CN101839173B - Manually-operated jigger mechanism for emergency power device of pressurized water reactor nuclear power station - Google Patents
Manually-operated jigger mechanism for emergency power device of pressurized water reactor nuclear power station Download PDFInfo
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- CN101839173B CN101839173B CN2010101860810A CN201010186081A CN101839173B CN 101839173 B CN101839173 B CN 101839173B CN 2010101860810 A CN2010101860810 A CN 2010101860810A CN 201010186081 A CN201010186081 A CN 201010186081A CN 101839173 B CN101839173 B CN 101839173B
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Abstract
The invention discloses a manually-operated jigger mechanism for an emergency power device of a pressurized water reactor nuclear power station, which comprises a manually-operated jigger switching device and a spring valve. The manually-operated jigger switching device is arranged on the emergency power device; the spring valve consists of a spring valve body and a spring valve seat and is also connected with a positioning mechanism; and the positioning mechanism is fixed to a diesel engine base and is pressed against the spring valve seat so as to prevent the spring valve seat from moving backwards relatively to the manually-operated jigger switching device. The manually-operated jigger mechanism avoids the phenomenon that the manually-operated jigger switching device make the spring valve seat move backwards in the prior art, so a distance between a pressure lever and the valve head is increased and a valve head cannot be pressed to cause a failure; and the spring valve has convenient operation and high reliability in a manual jigger switching process.
Description
Technical field
The invention belongs to million kilowatt advanced pressurized water reactor nuclear power technology field, relate to a kind of manual barring mechanism of emergency power equipment of nuclear power station, be specifically related to the manual barring mechanism of diesel engine of nuclear power station power generation system.
Background technique
The emergency power equipment of nuclear power station all needs the operating condition of jiggering inspection equipment after shutdown or before the start, and jiggering is divided into manual jiggering and auto-barring, does not cause device damage for the ease of inspection, at first will carry out manual jiggering.Below be to be that example specifies manual barring mechanism with the diesel power generation system.With reference to Fig. 1; It is the manual barring mechanism of diesel engine; Comprise be used for the diesel engine automatic mode convert into manual switching device and the spring valve 11 of manual work state '; Spring valve 11 ' be arranged on the diesel engine base 3`, manual switching device comprise the end be rotatably connected on depression bar 12 on the diesel engine base ', manual switching device just switches to the manual work state with the diesel engine automatic mode with spring valve 11 ' unlatching back.Manually the working principle of jiggering conversion is: through depression bar 12 ' rotation of jiggering manual switching device (safety turn); Depression bar 12 ' top pressure spring valve 11 ' valve head; Open spring valve 11 ' valve; The valve head that is about to spring valve is from unclamping roof pressure to impaction state, thereby switches to the manual work state of diesel engine.
The 5th diesel engine of Daya Bay nuclear power plant be used for the spring valve 11 of jiggering manual switching device (safety turn) ' in operating process, once repeatedly can't open spring valve 11 ' valve, cause the jiggering fault.Check through the scene and analyze to find: be because firmly excessive to depression bar 12 ' rotation during operation; Cause the fixing spring valve 11 ' valve seat of nothing behind the jiggering manual switching device, to move; Make depression bar 12 ' with spring valve 11 ' the valve head spacing increase; Cause operating once more depression bar 12 ' rotation top pressure spring valve 11 ' valve head the time, can not push down valve head open spring valve 11 ' valve, and the fault of manual switch when having caused jiggering.In addition; After haveing this fault; In the in-situ processing with spring valve 11 ' valve seat adjust to the origin-location forward; Adjustment back depression bar 12 ' can push down valve head open spring valve 11 ' valve, spring valve 11 ' work recover normal, proved that simultaneously the fault immediate cause is because the design deficiency in essence of spring valve 11 ' valve body mobility causes moving behind the spring valve base.But after still can not fundamentally solving spring valve, the position of readjusting spring valve after each fault moves problem.
Through retrieval; The Chinese patent of notification number CN2729320 Y discloses the " electric barring equipment that uses during a kind of Turbo-generator Set maintenance; this device comprises: motor; motor-driven retarder, the transmission device that is connected with retarder, and position adjustment structure and base plate, this base plate have the hole of installation transmission device and the slotted hole that is connected with the flange of the former work jiggering of installation.The unexposed technical characteristics of the present invention of this patent is the existing technology of this patent.
The Chinese patent of notification number CN2107537U discloses " a kind of internal combustion locomotive is used electric barring ", and this jiggering adopts cycloidal planetary gear speed reducer as power plant, and base is fixed in the locomotive floor with the card cable.The unexposed technical characteristics of the present invention of this patent is the existing technology of this patent.
The Chinese patent of notification number CN2295056Y discloses " a kind of engine starting gear "; It comprises remontoir, starting control mechanism, energy storage automatic spacing mechanism and automatic-separation mechanism; Energy storage automatic spacing mechanism is stirred by sheave and is spacing; The wind up end of driving lever positive stop is provided with a decompression and discharges pin, and pin matches with a decompression release linkage, is provided with the slide device of a slippage vertically between the pusher dog of automatic-separation mechanism and pto; The unexposed technical characteristics of the present invention of this patent is the existing technology of this patent.
Above-mentioned patent does not have the technical characteristics identical with this patent.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment; After making the spring valve seat, moves by the depression bar that can avoid existing technology mid-game driver to move conversion equipment; Thereby make depression bar and valve head spacing increase the fault that to push down valve head and cause, and this spring valve is easy to operate in jiggering manual switch process, reliability is high.
For solving the problems of the technologies described above; Technological scheme of the present invention is: a kind of manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment, be included in the jiggering manual switching device, the spring valve that are provided with on the emergency power equipment, and spring valve is made up of spring valve valve body and spring valve valve seat; Spring valve also is connected with positioning means; Said positioning means is fixed on the emergency power equipment, and the top pressure spring valve base, prevents to move after the spring valve seat is with respect to the jiggering manual switching device.
Said positioning means comprises fixing part and roof pressure portion, and fixing part is fixed on the emergency power plant bottom case, and roof pressure portion is arranged at the back of spring valve valve seat, is positioned on the elongation line of depression bar roof pressure movement locus of jiggering manual switching device.
Said positioning means is L shaped baffle plate, and orthogonal two parts of L shaped baffle plate are respectively fixing part and roof pressure portion.
The connecting part of fitting with said spring valve valve seat side is extended to spring valve valve seat both sides by the roof pressure portion of said L shaped baffle plate, and the structure to spring valve valve seat semi-surrounding is formed in the roof pressure portion of L shaped baffle plate and connecting part.
Said connecting part is right baffle-plate, the right baffle plate that is provided with in said spring valve valve seat both sides.
The fixing part of said L shaped baffle plate is fixed on the emergency power plant bottom case header board; The roof pressure portion end face of said L shaped baffle plate flushes with the spring valve end face.
The parallel sided that said positioning means side and spring valve valve seat are close to, and the gap≤0.5mm between the two.
The present invention has increased positioning means on the basis of existing manual barring mechanism; This positioning means is fixed on the emergency power plant bottom case; The positioning means roof pressure has limited the motion of spring valve valve seat on the spring valve valve seat, prevent behind the spring valve pressurized with respect to moving behind the jiggering manual switching device.The valve head spacing of the depression bar of jiggering manual switching device and spring valve can not increase yet, thereby has solved the problem that the spring valve valve can't be opened, thereby has avoided the generation of jiggering fault.
Because positioning means is to be fixed on the emergency power plant bottom case through its fixing part; Therefore positioning means keeps motionless, and the roof pressure portion of positioning means is positioned at the back of spring valve valve seat, promptly on the elongation line of the depression bar roof pressure movement locus of jiggering manual switching device; Its strength and depression bar to the spring valve roof pressure is opposite to the pressure direction of spring valve valve head; Balance out pressure excessive when operating depression bar, thereby keep spring valve not move, avoid the jiggering fault.The position of positioning means setting neither influences spring valve works normally, plays the effect of stop again.
In order to make the spring valve involuntary movement; Except behind the spring valve valve seat, being provided with the roof pressure portion; Also extend along spring valve valve seat both sides in roof pressure portion both sides the connecting part is set, the connecting part forms the semi-surrounding structure with roof pressure portion, makes it can not voltuntary movement the spring valve parcel.And the parallel sided that the side, connecting part of positioning means and spring valve valve seat are close to, and the gap≤0.5mm between the two.The gap of the two space of little spring valve more is just more little, and the reliability of the operation of jiggering manual switching device is just high more.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is that the embodiment of the invention is installed in the key plan on the emergency power equipment;
Fig. 3 is the structural representation of embodiment of the invention positioning means;
Fig. 4 is the lateral plan of embodiment of the invention positioning means;
Fig. 5 is an A-A place sectional view among Fig. 2.
Embodiment
Below be that example specifies the present invention with the diesel power generation system.
Like Fig. 2,3,4, shown in 5, a kind of manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment is the manual jiggering that is used for diesel power generation system diesel engine.Manually barring mechanism comprises jiggering manual switching device, spring valve; Spring valve 1 comprises spring valve valve body, spring valve valve seat 11; Spring valve 1 also is connected with positioning means 2; Said positioning means 2 is fixed on the diesel engine base 3, and top pressure spring valve base 11, prevents to move after spring valve valve seat 11 is with respect to the jiggering manual switching device.
Like Fig. 3,4, shown in 5, said positioning means 2 comprises fixing part 21 and roof pressure portion 22, and the positioning means 2 of present embodiment is L shaped baffle plate, and orthogonal two parts of L shaped baffle plate are respectively fixing part 21 and roof pressure portion 22.Wherein have mounting hole 25 on the fixing part 21; Bolt 26 is installed in the through hole of offering on mounting hole 25 and diesel engine base 3 header boards; Cooperate with nut 27 positioning means 2 is fixed on diesel engine base 3 header boards; Roof pressure portion 22 is arranged at the back of spring valve valve seat 11, and roof pressure portion 22 end faces flush with spring valve 1 end face, and its underpart cooperates with spring valve valve seat 11 bottoms.Said positioning means 2 can also be the locating columns of fitting with spring valve valve seat 11 that on the elongation line of depression bar 5 roof pressure movement locus, are provided with, push rod etc.
The roof pressure portion 22 of positioning means is positioned on the elongation line of depression bar 5 roof pressure movement locus of jiggering manual switching device.Its pressure direction to the strength of spring valve 1 roof pressure and 5 pairs of spring valve valve heads of depression bar is opposite; Balance out pressure excessive when operating depression bar 5; Thereby keep spring valve 1 behind pressurized, not move, and carry out manual switch next time and can effectively open spring valve 1, avoid the jiggering fault.
The side of the roof pressure portion 22 of said L shaped baffle plate is the plane, and the side that itself and spring valve valve seat 11 are close to parallels, and the gap≤0.5mm between roof pressure portion 22 sides and spring valve 11 sides.The gap of the two space of little spring valve more is just more little, and the stability of spring valve 1 is just high, and the reliability of the operation of jiggering manual switching device is just high more.
Like Fig. 2,3,4, shown in 5; The connecting part 23 of fitting with said spring valve valve seat 11 sides is extended to spring valve valve seat 11 both sides by the roof pressure portion 22 of said L shaped baffle plate, the roof pressure portion 22 of L shaped baffle plate and the structure of connecting part 23 compositions to spring valve valve seat 11 semi-surroundings.Connecting part 23 is specially right baffle-plate, the right baffle plate that is provided with in said spring valve valve seat both sides.Right baffle-plate, right baffle plate and roof pressure portion 22 just realize the location to spring valve valve seat 11 together on three directions.
Owing on said diesel engine base 3, be provided for the switching mechanism of nuclear power station emergency power equipment jiggering; Roof pressure through said positioning means 2 supports; Depression bar 5 does not move after can not making spring valve seat 11; Depression bar 5 can not increase with the valve head spacing yet, and the conversion reliability increases, thereby has avoided the generation of jiggering fault.
In the present embodiment, said positioning means 2 can bear 4.5KN (450kgf) back thrust and without male offspring seat move.Considered the human-machine operation power problem of ergonomics in the design.
Said positioning means 2 surfaces are provided with painting layer, said japanning color and diesel engine base solid colour.Paint is installed all finish paints of back should be even, careful, bright, the complete sum color and luster consistent, coarse injustice, holiday must not be arranged, wrongly coats with lacquer, defectives such as wrinkle pin hole and serious sagging.Paint film adhesion should meet the first quality requirement of regulation among the GB 9286.The japanning color with the base plate solid colour is installed, generally should meet the regulation of JB 2299.
The 5th diesel engine in Daya Bay nuclear power plant's emergency power equipment installs positioning means additional by above-mentioned improvement design proposal and installs; Thoroughly solved because of the excessive operation of exerting oneself causes the spring valve failure of removal of use for diesel engine in jiggering manual switch (safety turn), relevant speciality has been fed back and has progressively been adopted in factory.This design has remedied the design deficiency in essence that general spring valve valve body has mobility, with regard to the design and the type selecting of spring valve reference is arranged.
Claims (5)
1. manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment; Be included in the jiggering manual switching device, the spring valve that are provided with on the emergency power equipment; Spring valve is made up of spring valve valve body and spring valve valve seat, it is characterized in that: spring valve also is connected with positioning means, and said positioning means is fixed on the emergency power equipment; And the top pressure spring valve base, prevent to move after the spring valve seat is with respect to the jiggering manual switching device; Said positioning means is L shaped baffle plate, and orthogonal two parts of L shaped baffle plate are respectively fixing part and roof pressure portion; Fixing part is fixed on the emergency power plant bottom case, and roof pressure portion is arranged at the back of spring valve valve seat, is positioned on the elongation line of depression bar roof pressure movement locus of jiggering manual switching device.
2. the manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment as claimed in claim 1; It is characterized in that: the connecting part of fitting with said spring valve valve seat side is extended to spring valve valve seat both sides by the roof pressure portion of said L shaped baffle plate, and the structure to spring valve valve seat semi-surrounding is formed in the roof pressure portion of L shaped baffle plate and connecting part.
3. the manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment as claimed in claim 2 is characterized in that: right baffle-plate, the right baffle plate of said connecting part for being provided with in said spring valve valve seat both sides.
4. like each described manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment of claim 1～3, it is characterized in that: the fixing part of said L shaped baffle plate is fixed on the emergency power plant bottom case header board; The roof pressure portion end face of said L shaped baffle plate flushes with the spring valve end face.
5. like each described manual barring mechanism that is used for pressurized-water reactor nuclear power plant emergency power equipment of claim 1～3, it is characterized in that: the parallel sided that said positioning means side and spring valve valve seat are close to, and the gap≤0.5mm between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101860810A CN101839173B (en) | 2010-05-28 | 2010-05-28 | Manually-operated jigger mechanism for emergency power device of pressurized water reactor nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101860810A CN101839173B (en) | 2010-05-28 | 2010-05-28 | Manually-operated jigger mechanism for emergency power device of pressurized water reactor nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN101839173A CN101839173A (en) | 2010-09-22 |
| CN101839173B true CN101839173B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101860810A Expired - Fee Related CN101839173B (en) | 2010-05-28 | 2010-05-28 | Manually-operated jigger mechanism for emergency power device of pressurized water reactor nuclear power station |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103306816A (en) * | 2013-07-12 | 2013-09-18 | 潍柴重机股份有限公司重庆分公司 | Manual-operated jigger interlocking device for marine diesel engines |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446690Y (en) * | 2000-08-24 | 2001-09-05 | 北京第二开关厂 | Deform-proof keeper of equipment cabinet door |
| CN201031730Y (en) * | 2007-05-18 | 2008-03-05 | 卢殿高 | Locating type handle structure of small-sized electric generating set |
| CN201065773Y (en) * | 2007-08-31 | 2008-05-28 | 秦山第三核电有限公司 | Turbine jigger force-increasing device |
| CN101395364A (en) * | 2006-01-05 | 2009-03-25 | 费德罗―莫格尔公司 | Heat shield having locating and retention features |
| CN201317402Y (en) * | 2008-12-10 | 2009-09-30 | 于江龙 | Semi-trailer longitudinal beam with gusset plate |
-
2010
- 2010-05-28 CN CN2010101860810A patent/CN101839173B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446690Y (en) * | 2000-08-24 | 2001-09-05 | 北京第二开关厂 | Deform-proof keeper of equipment cabinet door |
| CN101395364A (en) * | 2006-01-05 | 2009-03-25 | 费德罗―莫格尔公司 | Heat shield having locating and retention features |
| CN201031730Y (en) * | 2007-05-18 | 2008-03-05 | 卢殿高 | Locating type handle structure of small-sized electric generating set |
| CN201065773Y (en) * | 2007-08-31 | 2008-05-28 | 秦山第三核电有限公司 | Turbine jigger force-increasing device |
| CN201317402Y (en) * | 2008-12-10 | 2009-09-30 | 于江龙 | Semi-trailer longitudinal beam with gusset plate |
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| CN101839173A (en) | 2010-09-22 |
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Owner name: GUANGDONG NUCLEAR POWER JOINT CO., LTD. Free format text: FORMER OWNER: CHINA GENERAL NUCLEAR GROUP CO., LTD. Effective date: 20141024 Owner name: CHINA GENERAL NUCLEAR GROUP CO., LTD. Free format text: FORMER OWNER: DAYAWAN NUCLEAR POWER RUNNING MANAGEMENT CO., LTD. Effective date: 20141024 |
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Owner name: CHINA GENERAL NUCLEAR GROUP CO., LTD. Free format text: FORMER NAME: CHINA GUANGDONG NUCLEAR POWER GROUP CO., LTD. |
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Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: DAYABAY NUCLEAR POWER OPERATIONS AND MANAGEMENT Co.,Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. Patentee before: DAYABAY NUCLEAR POWER OPERATIONS AND MANAGEMENT Co.,Ltd. |
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Effective date of registration: 20141024 Address after: 518031 Guangdong city of Shenzhen province Futian District science and technology building, Shangbu Road 15 Patentee after: GUANGDONG NUCLEAR POWER JOINT VENTURE Co.,Ltd. Patentee after: CHINA GENERAL NUCLEAR POWER Corp. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: CHINA GENERAL NUCLEAR POWER Corp. Patentee before: DAYABAY NUCLEAR POWER OPERATIONS AND MANAGEMENT Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |