CN204493737U - Online rapid-maintenance power station stop valve - Google Patents
Online rapid-maintenance power station stop valve Download PDFInfo
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- CN204493737U CN204493737U CN201520108281.2U CN201520108281U CN204493737U CN 204493737 U CN204493737 U CN 204493737U CN 201520108281 U CN201520108281 U CN 201520108281U CN 204493737 U CN204493737 U CN 204493737U
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- valve
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- valve seat
- filler
- gland
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Abstract
Online rapid-maintenance power station stop valve, relate to the field of universal machine, particularly relate to the structure of valve, comprise valve body, valve seat, spool, valve rod, valve seat is arranged in valve body, between the bottom and valve body of valve seat, valve base sealing pad is set, spool is connected to the lower end of valve rod, the upper end of valve rod connects handwheel, described valve seat is connected with valve body detachable-type sealed, filler and Gland are set between valve body and valve rod, filler is arranged on the top of valve seat, Gland is arranged on the top of filler, in the upper end connection bracket of valve body, support compresses Gland by hold-down bolt.The utility model is connected with valve body detachable-type sealed due to valve seat, directly under valve body does not cut off pipe condition, can be realized the replacing of valve seat, spool fast, eliminate product defect in time by instrument, recovers rapidly as new.
Description
Technical field
The utility model relates to the field of universal machine, particularly relates to the structure of valve.
Background technique
Power station stop valve is widely used in switch, the unrestrained water of the system such as superheater, reheater, main steam, feedwater in thermal power plant, medium temperature is high, pressure is high, discharge pressure reduction is large, thus operating mode is severe, valve sealing face very easily washes away, cavitation erosion, has a strong impact on valve working life and power plants generating electricity efficiency.
Power station stop valve in the past, after sealing surface damages, usually needs to cut open from pipeline, returns workshop or manufacturer's repairing, or simply scrap process.Require high during the welding of valve and pipe welding seam, need special messenger to adopt special process to ensure weldquality, time-consumingly like this to take a lot of work, increase operation expense, extend the repair cycle, affect the raising of whole unit efficiency.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of online rapid-maintenance power station stop valve being convenient for changing valve seat.
The purpose of this utility model is achieved in that online rapid-maintenance power station stop valve, comprise valve body, valve seat, spool, valve rod, valve seat is arranged in valve body, between the bottom and valve body of valve seat, valve base sealing pad is set, spool is connected to the lower end of valve rod, the upper end of valve rod connects handwheel, described valve seat is connected with valve body detachable-type sealed, filler and Gland are set between valve body and valve rod, filler is arranged on the top of valve seat, Gland is arranged on the top of filler, and in the upper end connection bracket of valve body, support compresses Gland by hold-down bolt.
The utility model is connected with valve body detachable-type sealed due to valve seat, directly under valve body does not cut off pipe condition, can be realized the replacing of valve seat, spool fast, eliminate product defect in time by instrument, recovers rapidly as new.
As improvement of the present utility model, sleeve is set between described valve seat and filler, sleeve arranges several through holes.Owing to being arranged on sleeve, when such high-pressure medium is by aperture that excircle of sleeve distributes according to certain rules, throttling of can reducing pressure, reduces High Pressure Difference medium washing away for valve seat.
As further improvement of the utility model, hold-down bolt is threaded in the upper end of support, and the head of hold-down bolt holds out against Gland.Hold-down bolt of the present utility model is upside-down mounting, being different from ordinary construction is that the nut of formal dress-is namely above, hold-down bolt of the present utility model is installed on pedestal upper end face, do mainly balance bracket upper and lower end diameter difference like this, hold-down bolt is installed on pedestal lower end else if, and the end face diameter of lower end can be made larger.
As further improvement of the utility model, the lower end of support is connected with the threaded upper ends of valve body.Be connected with the divided ring of prior art or bolt, the utility model Placement is fairly simple, reliable, and cost is also low.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the schematic diagram that sleeve launches.
Embodiment
As shown in Figure 1, online rapid-maintenance power station stop valve, comprise valve body 1, valve seat 3, spool 4, valve rod 6, valve seat 3 is arranged in valve body 1, valve seat 3 is connected with valve body 1 detachable-type sealed, valve base sealing pad 2 is set between the bottom of valve seat 3 and valve body 1, spool 4 is connected to the lower end of valve rod 6, the upper end of valve rod 6 connects handwheel 11, sleeve 12, filler 5, Gland 7 is set gradually from the bottom to top between valve body 1 and valve rod 6, sleeve 12 is arranged on the top of valve seat 3, sleeve 12 arranges several through holes 12-1(as shown in Figure 2).In the threaded upper ends connection bracket 9 of valve body 1, support 9 compresses Gland 7 by hold-down bolt 8, and hold-down bolt 8 is threaded in the upper end of support 9, and the head of hold-down bolt 8 holds out against Gland 7.
Claims (4)
1. online rapid-maintenance power station stop valve, comprise valve body, valve seat, spool, valve rod, valve seat is arranged in valve body, between the bottom and valve body of valve seat, valve base sealing pad is set, spool is connected to the lower end of valve rod, the upper end of valve rod connects handwheel, it is characterized in that: described valve seat is connected with valve body detachable-type sealed, filler and Gland are set between valve body and valve rod, filler is arranged on the top of valve seat, Gland is arranged on the top of filler, and in the upper end connection bracket of valve body, support compresses Gland by hold-down bolt.
2. online rapid-maintenance power station stop valve according to claim 1, is characterized in that: between described valve seat and filler, arrange sleeve, sleeve arranges several through holes.
3. online rapid-maintenance power station stop valve according to claim 1, it is characterized in that: described hold-down bolt is threaded in the upper end of support, the head of hold-down bolt holds out against Gland.
4. online rapid-maintenance power station stop valve according to claim 1, is characterized in that: the lower end of described support is connected with the threaded upper ends of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108281.2U CN204493737U (en) | 2015-02-15 | 2015-02-15 | Online rapid-maintenance power station stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108281.2U CN204493737U (en) | 2015-02-15 | 2015-02-15 | Online rapid-maintenance power station stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493737U true CN204493737U (en) | 2015-07-22 |
Family
ID=53573056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520108281.2U Active CN204493737U (en) | 2015-02-15 | 2015-02-15 | Online rapid-maintenance power station stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762179A (en) * | 2021-01-14 | 2021-05-07 | 天工阀门集团有限公司 | Ultra-low temperature butterfly valve convenient to online maintenance |
-
2015
- 2015-02-15 CN CN201520108281.2U patent/CN204493737U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762179A (en) * | 2021-01-14 | 2021-05-07 | 天工阀门集团有限公司 | Ultra-low temperature butterfly valve convenient to online maintenance |
| CN112762179B (en) * | 2021-01-14 | 2021-07-27 | 天工阀门集团有限公司 | Ultra-low temperature butterfly valve convenient to online maintenance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |