CN103423469B - High-pressure-difference gas-solid two-phase flow regulating valve - Google Patents
High-pressure-difference gas-solid two-phase flow regulating valve Download PDFInfo
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- CN103423469B CN103423469B CN201310354617.9A CN201310354617A CN103423469B CN 103423469 B CN103423469 B CN 103423469B CN 201310354617 A CN201310354617 A CN 201310354617A CN 103423469 B CN103423469 B CN 103423469B
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Abstract
The invention discloses a high pressure difference gas-solid two-phase flow regulating valve which is characterized in that: a valve cage is arranged in an inner cavity formed by the valve cover and the valve body, overflowing holes are uniformly distributed in the valve cage, and a medium from a valve inlet enters the inner cavity of the valve body through the overflowing holes in the valve cage; a throttling element is fixedly arranged in the valve body, a cylindrical inner cavity of the throttling element is communicated with a valve outlet, and throttling holes with large and small diameters are sequentially arranged on the cylindrical wall of the throttling element from top to bottom along the axial direction; the axially movable valve core is positioned in the valve cage, the valve core is provided with a cylindrical valve core inner cavity with an opening at the bottom, the throttling element is sleeved in the valve core inner cavity, and the axially movable valve core is sealed on different throttling holes of the throttling element by the cylindrical side wall of the axially movable valve core; the bottom end face of the cylindrical side wall of the valve core and the circular ring surface of the valve seat form a sealing surface. The invention separates the sealing surface from the throttling area in the whole adjusting process, and can greatly prolong the service life of the adjusting valve on the basis of ensuring the adjusting performance of the valve.
Description
Technical field
The present invention relates to High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve, is more particularly that one can be applied in High Pressure Difference gas, fixed double phase flow medium, carry out pressure controlled valve to system.
Background technique
In dry coal powder pressure gasifying technique, need modulating valve to carry out intermittent regulation to the pressure of coal head tank, because modulating valve upstream pressure is coal head tank pressure, its value reaches 5MPa, and downstream is directly emptying, and therefore pressure reduction is very large, regulates difficulty large; On the other hand, because medium is the gas-particle two-phase flow medium that gas carries coal dust, the strong row for modulating valve internals wash away the working life that highly shortened modulating valve.
Summary of the invention
The present invention is the deficiency for avoiding existing for above-mentioned prior art, one is provided to be particularly suited for being applied in High Pressure Difference, gas-particle two-phase flow medium and to carry out pressure controlled High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve, decompression noise reduction is carried out to medium in the basis ensureing valve regulated performance, prolongation modulating valve working life.
The present invention is that technical solution problem adopts following technological scheme:
The structural feature of High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve of the present invention is:
In the inner chamber formed by valve gap and valve body, arrange valve cage, described valve cage is evenly equipped with flowing hole, the flowing hole of medium on valve cage from valve inlet enters body cavity;
In valve body, be fixedly installed throttle element, be connected at the tubular inner chamber of described throttle element with valve outlet port, the barrel of described throttle element is disposed with aperture from top to bottom vertically by large and little throttle orifice;
The spool that can move axially is arranged in valve cage, and described spool has the uncovered tubular valve core cavity in bottom, and described throttle element is linked in described valve core cavity, and the spool moved axially is enclosed on the different throttle orifice of throttle element with its cylindrical sidewall; Sealing surface is formed with the toroidal surface of the bottom end face of the cylindrical sidewall of described spool and valve seat.
The structural feature of High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve of the present invention is also:
The barrel of described throttle element is disposed with aperture from top to bottom vertically by large and little throttle orifice.
Described throttle element is for material with WC cemented carbide.
The flowing hole be arranged on described valve cage is the Lower Half being distributed in described valve cage, is in the height region corresponding to throttle element.
The present invention is reduced pressure to medium by valve cage, is regulated valve by spool and throttle element, realizes valve seal by spool and valve seat, and compared with the prior art, beneficial effect of the present invention is embodied in:
1, in the present invention, the sealing surface of spool and bottom valve seat separates with the throttleng surface on throttle element, makes valve core sealed cover from the impact of high speed flow medium, effectively can alleviate the damage of valve core sealed cover.
2, the present invention is in adjustment process, because sealing surface of seat is away from throttling band, can effectively prevent from losing efficacy because sealing surface of seat damages the valve seal caused.
3, the present invention bears washing away of medium with throttle element, therefore significantly reduces the damage for spool and sealing surface of seat, and throttle element adopts WC Hardmetal materials greatly can improve working life, and product maintenance only need change throttle element.
4, the present invention realizes adjustment to flow because valve moves by spool the circulation area changing throttle orifice in throttle element, regulated by macropore during large discharge, regulated by less hole during small flow, regulate by minimum aperture during fine setting, highi degree of accuracy can be reached and control.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is closed condition schematic diagram of the present invention;
Fig. 3 is spool and bottom valve seat sealing surface structure schematic diagram in the present invention;
Fig. 4 a and Fig. 4 b is respectively throttle element master in the present invention and looks and side-looking structural representation;
Fig. 5 a and Fig. 5 b is respectively bottom valve seat master in the present invention and looks and plan structure schematic diagram.
Number in the figure: 1 valve body, valve seat bottom 2,3 throttle elements, 3a large discharge adjustment hole, 3b small flow adjustment hole, 3c micrometeor adjustment hole, 4 valve cages, 5 spools, 6 valve gaps.
Embodiment
See Fig. 1, the structural feature of the present embodiment High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve is:
In the inner chamber formed by valve gap 6 and valve body 1, arrange valve cage 4, valve cage 4 is evenly equipped with flowing hole, the flowing hole of medium on valve cage 4 from valve inlet enters body cavity; Medium can reach the object of decompression effectively by the flowing hole on valve cage 4.
In valve body 1, be fixedly installed throttle element 3, be connected at the tubular inner chamber of throttle element 3 with valve outlet port, the barrel of throttle element 3 is disposed with aperture from top to bottom vertically by large and little throttle orifice;
The spool 5 that can move axially is arranged in valve cage 4, and spool 5 has the uncovered tubular valve core cavity in bottom, and throttle element 3 is linked in valve core cavity, and the spool 5 moved axially is the throttle orifices closing throttle element 3 with its cylindrical sidewall.
As shown in Fig. 3, Fig. 5 a and Fig. 5 b, form sealing surface with the toroidal surface of the bottom end face of the cylindrical sidewall of spool 5 and bottom valve seat 2 in the present embodiment, because sealing surface is away from throttleng surface, effectively the scouring force of medium is transferred to throttleng surface, avoid the damage to spool and bottom valve seat.
As shown in figures 4 a and 4b, throttle element 3 is for material with WC cemented carbide, to improve the durability of throttle element, in the present embodiment in throttle element 3 arrange throttle orifice on different heights three groups split, one group, top is wide-aperture large discharge adjustment hole 3a, one group, middle part is the small flow adjustment hole 3b of small aperture, and one group, bottom is the micrometeor adjustment hole 3c of minimum-value aperture.
The flowing hole be arranged on valve cage 4 is the Lower Half being distributed in described valve cage 4, is in the height region corresponding to throttle element 3.
Figure 1 shows that modulating valve is full-gear, medium enters from the valve inlet of valve body 1 and carries out body cavity by the flowing hole valve cage 4, throttle orifice again in throttle element 3 enters the tubular inner chamber of throttle element, finally flow out at the valve outlet port of valve body 1, all throttle orifices now in throttle element all have overcurrent.
Spool 5 is regulated the different opening that can obtain modulating valve on the relative altitude position different from throttle element 3.
Figure 2 shows that modulating valve is closed state, now contact with the toroidal surface of the bottom end face of the cylindrical sidewall of spool 5 with bottom valve seat 2, form sealing, modulating valve cuts out.
The present invention is in adjustment process; the sealing surface of its spool and bottom valve seat is all away from medium throttling band; rely on and sacrifice the impact of sealing surface from high speed flow that throttle element throttle orifice protects spool and bottom valve seat, be particularly suitable for frequent keying, the technique of intermittent regulation.
Claims (3)
1. a High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve, is characterized in that:
In the inner chamber formed by valve gap (6) and valve body (1), valve cage (4) is set, described valve cage (4) is evenly equipped with flowing hole, and the flowing hole of medium on valve cage (4) from valve inlet enters body cavity;
Throttle element (3) is fixedly installed in valve body (1), be connected with valve outlet port at the tubular inner chamber of described throttle element (3), the barrel of described throttle element (3) is disposed with aperture from top to bottom vertically by large and little throttle orifice;
The spool (5) that can move axially is arranged in valve cage (4), described spool (5) has the uncovered tubular valve core cavity in bottom, described throttle element (3) is linked in described valve core cavity, and the spool (5) moved axially is enclosed on the different throttle orifice of throttle element (3) with its cylindrical sidewall; Sealing surface is formed with the toroidal surface of the bottom end face of the cylindrical sidewall of described spool (5) and valve seat (2).
2. High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve according to claim 1, is characterized in that: described throttle element (3) is for material with WC cemented carbide.
3. High Pressure Difference Dual-Phrase Distribution of Gas olid modulating valve according to claim 1, it is characterized in that: the flowing hole be arranged on described valve cage (4) is the Lower Half being distributed in described valve cage (4), be in the height region corresponding to throttle element (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310354617.9A CN103423469B (en) | 2013-08-15 | 2013-08-15 | High-pressure-difference gas-solid two-phase flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310354617.9A CN103423469B (en) | 2013-08-15 | 2013-08-15 | High-pressure-difference gas-solid two-phase flow regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103423469A CN103423469A (en) | 2013-12-04 |
| CN103423469B true CN103423469B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310354617.9A Active CN103423469B (en) | 2013-08-15 | 2013-08-15 | High-pressure-difference gas-solid two-phase flow regulating valve |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224572B (en) * | 2016-09-20 | 2018-07-27 | 合肥通用机械研究院有限公司 | Double spool double-sealing face regulating valve |
| KR102474379B1 (en) * | 2018-04-18 | 2022-12-05 | 현대자동차 주식회사 | Valve device |
| CN110440013A (en) * | 2018-05-02 | 2019-11-12 | 岳民学 | Lower resistance shut-off valve (dangerous material use) |
| CN109099621A (en) * | 2018-09-04 | 2018-12-28 | 珠海格力电器股份有限公司 | Throttling device and air conditioner |
| CN111379889B (en) * | 2018-12-28 | 2022-07-12 | 浙江三花制冷集团有限公司 | Flow control valve and method of assembling the same |
| CN111379873B (en) * | 2018-12-28 | 2022-07-29 | 浙江三花制冷集团有限公司 | Flow control valve |
| CN112555428B (en) * | 2020-12-15 | 2024-09-06 | 合肥通用机械研究院有限公司 | Gradually-expanding neck ball belly type black water angle valve |
| CN118149151B (en) * | 2024-05-09 | 2024-09-24 | 华能济南黄台发电有限公司 | Small-flow overload-prevention multi-valve cage regulating valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190205Y (en) * | 1994-06-03 | 1995-02-22 | 曾祥炜 | Shutoff valve |
| JPH0893964A (en) * | 1994-09-20 | 1996-04-12 | Yamatake Honeywell Co Ltd | Valve device |
| CN201671596U (en) * | 2010-05-31 | 2010-12-15 | 刘子良 | Outer sleeve corbula-type throttle valve |
| CN202371283U (en) * | 2011-12-23 | 2012-08-08 | 上海希希埃动力控制设备有限公司 | Cage hood for pressure and temperature reducing valve |
-
2013
- 2013-08-15 CN CN201310354617.9A patent/CN103423469B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190205Y (en) * | 1994-06-03 | 1995-02-22 | 曾祥炜 | Shutoff valve |
| JPH0893964A (en) * | 1994-09-20 | 1996-04-12 | Yamatake Honeywell Co Ltd | Valve device |
| CN201671596U (en) * | 2010-05-31 | 2010-12-15 | 刘子良 | Outer sleeve corbula-type throttle valve |
| CN202371283U (en) * | 2011-12-23 | 2012-08-08 | 上海希希埃动力控制设备有限公司 | Cage hood for pressure and temperature reducing valve |
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| Publication number | Publication date |
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| CN103423469A (en) | 2013-12-04 |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee before: HEFEI GENERAL MACHINERY Research Institute |