CN201609855U - Steam turbine main air valve operation base crosshead tail hole bottom surface grinding tool - Google Patents
Steam turbine main air valve operation base crosshead tail hole bottom surface grinding tool Download PDFInfo
- Publication number
- CN201609855U CN201609855U CN2010203016579U CN201020301657U CN201609855U CN 201609855 U CN201609855 U CN 201609855U CN 2010203016579 U CN2010203016579 U CN 2010203016579U CN 201020301657 U CN201020301657 U CN 201020301657U CN 201609855 U CN201609855 U CN 201609855U
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- CN
- China
- Prior art keywords
- crosshead
- frock
- steam turbine
- air valve
- tail hole
- 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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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses a steam turbine main air valve operation base crosshead tail hole bottom surface grinding tool, the main body of the grinding tool is a cylinder and comprises a positioning segment (6) and a screw thread prevention segment (7) which are matched with the crosshead tail hole, an end surface of the screw thread prevention segment (7) side is a working surface (8), the flatness of the working surface (8) is smaller than 0.025 mm, the perpendicularity of the working surface and the positioning segment cylinder surface is smaller than 0.02 mm, the working surface is coated with grinding paste and then is arranged in the unqualified crosshead tail hole at the bottom to perform the rotary grinding, the qualified crosshead tail hole bottom surface can be rapidly grinded and finished, so that the flatness and the perpendicularity of the crosshead tail hole bottom surface can reach the machining precision requirement. The utility model has advantages of simple structure, convenient using and high machining efficiency.
Description
Technical field
The utility model relates to a kind of machining frock, especially relates to a kind of steam turbine main air valve and handles seat bottom surface, crosshead afterbody hole grinding frock.
Background technology
The steam turbine main air valve is handled seat crosshead afterbody hole and mainly is made of positioning section (1), locking screw section (2) and retaining pin construction section (3), must in retaining pin-and-hole (4), assemble retaining pin after being screwed into valve rod, the valve rod end face is contacted with the bottom surface (5) in crosshead afterbody hole, if its contact is bad, then in the switch engineering of steam turbine main air valve, its impulsive force causes retaining pin to cut off easily, thereby and cause valve rod to become flexible and destroy locking screw, therefore cause the opening and closing effectively of steam turbine main air valve, form potential safety hazard.
For these reasons, usually it is higher to require the steam turbine main air valve to handle an accuracy of manufacture of bottom surface, crosshead afterbody hole (5), its flatness needs less than 0.025mm, processes less than the main at present method of turning that adopts of 0.04mm. with the perpendicularity on the positioning section face of cylinder, earlier rough turn finish turning again, Che Haohou detects its precision again, if it is not enough to detect its precision, then need finish turning once more, qualified until detecting, the processing method of this finish turning repeatedly, detection, clamping inconvenience and working (machining) efficiency are extremely low.
The utility model content
Technical problem to be solved in the utility model provides a kind of steam turbine main air valve and handles seat bottom surface, crosshead afterbody hole grinding frock, can carry out cutting down fast to the detected crosshead afterbody hole underproof product of bottom surface precision behind the first finish turning.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole and is ground frock, this frock main body is a cylinder, comprise the positioning section and the screw thread section of dodging that match with crosshead afterbody hole, the end face of the screw thread section of dodging side is a working face, the flatness of working face is less than 0.025mm, and the perpendicularity on the working face and the positioning section face of cylinder is less than 0.02mm.
The positioning section side end face of described frock is provided with rotary handle.
The utility model steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole and is ground frock, spread abrasive pastes and be placed in the underproof crosshead afterbody hole, bottom surface and be rotated grinding being coated with on its working face, cutting down goes out qualified bottom surface, crosshead afterbody hole apace, makes its flatness and perpendicularity reach requirement on machining accuracy.
The utility model steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole and is ground a frock, on the end face of the positioning section side of frock rotary handle is set, and can the handled easily person will detect and carry out fast rotational after frock places crosshead afterbody hole.
In sum, the utility model steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole and ground frock, and is simple in structure, easy to use, the working (machining) efficiency height.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the structural representation that the steam turbine main air valve is handled seat crosshead afterbody hole.
Fig. 2 is the structural representation that the utility model steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole grinding frock.
Wherein, Reference numeral: 1 is the positioning section in crosshead afterbody hole, 2 is the locking screw section in crosshead afterbody hole, 3 is the retaining pin construction section in crosshead afterbody hole, 4 is the retaining pin-and-hole of crosshead afterbody hole side, 5 is the bottom surface in crosshead afterbody hole, 6 for grinding the positioning section of frock, 7 for grinding the screw thread section of dodging of frock, 8 for grinding the working face of frock, and 9 for grinding the positioning section face of cylinder of frock, and 10 for grinding the rotary handle of frock, 11 is the annular knurl on the rotary handle, and 12 is the spanner position on the rotary handle.
The specific embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
As shown in Figure 2, the utility model steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole and is ground frock, this frock main body is a cylinder, comprise the positioning section 6 and the screw thread section of dodging 7 that match with crosshead afterbody hole, the end face of the screw thread section of dodging 7 sides is a working face 8, the flatness of working face 8 is less than 0.025mm, and the perpendicularity on the working face and the positioning section face of cylinder 9 is less than 0.02mm.The radial dimension that detects each section of frock needs corresponding with the radial dimension of each section of crosshead afterbody hole, can not damage the locking screw in crosshead afterbody hole to guarantee frock in crosshead afterbody hole, to rotate smoothly, and must guarantee that positioning section 6 can play effective radial location effect.Grind the rotation of frock for convenience, on the end face of positioning section 6 sides of frock, rotary handle 10 is set, and annular knurl 11 is set on the handle cylindrical, also the end of rotary handle 10 can be designed to orthohexagonal spanner position 11, can use spanner or drilling machine during grinding to reduce operator's labour intensity.
As depicted in figs. 1 and 2, when using the utility model steam turbine main air valve to handle seat bottom surface, crosshead afterbody hole grinding frock, on the working face 8 that detects frock, evenly smear abrasive pastes earlier, to grind frock again places in the crosshead afterbody hole, contact fully with bottom surface, crosshead afterbody hole 5 until the working face 8 that grinds frock, spin finishing frock then, in the precision that detects bottom surface, crosshead afterbody hole 5, all reach requirement on machining accuracy after grinding a period of time until the flatness and the perpendicularity that make the steam turbine main air valve handle seat bottom surface, crosshead afterbody hole.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. a steam turbine main air valve is handled seat bottom surface, crosshead afterbody hole and is ground frock, it is characterized in that: this frock main body is a cylinder, comprise the positioning section (6) and the screw thread section of dodging (7) that match with crosshead afterbody hole, the end face of the screw thread section of dodging (7) side is working face (8), the flatness of working face (8) is less than 0.025mm, and the perpendicularity of working face and the positioning section face of cylinder (9) is less than 0.02mm.
2. frock is detected in bottom surface, crosshead afterbody hole according to claim 1, and it is characterized in that: the end face of the positioning section of described frock (6) side is provided with rotary handle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203016579U CN201609855U (en) | 2010-01-27 | 2010-01-27 | Steam turbine main air valve operation base crosshead tail hole bottom surface grinding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203016579U CN201609855U (en) | 2010-01-27 | 2010-01-27 | Steam turbine main air valve operation base crosshead tail hole bottom surface grinding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201609855U true CN201609855U (en) | 2010-10-20 |
Family
ID=42960488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203016579U Expired - Fee Related CN201609855U (en) | 2010-01-27 | 2010-01-27 | Steam turbine main air valve operation base crosshead tail hole bottom surface grinding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201609855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564931A (en) * | 2019-10-21 | 2019-12-13 | 大连船用柴油机有限公司 | Medium-frequency surface quenching method and tool for crosshead of large-scale low-speed marine diesel engine |
-
2010
- 2010-01-27 CN CN2010203016579U patent/CN201609855U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564931A (en) * | 2019-10-21 | 2019-12-13 | 大连船用柴油机有限公司 | Medium-frequency surface quenching method and tool for crosshead of large-scale low-speed marine diesel engine |
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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: 20101020 Termination date: 20140127 |