CN2191282Y - Turn-stop wear-proof device - Google Patents
Turn-stop wear-proof device Download PDFInfo
- Publication number
- CN2191282Y CN2191282Y CN 94203509 CN94203509U CN2191282Y CN 2191282 Y CN2191282 Y CN 2191282Y CN 94203509 CN94203509 CN 94203509 CN 94203509 U CN94203509 U CN 94203509U CN 2191282 Y CN2191282 Y CN 2191282Y
- Authority
- CN
- China
- Prior art keywords
- valve
- nut
- turn
- key
- utility
- 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.)
- Expired - Fee Related
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- Control Of Turbines (AREA)
Abstract
The utility model discloses a turn-stop wear-proof device on a cross arm group valve type adjusting steam valve for a middle turbine or a small turbine. One side of a nut at a valve stem is milled with a key trough which is firmly fixed by a top thread. A turn-stop pin seat is firmly fixed by two screws on the upper flat surface of a cross arm. A pin key is correspondingly arranged in the key trough of a valve cap. The utility model solves the problem that the nut of the valve stem is loosened and worn.
Description
The utility model relates to the spline shoe on a kind of cross-arm formula group valve type adjusting steam valve that is used on the medium and small steam turbine, belongs to mechanical.
Regulate in the steam turbine of steam valve in cross-arm formula group valve type; because the admission of both sides steam guiding tube stream is uneven; all will produce a couple to each steam valve; it is running torque; when steam turbine increases load; a certain steam valve is when opening; because the running torque that uneven air-flow produces is greater than friction between steam valve stem nut and the crossbeam; valve rod promptly is rotated; the difference of two power is big more; rotational speed is accelerated, and makes valve rod positioning screw cap or crossbeam surface of contact produce wearing and tearing, thereby adjusting steam valve degree of overlapping is destroyed; cause operating steam turbine generation load swing; so the operation some months will be taken the adjusting steam valve apart, and frequent maintenance is changed part and caused manpower; the loss of material resources; reduce generating; power supply; even have an accident, overhauled by forced-stopping machine.
The utility model is at the problems referred to above, provides preventing with mechanical means that the upper and lower switch of a kind of not overslaugh valve rod moves to rotate, thereby the cross-arm formula group valve type of having eliminated the wearing and tearing of valve rod nut is regulated the spline shoe of steam valve.
Task of the present utility model is finished as follows: one side milling of valve rod upper cap nut is gone out keyway, and uses the jackscrew firm retention, on cross-arm the plane with two pieces of fastening spline key seats of screw, the pin key correspondence in the keyway of bonnet,
The utility model is owing to adopt key, groove to match, solved the loosening wear problem of Air-regulating valves positioning screw cap, eliminated the regulating system load swing, light maintenance needn't be taken off lid inspection and be regulated steam valve, only checks during overhaul and needn't change part, has not only guaranteed the steam turbine set safe and stable operation, shorten maintenance duration simultaneously, prolong maintenance interval and maintenance number of times, multiple electricity, many heat supplies are increased economic efficiency.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model structural drawing
Fig. 2 is the utility model plan view
With reference to accompanying drawing 1,2, ［ 2 ］ one side millings of valve rod ［ 1 ］ upper cap nut are gone out keyway ［ 3 ］, and with jackscrew ［ 4 ］ firm retention, go up with the fastening spline key seats of two pieces of screws ［ 5 ］ ［ 6 ］ plane on cross-arm ［ 8 ］, and pin key ［ 7 ］ correspondence is in the keyway ［ 3 ］ of nut ［ 2 ］.
Claims (1)
1, a kind of spline shoe, it is to be made of valve rod [1], nut [2], jackscrew [4], it is characterized in that: [2] one side millings of valve rod [1] upper cap nut are gone out keyway [3], and with jackscrew [4] firm retention, go up with the fastening spline key seats of two pieces of screws [5] [6] on plane on cross-arm [8], and pin key [7] is corresponding in the keyway [3] of nut [2].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94203509 CN2191282Y (en) | 1994-02-04 | 1994-02-04 | Turn-stop wear-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94203509 CN2191282Y (en) | 1994-02-04 | 1994-02-04 | Turn-stop wear-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2191282Y true CN2191282Y (en) | 1995-03-08 |
Family
ID=33822998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94203509 Expired - Fee Related CN2191282Y (en) | 1994-02-04 | 1994-02-04 | Turn-stop wear-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2191282Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454037A (en) * | 2014-10-24 | 2015-03-25 | 东方电气集团东方汽轮机有限公司 | Connecting structure for valve rod and crossed sleeve of turbine high-pressure main steam regulating valve |
| CN105666217A (en) * | 2016-04-16 | 2016-06-15 | 内蒙古北方重工业集团有限公司 | Hydraulic clamping device for heavy part |
-
1994
- 1994-02-04 CN CN 94203509 patent/CN2191282Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454037A (en) * | 2014-10-24 | 2015-03-25 | 东方电气集团东方汽轮机有限公司 | Connecting structure for valve rod and crossed sleeve of turbine high-pressure main steam regulating valve |
| CN105666217A (en) * | 2016-04-16 | 2016-06-15 | 内蒙古北方重工业集团有限公司 | Hydraulic clamping device for heavy part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |