CN204760964U - Heavy current is from looks enclosed bus forced cooling device - Google Patents
Heavy current is from looks enclosed bus forced cooling device Download PDFInfo
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- CN204760964U CN204760964U CN201520298357.2U CN201520298357U CN204760964U CN 204760964 U CN204760964 U CN 204760964U CN 201520298357 U CN201520298357 U CN 201520298357U CN 204760964 U CN204760964 U CN 204760964U
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- bus
- heat exchanger
- monitoring
- generating line
- fan group
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Abstract
The utility model discloses a heavy current is from looks enclosed bus forced cooling device, generating line include first generating line L1, second generating line L2 and third generating line L3, and first generating line L1, second generating line L2 and third generating line L3's head end passes through the pipeline intercommunication, and first generating line L1, second generating line L2 and third generating line L3's end passes through the pipeline intercommunication, first generating line L1 middle part is equipped with one, third generating line L3 of cooling gas entry middle part and is equipped with two, second generating line L2 of cooling gas entry middle part and is equipped with the generating line gas outlet, cooling gas entry no. 1 and the first exit end intercommunication that distributes the choke valve, cooling gas entry no. 2 communicates with the exit end of second distribution choke valve, the entry end of first distribution choke valve links blower set no. 1, and the entry end of second distribution choke valve links blower set no. 2, gas outlet intercommunication heat exchanger, fan group no. 1, fan group no. 2, heat exchanger set up in a closed shell closed shell intercommunication pressure replenishment system, be equipped with temperature sensor no. 1 on the pipeline between gas outlet and the heat exchanger, the heat exchanger exit sets up temperature sensor no. 2 and humidity transducer, closed shell department is provided with the differential pressure sensor no. 1 who is used for monitoring closed shell internal -external differential pressure.
Description
Technical field
The present invention relates to bus cooling field, particularly a kind of big current isolated-phase enclosed bus forcing functions device.
Background technology
In recent years along with the growth of national economy, country's research and development Generation Ⅲ, and have independent intellectual property right, developed large quantities of Large Copacity nuclear power generating sets simultaneously.Enclosed busbar connects the conduct electrical energy equipment of generator to step-up transformer, this equipment runs into a main problem when being applied to Large Copacity nuclear power generating sets: along with the increase of unit capacity and electric current, need the volume of isolated-phase enclosed bus also will increase accordingly, but due to nuclear power plant's main power house limited space, particularly near generating outlet, enough spaces can not be had to place self cooling bus.Dependence on import.
Current Large Copacity nuclear power generating sets enclosed busbar is by forced air cooling apparatus cools, and the ampacity of bus-bars conductor can increase 0.5-1 doubly.Bus comprises conductor and shell, and external diameter etc. greatly reduce, thus has saved a large amount of metal and convenient construction installation.Forced air cooling device generally uses in heavy current busbar abroad, as: Canada thinks that rated current is that more than 8000A can consider forced air cooling, the self cooling mode of Japan is generally no more than 16000A, and length is no more than 20-25m, and the U.S. considers that from 600MVA unit bus adopts forced air cooling.China is by economic technology conditionality, and the existing unit run only has Daya Gulf and Ling'ao nuclear power plant to be equipped with forced air cooling system, and all from external import.
Due to existing forced air cooling equipment dependence on import, cost is higher, and due to international vendor can not provide cover drawing data, produced problem in operation maintenance process, manufacturer can only be relied on solve, cause maintenance cost high like this, and encounter problems and cannot solve in time.
Summary of the invention
In order to make up above deficiency, the invention provides the big current isolated-phase enclosed bus forcing functions device that a kind of cost is low, stability is high, easy to operate.
Technical scheme of the present invention is:
A kind of big current isolated-phase enclosed bus forcing functions device, comprise the bus be made up of conductor and shell, described conductor is arranged in shell; Described bus comprises the first bus L1, the second bus L2 and triple bus-bar L3, and the head end of the first bus L1, the second bus L2 and triple bus-bar L3 is by pipeline communication, and the end of the first bus L1, the second bus L2 and triple bus-bar L3 passes through pipeline communication; Be provided with cooling gas inlet one in the middle part of first bus L1, in the middle part of triple bus-bar L3, be provided with cooling gas inlet two, in the middle part of the second bus L2, be provided with bus gas vent; Described cooling gas inlet one is communicated with first port of export distributing choke valve, and described cooling gas inlet two is communicated with second port of export distributing choke valve; Described first arrival end distributing choke valve is communicated with blower fan group one, and the described second arrival end distributing choke valve is communicated with blower fan group two; Described bus gas vent is communicated with heat exchanger; Described blower fan group one, blower fan group two, heat exchanger are arranged in a closure casing, and described closure casing is communicated with pressure replenishment system; Pipeline between described bus gas vent and heat exchanger is provided with the temperature sensor one for monitoring bus internal heat generation situation; Described heat exchanger exit place is provided with for monitoring the temperature sensor two of gas temperature and the humidity sensor for monitoring circulating air humidity after heat exchanger cooling; Described closure casing place is provided with the differential pressure pickup one for monitoring described closure casing inside and outside differential pressure.
Preferably, described blower fan group one is provided with the differential pressure pickup two for monitoring blower fan group one entrance point and outlet port differential pressure; Described blower fan group two is provided with the differential pressure pickup three for monitoring blower fan group two entrance point and outlet port differential pressure; Described heat exchanger is provided with the differential pressure pickup four for monitoring its inlet end and outlet side pressure reduction.
As preferably, described heat exchanger is water cooling heat exchanger.
Further, described heat exchanger water inlet is provided with the temperature sensor three for monitoring closed cycle water inflow temperature; Described heat exchanger water outlet is provided with the temperature sensor four for monitoring closed cycle water leaving water temperature; The water inlet pipe of described heat exchanger is provided with the pressure sensor for monitoring heat exchanger intake pressure; The outlet pipe of described heat exchanger is provided with the flow sensor for discharge in monitoring heat exchanger.
As preferably, described closure casing minimum point is provided with the liquid level sensor for monitoring water leakage situation.
Preferably, each transducer is all connected with controller.
Further, described controller is PLC; PLC is connected by multimode fiber with each transducer.
As preferably, two described heat exchangers are at least set.
Isolated-phase enclosed bus produces heat after passing into big current, and for making to prevent the too high refrigerating gas being blasted certain pressure by L1, L3 phase bus of bus temperature, this gas enters L2 phase in the end mixed flow of bus, is then back to cooler through row cooling by L2 phase.The refrigerating gas of cooler is closed cycle water, and cooler can be one group, also can be two or more sets.
For preventing moisture, dust particale etc. enter bus-bar system, and also for refrigerating gas in bus keeps stable operation, air cooling equipment generally introduces air compensating system.For improving the reliability of system cloud gray model, cooling blower and heat exchanger all adopt the using and the reserved design.
Beneficial effect of the present invention is:
1, cooling device of the present invention is to bus good cooling results, under the state of busbar cross-section and constancy of volume, improves the ampacity of phaseisolated bus.
2, in bus space charge to Electric Field Distribution and insulation property gas at enclosed busbar internal circulation flow, rub with bus, shell, supporting insulator etc. and produce ion, also have the reason such as heat emission, partial discharge to produce ion in addition; Simultaneously because enclosed busbar conductor is made up of multistage bus, joint welding may be processed bad, and the mechanical oscillation of enclosed busbar transport and run duration all may make to there is metallic in enclosed busbar.Gas ion and metallic can form space charge along with air current flow in enclosed busbar, when charge density reaches certain value, can cause puncturing or flashover of bus, thus cause serious harm, can eliminate the harm of the party in the face of bus by this device.
3, the power supply safety problem of cooling system is solved.
4, air cooling system configures multiple transducer, can the running status of Real-Time Monitoring bus, and running status is transferred to controller, strengthens bus reliability of operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of big current isolated-phase enclosed bus forcing functions device of the present invention;
Fig. 2 is the structural representation of sensor location in big current isolated-phase enclosed bus forcing functions device of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of big current isolated-phase enclosed bus forcing functions device, comprise the bus 1 be made up of conductor and shell, conductor is arranged in shell.Bus 1 comprises the first bus L1, the second bus L2 and triple bus-bar L3, and the head end of the first bus L1, the second bus L2 and triple bus-bar L3 is by pipeline communication, and the end of the first bus L1, the second bus L2 and triple bus-bar L3 passes through pipeline communication; First bus L1 middle is provided with cooling gas inlet one, and triple bus-bar L3 middle is provided with cooling gas inlet two, is provided with bus gas vent in the middle part of the second bus L2.
Cooling gas inlet one is communicated with first port of export distributing choke valve 2, and cooling gas inlet two is communicated with second port of export distributing choke valve 3.First arrival end distributing choke valve 2 is communicated with the arrival end connection blower fan group 29 that blower fan group one 8, second distributes choke valve 3; Bus gas vent is communicated with heat exchanger 4, and heat exchanger 4 comprises the two groups of water cooling heat exchangers be connected in series, and cooling water system 7 is as the low-temperature receiver of heat exchanger 4; Blower fan group 1, blower fan group 29, heat exchanger 4 are arranged in a closure casing 5, and closure casing 5 is communicated with pressure replenishment system 6.Can resume work rapidly under ensureing device damage situation, standby fan group, heat exchanger for subsequent use and distribution choke valve for subsequent use (in Fig. 1, B2 represents distribution choke valve for subsequent use, and B8 represents blower fan group for subsequent use) can be set in closure casing 5.
For ease of monitoring the running status of forced air cooling, corresponding transducer is set at each key position of equipment, sensing station as shown in Figure 2:
Pipeline between bus gas vent 10 and heat exchanger 4 is provided with temperature sensor one TT01 for monitoring bus internal heat generation situation; Heat exchanger 4 exit is arranged for monitoring temperature sensor two TT02 of gas temperature and the humidity sensor RH01 for monitoring circulating air humidity after heat exchanger cooling.
Closure casing 5 place is provided with differential pressure pickup one DPT01 for monitoring closure casing 5 inside and outside differential pressure.Blower fan group 1 place is provided with differential pressure pickup two DPT02 for monitoring blower fan group 1 entrance point and outlet port differential pressure; Blower fan group 29 place is provided with differential pressure pickup three DPT03 for monitoring blower fan group 29 entrance point and outlet port differential pressure; Heat exchanger 4 is provided with differential pressure pickup four DPT04 for monitoring its inlet end and outlet side pressure reduction.
Heat exchanger water inlet 11 place is provided with temperature sensor three TT03 for monitoring closed cycle water inflow temperature; Heat exchanger delivery port 12 place is provided with temperature sensor four TT04 for monitoring closed cycle water leaving water temperature; The water inlet pipe of heat exchanger 4 is provided with the pressure sensor PSH01 for monitoring heat exchanger intake pressure; The outlet pipe of heat exchanger 4 is provided with the flow sensor FS01 for discharge in monitoring heat exchanger.
Closure casing 5 minimum point is provided with the liquid level sensor LZH01 for monitoring water leakage situation.
Each transducer is connected with PLC by multimode fiber.
Temperature sensor one TT01, is connected with PLC; It is 0-100 DEG C that PLC arranges this transducer measured temperature scope; When temperature is higher than set point alarm, check whether bus has heat generating spot.
Temperature sensor two TT02, is connected with PLC; It is 0-100 DEG C that PLC arranges this transducer measured temperature scope; When temperature is higher than set point alarm, check the state of TT03 temperature and FS01.
Temperature sensor three TT03, is connected with PLC; It is 0-100 DEG C that PLC arranges this transducer measured temperature scope; When temperature is higher than set point alarm, check the state of closed cycle water, and consider to reduce unit capacity, and keep a close eye on bus each several part temperature conditions.
Temperature sensor four TT04, is connected with PLC; It is 0-100 DEG C that PLC arranges this transducer measured temperature scope; When temperature is higher than set point alarm, check whether heat exchanger normally works.
Differential pressure pickup one DPT01, is connected with PLC; It is 0-500Pa that PLC arranges pressure differential range that this transducer is surveyed; When pressure reduction is lower than set point alarm, EV01 is opened (opening by pressure reduction replenishment system), equipment is inflated.
Differential pressure pickup two DPT02, is connected with PLC; It is 0-500Pa that PLC arranges pressure differential range that this transducer is surveyed; When pressure reduction is lower than set point alarm, run blower fan and automatically close, relevant air-valve switch cuts out, and standby fan puts into operation.
Differential pressure pickup three DPT03, is connected with PLC; It is 0-500Pa that PLC arranges pressure differential range that this transducer is surveyed; When pressure reduction is lower than set point alarm, run blower fan and automatically close, relevant air-valve switch cuts out, and standby fan puts into operation.
The dead DPT04 of differential pressure pickup, is connected with PLC; It is 0-500Pa that PLC arranges pressure differential range that this transducer is surveyed; When pressure reduction is higher than set point alarm, shut down cleaning heat exchanger dust or by the object that may affect ventilation.
Humidity sensor RH01, is connected with PLC; It is 0-100% that PLC arranges this transducer institute measuring moisture scope; When humidity is higher than set point alarm, check whether heat exchanger leaks, and start air dry-set.
Liquid level sensor LZH01, is connected with PLC; When having liquid, the closing of contact, reports to the police; Check whether leakage.
Pressure sensor PSH01, is connected with PLC; It is 0-100% that PLC arranges this transducer institute measuring pressure scope; When pressure is higher than set point alarm, close valve with electrically motorized operation, and circulation is checked.
Refrigerating gas brings the first distribution choke valve 2 into by blower fan group 1, then distributes choke valve outlet through first and 13 enters bus L1, and by the middle part of bus L1 to two lateral movements, then enter heat exchanger by the bus gas vent on bus L2 and cool, circulate according to this.
Refrigerating gas brings the second distribution choke valve 3 into by blower fan group 29, then distributes choke valve outlet through second and 14 enters bus L3, and by the middle part of bus L3 to two lateral movements, then enter heat exchanger by the bus gas vent on bus L2 and cool, circulate according to this.
Can resume work rapidly under ensureing device damage situation, standby fan group, heat exchanger for subsequent use and distribution choke valve for subsequent use can be set in closure casing 5.Stand-by equipment is connecting system also.
Claims (7)
1. a big current isolated-phase enclosed bus forcing functions device, comprises the bus be made up of conductor and shell, and described conductor is arranged in shell; Described bus comprises the first bus L1, the second bus L2 and triple bus-bar L3, and the head end of the first bus L1, the second bus L2 and triple bus-bar L3 is by pipeline communication, and the end of the first bus L1, the second bus L2 and triple bus-bar L3 passes through pipeline communication; It is characterized in that: be provided with cooling gas inlet one in the middle part of the first bus L1, in the middle part of triple bus-bar L3, be provided with cooling gas inlet two, in the middle part of the second bus L2, be provided with bus gas vent; Described cooling gas inlet one is communicated with first port of export distributing choke valve, and described cooling gas inlet two is communicated with second port of export distributing choke valve; Described first arrival end distributing choke valve is communicated with blower fan group one, and the described second arrival end distributing choke valve is communicated with blower fan group two; Described bus gas vent is communicated with heat exchanger; Described blower fan group one, blower fan group two, heat exchanger are arranged in a closure casing, and described closure casing is communicated with pressure replenishment system; Pipeline between described bus gas vent and heat exchanger is provided with the temperature sensor one for monitoring bus internal heat generation situation; Described heat exchanger exit place is provided with for monitoring the temperature sensor two of gas temperature and the humidity sensor for monitoring circulating air humidity after heat exchanger cooling; Described closure casing place is provided with the differential pressure pickup one for monitoring described closure casing inside and outside differential pressure.
2. big current isolated-phase enclosed bus forcing functions device as claimed in claim 1, is characterized in that: described blower fan group one is provided with the differential pressure pickup two for monitoring blower fan group one entrance point and outlet port differential pressure; Described blower fan group two is provided with the differential pressure pickup three for monitoring blower fan group two entrance point and outlet port differential pressure; Described heat exchanger is provided with the differential pressure pickup four for monitoring its inlet end and outlet side pressure reduction.
3. big current isolated-phase enclosed bus forcing functions device as claimed in claim 1, is characterized in that: described heat exchanger is water cooling heat exchanger.
4. big current isolated-phase enclosed bus forcing functions device as claimed in claim 3, is characterized in that: described heat exchanger water inlet is provided with the temperature sensor three for monitoring closed cycle water inflow temperature; Described heat exchanger water outlet is provided with the temperature sensor four for monitoring closed cycle water leaving water temperature; The water inlet pipe of described heat exchanger is provided with the pressure sensor for monitoring heat exchanger intake pressure; The outlet pipe of described heat exchanger is provided with the flow sensor for discharge in monitoring heat exchanger.
5. the big current isolated-phase enclosed bus forcing functions device as described in any one of claim 1-4, is characterized in that: each transducer is all connected with controller.
6. big current isolated-phase enclosed bus forcing functions device as claimed in claim 5, is characterized in that: described controller is PLC; PLC is connected by multimode fiber with each transducer.
7. big current isolated-phase enclosed bus forcing functions device as claimed in claim 1, is characterized in that: at least arrange two described heat exchangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520298357.2U CN204760964U (en) | 2015-05-11 | 2015-05-11 | Heavy current is from looks enclosed bus forced cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520298357.2U CN204760964U (en) | 2015-05-11 | 2015-05-11 | Heavy current is from looks enclosed bus forced cooling device |
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| Publication Number | Publication Date |
|---|---|
| CN204760964U true CN204760964U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520298357.2U Expired - Fee Related CN204760964U (en) | 2015-05-11 | 2015-05-11 | Heavy current is from looks enclosed bus forced cooling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525284A (en) * | 2016-12-30 | 2017-03-22 | 天津市天开高压设备制造有限公司 | Novel bus temperature detection device |
-
2015
- 2015-05-11 CN CN201520298357.2U patent/CN204760964U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525284A (en) * | 2016-12-30 | 2017-03-22 | 天津市天开高压设备制造有限公司 | Novel bus temperature detection device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20170511 |