CN207833319U - A kind of Generator Stator Cooling system with overpressure protection function - Google Patents
A kind of Generator Stator Cooling system with overpressure protection function Download PDFInfo
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- CN207833319U CN207833319U CN201820267213.4U CN201820267213U CN207833319U CN 207833319 U CN207833319 U CN 207833319U CN 201820267213 U CN201820267213 U CN 201820267213U CN 207833319 U CN207833319 U CN 207833319U
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- stator cooling
- water
- cooling water
- overpressure protection
- water level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a kind of Generator Stator Cooling systems with overpressure protection function, belong to Generator Stator Cooling technical field.The centrifugal pump, cooler and filter of the utility model are both provided with two, and a job, another spare；The water level transmitter of water level control unit is set on stator cooling water case, water level transmitter is electrically connected with the controller through multichannel AI modules, controller is electrically connected through DO modules with water supply solenoid valve, water supply solenoid valve is set in the moisturizing pipeline of stator cooling water case, and controller controls the opening and closing of water supply solenoid valve；The overflow pipe of automatic overflow unit is installed on stator cooling water case.The utility model increases stand-by equipment; largely reduce influence of the plant maintenance to normally producing, installs overpressure protection apparatus additional, also ensure in water charging system failure; continue to maintain in stator cooling water case that pressure is in zone of reasonableness automatically when moisturizing, so that it is guaranteed that engine health.
Description
Technical field
The utility model is related to Generator Stator Cooling technical fields, having overpressure protection more specifically to one kind
The Generator Stator Cooling system of function.
Background technology
Commonly used Turbo-generator Set in thermal power generation, as #3 Turbo-generator Sets be overcritical, primary centre again
Heat, single shaft, three cylinders, four exhaust condensing turbines.#3 generators use the Water hydrogen type of cooling, i.e. stator winding is water cooling
But.Water quality, water, hydraulic pressure, water temperature of cooling water needed for generator etc. are ensured by Stator Condense Water System.
Generator cooling-water control system uses closed cycle mode, so that continuous high purity water stream is passed through stator coil hollow
Conducting wire takes away coil loss.Water into generator unit stator is the qualified chemical demineralizing water that chemically workshop directly attracts.It fills into
The chemical demineralizing water of water tank finally enters water tank by solenoid valve, filter.
Currently, since cooling water quality is poor, centrifugal water pump, water cooler of middle-size and small-size METHOD FOR TURBOGENERATOR SET etc. are set
It is standby be easy to occur to block, leakage, the problems such as cooling effect is poor, often safeguard that not only labor intensity is big but also can influence normal
Production.In addition, booting preceding pipeline, valve, all elements of packaging and equipment want multiple flushing pollution discharge, until sampling of water quality chemical examination is closed
Chemical demineralizing water can be filled after lattice to electricity generator stator coil.Softened water in water tank is sent into tubular type after boosting by resistance to sour water pump
Then cooler, filter enter back into the collecting pipe of electricity generator stator coil, the heat of electricity generator stator coil is brought out again
Water tank is returned to, a closed cycle is completed.The ordinary water level of #3 Generator Stator Cooling water tanks be 550mm, need water level≤
450mm opens water supply solenoid valve, and water supply solenoid valve is closed in water level >=650mm.Under certain signal interference, stator may be caused to cool down
The high and low alarm signal failure of cistern water level, causes low water level signal not disappear, and water supply solenoid valve opens moisturizing for a long time, cooling
Water supply solenoid valve will not close when water tank full water, to cause stator cooling water case superpressure, cause Generator Stator Cooling water
Stick leakage damage generator.Therefore, in view of the safe operation of equipment, it is necessary to install superpressure additional to Generator Stator Cooling water tank and protect
Protection unit continues to maintain in stator cooling water case pressure in zone of reasonableness automatically when moisturizing to ensure in water charging system failure, from
And ensure engine health.
Through retrieval, China Patent No. ZL 201220549549.2, authorized announcement date is on April 10th, 2013, innovation and creation
It is entitled：A kind of cooling/heating systems for Turbo-generator Set, this application include several sweet-water tanks, Yi Jiyu
The connected desalination water pump of each sweet-water tank, the cooling system water inlet pipe of generator oil cooler group are connected with desalination water pump, cooling
System outlet pipe connects the cooling system water inlet pipe of air cooler of generators group, and the cooling system outlet pipe of air cooler group connects deoxygenation
The input terminal of device, and the output end of oxygen-eliminating device connection steam boiler water inlet, this application from solve water pipe be also easy to produce dirt,
The angle of corrosion is set out, and reduces the maintenance of water-cooling system, but cost of implementation is higher, is not easy to promote and apply.
China Patent No. ZL 201620676218.3, authorized announcement date are on 2 1st, 2017, and invention and created name is：
A kind of engine cooler；The water cooling babinet upper end of this application engine cooler is connected to water supply pipe, water cooling box
Body lower end is connected to Draw off valve, and overflow pipe one end is connect with water cooling babinet upper end, the overflow pipe other end and drainpipe
Connection.This application can effectively improve double water innercooling electric generator group water-cooling system safety, overcome under water charging system abnormal failure
Security risk realizes that equipment water level is automatic and the automation of tank pressure control.But main the setting by overflow pipe of this application
It sets, avoids full water in water cooling box body from influencing engine health operation, unlatching and the pass of water supply pipe are controlled according to moisturizing floating ball
It closes, there are certain hysteresis quality in control, still needs to be further improved.
Invention content
1. utility model technical problems to be solved
The purpose of the utility model is to overcome the above-mentioned problems of the prior art, provide a kind of with overpressure protection
The stator cooling system structure design of the Generator Stator Cooling system of function, the utility model is simple, increases stand-by equipment,
Also largely reduce influence of the plant maintenance to normally producing, overpressure protection is installed additional to Generator Stator Cooling water tank
Device also ensures in water charging system failure, continues to maintain in stator cooling water case pressure in zone of reasonableness automatically when moisturizing, from
And ensure engine health.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model is：
A kind of Generator Stator Cooling system with overpressure protection function of the utility model, including what is be sequentially connected are determined
The output channel of sub- cooling water tank, centrifugal pump, cooler and filter, filter connects generator, the centrifugal pump, cooling
Device and filter are both provided with two, and a job, another spare；And it is provided with water level control on the stator cooling water case
Unit and automatic overflow unit processed, wherein：
The water level control unit includes water level transmitter, multichannel AI modules, controller, DO modules and moisturizing electromagnetism
Valve, water level transmitter are set on stator cooling water case, and water level transmitter is electrically connected with the controller through multichannel AI modules, described
Controller be electrically connected with water supply solenoid valve through DO modules, water supply solenoid valve is set in the moisturizing pipeline of stator cooling water case,
Controller controls the opening and closing of water supply solenoid valve；
The automatic overflow unit includes an overflow pipe, which is installed on stator cooling water case.
It is further improved as the utility model, the water level control unit further includes isolator, and isolator
Be provided with it is multiple, water level transmitter signal circuit into multichannel AI modules end install additional isolator, other analog input signal circuits
Isolator is also installed additional into multichannel AI modules end.
It is further improved as the utility model, the controller uses DCS switch boards.
It is further improved as the utility model, the overflow pipe selects the stainless steel tube of a diameter of 89mm, should
The distance of the 650mm high water level of the distance from top stator cooling water case of overflow pipe is L1, and the value of L1 is 3.8-4.2m.
It is further improved as the utility model, the overflow pipe other end is inserted into the open adjutage in top
In, the depth that overflow pipe is inserted into adjutage is L2, and the value of L2 is 90-110mm.
It is further improved as the utility model, close to stator cooling water case water outlet on the overflow pipe
It is provided with isolating valve, efferent duct is connected below adjutage, row's trench is set below efferent duct.
It is further improved as the utility model, the stator cooling water case and one cycle of ion-exchanger composition
Flow cycle.
It is further improved as the utility model, three sets of conductances is set on the outlet pipe of the stator cooling water case
Rate meter and sensor.
3. advantageous effect
It is had the advantages that compared with existing known technology using technical solution provided by the utility model：
(1) a kind of Generator Stator Cooling system with overpressure protection function of the utility model, centrifugal pump, cooling
Device and filter are both provided with two, and a job, another spare, can be immediately when an equipment of work breaks down
Cut-in stand-by equipment uses, and will not be affected greatly to normally producing, and stator cooling water case is followed with ion-exchanger composition one
Ring flow cycle can in time remove foreign ion in the cooling water in stator cooling water case, the water outlet of stator cooling water case
Three sets of conductivity meters and sensor are set on pipe, then can be integrated in conjunction with the data that three sets of conductivity meters and sensor detect
Judge, ensures the accuracy rate of detection and control；
(2) a kind of Generator Stator Cooling system with overpressure protection function of the utility model, water level transmitter
Signal is sent to DCS controllers, and by judging, water supply solenoid valve opening moisturizing is controlled when water level is low；It closes and mends when water level is high
Water solenoid valve；DCS controls water supply solenoid valve steady operation, and water charging system is not easy to failure, can continue that stator is maintained to cool down automatically
Pressure is in zone of reasonableness in water tank, so that it is guaranteed that engine health；
(3) a kind of Generator Stator Cooling system with overpressure protection function of the utility model, in water level transmitter
Signal circuit installs isolator, the analog input signal of same multichannel AI modules, if there is interference source additional into DCS switch boards end
It when sealing in, will be isolated by isolator, to effectively prevent sealing in for interference signal, not interfere with stator cooling water case water
Position distorted signals further ensure that stator cooling water case is not in after water supply solenoid valve opens moisturizing for a long time
Superpressure phenomenon；
(4) a kind of Generator Stator Cooling system with overpressure protection function of the utility model, in stator cooling water
Automatic overflow pipe is installed on case additional, the height of the overpressure protection overflow pipe distance from top water tank is rationally set according to pressure in water tank
Meter will not cause water level to jump, to avoid stator cold even if causing a large amount of moisturizings in water charging system failure
But full water influences engine health operation in water tank；
(5) a kind of Generator Stator Cooling system with overpressure protection function of the utility model, design overflow pipe are another
One end is inserted into the open adjutage in top, and it is 90-110mm that overflow pipe, which is inserted into the depth of adjutage, can be good at preventing
There is " siphon " phenomenon in overflow when moisturizing；
(6) a kind of Generator Stator Cooling system with overpressure protection function of the utility model, structure design is simple,
Maintenance workload is few, and cost of implementation is low, belongs to the higher Generator Stator Cooling water tank overpressure protection scheme of cost performance.
Description of the drawings
Fig. 1 is the structure diagram of stator cooling water case water level control unit described in embodiment 1 in the utility model；
Fig. 2 is the structural schematic diagram of stator cooling water case automatic overflow unit in the utility model；
Fig. 3 is the structure diagram of stator cooling water case water level control unit described in embodiment 2 in the utility model；
Fig. 4 is the structure diagram of Stator Condense Water System in the utility model.
Label declaration in schematic diagram：
1, stator cooling water case；2, isolating valve；3, overflow pipe；4, adjutage；5, efferent duct.
Specific implementation mode
To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
In conjunction with Fig. 1, Fig. 2 and Fig. 4, a kind of Generator Stator Cooling system with overpressure protection function of the present embodiment,
Including stator cooling water case, centrifugal pump, cooler and the filter being sequentially connected, the output channel of filter connects generator,
Two stainless steel AC electrical centrifugal water pumps are specially set, and a job, one spare；Volume 2m3Stainless steel stator it is cold
But one, water tank；Stainless steel tubular type water cooler two, a job, one spare.XLS-100 stainless steel water filters, one
Platform works, and one spare.Ion-exchanger is a set of；Three sets of conductivity meters and sensor.It breaks down in an equipment of work
When can immediately cut-in stand-by equipment use, will not be affected greatly to normally producing.Stator cooling water case and ion exchange
Device forms a circulation circuit, can in time remove foreign ion in the cooling water in stator cooling water case, stator cooling
Three sets of conductivity meters and sensor are set on the outlet pipe of water tank, then the number that can be detected in conjunction with three sets of conductivity meters and sensor
According to comprehensive descision is carried out, ensure the accuracy rate of detection and control.
It is provided with water level control unit and automatic overflow unit on the stator cooling water case, wherein：
The water level control unit includes water level transmitter, multichannel AI modules, controller, DO modules and moisturizing electromagnetism
Valve, water level transmitter are set on stator cooling water case 1, and water level transmitter is electrically connected with the controller through multichannel AI modules, control
Device processed uses DCS switch boards, multichannel AI modules also to receive other analog input signals.The controller is through DO modules and benefit
Water solenoid valve is electrically connected, and water supply solenoid valve is set in the moisturizing pipeline of stator cooling water case 1, water level transmitter signal send to
DCS controllers control water supply solenoid valve opening moisturizing when water level is low by judging；Water supply solenoid valve is closed when water level is high,
DCS controls water supply solenoid valve steady operation, and water charging system is not easy to failure, can continue to maintain pressure in stator cooling water case automatically
In zone of reasonableness, so that it is guaranteed that engine health.
The automatic overflow unit includes an overflow pipe 3, isolating valve 2 and adjutage 4, which is installed in stator
On cooling water tank 1.In the side suitable position trepanning (φ 89mm) of 1 heating rod of stator cooling water case, overpressure protection overflow is installed
Pipe 3, the overflow pipe 3 select the stainless steel tube of a diameter of 89mm, the distance from top stator cooling water case 1 of the overflow pipe 3
The distance of 650mm high water level is L1, and the value of L1 is 4m in the present embodiment.Overflow forms " siphon " when moisturizing in order to prevent, overflows
3 other end of flow tube is inserted into the open adjutage in top 4, and the depth that overflow pipe 3 is inserted into adjutage 4 is L2, L2 in the present embodiment
Value be 100mm, adjutage 4 make holder.1 water outlet of stator cooling water case is being provided with isolation on overflow pipe 3
Valve 2,4 lower section of adjutage connect efferent duct 5,5 lower section setting row's trench of efferent duct, and row's trench selects the free of contamination condensation of free from dust
The solution space of pump sump trench is installed.The present embodiment has installed automatic overflow pipe 3 additional on stator cooling water case 1, which protects
The height of shield 3 distance from top water tank of overflow pipe is rationally designed according to pressure in water tank, even if being caused in water charging system failure
In the case of a large amount of moisturizings, water level will not be caused to jump, to avoid full water in stator cooling water case 1 from influencing engine health
Operation.
In addition, all pipelines of automatic overflow unit of the present embodiment, pipe fitting inner wall application water rinse well after, it is empty with compression
Air-blowing is net, and groove is answered smooth and uniform (30 ° of bevel angle) using mechanical processing, needed conscientiously to check before counterpart, whether size meets
It is required that；The dirts such as greasy dirt, burr within the scope of groove inside and outside wall 15~20mm of both sides are cleared up, until exposing metallic luster；And it clears up
Foreign matter, impurity in pipe.Capping is filled using GTAW argon tungsten-arc welding bottoming+SMAW welding electrode arc welding, welding wire should be removed before weldering
Oil, the rust on surface, and holding surface is dried；Welding rod is baked by regulation before weldering, weld seam table is conscientiously checked after the completion of welding
Rounding off is answered in face with base material, and the surface defects such as no undercut, slag inclusion, stomata, arc crater will fill up when receiving arc.
Embodiment 2
A kind of Generator Stator Cooling system with overpressure protection function of the present embodiment, substantially with embodiment 1, no
It is with place：Referring to Fig. 3, it is a closed container, water level signal and other simulations in view of existing Generator Stator Cooling water tank 1
Input signal shares one piece of multichannel AI module will cause 1 water of stator cooling water case if other signals seal in interference signal
Position distorted signals, leads water supply solenoid valve moisturizing always, causes 1 superpressure of Generator Stator Cooling water tank.It causes to generate electricity when serious
Machine bar leak, critical generating set safe operation.In 1 water level transmitter signal circuit of stator cooling water case into multichannel AI moulds
Isolator is installed at part end, and isolator is provided with multiple, other analog input signal circuits also install additional into multichannel AI modules end
Isolator.After installing isolator additional, the analog input signal of same multichannel AI modules will when being sealed in if there is interference source
It is isolated by isolator, to effectively prevent sealing in for interference signal, does not interfere with the mistake of 1 water level signal of stator cooling water case
Very, after water supply solenoid valve opens moisturizing for a long time, it further ensure that stator cooling water case is not in superpressure phenomenon.
Embodiment 3
A kind of Generator Stator Cooling system with overpressure protection function of the present embodiment, substantially with embodiment 2, no
It is with place：The distance of the 650mm high water level of the distance from top stator cooling water case 1 of overflow pipe 3 is 3.8m in the present embodiment.
Overflow forms " siphon " when moisturizing in order to prevent, and the depth that overflow pipe 3 is inserted into adjutage 4 is 90mm.
Embodiment 4
A kind of Generator Stator Cooling system with overpressure protection function of the present embodiment, substantially with embodiment 2, no
It is with place：The distance of the 650mm high water level of the distance from top stator cooling water case 1 of overflow pipe 3 is 4.2m in the present embodiment.
Overflow forms " siphon " when moisturizing in order to prevent, and the depth that overflow pipe 3 is inserted into adjutage 4 is 110mm.
A kind of Generator Stator Cooling system with overpressure protection function described in embodiment 1-4, structure design is simple,
Maintenance workload is few, and cost of implementation is low, belongs to the higher Generator Stator Cooling water tank overpressure protection scheme of cost performance.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (8)
1. a kind of Generator Stator Cooling system with overpressure protection function, it is characterised in that：Including the stator being sequentially connected
The output channel of cooling water tank, centrifugal pump, cooler and filter, filter connects generator, the centrifugal pump, cooler
Two are both provided with filter, a job, another spare；And it is provided with water level control on the stator cooling water case
Unit and automatic overflow unit, wherein：
The water level control unit includes water level transmitter, multichannel AI modules, controller, DO modules and water supply solenoid valve,
Water level transmitter is set on stator cooling water case, and water level transmitter is electrically connected with the controller through multichannel AI modules, described
Controller is electrically connected through DO modules with water supply solenoid valve, and water supply solenoid valve is set in the moisturizing pipeline of stator cooling water case, control
The opening and closing of device control water supply solenoid valve processed；
The automatic overflow unit includes an overflow pipe, which is installed on stator cooling water case.
2. a kind of Generator Stator Cooling system with overpressure protection function according to claim 1, it is characterised in that：
The water level control unit further includes isolator, and isolator is provided with multiple, and water level transmitter signal circuit is into multichannel
AI modules end installs isolator additional, other analog input signal circuits also install isolator additional into multichannel AI modules end.
3. a kind of Generator Stator Cooling system with overpressure protection function according to claim 2, it is characterised in that：
The controller uses DCS switch boards.
4. according to a kind of Generator Stator Cooling system with overpressure protection function of claim 1-3 any one of them,
It is characterized in that：The overflow pipe selects the stainless steel tube of a diameter of 89mm, the distance from top stator cooling water case of the overflow pipe
The distance of 650mm high water level be L1, the value of L1 is 3.8-4.2m.
5. a kind of Generator Stator Cooling system with overpressure protection function according to claim 4, it is characterised in that：
The overflow pipe other end is inserted into the open adjutage in top, and the depth that overflow pipe is inserted into adjutage is L2, the value of L2
For 90-110mm.
6. a kind of Generator Stator Cooling system with overpressure protection function according to claim 5, it is characterised in that：
Stator cooling water case water outlet is being provided with isolating valve on the overflow pipe, efferent duct is connected below adjutage, it is defeated
Setting row trench below outlet pipe.
7. according to a kind of Generator Stator Cooling system with overpressure protection function of claim 1-3 any one of them,
It is characterized in that：The stator cooling water case forms a circulation circuit with ion-exchanger.
8. a kind of Generator Stator Cooling system with overpressure protection function according to claim 7, it is characterised in that：
Three sets of conductivity meters and sensor are set on the outlet pipe of the stator cooling water case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820267213.4U CN207833319U (en) | 2018-02-24 | 2018-02-24 | A kind of Generator Stator Cooling system with overpressure protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820267213.4U CN207833319U (en) | 2018-02-24 | 2018-02-24 | A kind of Generator Stator Cooling system with overpressure protection function |
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| Publication Number | Publication Date |
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| CN207833319U true CN207833319U (en) | 2018-09-07 |
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ID=63398489
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| CN201820267213.4U Expired - Fee Related CN207833319U (en) | 2018-02-24 | 2018-02-24 | A kind of Generator Stator Cooling system with overpressure protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347262A (en) * | 2018-09-29 | 2019-02-15 | 东方电机控制设备有限公司 | A kind of anti-siphon method of Generator Stator Cooling water system |
-
2018
- 2018-02-24 CN CN201820267213.4U patent/CN207833319U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347262A (en) * | 2018-09-29 | 2019-02-15 | 东方电机控制设备有限公司 | A kind of anti-siphon method of Generator Stator Cooling water system |
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Granted publication date: 20180907 Termination date: 20190224 |