CN102494156B - Pressure releasing command valve - Google Patents
Pressure releasing command valve Download PDFInfo
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- CN102494156B CN102494156B CN 201110419804 CN201110419804A CN102494156B CN 102494156 B CN102494156 B CN 102494156B CN 201110419804 CN201110419804 CN 201110419804 CN 201110419804 A CN201110419804 A CN 201110419804A CN 102494156 B CN102494156 B CN 102494156B
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Abstract
This invention discloses a pressure releasing command valve; by dint of a special structure arrangement, the pressure releasing command valve disclosed by this invention makes an elastic part which has a control action develop the action through a two-grade action method and reduces impact for a sealing structure when a device is acted; in addition, pipelines are arranged more reasonably; the valve disclosed by this invention improves traceability of the device for changing of fluid pressure and increases response speed for the changing of the fluid pressure.
Description
Technical field
The present invention relates to a kind of valve that can carry out pressure release to controlling hydraulic pressure, relate in particular to a kind of pressure releasing command valve.
Background technique
In the prior art, the valve of similar structure adopts the mode of structure of Regulation spring (parts shown in the mark 8 in the structure of the present invention) direct effect to the sealing surface between spool and the valve seat, so that install when under hydraulic pressure, moving, the sealing surface of valve seat and spool need to bear very large impact force, sealing surface damages easily, affect the life-span of valve, and this scheme of only having an elastic member is so that Regulation spring needs very large length just can meet the demands; The power of Regulation spring all is loaded on the sealing surface of seat, thereby affects the working life of sealing surface; And its pilot pressure need to could arrive in the second radial hole through long pipeline and bring into play control action, and it is slower to the speed of response that hydraulic pressure changes, and affects the normal operation of valve.
Summary of the invention
For the problem in the background technique, the present invention proposes a kind of pressure releasing command valve, comprise valve seat, valve body, mangetic core assembly, spring seat and Regulation spring, be provided with an axial bore and three radial holes on the valve body; Article three, radial hole is communicated with axial bore and external environmemt; Article three, radial hole is followed successively by the first radial hole, the second radial hole and the 3rd radial hole from left to right; Valve seat inserts and the first radial hole is sealed from the left end of axial bore, makes between the first radial hole and two other radial hole and isolates, and also with the left end sealing of axial bore, valve seat is fixedly connected with valve body valve seat simultaneously; Be provided with axial shrinkage pool on the valve seat interior edge face, be provided with relief hole radially on the valve seat sidewall, be communicated with by shrinkage pool and relief hole between the first radial hole and two other radial hole; The spring seat left end inserts and axial bore is sealed from the right-hand member of axial bore, can be in axial sliding between spring seat and the valve body; Mangetic core assembly places in the space between axial bore valve seat and the spring seat; The Regulation spring left end contacts with the spring seat right side, and Regulation spring applies pretightening force to spring seat;
Innovation of the present invention is: described mangetic core assembly is comprised of spool, valve core case, valve core spring, piston and valve core spring seat; The spool left end is provided with a sealing head, and when sealing head contacted with valve seat, shrinkage pool was closed; The spool middle part is reduced diameter section, and the spool right-hand member is enlarged diameter section, and the diameter of reduced diameter section is less than enlarged diameter section; The intersection of reduced diameter section and enlarged diameter section forms a sealing surface;
Be provided with axial variable cross section through hole on the valve core case, left section diameter of variable cross section through hole is less than right section diameter, and left section diameter of variable cross section through hole is greater than the reduced diameter section diameter of spool; The reduced diameter section of spool is socketed in left section of variable cross section through hole, and the sealing head of spool places outside the left side of valve core case, and the enlarged diameter section of spool places in right section of valve core case; Axial relative sliding between valve core case and the spool; The valve core case outer wall contacts with the axial bore inwall; Be provided with pod apertures radially on the valve core case, pod apertures is communicated with the 3rd radial hole and variable cross section through hole; The intersection of left section of the variable cross section through hole and right section forms a step surface, and step surface is when sealing surface on the spool contacts, and the second radial hole and the 3rd radial hole are isolated; Step surface is communicated with by variable cross section through hole and pod apertures between the second radial hole and the 3rd radial hole when sealing surface on the spool separates; Distance of relative movement between valve seat and the spool is designated as length A, and the stroke of relative movement is designated as length B between spool and the valve core case, and length A is greater than length B;
The valve core spring seat is provided with spring eye on the left side, and valve core spring places in the spring eye; Valve core spring seat left end is fixedly connected with the valve core case right-hand member, keeps at a certain distance away between valve core spring seat left end and the spool right-hand member; Valve core spring is in compressive state all the time; Valve core spring seat right-hand member contacts with the spring seat left side; Can be in axial sliding between valve core spring seat and the valve body, the stroke of the relative movement between valve core spring seat and the valve body is designated as length C, and length C equals length B and adds length A;
Piston sleeve is connected on valve core spring seat middle part, and piston is fixedly connected with the valve core spring seat; The space at place, piston left side is communicated with the 3rd radial hole.
Useful technique effect of the present invention is: adopt the structural type of two-stage spring, avoid larger spring force direct effect to sealing surface, the working life of the sealing surface of prolongation; The total compactness is small and exquisite, and the fast response time that fluid pressure changes makes valve possess better control effect.
Description of drawings
Fig. 1, structural representation of the present invention when mangetic core assembly is not installed;
Component locations when Fig. 2, device are in a state concerns schematic representation;
Component locations when Fig. 3, device are in the b state concerns schematic representation;
Complete structural representation after Fig. 4, the present invention are connected with peripheral components.
Embodiment
The component parts of pressure releasing command valve of the present invention comprises valve seat 1, valve body 2, mangetic core assembly, spring seat 7 and Regulation spring 8, and the structure of all parts and interconnected relationship are:
Be provided with an axial bore 2-1 and three radial holes on the valve body 2; Article three, radial hole is communicated with axial bore 2-1 and external environmemt; Article three, radial hole is followed successively by the first radial hole 2-2, the second radial hole 2-3 and the 3rd radial hole 2-4 from left to right; Valve seat 1 inserts and the first radial hole 2-2 is sealed from the left end of axial bore 2-1, makes between the first radial hole 2-2 and two other radial hole and isolates, and also with the left end sealing of axial bore 2-1, valve seat 1 is fixedly connected with valve body 2 valve seat 1 simultaneously; Be provided with axial shrinkage pool 1-1 on valve seat 1 interior edge face, be provided with relief hole 1-2 radially on valve seat 1 sidewall, be communicated with by shrinkage pool 1-1 and relief hole 1-2 between the first radial hole 2-2 and two other radial hole; Spring seat 7 left ends insert and axial bore 2-1 are sealed from the right-hand member of axial bore 2-1, can be in axial sliding between spring seat 7 and the valve body 2 (certainly, also be provided with on the valve body 2 spring is carried out spacing and mangetic core assembly is carried out spacing block parts, see structure shown in the mark 12 among the figure); Mangetic core assembly places in the space between axial bore 2-1 valve seat 1 and the spring seat 7; Regulation spring 8 left ends contact with spring seat 7 right sides, Regulation spring 8 applies pretightening force to spring seat 7, and (the large I of pretightening force is adjusted as required flexibly, the housing of Regulation spring 8 and the setting of other structural members are installed are the basic skills that those of ordinary skill should be grasped, do not repeat them here); Measuring hole (seeing structure shown in the mark 10 among the figure) also can be set on the valve body 2, be used for the setting pressure instrument;
In the aforementioned structure, the first radial hole 2-2 is used for pressure release, and the second radial hole 2-3 is for delivery of control hydraulic pressure, and the 3rd radial hole 2-4 is for the action of actuating valve core assembly and to the second radial hole 2-3 pipage control hydraulic pressure;
Core innovative point of the present invention is the structure of mangetic core assembly, and its concrete structure is: described mangetic core assembly is comprised of spool 3, valve core case 4, valve core spring 5, piston 6 and valve core spring seat 9; Spool 3 left ends are provided with a sealing head 3-1, and when sealing head 3-1 contacted with valve seat 1, shrinkage pool 1-1 was closed; Spool 3 middle parts are reduced diameter section 3-2, and spool 3 right-hand members are enlarged diameter section 3-3, and the diameter of reduced diameter section 3-2 is less than enlarged diameter section 3-3; The intersection of reduced diameter section 3-2 and enlarged diameter section 3-3 forms a sealing surface 3-4;
Be provided with axial variable cross section through hole on the valve core case 4, left section 4-1 diameter of variable cross section through hole is less than right section 4-2 diameter, and left section 4-1 diameter of variable cross section through hole is greater than the reduced diameter section 3-2 diameter of spool 3; The reduced diameter section 3-2 of spool 3 is socketed in the left section 4-1 of variable cross section through hole, and the sealing head 3-1 of spool 3 places outside the left side of valve core case 4, and the enlarged diameter section 3-3 of spool 3 places in the right section 4-2 of valve core case 4; Axial relative sliding between valve core case 4 and the spool 3; Valve core case 4 outer walls contact with axial bore 2-1 inwall; Be provided with pod apertures 4-3 radially on the valve core case 4, pod apertures 4-3 is communicated with the 3rd radial hole 2-4 and variable cross section through hole; Left section 4-1 of variable cross section through hole and the intersection of right section 4-2 form a step surface 4-4, step surface 4-4 when sealing surface 3-4 on the spool 3 contacts, the second radial hole 2-3 and the 3rd radial hole 2-4 isolation; Step surface 4-4 is communicated with by variable cross section through hole and pod apertures 4-3 between the second radial hole 2-3 and the 3rd radial hole 2-4 when sealing surface 3-4 on the spool 3 separates; Distance of relative movement between valve seat 1 and the spool 3 is designated as length A, and the stroke of relative movement is designated as length B between spool 3 and the valve core case 4, and length A is greater than length B;
The valve core spring seat is provided with spring eye on 9 left sides, and valve core spring 5 places in the spring eye; Valve core spring seat 9 left ends are fixedly connected with valve core case 4 right-hand members, keep at a certain distance away between valve core spring seat 9 left ends and spool 3 right-hand members; Valve core spring 5 is in compressive state all the time; Valve core spring seat 9 right-hand members contact with spring seat 7 left sides; Can be in axial sliding between valve core spring seat 9 and the valve body 2; The stroke of the relative movement between valve core spring seat 9 and the valve body 2 is designated as length C, and length C is greater than length B
Piston 6 is socketed in valve core spring seat 9 middle parts, and piston 6 is fixedly connected with valve core spring seat 9; The space at place, piston 6 left sides is communicated with the 3rd radial hole 2-4.Wherein, the radius size of piston 6 can be adjusted as required, if the radius of piston 6 is during less than axial bore 2-1 internal diameter, can be at piston 6 outer increase gasket rings, to guarantee the guidance quality of piston 6 axial motions, if the radius of piston 6 and axial bore 2-1 internal diameter just mate, then take out gasket ring and get final product (mark 11 shown structures namely are gasket rings in the Figure of description);
Working principle of the present invention is: 1) superpressure does not appear in the hydrodynamic pressure in Oil-Gas Gathering Transferring Pipeline, during normal operation, each parts of pressure releasing command valve are in position shown in Figure 2, the active force of Regulation spring 8 is greater than the thrust of medium to piston 6 at this moment, spring seat 7 left sides contact with valve body 2 right sides that (in fact spring seat 7 is to contact with bounding means on the valve body 2, can think that bounding means is exactly the part of valve body 2) and with valve core spring seat 9 top of turning left, piston 6 and valve core case 4 also are in maximum displacement place of left-hand thereupon, at this moment, spool 3 is also pushed up left by valve core spring 5, the sealing head 3-1 of spool 3 left ends withstand on the valve seat 1 shrinkage pool 1-1 opening and with shrinkage pool 1-1 sealing, make between the first radial hole 2-2 and all the other two radial holes to be in isolation; The second radial hole 2-3 and the 3rd radial hole 2-4 are in connected state by the duct on the valve core case 4; Control valve is in closed condition.
2) hydrodynamic pressure in Oil-Gas Gathering Transferring Pipeline is excessive, when surpassing normal operating pressure: as shown in Figure 3, during left active force that the active force to the right that hydraulic pressure causes piston 6 applies to spring seat 7 greater than Regulation spring 8, valve core spring seat 9 is along with piston 6 moves right to maximum displacement place of dextrad, because length C is greater than length B, sealing surface 3-4 on the spool 3 contacts with step surface 4-4 on the valve core case 4, so that the duct on the valve core case 4 is closed, isolate between the second radial hole 2-3 and the 3rd radial hole 2-4, stoped the 3rd radial hole 2-4 to continue to transmit hydraulic pressure to the second radial hole 2-3, simultaneously, the sealing head 3-1 of spool 3 left ends also separates with shrinkage pool 1-1 on the valve seat 1, so that the first radial hole 2-2 and the second radial hole 2-3 are communicated with, the liquid of high pressure just outwards releases by the first radial hole 2-2, and the hydraulic pressure in the second radial hole 2-3 is reduced; Control valve is opened pressure release.
Certainly, the process that the action of device transforms from the normal pressure working state to the superpressure working state, certainly have intermediateness, namely sealing surface 3-4 and step surface 4-4 are in open mode, and sealing head 3-1 and shrinkage pool 1-1 are in semi-open state simultaneously.
Preamble all describes as an example of hydraulic pressure example, and real fluid can also be gas.
The immediate product of structural type and the present invention may be DANFLO Control Valves 400 Series Model 20 products that Neil valve company produces, the present invention by comparison, the present invention has adopted the two-stage spring that restoring force is provided, avoid because of single-stage spring direct effect sealing surface being caused excessive shock, improved the life-span of sealing surface, and the pipeline setting is more reasonable, make the pressure of valve convection cell change more responsive, improved the speed of response of device, the control better effects if.
Claims (1)
1. a pressure releasing command valve comprises valve seat (1), valve body (2), mangetic core assembly, spring seat (7) and Regulation spring (8), is provided with an axial bore (2-1) and three radial holes on the valve body (2); Article three, radial hole is communicated with axial bore (2-1) and external environmemt; Article three, radial hole is followed successively by the first radial hole (2-2), the second radial hole (2-3) and the 3rd radial hole (2-4) from left to right; Valve seat (1) inserts and the first radial hole (2-2) is sealed from the left end of axial bore (2-1), make between the first radial hole (2-2) and two other radial hole and isolate, also with the left end sealing of axial bore (2-1), valve seat (1) is fixedly connected with valve body (2) valve seat (1) simultaneously; Be provided with axial shrinkage pool (1-1) on valve seat (1) interior edge face, be provided with relief hole (1-2) radially on valve seat (1) sidewall, be communicated with by shrinkage pool (1-1) and relief hole (1-2) between the first radial hole (2-2) and two other radial hole; Spring seat (7) left end inserts and axial bore (2-1) is sealed from the right-hand member of axial bore (2-1), can be in axial sliding between spring seat (7) and the valve body (2); Mangetic core assembly places in the space between axial bore (2-1) valve seat (1) and the spring seat (7); Regulation spring (8) left end contacts with spring seat (7) right side, and Regulation spring (8) applies pretightening force to spring seat (7);
It is characterized in that: described mangetic core assembly is comprised of spool (3), valve core case (4), valve core spring (5), piston (6) and valve core spring seat (9); Spool (3) left end is provided with a sealing head (3-1), and when sealing head (3-1) and valve seat (1) when contacting, shrinkage pool (1-1) is closed; Spool (3) middle part is reduced diameter section (3-2), and spool (3) right-hand member is enlarged diameter section (3-3), and the diameter of reduced diameter section (3-2) is less than enlarged diameter section (3-3); Reduced diameter section (3-2) forms a sealing surface (3-4) with the intersection of enlarged diameter section (3-3);
Be provided with axial variable cross section through hole on the valve core case (4), left section (4-1) diameter of variable cross section through hole is less than right section (4-2) diameter, and left section (4-1) diameter of variable cross section through hole is greater than reduced diameter section (3-2) diameter of spool (3); The reduced diameter section (3-2) of spool (3) is socketed in left section (4-1) of variable cross section through hole, the sealing head (3-1) of spool (3) places outside the left side of valve core case (4), and the enlarged diameter section (3-3) of spool (3) places in right section (4-2) of valve core case (4); Axial relative sliding between valve core case (4) and the spool (3); Valve core case (4) outer wall contacts with axial bore (2-1) inwall; Be provided with pod apertures (4-3) radially on the valve core case (4), pod apertures (4-3) is communicated with the 3rd radial hole (2-4) and variable cross section through hole; Left section (4-1) of variable cross section through hole and the intersection of right section (4-2) form a step surface (4-4), and the sealing surface (3-4) on step surface (4-4) and the spool (3) is when contacting, the second radial hole (2-3) and the 3rd radial hole (2-4) isolation; Sealing surface (3-4) on step surface (4-4) and the spool (3) is communicated with by variable cross section through hole and pod apertures (4-3) between the second radial hole (2-3) and the 3rd radial hole (2-4) when separating; Distance of relative movement between valve seat (1) and the spool (3) is designated as length A, and the stroke of relative movement is designated as length B between spool (3) and the valve core case (4), and length A is greater than length B;
Valve core spring seat (9) is provided with spring eye on the left side, and valve core spring (5) places in the spring eye; Valve core spring seat (9) left end is fixedly connected with valve core case (4) right-hand member, keeps at a certain distance away between valve core spring seat (9) left end and spool (3) right-hand member; Valve core spring (5) is in compressive state all the time; Valve core spring seat (9) right-hand member contacts with spring seat (7) left side; Can be in axial sliding between valve core spring seat (9) and the valve body (2), the stroke of the relative movement between valve core spring seat (9) and the valve body (2) is designated as length C, and length C equals length B and adds length A;
Piston (6) is socketed in valve core spring seat (9) middle part, and piston (6) is fixedly connected with valve core spring seat (9); The space at place, piston (6) left side is communicated with the 3rd radial hole (2-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110419804 CN102494156B (en) | 2011-12-15 | 2011-12-15 | Pressure releasing command valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110419804 CN102494156B (en) | 2011-12-15 | 2011-12-15 | Pressure releasing command valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102494156A CN102494156A (en) | 2012-06-13 |
| CN102494156B true CN102494156B (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110419804 Active CN102494156B (en) | 2011-12-15 | 2011-12-15 | Pressure releasing command valve |
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| Country | Link |
|---|---|
| CN (1) | CN102494156B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979365A (en) * | 2017-05-18 | 2017-07-25 | 盐城欧润石化设备制造有限公司 | A kind of deadweight safety valve |
| JP6974834B2 (en) * | 2017-10-02 | 2021-12-01 | 株式会社ニッキ | regulator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0215541A1 (en) * | 1985-09-11 | 1987-03-25 | Anderson-Greenwood Usa, Inc. | Pressure-responsive pilot valve |
| CN102128282A (en) * | 2010-01-14 | 2011-07-20 | 长沙理工大学 | Pressure control switching valve |
| CN201944365U (en) * | 2010-04-09 | 2011-08-24 | 珠海市舒丽玛温控卫浴设备有限公司 | Pressure temperature safety valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMO20080043A1 (en) * | 2008-02-19 | 2009-08-20 | P A S R L | PERFECT PRESSURE BY-PASS VALVE AND ADJUSTMENT VALVE. |
| DE102010006223A1 (en) * | 2010-01-28 | 2011-08-18 | Voß, Wolfgang, 58239 | Pressure relief valve with a seat valve seal |
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2011
- 2011-12-15 CN CN 201110419804 patent/CN102494156B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0215541A1 (en) * | 1985-09-11 | 1987-03-25 | Anderson-Greenwood Usa, Inc. | Pressure-responsive pilot valve |
| CN102128282A (en) * | 2010-01-14 | 2011-07-20 | 长沙理工大学 | Pressure control switching valve |
| CN201944365U (en) * | 2010-04-09 | 2011-08-24 | 珠海市舒丽玛温控卫浴设备有限公司 | Pressure temperature safety valve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009－197995A 2009.09.03 |
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| CN102494156A (en) | 2012-06-13 |
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