CN203500487U - Pressure pad superposition type throttling stop valve - Google Patents
Pressure pad superposition type throttling stop valve Download PDFInfo
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- CN203500487U CN203500487U CN201320389486.3U CN201320389486U CN203500487U CN 203500487 U CN203500487 U CN 203500487U CN 201320389486 U CN201320389486 U CN 201320389486U CN 203500487 U CN203500487 U CN 203500487U
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- pressure pad
- throttling
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Abstract
The utility model discloses a pressure pad superposition type throttling stop valve, which is characterized in that a pressure pad labyrinth type valve seat is arranged in a valve body to form three groups of throttling structures with taper hole throttling and superposition type slow release pressure relief; the pressure pad labyrinth type valve seat is formed in a mode that a labyrinth type pressure pad is assembled in the pressure pad cavity of the valve seat, and an annular buffer cavity, an air inlet, a group of radial vent holes and axial air outlets are formed inside the labyrinth type pressure pad; the air inlet, the radial vent holes and the axial air outlets are communicated with the annular buffer cavity; in such a way, high pressure gas can be throttled by the pressure pad labyrinth type valve seat to generate certain voltage drop, and then enters the taper hole throttling and the superposition type slow release pressure relief in sequence for step-by-step speed reduction and smooth pressure drop; therefore, the continuous smoothness of pressure drop can be furthest kept, and a shock noise phenomenon caused by turbulence or vortex due to excessively rapid pressure drop can be effectively prevented. The pressure pad superposition type throttling stop valve has the advantages of large throttling pressure drop amplitude, good speed reduction pressure drop smoothness, strong scouring-resistance and anti-cavitation capability, extremely low shock noise and long service life.
Description
Technical field
The utility model relates to a kind of pressure pad laminated throttling stop valve, and it belongs to the technical field of gas line network control apparatus, is particularly suitable for being installed on gas transmission line conveying gas is situated between and carries out High Pressure Difference expenditure and pressure.
Background technique
We know: petrochemical industry department is in order effectively to improve the transfer efficiency of gas line network system equipment, general is all to adopt first gas to be situated between to carry out the gas transmission operating type of high-pressure delivery after boosting again, by high pressure gas pipeline net, pressurized gas are delivered to behind destination, need to high-pressure air source, carry out steadily decompression through special-purpose voltage adjusting device and be down to after specified output pressure, then carry out air feed, aerating operation to user.According to investigating: in existing gas line network, the most frequently used voltage adjusting device is taper hole structure, the large class of labyrinth structure pressure regulator valve two.This two classes pressure regulator valve exists in pressure regulation operation process that operation vibrating noise is large, modification stability poor performance, the poor level of the pressure regulation turbulent serious cavitation erosion of narrow, medium and the shorter familiar lacunas of operating life among a small circle.The above-mentioned familiar lacunas that the applicant is in operation and exists in order to solve existing pressure governor, in July, 2012,27Xiang State Intellectual Property Office has filed an application the utility model patent technology that a kind of name is called " High Pressure Difference liquidate laminated throttle valve " (patent No. is ZL201220367845.0), it is that one group of pore that liquidates is set in valve seat, makes high-pressure medium be entered and in the relief chamber that liquidates, be liquidated collision effect and the reduction of speed that consumes energy voluntarily reduces pressure by the pore that liquidates.And in equipped one group of valve pocket outer wall nestable, the outer nestable formation ring cavity structure of throttling step by step, it can carry out the linear decompression of throttling step by step to air-flow.Through reality, use and show: it has certain effect to preventing " turbulent flow ", " cavitation " and then slowing down air-flow to the souring of sealing surface and throttle part in High Pressure Difference decompression process.But we also find in follow-up research and development and market survey: high-pressure medium still exists and moves the larger technical pattern defect of vibrating noise while liquidating collision in the relief chamber that liquidates of valve seat, and this is also existing " High Pressure Difference liquidate laminated throttle valve " also requires further improvement and perfect technical problem.
Model utility content
The purpose of this utility model is on prior art basis, to propose a kind of pressure pad laminated throttling stop valve with novel pressure pad mazy type valve seat construction.
The purpose of this utility model is achieved by the following technical solution:
A kind of pressure pad laminated throttling stop valve the utility model proposes, it comprises valve body, valve gap, be fitted to the valve seat in valve pocket, valve core housing, spool and the valve rod that is connected in spool, in valve core housing, equipped middle level is nestable successively, the slow chamber of pressing of the nestable formation outer shroud of internal layer, the slow chamber of pressing of interior ring, on valve core housing, be provided with one group of outer hub discharge orifice communicating with the slow pressure of outer shroud chamber, in inner stacks, put and be provided with one group of inner sleeve throttle orifice communicating with the slow pressure of interior ring chamber, on middle level is nestable, be provided with the slow middle cover throttle orifice of pressing chamber and the slow pressure of outer shroud chamber of ring in one group of connection, it is characterized in that: in valve seat, be provided with pressure pad chamber, in the pressure pad chamber of valve seat, be fitted with mazy type pressure pad, in mazy type pressure pad, be provided with the inlet hole of loop buffer chamber and the annular buffer cavity of connection, one group of vent radially, Axial-running Out pore, at valve seat top, be provided with the throttling taper hole communicating with pressure pad chamber, in spool bottom, be provided with the throttling axis of cone suitable with throttling taper hole and form taper hole throttle structure.The structural feature that the utility model carries out reducing pressure by regulating flow is: 1. equipped mazy type pressure pad loop buffer chamber is set in mazy type pressure pad and the inlet hole communicating with loop buffer chamber, a group radially vent, Axial-running Out pore form pressure pad mazy type valve seat throttle structure in the pressure pad chamber of valve seat; 2. the throttling taper hole communicating with pressure pad chamber is set at valve seat top, in spool bottom, is provided with the throttling axis of cone suitable with throttling taper hole and forms taper hole throttle structure; 3. in valve core housing, nestable, slow chamber, the slow chamber of pressing of interior ring of pressing of the nestable composition outer shroud of internal layer, equipped middle level forms slowly-releasing decompression throttle structure successively.It can make high pressure air be situated between and in turn pass through above-mentioned " pressure pad mazy type valve seat throttle structure ", " taper hole throttle structure " and " laminated slowly-releasing decompression throttle structure " carries out three throttlings, reduces pressure step by step when running job.Particularly make pressurized gas first after pressure pad mazy type valve seat carries out throttling and produces a constant pressure drop, enter again " entering taper hole throttle structure " and carry out second depressurized, can greatly extenuate the cavitation effect of washing away that gas is situated between to the throttling axis of cone, operation vibrating noise can be reduced to minimum degree.The utility model shows through on probation: this San road throttle structure that is combined to form successively in valve body is particularly conducive to high pressure air is situated between and carries out reducing pressure by regulating flow, can really realize the steadily goal of the invention of decompression of High Pressure Difference, there is the outstanding advantages of reliable, the shockproof noise of stable and safe in operation and long working life.
Furthermore, the utility model also has following technical characteristics:
Radially vent, Axial-running Out pore are by the uniform intervening portion of symmetry, to arrange respectively in mazy type pressure pad one group.This structural design has obvious effect to the reducing pressure by regulating flow effect of further enhancing pressure pad mazy type valve seat.
The aperture of one group of described inner sleeve throttle orifice, middle cover throttle orifice, outer hub discharge orifice is that the mode increasing step by step successively in proportion arranges.The gas medium warp that this structural design can make to import from one group of inner sleeve throttle orifice, overlap throttle orifice until the steadily step-down step by step successively of outer hub discharge orifice, can effectively prevent, because abrupt pressure reduction produces " turbulent flow " phenomenon, the stationary performance of further raising step-down decompression also being had to certain effect.
Nestable at internal layer, middle level is nestable, be, by the equal mode for cloth of symmetry, one group of inner sleeve throttle orifice, middle cover throttle orifice, outer hub discharge orifice are set respectively on valve core housing.This structural design also has certain effect to further enhancing reducing pressure by regulating flow effect.
Described internal layer is nestable, middle level is nestable, valve core housing is to be equipped with by one group of inner sleeve throttle orifice, middle cover throttle orifice, outer hub discharge orifice successively interlaced arrangement.This equipped structure can effectively extend the throttling passage to air-flow, to strengthening reducing pressure by regulating flow effect, also has certain effect.
The utility model compared with the existing technology has following substantive distinguishing features and progress:
The utility model is that " pressure pad mazy type valve seat " is set in valve body, " taper hole throttling " and " decompression of laminated slowly-releasing " three grades of reducing pressure by regulating flow structures, it can be situated between and carry out successively throttling high pressure air, slow down, balanced decompression, can on the basis of High Pressure Difference decompression, maintain the continuous strand stability of pressure drop, can effectively avoid because of gas " pressure drop is too urgent " initiation " turbulent flow ", " eddy current " produces the phenomenon of vibrating noise, can farthest extenuate the cavitation effect of washing away that gas is situated between to throttle part, the utlity model has reducing pressure by regulating flow amplitude large, deceleration step-down stationary performance is good, resistance to erosion anti-cavitation ability is strong, property safe and reliable to operation is high, the outstanding advantages of the little and long working life of vibrating noise.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model, and accompanying drawing also makes an abstract.
Fig. 2 is A-A view (amplification) of Fig. 1, is illustrated in valve core housing successively that equipped middle level is nestable, the slow structural representation of pressing decompression of throttling is step by step carried out in slow chamber, the slow chamber of pressing of interior ring of pressing of the nestable formation outer shroud of internal layer.
Fig. 3 is B-B view (amplification) of Fig. 1, is illustrated in mazy type pressure pad by the uniform interlace mode of symmetry, to arrange one group radially vent, Axial-running Out pore carry out the structural representation of expenditure and pressure.
Description of symbols in accompanying drawing:
1 is suction tude flange, 2 is pressure pad chamber, 3 is steam outlet pipe flange, 4 is mazy type pressure pad, 5 is throttling taper hole, 6 is arrow, 7 is spool, 8 is outlet passageway, 9 is valve rod, 10 is handwheel, 11 is vavle shelf, 12 is valve gap, 13 is one group of bolt, 14 is valve core housing, 15 is equalizing orifice, 16 is that middle level is nestable, 17 is valve body, 18 is valve seat, 19 is the throttling axis of cone, 20 is loop buffer chamber, 21 is valve pocket, 22 is inlet hole, 23 is gas-entered passageway, 24 is that internal layer is nestable, 25 is outer hub discharge orifice, 26 is inner sleeve throttle orifice, 27 press chamber for outer shroud is slow, 28 is the slow chamber of pressing of interior ring, 29 is middle cover throttle orifice, 30 is Axial-running Out pore, 31 is one group of radially vent.
Embodiment
Below in conjunction with accompanying drawing, further illustrate embodiment of the present utility model:
A kind of pressure pad laminated throttling stop valve the utility model proposes, it is mainly by valve body 17, one group of bolt 13 is connected in the valve gap 12 on valve body 17, vavle shelf 11, be fitted to the valve seat 18 in valve pocket 21, spool 7, valve rod 9, valve core housing 14, middle level nestable 16 and internal layer nestable 24 forms, on spool 7, be provided with equalizing orifice 15, in the pressure pad chamber 2 of valve seat 18, be fitted with mazy type pressure pad 4, in mazy type pressure pad 4, be provided with loop buffer chamber 20 and the inlet hole 22 that is communicated in loop buffer chamber 20, one group of vent 31 radially, Axial-running Out pore 30 forms " pressure pad mazy type valve seat " throttle structure, in mazy type pressure pad 4 one group vent 31 radially, Axial-running Out pore 30 is to arrange by the uniform intervening portion of symmetry, can effectively strengthen the reducing pressure by regulating flow effect of " pressure pad mazy type valve seat ".At valve seat 18 tops, be provided with the throttling taper hole 5 communicating with pressure pad chamber 2, in spool 7 bottoms, be provided with the throttling axis of cone suitable with throttling taper hole 5 19 and form " taper hole throttling " structure, the described throttling axis of cone 19 is overall structures with spool 7, can thoroughly stop equipment accident loosening from spool 7 bottoms because of the throttling axis of cone 19 or that come off and cause vibrating noise, affect reducing pressure by regulating flow.Described middle level nestable 16, internal layer nestable 24 is to be fitted to successively the slow chamber 27 of pressing of the interior formation outer shroud of valve core housing 14, the slow chamber 28 of pressing of interior ring, on valve core housing 14, by the equal mode for cloth of symmetry, one group of outer hub discharge orifice 25 communicating with the slow pressure of outer shroud chamber 27 is set, on internal layer nestable 24, by the equal mode for cloth of symmetry, one group of inner sleeve throttle orifice 26 communicating with the slow pressure of interior ring chamber 28 is set, on middle level nestable 16 by symmetry equal mode for cloth arrange one group be communicated with in the slow middle cover throttle orifice 29 of pressing chamber 28 and the slow pressure of outer shroud chamber 27 of ring, can be in the interior formation of valve core housing 14 " decompression of laminated slowly-releasing " reducing pressure by regulating flow structure.Concrete while making assembling: the mode that inner sleeve throttle orifice 26, middle cover throttle orifice 29, the aperture of outer hub discharge orifice 25 that internal layer is nestable 24, middle level is nestable 16, arrange respectively on valve core housing 14 increases according to a certain percentage successively is step by step made, and internal layer is nestable 24, middle level is nestable 16, valve core housing 14 is assembled by one group of inner sleeve throttle orifice 26, middle cover throttle orifice 29, outer hub discharge orifice 25 successively interlaced arrangement.This continuous and stable performance to further raising step-down decompression has certain effect.It is to carry out in the following manner expenditure and pressure operation: first the suction tude flange 1 of valve body 17, steam outlet pipe flange 3 are fixedly connected on high pressure gas pipeline road, slowly rotate handwheel 10 and pull on spool 7 and move to required aperture by valve rod 9, can open throttling stop valve and carry out expenditure and pressure step-down operation.At this moment, pressurized gas are by as shown in arrow 6: by gas-entered passageway 23, entered in valve pocket 21, then from the inlet hole 22 of mazy type pressure pad 4, after one group radially vent 31 disperses expenditure and pressures, import again and in loop buffer chamber 20, carry out buffer deceleration step-down.Pressurized gas are first through " pressure pad mazy type valve seat ", to carry out throttling to slow down after generation one constant pressure drop, the throttling taper hole 5 that enters again mazy type pressure pad 4 tops be suspended in the throttling axis of cone 19 in throttling taper hole 5 and carry out " taper hole throttling " step-down of again slowing down, and then enter the slow chamber 28 of pressing of interior ring through the inner sleeve throttle orifice 26 of internal layer nestable 24, through middle level, nestable 16 middle cover throttle orifice 29 enters the slow chamber 27 of pressing of outer shroud and in turn carries out slowly-releasing deceleration steadily step-down step by step, last after one group of outer hub discharge orifice 25 of valve core housing 14 carries out throttling, enter again outlet passageway 8 by steam outlet pipe flange 3 stably delivery pressure be down to the gas of required rating value, so far, can realize the goal of the invention of steady reducing pressure by regulating flow.
It should be noted that: the utility model proposes the further Improvement and perfection of making on " High Pressure Difference liquidate laminated throttle valve " (patent No. is ZL201220367845.0) patented technology basis the applicant, it is that " pressure pad mazy type valve seat " and " taper hole throttling " are set in valve body, " decompression of laminated slowly-releasing " is combined to form three road throttle structures, it can farthest keep the continuous strand stability of pressure drop on the basis of High Pressure Difference decompression, can effectively prevent because of the too urgent initiation of gas pressure drop " turbulent flow ", " eddy current " and produce vibrating noise phenomenon, there is reducing pressure by regulating flow amplitude large, deceleration step-down stationary performance is good, resistance to erosion anti-cavitation ability is strong, the advantage of the minimum and long working life of vibrating noise.
Claims (5)
1. a pressure pad laminated throttling stop valve, it comprises valve body (17), valve gap (12), be fitted to the valve seat (18) in valve pocket (21), valve core housing (14), spool (7) and be connected in the valve rod (9) of spool (7), in valve core housing (14), be equipped with successively middle level nestable (16), internal layer nestable (24) forms the slow chamber (27) of pressing of outer shroud, the slow chamber (28) of pressing of interior ring, on valve core housing (14), be provided with one group of outer hub discharge orifice (25) communicating with outer shroud slow pressure chamber (27), on internal layer nestable (24), be provided with one group of inner sleeve throttle orifice (26) communicating with interior ring slow pressure chamber (28), on middle level nestable (16), be provided with slow chamber (28) and the outer shroud of pressing of ring in one group of connection and delay the middle cover throttle orifice (29) of pressing chamber (27), it is characterized in that: in valve seat (18), be provided with pressure pad chamber (2), in the pressure pad chamber (2) of valve seat (18), be fitted with mazy type pressure pad (4), in mazy type pressure pad (4), be provided with the inlet hole (22) of loop buffer chamber (20) and the annular buffer cavity of connection (20), one group of vent (31) radially, Axial-running Out pore (30), at valve seat (18) top, be provided with the throttling taper hole (5) communicating with pressure pad chamber (2), in spool (7) bottom, be provided with the throttling axis of cone (19) suitable with throttling taper hole (5) and form taper hole throttle structure.
2. pressure pad laminated throttling stop valve according to claim 1, is characterized in that: radially vent (31), Axial-running Out pore (30) are by the uniform intervening portion of symmetry, to arrange respectively to a group in mazy type pressure pad (4).
3. pressure pad laminated throttling stop valve according to claim 1 and 2, is characterized in that: the aperture of described one group of inner sleeve throttle orifice (26), middle cover throttle orifice (29), outer hub discharge orifice (25) is that the mode increasing step by step successively in proportion arranges.
4. pressure pad laminated throttling stop valve according to claim 1 and 2, is characterized in that: on internal layer nestable (24), middle level nestable (16), valve core housing (14), be, by the equal mode for cloth of symmetry, one group of inner sleeve throttle orifice (26), middle cover throttle orifice (29), outer hub discharge orifice (25) are set respectively.
5. pressure pad laminated throttling stop valve according to claim 1 and 2, is characterized in that: described internal layer nestable (24), middle level nestable (16), valve core housing (14) are to be equipped with by one group of inner sleeve throttle orifice (26), middle cover throttle orifice (29), outer hub discharge orifice (25) successively interlaced arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389486.3U CN203500487U (en) | 2013-07-02 | 2013-07-02 | Pressure pad superposition type throttling stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389486.3U CN203500487U (en) | 2013-07-02 | 2013-07-02 | Pressure pad superposition type throttling stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500487U true CN203500487U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320389486.3U Expired - Lifetime CN203500487U (en) | 2013-07-02 | 2013-07-02 | Pressure pad superposition type throttling stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179717A (en) * | 2015-10-26 | 2015-12-23 | 四川长仪油气集输设备股份有限公司 | Anti-scouring and anti-corrosion high-pressure throttling valve and producing method of combined valve element |
-
2013
- 2013-07-02 CN CN201320389486.3U patent/CN203500487U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179717A (en) * | 2015-10-26 | 2015-12-23 | 四川长仪油气集输设备股份有限公司 | Anti-scouring and anti-corrosion high-pressure throttling valve and producing method of combined valve element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN CHANGYI OIL-GAS GATHERING TRANSPORTAION EQ Free format text: FORMER NAME: LESHAN CHANGYI VALVE MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 614000 Leshan City, Central District, Sichuan Le Lok Road, No. 16 Patentee after: SICHUAN CHANGYI OIL-GAS GATHERING TRANSPORTATION EQUIPMENT CO.,LTD. Address before: 614000 Leshan City, Central District, Sichuan Le Lok Road, No. 16 Patentee before: LESHAN CHANGYI VALVE MANUFACTURING Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |