CN104835663A - Steam turbine switch box - Google Patents
Steam turbine switch box Download PDFInfo
- Publication number
- CN104835663A CN104835663A CN201510305781.XA CN201510305781A CN104835663A CN 104835663 A CN104835663 A CN 104835663A CN 201510305781 A CN201510305781 A CN 201510305781A CN 104835663 A CN104835663 A CN 104835663A
- Authority
- CN
- China
- Prior art keywords
- switch
- cam
- pinion
- steam turbine
- automatic centering
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
Landscapes
- Control Of Turbines (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a steam turbine switch box used for nuclear electric power generation and thermal power generation; the steam turbine switch box uses a heatproof type double loop Limit switch with temperature toleration reaching +120 DEG C, thus realizing multiplication signal output, simplifying a structure, and reducing cost; cam random angle position setting can be realized without being limited by composition divide, thus preventing disadvantages of a sector shift fork mechanism; a cam engage switch is removed so as to prevent hidden troubles existing in a floating self-locking mechanism; the sector shift fork mechanism is removed so as to reduce rotary inertia; an automatic centering distensible connection sleeve is employed, and when bearing a load, combination pressure and companying friction between the automatic centering distensible connection sleeve and a part and a shaft can transfer a torque, an axial force or a composite load of the said two; the steam turbine switch box is high in centering precision, convenient in mounting, adjusting and dismounting, high in intensity, and stable and reliable in connection.
Description
Technical field
The present invention relates to electric turbine technical field of system control, particularly relate to a kind of steam turbine switch enclosure.
Background technology
What current domestic nuclear power generation, fiery electric turbine group valve opening and closing control switch box all adopted is external product, and expensive, delivery cycle is long, and technology is abroad monopolized, and is if things go on like this unfavorable for domestic nuclear power generation cause.
There is following problem in external nuclear power generation product: 1, switch enclosure is because be that single-circuit switch exports, and associated components certainly will be caused more if multiloop exports; 2, the original position of switch enclosure determines it is circumference equal dividing, and does not accomplish arbitrarily angledly to determine; 3, switch enclosure cam and camshaft are in floating self-locking mechanism, can not accomplish reliably, closely make it fastening; 4, switch, cam, cam engager are more.
There is following problem in external fire generating product: 1, switch enclosure is because be that single-circuit switch exports, and multiloop exports and associated components certainly will be caused more and not easily realize; 2, fan-shaped shifting fork mechanism in switch enclosure, the radius of gyration is comparatively large, is not circle distribution simultaneously, under the effect of large impulsive force, produces larger moment of inertia, and axle produces larger frictional force at axle sleeve Inner simultaneously; 3, switch enclosure driving lever axle sleeve is independent support, and shift lever axis is friction pair stressed greatly (linear contact lay) when in axle sleeve, Rapid Relative slides; 4, fan-shaped shifting fork mechanism is due to reasons in structure, debugs very difficult, causes other parts very easily to damage simultaneously.
Summary of the invention
The present invention, for solving the above problems, provides a kind of steam turbine switch enclosure.
For solving the problems of the technologies described above, technical scheme of the present invention is: steam turbine switch enclosure, comprise box body, driving lever, gear wheel, pinion and connecting terminal block, the side of tray interior is provided with L plate, the top of L plate is provided with U-shaped plate, U-shaped plate is provided with connecting terminal block, L plate is connected with Large Gear Shaft, Large Gear Shaft passes box body and is connected with driving lever, gear wheel is arranged in Large Gear Shaft, gear wheel engages with pinion and arranges up and down, pinion is arranged on pinion shaft, pinion shaft passes L plate and the two ends of pinion shaft are all connected with box body, pinion shaft is provided with double loop travel switch and/or single loop travel switch, double loop travel switch comprises automatic centering expansion coupling sleeve, cam and heat resistant type double loop limit switch, several automatic centering expansion coupling sleeves are sleeved on pinion shaft, automatic centering expansion coupling sleeve is provided with cam, cam contacts with heat resistant type double loop limit switch, heat resistant type double loop limit switch is fixed on U-shaped plate, and heat resistant type double loop limit switch is connected with connecting terminal block, single loop travel switch comprises automatic centering expansion coupling sleeve, cam and Half Close Plant Type of Hybrid encapsulation switch, several automatic centering expansion coupling sleeves are sleeved on pinion shaft, automatic centering expansion coupling sleeve is provided with cam, cam and Half Close Plant Type of Hybrid encapsulate switch and contact, Half Close Plant Type of Hybrid encapsulation switch is fixed on U-shaped plate, and Half Close Plant Type of Hybrid encapsulation switch is connected with connecting terminal block.
Further, the front of box body is provided with polyester transparent plate.
Further, gear wheel and pinion are straight tooth structure.
Further, driving lever is installed with jaw clutch, jaw clutch to be sleeved in Large Gear Shaft and to be positioned at the outside of box body.
Further, gear wheel and pinion are helical teeth structure.
Namely the present invention can be used for nuclear power generation, can be used for again fire generating, enormously simplify the structure of external product, achieve and achieve more output function with less parts, overall lightweight, reduces production cost, promote cost performance, more surmounted the performance of external product, this technology is no longer abroad monopolized, and is greatly beneficial to the development of domestic generating cause; Adopt heat resistant type double loop limit switch, temperature tolerance can reach+120 degree, and realize multiplied signal and export, simplified structure, reduces costs; The setting of cam any angular position can be realized, not by point restrictions such as structures, evade the deficiency of fan-shaped shifting fork mechanism; Cancel cam engager, avoid the hidden danger that floating self-locking mechanism self exists; Cancel fan-shaped shifting fork mechanism, reduce moment of inertia; Adopt automatic centering expansion coupling sleeve, when bearing load, by itself and parts, axle in conjunction with pressure and the frictional force transmitting torque, axial force or the combined load of the two that produce together, accuracy of alignment is high, installation, adjustment, convenient disassembly, intensity is high, and connective stability is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is A place zoomed-in view;
Fig. 3 is B place zoomed-in view.
Wherein: 1. box body, 2. driving lever, 3. jaw clutch, 4. polyester transparent plate, 5. gear wheel, 6. Large Gear Shaft, 7.L plate, 8. pinion, 9. pinion shaft, 10. automatic centering expansion coupling sleeve, 11. cams, 12. heat resistant type double loop limit switches, 13. Half Close Plant Type of Hybrid encapsulation switches, 14.U template, 15. connecting terminal blocks.
Embodiment
Embodiment one
As shown in Figure 1-Figure 3, for the steam turbine switch enclosure of nuclear power generation, comprise box body 1, driving lever 2, gear wheel 5, pinion 8 and connecting terminal block 15, the front of box body 1 is provided with polyester transparent plate 4, the side of box body 1 inside is provided with L plate 7, the top of L plate 7 is provided with U-shaped plate 14, U-shaped plate 14 is provided with connecting terminal block 15, L plate 7 is connected with Large Gear Shaft 6, Large Gear Shaft 6 passes box body 1 and is connected with driving lever 2, driving lever 2 is installed with jaw clutch 3, jaw clutch 3 to be sleeved in Large Gear Shaft 6 and to be positioned at the outside of box body 1, gear wheel 5 is arranged in Large Gear Shaft 6, gear wheel 5 engages with pinion 8 and arranges up and down, gear wheel 5 and pinion 8 are straight tooth structure, pinion 8 is arranged on pinion shaft 9, pinion shaft 9 passes L plate 7 and the two ends of pinion shaft 9 are all connected with box body 1, pinion shaft 9 is provided with double loop travel switch and/or single loop travel switch, double loop travel switch comprises automatic centering expansion coupling sleeve 10, cam 11 and heat resistant type double loop limit switch 12, several automatic centering expansion coupling sleeves 10 are sleeved on pinion shaft 9, automatic centering expansion coupling sleeve 10 is provided with cam 11, cam 11 contacts with heat resistant type double loop limit switch 12, heat resistant type double loop limit switch 12 is fixed on U-shaped plate 14, and heat resistant type double loop limit switch 12 is connected with connecting terminal block 15, single loop travel switch comprises automatic centering expansion coupling sleeve 10, cam 11 and Half Close Plant Type of Hybrid encapsulation switch 13, several automatic centering expansion coupling sleeves 10 are sleeved on pinion shaft 9, automatic centering expansion coupling sleeve 10 is provided with cam 11, cam 11 and Half Close Plant Type of Hybrid encapsulate switch 13 and contact, Half Close Plant Type of Hybrid encapsulation switch 13 is fixed on U-shaped plate 14, and Half Close Plant Type of Hybrid encapsulation switch 13 is connected with connecting terminal block 15, automatic centering expansion coupling sleeve 10 is a kind of keyless joint devices, and its principle and purposes are the effects by high strength tension bolt, between inner ring and axle, between outer shroud and wheel hub, produce huge enclasping force, to realize the keyless joint of parts and axle, make driving lever 2 along axis rotation (being not more than 90 degree) when steam turbine valve backward stick action, shift lever axis drives gear wheel 5 to rotate, gear wheel 5 drives pinion 8 to rotate (number is than 3:1), cam 11 on pinion shaft 9 is thereupon corresponding carries out set angle rotation, the convex surface of cam 11 of setting makes corresponding limit switch complete often to open, normally closed action, exports the signal of telecommunication.
Embodiment two
As shown in Figure 1-Figure 3, for the steam turbine switch enclosure of fire generating, comprise box body 1, driving lever 2, gear wheel 5, pinion 8 and connecting terminal block 15, the front of box body 1 is provided with polyester transparent plate 4, the side of box body 1 inside is provided with L plate 7, the top of L plate 7 is provided with U-shaped plate 14, U-shaped plate 14 is provided with connecting terminal block 15, L plate 7 is connected with Large Gear Shaft 6, Large Gear Shaft 6 passes box body 1 and is connected with driving lever 2, gear wheel 5 is arranged in Large Gear Shaft 6, gear wheel 5 engages with pinion 8 and arranges up and down, gear wheel 5 and pinion 8 are helical teeth structure, pinion 8 is arranged on pinion shaft 9, pinion shaft 9 passes L plate 7 and the two ends of pinion shaft 9 are all connected with box body 1, pinion shaft 9 is provided with double loop travel switch and/or single loop travel switch, double loop travel switch comprises automatic centering expansion coupling sleeve 10, cam 11 and heat resistant type double loop limit switch 12, several automatic centering expansion coupling sleeves 10 are sleeved on pinion shaft 9, automatic centering expansion coupling sleeve 10 is provided with cam 11, cam 11 contacts with heat resistant type double loop limit switch 12, heat resistant type double loop limit switch 12 is fixed on U-shaped plate 14, and heat resistant type double loop limit switch 12 is connected with connecting terminal block 15, single loop travel switch comprises automatic centering expansion coupling sleeve 10, cam 11 and Half Close Plant Type of Hybrid encapsulation switch 13, several automatic centering expansion coupling sleeves 10 are sleeved on pinion shaft 9, automatic centering expansion coupling sleeve 10 is provided with cam 11, cam 11 and Half Close Plant Type of Hybrid encapsulate switch 13 and contact, Half Close Plant Type of Hybrid encapsulation switch 13 is fixed on U-shaped plate 14, and Half Close Plant Type of Hybrid encapsulation switch 13 is connected with connecting terminal block 15, automatic centering expansion coupling sleeve 10 is a kind of keyless joint devices, and its principle and purposes are the effects by high strength tension bolt, between inner ring and axle, between outer shroud and wheel hub, produce huge enclasping force, to realize the keyless joint of parts and axle, make driving lever 2 along axis rotation (being not more than 90 degree) when steam turbine valve backward stick action, shift lever axis drives gear wheel 5 to rotate, gear wheel 5 drives pinion 8 to rotate (number is than 3:1), cam 11 on pinion shaft 9 is thereupon corresponding carries out set angle rotation, the convex surface of cam 11 of setting makes corresponding limit switch complete often to open, normally closed action, exports telecommunications.
The present invention have passed through a large amount of performance tests and reliability test, namely can be used for nuclear power generation, can be used for again fire generating, enormously simplify the structure of external product, achieve and achieve more output function with less parts, overall lightweight, reduce production cost, promote cost performance, more surmounted the performance of external product, this technology is no longer abroad monopolized, and is greatly beneficial to the development of domestic generating cause.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. steam turbine switch enclosure, it is characterized in that: comprise box body (1), driving lever (2), gear wheel (5), pinion (8) and connecting terminal block (15), the side of box body (1) inside is provided with L plate (7), the top of L plate (7) is provided with U-shaped plate (14), U-shaped plate (14) is provided with connecting terminal block (15), L plate (7) is connected with Large Gear Shaft (6), Large Gear Shaft (6) passes box body (1) and is connected with driving lever (2), gear wheel (5) is arranged in Large Gear Shaft (6), gear wheel (5) engages with pinion (8) and arranges up and down, pinion (8) is arranged on pinion shaft (9), pinion shaft (9) through L plate (7) and the two ends of pinion shaft (9) be all connected with box body (1), pinion shaft (9) is provided with double loop travel switch and/or single loop travel switch,
Double loop travel switch comprises automatic centering expansion coupling sleeve (10), cam (11) and heat resistant type double loop limit switch (12), several automatic centering expansion coupling sleeves (10) are sleeved on pinion shaft (9), automatic centering expansion coupling sleeve (10) is provided with cam (11), cam (11) contacts with heat resistant type double loop limit switch (12), heat resistant type double loop limit switch (12) is fixed on U-shaped plate (14), heat resistant type double loop limit switch (12) is connected with connecting terminal block (15),
Single loop travel switch comprises automatic centering expansion coupling sleeve (10), cam (11) and Half Close Plant Type of Hybrid encapsulation switch (13), several automatic centering expansion coupling sleeves (10) are sleeved on pinion shaft (9), automatic centering expansion coupling sleeve (10) is provided with cam (11), cam (11) and Half Close Plant Type of Hybrid encapsulate switch (13) and contact, Half Close Plant Type of Hybrid encapsulation switch (13) is fixed on U-shaped plate (14), and Half Close Plant Type of Hybrid encapsulation switch (13) is connected with connecting terminal block (15).
2. steam turbine switch enclosure according to claim 1, is characterized in that: the front of described box body (1) is provided with polyester transparent plate (4).
3. steam turbine switch enclosure according to claim 1, is characterized in that: described gear wheel (5) and pinion (8) are straight tooth structure.
4. steam turbine switch enclosure according to claim 3, it is characterized in that: described driving lever (2) is installed with jaw clutch (3), jaw clutch (3) is sleeved on Large Gear Shaft (6) and goes up and the outside being positioned at box body (1).
5. steam turbine switch enclosure according to claim 1, is characterized in that: described gear wheel (5) and pinion (8) are helical teeth structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305781.XA CN104835663B (en) | 2015-06-05 | 2015-06-05 | Steam turbine switch enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305781.XA CN104835663B (en) | 2015-06-05 | 2015-06-05 | Steam turbine switch enclosure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104835663A true CN104835663A (en) | 2015-08-12 |
| CN104835663B CN104835663B (en) | 2017-03-01 |
Family
ID=53813482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510305781.XA Active CN104835663B (en) | 2015-06-05 | 2015-06-05 | Steam turbine switch enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104835663B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404062A (en) * | 2018-12-08 | 2019-03-01 | 庞厚星 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3480746A (en) * | 1966-12-15 | 1969-11-25 | Rotork Controls | Control units for valve actuators |
| CN1213754A (en) * | 1997-10-03 | 1999-04-14 | 西部电机株式会社 | Actuating device for valve drive |
| CN1997845A (en) * | 2004-04-02 | 2007-07-11 | Itt制造企业公司 | Actuator with interrupter-type limit switches |
| KR100886961B1 (en) * | 2008-09-29 | 2009-03-09 | 주식회사알피엠텍 | Hydraulic actuators for multi-turn |
| CN102913667A (en) * | 2012-09-20 | 2013-02-06 | 常州电站辅机总厂有限公司 | Nuclear-grade direct-current valve electric device for pressurized water reactor nuclear plant |
| CN204651193U (en) * | 2015-06-05 | 2015-09-16 | 哈尔滨汽轮机厂有限责任公司自动控制工程分公司 | Steam turbine switch enclosure |
-
2015
- 2015-06-05 CN CN201510305781.XA patent/CN104835663B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3480746A (en) * | 1966-12-15 | 1969-11-25 | Rotork Controls | Control units for valve actuators |
| CN1213754A (en) * | 1997-10-03 | 1999-04-14 | 西部电机株式会社 | Actuating device for valve drive |
| CN1997845A (en) * | 2004-04-02 | 2007-07-11 | Itt制造企业公司 | Actuator with interrupter-type limit switches |
| KR100886961B1 (en) * | 2008-09-29 | 2009-03-09 | 주식회사알피엠텍 | Hydraulic actuators for multi-turn |
| CN102913667A (en) * | 2012-09-20 | 2013-02-06 | 常州电站辅机总厂有限公司 | Nuclear-grade direct-current valve electric device for pressurized water reactor nuclear plant |
| CN204651193U (en) * | 2015-06-05 | 2015-09-16 | 哈尔滨汽轮机厂有限责任公司自动控制工程分公司 | Steam turbine switch enclosure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404062A (en) * | 2018-12-08 | 2019-03-01 | 庞厚星 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
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| Publication number | Publication date |
|---|---|
| CN104835663B (en) | 2017-03-01 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jin Hongwei Inventor after: Liu Xiandong Inventor after: Guo Dejun Inventor after: Fan Wenjin Inventor after: Zhang Shaokang Inventor after: Luo Zhenkun Inventor after: Zhao Zhiming Inventor after: Pang Houxing Inventor before: Jin Hongwei Inventor before: Liu Xiandong Inventor before: Guo Dejun Inventor before: Fan Wenjin Inventor before: Zhang Shaokang Inventor before: Luo Kun Inventor before: Zhao Zhiming Inventor before: Pang Houxing |
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| GR01 | Patent grant |