CN102537392A - Pilot operated gate valve - Google Patents
Pilot operated gate valve Download PDFInfo
- Publication number
- CN102537392A CN102537392A CN2012100564486A CN201210056448A CN102537392A CN 102537392 A CN102537392 A CN 102537392A CN 2012100564486 A CN2012100564486 A CN 2012100564486A CN 201210056448 A CN201210056448 A CN 201210056448A CN 102537392 A CN102537392 A CN 102537392A
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- little
- big
- valve seat
- 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.)
- Granted
Links
Images
Landscapes
- Sliding Valves (AREA)
Abstract
The invention discloses a pilot operated gate valve, which adopts an ordinary gate valve structure including as a valve body, a gate plate, a valve seat, a valve cap and a valve rod, wherein the gate plate is a pressure balancing gate plate assembly that includes a small gate plate bracket, a big gate plate, a small valve seat, a balancing gate plate, a seal ring and pins for connecting all the components. The small gate plate bracket can be driven to move upward or downward by rotating the hand wheel, so as to balance the pressure at the two ends of the valve, and then reduce the torque for opening; and the big gate plate can be driven to move upward or downward by continuing rotating the hand wheel, so as to open or close the valve. The pilot operated gate valve has the advantages of small operating torque, small size, long service life and low cost.
Description
Technical field
The present invention relates to a kind of gate valve, particularly a kind of leading type gate valve of combining by pressure balancing structure and common gate valve.
Background technique
Common valve entrance point and outlet end when switch have certain pressure reduction, and pressure reduction is bigger under hyperbaric environment.
In the gate valve of heavy caliber high pressure specification, for can switch, adopt gear box structure, screw structure, add the balancing pole structure and come province to reduce operational torque, or be employed in hydraulic pressure and drive flashboard with pneumatic cylinder and move realization switch purpose.No matter be to adopt above-mentioned the sort of structure itself the friction between flashboard and the valve seat not to be reduced.And the valve of said structure also has following shortcoming: volume is big, and the wearing and tearing of flashboard valve seat are many, and stem diameter is big, and valve is short working life, and cost is higher.
Summary of the invention
Goal of the invention of the present invention is in order to overcome the shortcoming in the above-mentioned background technology, a kind of leading type gate valve of heavy caliber high pressure specification to be provided.
Technological scheme of the present invention is: a kind of leading type gate valve; Comprise common common gate valve structures such as valve body, flashboard, valve seat, valve gap, valve rod, wherein said flashboard is the pressure balance flashboard assembly, and this assembly comprises little flashboard frame, big damper, little valve seat, balance flashboard, seal ring and the pin that connects each member; Its medium and small flashboard chord position is in the neutral position; Little flashboard frame is provided with valve-rod cavity, respectively is provided with the flashboard passage about little flashboard frame, and two balance flashboards can move forward and backward through this flashboard passage; Before and after the little flashboard frame peace weighlock plate and about also symmetry be provided with little valve seat, big sealing ring, small sealing ring, big damper successively; Big damper is provided with the valve seat mouth, and little valve seat, big sealing ring, small sealing ring are located on this valve seat mouth, and the import and export through hole joint of former and later two big dampers also is provided with O type circle.
The invention has the beneficial effects as follows: through forwarding handwheel to, can drive little flashboard frame earlier and move up or down, can make valve pressure at two ends balance, thereby reduce the moment of torsion of opening.Continue to forward to handwheel then, can drive big damper and move up or down, thereby open or throttle down.The present invention has that operational torque is little, and volume is little, long service life, the advantage that cost is few.
Description of drawings
Fig. 1 is this leading type gate valve example structure figure;
Fig. 2 is the A-A face sectional view of Fig. 1;
Fig. 3 is the External view of pressure balance flashboard assembly;
Fig. 4 is the A-A face sectional view of Fig. 3;
Fig. 5 is the B-B face sectional view of Fig. 3;
Fig. 6 is the C-C face sectional view of Fig. 3;
Fig. 7 is the G-G face sectional view of Fig. 3;
Fig. 8 is a leading type gate valve exploded view;
Wherein: 1, valve body, 2, flashboard assembly, 3, valve rod, 4, valve gap, 5, valve seat, 6 dunnages, 21, little flashboard frame, 22, big damper, 23, O type circle, 24, pin, 25, little valve seat, 26, the balance flashboard, 27, big sealing ring, 28, small sealing ring.
Embodiment
Leading type gate valve as shown in Figure 1 comprises valve body (1), flashboard, valve seat (5), valve gap (4), valve rod (3), dunnage common common gate valve structures such as (6), and wherein said flashboard is pressure balance flashboard assembly (2).This flashboard assembly such as Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8 be symmetric design; Comprise little flashboard frame (21), big damper (22), little valve seat (25), balance flashboard (26), seal ring and the pin (24) that connects each member; Its medium and small flashboard chord position is in the neutral position; Little flashboard frame is provided with valve-rod cavity, respectively is provided with the flashboard passage about little flashboard frame, and two balance flashboards can move forward and backward through this flashboard passage; Before and after the little flashboard frame peace weighlock plate and about also symmetry be provided with little valve seat, big sealing ring, small sealing ring, big damper successively; Big damper is provided with the valve seat mouth, and little valve seat, big sealing ring, small sealing ring are located on this valve seat mouth, and the import and export through hole joint of former and later two big dampers also is provided with O type circle.
The working principle of this leading type gate valve is:
1, opens gate valve: rotate counterclockwise handwheel → drive valve rod and rotate counterclockwise → drive the little flashboard frame little flashboard that moves up → drive and be moved upward to open position → continue to rotate counterclockwise handwheel → drive big damper to be moved upward to open position.
2, closing gate valve: clockwise rotate handwheel → drive valve rod and clockwise rotate → drive little flashboard frame and move down → drive little flashboard and be moved downward to closed position → continue to clockwise rotate handwheel → drive big damper to move to closed position to for a short time.
Claims (1)
1. leading type gate valve; Comprise common common gate valve structures such as valve body, flashboard, valve seat, valve gap, valve rod, it is characterized in that described flashboard is the pressure balance flashboard assembly, this assembly comprises little flashboard frame, big damper, little valve seat, balance flashboard, seal ring and the pin that connects each member; Its medium and small flashboard chord position is in the neutral position; Little flashboard frame is provided with valve-rod cavity, respectively is provided with the flashboard passage about little flashboard frame, and two balance flashboards can move forward and backward through this flashboard passage; Before and after the little flashboard frame peace weighlock plate and about also symmetry be provided with little valve seat, big sealing ring, small sealing ring, big damper successively; Big damper is provided with the valve seat mouth, and little valve seat, big sealing ring, small sealing ring are located on this valve seat mouth, and the import and export through hole joint of former and later two big dampers also is provided with O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100564486A CN102537392B (en) | 2012-03-06 | 2012-03-06 | Pilot operated gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100564486A CN102537392B (en) | 2012-03-06 | 2012-03-06 | Pilot operated gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102537392A true CN102537392A (en) | 2012-07-04 |
| CN102537392B CN102537392B (en) | 2013-03-20 |
Family
ID=46345027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100564486A Active CN102537392B (en) | 2012-03-06 | 2012-03-06 | Pilot operated gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102537392B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900858A (en) * | 2012-10-19 | 2013-01-30 | 瑞安市良精石化机械厂 | Pressure relief type pipeline quick opening and closing device |
| CN103644315A (en) * | 2013-12-04 | 2014-03-19 | 淮北新祥液压机电成套设备制造有限公司 | Long-life knife gate valve |
| CN104534114A (en) * | 2015-01-26 | 2015-04-22 | 浙江德卡控制阀仪表有限公司 | Pilot bidirectional double-disc high-pressure gate valve |
| WO2019019127A1 (en) * | 2017-07-28 | 2019-01-31 | 江苏政轩石油机械股份有限公司 | Combined low-torque flat gate valve |
| CN111022675A (en) * | 2019-12-22 | 2020-04-17 | 江苏政轩石油机械股份有限公司 | High-pressure large-drift-diameter small-torque manual flat valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166879C (en) * | 2001-12-11 | 2004-09-15 | 哈尔滨工程大学 | Magnetic gate valve boosted by liquid pressure difference |
| CN201028020Y (en) * | 2007-05-24 | 2008-02-27 | 朱力艳 | Pilot-operated high-pressure sluice valve |
| CH700776A2 (en) * | 2009-04-02 | 2010-10-15 | Sistag Absperrtechnik | Slide valves, in particular leading to the closing of a media line. |
| CN202469034U (en) * | 2012-03-06 | 2012-10-03 | 苏州道森钻采设备股份有限公司 | Pilot-operated gate valve |
-
2012
- 2012-03-06 CN CN2012100564486A patent/CN102537392B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166879C (en) * | 2001-12-11 | 2004-09-15 | 哈尔滨工程大学 | Magnetic gate valve boosted by liquid pressure difference |
| CN201028020Y (en) * | 2007-05-24 | 2008-02-27 | 朱力艳 | Pilot-operated high-pressure sluice valve |
| CH700776A2 (en) * | 2009-04-02 | 2010-10-15 | Sistag Absperrtechnik | Slide valves, in particular leading to the closing of a media line. |
| CN202469034U (en) * | 2012-03-06 | 2012-10-03 | 苏州道森钻采设备股份有限公司 | Pilot-operated gate valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900858A (en) * | 2012-10-19 | 2013-01-30 | 瑞安市良精石化机械厂 | Pressure relief type pipeline quick opening and closing device |
| CN103644315A (en) * | 2013-12-04 | 2014-03-19 | 淮北新祥液压机电成套设备制造有限公司 | Long-life knife gate valve |
| CN103644315B (en) * | 2013-12-04 | 2016-02-17 | 淮北新祥液压机电成套设备制造有限公司 | A kind of long-life knife gate valve |
| CN104534114A (en) * | 2015-01-26 | 2015-04-22 | 浙江德卡控制阀仪表有限公司 | Pilot bidirectional double-disc high-pressure gate valve |
| WO2019019127A1 (en) * | 2017-07-28 | 2019-01-31 | 江苏政轩石油机械股份有限公司 | Combined low-torque flat gate valve |
| CN111022675A (en) * | 2019-12-22 | 2020-04-17 | 江苏政轩石油机械股份有限公司 | High-pressure large-drift-diameter small-torque manual flat valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102537392B (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102537392B (en) | Pilot operated gate valve | |
| CN105042093B (en) | The valve of adjustable opening and closing frequency | |
| CN201593630U (en) | Double-disc check valve | |
| CN102434527B (en) | Hydraulic cylinder | |
| CN203627868U (en) | Novel distraction spherical intercepting valve | |
| CN202469034U (en) | Pilot-operated gate valve | |
| CN101737503B (en) | Self-balancing stop valve with piston type valve core and hidden rod | |
| CN205781249U (en) | Pneumatic rotary check valve apparatus | |
| CN204922046U (en) | Guide's formula high temperature stop valve | |
| CN103244746A (en) | Self-power adjustable valve slow-closing device | |
| CN108644433B (en) | High-row check valve | |
| CN102478120A (en) | Rotary valve driving device | |
| CN101265983A (en) | Multi-functional valve | |
| CN203322376U (en) | Electrohydraulic control three-way valve easy to seal | |
| CN204083282U (en) | One is applicable to the high voltage bearing stop valve of super large caliber | |
| CN109780228A (en) | A kind of butterfly valve carrying adjustable internal bypass | |
| CN202081763U (en) | Floor spring with simple structure | |
| CN205859304U (en) | A kind of compact hand gear for pneumatic actuator | |
| CN204573137U (en) | A kind of pneumatic expansion formula butterfly valve | |
| CN203809714U (en) | Three-rod switch butterfly valve | |
| CN105465392B (en) | A kind of valve of quick response | |
| CN203223628U (en) | Self-reliance type adjustable valve slowly-closing device | |
| CN207814537U (en) | A kind of hard sealing compositive valve atmospheric control and hard sealing compositive valve | |
| CN202708145U (en) | Spring stretching type parallel double-gate valve | |
| CN102425678A (en) | Mobile sealed 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230313 Address after: No. 16, Xihenggang Street, Yangchenghu Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215000 Patentee after: Suzhou Dawson Drilling and Production Equipment Co.,Ltd. Address before: 215137 Xingtai Road, Taiping Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU DOUSON DRILLING & PRODUCTION EQUIPMENT Co.,Ltd. |