidiums, now this plunger one-way valve is in closed condition.
High-pressure liquid is in inlet opening 204 enters the spatia between soft metal sealing column piece 107 and the taper 803 of slip valve rod 80 ends settings, when high-pressure liquid acts on the end thrust producing on the annular end face of slip valve rod 80 tapers 803 and is greater than the thrust of cylinder piston 70, slip valve rod 80 moves to cylinder end piece 60 directions together with cylinder piston 70, in the central through bore of taper 803 conical surfaces of slip valve rod 80 ends soft metal sealing column piece 107 from perforation valve rod 10 stomidiums, depart from, this plunger one-way valve opens now, high-pressure liquid just flows into the central through bore of soft metal sealing column piece 107 and the central through bore of perforation valve rod 10, finally by outage 104, discharge.
Otherwise, reduction along with high pressure fluid, when the end thrust that acts on the taper 803 of slip valve rod 80 is less than the deboost of cylinder piston 70, under the effect of cylinder piston 70 low pressure gas in cylinder, promotion slip valve rod 80 directions to perforation valve rod 10 move, taper 803 conical surfaces that slip valve rod 80 ends arrange closely embed in the central through bore of the soft metal sealing column piece 107 arranging in perforation valve rod 10 stomidiums again, and this plunger one-way valve is again in closed condition.
If the exhaust chamber of this valve needs to clean, derotation adjusting nut 30, and adjusting nut 30, by the position-limiting action of circlip for shaft 108, can be extracted perforation valve rod 10 out from the central through bore of valve body 20.In the process of extracting out at perforation valve rod 10, slip valve rod 80 also axially moves to equidirectional under the effect of cylinder piston 70.But because second segment slip valve rod 802 diameters of slip valve rod 80 are greater than the diameter of valve body 20 central through bores, the gap that slip valve rod 80 is only 2～3mm is moved and is stopped by the end face of valve body 20 central through bores, so this valve is in opening state, by outage 204, can in this valve pocket, input solvent or other washing agents, to its cleaning, in addition, only need to regulate the gas pressure that enters cylinder, can control the safe handling pressure of high-pressure liquid.
Plunger one-way valve provided by the invention can utilize low-pressure gas to realize the uniaxial pressure of high-pressure liquid is controlled, and its principle is as follows.
The diameter of hypothetical cylinder piston is D
livecm(is cylinder barrel internal diameter), the pressure that enters low pressure gas in cylinder barrel is P
gasmPa, the diameter of slip valve rod in valve body central through bore is d
postcm(is the diameter of the central through bore of valve body), the pressure of high-pressure liquid is P
liquidmPa, in the gentle cylinder piston of valve rod of not considering to slide is moving axially process, embed its groove in the effect of O RunddichtringO to bore area friction, the end thrust that cylinder piston produces is:
The axial reaction thrust that slip valve rod produces is:
Work as F
live=Q
posttime, have:
D
live 2p
gas=d
post 2p
liquid,
Due to slide-valve column diameter d
postthe selection of size, main considers and the endoporus of slip valve rod corresponding matching could process and the slide material property of valve rod, therefore to slide-valve column diameter d
postselection relatively little, and to cylinder piston D
liveselection relatively large, its result
ratio just larger, therefore the plunger one-way valve of this structure, utilizes the effect of low-pressure gas to cylinder piston, can control the uniaxial pressure of high-pressure liquid.
In addition, because the compressibility coefficient of gas is more much bigger than the compressibility coefficient of liquid, so select low-pressure gas more reasonable to the control of piston to liquid to the control ratio of piston.
Above specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; institute is understood that; these are only specific embodiments of the invention; be not limited to the present invention, within the spirit and principles in the present invention all, any modification of making; protection scope of the present invention is equal to replacement, improvement etc., within all should be included in.
Claims (10)
1. a plunger one-way valve, comprises;
The valve body with central through bore, wherein the perforation valve rod with central through bore is inserted in the central through bore of described valve body from the first end sealed type of described valve body;
Cylinder assembly, comprise one end to be connected with the second end integrated type of described valve body and the other end is provided with the cylinder barrel of cylinder end piece, in described cylinder barrel, by cylinder piston, define for accept the first pressure chamber of the first fluid under the first pressure through described cylinder end piece;
The slip valve rod contacting with described cylinder piston, its sealed type extend in the central through bore of described valve body, and jointly defines for accepting the second pressure chamber of the second fluid under the second pressure with the inner end of described perforation valve rod,
Wherein, the inner end of described perforation valve rod is provided with the first structural member, the free end of described slip valve rod is provided with the second structural member, described the first structural member and the second structural member can be filled in the first pressure chamber and be bonded with each other in response to first fluid, thereby cut off being communicated with between the central through bore of described perforation valve rod and the central through bore of described valve body, and can be filled in the second pressure chamber and be separated from each other in response to second fluid, thereby recover being communicated with between the central through bore of described perforation valve rod and the central through bore of described valve body.
2. plunger one-way valve according to claim 1, is characterized in that: described the first structural member is the elastomer seal being embedded in the inner end of described perforation valve rod, and described elastomer seal is provided with the penetrating via being communicated with the central through bore of described perforation valve rod.
3. plunger one-way valve according to claim 2, is characterized in that: described the second structural member is Tapered Cup, and it is formed and be sealedly engaged with the penetrating via of described elastomer seal by the conical surface.
4. according to the plunger one-way valve described in any one in claim 1 to 3, it is characterized in that: also comprise adjusting nut, described adjusting nut can with the engage threads at the first end place of described valve body, thereby described perforation valve rod is fixed on described valve body.
5. plunger one-way valve as claimed in claim 4, is characterized in that: the exterior edge face of described adjusting nut is provided with back-up ring, and described back-up ring is embedded in the groove in the periphery that is arranged on described perforation valve rod.
6. the plunger one-way valve as described in claim 1～5 any one, it is characterized in that: the diameter that described perforation valve rod inserts the diameter of columnar part in the central through bore of described valve body and the central through bore of described valve body is identical, and periphery of columnar part is provided with groove described in this, in described groove, be provided with seal ring.
7. plunger one-way valve as claimed in claim 6, it is characterized in that: described perforation valve rod comprises first paragraph perforation valve rod, boss and the second segment perforation valve rod being wholely set, the diameter of described boss is greater than the diameter of described first paragraph perforation valve rod and the diameter of second segment perforation valve rod, and described second segment perforation valve rod is the columnar part in the central through bore of the described valve body of insertion.
8. the plunger one-way valve as described in claim 1～7 any one, it is characterized in that: the diameter that described slip valve rod inserts the diameter of columnar part in the central through bore of described valve body and the central through bore of described valve body is identical, and periphery of columnar part is provided with groove described in this, in described groove, be provided with seal ring.
9. plunger one-way valve as claimed in claim 8, it is characterized in that: described slip valve rod comprises first paragraph slip valve rod and the second segment slip valve rod being wholely set, the diameter of described first paragraph slip valve rod is less than the diameter of described second segment slip valve rod, and described first paragraph slip valve rod is for inserting the columnar part in described valve body central through bore.
10. the plunger one-way valve as described in any one in claim 1～9, is characterized in that: described first fluid is gas, and described second fluid is liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310165846.6A CN104141810B (en) | 2013-05-08 | 2013-05-08 | A kind of plunger check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310165846.6A CN104141810B (en) | 2013-05-08 | 2013-05-08 | A kind of plunger check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141810A true CN104141810A (en) | 2014-11-12 |
| CN104141810B CN104141810B (en) | 2016-05-18 |
Family
ID=51851081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310165846.6A Active CN104141810B (en) | 2013-05-08 | 2013-05-08 | A kind of plunger check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104141810B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439143A (en) * | 2016-11-16 | 2017-02-22 | 江南工业集团有限公司 | Pneumatically controlled pressure relief valve and pressure relief method |
| CN109613213A (en) * | 2019-01-14 | 2019-04-12 | 中南大学 | It is a kind of multi-functional at hydrocarbon diagenesis high temperature and pressure imitative experimental appliance and its application method |
| CN110878777A (en) * | 2019-11-28 | 2020-03-13 | 宁波文泽机电技术开发有限公司 | Pressure control valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0626520A1 (en) * | 1993-04-28 | 1994-11-30 | Raymond Keith Foster | Internal check valve |
| CN1684846A (en) * | 2002-10-01 | 2005-10-19 | 罗纳德·斯潘塞·桑普森 | Air flow control apparatus |
| RU2413893C1 (en) * | 2009-12-14 | 2011-03-10 | Валерий Владимирович Бодров | Controlled back valve |
| CN102762903A (en) * | 2010-01-21 | 2012-10-31 | Smc株式会社 | Flow control device |
-
2013
- 2013-05-08 CN CN201310165846.6A patent/CN104141810B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0626520A1 (en) * | 1993-04-28 | 1994-11-30 | Raymond Keith Foster | Internal check valve |
| CN1684846A (en) * | 2002-10-01 | 2005-10-19 | 罗纳德·斯潘塞·桑普森 | Air flow control apparatus |
| RU2413893C1 (en) * | 2009-12-14 | 2011-03-10 | Валерий Владимирович Бодров | Controlled back valve |
| CN102762903A (en) * | 2010-01-21 | 2012-10-31 | Smc株式会社 | Flow control device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439143A (en) * | 2016-11-16 | 2017-02-22 | 江南工业集团有限公司 | Pneumatically controlled pressure relief valve and pressure relief method |
| CN109613213A (en) * | 2019-01-14 | 2019-04-12 | 中南大学 | It is a kind of multi-functional at hydrocarbon diagenesis high temperature and pressure imitative experimental appliance and its application method |
| CN109613213B (en) * | 2019-01-14 | 2021-04-06 | 中南大学 | Multifunctional hydrocarbon-formation diagenetic high-temperature high-pressure simulation experiment device and use method thereof |
| CN110878777A (en) * | 2019-11-28 | 2020-03-13 | 宁波文泽机电技术开发有限公司 | Pressure control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104141810B (en) | 2016-05-18 |
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