CN205042827U - Anti - washing unit of turbo generator stator cooling water - Google Patents
Anti - washing unit of turbo generator stator cooling water Download PDFInfo
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- CN205042827U CN205042827U CN201520594490.2U CN201520594490U CN205042827U CN 205042827 U CN205042827 U CN 205042827U CN 201520594490 U CN201520594490 U CN 201520594490U CN 205042827 U CN205042827 U CN 205042827U
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- pipeline
- backwash
- butterfly valve
- stator
- cooling water
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Abstract
The utility model discloses an anti - washing unit of turbo generator stator cooling water comprises one set of pipeline, six butterfly valves, back flush filter, two ball valves and back flush restricting orifice, the pipeline is annular route, and pipeline top is equipped with two pipelines along separate routes, after one the pipeline is connected behind the first butterfly valve decurrent order in proper order and is connected second, two butterfly valves of third along separate routes, more in proper order with back flush filter and fourth butterfly valve UNICOM, still install first ball valve between second, two butterfly valves of third, be equipped with the back flush restricting orifice on another shut pipeline, board one side and the 5th butterfly valve UNICOM, opposite side and the 6th butterfly valve UNICOM, the second ball valve is connected at the board upper reaches, the back flush return circuit is out of work under guaranteeing unit normal operating state, and the unit starts the back flush return circuit in the maintenance period of stopping transport, and the anti - washing unit's of stator equipment is simple, and it is little to make the degree -of -difficulty factor, low cost, and convenience of customers actual operation and maintenance can guarantee that the system is long -term, the steady operation.
Description
Technical field
The utility model relates generally to the large turbo-type generator technical field of plant equipment, particularly relates to a kind of stator of steam turbine generator cooling water back purge system.
Background technology
In the industrial production, traditional Large steam generating set is reach good cooling effect, adopts hollow stator line rod, as cooling-water duct, for high efficiency cooling stator bar.Generator is equipped with auxiliary Stator Condense Water System and meets stator cooling water water supply and system monitoring.The shortcoming of this type of cooling is: due to stator bar structure space restriction, hollow line rod cooling-water duct narrow and small, in generator operation, the long-term unidirectional operation of cooling water, unavoidably wherein impurity by hollow line rod and adhere to online excellent internal cooling aquaporin.Impurity deposits for a long time and discharge will be caused to reduce or blocking to cooling-water duct, thus causes line rod overheated, and unit is cut off the water supply chaser.During regular maintenance down, because this passage is narrow and small, clear up extremely difficult, so consider regularly to carry out backwash to stator bar, carry out rinsing the impurity removed in the online rod of attachment to line rod with reverse flow.Thus, the requirement of when Stator Condense Water System arranges back purge system to meet generator outage maintenance, stator backwash being cleared up.
In current prior art, all there is different backwash designs in each generator manufacturer for the Stator Condense Water System of oneself, usually just on generator inlet and outlet pipe, installs backwash stop valve and backwash filter.This simplicity of design is easy to operate, but backwashing equipment is without fixture, and maintenance needs emptying related system pipeline; System does not have particular design requirement for positive reverse direction flow, causes current direction in the backwash of generator normal operation period if there is maloperation, will cause cut off the water supply and cause massive losses unit; And control is lacked for the discharge of system during backwash, produce waste.
Utility model content
For above-mentioned defect of the prior art and problem; the object of the embodiment of the present invention is to provide a kind of stator of steam turbine generator cooling water back purge system of better reliability; solve prior art Problems existing; consider the input of generator elevated tank at backwash process; operation and the inspection of backwash during facilitating generator outage control; reach cleaned at regular intervals stator bar inner passage, avoid the situation of impurity blocking water channel to occur, thus increase economic efficiency.
In order to solve the problems of the technologies described above, the solution that the utility model proposes is:
Stator of steam turbine generator cooling water back purge system, is characterized in that, is made up of a circuits, six butterfly valves, backwash filter, two ball valves and backwash restricting orifices; Pipeline is annular channels, pipeline top is provided with connecting bend, connecting bend downstream is provided with two shunt tubes, the first outlet is gone to after a shunt tubes connects the first butterfly valve by elbow of pipeline, first outlet upstream by elbow downward be provided with the first branch line, first branch line is linked in sequence after second, third two butterfly valves successively, export to second successively with after backwash filter and the 4th butterfly valve UNICOM again, the second branch line is also had between second, third two butterfly valve, it is provided with the first ball valve, then leads to first interface upwards; Another shunt tubes is provided with backwash restricting orifice, leads to the 3rd interface on backwash restricting orifice side with after the 5th butterfly valve UNICOM, after opposite side and the 6th butterfly valve UNICOM, lead to the second outlet; Be provided with the 3rd branch road in backwash restricting orifice upstream, lead to the second interface by the second ball valve.
Preferred as technique scheme, described pipeline is three annular channels, and is round rectangle shape loop, and namely each connecting bend is 90 ° of band arc, and arc length is 1/4th positive round.
Preferred as technique scheme, three annulus lines of described annular channels are each one around, is provided with vertical 3rd annulus line, the 3rd annulus line is supported by support in the middle of left and right annulus line.
Preferred as technique scheme, described backwash filter is dismountable being arranged on pipeline.
Compared with prior art, the advantage of the stator of steam turbine generator cooling water back purge system that the utility model provides just is: under ensureing normal operating condition of unit, backwash loop does not work, unit starts backwash loop in the stoppage in transit maintenance period, the equipment of stator back purge system is simple, manufacture difficulty coefficient is little, with low cost, facilitate user's practical operation and maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment 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 embodiments more of the present utility model, 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 Facad structure schematic diagram of the stator of steam turbine generator cooling water back purge system of the utility model embodiment.
Fig. 2 is the left surface structural representation of the stator of steam turbine generator cooling water back purge system of the utility model embodiment.
Fig. 3 is the right flank structural representation of the stator of steam turbine generator cooling water back purge system of the utility model embodiment.
Fig. 4 is the plan structure schematic diagram of the stator of steam turbine generator cooling water back purge system of the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, be clearly and completely described the technical solution of the utility model, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to scope of the present utility model.
As Figure 1-4, stator of steam turbine generator cooling water back purge system, by a circuits, six butterfly valves 21,22,23,24,25,26, backwash filter 3, two ball valves 41,42 and backwash restricting orifice 5 form, pipeline is three annular channels, each one of left and right, left, vertical 3rd annulus line is provided with in the middle of right annulus line, 3rd annulus line is supported by support 1, pipeline top is provided with connecting bend, connecting bend downstream is provided with two shunt tubes, the first outlet a is gone to after a shunt tubes connects the first butterfly valve 21 by elbow of pipeline, first outlet a upstream by elbow downward be provided with the first branch line, first branch line is linked in sequence second successively, 3 two butterfly valve 22, after 23, export f to second successively with after backwash filter 3 and the 4th butterfly valve 24 UNICOM again, second, 3rd liang of butterfly valve 22, the second branch line is also had between 23, it is provided with the first ball valve 41, lead to first interface b upwards again, another shunt tubes is provided with backwash restricting orifice 5, leads to the 3rd interface d on backwash restricting orifice 5 side with after the 5th butterfly valve 25 UNICOM, after opposite side and the 6th butterfly valve 26 UNICOM, lead to the second outlet f, be provided with the 3rd branch road in backwash restricting orifice 5 upstream, lead to the second interface c by the second ball valve 42.
The pipeline of annular channels is that namely each bending place is 90 ° of band arc, and arc length is 1/4th positive round.
During work, in backwash process, stator cooling water rinses through the reverse importing coil of backwash restricting orifice 5, finally by backwash filter 3 impurity screening, flows back to water collection dress; Flushing process is participated according to other loop by the loop of water tank.
Backwash process operates: close 25,26 butterfly valves, open two ball valves 41,42 and pin enable possition.Open 21,22,23,24 butterfly valves.Start stator water system main pump and implement stator backwash; After stopping backwash, close 21,22,23,24,41,42 valves; Open the emptying backwash filter of drain valve of backwash filter 3; Disassembly, cleaning backwash filter 3; Reinstall backwash filter 3; If impurity performs stator backwash again according to aforesaid operations at most in backwash filter 3.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (4)
1. a stator of steam turbine generator cooling water back purge system, is characterized in that, is made up of a circuits, six butterfly valves, backwash filter, two ball valves and backwash restricting orifices; Pipeline is annular channels, pipeline top is provided with connecting bend, connecting bend downstream is provided with two shunt tubes, the first outlet is gone to after a shunt tubes connects the first butterfly valve by elbow of pipeline, first outlet upstream by elbow downward be provided with the first branch line, first branch line is linked in sequence after second, third two butterfly valves successively, export to second successively with after backwash filter and the 4th butterfly valve UNICOM again, the second branch line is also had between second, third two butterfly valve, it is provided with the first ball valve, then leads to first interface upwards; Another shunt tubes is provided with backwash restricting orifice, leads to the 3rd interface on backwash restricting orifice side with after the 5th butterfly valve UNICOM, after opposite side and the 6th butterfly valve UNICOM, lead to the second outlet; Be provided with the 3rd branch road in backwash restricting orifice upstream, lead to the second interface by the second ball valve.
2. a kind of stator of steam turbine generator cooling water back purge system according to claim 1, it is characterized in that, described pipeline is three annular channels, and is round rectangle shape loop, namely each connecting bend is 90 ° of band arc, and arc length is 1/4th positive round.
3. a kind of stator of steam turbine generator cooling water back purge system according to claim 2, it is characterized in that, three annulus lines of described annular channels are each one around, be provided with vertical 3rd annulus line, the 3rd annulus line is supported by support in the middle of left and right annulus line.
4. a kind of stator of steam turbine generator cooling water back purge system according to claim 1, it is characterized in that, described backwash filter is dismountable being arranged on pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594490.2U CN205042827U (en) | 2015-08-07 | 2015-08-07 | Anti - washing unit of turbo generator stator cooling water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594490.2U CN205042827U (en) | 2015-08-07 | 2015-08-07 | Anti - washing unit of turbo generator stator cooling water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205042827U true CN205042827U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520594490.2U Active CN205042827U (en) | 2015-08-07 | 2015-08-07 | Anti - washing unit of turbo generator stator cooling water |
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| CN (1) | CN205042827U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225874A (en) * | 2016-08-29 | 2016-12-14 | 中盐工程技术研究院有限公司 | A kind of liquid level detection device of salt manufacturing evaporator |
| CN107583917A (en) * | 2017-09-13 | 2018-01-16 | 岭澳核电有限公司 | Electricity generator stator coil clog removes integration scenario |
| CN114542356A (en) * | 2022-02-10 | 2022-05-27 | 中国长江电力股份有限公司 | Water supply throttling system based on temperature control and control method |
-
2015
- 2015-08-07 CN CN201520594490.2U patent/CN205042827U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225874A (en) * | 2016-08-29 | 2016-12-14 | 中盐工程技术研究院有限公司 | A kind of liquid level detection device of salt manufacturing evaporator |
| CN107583917A (en) * | 2017-09-13 | 2018-01-16 | 岭澳核电有限公司 | Electricity generator stator coil clog removes integration scenario |
| CN114542356A (en) * | 2022-02-10 | 2022-05-27 | 中国长江电力股份有限公司 | Water supply throttling system based on temperature control and control method |
| CN114542356B (en) * | 2022-02-10 | 2023-06-13 | 中国长江电力股份有限公司 | Water supply throttling system based on temperature control and control method |
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