CN204104157U - Flexible pipe safety-type bolt electric heater for repairing steam turbine - Google Patents
Flexible pipe safety-type bolt electric heater for repairing steam turbine Download PDFInfo
- Publication number
- CN204104157U CN204104157U CN201420157605.7U CN201420157605U CN204104157U CN 204104157 U CN204104157 U CN 204104157U CN 201420157605 U CN201420157605 U CN 201420157605U CN 204104157 U CN204104157 U CN 204104157U
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- China
- Prior art keywords
- stainless steel
- flexible hose
- bolt
- steam turbine
- steel flexible
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- Expired - Fee Related
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Abstract
The utility model is a kind of flexible pipe safety-type bolt electric heater for repairing steam turbine, stainless steel flexible hose is as metallic sheath, in-built resistance wire, thermal conductivity and the good magnesia powder of insulating properties is filled up in space, stainless steel flexible hose front-end end enclosure Stainless Steel Tubular Plates is welded, stainless steel flexible hose rear end cylindrical welds the circular upper part and square lower part flange of 3 millimeters thick, fix with four hold-down screws and insulation operating grip.In the bottom of circular upper part and square lower part flange, weld a M8 earthing screw.When steam turbine cylinder threaded bolt upper space is less, stainless steel flexible hose can bend and inject in bolt-center hole, heats bolt; After heating terminates, can conveniently extract bolt-center hole.Before using, a ground wire is connected on earthing screw, improves security performance, prevent electric shock accidents.
Description
Technical field
The utility model is a kind of electric bolt heater, is specifically related to a kind of flexible pipe safety-type bolt electric heater for repairing steam turbine.
Background technology
Turbine Steam in-cylinder pressure is high, and when tightening or dismantle turbine bolt, moment is large, and labour intensity is large.Utilize principle of expanding with heat and contracting with cold, bolt is heated, can tighten easily, quickly and easily or demounting bolt.The brief principle structure of bolt electric heater for repairing steam turbine is: metallic sheath, built with resistance wire, fills up thermal conductivity and the good magnesia powder of insulating properties in space.Wire in insulation operating grip is connected with resistance wire, and electric current arrives resistance wire through wire, and electric energy converts heat energy to, the thermal energy transfer oxidizing magnesium powder of resistance wire, then passes to metallic sheath.Metallic sheath injects in bolt-center hole, and the thermal energy transfer of metallic sheath is to bolt.Original technical scheme is: metallic sheath is stainless steel hard tube, no ground screw on the flange that stainless steel hard tube is connected with insulation operating grip, there is following gap: bolt electric heater for repairing steam turbine injects bolt-center hole and heats, when turbine bolt upper space is less, the metallic sheath that stainless steel hard tube does can not vertically inject or extract bolt-center hole; When the insulating properties of operating grip slightly declines, easily there is electric shock accidents.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of flexible pipe safety-type bolt electric heater for repairing steam turbine, metallic sheath is stainless steel flexible hose, metallic sheath is connected with insulation operating grip round flange on below, round flange lower weld earthing screw on below.
Adopt above technical scheme, its effect is apparent:
1, stainless steel flexible hose can bend, and when steam turbine cylinder threaded bolt upper space is less, stainless steel flexible hose can conveniently inject in bolt-center hole, heats bolt; After heating terminates, can conveniently extract bolt-center hole.
2, before using, a wire is connected on earthing screw, improves security performance, prevent electric shock accidents.
Accompanying drawing explanation
Fig. 1 is the bolt electric heater for repairing steam turbine structure diagram of original technical scheme.
Fig. 2 is the utility model flexible pipe safety-type bolt electric heater for repairing steam turbine structure diagram.
In figure: 1, Stainless Steel Tubular Plates 2, resistance wire 3, magnesia powder 4, stainless steel hard tube 5, flange 6, insulation operating grip 7, hold-down screw 8, stainless steel flexible hose 9, circular upper part and square lower part flange 10, earthing screw
Embodiment
With reference to Fig. 1, Fig. 2, the utility model is a kind of flexible pipe safety-type bolt electric heater for repairing steam turbine, stainless steel flexible hose 8 is as metallic sheath, in-built resistance wire 2, fill up thermal conductivity and the good magnesia powder 3 of insulating properties in space, stainless steel flexible hose 8 front-end end enclosure Stainless Steel Tubular Plates 1 is welded, stainless steel flexible hose 8 rear end cylindrical welds the circular upper part and square lower part flange 9 of 3 millimeters thick, fix with four M5 hold-down screws 7 and insulation operating grip, in the bottom of circular upper part and square lower part flange 9, weld a M8 earthing screw 10.
Claims (1)
1. a flexible pipe safety-type bolt electric heater for repairing steam turbine, it comprises Stainless Steel Tubular Plates (1), resistance wire (2), magnesia powder (3), stainless steel flexible hose (8), circular upper part and square lower part flange (9), insulation operating grip (6), hold-down screw (7), earthing screw (10), it is characterized in that: stainless steel flexible hose (8) is as metallic sheath, in-built resistance wire (2), thermal conductivity and the good magnesia powder (3) of insulating properties is filled up in space, stainless steel flexible hose (8) front-end end enclosure Stainless Steel Tubular Plates (1) is welded, stainless steel flexible hose (8) rear end cylindrical welds the circular upper part and square lower part flange (9) of 3 millimeters thick, fix with four M5 hold-down screws (7) and insulation operating grip (6), in the bottom of circular upper part and square lower part flange (9), weld a M8 earthing screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157605.7U CN204104157U (en) | 2014-04-03 | 2014-04-03 | Flexible pipe safety-type bolt electric heater for repairing steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157605.7U CN204104157U (en) | 2014-04-03 | 2014-04-03 | Flexible pipe safety-type bolt electric heater for repairing steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204104157U true CN204104157U (en) | 2015-01-14 |
Family
ID=52272551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420157605.7U Expired - Fee Related CN204104157U (en) | 2014-04-03 | 2014-04-03 | Flexible pipe safety-type bolt electric heater for repairing steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204104157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719653A (en) * | 2018-07-12 | 2020-01-21 | 日本特殊陶业株式会社 | Ceramic heater |
-
2014
- 2014-04-03 CN CN201420157605.7U patent/CN204104157U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719653A (en) * | 2018-07-12 | 2020-01-21 | 日本特殊陶业株式会社 | Ceramic heater |
| CN110719653B (en) * | 2018-07-12 | 2022-06-14 | 日本特殊陶业株式会社 | Ceramic heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150114 Termination date: 20170403 |