CN202349250U - Valve seat of lock hopper valve - Google Patents
Valve seat of lock hopper valve Download PDFInfo
- Publication number
- CN202349250U CN202349250U CN2011205073091U CN201120507309U CN202349250U CN 202349250 U CN202349250 U CN 202349250U CN 2011205073091 U CN2011205073091 U CN 2011205073091U CN 201120507309 U CN201120507309 U CN 201120507309U CN 202349250 U CN202349250 U CN 202349250U
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- valve seat
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Abstract
The utility model discloses a valve seat of a lock hopper valve. The valve seat is characterized in that the valve seat is tightly pressed against a spherical body through the pre-tightening force of a butterfly spring; the spherical body is fixed on a right valve body through an upper support shaft and a lower support shaft; a left valve body and the right valve body are connected mutually through a bolt; the spherical body is connected with a valve rod through a square flat groove on the lower part of the valve rod; a flexible graphite sealing ring is arranged between the valve seat and the valve body; and the both ends of the sealing surface of the valve seat are shaped as scraping and cutting blades. As the both ends of the sealing surface of the valve seat are shaped as scraping and cutting blades, during each opening or closing process of the lock hopper valve, the scrapping and cutting blades of the sealing surface of the valve seat can scrap ashes adhered on the surface of the spherical body, thereby avoiding damage to the sealing surface as ashes are brought in a space between sealing pairs, so that the sealing performance and long time operability of the lock hopper valve are ensured. The valve seat of the lock hopper valve disclosed by the utility model has the advantages that an isolation way using the flexible graphite sealing ring is adopted; the valve seat is always kept being tightly pressed against the spherical body through the pre-tightening force of the butterfly spring as well as the piston effect of an inlet medium force, thus realizing sealing; and the sealing surface of the valve seat and the flow path of the valve seat are hardened in a way of spraying chromium carbide, therefore, the erosion resistance, the wearing resistance and the corrosion resistance of the lock hopper valve are improved, and the service life of the lock hopper valve is prolonged.
Description
Technical field
The utility model relates to a kind of lock slag valve base that is used for coal gasification apparatus.
Background technique
Coal gasifying process is under the high temperature condition more than 1400 ℃, makes coal dust and oxygen carry out redox reaction, makes coal partly become coal gas.Coal gas is processed the saturated synthetic gas of water vapor and is seen off through Quench water-bath, washing, dedusting, and in the coal the unburnt carbon of part and non-flammable ash content at high temperature to form slag broken through water cooling and dregs breaker, regularly enter slag bath through locking slag system.
The periodic unlatching of the deslagging of lock slag system through lock slag valve, close and realize, because that lock slag valve technology requires is high, the position is crucial, and China adopts the unit of coal dust pressurized gasification technology in early days, has mostly selected import brand during buying lock slag valve for use.But inlet valve costs an arm and a leg, the manufacturing cycle is grown, Component supplies is untimely, maintenance is inconvenient, and also existing problems, life-span are shorter qualitatively, break down and can cause single stove to stop.
According to the operating mode characteristics of coal gasification apparatus, what lock slag valve adopted is all-pass footpath metal hard-sealing Fixed ball valve.In the design of lock slag valve, the structural design of its valve seat is again the key problem in technology of lock slag valve, and the subject matter that valve seat external now and of home make lock slag valve exists is:
1, not erosion, the wearing and tearing of anti-lime-ash of sealing surface of seat cause valve leak;
2, not erosion, wearing and tearing and the corrosion of anti-lime-ash of valve seat runner causes the valve seat body by die-cut, perforation etc., shortens working life;
3, lime-ash is bonded on the sealing surface of seat easily, causes valve can't open and close or destroy sealing surface of seat, and causes valve leak;
4, grey solid impurity particle can invade spring chamber, deposition and the spring bite was lost efficacy, thus cause valve to block, can not open and close.
The model utility content
The utility model technical problem to be solved is that a kind of have good anti-lime-ash erosion, wearing and tearing and corrosivity will be provided, than the lock slag valve base of long life.
In order to solve above technical problem, the utility model provides a kind of lock slag valve base, and valve seat leans on the pretightening force and the spheroid of butterfly spring closely to compress; Spheroid is fixed on the right valve barrel through upper and lower back shaft; Left and right valve body connects through bolt, and spheroid is connected with the cubic flat groove of valve rod through stem lower portion, when valve rod rotates 90 °; Drive spheroid and also rotate 90 °, realize the opening and closing of valve.
Be provided with Expanded graphite seal ring A, B between said valve seat and the valve body, realize the sealing between valve seat and valve body.Valve seat leans on the piston effect of pretightening force and the import medium power of butterfly spring that itself and spheroid are remained to compress and reaches sealing.
Also being provided with anti-slag circle C, D between said valve seat and the valve body, preventing that lime-ash from invading the spring place, is packing less between anti-slag circle and the valve body, only is in order to prevent the entering of solid particle.
The two ends of sealing surface of seat are the shape of scraping cutoff edge; Make lock slag valve open and close in the closed procedure each; The scraping cutoff edge and can play scraping action of sealing surface of seat to the lime-ash that spherome surface adheres to; Avoid lime-ash to be brought into and destroyed sealing surface between the sealing pair, guaranteed the sealing and the permanent operability of lock slag valve.
Said sealing surface of seat top layer is sprayed with chromium carbide coating, and surface hardness >=60HRC has improved anti-impact erosion and wear resistance, has eliminated lime-ash to the erosion of sealing surface of seat, the destruction that wearing and tearing cause, and has avoided the leakage of valve.
Said valve seat runner top layer is sprayed with chromium carbide coating, surface hardness >=60HRC has improved anti-impact erosion, wear resistance and corrosion resistance, has eliminated the valve seat body by the destruction of die-cut, perforation etc., has prolonged working life greatly.
The working principle of the utility model ball valve: valve rod rotates 90 °, and drives 90 ° of spheroid rotations, and the runner of valve is got clogged; Between valve seat and spheroid because the effect of the piston effect of the pretightening force of butterfly spring and import medium power has also kept sealing; Effect owing to Expanded graphite seal ring A, B between valve seat and the valve body has also realized sealing.Like this, whole deck valve door has just been realized closing, and medium is blocked in the entrance point of valve.
The superior effect of the utility model is:
1) Expanded graphite seal ring isolation method is set, valve seat leans on the piston effect of pretightening force and the import medium power of butterfly spring that itself and spheroid are remained to compress and reaches sealing;
2) sealing surface of seat and the valve seat runner mode taking to spray chromium carbide is carried out cure process; Make its hardness >=60HRC; Erosion wear resistance, wear resistance and corrosion resistance have been improved; Eliminated the valve seat body by the destruction of die-cut, perforation etc., avoided lime-ash, prolonged the working life of lock slag valve greatly the erosion of sealing surface of seat, the destruction that wearing and tearing cause;
3) sealing surface of seat adopts and scrapes the cutting blade shape, has prevented that lime-ash is bonded on the sealing surface, has avoided sealing surface destruction, lock slag valve can normally be opened and closed, and keep excellent sealing performance;
4) also being provided with anti-slag circle C, D between valve seat and the valve body, preventing that lime-ash from invading the spring place, is packing less between anti-slag circle and the valve body, only is in order to prevent the entering of solid particle.
Description of drawings
Fig. 1 is the structural representation of Fixed ball valve;
Fig. 2 is the structural representation of the utility model;
Fig. 3 is the enlarged view of sealing surface of seat;
Label declaration among the figure
1-spheroid; 2-sealing surface of seat;
3-valve seat; 4-valve seat runner;
5-T shape trim ring; 6-Expanded graphite seal ring A;
7-anti-slag circle C; 8-valve body;
9-adjustment circle; 10-butterfly spring;
11-L shaped trim ring; 12-Expanded graphite seal ring B;
13-anti-slag circle D; 14-upward back shafts;
15-valve rod; 16-left valve barrel;
17-following back shaft; 18-right valve barrel.
Embodiment
See also shown in the accompanying drawing, the utility model is done further to describe.
As shown in Figure 1, what lock slag valve adopted is all-pass footpath metal hard-sealing Fixed ball valve, and Fixed ball valve is to utilize the pretightening force of spring and piston effect to make valve seat 3 and spheroid 1 compress and seal.Valve seat 3 leans on the pretightening force and the spheroid 1 of butterfly spring 10 closely to compress; Spheroid 1 is through last back shaft 14, back shaft 17 is fixed on the right valve barrel 18 down; Left valve barrel 16, right valve barrel 18 connect through bolt, and spheroid 1 is connected with the cubic flat groove of valve rod 15 through valve rod 15 bottoms, when valve rod 15 rotates 90 °; Drive spheroid 1 and also rotate 90 °, realize the opening and closing of valve.
As shown in Figures 2 and 3, the utility model provides a kind of lock slag valve base, is provided with Expanded graphite seal ring A6, B12 between valve seat 3 and the valve body, realizes the sealing between valve seat 3 and valve body.Valve seat 3 leans on the piston effect of pretightening force and the import medium power of butterfly spring 10 that itself and spheroid 1 are remained to compress and reaches sealing.
Also being provided with anti-slag circle C7, D13 between said valve seat 3 and the valve body, preventing that lime-ash from invading butterfly spring 10 places, is packing less between anti-slag circle C7, D13 and the valve body, only is in order to prevent the entering of solid particle.
Said sealing surface of seat 2 top layers are sprayed with chromium carbide coating, and surface hardness >=60HRC has improved anti-impact erosion and wear resistance, have eliminated lime-ash to the erosion of sealing surface of seat, the destruction that wearing and tearing cause, and have avoided the leakage of valve.
Said valve seat runner 4 top layers are sprayed with chromium carbide coating, surface hardness >=60HRC has improved anti-impact erosion, wear resistance and corrosion resistance, have eliminated the valve seat body by the destruction of die-cut, perforation etc., have prolonged working life greatly.
The utility model valve seat 4 adopts chromium carbide as sealing surface, and required seal pressure is very high.Therefore adopt the mode of butterfly spring pretension; Through high capacity butterfly spring 10 initial pretightening unit sealing load is provided; Valve seat 3 and spheroid 1 are close together all the time, can satisfy the sealability of lock slag valve under the low differential pressure situation, solved again because the problem of the excessive friction square that thermal expansion caused; A higher sealing shearing force can be provided again, make lock slag valve in the process of opening, closing, play the effect of cutting of scraping in 2 pairs of spheroid 1 surfaces of sealing surface of seat.
The working principle of the utility model ball valve: valve rod 15 rotates 90 °, and drives 90 ° of spheroid 1 rotations, and the runner of valve is got clogged; 1 of valve seat 3 and spheroid are because the effect of the piston effect of the pretightening force of butterfly spring 10 and import medium power has also kept sealing; Effect owing to Expanded graphite seal ring A6, B12 between valve seat 3 and the valve body has also realized sealing.Like this, whole deck valve door has just been realized closing, and medium is blocked in the entrance point of valve.
Claims (3)
1. lock the slag valve base for one kind; Valve seat leans on the pretightening force and the spheroid of butterfly spring closely to compress; Spheroid is fixed on the right valve barrel through upper and lower back shaft, and left and right valve body connects through bolt, and spheroid is connected with the cubic flat groove of valve rod through stem lower portion; It is characterized in that: be provided with the Expanded graphite seal ring between said valve seat and the valve body, the two ends of sealing surface of seat are the shape of scraping cutoff edge.
2. lock slag valve base according to claim 1 is characterized in that: also be provided with anti-slag circle between said valve seat and the valve body.
3. lock slag valve base according to claim 1 is characterized in that: said sealing surface of seat and valve seat runner top layer are sprayed with chromium carbide coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205073091U CN202349250U (en) | 2011-12-08 | 2011-12-08 | Valve seat of lock hopper valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205073091U CN202349250U (en) | 2011-12-08 | 2011-12-08 | Valve seat of lock hopper valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349250U true CN202349250U (en) | 2012-07-25 |
Family
ID=46538257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205073091U Expired - Fee Related CN202349250U (en) | 2011-12-08 | 2011-12-08 | Valve seat of lock hopper valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349250U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927311A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | One-way sealing top-installing adjusting ball valve |
| CN103511657A (en) * | 2013-10-30 | 2014-01-15 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN103615595A (en) * | 2013-11-29 | 2014-03-05 | 四川苏克流体控制设备有限公司 | Lock hopper valve seat spring dust-preventing sealing structure |
| CN104879521A (en) * | 2015-06-12 | 2015-09-02 | 浙江成高阀门有限公司 | Wear-resisting ball valve for slurry and dust |
| CN106523731A (en) * | 2016-12-16 | 2017-03-22 | 重庆川仪调节阀有限公司 | Lock hopper ball valve |
| CN107327589A (en) * | 2017-07-31 | 2017-11-07 | 昆山维萨阀门有限公司 | A kind of HTHP fixing ball valve |
| CN110425299A (en) * | 2019-08-12 | 2019-11-08 | 重庆特通阀门有限公司 | A kind of gasification furnace lock hopper residual cake valve and its application method |
| WO2020247350A1 (en) * | 2019-06-03 | 2020-12-10 | Fisher Controls International Llc | Floating valve seat for a rotary control valve for use in severe service applications |
-
2011
- 2011-12-08 CN CN2011205073091U patent/CN202349250U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927311A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | One-way sealing top-installing adjusting ball valve |
| CN103511657A (en) * | 2013-10-30 | 2014-01-15 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN103511657B (en) * | 2013-10-30 | 2016-03-30 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN103615595A (en) * | 2013-11-29 | 2014-03-05 | 四川苏克流体控制设备有限公司 | Lock hopper valve seat spring dust-preventing sealing structure |
| CN103615595B (en) * | 2013-11-29 | 2015-09-09 | 四川苏克流体控制设备有限公司 | Lock slag valve base spring dust-proof sealing structure |
| CN104879521B (en) * | 2015-06-12 | 2018-12-11 | 浙江成高阀门有限公司 | Slurry dust wear resistance ball valve |
| CN104879521A (en) * | 2015-06-12 | 2015-09-02 | 浙江成高阀门有限公司 | Wear-resisting ball valve for slurry and dust |
| CN106523731A (en) * | 2016-12-16 | 2017-03-22 | 重庆川仪调节阀有限公司 | Lock hopper ball valve |
| CN107327589A (en) * | 2017-07-31 | 2017-11-07 | 昆山维萨阀门有限公司 | A kind of HTHP fixing ball valve |
| WO2020247350A1 (en) * | 2019-06-03 | 2020-12-10 | Fisher Controls International Llc | Floating valve seat for a rotary control valve for use in severe service applications |
| US11242933B2 (en) | 2019-06-03 | 2022-02-08 | Fisher Controls International Llc | Floating valve seat for a rotary control valve for use in severe service applications |
| US11644109B2 (en) | 2019-06-03 | 2023-05-09 | Fisher Controls International Llc | Floating valve seat for a rotary control valve for use in severe service applications |
| CN110425299A (en) * | 2019-08-12 | 2019-11-08 | 重庆特通阀门有限公司 | A kind of gasification furnace lock hopper residual cake valve and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee after: SHK VALVE GROUP CO., LTD. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: Shanghai SHK Valve Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20171208 |