CN215633487U - Water supply anti-freezing purging system for hydroelectric generating set technology - Google Patents
Water supply anti-freezing purging system for hydroelectric generating set technology Download PDFInfo
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- CN215633487U CN215633487U CN202122004700.6U CN202122004700U CN215633487U CN 215633487 U CN215633487 U CN 215633487U CN 202122004700 U CN202122004700 U CN 202122004700U CN 215633487 U CN215633487 U CN 215633487U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a water-turbine generator set technical water supply anti-freezing purging system, which is characterized in that a new air path, a circulating cooler, a circulating water supply tank, a first water supply pump, a second water supply pump and all parts are arranged, after a unit shutdown technical water supply system is shut down, an upper computer program sends a command to open a second air supply valve, low-pressure air discharges residual water in the circulating cooler, a unit air cooler and water inlet and outlet pipes of all parts of bearings into the circulating water supply tank through the first air supply valve with a proper opening degree, when a third flow indicator has no water flow signal, the circulating cooler and accumulated water in the pipelines can be confirmed to be completely discharged, and then the upper computer program sends a command to close the second air supply valve, so that the anti-freezing effect of the technical water supply system is achieved, and the subsequent normal startup of a unit is not influenced.
Description
Technical Field
The utility model relates to the technical field of a cooling water system of a water turbine generator set, in particular to a water supply anti-freezing purging system of the water turbine generator set technology.
Background
In a hydraulic power plant, technical water supply is also called production water supply, and mainly has the main functions of cooling running equipment, lubricating (such as a rubber bush guide bearing of a water turbine) and performing hydraulic operation (such as a main valve of a high-head power plant). Under the normal operating mode, every hydroelectric set must be equipped with technical water supply system and just can ensure the safe operation of unit, and to the hydroelectric set who is equipped with circulation water supply pond, the cooling water in the technical water supply system mainly carries out heat exchange through placing between the recirculated cooler of tail water lock chamber and the tail water that flows (the temperature is lower than the cooling water), keeps the temperature of water in the circulation water supply pond in reasonable scope. When the external environment temperature is lower than 0 ℃, if the technical water supply system of the unit is in an off state, the cooling water in the circulating cooler is possibly partially frozen, and the normal start-up of the unit is influenced. And the risk can be greatly reduced by equipping a hydro-generator technical water supply system with a set of anti-freezing purging system.
Therefore, a water supply anti-freezing purging system for a hydroelectric generating set technology needs to be developed to solve the problems.
Disclosure of Invention
The utility model aims to solve the problems and designs a water supply anti-freezing purging system for the hydroelectric generating set technology.
The utility model realizes the purpose through the following technical scheme:
a hydroelectric set technique water supply anti-freezing purging system comprises:
a circulation cooler;
a circulating water supply tank;
a first water supply pump;
a second water supply pump; the water inlets of the first water supply pump and the second water supply pump are arranged in the circulating water supply pool; the water outlet of the first water supply pump is connected with the first end of the first water pipe, the water outlet of the second water supply pump is connected with the first end of the second water pipe, the first end of the third water pipe is connected with the second end of the first water pipe and the second end of the second water pipe, the second end of the third water pipe is connected with the middle part of the fourth water pipe, the circulating cooler is arranged on the third water pipe, the first end of the fourth water pipe is connected with the circulating water supply pool, the second end of the fourth water pipe is connected with the cooling water inlets of the unit air cooler and the bearings, the cooling water outlets of the unit air cooler and the bearings are connected with the first end of the fifth water pipe, and the second end of the fifth water pipe is connected with the circulating water supply pool; the first end of a first air pipe is connected with the first water pipe, the second end of the first air pipe is connected with the second water pipe, the first end of a second air pipe is connected with the middle part of the first air pipe, and the second end of the second air pipe is connected with the low-pressure air pipe.
The utility model has the beneficial effects that:
by setting a new air path and setting each part, after the unit shutdown technology water supply system is shut down, the upper computer program sends a command to open the second air supply valve, low-pressure air discharges residual water in the circulating cooler, the unit air cooler and the water inlet and outlet pipes of each bearing into the circulating water supply tank through the first air supply valve with proper opening, when a third flow indicator has no water flow signal, the third flow indicator can confirm that the accumulated water in the circulating cooler and the pipeline is completely discharged, and then the upper computer program sends a command to close the second air supply valve, so that the antifreezing effect of the technology water supply system is achieved, and the subsequent normal startup of the unit is not influenced.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
reference numbers in the figures: 1201. a first outlet valve; 1202. a second outlet valve; 1203. a three-way valve; 1204. a circulation cooler; 1205. a first check valve; 1206. a first control valve; 1207. a first galvanometer; 1208. a first water supply pump; 1209. a second water supply pump; 1210. a second galvanometer; 1211. a second control valve; 1212. a second check valve; 1213. a water-replenishing manual valve; 1214. a water replenishing automatic valve; 1215. a bypass water replenishing manual valve; 1216. a water level switching value sensor; 1217. a water level analog sensor; 1218. a circulating water supply tank; 1219. a third galvanometer; 1220. a water pressure gauge; 1221. a fourth galvanometer; 1222. a water temperature meter; 1223. the air cooler of the unit and each part of bearing; 1224. a drain valve; 1301. a first air supply valve; 1302. a second air supply valve; 1303. a third check valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
As shown in fig. 1, a hydroelectric generating set technique water supply anti-freezing purging system comprises:
a circulation cooler 1204;
a circulating water supply tank 1218;
a first water supply pump 1208;
a second water supply pump 1209; the water inlets of the first water supply pump 1208 and the second water supply pump 1209 are placed in the circulating water supply tank 1218; a water outlet of a first water supply pump 1208 is connected with a first end of a first water pipe, a water outlet of a second water supply pump 1209 is connected with a first end of a second water pipe, a first end of a third water pipe is connected with a second end of the first water pipe and a second end of the second water pipe, a second end of the third water pipe is connected with the middle part of a fourth water pipe, a circulating cooler 1204 is installed on the third water pipe, a first end of the fourth water pipe is connected with a circulating water supply tank 1218, a second end of the fourth water pipe is connected with a cooling water inlet of a unit air cooler and each bearing 1223, a cooling water outlet of the unit air cooler and each bearing 1223 is connected with a first end of a fifth water pipe, and a second end of the fifth water pipe is connected with the circulating water supply tank 1218; the first end of a first air pipe is connected with the first water pipe, the second end of the first air pipe is connected with the second water pipe, the first end of a second air pipe is connected with the middle part of the first air pipe, and the second end of the second air pipe is connected with the low-pressure air pipe.
A first air supply valve 1301, a third check valve 1303, and a second air supply valve 1302 are provided in this order in the second air pipe, and the first air supply valve 1301 is provided near the first air pipe.
A first flow indicator 1207, a first control valve 1206, a first check valve 1205 and a first outlet valve 1201 are sequentially arranged on the first water pipe, and the first flow indicator 1207 is arranged close to a first water supply pump 1208; a second flow indicator 1210, a second control valve 1211, a second check valve 1212 and a second outlet valve 1202 are sequentially disposed on the second water pipe, and the second flow indicator 1210 is disposed adjacent to the second water supply pump 1209; the connection point of the first air tube to the first water tube is near the outlet end of the first outlet valve 1201 and the connection point of the second air tube to the second water tube is near the outlet end of the second outlet valve 1202.
The second end of the third water pipe is connected to the fourth water pipe through a three-way valve 1203.
A water pressure gauge 1220, a fourth flow indicator 1221 and a water temperature gauge 1222 are sequentially disposed on a fourth pipeline between the three-way valve 1203 and the unit air cooler and each bearing 1223, and the water pressure gauge 1220 is disposed near the three-way valve 1203.
A third flow indicator 1219 is provided on the fifth conduit. When the third flow indicator 1219 has no water flow signal, it can be confirmed that the water in the circulation cooler 1204 and the pipeline is drained.
A water level switching value sensor 1216 and a water level analog value sensor 1217 are provided in the circulating water supply tank 1218, and the action ends of the water level switching value sensor 1216 and the water level analog value sensor 1217 are disposed in the circulating water supply tank 1218. The water level switching value sensor 1216 is provided with at least four detection positions including a high water level, a water replenishment stopping level, a water replenishment starting level, and a low water level.
The bottom of the circulating water supply tank 1218 is connected to a first end of a sixth pipeline, a drain valve 1224 is installed on the sixth pipeline, a second end of the sixth pipeline is connected to the sump, an overflow water level of the circulating water supply tank 1218 is connected to a first end of a seventh water pipe, and a second end of the seventh water pipe is connected to the sixth water pipe.
The circulating water supply tank 1218 is also connected to the first end of the eighth water pipe and the first end of the ninth water pipe, the automatic water replenishing valve 1214 and the manual water replenishing valve 1213 are installed on the eighth water pipe, the manual bypass water replenishing valve 1215 is installed on the ninth water pipe, the second end of the eighth water pipe is connected to the middle of the ninth water pipe, and the second end of the ninth water pipe is connected to the life fire-fighting water tank.
Under normal conditions, the unit technical water supply system alternately pumps cooling water in the circulating water supply tank 1218 through two technical water supply pumps, the cooling water is sent to the unit air cooler and each part of the bearings 1223 to absorb heat after being cooled by the circulating cooler 1204, and then the cooling water returns to the circulating water supply tank 1218 again to complete the circulating cooling process. Taking the first water supply pump 1208 as an example, when the first water supply pump 1208 is operated, the cooling water is pumped out from the circulating water supply tank 1218, and when the water pump outlet pressure reaches a set value, the first control valve 1206 is automatically opened, and the cooling water is sent to each unit (thrust, upper guide bearing, air cooler, lower guide bearing, water guide bearing, etc.) through the normally open first outlet valve 1201, the circulating cooler 1204 placed on the tail water platform, the three-way valve 1203, and the water supply pipeline, and then is returned to the circulating water supply tank 1218 through each water discharge pipeline after heat exchange.
When the unit shutdown technology water supply system is shut down, the upper computer program instructs to open the second air supply valve 1302, low-pressure air discharges residual water in inlet and outlet water pipes of the circulating cooler 1204, the unit air cooler and each part of bearings 1223 into the circulating water supply tank 1218 through the first air supply valve 1301 which keeps proper opening, when a third flow indicator 1219 installed at the tail end of a water discharge main pipe has no water flow signal, the circulating cooler 1204 and accumulated water in the pipeline can be confirmed to be completely discharged, and then the upper computer program instructs to close the second air supply valve 1302. Therefore, the anti-freezing effect of the technical water supply system is achieved, and the follow-up normal starting of the unit is not influenced.
The following are specifically mentioned:
1. the opening degree of the first air supply valve 1301 is adjusted and determined according to actual conditions on site, so that the circulating cooler 1204 and accumulated water in a pipeline can be guaranteed to be blown to the circulating water supply tank 1218, the opening degree is not too large, and the opening degree can be maintained after being adjusted properly;
2. a third check valve 1303 is arranged on a pipeline between the first air supply valve 1301 and the second air supply valve 1302, so that low-pressure air can only flow from the second air supply valve 1302 to the first air supply valve 1301, and cooling water is prevented from entering the low-pressure air pipeline when the technical water supply pump operates;
check valves are installed on the front end pipes of the first outlet valve 1201 and the second outlet valve 1202 to prevent the low-pressure gas from flowing toward the technical water supply pump.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a hydroelectric set technique water supply system of sweeping that prevents frostbite which characterized in that includes:
a circulation cooler;
a circulating water supply tank;
a first water supply pump;
a second water supply pump; the water inlets of the first water supply pump and the second water supply pump are arranged in the circulating water supply pool; the water outlet of the first water supply pump is connected with the first end of the first water pipe, the water outlet of the second water supply pump is connected with the first end of the second water pipe, the first end of the third water pipe is connected with the second end of the first water pipe and the second end of the second water pipe, the second end of the third water pipe is connected with the middle part of the fourth water pipe, the circulating cooler is arranged on the third water pipe, the first end of the fourth water pipe is connected with the circulating water supply pool, the second end of the fourth water pipe is connected with the cooling water inlets of the unit air cooler and the bearings, the cooling water outlets of the unit air cooler and the bearings are connected with the first end of the fifth water pipe, and the second end of the fifth water pipe is connected with the circulating water supply pool; the first end of a first air pipe is connected with the first water pipe, the second end of the first air pipe is connected with the second water pipe, the first end of a second air pipe is connected with the middle part of the first air pipe, and the second end of the second air pipe is connected with the low-pressure air pipe.
2. The hydroelectric generating set technical water supply anti-freezing purging system as claimed in claim 1, wherein a first air supply valve, a third check valve and a second air supply valve are sequentially arranged on the second air pipe, and the first air supply valve is arranged close to the first air pipe.
3. The hydroelectric generating set technical water supply anti-freezing purging system as claimed in claim 1, wherein a first flow indicator, a first control valve, a first check valve and a first outlet valve are sequentially arranged on the first water pipe, and the first flow indicator is arranged close to the first water supply pump; a second flow indicator, a second control valve, a second check valve and a second outlet valve are sequentially arranged on the second water pipe, and the second flow indicator is arranged close to the second water supply pump; the connecting point of the first air pipe and the first water pipe is close to the outlet end of the first outlet valve, and the connecting point of the second air pipe and the second water pipe is close to the outlet end of the second outlet valve.
4. The hydroelectric generating set technical water supply anti-freezing purging system as recited in claim 1, wherein the second end of the third water pipe is connected with the fourth water pipe through a three-way valve.
5. The hydroelectric generating set technical water supply anti-freezing purging system as recited in claim 4, wherein a water pressure gauge, a fourth flow indicator and a water temperature gauge are sequentially arranged on a fourth pipeline between the three-way valve and the unit air cooler and between the three-way valve and each bearing, and the water pressure gauge is arranged close to the three-way valve.
6. The hydroelectric generating set technical water supply anti-freezing purging system as claimed in claim 1, wherein a third flow indicator is arranged on the fifth pipeline.
7. The hydroelectric generating set technical water supply anti-freezing purging system as claimed in claim 1, wherein a water level switching value sensor and a water level analog value sensor are arranged on the circulating water supply tank, and the action ends of the water level switching value sensor and the water level analog value sensor are arranged in the circulating water supply tank.
8. The hydroelectric generating set technical water supply anti-freezing purging system as claimed in claim 1, wherein the bottom of the circulating water supply tank is connected with a first end of a sixth pipeline, a drain valve is installed on the sixth pipeline, a second end of the sixth pipeline is connected with the water collecting well, an overflow water level of the circulating water supply tank is connected with a first end of a seventh water pipe, and a second end of the seventh water pipe is connected with the sixth water pipe.
9. The hydroelectric generating set technical water supply anti-freezing purging system as claimed in claim 1, wherein the circulating water supply tank is further connected with a first end of an eighth water pipe and a first end of a ninth water pipe, an automatic water replenishing valve and a manual water replenishing valve are installed on the eighth water pipe, a bypass manual water replenishing valve is installed on the ninth water pipe, a second end of the eighth water pipe is connected with the middle of the ninth water pipe, and a second end of the ninth water pipe is connected with the fire-fighting life water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122004700.6U CN215633487U (en) | 2021-08-24 | 2021-08-24 | Water supply anti-freezing purging system for hydroelectric generating set technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122004700.6U CN215633487U (en) | 2021-08-24 | 2021-08-24 | Water supply anti-freezing purging system for hydroelectric generating set technology |
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| Publication Number | Publication Date |
|---|---|
| CN215633487U true CN215633487U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122004700.6U Active CN215633487U (en) | 2021-08-24 | 2021-08-24 | Water supply anti-freezing purging system for hydroelectric generating set technology |
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| CN (1) | CN215633487U (en) |
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2021
- 2021-08-24 CN CN202122004700.6U patent/CN215633487U/en active Active
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