CN111431347B - Rotor cooling water system and start-stop control method thereof - Google Patents
Rotor cooling water system and start-stop control method thereof Download PDFInfo
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- CN111431347B CN111431347B CN202010104944.9A CN202010104944A CN111431347B CN 111431347 B CN111431347 B CN 111431347B CN 202010104944 A CN202010104944 A CN 202010104944A CN 111431347 B CN111431347 B CN 111431347B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- General Physics & Mathematics (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a rotor cooling water system and a start-stop control method thereof. The invention can realize the function of automatically starting the rotor cooling water system in the full stop state of the rotor cooling water system; the function of automatically stopping the rotor cooling water system is realized under the running state of the rotor cooling water system; and in the process of automatically starting or stopping the control program, step fault alarming is realized simultaneously, and an operator can make manual judgment according to the alarming content.
Description
Technical Field
The invention relates to a rotor cooling water system and a start-stop control method thereof.
Background
The rotor cooling water system introduces rotor cooling water into the excitation end of the generator through an external water inlet pipeline, water is thrown to the water collecting tank of the rotor coil under the action of centrifugal force and flows back to the rotor cooling water tank through the water return pipeline, and heat generated by the work of the generator is taken away in the flowing process of the rotor cooling water, so that the long-term stable operation of the generator is ensured. At present, the input and the exit of the rotor cooling water system are both carried out by adopting a manual control mode of an operator, the equipment damage caused by changing the starting sequence is easily caused in the process of starting or stopping the manual control, and meanwhile, a large amount of manpower and material resources are consumed, so that the energy conservation and the environmental protection of the rotor cooling water system are not facilitated.
Disclosure of Invention
The invention aims to avoid adverse factors caused by artificial reasons, and provides the rotor cooling water system and the start-stop control method thereof which have reasonable structure and meet the requirements on control logic and control sequence, so that the start or stop of the rotor cooling water system becomes convenient, fast, energy-saving, environment-friendly, safe, time-saving and labor-saving.
The technical scheme adopted by the invention for solving the problems is as follows: a rotor cooling water system is characterized by comprising a rotor cooling water tank, an automatic water drainage device, an automatic water supplementing device, a liquid level measuring device, a water supplementing filter screen, a water supplementing electric door, a cooling water pump, a water cooler, a rotor cooling water inlet filter screen, a rotor cooling water conductivity measuring device, a rotor cooling water flow measuring device and a generator; an automatic water discharging device and an automatic water replenishing device are arranged in the rotor cooling water tank, the automatic water discharging device and the automatic water replenishing device are respectively arranged on a water discharging pipe and a water replenishing pipe, the water discharging pipe and the water replenishing pipe extend to the outside of the rotor cooling water tank from the inside of the rotor cooling water tank, a water replenishing filter screen and a water replenishing electric door are connected to the water replenishing pipe, and the liquid level measuring device is connected to the outside of the rotor cooling water tank; rotor cooling water tank's delivery port communicates with the water inlet of cooling water pump, cold water ware, rotor cooling water entry filter screen, rotor cooling water flow measuring device and generator in proper order, and the delivery port of generator and rotor cooling water tank's No. two water inlets intercommunication, the export of rotor cooling water entry filter screen still communicates through a water inlet of rotor cooling water conductivity measuring device and rotor cooling water tank.
Further, the cooling water pump comprises a rotor A cooling water pump and a rotor B cooling water pump, the rotor A cooling water pump and the rotor B cooling water pump are arranged in parallel, and the rotor A cooling water pump and the rotor B cooling water pump are connected with a rotor cooling water pump recirculation adjusting door in parallel; the inlet and the outlet of the rotor A cooling water pump are respectively provided with a rotor A cooling water pump inlet electric door and a rotor A cooling water pump outlet electric door, and the inlet and the outlet of the rotor B cooling water pump are respectively provided with a rotor B cooling water pump inlet electric door and a rotor B cooling water pump outlet electric door.
Further, the water cooler comprises a water cooler A and a water cooler B, and the water cooler A and the water cooler B are arranged in parallel; the inlet and the outlet of the A water cooler are respectively provided with an A water cooler inlet electric door and an A water cooler outlet electric door, the inlet and the outlet of the B water cooler are respectively provided with a B water cooler inlet electric door and a B water cooler outlet electric door, the A water cooler and the B water cooler are both connected with a cooling water return pipe and a cooling water inlet pipe, and a water cooler cooling water return adjusting door is installed on the cooling water return pipe.
Further, the rotor cooling water inlet filter screen comprises a rotor cooling water inlet filter screen A and a rotor cooling water inlet filter screen B, and the rotor cooling water inlet filter screen A and the rotor cooling water inlet filter screen B are arranged in parallel; the entry and the export of A rotor cooling water entry filter screen are provided with electrically operated gate before A rotor cooling water entry filter screen and behind the A rotor cooling water entry filter screen respectively, the entry and the export of B rotor cooling water entry filter screen are provided with electrically operated gate behind electrically operated gate before B rotor cooling water entry filter screen and the B rotor cooling water entry filter screen respectively.
The start-stop control method of the rotor cooling water system is characterized by comprising the following steps of: when the rotor cooling water system is started, an operator presses a 'rotor cooling water system starting' button, the rotor cooling water system is started according to set steps, starting condition judgment is automatically carried out, step fault alarm is realized when equipment faults occur, and the operator carries out artificial judgment according to alarm content; when the rotor cooling water system is stopped, the rotor cooling water system is started.
Compared with the prior art, the invention has the following advantages and effects:
(1) the invention can realize the function of automatically starting the rotor cooling water system in the full stop state of the rotor cooling water system; the function of automatically stopping the rotor cooling water system is realized under the running state of the rotor cooling water system; and in the process of automatically starting or stopping the control program, step fault alarming is realized simultaneously, and an operator can make manual judgment according to the alarming content.
(2) The start-stop control method can avoid adverse factors such as misoperation and equipment identification errors caused by artificial reasons, and enables the whole start-stop process to be convenient, rapid, time-saving and labor-saving.
(3) In the start-stop control process, the waste of working media can be effectively prevented, and the energy-saving and environment-friendly effects are achieved.
Drawings
FIG. 1 is a schematic structural diagram of a rotor cooling water system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a start-up process of the rotor cooling water according to the embodiment of the present invention.
Fig. 3 is a flowchart of a process of stopping the rotor cooling water according to the embodiment of the present invention.
In the figure: rotor cooling water tank 1, automatic water discharging device 2, automatic water supplementing device 3, liquid level measuring device 4, water supplementing filter screen 5, water supplementing electric door 6, rotor cooling water pump inlet electric door A7, rotor cooling water pump A8, rotor cooling water pump outlet electric door A9, rotor cooling water pump inlet electric door B10, rotor cooling water pump B11, rotor cooling water pump outlet electric door B12, rotor cooling water pump recirculation adjusting door 13, water cooler inlet electric door A14, water cooler A15, water cooler outlet electric door A16, water cooler inlet electric door B17, water cooler B18, water cooler outlet electric door B19, water cooler cooling water return adjusting door 20, rotor cooling water inlet filter screen front electric door A21, rotor cooling water inlet filter screen A22, rotor cooling water inlet filter screen rear electric door A23, rotor cooling water inlet filter screen front electric door B24, rotor cooling water inlet filter screen rear electric door A14, rotor cooling water inlet filter screen rear electric door B, A B rotor cooling water inlet filter screen 25, a B rotor cooling water inlet filter screen rear electric door 26, a rotor cooling water conductivity measuring device 27, a rotor cooling water flow measuring device 28 and a generator 29.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples
Referring to fig. 1, in this embodiment, a rotor cooling water system includes a rotor cooling water tank 1, an automatic water discharging device 2, an automatic water replenishing device 3, a liquid level measuring device 4, a water replenishing filter screen 5, a water replenishing electric door 6, a cooling water pump, a water cooler, a rotor cooling water inlet filter screen, a rotor cooling water conductivity measuring device 27, a rotor cooling water flow measuring device 28, and a generator 29; an automatic water discharging device 2 and an automatic water replenishing device 3 are arranged in the rotor cooling water tank 1, the automatic water discharging device 2 and the automatic water replenishing device 3 are respectively arranged on a water discharging pipe and a water replenishing pipe, the water discharging pipe and the water replenishing pipe extend to the outside of the rotor cooling water tank 1 from the inside of the rotor cooling water tank 1, a water replenishing filter screen 5 and a water replenishing electric door 6 are connected to the water replenishing pipe, and a liquid level measuring device 4 is connected to the outside of the rotor cooling water tank 1; the water outlet of the rotor cooling water tank 1 is sequentially communicated with a cooling water pump, a water cooler, a rotor cooling water inlet filter screen, a rotor cooling water flow measuring device 28 and a water inlet of a generator 29, the water outlet of the generator 29 is communicated with a second water inlet of the rotor cooling water tank 1, and the outlet of the rotor cooling water inlet filter screen is also communicated with a first water inlet of the rotor cooling water tank 1 through a rotor cooling water conductivity measuring device 27.
In this embodiment, the cooling water pump includes a rotor a cooling water pump 8 and a rotor B cooling water pump 11, the rotor a cooling water pump 8 and the rotor B cooling water pump 11 are arranged in parallel, and the rotor a cooling water pump 8 and the rotor B cooling water pump 11 are connected in parallel with a rotor cooling water pump recirculation adjustment door 13; the inlet and the outlet of the rotor A cooling water pump 8 are respectively provided with a rotor A cooling water pump inlet electric door 7 and a rotor A cooling water pump outlet electric door 9, and the inlet and the outlet of the rotor B cooling water pump 11 are respectively provided with a rotor B cooling water pump inlet electric door 10 and a rotor B cooling water pump outlet electric door 12.
In this embodiment, the water cooler includes a water cooler a 15 and a water cooler B18, and the water cooler a 15 and the water cooler B18 are arranged in parallel; an inlet and an outlet of the A water cooler 15 are respectively provided with an A water cooler inlet electric door 14 and an A water cooler outlet electric door 16, an inlet and an outlet of the B water cooler 18 are respectively provided with a B water cooler inlet electric door 17 and a B water cooler outlet electric door 19, the A water cooler 15 and the B water cooler 18 are both connected with a cooling water return pipeline and a cooling water inlet pipeline, and a water cooler cooling water return adjusting door 20 is installed on the cooling water return pipeline.
In this embodiment, the rotor cooling water inlet filter screens include a rotor cooling water inlet filter screen a 22 and a rotor cooling water inlet filter screen B25, and the rotor cooling water inlet filter screen a 22 and the rotor cooling water inlet filter screen B25 are arranged in parallel; the inlet and the outlet of the rotor A cooling water inlet filter screen 22 are respectively provided with a rotor A cooling water inlet filter screen front electric door 21 and a rotor A cooling water inlet filter screen rear electric door 23, and the inlet and the outlet of the rotor B cooling water inlet filter screen 25 are respectively provided with a rotor B cooling water inlet filter screen front electric door 24 and a rotor B cooling water inlet filter screen rear electric door 26.
The start-stop control method comprises the following steps:
(1) the process is started, see fig. 2.
The starting process of the rotor cooling water is carried out according to the following steps.
| Step (ii) of | |
| 1 | The auto start button is pressed. |
| 2 | The water replenishing |
| 3 | The water level of the rotor cooling |
| 4 | After the liquid level measuring device 4 displays normal state, the inlet electric door 7 of the rotor cooling water pump A, the outlet |
| 5 | Opening an inlet electric door 7 of the rotor cooling water pump A, an inlet |
| 6 | Starting the rotor A cooling water pump 8 or the rotor B cooling water pump 11, simultaneously opening the rotor A cooling water pump outlet |
| 7 | The water cooler cooling water |
| 8 | And finishing the self-starting of the rotor cooling water system. |
(2) The process is stopped, see fig. 3.
The process of stopping the rotor cooling water is performed as follows.
| Step (ii) of | |
| 1 | An automatic stop button is pressed. |
| 2 | Stopping the A rotor cooling water pump 8 or the B rotor cooling water pump 11 from running, and simultaneously closing the A rotor cooling water pump outlet |
| 3 | Closing a water supplementing |
| 4 | And the rotor cooling water system is automatically stopped. |
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (1)
1. A start-stop control method of a rotor cooling water system is characterized in that the rotor cooling water system comprises a rotor cooling water tank (1), an automatic water drainage device (2), an automatic water supplement device (3), a liquid level measuring device (4), a water supplement filter screen (5), a water supplement electric door (6), a cooling water pump, a water cooler, a rotor cooling water inlet filter screen, a rotor cooling water conductivity measuring device (27), a rotor cooling water flow measuring device (28) and a generator (29); an automatic water drainage device (2) and an automatic water replenishing device (3) are arranged in the rotor cooling water tank (1), the automatic water drainage device (2) and the automatic water replenishing device (3) are respectively arranged on a water drainage pipe and a water replenishing pipe, the water drainage pipe and the water replenishing pipe extend to the outside of the rotor cooling water tank (1) from the inside of the rotor cooling water tank (1), the water replenishing filter screen (5) and the water replenishing electric door (6) are connected to the water replenishing pipe, and the liquid level measuring device (4) is connected to the outside of the rotor cooling water tank (1); the water outlet of the rotor cooling water tank (1) is sequentially communicated with a cooling water pump, a water cooler, a rotor cooling water inlet filter screen, a rotor cooling water flow measuring device (28) and a water inlet of a generator (29), the water outlet of the generator (29) is communicated with a second water inlet of the rotor cooling water tank (1), and the outlet of the rotor cooling water inlet filter screen is also communicated with a first water inlet of the rotor cooling water tank (1) through a rotor cooling water conductivity measuring device (27);
the cooling water pump comprises an A rotor cooling water pump (8) and a B rotor cooling water pump (11), the A rotor cooling water pump (8) and the B rotor cooling water pump (11) are arranged in parallel, and the A rotor cooling water pump (8) and the B rotor cooling water pump (11) are connected with a rotor cooling water pump recirculation adjusting door (13) in parallel; an inlet and an outlet of the rotor A cooling water pump (8) are respectively provided with a rotor A cooling water pump inlet electric door (7) and a rotor A cooling water pump outlet electric door (9), and an inlet and an outlet of the rotor B cooling water pump (11) are respectively provided with a rotor B cooling water pump inlet electric door (10) and a rotor B cooling water pump outlet electric door (12);
the water cooler comprises a water cooler A (15) and a water cooler B (18), wherein the water cooler A (15) and the water cooler B (18) are arranged in parallel; an inlet and an outlet of the A water cooler (15) are respectively provided with an A water cooler inlet electric door (14) and an A water cooler outlet electric door (16), an inlet and an outlet of the B water cooler (18) are respectively provided with a B water cooler inlet electric door (17) and a B water cooler outlet electric door (19), the A water cooler (15) and the B water cooler (18) are both connected with a cooling water return pipeline and a cooling water inlet pipeline, and a water cooler cooling water return adjusting door (20) is installed on the cooling water return pipeline;
the rotor cooling water inlet filter screen comprises a rotor cooling water inlet filter screen A (22) and a rotor cooling water inlet filter screen B (25), and the rotor cooling water inlet filter screen A (22) and the rotor cooling water inlet filter screen B (25) are arranged in parallel; an inlet and an outlet of the rotor A cooling water inlet filter screen (22) are respectively provided with a rotor A cooling water inlet filter screen front electric door (21) and a rotor A cooling water inlet filter screen rear electric door (23), and an inlet and an outlet of the rotor B cooling water inlet filter screen (25) are respectively provided with a rotor B cooling water inlet filter screen front electric door (24) and a rotor B cooling water inlet filter screen rear electric door (26);
the start-stop control method of the rotor cooling water system comprises the following steps: when the rotor cooling water system is started, an operator presses a 'rotor cooling water system starting' button, the rotor cooling water system is started according to set steps, starting condition judgment is automatically carried out, step fault alarm is realized when equipment faults occur, and the operator carries out artificial judgment according to alarm content; when the rotor cooling water system is stopped and started;
the start-stop control method comprises the following steps:
(1) starting a process;
the starting process of the rotor cooling water is carried out according to the following steps;
1) pressing an automatic start button;
2) opening the water replenishing electric door (6);
3) judging the water level of the rotor cooling water tank (1);
4) after the liquid level measuring device (4) displays normal state, an inlet electric door (7) of the rotor cooling water pump A, an outlet electric door (9) of the rotor cooling water pump A, an inlet electric door (10) of the rotor cooling water pump B, an outlet electric door (12) of the rotor cooling water pump B, an inlet electric door (14) of the water cooler A, an outlet electric door (16) of the water cooler A, an inlet electric door (17) of the water cooler B, an outlet electric door (19) of the water cooler B, a return water adjusting door (20) of the cooling water of the water cooler A, an inlet filter screen front electric door (21) of the rotor cooling water of the A, an inlet filter screen rear electric door (23) of the rotor cooling water of the A, a rotor cooling water inlet filter screen front electric door (24) of the rotor B and a cooling water inlet filter screen rear electric door (26) of the rotor cooling water of the B are opened to carry out static pressure water injection on the system, the time is prolonged by 120 seconds, the valves in the step are closed, and the water injection is finished;
5) opening an inlet electric door (7) of the rotor cooling water pump A, an inlet electric door (10) of the rotor cooling water pump B, an inlet electric door (14) of the water cooler A, an outlet electric door (16) of the water cooler A, a front electric door (21) of a cooling water inlet filter screen of the rotor A, a rear electric door (23) of the cooling water inlet filter screen of the rotor A, or opening another valve in parallel connection to confirm that the liquid level measuring device (4) is normal, and the condition meets the self-starting preparation of a rear rotor cooling water system;
6) starting the rotor cooling water pump A (8) or the rotor cooling water pump B (11), and simultaneously starting the rotor cooling water pump A outlet electric door (9) or the rotor cooling water pump B outlet electric door (12), wherein the rotor cooling water system is started normally;
7) a water cooler cooling water return adjusting door (20) is automatically put in and controls the target value of the rotor cooling water supply temperature to be a set temperature through PID adjustment;
8) finishing the self-starting of the rotor cooling water system;
(2) stopping the process;
the stopping process of the rotor cooling water is carried out according to the following steps;
1) pressing an automatic stop button;
2) stopping the rotor A cooling water pump (8) or the rotor B cooling water pump (11) from running, and closing an outlet electric door (9) of the rotor A cooling water pump or an outlet electric door (12) of the rotor B cooling water pump;
3) closing a water supplementing electric door (6), an A rotor cooling water pump inlet electric door (7), an A rotor cooling water pump outlet electric door (9), a B rotor cooling water pump inlet electric door (10), a B rotor cooling water pump outlet electric door (12), an A water cooler inlet electric door (14), an A water cooler outlet electric door (16), a B water cooler inlet electric door (17), a B water cooler outlet electric door (19), an A rotor cooling water inlet filter screen front electric door (21), an A rotor cooling water inlet filter screen rear electric door (23), a B rotor cooling water inlet filter screen front electric door (24), a B rotor cooling water inlet filter screen rear electric door (26), and closing the water cooler cooling water return adjusting door (20) after the water cooler cooling water return adjusting door (20) exits from an automatic control state to a manual control state;
4) and the rotor cooling water system is automatically stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010104944.9A CN111431347B (en) | 2020-02-20 | 2020-02-20 | Rotor cooling water system and start-stop control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010104944.9A CN111431347B (en) | 2020-02-20 | 2020-02-20 | Rotor cooling water system and start-stop control method thereof |
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| Publication Number | Publication Date |
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| CN111431347A CN111431347A (en) | 2020-07-17 |
| CN111431347B true CN111431347B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010104944.9A Active CN111431347B (en) | 2020-02-20 | 2020-02-20 | Rotor cooling water system and start-stop control method thereof |
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| CN203445751U (en) * | 2013-08-29 | 2014-02-19 | 广东大唐国际潮州发电有限责任公司 | Generator stator cooling water system |
| CN103929016A (en) * | 2014-04-28 | 2014-07-16 | 中船重工(重庆)海装风电设备有限公司 | Water cooling system of offshore wind generating unit |
| CN105781961A (en) * | 2014-12-26 | 2016-07-20 | 宝钢工程技术集团有限公司 | Process pump unit machine seal cooling water circulation reuse device and application method thereof |
| CN106253581A (en) * | 2016-09-28 | 2016-12-21 | 华北电力科学研究院有限责任公司 | Thermal power plant's Generator Stator Cooling water system and on off control method thereof |
| CN208849630U (en) * | 2018-09-29 | 2019-05-10 | 东方电机控制设备有限公司 | A kind of Generator Stator Cooling water system run using high water tank |
-
2020
- 2020-02-20 CN CN202010104944.9A patent/CN111431347B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203445751U (en) * | 2013-08-29 | 2014-02-19 | 广东大唐国际潮州发电有限责任公司 | Generator stator cooling water system |
| CN103929016A (en) * | 2014-04-28 | 2014-07-16 | 中船重工(重庆)海装风电设备有限公司 | Water cooling system of offshore wind generating unit |
| CN105781961A (en) * | 2014-12-26 | 2016-07-20 | 宝钢工程技术集团有限公司 | Process pump unit machine seal cooling water circulation reuse device and application method thereof |
| CN106253581A (en) * | 2016-09-28 | 2016-12-21 | 华北电力科学研究院有限责任公司 | Thermal power plant's Generator Stator Cooling water system and on off control method thereof |
| CN208849630U (en) * | 2018-09-29 | 2019-05-10 | 东方电机控制设备有限公司 | A kind of Generator Stator Cooling water system run using high water tank |
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| CN111431347A (en) | 2020-07-17 |
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