CN202946705U - Gate valve with valve plate capable of reducing cavitation damage - Google Patents
Gate valve with valve plate capable of reducing cavitation damage Download PDFInfo
- Publication number
- CN202946705U CN202946705U CN 201220626077 CN201220626077U CN202946705U CN 202946705 U CN202946705 U CN 202946705U CN 201220626077 CN201220626077 CN 201220626077 CN 201220626077 U CN201220626077 U CN 201220626077U CN 202946705 U CN202946705 U CN 202946705U
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- Prior art keywords
- valve
- broach
- gate
- cavitation damage
- interior
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- Withdrawn - After Issue
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Abstract
The utility model discloses a gate valve with a valve plate capable of reducing cavitation damage. The gate valve with the valve plate capable of reducing the cavitation damage comprises a driving mechanism, a valve rod, a support, a valve cover, a valve body, gate plates, a sealing face, a coupler and a wedge block. The two gate plates installed in the valve cover and the valve body are driven to move up and down by the driving mechanism through the coupler and the valve rod, the sealing face is welded on the inner side face of the valve body, and the wedge block and the valve rod are coaxially installed on the lower bottom surface of the valve body. The gate valve with the valve plate capable of reducing the cavitation damage is characterized in that inner comb teeth and outer comb teeth are installed on the side faces of the lower portion of the gate plates, the inner comb teeth and the outer comb teeth on the front and back of the gate plates are distributed in a staggered mode, and the thickness of each inner comb tooth is twice that of each outer comb tooth. The gate valve with the valve plate capable of reducing the cavitation damage has the function of a double gate plate gate valve, in the processes of opening and closing the valve, the gate plates contact with the sealing face, through the tension of the wedge block, good tightness of the sealing face and the gate plates can be achieved, in addition, in the case of small opening, fluid passes through the comb teeth on the gate plates, the comb teeth play a role in flow dividing and pressure reducing, the pressure drop before and after the gate plates is reduced, and the phenomenon of valve cavitation damage is reduced.
Description
Technical field
The utility model relates to a kind of gate valve, especially relates 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, use mainly as connecting or block medium.It is smaller that gate valve has fluid resistance, safe and reliable; Required moment is less when opening or closing; Can use on the looped network pipeline that medium flows to both direction; During standard-sized sheet, sealing surface is subjected 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 has some larger such as boundary dimension and Lift; The relative wear of sealing surface is larger, easily causes frictionally damage; The shortcoming such as noise is larger during little aperture.Especially when the little aperture of gate valve, because flow-passing surface is less, it is larger to cause medium to cross Flow Velocity, and the local jet that forms can cause cavitation phenomenon, causes the damage of flashboard, thereby reduces the life-span of valve.Often open and close at needs, 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 great challenge.And in use, cavitation phenomenon is the main factor that causes noise.Therefore, just be of great practical significance for a kind of gate valve that can effectively reduce cavitation phenomenon and noise decrease of development.
Summary of the invention
In order to overcome the deficiency of gate valve in the background technique, the purpose of this utility model is to provide a kind of gate valve with the flashboard that reduces cavitation damage, thereby plays reduction valve cavitation to a certain degree, and noise decrease improves the valve effect in working life.
The technical solution adopted in the utility model is:
The utility model comprises 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 installed in valve gap and the valve body and moves up and down through coupling, valve rod, and the valve body inner side surface is welded with sealing surface, wedge-shaped blocks and the coaxial valve body bottom surface that is installed in of valve rod; It is characterized in that: the flashboard lower side is equipped with interior broach and outer broach, and interior broach and outer broach are interspersed before and after the flashboard, and interior broach thickness is 2 times of outer broach.
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 utlity model has is:
The utlity model has the function of double-flashboard gate valve, valve close with the Open valve process in, valve plate interacts with two flashboards by wedge-shaped blocks, reaches seal pressure, realizes good sealability.In addition, fluid can effectively reduce Flow Velocity through the comb structure effect on the valve plate, 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 owing to little aperture, the medium velocity of the flashboard of flowing through reduces, with noise and the cavitation damage that effectively reduces in the valve using process.
The utility model can satisfy the demand in the fields such as oil, chemical industry and water conservancy.
Description of drawings
Fig. 1 is the structural representation of gate valve.
Fig. 2 is the flashboard structure schematic representation among Fig. 1.
Fig. 3 is the side view of Fig. 2.
Fig. 4 is the perspective view of flashboard.
Among the 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
The utility model is described in further detail below in conjunction with drawings and Examples.
Such as Fig. 1, Fig. 2, shown in Figure 3, the utility model comprises 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 two flashboards that are installed in valve gap and the valve body through coupling 8, valve rod 4 drives move up and down, 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 and the coaxial valve body bottom surface that is installed in of valve rod, tension force between the H shape double-flashboard that gate valve dependence wedge-shaped blocks 9 and two shoe brake plates 6 form reaches sealing effect; Flashboard 6 lower side are equipped with interior broach 11 and outer broach 10, and interior broach 11 and outer broach 10 are interspersed before and after the flashboard, and interior broach thickness is 2 times of outer broach.
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 utility model 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 simultaneously the life-span of gate valve, adapted to multiple special flow body medium to the demand of gate valve performance.
Working principle of the present utility model is:
When valve gradually in the opening process, medium is during by valve, because 2 groups of interlaced broach, can make that the medium velocity by gate valve reduces in the situation of little aperture, thereby play the shunting decompression effect.Reduce the generation of valve cavitation, thereby increased the working life of valve.
Since the noise of valve greatly since cavitation cause, so the utility model noise decrease to a certain extent.
The utility model 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 multiple special flow body medium to the demand of gate valve performance.
Claims (2)
1. the gate valve with the valve plate that reduces cavitation damage comprises 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 installed in valve gap and the 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), wedge-shaped blocks (9) and the coaxial valve body bottom surface that is installed in of valve rod; It is characterized in that: flashboard (6) lower side is equipped with interior broach (11) and outer broach (10), and interior broach (11) and outer broach (10) are interspersed before and after the flashboard, and interior broach thickness is 2 times of outer broach.
2. a kind of gate valve with the valve plate that reduces cavitation damage according to claim 1, it is characterized in that: 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, the broach fitting limit is 60 °, along stem shaft to symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220626077 CN202946705U (en) | 2012-11-23 | 2012-11-23 | Gate valve with valve plate capable of reducing cavitation damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220626077 CN202946705U (en) | 2012-11-23 | 2012-11-23 | Gate valve with valve plate capable of reducing cavitation damage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946705U true CN202946705U (en) | 2013-05-22 |
Family
ID=48422407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220626077 Withdrawn - After Issue CN202946705U (en) | 2012-11-23 | 2012-11-23 | Gate valve with valve plate capable of reducing cavitation damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946705U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943886A (en) * | 2012-11-23 | 2013-02-27 | 浙江理工大学 | Gate valve with function of reducing cavitation damage of valve plate |
-
2012
- 2012-11-23 CN CN 201220626077 patent/CN202946705U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943886A (en) * | 2012-11-23 | 2013-02-27 | 浙江理工大学 | Gate valve with function of reducing cavitation damage of valve plate |
| CN102943886B (en) * | 2012-11-23 | 2013-12-25 | 浙江理工大学 | Gate valve with function of reducing cavitation damage of valve plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20131225 |
|
| RGAV | Abandon patent right to avoid regrant |