CN201363456Y - T-shaped tee valve for inlet of high pressure heater - Google Patents
T-shaped tee valve for inlet of high pressure heater Download PDFInfo
- Publication number
- CN201363456Y CN201363456Y CNU2009200883432U CN200920088343U CN201363456Y CN 201363456 Y CN201363456 Y CN 201363456Y CN U2009200883432 U CNU2009200883432 U CN U2009200883432U CN 200920088343 U CN200920088343 U CN 200920088343U CN 201363456 Y CN201363456 Y CN 201363456Y
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- Prior art keywords
- valve
- pressure heater
- base
- valve rod
- valve base
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- Expired - Fee Related
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Abstract
The utility model discloses a T-shaped tee valve for inlet of high pressure heater in large-scale thermal power plant, which comprises a valve body, a valve cover, a bracket and a valve rod, an upper valve base and a lower valve base are arranged in the valve body, a valve flap is arranged between the upper valve base and a lower valve base, the valve flap is connected with the lower end of the valve rod, seal mechanisms are respectively arranged between the valve rod and the bracket and between the valve rod and the valve cover, the upper part of the valve rod is screwed with the valve rod nut mounted on the bracket, the upper end of the valve rod is connected with an electric device, the three channels of the valve body are in T-shaped distribution, one side channel is water inlet channel, the other side channel is bypass water outlet channel and the middle channel is the downward water outlet channel, the water inlet channel and the bypass water outlet channel are in the same axis, the upper valve base is in sealed connection with the valve body through positioning fastening seal mechanism. The T-shaped tee valve for inlet of high pressure heater has reasonable design, good seal performance, good water flow fluidity and long service life and has good economic benefits after popularization.
Description
One, technical field:
The utility model relates to a kind of three-way valve, particularly relates to a kind of T type three-way valve that is used for large-size thermal power plant high-pressure heater inlet.
Two, background technique:
High-pressure heater inlet three-way valve is to be applied to one of key equipment on the large-scale thermal power machine group high-pressure heater inlet pipe, plays the protection high-pressure heater.When high-pressure heater normally moved, the three-way valve main road was opened, and bypass is closed, and high-pressure feed water enters high-pressure heater by the three-way valve main road and carries out heat exchange, enters boiler then; When high-pressure heater broke down, the three-way valve main road was closed, and feedwater switches to bypass, directly enters boiler, makes high-pressure heater safety off-the-line.
The outlet that present high-pressure heater three-way valve will arrive bypass is divided into two-way, or water intake pipeline and bypass water outlet pipeline are not on an axis, and its flow characteristic is poor, the energy consumption height, and the spatial arrangement of power plant's feedwater piping brought big difficulty; Upper valve base adopts soft seal ring or other fixed structure, design unreasonablely, and wearing and tearing, aging appear in seal ring in very short time, often appearance leakage.
Three, model utility content:
The technical problems to be solved in the utility model is: overcome the drawback that prior art exists, propose a kind of reasonable in design, good airproof performance, flow is good and the high-pressure heater of long service life enters the mouth T type three-way valve.
The technical solution of the utility model is: a kind of high-pressure heater inlet T type three-way valve, comprise valve body, valve gap, support and valve rod, be provided with upper valve base and lower valve base in the described valve body, be provided with flap between described upper valve base and the lower valve base, described flap is connected with described valve rod lower end, be respectively arranged with sealing mechanism between described valve rod and support and the valve gap, and described valve rod top screws mutually with rack-mount Stem Mut, its upper end is connected with Electric actuator, described valve body triple channel is the setting of T type, the one side is an intake tunnel, opposite side is the bypass exhalant canal, middle is exhalant canal downwards, and described intake tunnel and bypass exhalant canal are on the same axis, and described upper valve base is connected with described valve seal by location fit sealing mechanism.
Metal self-sealing ring, pendant collet, pressing plate and pretension bolt are contained in described location fit sealing mechanism, wherein, described pendant collet is installed in the draw-in groove of described body cavity, can locate, described pendant collet upper-end surface is provided with described pressing plate, and described clamping bolt runs through described pressing plate and is connected with described upper valve base upper end, can be fastening, be provided with described metal self-sealing ring between described upper valve base and described pendant collet and the described valve body, can seal.
Be provided with belleville spring between described pretension bolt and the described pressing plate, store pretightening force, prevent bolt looseness; Be provided with gasket ring between described metal self-sealing ring and the described pendant collet.
The beneficial effects of the utility model are:
1, the utility model valve body triple channel arranges that for the T type intake tunnel and bypass exhalant canal are on the same axis, thereby, the good flowing properties of current, and be easy to power plant's layout pipeline; In addition, upper valve base and valve body are the metal self-sealing structure, metal self-sealing ring amount of deformation when being subjected to the medium pushed at high pressure is very little, and its pretension bolt is provided with butterfly spring deposit pretightening force, avoided when closing bypass flap to be subjected to medium pushed at high pressure upper valve base to make pretension bolt loosening, thereby its sealing is more reliable, long service life.
2, the utility model is reasonable in design, and its pendant collet is installed in the draw-in groove of body cavity, plays the role of positioning, and is easy to use for pretension bolt provides application of force platform, and easy accessibility.
3, be provided with gasket ring between the utility model metal self-sealing ring and the pendant collet, can increase the stressed uniformity of metal self-sealing ring like this, improve sealing effect.
4, the utility model is applicable to the high-pressure heater inlet pipe of large-scale thermal power machine group, is easy to promote, and has good economic benefit.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an A shown in Figure 1 place enlarged view.
Five, embodiment:
Embodiment: referring to Fig. 1, among the figure, 1-valve body, 2-lower valve base, the 3-flap, 4-valve rod, 5-upper valve base, 6-metal self-sealing ring, the 7-gasket ring, 8-pendant collet, 9-pressing plate, 10-valve gap, the 11-seal ring, 12-pendant collet, 13-pressing plate, 14-filler, the 15-support, 16-Stem Mut, 17-Electric actuator, the 18-belleville spring, 19-pre-load nut, 20-pretension bolt.
During the high-pressure heater proper functioning, Electric actuator 17 actuate valve stem 4 drive flap 3 and move upward, and fit with upper valve base 5 sealing surfaces, cut off the passage toward bypass, and high-pressure feed water enters high-pressure heater downwards.This moment, the pressure of high-pressure feed water was pressed to upper seal support 5 with flap 3, and metal self-sealing ring 6 further compress, may cause becoming flexible of pre-load nut 19 on the pretension bolt 20.But owing to be provided with belleville spring 18, the pretightening force of its storage has prevented the loosening of pre-load nut 19.Metal self-sealing ring 6 decrement when pressurized is very small in addition, is unlikely to may make after compression as the soft seal ring pre-load nut to be totally released.Therefore metal self-sealing ring 6 and belleville spring 18 make upper seal support 5 more reliable with the sealing of valve body 1, and also more nonmetal seal ring of life-span improves greatly.
When high-pressure heater broke down, Electric actuator 17 actuate valve stem 4 drove flap 3 and move downward, and fit with lower valve base 2 sealing surfaces, cut off the passage of feedwater toward high-pressure heater, make the high-pressure heater off-the-line.Feedwater upwards through the right side outlet, arrives boiler by bypass.Realize that high-pressure feed water is to high-pressure heater or arrive the switching of bypass.
Change the specific constructive form of metal self-sealing ring, the specific constructive form that changes belleville spring can be formed a plurality of embodiments, is common variation of the present utility model, does not describe in detail one by one at this.
Claims (3)
1, a kind of high-pressure heater inlet T type three-way valve, comprise valve body, valve gap, support and valve rod, be provided with upper valve base and lower valve base in the described valve body, be provided with flap between described upper valve base and the lower valve base, described flap is connected with described valve rod lower end, be respectively arranged with sealing mechanism between described valve rod and support and the valve gap, and described valve rod top screws mutually with rack-mount Stem Mut, its upper end is connected with Electric actuator, it is characterized in that: described valve body triple channel is the setting of T type, the one side is an intake tunnel, opposite side is the bypass exhalant canal, middle is exhalant canal downwards, and described intake tunnel and bypass exhalant canal are on the same axis, and described upper valve base is connected with described valve seal by location fit sealing mechanism.
2, high-pressure heater inlet T type three-way valve according to claim 1, it is characterized in that: metal self-sealing ring, pendant collet, pressing plate and pretension bolt are contained in described location fit sealing mechanism, wherein, described pendant collet is installed in the draw-in groove of described body cavity, can locate, described pendant collet upper-end surface is provided with described pressing plate, described clamping bolt runs through described pressing plate and is connected with described upper valve base upper end, can be fastening, be provided with described metal self-sealing ring between described upper valve base and described pendant collet and the described valve body, can seal.
3, high-pressure heater inlet T type three-way valve according to claim 2 is characterized in that: be provided with belleville spring between described pretension bolt and the described pressing plate, store pretightening force, prevent bolt looseness; Be provided with gasket ring between described metal self-sealing ring and the described pendant collet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200883432U CN201363456Y (en) | 2009-01-21 | 2009-01-21 | T-shaped tee valve for inlet of high pressure heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200883432U CN201363456Y (en) | 2009-01-21 | 2009-01-21 | T-shaped tee valve for inlet of high pressure heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201363456Y true CN201363456Y (en) | 2009-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200883432U Expired - Fee Related CN201363456Y (en) | 2009-01-21 | 2009-01-21 | T-shaped tee valve for inlet of high pressure heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201363456Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434693A (en) * | 2011-12-02 | 2012-05-02 | 杭州华惠阀门有限公司 | Pressure reducing valve |
| CN102996852A (en) * | 2012-08-17 | 2013-03-27 | 大连大高阀门股份有限公司 | Hydraulic self-operated three-way valve |
| CN102996853A (en) * | 2012-08-17 | 2013-03-27 | 大连大高阀门股份有限公司 | High-temperature, high-class and large-caliber electric high-feeding-hole three-way valve |
| CN103821965A (en) * | 2014-01-25 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | High-pressure heater three-way valve driven by inner high-pressure piston |
| CN104154267A (en) * | 2014-08-07 | 2014-11-19 | 浙江标盛阀门制造有限公司 | Double-seal sampling three-way valve |
| CN104344011A (en) * | 2013-08-08 | 2015-02-11 | 北京斯维克阀门厂 | Bypass three-way valve of high-pressure heater |
| CN106838370A (en) * | 2017-03-13 | 2017-06-13 | 钟浪雅 | A kind of triple valve for surveying water velocity and energy import filtering |
| CN109707466A (en) * | 2019-02-28 | 2019-05-03 | 杭州华惠阀门有限公司 | A kind of extra-supercritical unit and its high plus leakage emergent treatment system |
-
2009
- 2009-01-21 CN CNU2009200883432U patent/CN201363456Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434693A (en) * | 2011-12-02 | 2012-05-02 | 杭州华惠阀门有限公司 | Pressure reducing valve |
| CN102996852A (en) * | 2012-08-17 | 2013-03-27 | 大连大高阀门股份有限公司 | Hydraulic self-operated three-way valve |
| CN102996853A (en) * | 2012-08-17 | 2013-03-27 | 大连大高阀门股份有限公司 | High-temperature, high-class and large-caliber electric high-feeding-hole three-way valve |
| CN102996852B (en) * | 2012-08-17 | 2016-03-23 | 大连大高阀门股份有限公司 | Surge self-operated three-way valve |
| CN104344011A (en) * | 2013-08-08 | 2015-02-11 | 北京斯维克阀门厂 | Bypass three-way valve of high-pressure heater |
| CN103821965A (en) * | 2014-01-25 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | High-pressure heater three-way valve driven by inner high-pressure piston |
| CN104154267A (en) * | 2014-08-07 | 2014-11-19 | 浙江标盛阀门制造有限公司 | Double-seal sampling three-way valve |
| CN106838370A (en) * | 2017-03-13 | 2017-06-13 | 钟浪雅 | A kind of triple valve for surveying water velocity and energy import filtering |
| CN109707466A (en) * | 2019-02-28 | 2019-05-03 | 杭州华惠阀门有限公司 | A kind of extra-supercritical unit and its high plus leakage emergent treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20120121 |