CN103410605B - A kind of 1E level diesel generating set - Google Patents
A kind of 1E level diesel generating set Download PDFInfo
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- CN103410605B CN103410605B CN201310363568.5A CN201310363568A CN103410605B CN 103410605 B CN103410605 B CN 103410605B CN 201310363568 A CN201310363568 A CN 201310363568A CN 103410605 B CN103410605 B CN 103410605B
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Abstract
The present invention relates to nuclear power station security level emergency power system, a kind of 1E level diesel generating set is provided, comprises diesel engine, generator, flywheel guard, elastic coupling flexible coupling, public base, vibration isolator, startup air motor, automatically controlled group, battery pack, external cooling unit.The impact of present system torsional oscillation is little, vibration damping anti-seismic performance is good, startup reliability is high, good cooling results, output power range are wide, all can start in scheduled time when earthquake occurs and (or) after earthquake, automatic or manual band carries continuous operation, meets the demand of emergency power system to unit performance and various power.
Description
Technical field
The present invention relates to nuclear power station security level emergency power system, particularly relate to a kind of 1E level diesel generating set.
Background technique
1E level diesel generating set is mainly used in the safe level emergency power system of nuclear power station or other land nuclear facility, the system equipment of being correlated with to safe level system equipment and safe level when nuclear power station or other land nuclear facility loss of off-site power provides power supply, with the such as the following predetermined function of limit value ensureing realization response heap safe shutdown, Residual heat removal, prevent radioactive material release or keep radioactive material concentration to specify at accident conditions.
During service life, can the on-site of the rational expectation maximum ground that may suffer move, be called operating basis earthquake (OBE); The maximum earthquake that on-site may suffer, is called safe shutdown earthquake (SSE).1E level diesel generating set can bear OBE, SSE earthquake loading, all can start in scheduled time when earthquake occurs and (or) after earthquake, and automatic or manual band carries continuous operation.
1E level diesel generating set must meet following primary condition: the Nuclear safety class of diesel engine and major mechanical supplementary equipment thereof is SC level, and the Nuclear safety class of generator and essential electrical supplementary equipment thereof is 1E level; The seismic behavior of diesel generating set is I class, and the quality guarantee grade of diesel generating set is QA1 level.
In patented technology, China Patent No. is the patent of invention of 200610116635.3, patent name is a kind of nuclear safe level diesel generating set, comprise generator, diesel engine, starting storage battery group, quake-proof seat, cooling water tank, yielding rubber pad, mounting base, basis, the control cabinet of the system intergration and switch cubicle, its major character is positioned to one in: diesel engine and generator by flywheel guard and connecting sleeve centering, and namely the flywheel guard of diesel engine is connected with bolt with the connecting sleeve of generator; Quake-proof seat is the public base of diesel engine and generator, direct mounting diesel engine, generator and cooling water tank on this public base, and its structure is the steel structure frame of a rigidity; Yielding rubber pad is arranged between quake-proof seat and installation foundation base plate, and namely yielding rubber pad is arranged on quake-proof seat bottom surface and is fixed on mounting base; Starting storage battery group arrange near diesel engine starting motor place basis on and to being fixed.
In correlative theses, a kind of nuclear safe level diesel generating set of the paper of Zhuan Yanping, Cai Hangrong " a kind of nuclear safe level diesel generating set ", the nuclear safe level diesel generating set technical characteristics that its technical characteristics and foregoing invention patent describe is basically identical, belongs to the technical paper relevant to its patent that Ketai Electric Power Apparatus (Shanghai) Co., Ltd. delivers.
Although technique scheme solves the basic demands such as the necessary shockproof requirements of 1E level diesel generating set, but still has the following disadvantages:
1. diesel generating set is by the damping of yielding rubber pad, and it is high temperature resistant, cryogenic property is poor, easily aging by temperature, oil, ozone etc. corrode, and is generally 5 ~ 10 years its working life, and along with the prolongation of time, its anti-seismic performance is deteriorated;
2. started by an electric motor, unit starting reliability is poor.
3. diesel generating set depends on the blast-cold of axle band fan and is arranged on cooling water tank on fuselage to realize unit heat radiation, and its heat dissipating capacity is disposed to diesel engine indoor, and cause diesel engine room temperature higher, operator's working environment is poor; Depend on axle band fan and cooling water tank heat radiation in addition, the heat that can take away is relatively little, and cooling effect is poor, is not therefore suitable for high-power diesel generator set, and applicable diesel generating set rated power is generally no more than 2000kW.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of torsional oscillation is provided to affect little, that vibration damping anti-seismic performance is good, startup reliability is high, good cooling results, output power range are wide 1E level diesel generating set, all can start in scheduled time when earthquake occurs and (or) after earthquake, automatic or manual band carries continuous operation, meets the demand of emergency power system to unit performance and various power.
To achieve these goals, the present invention is by the following technical solutions:
A kind of 1E level diesel generating set, comprises diesel engine, generator, flywheel guard, elastic coupling flexible coupling, public base, vibration isolator, startup air motor, automatically controlled group, battery pack, external cooling unit.
Diesel engine and generator are positioned to one by flywheel guard, elastic coupling flexible coupling centering; Described flywheel guard is the stiff case for preventing foreign object from invading Flywheel disc being arranged at Flywheel disc outside;
Public base is by the rigidity mountion plate of Plate Welding, and diesel engine, generator bolt are rigidly fixed on public base;
Vibration isolator by bolt arrangement between public base and factory building pedestal;
Start air motor to arrange on a diesel engine and to being fixed;
Automatically controlled group to be arranged on the pedestal in the other or factory building monitoring chamber of diesel engine and to being fixed;
Battery pack to be arranged on the factory building pedestal near automatically controlled group and to being fixed;
On the pedestal that external cooling unit is arranged in factory building outside, diesel generating set place and to being fixed.
In above-mentioned 1E level diesel generating set, described public base is the U-shaped frame structure of a rigidity, comprise one to be welded the wet sump formed by front end-plate, base plate, side plate, dividing plate, and be provided with reinforcement gusset, position, both sides is provided with deep floor.
In above-mentioned 1E level diesel generating set, described vibration isolator is metal spring vibration isolator.Alternatively scheme, described vibration isolator is steel-wire isolator.Alternatively scheme, described vibration isolator is air-bag shock absorber.
In above-mentioned 1E level diesel generating set, described automatically controlled group comprises a gate out switch cabinet, a speeds control cabinet, an auxiliary control cabinet, two machine set control cabinets, direct current cabinets.
In above-mentioned 1E level diesel generating set, described startup air motor has two, is arranged in diesel engine flywheel dish both sides.
In above-mentioned 1E level diesel generating set, described external cooling unit is air-cooled radiator.Alternatively scheme, described external cooling unit is water cooling heat exchanger.
In above-mentioned 1E level diesel generating set, battery pack is lead-acid batteries.
The present invention has following beneficial effect compared with prior art:
1. diesel engine is connected by flywheel guard and elastic coupling flexible coupling with generator, and unit integral rigidity is good, accuracy of alignment is higher, axle system warping stress is relatively little, can slow down shafting torsional oscillation in unit running process.
2. vibration isolator excellent performance, long service life, vibrating isolation system natural frequency are low, effectively can prevent unit itself s mechanical vibration from damaging, can also effectively intercept and cushion the impact of seismic waves on unit simultaneously.
3. unit starting reliability is high, and larger improves the usability of unit when earthquake occurs and (or) after earthquake, and unit energy is startup optimization in 20s after the earthquake.
4. diesel generating set good cooling results, less to the heat affecting of environment, rated output power range of choice is wide, is applicable to the nuclear power station of various power demand.
Accompanying drawing explanation
Fig. 1 is a kind of 1E level diesel generating set composition schematic diagram of the present invention.
Fig. 2 is common base structure schematic diagram of the present invention.
Fig. 3 is the composition schematic diagram of the metal spring vibration isolator of the embodiment of the present invention 1.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the composition schematic diagram of the steel-wire isolator of the embodiment of the present invention 2.
Fig. 6 is the left view of Fig. 5.
Fig. 7 is the composition schematic diagram of the air bag vibration isolator of the embodiment of the present invention 3.
Fig. 8 is the plan view of Fig. 7.
The name that in figure, each figure number is corresponding is called: 1-diesel engine, 2-generator, 3-flywheel guard, 4-elastic coupling flexible coupling, 5-public base, 6-vibration isolator, 7-starts air motor, the automatically controlled group of 8-, 9-battery pack, 10-external cooling unit, 11-front end-plate, 12-installation panel, 13-base plate, 14-side plate, 15-dividing plate, 16-strengthens gusset, 17-deep floor, 21-upper bracket, 22-damper, 23-metal spring, 24-lower support frame, 25-bolt, 26-nut, 31-punch holder, 32-wire rope, 33-die holder, 34-locking nut, 41-upper mounting plate, 42-clamping protection device, 43-air bag, 44-lower installation board, 45, locking nut, 46-gas supplementing opening.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technological scheme of the present invention is described further.
Embodiment 1:
As shown in Figure 1 and Figure 2, a kind of 1E level diesel generating set that the present embodiment provides, comprises diesel engine 1, generator 2, flywheel guard 3, elastic coupling flexible coupling 4, public base 5, vibration isolator 6, starts air motor 7, automatically controlled group 8, battery pack 9, external cooling unit 10.
Diesel engine 1 and generator 2 are positioned to one by flywheel guard 3, elastic coupling flexible coupling 4 centering, namely the output flange of diesel engine is connected by elastic coupling flexible coupling with the driving flange of generator, diesel-engine body is connected by flywheel guard with generator frame, both ensure that integral rigidity and the coaxality of unit, again reduce the torsional vibration of diesel-electric set shaft system.
Public base 5 is by the rigidity mountion plate of Plate Welding, and diesel engine 1, generator 2 bolt is rigidly fixed on public base 5, forms an entirety, i.e. diesel generating set body.
Public base 5 is U-shaped frame structures of a rigidity, being provided with and strengthening gusset 16, having deep floor 17, for ensureing the strength and stiffness of public base at position, both sides in intermediate portion.
Public base 5 has one to weld by front end-plate 11, base plate 13, side plate 14, dividing plate 15 space formed, and is referred to as wet sump, for storing lubricant oil necessary when diesel engine runs.
Vibration isolator 6 is arranged in below public base 5, is arranged on factory building pedestal by this body elasticity of diesel generating set by bolt.
As shown in Figure 3, vibration isolator 6 adopts metal spring vibration isolator, and vibration isolator 6 comprises upper bracket 21, damper 22, metal spring 23, lower support frame 24, bolt 25, nut 26.Described damper 22 is piston cylinder operator, and damper 22 is arranged between upper bracket 21, lower support frame 24, and bolt 25 inserts metal spring 23 lumen, is arranged between upper bracket 21, lower support frame 24.This type vibration isolator has the following advantages:
1. vibration damping anti seismic efficiency is good.The rigidity of metal spring vibration isolator and damping constant are determined primarily of the quantity of damper and metal spring, length, steel wire diameter, design according to vibration damping shockproof requirements, metal spring vibration damper can have less rigidity and larger damping ratio, adopt metal spring vibration isolator composition vibrating isolation system, natural frequency can be low to moderate 3Hz, lower than the diesel generating set vibrating isolation system natural frequency (5Hz) of current technology.Lower vibrating isolation system natural frequency, away from the natural frequency of unit body, both effectively can isolate the impact of unit itself s mechanical vibration, and avoided again the frequency of seismic waves peak value, ensure that good vibration damping anti-seismic performance.
2. adopt stainless steel material to make, the corrosion such as high temperature resistant, oily, sour, salt fog, high fatigue life, energy is for a long time in vibrational state work, and long service life, under normal circumstances can the unit body same life-span.
3. structure is simple, easy to maintenance.
Start air motor 7 to be arranged on diesel engine 1 and to being fixed, described startup air motor 7 has two, be arranged in diesel engine 1 Flywheel disc both sides, the described source of the gas needed for startup air motor is provided by two covers comperssed air starting system that is independent, redundancy respectively.Starting motor has the advantages such as volume is little, output torque large, startup is rapid, long service life, and every air motor that only starts all can realize 100 continuous startup units and not break down, and each unit starting time is no more than 20s.By above-mentioned design, larger improves unit starting reliability, ensures that unit all can normally start when earthquake occurs and (or) after earthquake.
Automatically controlled group 8 to be arranged on the pedestal in the other or factory building monitoring chamber of diesel engine and to being fixed, automatically controlled group 8 comprises a gate out switch cabinet, a speeds control cabinet, an auxiliary control cabinet, two machine set control cabinets, a direct current cabinet, described gate out switch cabinet is mainly used in external out-put supply, speeds control cabinet is mainly used in diesel engine speed regulation and overspeed protection, auxiliary control cabinet is mainly used in controlling all kinds of required supplementary equipment of diesel engine, two machine set control cabinets are mainly used in the supervision of diesel generating set, control and protection (except overspeed protection), direct current cabinet is mainly used in providing DC control supply to diesel generating set body.
Battery pack 9 adopts lead-acid battery, for providing control power supply to automatically controlled group 8 and diesel generating set body.
External cooling unit 10 adopts air-cooled radiator, on the pedestal being arranged in factory building outside, diesel generating set place and to being fixed.The power source driving air-cooled radiator that diesel generating set exports, natural cold wind is blown into the gap of the radiating fin of air-cooled radiator, the heat of diesel generating set cooling water is passed to the air of diesel generator outdoor, reduce the cooling water temperature of diesel generating set, ensure that diesel generating set normally works.Because air-cooled radiator is arranged in diesel generator outdoor, its heat dissipating capacity can not accumulate in diesel motor compartment, and diesel generator room temperature can not be caused to raise, and operator's working environment is better; Air-cooled radiator is by power source driving in addition, and heat dissipating capacity configures according to demand, and cooling effect is better, is applicable to the cooling requirement of various power diesel generating set, and therefore diesel generating set output rated operating range is wider.
Embodiment 2:
In the present embodiment, vibration isolator 6 adopts steel-wire isolator, and all the other and embodiment 1 are roughly the same.
As shown in Figure 6, vibration isolator 6 comprises punch holder 31, wire rope 32, die holder 33, locking nut 34.Described punch holder 31, die holder 33 are opposite opened, and every part all has semicircle orifice, and wire rope penetrates punch holder 31, the middle circular hole of die holder 33, and fix with locking nut 34, and described wire rope 32 is hinged to form by Steel Wire Strand, forms ring-type.The rigidity of vibration damper and damping ratio depend primarily on wire rope and clamping plate, especially the length of the steel wire number of the diameter of wire rope, every circle, wire rope, hinge angle, the number of turn of wire rope and physical dimension, the material property of clamping plate.
The metal spring vibration isolator performance of this type vibration isolator and embodiment 1 is similar, there is good vibration damping anti-seismic performance, longer working life, the advantage such as convenient for installation and maintenance, because the damping ratio of steel-wire isolator is larger, damping effect is embodied in the dry friction of multiply twisting steel wire, the energy dissipated mainly concentrates on low frequency part, the level of response of the main peak value of low frequency can be suppressed, and seismic waves is larger at low frequency energy, impulse after the earthquake and can decay very soon, therefore the Performance Ratio embodiment 1 of steel-wire isolator in antidetonation adopts metal spring vibration isolator better effects if.
Embodiment 3:
In the present embodiment, vibration isolator 6 adopts air bag vibration isolator, and all the other and embodiment 1 are roughly the same.
As shown in Figure 7, vibration isolator 6 comprises upper mounting plate 41, clamping protection device 42, air bag 43, lower installation board 44, locking nut 45, gas supplementing opening 46.Air bag 43 is manufactured by tartan.Air is full of in air bag 43, when air bag 43 inner air pressure is lower than limit value, must by gas supplementing opening 46 to air bag 43 inner inflatable.
The rigidity of this type vibration isolator ensures mainly through the air bag 43 after inflation, its rigidity changes with air pressure difference, there is the features such as natural frequency is low, frequency-adjustable, bearing capacity strong, load adjustable scope is large, anti-vibration performance is excellent, this type vibration isolator is adopted to form vibrating isolation system, natural frequency can be low to moderate below 1Hz, more much lower than the diesel generating set natural frequency (5Hz) of current technology, has very excellent vibration damping anti seismic efficiency.But there is air bag gas leak phenomenon in this type vibration isolator, generally need according to arranging air compensating system initiatively, system complex, cost are higher.
Embodiment 4:
In the present embodiment, external cooling unit 10 adopts water cooling heat exchanger, and all the other and embodiment 1 are roughly the same.
When there is cooling water source near factory building, water cooling heat exchanger can be taked, cooling water source is provided to water cooling heat exchanger by the cooling water system of external security level, the heat of diesel generating set cooling water higher for temperature is passed to outside cooling water system by water cooling heat exchanger, reduce the cooling water temperature of diesel generating set, ensure that diesel generating set normally works.Adopt the cooling effect of water cooling heat exchanger more more excellent than embodiment 1, but higher to outside conditional request, need the external refrigeration system that cooling water source and safe level are provided.
Embodiment 5:
In the present embodiment, external cooling unit 10 adopts water cooling heat exchanger, and all the other and embodiment 2 are roughly the same.Do not repeat herein.
Embodiment 6:
In the present embodiment, external cooling unit 10 adopts water cooling heat exchanger, and all the other and embodiment 3 are roughly the same.Do not repeat herein.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
The present invention is more employs the term such as diesel engine 1, generator 2, flywheel guard 3, elastic coupling flexible coupling 4, public base 5, vibration isolator 6, startup air motor 7, automatically controlled group 8, battery pack 9, external cooling unit 10, but does not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Scope is not limited to above-described embodiment.
Claims (7)
1. a 1E level diesel generating set, comprises diesel engine, generator, flywheel guard, elastic coupling flexible coupling, public base, vibration isolator, startup air motor, automatically controlled group, battery pack, external cooling unit, it is characterized in that:
Diesel engine and generator are positioned to one by flywheel guard, elastic coupling flexible coupling centering;
Public base is by the rigidity mountion plate of Plate Welding, and diesel engine, generator bolt are rigidly fixed on public base; Described public base is the U-shaped frame structure of a rigidity, comprises one and is welded the wet sump formed by front end-plate, base plate, side plate, dividing plate, and be provided with reinforcement gusset, position, both sides is provided with deep floor;
Vibration isolator by bolt arrangement between public base and factory building pedestal;
Start air motor to arrange on a diesel engine and to being fixed; Described startup air motor has two, is arranged in diesel engine flywheel dish both sides;
On the pedestal that external cooling unit is arranged in factory building outside, diesel generating set place and to being fixed.
2. 1E level diesel generating set according to claim 1, it is characterized in that: described vibration isolator is metal spring vibration isolator, comprise upper bracket, damper, metal spring, lower support frame, bolt, nut, described damper is piston cylinder operator, damper arrangement is between upper bracket, lower support frame, described bolt inserts in metal spring chamber, is arranged between upper bracket, lower support frame.
3. 1E level diesel generating set according to claim 1, it is characterized in that: described vibration isolator is steel-wire isolator, comprise punch holder, wire rope, die holder, locking nut, described punch holder, die holder are opposite opened, every part all has semicircle orifice, and wire rope penetrates circular hole in the middle of punch holder, die holder, and fixes with locking nut, described wire rope is hinged to form by Steel Wire Strand, forms ring-type.
4. 1E level diesel generating set according to claim 1; it is characterized in that: described vibration isolator is air-bag shock absorber; comprise upper mounting plate, clamping protection device, air bag, lower installation board, locking nut, gas supplementing opening, described air bag is manufactured by tartan.
5. 1E level diesel generating set according to claim 1, is characterized in that: described battery pack is lead-acid batteries.
6. 1E level diesel generating set according to claim 1, is characterized in that: described external cooling unit is air-cooled radiator.
7. 1E level diesel generating set according to claim 1, is characterized in that: described external cooling unit is water cooling heat exchanger.
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| CN103410605B true CN103410605B (en) | 2015-12-02 |
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| EP2889877B1 (en) * | 2013-12-06 | 2021-03-10 | ITT Manufacturing Enterprises LLC | Seismic isolation assembly |
| CN208734792U (en) | 2014-09-24 | 2019-04-12 | 西门子公司 | It is used to support the device of electrical equipment |
| CN104929764B (en) * | 2015-06-02 | 2018-08-28 | 泰豪电源技术有限公司 | A kind of data center's diesel generating set that reliability is high |
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| CN105333056B (en) * | 2015-12-11 | 2017-06-23 | 国家电网公司 | Mitigate the method and vibration absorber used of high pressure gas machine vibration |
| CN106786798A (en) * | 2016-12-28 | 2017-05-31 | 雷天动力设备（苏州）有限公司 | A kind of high-power high voltage and machine diesel generating set |
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| CN107740844A (en) * | 2017-11-20 | 2018-02-27 | 胡杨雷 | A kind of generator with shock-absorbing function |
| CN113696810B (en) * | 2020-05-21 | 2022-10-14 | 北京机械设备研究所 | Building block type power supply vehicle |
| CN111980798B (en) * | 2020-07-09 | 2022-05-17 | 中国船舶重工集团公司第七O三研究所无锡分部 | Anti-seismic modularized SBO diesel generating set used in nuclear power station |
| CN113187602A (en) * | 2021-04-30 | 2021-07-30 | 中国船舶重工集团公司第七一一研究所 | Vibration isolation device and power generation module |
| CN115163985A (en) * | 2022-07-13 | 2022-10-11 | 陕西柴油机重工有限公司 | Anti-swing anti-tilting device of crude oil generator set |
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