CN102943886B - Gate valve with function of reducing cavitation damage of valve plate - Google Patents
Gate valve with function of reducing cavitation damage of valve plate Download PDFInfo
- Publication number
- CN102943886B CN102943886B CN 201210481440 CN201210481440A CN102943886B CN 102943886 B CN102943886 B CN 102943886B CN 201210481440 CN201210481440 CN 201210481440 CN 201210481440 A CN201210481440 A CN 201210481440A CN 102943886 B CN102943886 B CN 102943886B
- Authority
- CN
- China
- Prior art keywords
- valve
- broach
- gate
- comb teeth
- valve body
- 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
Images
Landscapes
- Sliding Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a gate valve with a function of reducing cavitation damage of a valve plate. The gate valve comprises a drive mechanism, a valve rod, a support, a valve cover, a valve body, gate plates, a sealing face, a coupler and a wedge block. A drive mechanism rotary shaft drives two gate plates in the valve cover and the valve body to vertical move through the coupler and the valve rod, the inner lateral face of the valve body is welded with the sealing face, and the wedge block and the valve rod are coaxially installed on the lower bottom surface of the valve body. The gate valve is characterized in that the lateral faces of the lower portions of the gate plates are provided with inner comb teeth and outer comb teeth, the front inner comb teeth, the front outer comb teeth, the back inner comb teeth and the back outer comb teeth are distributed in a staggered mode, and the thickness of the inner comb teeth is twice of that of the outer inner comb teeth. The gate valve is provided with the two gate plates, the gate plates are contacted with the sealing face when the valve is closed and opened, and good sealing performance of the sealing face and the gate plates is achieved through tensile force of the wedge block. In addition, the opening degree is small, fluid plays the flow-shunting and pressure-reducing effect and reduces front and back pressure drop of the gate plates when passes through the comb teeth on the gate plates, and a cavitation phenomenon of the valve is decreased.
Description
Technical field
The present invention relates to a kind of gate valve, especially relate to a kind of gate valve with the valve plate that reduces cavitation damage.
Background technique
In various types of valves, gate valve is be most widely used a kind of.Gate valve refers to that closure member (flashboard) moves along the Vertical direction of passage axis, reaches the valve of opening or closing purpose.In pipeline, mainly as connecting or block medium, use.It is smaller that gate valve has fluid resistance, safe and reliable; When opening or closing, required moment is less; Can use on the looped network pipeline mobile to both direction at medium; During standard-sized sheet, sealing surface is subject to the erosion of working medium less than stop valve; Body is fairly simple, is easy to casting and processing; The advantages such as structure length is smaller.
In oil, gas exploitation course and on the transfer line of oil, rock gas, product oil, in hydraulic engineering, all be widely used.
Simultaneously, gate valve also have some such as boundary dimension and Lift larger; The relative wear of sealing surface is larger, easily causes frictionally damage; The shortcoming such as during little aperture noise is larger.Especially when the little aperture of gate valve, because flow-passing surface is less, cause medium to cross Flow Velocity larger, the local jet that forms, can cause cavitation phenomenon, causes the damage of flashboard, thereby reduce the life-span of valve.At needs, often open and close, and operating mode rugged environment comparatively, in high temperature and high pressure condition, the damage of cavitation is just even more serious, and the use of valve has been caused safely to great challenge.And in use, cavitation phenomenon is the main factor that causes noise.Therefore, for a kind of gate valve that can effectively reduce cavitation phenomenon noise decrease of development, just be of great practical significance.
Summary of the invention
In order to overcome the deficiency of gate valve in background technique, the object of the present invention is to provide a kind of gate valve with the flashboard that reduces cavitation damage, thereby play reduction valve cavitation to a certain extent, noise decrease, improve the valve effect in working life.
The technical solution used in the present invention is:
The present invention includes driving mechanism, valve rod, support, valve gap, valve body, flashboard, sealing surface, coupling and wedge-shaped blocks; The driving mechanism rotating shaft drives two flashboards that are arranged in valve gap and valve body and moves up and down through coupling, valve rod, and the valve body inner side surface is welded with sealing surface, and wedge-shaped blocks and valve rod coaxially are arranged on the valve body bottom surface; It is characterized in that: the flashboard lower side is equipped with interior broach and outer broach, before and after flashboard in broach and outer broach be interspersed, interior broach thickness is outer broach 2 times.
Described interior broach and outer broach are all by circumferentially distributing, broach is the quadrant with radian, the fan-shaped angle of outer broach is 6-8 °, interval 6-8 °, interior broach angle is 8-10 °, interval 8-10 °, interior broach and outer broach equidistant placement, interior broach and outer broach height are 8-10% valve latus rectum, and the broach fitting limit is 60 °, along stem shaft to symmetrical.
The beneficial effect that the present invention has is:
The present invention has the function of double-flashboard gate valve, valve close with the Open valve process in, valve plate by wedge-shaped blocks, interacts with two flashboards, reaches seal pressure, realizes good sealability.In addition, fluid, through the comb structure effect on valve plate, can effectively reduce Flow Velocity, thereby reduced valve front and back pressure reduction, and main purpose is to reach to reduce the purpose that the valve cavitation phenomenon produces.
In addition, during due to little aperture, the medium velocity of the flashboard of flowing through reduces, by noise and the cavitation damage effectively reduced in the valve using process.
The present invention can meet the demand in the fields such as oil, chemical industry and water conservancy.
The accompanying drawing explanation
Fig. 1 is the structural representation of gate valve.
Fig. 2 is the flashboard structure schematic diagram in Fig. 1.
Fig. 3 is the side view of Fig. 2.
Fig. 4 is the perspective view of flashboard.
In figure: 1, actuator, 2, support, 3, valve gap, 4, valve rod, 5, valve body, 6, flashboard, 7, sealing surface, 8, coupling, 9, wedge-shaped blocks, 10, outer broach, 11, interior broach.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention includes driving mechanism 1, support 2, valve gap 3, valve rod 4, valve body 5, flashboard 6, sealing surface 7, coupling 8 and wedge-shaped blocks 9; The rotating shaft of driving mechanism 1 is rack-mount, and drive two flashboards that are arranged in valve gap and valve body and move up and down through coupling 8, valve rod 4, between two flashboards with valve rod by being welded together, the valve body inner side surface is welded with sealing surface 7, wedge-shaped blocks 9 coaxially is arranged on the valve body bottom surface with valve rod, tension force between the H shape double-flashboard that gate valve relies on wedge-shaped blocks 9 and two shoe brake plates 6 to form, reach sealing effect; Flashboard 6 lower side are equipped with interior broach 11 and outer broach 10, before and after flashboard in broach 11 and outer broach 10 be interspersed, interior broach thickness is outer broach 2 times.
As shown in Figure 3, Figure 4, described interior broach 11 and outer broach 10 are all by circumferentially distributing, broach is the quadrant with radian, and the fan-shaped angle of outer broach is 6-8 °, interval 6-8 °, interior broach angle is 8-10 °, interval 8-10 °, interior broach 11 and outer broach 10 equidistant placement, interior broach 11 and outer broach 10 highly are 8-10% valve latus rectum, the broach fitting limit is 60 °, along stem shaft to symmetrical.
The present invention is intended to by solve some shortcomings of modern valve in conjunction with shunting decompression and anti-cavitation erosion principle and rigid seal structure.Take full advantage of shock resistance destruction and the rigid seal reliability of structure energy of shunting decompression structure, developed the gate valve of novel shunting decompression flashboard structure, shock resistance damage capability and the noise of gate valve have been improved, increase the life-span of gate valve simultaneously, adapted to the demand of multiple special flow body medium to the gate valve performance.
working principle of the present invention is:
When valve gradually in opening process, medium is during by valve, due to 2 groups of interlaced broach, can make the medium velocity by gate valve in the situation of little aperture reduce, thereby play the shunting decompression effect.Reduce the generation of valve cavitation, thereby increased the working life of valve.
Due to the noise of valve greatly because cavitation causes, so the present invention's noise decrease to a certain extent.
The present invention is intended to solve by the shunting decompression principle some shortcomings of modern valve.Take full advantage of the shunting decompression principle of broach, developed the gate valve of the novel valve plate that reduces cavitation damage.Researched and developed corresponding novel flashboard structure, improved gate valve working life and improved the sealing reliability of gate valve, reduced to a certain extent the noise of gate valve, and adapted to the demand of multiple special flow body medium to the gate valve performance.
Claims (1)
1. the gate valve with the valve plate that reduces cavitation damage, comprise driving mechanism (1), support (2), valve gap (3), valve rod (4), valve body (5), flashboard, sealing surface (7), coupling (8) and wedge-shaped blocks (9); Driving mechanism (1) rotating shaft drives two flashboards that are arranged in valve gap and valve body and moves up and down through coupling (8), valve rod (4), and the valve body inner side surface is welded with sealing surface (7), and wedge-shaped blocks (9) coaxially is arranged on the valve body bottom surface with valve rod; It is characterized in that: flashboard (6) lower side is equipped with interior broach (11) and outer broach (10), before and after flashboard in broach (11) and outer broach (10) be interspersed, interior broach thickness is outer broach 2 times;
Described interior broach (11) and outer broach (10) are all by circumferentially distributing, broach is the quadrant with radian, the fan-shaped angle of outer broach is 6-8 °, interval 6-8 °, interior broach angle is 8-10 °, interval 8-10 °, interior broach (11) and outer broach (10) equidistant placement, interior broach (11) and outer broach (10) highly are 8-10% valve latus rectum, and the broach fitting limit is 60 °, along stem shaft to symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210481440 CN102943886B (en) | 2012-11-23 | 2012-11-23 | Gate valve with function of reducing cavitation damage of valve plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210481440 CN102943886B (en) | 2012-11-23 | 2012-11-23 | Gate valve with function of reducing cavitation damage of valve plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102943886A CN102943886A (en) | 2013-02-27 |
| CN102943886B true CN102943886B (en) | 2013-12-25 |
Family
ID=47726855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210481440 Active CN102943886B (en) | 2012-11-23 | 2012-11-23 | Gate valve with function of reducing cavitation damage of valve plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943886B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322222A (en) * | 2013-06-28 | 2013-09-25 | 无锡市伟丰印刷机械厂 | Petroleum pipeline clamping plate convenient to demount and mount |
| CN104061338B (en) * | 2014-07-05 | 2016-06-01 | 郑子林 | Sealing fine adjustment type gate valve |
| CN105738098B (en) * | 2016-04-18 | 2018-03-06 | 浙江理工大学 | A kind of easy device of novel analog gate valve abrasion |
| DE102016111169B4 (en) * | 2016-06-17 | 2019-04-25 | ZMK Technologies GmbH | Valve with erosion protection device |
| GB2566778B (en) | 2018-03-29 | 2020-01-15 | Mhwirth As | Gate valve with retainer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040668A (en) * | 1988-06-03 | 1990-03-21 | 瓦纳托姆有限公司 | Modulating valve |
| CN201487266U (en) * | 2009-05-25 | 2010-05-26 | 中核苏阀科技实业股份有限公司 | Parallel seat gate valve |
| CN201866300U (en) * | 2010-11-04 | 2011-06-15 | 天津百利展发集团有限公司 | Throttling type flat-plate gate valve |
| CN202946705U (en) * | 2012-11-23 | 2013-05-22 | 浙江理工大学 | Gate valve with valve plate capable of reducing cavitation damage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6030882A (en) * | 1983-07-27 | 1985-02-16 | Yamatake Honeywell Co Ltd | Sluice valve |
| FI88641C (en) * | 1990-07-16 | 1993-06-10 | Neles Jamesbury Oy | control valve |
| JPH1151207A (en) * | 1997-07-30 | 1999-02-26 | Kubota Corp | Gate valve provided with intake or exhaust function |
| JP2001221364A (en) * | 2000-02-04 | 2001-08-17 | Kubota Corp | Soft seal gate valve |
| KR101115749B1 (en) * | 2011-11-22 | 2012-02-20 | 최호정 | Water gate valve |
-
2012
- 2012-11-23 CN CN 201210481440 patent/CN102943886B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040668A (en) * | 1988-06-03 | 1990-03-21 | 瓦纳托姆有限公司 | Modulating valve |
| CN201487266U (en) * | 2009-05-25 | 2010-05-26 | 中核苏阀科技实业股份有限公司 | Parallel seat gate valve |
| CN201866300U (en) * | 2010-11-04 | 2011-06-15 | 天津百利展发集团有限公司 | Throttling type flat-plate gate valve |
| CN202946705U (en) * | 2012-11-23 | 2013-05-22 | 浙江理工大学 | Gate valve with valve plate capable of reducing cavitation damage |
Non-Patent Citations (4)
| Title |
|---|
| JP昭60-30882A 1985.02.16 |
| JP特开2001-221364A 2001.08.17 |
| JP特开平11-51207A 1999.02.26 |
| JP特开平4-249679A 1992.09.04 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102943886A (en) | 2013-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102943886B (en) | Gate valve with function of reducing cavitation damage of valve plate | |
| CN201593624U (en) | Three-way switching ceramic stop valve | |
| CN202946705U (en) | Gate valve with valve plate capable of reducing cavitation damage | |
| CN104197031B (en) | The multi-functional butterfly plate improved based on electric planer formula axle construction and the butterfly valve of composition thereof | |
| CN105003673A (en) | High-pressure-method welding connection type drain parallel gate valve with bypass | |
| CN202691091U (en) | Butterfly valve plate based on reduction of cavitation erosion damage | |
| CN202100821U (en) | High-performance delay-close check valve | |
| CN204477396U (en) | A kind of one-way non-return control valve unit | |
| CN207349476U (en) | A kind of wedge action valve | |
| CN201739577U (en) | Fire-fighting check valve | |
| CN210135315U (en) | Many orifices type water conservancy control valve | |
| CN203131044U (en) | Shutoff valve with valve sleeve capable of reducing cavitation damage | |
| CN202756640U (en) | Zero-friction bidirectional metal sealed butterfly valve | |
| CN111140661A (en) | Double-layer elastic all-metal sealing structure for high-temperature-resistant valve | |
| CN202768957U (en) | Double-clack slowly closing check valve | |
| CN202118287U (en) | Lifting rod type parallel double disc gate valve | |
| CN203214897U (en) | High-pressure self-sealing check valve with low flow resistance | |
| CN203131087U (en) | Multifunctional plug valve | |
| CN207195820U (en) | A kind of delayed on-off non-return valve | |
| CN202302026U (en) | Flat gate valve | |
| CN103090060B (en) | Novel butterfly type microresistance slow closing check valve | |
| CN211924914U (en) | Double-layer elastic all-metal sealing structure for high-temperature-resistant valve | |
| CN206190930U (en) | Butterfly valve with intelligence headstock gear | |
| CN205207733U (en) | Take parallel dual -gate valve in water conservancy diversion hole | |
| CN203272892U (en) | Novel check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |