CN106286912B - A kind of pressure-control valve - Google Patents
A kind of pressure-control valve Download PDFInfo
- Publication number
- CN106286912B CN106286912B CN201510241223.1A CN201510241223A CN106286912B CN 106286912 B CN106286912 B CN 106286912B CN 201510241223 A CN201510241223 A CN 201510241223A CN 106286912 B CN106286912 B CN 106286912B
- Authority
- CN
- China
- Prior art keywords
- valve
- valve chamber
- spool
- fluid
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012530 fluid Substances 0.000 claims abstract description 52
- 230000007704 transition Effects 0.000 claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000004323 axial length Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
-
- 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
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Abstract
The present invention relates to valve technology fields, disclose a kind of pressure-control valve, it includes the valve body (1) with tubular valve chamber (2), the bottom of the valve chamber (2) is axially provided with valve port (6), it further include the bottom being arranged in the valve body (1) and the fluid inlet end (3) being connected to the valve port (6), the fluid outlet (4) being connected to the inside portion of the valve chamber (2), the cylindrical spool (5) that can be slid axially in the valve chamber (2) is set, spring (7) in the valve chamber (2) by the spool (5) against the valve port (6) is set, it is characterized in that, the transitional fluid channel (22) for keeping flow path circulation area descending to outlet flow direction in axial direction is formed between the peripheral part of the spool (5) and the inner wall part of the valve chamber (2), the pressure control Valve processed realizes current stabilization by transition passage and keeps certain pressure, avoids result in the fluid in valve chamber 2 and the problems such as turbulent flow or difficult valve opening occurs, improves the reliability of valve.
Description
Technical field
The present invention relates to control valve technical fields, more particularly to a kind of pressure-control valve.
Background technique
Pressure-control valve use is generally used for the pressure difference of control input end and outlet end fluid media (medium) than wide.When
When the pressure difference of medium is less than the pressure of setting, valve port is in close state；When the pressure difference of medium is greater than the pressure of setting,
Valve port is in the conductive state.
Fig. 1 is a kind of common pressure-control valve structure diagram of the prior art.As shown in Figure 1.Pressure-control valve includes
The valve body 1 ' of whole forging and stamping or casting and forming, valve body 1 ' are internally provided with cylindric valve chamber 2 ', input end 3 ' and valve chamber 2 '
Axial bottom communicate, outlet end 4 and valve chamber 2 ' laterally communicate.Spool 5 is slidably disposed in valve chamber 2 ', 8 ' peace of capping
Mounted in valve body 1 ' top and seal valve chamber 2 '.Spring 7 ' is provided between capping 8 and spool 5 '.In the side of valve chamber 2 ', valve
There are passage gaps 9 between the outer rim of core 5 and the inner wall of valve chamber 2 '.
The pressure-control valve of the prior art, the generally size constancy of passage gaps 9, but the parameter of the passage gaps 9
It determines relatively difficult.If the size of passage gaps 9 is smaller, the fluid flow area of the stream section is smaller, when valve port opening, stream
When body medium passes through the stream section, throttle effect can be generated, causes the fluid in valve chamber 2 ' turbulent flow occur, makes an uproar to generate flowing
Sound；If the size of passage gaps 9 is larger, the fluid flow area of the stream section is larger, in the moment that valve port is opened, input end
Be applied to spool ' active force can reduce sharply, the pressure difference of spool ' two sides is not built up, cannot be by preset parameter valve opening, simultaneously
Spool ' it also will appear jiggly valve opening impact noise problem.The reliability decrease of product.
Especially for prior art construction as shown in Figure 1, input end is provided with the axial direction of valve chamber, and outlet end is provided with
Lateral, the pressure-control valve that outlet end 4 has part straight-through with passage gaps 9 of valve chamber.Because being exported when valve port is opened
End 4 with passage gaps 9 lead directly to part fluid can by 9 segment section of passage gaps just flow directly into outlet end 4, in outlet end
4, which with the fluid of the non-straight-through part of passage gaps 9 can lead to gap 9, flows to valve chamber and flows to outlet end 4 again.Pressure suffered by 5 radial direction of spool
Fluctuation is handed over greatly, and unstable, so defect is especially prominent.For the pressure control for the biggish environment of operating pressure difference
Valve, the problem are especially prominent.So how to improve design, the functional reliability and valve opening stability of pressure-control valve are provided, are
The designer of the art problem to be solved.
Summary of the invention
To solve the deficiencies in the prior art, the present invention provides a kind of pressure-control valves, the valve including having tubular valve chamber
The bottom of body, the valve chamber is axially provided with valve port, further includes that the bottom of the valve body is arranged in and is connected to the valve port
Fluid inlet end, the fluid outlet being connected to the inside portion of the valve chamber are arranged in and can slide axially in the valve chamber
Spring by the spool against the valve port, peripheral part and institute in the spool is arranged in the valve chamber in cylindrical spool
State the transitional fluid for being formed between the inner wall part of valve chamber and keeping flow path circulation area descending to fluid outlet direction in axial direction
Channel, when the valve port is opened, fluid enters the valve chamber by the transition passage.
On the basis of above-mentioned pressure-control valve, it is preferable that the flow path circulation area of the transition passage input end is defined as
The flow path area of S1, the transition passage outlet end are defined as S2, then meet relationship 35%S1 > S2 > 5%S1；
Preferably, the transition passage further includes in axial direction to the continuously gradually small transition of fluid outlet direction circulation area
Section, the changeover portion are greater than the transition passage in radial minimum widith along axial length (L)；
Preferably, the transition passage further includes in axial direction to the continuously gradually small transition of fluid outlet direction circulation area
Section, the changeover portion are greater than the transition passage between radial maximum width and minimum widith along axial length (L)
Difference；
It further, further include the constant constant restriction portion of fluid flow area towards outlet end on the transition passage；
Specifically, the valve port position is closed in the spool, the transition passage and the fluid outlet end part are straight
It is logical；
Preferably, the peripheral part of the spool has pyramidal first segment face, and the first segment face constitutes the transition
Section；
Preferably, the inner wall part of the valve chamber has pyramidal second segment face, and the second segment face constitutes the transition
Section.
The pressure-control valve that the present invention provides is logical by the way that the descending transition that is open is arranged between valve port and outlet end
Road, the fluid with certain high pressure realizes current stabilization and keeps certain pressure, avoid result in valve by transition passage after making valve opening
There is the problems such as turbulent flow or difficult valve opening in intracavitary fluid, improves the reliability of valve.In the design advanced optimized, pass through
The throttle of one section of constant area is set in transition passage and area continuously becomes smaller section, the fluid for flowing into valve chamber can be made further
Stablize to meet preset valve opening requirement.
Detailed description of the invention
A kind of Fig. 1: typical pressure-control valve structural schematic diagram in the prior art；
A kind of Fig. 2: the main view of the pressure-control valve structure for specific implementation that the present invention provides；
The side view of pressure-control valve structure in Fig. 3: Fig. 2；
The partial enlargement diagram of the spool of pressure-control valve and valve body relative engagement in Fig. 4: Fig. 2；
Fluid communication schematic diagram of the pressure-control valve after spool unlatching in Fig. 5: Fig. 2；
Fig. 5 a/ Fig. 5 b: the fluid schematic in the excessive and too small situation of the ratio between the import of changeover portion and discharge area；
Fig. 6: the pressure-control valve structural schematic diagram for another specific implementation that the present invention provides；
The partial enlargement diagram of the spool of pressure-control valve and valve body relative engagement in Fig. 7: Fig. 6.Symbol in Fig. 2-7
Illustrate:
1- valve body；
2- valve chamber；
21/21A- inner wall part, 22- transition passage；
The constant restriction portion of 221/221A- changeover portion, 222/222A-, initial segment 223；
23- stepped hole, 24- sidewise hole；
3- fluid inlet end, 4- fluid inlet end；
5- spool；
51/51A- first segment face, 52/52A- second segment face, 53/53A- third section face；
6- valve port
7- spring；
8- capping；
9- passage gaps.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 2 is a kind of main view of the pressure-control valve structure for specific implementation that the present invention provides, and Fig. 3 is pressure in Fig. 2
Control the side view of valve arrangement.
As shown in Figures 2 and 3.Pressure-control valve includes the valve body 1 of whole forging and stamping or casting and forming, is provided on valve body 1
The cylindric valve chamber 2 being axially arranged.The stepped hole 23 that diameter becomes smaller, which is processed into, in the bottom of valve chamber 2 forms input end 3, valve chamber
2 form axial sealable valve port 6 with 23 transition part of stepped hole.The formation of sidewise hole 24 is also machined in the radial side of valve chamber 2
Outlet end 4.In this embodiment, input end 3 and outlet end 4 and valve body 1 are integrally formed.It can certainly be by welding adapter tube shape
Formula setting.
8 installation of capping is by being threadably mounted at the upper end of valve body 1 and sealing valve chamber 2.Being additionally provided in valve chamber 2 can edge
Spool 5 in axial sliding, the setting of spring 7 is between capping 8 and spool 5 and abuts spool 5 to tend to seal valve port 6.
In general, the input end 3 of pressure-control valve is connected to the high-pressure side of system, the low-pressure side of outlet end 4 and system connects
It is logical, so being formed with certain pressure differential Δ F between input end 3 and outlet end 4.The abutting force F of spring 7 presses preset parameter
It is selected.So Δ F changes with the variation of system high pressure, as F > Δ F, under the abutting force F effect of spring 7, spool 5 is supported
Valve port is connect, pressure-control valve is in close state；As F < Δ F, pressure differential Δ F tends to spool 5 and leaves valve port 6, pressure control
Valve is in the open state.After the new dynamic balance of the mobile formation of spool (F=Δ F), spool stops movement.
Fig. 4 is the partial enlargement diagram of the spool of pressure-control valve and valve body cooperation in Fig. 2.
As shown in Figure 4.In the embodiment, pressure-control valve spool 5 and valve body 1 in the region of circumferentially opposed cooperation,
The inner wall part 21 of valve chamber 2 is the constant direct tube section of diameter.The substantially cylindrical structure of spool 5, is provided with cone on outer lateral circle surface
The first segment face 51 of mesa-shaped is provided with the second segment face of the constant major diameter of outer diameter in first segment face 51 to fluid outlet direction
52, fluid inlet direction is provided with the third section face 53 of the constant minor diameter of outer diameter in first segment face 51.
The first segment face 51 of spool 5 and the inner wall cooperation of valve body 1 are constituted and are circulated in axial direction to fluid outlet direction fluid
The continuous gradually small changeover portion 221 of area；The first segment face 52 of spool 5 and the inner wall cooperation of valve body 1 constitute fluid flow area not
The constant restriction portion 222 become, the third section face 53 of spool 5 and the inner wall cooperation of valve body 1 constitute the constant initial segment of circulation area
223.Restriction portion 222, changeover portion 221 and initial segment 223 constitute transition passage 22.
The flow path circulation area of the input end of transition passage 22 is defined as S1, the flow path circulation of the outlet end of transition passage 22
Area is defined as S2.Wherein the length of changeover portion 221 in axial direction is defined as L, and transition passage 22 is in radial minimum widith
It is defined as H (in the present embodiment, H is specially the distance between the inner wall of valve body 1 and the second segment face 52 of spool 5).Transition is logical
Road 22 is defined as H1 in radial maximum width.
In the present embodiment, 5 close port of spool, 6 position (see Fig. 2 and referring to Fig. 3), valve chamber is stretched in the outlet end 4 of side
2 and it is connected with the inner wall part of valve chamber 2 21, is defined as join domain X, transition passage 22 has been included at least in join domain X
Changeover portion 221 partial region.
Fig. 5 is fluid communication schematic diagram of the pressure-control valve after valve port unlatching in Fig. 2.
As shown in Figure 5 and referring to fig. 2.In the state that pressure-control valve is initially closed, when input end 3 and outlet end 4 it
Between pressure differential Δ F pressure when being greater than abutting force F with spring 7, valve port 6 is opened.In the fluid circulation route of join domain X
Are as follows: [input end 3-- valve port 6-- initial segment 223-- changeover portion 221 (part) -- outlet end 4]；Fluid in other regions circulates
Route are as follows: [input end 3-- valve port 6--223 initial segment -- the constant outlet end 222-valve chamber of restriction portion 2-- 4 changeover portion 221--].
Technology disclosed in this invention can guarantee the feelings in small lower pressure difference by the structural design optimization of changeover portion 221
The unlatching ability of condition lower valve, without flow disturbance image occurs.Further, after fluid enters changeover portion 221, then by constant
Restriction portion 222 can guarantee that the stationarity of spool sliding, the technical solution are especially suitable for the knot that valve chamber is stretched in outlet end 4
Structure, because spool, also by radial Fluid pressure, is be easy to cause while by axial flow of fluid pressure under this structure
It interferes with each other, so improving valve by design of the flow path area in axial direction to the descending transition passage in fluid outlet direction
Mandrel improves the adverse effect of fluid flow pressure to control action.
Fig. 5 a/ Fig. 5 b: being the pressure-control valve in Fig. 2 in the excessive and too small feelings of the ratio between the import of changeover portion and discharge area
Fluid state schematic diagram under condition；Wherein Fig. 5 a is the excessive feelings of the ratio between the flowpath face S1 of input end and the flow path area S2 of outlet end
Fluid communication under condition；Fig. 5 b is in the too small situation of the ratio between the flowpath face S1 of input end and the flow path area S2 of outlet end
Fluid communication.Such as Fig. 5 a and Fig. 5 b.It is tested by fluid analysis and practical study, it is as a preferred option, logical in transition
In the design in road 22, the relationship of the flow path area S2 of the flowpath face S1 and outlet end of input end is set as 35%S1 > S2 > 5%
S1, effect are more obvious.
Equally tested by fluid analysis and practical study, as a preferred option, the changeover portion in transition passage 22
221 length L in axial direction is greater than transition passage 22 in radial minimum widith H, and technical solution effect is more obvious.
Equally tested by fluid analysis and practical study, as a preferred option, the changeover portion in transition passage 22
221 length L in axial direction is greater than transition passage 22 in the difference (L > H1-H) of radial maximum width H1 and minimum widith H
When, technical solution effect is more obvious.
Fig. 6 is the pressure-control valve structural schematic diagram for another specific implementation that the present invention provides, and Fig. 7 is pressure in Fig. 6
The spool of control valve and the partial enlargement diagram of valve body relative engagement.
As shown in Fig. 7 and Fig. 6.It is with aforementioned schemes difference: in this embodiment, the spool 5 and valve of pressure-control valve
Body 1 is in the region of circumferentially opposed cooperation, and spool 5 is substantially in the constant cylindrical-shaped structure of external profile diameter, and the inner wall part 21A of valve chamber 2A
It is changed in the regional diameter.It specifically, is to be provided with the constant coarse pored first segment face 51A of internal diameter, outer radial from up to down
Spread the constant coarse pored third section face 53A of gradually big cone cell second segment face 52A, outer diameter in center.Valve port unlatching make spool to
In valve opening position sliding process, the outer rim cooperation of the first segment face 51A of valve chamber 2A and spool 5 constitutes constant constant of circulation area
The cooperation of the outer rim of the second segment face 52A of restriction portion 222A, valve chamber 2A and spool 5 constitutes circulation area continuously gradually small changeover portion
221A.Constant restriction portion 222A and changeover portion 221A and changeover portion 221A constitutes transition passage 22.
Those of ordinary skill in the art it should be understood that the expansion scheme role is identical as aforementioned schemes, so
Herein than repeating again.
Guide electromagnetic valve provided by the present invention is described in detail above.Specific case pair used herein
The principle of the present invention and embodiment are expounded, method of the invention that the above embodiments are only used to help understand
And its core concept.It should be pointed out that for those skilled in the art, before not departing from the principle of the invention
It puts, can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the guarantor of the claims in the present invention
It protects in range.
Claims (3)
1. a kind of pressure-control valve, the valve body (1) including having tubular valve chamber (2), the bottom of the valve chamber (2) is axially provided with
Valve port (6) further includes bottom and the fluid inlet end (3) that with the valve port (6) is connected to and institute of the setting in the valve body (1)
State the fluid outlet (4) of the inside portion connection of valve chamber (2), the cylindrical valve that setting can slide axially in the valve chamber (2)
Core (5), setting are in the valve chamber (2) by the spool (5) against the spring (7) of the valve port (6), which is characterized in that
Being formed between the peripheral part of the spool (5) and the inner wall part of the valve chamber (2) makes flow path circulation area in axial direction to outlet
The descending transitional fluid channel (22) of flow direction, when the valve port (6) are opened, fluid passes through the transition passage
(22) enter the valve chamber (2), the flow path circulation area of transition passage (22) input end is defined as S1, the transition passage
(22) flow path area of outlet end is defined as S2, then meets relationship: 35%S1 > S2 > 5%S1, transition passage (22) packet
Include that continuously gradually small changeover portion (221), the peripheral part of the spool (5) have cone to fluid outlet direction circulation area in axial direction
The first segment face (51) of mesa-shaped, the first segment face (51) constitute the changeover portion, and the changeover portion (221) is along axial length
(L) being greater than the transition passage (22) on radial minimum widith, the transition passage (22) further includes towards outlet end
The constant constant restriction portion (222) of fluid flow area.
2. pressure-control valve as described in claim 1, which is characterized in that the changeover portion (221) is big along axial length (L)
In difference of the transition passage (22) between radial maximum width and minimum widith.
3. such as the described in any item pressure-control valves of claim 1-2, which is characterized in that close the valve in the spool (5)
Mouth (6) position, the transition passage (22) and the fluid outlet (4) part are straight-through.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374425.1A CN110107719B (en) | 2015-05-13 | 2015-05-13 | Pressure control valve |
| CN201510241223.1A CN106286912B (en) | 2015-05-13 | 2015-05-13 | A kind of pressure-control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510241223.1A CN106286912B (en) | 2015-05-13 | 2015-05-13 | A kind of pressure-control valve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910374425.1A Division CN110107719B (en) | 2015-05-13 | 2015-05-13 | Pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106286912A CN106286912A (en) | 2017-01-04 |
| CN106286912B true CN106286912B (en) | 2019-09-10 |
Family
ID=57631461
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510241223.1A Active CN106286912B (en) | 2015-05-13 | 2015-05-13 | A kind of pressure-control valve |
| CN201910374425.1A Active CN110107719B (en) | 2015-05-13 | 2015-05-13 | Pressure control valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910374425.1A Active CN110107719B (en) | 2015-05-13 | 2015-05-13 | Pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106286912B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237906A (en) * | 2017-07-19 | 2017-10-10 | 上海德尔格医疗器械有限公司 | A kind of air-channel system of Pressure Relief Valve and medicine equipment |
| CN108479951A (en) * | 2018-03-18 | 2018-09-04 | 孙利韬 | Waste lithium cell burn-proof and explosion prevention safe and harmlessization processing equipment |
| CN108980129B (en) * | 2018-07-24 | 2020-04-07 | 中国航空工业集团公司西安飞行自动控制研究所 | Load holding control valve |
| US10962125B2 (en) * | 2018-08-17 | 2021-03-30 | Emerson Vulcan Holding Llc | Valve discs for use with fluid valves |
| CN110410506B (en) * | 2019-08-05 | 2020-04-28 | 哈尔滨工业大学 | Viscous medium pressure loading and unloading device and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2806003A1 (en) * | 1978-02-13 | 1979-08-16 | Josef Nemetz | Seal for pressure dependent valve - has jointing material in sealing area with membrane lip providing spring action |
| DE3738071A1 (en) * | 1986-11-13 | 1988-05-19 | Josef Nemetz | Safety valve with sealing at the piston guide |
| EP1138991A1 (en) * | 2000-03-30 | 2001-10-04 | Bestobell Valves | Safety valve |
| CN101107485A (en) * | 2005-02-28 | 2008-01-16 | 大金工业株式会社 | Expansion valve and refrigeration device |
| CN102401160A (en) * | 2011-08-09 | 2012-04-04 | 汪砚秋 | Conical-core pressure-difference check valve |
| CN203571137U (en) * | 2013-10-17 | 2014-04-30 | 成霖企业股份有限公司 | Pressure maintaining valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1803018A1 (en) * | 1968-10-14 | 1970-04-23 | Linde Ag | Pressure relief valve |
| US4036250A (en) * | 1976-02-04 | 1977-07-19 | Consolidated Valve Industries, Inc. | Blow-down safety valve |
| DE29713295U1 (en) * | 1997-07-25 | 1997-10-16 | Heilmeier & Weinlein | Safety valve for high pressure hydraulics |
| US8607818B2 (en) * | 2010-05-20 | 2013-12-17 | Dresser, Inc. | Pressure relief valve |
| JP6224972B2 (en) * | 2013-09-20 | 2017-11-01 | サーパス工業株式会社 | safety valve |
| CN103940159B (en) * | 2014-03-25 | 2017-08-29 | 浙江三花智能控制股份有限公司 | A kind of electric expansion valve |
| CN204153248U (en) * | 2014-10-17 | 2015-02-11 | 莱芜钢铁集团电子有限公司 | A kind of overflow modulating valve |
-
2015
- 2015-05-13 CN CN201510241223.1A patent/CN106286912B/en active Active
- 2015-05-13 CN CN201910374425.1A patent/CN110107719B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2806003A1 (en) * | 1978-02-13 | 1979-08-16 | Josef Nemetz | Seal for pressure dependent valve - has jointing material in sealing area with membrane lip providing spring action |
| DE3738071A1 (en) * | 1986-11-13 | 1988-05-19 | Josef Nemetz | Safety valve with sealing at the piston guide |
| EP1138991A1 (en) * | 2000-03-30 | 2001-10-04 | Bestobell Valves | Safety valve |
| CN101107485A (en) * | 2005-02-28 | 2008-01-16 | 大金工业株式会社 | Expansion valve and refrigeration device |
| CN102401160A (en) * | 2011-08-09 | 2012-04-04 | 汪砚秋 | Conical-core pressure-difference check valve |
| CN203571137U (en) * | 2013-10-17 | 2014-04-30 | 成霖企业股份有限公司 | Pressure maintaining valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110107719A (en) | 2019-08-09 |
| CN106286912A (en) | 2017-01-04 |
| CN110107719B (en) | 2020-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106286912B (en) | A kind of pressure-control valve | |
| CN205824233U (en) | Control valve and the cage for control valve | |
| CA2920105C (en) | A flow control system and control valve having closure assistance | |
| CN206386502U (en) | Control valve, fluid conditioner and the valve cage for control valve | |
| CN108131479B (en) | A kind of one-way throttle valve | |
| US10598288B2 (en) | Cascaded controllable fluid control valve and valve trim for a fluid control valve | |
| CN103216980A (en) | Bi-direction circulation expansion valve | |
| CN108368954A (en) | Multistage anti-surge valve | |
| CN106122551A (en) | The mechanism of size and method for adjustment valve | |
| CN210890160U (en) | Series connection valve core double sealing surface multistage pressure reduction regulating valve | |
| US10359118B2 (en) | Valve with integral balancing passage | |
| US20200018420A1 (en) | Noise attenuation trim assembly | |
| CN104583654A (en) | Double-seat valve with a seat-cleaning function | |
| CN102235540A (en) | Solenoid spool valve | |
| CN108930812A (en) | Flow adjusting ball valve | |
| CN217206395U (en) | Sand prevention flat gate valve for fracturing gas production well mouth | |
| CN109826969A (en) | The adjustable valve of the amount of restriction of a kind of pair of fluid | |
| CN107514465A (en) | Guide electromagnetic valve | |
| CN104455612B (en) | A kind of low vibration dynamic flow balance valve | |
| CN107178621B (en) | Stop valve for refrigerating system and valve rod thereof | |
| CN205591905U (en) | A self -adaptation formula stream entry control device for oil well | |
| CN105899863A (en) | Multistage trim for control valves | |
| US20220049773A1 (en) | Electric valve | |
| CN106051232A (en) | One-way valve applicable to large-flow working range and working method thereof | |
| CN108005746B (en) | Engine main oil duct pressure limiting valve and engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170215 Address after: 312500 Xinchang, Zhejiang Qixing street under the Liquan Applicant after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Applicant before: ZHEJIANG SANHUA Co.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231102 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 Xinchang County, Zhejiang Province, Qixing street, Liquan Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |