CN104089055A - Supercritical large-caliber two-direction buffer control type check valve - Google Patents
Supercritical large-caliber two-direction buffer control type check valve Download PDFInfo
- Publication number
- CN104089055A CN104089055A CN201410309670.1A CN201410309670A CN104089055A CN 104089055 A CN104089055 A CN 104089055A CN 201410309670 A CN201410309670 A CN 201410309670A CN 104089055 A CN104089055 A CN 104089055A
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- valve
- valve body
- bearing pin
- flap
- overcritical
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the field of check valves, in particular to a supercritical large-caliber two-direction buffer control type check valve. The check valve is mainly of a large-caliber two-direction buffer control type structure. Manual control is adopted at one end of the valve, and a pneumatic or hydraulic control device is adopted at the other end of the valve. The problem of friction of a sealing face between a valve clack and a valve seat is solved, the effect of buffering starting is achieved, and the service life of the valve is prolonged. The supercritical large-caliber two-direction buffer control type check valve has the advantages that the valve material which is originally carbon steel and alloy steel is changed into supercritical steel C12A now, the caliber which is originally below 20 cun is increased now to reach 32 cun, the pressure which is originally below 1500 LB is increased now to reach 2500 LB, two-direction buffer control is achieved due to the facts that manual control is adopted at one end of the valve and the pneumatic or hydraulic control device is adopted at the other end of the valve, the sealing face of the valve is free of leakage, the anti-cavitation and anti-scouring capability of the valve clack and the valve seat is improved, the whole performance of the valve is improved, and the service life of the valve is prolonged.
Description
Technical field
The present invention relates to field of check valves, be specifically related to a kind of overcritical heavy caliber bidirectional buffering control formula non-return flap.
Background technique
Traditional non-return flap is mainly to revolve to open structure, and control media flows backwards.Valve closing member flap coordinates with the bearing pin being fixed on pressure part valve body by link rocking arm, and flap rotates in medium centered by bearing pin, with the object that reaches valve opening and close.Valve flow resistance is large, and sealability is unstable, produces noise, and working life is short, need to often change, and causes the wasting of resources very serious.
In order to reduce energy consumption, improve generating efficiency, power generating equipment just develops towards the brand new of maximization, high parameter, high-performance, low energy consumption, environmental protection.
Summary of the invention
In order to solve foregoing invention problem, the present invention proposes a kind of overcritical heavy caliber bidirectional buffering control formula non-return flap, valve mainly adopts heavy caliber, bidirectional buffering control formula structure, valve one end adopts manually and controls, the other end adopts pneumatic or hydraulic control device, solve the sealing surface friction problem between flap and valve seat, arrive the effect of buffer starting, extended the working life of valve.
In order to reach foregoing invention object, the present invention proposes technological scheme:
Overcritical heavy caliber bidirectional buffering control formula non-return flap, it comprises valve body, valve seat, flap, rocking bar, bearing pin, seal ring, valve gap and suspension ring, flap is equipped with in the inner side of valve body one side feed-water end, between flap and valve body, valve seat is housed, that in the middle of flap, fixes by backing plate and nut is connected in the middle of rocking bar, rocking bar upper end is fixed on valve body with pin-and-hole and by bearing pin, valve gap is equipped with in valve body upper end, between valve gap and valve body, seal ring is housed, valve gap is fixedly connected with together by screw bolt and nut with valve body, and suspension ring are housed in the middle of valve gap top; Described valve body lower end is equipped with puts residual cock; Described valve body material is supercritical steel C12A.In the middle of flap, one section has flap microcephaly, has screw thread above, and flap passes in the middle of rocking bar by flap microcephaly, and by backing plate and nut check.
Described bearing pin two ends are through valve body, between bearing pin two ends and valve body, filler is housed, and is fixed filler and bearing pin by filler pressing sleeve, pneumatic or hydraulic control device is equipped with in one end of bearing pin, the other end is equipped with manual operating device, and the middle connection flap position of bearing pin is equipped with flat key fixes.
Described manual operating device comprises fork and counter weight, and fork one end is fixedly connected on one end of bearing pin, and the other end of fork is equipped with counter weight.
Described valve body bore is 32 cun.
The working pressure of described overcritical heavy caliber bidirectional buffering control formula non-return flap is below 2500Lb.
Advantage of the present invention is valve body material: former carbon steel, alloyed steel, existing supercritical steel C12A; Bore increases: former below 20 cun, be now 32 cun; Pressure increases: below former 1500LB, be now 2500LB; Valve one end adopts manually and controls, and the other end adopts pneumatic or hydraulic control device, bidirectional buffering control; Solve valve sealing face zero seepage, improved the anti-cavitation of flap and valve seat and the ability of antiscour, improve overall performance and the working life of valve.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the local enlarged diagram of bearing pin of the present invention.
Embodiment
For the present invention is further described, introduce below in conjunction with Figure of description:
With reference to accompanying drawing 1, overcritical heavy caliber bidirectional buffering control formula non-return flap, it comprises valve body 1, valve seat 2, flap 3, rocking bar 4, bearing pin 7, seal ring 8, valve gap 9 and suspension ring 19, flap 3 is equipped with in the inner side of valve body 1 one side feed-water ends, between flap 3 and valve body 1, valve seat 2 is housed, that in the middle of flap 3, fixes by backing plate 5 and nut 6 is connected in the middle of rocking bar 4, rocking bar 4 upper ends are fixed on valve body 1 with pin-and-hole and by bearing pin 7, valve gap 9 is equipped with in valve body 1 upper end, between valve gap 9 and valve body 1, seal ring 8 is housed, valve gap 9 is fixedly connected with together with nut 11 by bolt 10 with valve body 1, valve gap is equipped with suspension ring in the middle of 9 tops, described valve body 1 lower end is equipped with and is put residual cock 17, described valve body 4 materials are supercritical steel C12A.
Described bearing pin 7 two ends are through valve body 1, between bearing pin 7 two ends and valve body 1, filler 13 is housed, and be fixed filler 13 and bearing pin 7 by filler pressing sleeve 14, pneumatic or hydraulic control device 18 is equipped with in one end of bearing pin 7, the other end is equipped with manual operating device, and it is fixing that in the middle of bearing pin 7, flat key 12 is equipped with in connection flap 3 positions.
Described manual operating device comprises fork 15 and counter weight 16, and fork 15 one end are fixedly connected on one end of bearing pin 7, and the other end of fork 15 is equipped with counter weight 16.
Described valve body 1 bore is 32 cun.
The working pressure of described overcritical heavy caliber bidirectional buffering control formula non-return flap is below 2500Lb.
Between rocking arm of the present invention and bearing pin, connect with key, valve body adopts symmetric design, and both sides are useful on installs the adpting flange of controlling, realize two-way control, valve is in use operated steadily, noise free, and also valve is subject to hardly the impact of pressure medium fluctuation in pipe-line system.Flap obtains opening degree can realize automatic control by control gear completely, the process that has a speed to slow down in the time that sealing pair will reach mated condition, so just eliminate the impact between sealing surface, reduce noise, reduce the possibility of damaging because clash between sealing surface, make valve can accomplish to open fast and close fast in the time of work, efficiency and the rapid-action ability of whole system operation are improved, greatly improve the working life of valve, reduced the cost of system operation.
Claims (5)
1. overcritical heavy caliber bidirectional buffering control formula non-return flap, it comprises valve body, valve seat, flap, rocking bar, bearing pin, seal ring, valve gap and suspension ring, flap is equipped with in the inner side that it is characterized in that valve body one side feed-water end, between flap and valve body, valve seat is housed, that in the middle of flap, fixes by backing plate and nut is connected in the middle of rocking bar, rocking bar upper end is fixed on valve body with pin-and-hole and by bearing pin, valve gap is equipped with in valve body upper end, between valve gap and valve body, seal ring is housed, valve gap is fixedly connected with together by screw bolt and nut with valve body, and suspension ring are housed in the middle of valve gap top; Described valve body lower end is equipped with puts residual cock; Described valve body material is supercritical steel C12A.
2. overcritical heavy caliber bidirectional buffering control formula non-return flap according to claim 1, it is characterized in that described bearing pin two ends are through valve body, between bearing pin two ends and valve body, filler is housed, and be fixed filler and bearing pin by filler pressing sleeve, pneumatic or hydraulic control device is equipped with in one end of bearing pin, the other end is equipped with manual operating device, and the middle connection flap position of bearing pin is equipped with flat key fixes.
3. overcritical heavy caliber bidirectional buffering control formula non-return flap according to claim 2, is characterized in that manual operating device comprises fork and counter weight, and fork one end is fixedly connected on one end of bearing pin, and the other end of fork is equipped with counter weight.
4. overcritical heavy caliber bidirectional buffering control formula non-return flap according to claim 1, is characterized in that described valve body bore is 32 cun.
5. overcritical heavy caliber bidirectional buffering control formula non-return flap according to claim 1, is characterized in that the working pressure of described overcritical heavy caliber bidirectional buffering control formula non-return flap is below 2500Lb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309670.1A CN104089055A (en) | 2014-07-02 | 2014-07-02 | Supercritical large-caliber two-direction buffer control type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309670.1A CN104089055A (en) | 2014-07-02 | 2014-07-02 | Supercritical large-caliber two-direction buffer control type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104089055A true CN104089055A (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410309670.1A Pending CN104089055A (en) | 2014-07-02 | 2014-07-02 | Supercritical large-caliber two-direction buffer control type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104089055A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909835A (en) * | 2016-06-11 | 2016-08-31 | 朱志强 | Unpowered safety valve for pipeline emergency flow limiting |
| CN106523745A (en) * | 2016-12-30 | 2017-03-22 | 广东申菱环境系统股份有限公司 | Low-leakage high-pressure check valve |
| WO2018053664A1 (en) * | 2016-09-22 | 2018-03-29 | 沈静静 | Supercritical high-temperature high-pressure double-flanged butterfly sealing ring clamped check valve |
| CN112728200A (en) * | 2021-01-07 | 2021-04-30 | 南通大学 | Control mechanism and control method capable of quickly cutting off fluid pipeline |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002122255A (en) * | 2000-10-13 | 2002-04-26 | Kubota Corp | Counterweight mechanism of check valve |
| CN201162863Y (en) * | 2008-03-04 | 2008-12-10 | 南通国电电站阀门有限公司 | Large-caliber bidirectional-control check valve |
| CN102808977A (en) * | 2012-08-17 | 2012-12-05 | 大连大高阀门股份有限公司 | High exhaust check valve of critical and supercritical thermal power generating set valve |
| CN202646801U (en) * | 2012-05-28 | 2013-01-02 | 中核苏阀科技实业股份有限公司 | High-flow check valve |
| CN203604728U (en) * | 2013-12-03 | 2014-05-21 | 南通市电站阀门有限公司 | Ultra-large-calibre forged steel check valve of main water supply system |
-
2014
- 2014-07-02 CN CN201410309670.1A patent/CN104089055A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002122255A (en) * | 2000-10-13 | 2002-04-26 | Kubota Corp | Counterweight mechanism of check valve |
| CN201162863Y (en) * | 2008-03-04 | 2008-12-10 | 南通国电电站阀门有限公司 | Large-caliber bidirectional-control check valve |
| CN202646801U (en) * | 2012-05-28 | 2013-01-02 | 中核苏阀科技实业股份有限公司 | High-flow check valve |
| CN102808977A (en) * | 2012-08-17 | 2012-12-05 | 大连大高阀门股份有限公司 | High exhaust check valve of critical and supercritical thermal power generating set valve |
| CN203604728U (en) * | 2013-12-03 | 2014-05-21 | 南通市电站阀门有限公司 | Ultra-large-calibre forged steel check valve of main water supply system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909835A (en) * | 2016-06-11 | 2016-08-31 | 朱志强 | Unpowered safety valve for pipeline emergency flow limiting |
| WO2018053664A1 (en) * | 2016-09-22 | 2018-03-29 | 沈静静 | Supercritical high-temperature high-pressure double-flanged butterfly sealing ring clamped check valve |
| CN106523745A (en) * | 2016-12-30 | 2017-03-22 | 广东申菱环境系统股份有限公司 | Low-leakage high-pressure check valve |
| CN112728200A (en) * | 2021-01-07 | 2021-04-30 | 南通大学 | Control mechanism and control method capable of quickly cutting off fluid pipeline |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |
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| RJ01 | Rejection of invention patent application after publication |