Alternating method, device and equipment for draining pumps of water-collecting well and medium

Abstract

The invention discloses a water collecting well drainage pump alternation method, device and equipment and a medium. The method comprises the steps that the operation duration of each drainage pump is obtained in real time, the drainage pumps are divided into a plurality of pump sets according to the operation duration, each pump set comprises at least one drainage pump, and the pump starting water level of each pump set is determined; and when the water level of the water collecting well exceeds each pump starting water level, the corresponding pump set is started and timed, the previous pump set is stopped, and the operation duration of the previous pump set is emptied. On the premise that the standby drainage pump is started in time and drainage is conducted in time, equipment damage is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of maintenance of hydro-generators, and in particular to a method, device, equipment and medium for rotating drainage pumps in a sump. Background Art

[0002] The maintenance of hydro-turbine generators often requires drainage maintenance, that is, after the upstream and downstream maintenance doors of the hydro-turbine generators fall, the water in the pressure steel pipe and tailwater flow channel is drained to the maintenance sump and then discharged through the pump to meet the maintenance conditions. At present, the rotation method adopted by the maintenance drainage pumps is mostly as follows: 1. Start the pump after reaching the pump start water level; 2. After starting one pump, the water level continues to rise. When the water level rises to the water level for starting the second pump, the second pump is started, and so on; 3. When the water level drops to the pump stop water level, the water pump stops; 4. After the current pump stops, the pump start priority of this pump is adjusted to the last.

[0003] The unit maintenance pressure steel pipe and tailwater flow channel have a large drainage volume, and the drainage pumps that need to be started for a long time and in large numbers. Therefore, if the water level does not reach the pump stop level for a long time, the first few pumps started will run for too long, and the equipment rotation effect will not be achieved, which is very likely to cause equipment damage. If a large amount of water suddenly flows into the water collection well at this time, there is also a risk of flooding the plant. Therefore, when the unit is overhauled and drained, it is necessary to monitor the water level of the water collection well all the time, and manually start the pump remotely to control the water level of the water collection well in time. Summary of the invention

[0004] The purpose of this application is to overcome the defects of the prior art and provide a method, device, equipment and medium for rotating the drainage pump of a sump, so that the drainage pump can achieve the effect of equipment rotation when the turbine generator is draining water.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] A method for rotating a drainage pump in a water collection well, the method comprising:

[0007] Acquire the operating time of each drainage pump in real time, divide the drainage pumps into a plurality of pump groups according to the operating time, each pump group includes at least one drainage pump, and determine the pump start water level of each pump group;

[0008] When the water level in the sump exceeds the water level of each pump start-up level, start the corresponding pump group and start timing. At the same time, stop the previous pump group and clear the running time of the previous pump group.

[0009] Furthermore, the method further comprises:

[0010] Before grouping the water pumps, the drainage pumps are numbered from shortest to longest according to their running time, and each drainage pump is managed by number.

[0011] Furthermore, when the water level in the water collection well exceeds the pump-starting water level of the last pump group, an alarm signal is also issued.

[0012] On the other hand, the present application also provides a water collection well drainage pump rotation device, the device comprising:

[0013] A water pump grouping module, wherein the water pump grouping module obtains the operating time of each drainage pump in real time, divides the drainage pumps into a plurality of pump groups according to the operating time, each pump group includes at least one drainage pump, and determines the pump start water level of each pump group;

[0014] The duration management module starts the corresponding pump group and starts timing when the water level in the sump exceeds the water level of each pump start-up, stops the previous pump group at the same time, and clears the operating time of the previous pump group.

[0015] Furthermore, the device also includes:

[0016] A water pump numbering module is used to number the drainage pumps from shortest to longest according to the running time before the water pumps are grouped, so as to manage each drainage pump by number.

[0017] Furthermore, the device also includes:

[0018] An alarm module is provided, wherein the alarm module also sends out an alarm signal when the water level of the water collection well exceeds the pump start water level of the last pump group.

[0019] On the other hand, the present application also provides a computer device, which includes a processor and a memory, wherein the memory stores a computer program, and the computer program is loaded and executed by the processor to implement any of the above-mentioned methods for rotating the drainage pump of a hydro-turbine generator.

[0020] On the other hand, the present application also provides a computer-readable storage medium, in which a computer program is stored. The computer program is loaded and executed by a processor to implement any of the above-mentioned methods for rotating a drainage pump of a hydro-turbine generator.

[0021] The beneficial effects of this application are:

[0022] (1) The present application can start the standby drainage pump in time to achieve the effect of timely drainage and reduce the risk of flooding the plant. In addition, the present application introduces the statistics of pump start-up time into the routine rotation process of unit maintenance and drainage, and introduces it into the rotation process to avoid long-term startup of equipment and damage to equipment.

[0023] (2) This application can reduce manual monitoring and intervention and improve the level of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a flowchart of the method for rotating the drainage pump of the sump well in the embodiment of the present application. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0027] The current rotation method of drainage pumps, when the water level does not reach the pump stop level for a long time, will cause the first few pumps to run too long, and the equipment rotation effect will not be achieved, which is very likely to cause equipment damage. If a large amount of water suddenly flows into the water collection well at this time, there is also a risk of flooding the plant. Therefore, when the unit is overhauled and drained, it is necessary to monitor the water level of the water collection well all the time, and manually start the pump remotely to control the water level of the water collection well in time.

[0028] In order to solve the above technical problems, the following embodiments of the method, device, equipment and medium for rotating the drainage pump of the hydraulic generator of the present application are proposed.

[0029] Example 1

[0030] This embodiment is described by taking the rotation of 6 water pumps as an example.

[0031] Reference Figure 1 , as shown in the figure, is a flowchart of a method for rotating a water collection well drainage pump provided in an embodiment of the present application, and the method specifically includes the following structure:

[0032] Step 1: Initialization setting, assign the water level H of the maintenance water collection well to 0m, assign the water level h0 of the pump stop to 328.5m, assign the water level h1 of the No. 1 pump to 331.8m, assign the water level h2 of the No. 2 pump to 335m, assign the water level h3 of the No. 3 and No. 4 pumps to 339m, assign the water level h4 of the No. 5 and No. 6 pumps to 343m, assign the pump operation timing parameters t1~t3 to 0min, where t1 is the cumulative time after the No. 1 pump is started, t2 is the cumulative time after the No. 2 pump is started, t3 is the cumulative time after the No. 3 and No. 4 pumps are started, and the setting time T is assigned to 60min. In this embodiment, the values ​​of h1~h3 are determined according to the volume and shape of the water collection well and the power of the drainage pump.

[0033] It should be noted that since the water level has reached the dangerous high level when pumps No. 5 and No. 6 are started, the pumps cannot be stopped at this time. Therefore, the running time of these pumps is not timed, and only the water level height is used as the enabling signal for pumps No. 5 and No. 6 to control whether they are running.

[0034] Step 2: Read the running time of the 6 drainage pumps, and number the 6 drainage pumps from No. 1 to No. 6 according to the running time from short to long;

[0035] Step 3: Read the water level H of the sump. This value is refreshed every second. When the water level rises to h1 < H, start pump No. 1 and start timing t1. When the timing of t1 reaches the set value T, stop pump No. 1, clear t1, and execute Step 2;

[0036] Step 4: When the water level of the sump rises to h2 < H, start pump No. 2 and start timing t2. When the timing of t2 reaches the set value T, stop pumps No. 1 and No. 2, and clear t1 and t2; otherwise, execute Steps 2 - 3;

[0037] Step 5: When the water level of the sump rises to h3 < H, start pumps No. 3 and No. 4 and start timing t3. When the timing of t3 reaches the set value T, stop pumps No. 1 - No. 4, and clear t1 - t3; otherwise, execute Steps 2 - 4;

[0038] Step 6: When the water level of the sump rises to h4 < H, start pumps No. 5 and No. 6 and issue a high water level alarm, and the process ends.

[0039] The method for rotating the drainage pumps of the sump provided in this embodiment can start the standby drainage pump in time during the tail water drainage, achieving the effect of timely drainage, reducing the risk of flooding the plant. And in this application, the start - up duration statistics is introduced into the conventional rotation process of the unit maintenance drainage, and it is introduced into the rotation process to avoid the equipment being started for a long time and causing equipment damage. This method can reduce manual monitoring and manual intervention, and improve the automation level.

[0040] Embodiment 2

[0041] Based on the foregoing embodiment, this embodiment proposes a virtual device, and the structure of the water - turbine generator drainage pump rotation device is as follows:

[0042] The water pump grouping module: The water pump grouping module obtains the running time of each drainage pump in real - time, divides the drainage pumps into multiple pump groups according to the running time, each pump group includes at least one drainage pump, and determines the pump - starting water level of each pump group;

[0043] The duration management module: When the water level of the sump exceeds each pump - starting water level, the duration management module starts the corresponding pump group and times, while stopping the previous pump group and clearing the running time of the previous pump group.

[0044] As an embodiment, the device further includes:

[0045] The water pump numbering module numbers the drainage pumps from shortest to longest according to their running time before grouping the water pumps, and manages each drainage pump by number.

[0046] As an embodiment, the device further includes:

[0047] Alarm module: When the water level in the sump exceeds the start-up water level of the last pump group, the alarm module will also send out an alarm signal.

[0048] Example 3

[0049] This preferred embodiment provides a computer device, which can implement the steps in any embodiment of the sump drainage pump rotation method provided in the embodiments of the present application. Therefore, the beneficial effects of the sump drainage pump rotation method provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0050] Example 4

[0051] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructions, or by controlling related hardware through instructions, and the instructions can be stored in a computer-readable storage medium and loaded and executed by a processor. To this end, an embodiment of the present application provides a storage medium, which stores a plurality of instructions, and the instructions can be loaded by a processor to execute the steps of any embodiment of the method for rotating a drainage pump of a hydro-turbine generator provided in the embodiment of the present application.

[0052] The storage medium may include: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0053] Since the instructions stored in the storage medium can execute the steps in any embodiment of the sump drainage pump rotation method provided in the embodiments of the present application, the beneficial effects that can be achieved by any sump drainage pump rotation method provided in the embodiments of the present application can be achieved. Please see the previous embodiments for details and will not be repeated here.

[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for rotating a drainage pump in a water collection well, characterized in that: The method comprises: Acquire the operating time of each drainage pump in real time, divide the drainage pumps into a plurality of pump groups according to the operating time, each pump group includes at least one drainage pump, and determine the pump start water level of each pump group; When the water level in the sump exceeds the water level of each pump start-up level, start the corresponding pump group and start timing. At the same time, stop the previous pump group and clear the running time of the previous pump group.

2. The method for rotating a water collection well drainage pump according to claim 1, characterized in that: The method further comprises: Before grouping the water pumps, the drainage pumps are numbered from shortest to longest according to their running time, and each drainage pump is managed by number.

3. The method for rotating a water collection well drainage pump according to claim 1, characterized in that: When the water level in the water collection well exceeds the pump-starting water level of the last pump group, an alarm signal is also issued.

4. A water collection well drainage pump rotation device, characterized in that: The device comprises: A water pump grouping module, wherein the water pump grouping module obtains the operating time of each drainage pump in real time, divides the drainage pumps into a plurality of pump groups according to the operating time, each pump group includes at least one drainage pump, and determines the pump start water level of each pump group; The duration management module starts the corresponding pump group and starts timing when the water level in the sump exceeds the water level of each pump start-up, stops the previous pump group at the same time, and clears the operating time of the previous pump group.

5. The sump pump rotation device according to claim 4, characterized in that: The device also includes: A water pump numbering module is used to number the drainage pumps from shortest to longest according to the running time before the water pumps are grouped, so as to manage each drainage pump by number.

6. The sump pump rotation device according to claim 4, characterized in that: The device also includes: An alarm module is provided, wherein the alarm module also sends out an alarm signal when the water level of the water collection well exceeds the pump start water level of the last pump group.

7. A computer device, characterized in that: The computer device includes a processor and a memory, wherein a computer program is stored in the memory, and the computer program is loaded and executed by the processor to implement the method for rotating the drainage pump of a hydraulic generator as described in any one of claims 1 to 3.

8. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which is loaded and executed by a processor to implement the method for rotating a drainage pump in a sump as described in any one of claims 1 to 3.

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