Technical water supply throttling device, system and method based on relative flow control

Abstract

The invention discloses a technical water supply throttling device, system and method based on relative flow control, and belongs to the field of hydropower station technical water supply system structures. The technical water supply throttling device comprises a signal collector, a valve opening controller, a plurality of temperature sensors, a plurality of pressure transmitters, a plurality of flowmeters and a plurality of electric ball valves with stepping motors; the signal collector and the valve opening controller are both connected into a power station PLC control system, a control port of the signal collector is connected with a first control port of the PLC, and a control port of the valve opening controller is connected with a second control port of the PLC. The mode of manually adjusting the valve can be replaced, energy is saved, efficiency is improved, and stable operation of a unit can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of technical water supply system structure of hydropower stations, and more specifically, to a technical water supply throttling device, system and method based on relative flow control. Background Art

[0002] The power plant's current technical water supply system primarily provides cooling water for the upper conductor cooler, generator air cooler, derivation cooler, and water-conductor cooler. Flow regulation during the water supply process involves manually adjusting the ball valve opening. This valve position remains unchanged after manual adjustment, and the flow rate into the cooler cannot be altered when the cooler temperature changes. This technical water supply system structure presents the following issues: Since the flow rate into the cooler cannot be altered when the cooler temperature changes, and to ensure sufficient cooling water in the cooler, the valve opening often needs to be manually increased, resulting in wasted excess cooling water. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a technical water supply throttling device, system and method based on relative flow control. This solution improves the structure of the technical water supply system and avoids the problem of cooling water being wasted.

[0004] The object of the present invention is achieved through the following solutions:

[0005] A water supply throttling device based on relative flow control technology, comprising:

[0006] Signal collector, valve opening controller, multiple temperature sensors, multiple pressure transmitters, multiple flow meters and multiple electric ball valves with stepper motors;

[0007] The signal collector and the valve opening controller are both connected to the power station PLC control system, and the control port of the signal collector is connected to the first control port of the PLC controller, and the control port of the valve opening controller is connected to the second control port of the PLC controller;

[0008] A temperature sensor is installed at the upper guide bearing position of the upper guide cooler of the technical water supply system, and a pressure transmitter, a flow meter, and an electric ball valve with a stepper motor are installed on the pipeline that discharges the tail water from the upper guide cooler to the downstream. The data output ends of the temperature sensor, the pressure transmitter, the flow meter, and the electric ball valve with a stepper motor are all connected to the data input end of the signal collector; the first control output end of the valve opening controller is connected to the control input end of the electric ball valve with a stepper motor;

[0009] The fifth control output end of the valve opening controller is connected to the control input end of the electric ball valve five with a stepper motor installed in the downstream tail water discharge pipe; the sixth control output end of the valve opening controller is connected to the control input end of the electric ball valve six with a stepper motor installed at the water intake; the seventh control output end of the valve opening controller is connected to the control input end of the pressure reducing valve installed in the leakage collection well; an electromagnetic flowmeter is connected to the pipeline of the electric ball valve five with a stepper motor, and the data output end of the electromagnetic flowmeter is connected to the data input end of the signal collector; a pressure transmitter five is connected to the pipeline of the pressure reducing valve in the leakage collection well, and the data output end of the pressure transmitter five is connected to the data input end of the signal collector.

[0010] Furthermore, a temperature sensor 1 is installed at the generator air cooler position, and a pressure transmitter 2, a flow meter 2 and an electric ball valve 2 with a stepper motor are installed on the pipeline draining from the generator air cooler to the downstream tail water, and the data output ends of the temperature sensor 2, the pressure transmitter 2, the flow meter 2 and the electric ball valve 2 with a stepper motor are all connected to the data input end of the signal collector; the second control output end of the valve opening controller is connected to the control input end of the electric ball valve 2 with a stepper motor.

[0011] Furthermore, a temperature sensor three is installed at the thrust bearing position of the derivation cooler, and a pressure transmitter three, a flow meter three and an electric ball valve three with a stepper motor are installed on the pipeline discharged from the derivation cooler to the downstream tail water, and the data output ends of the temperature sensor three, the pressure transmitter three, the flow meter three and the electric ball valve three with the stepper motor are all connected to the data input end of the signal collector; the third control output end of the valve opening controller is connected to the control input end of the electric ball valve three with the stepper motor.

[0012] Furthermore, a temperature sensor four is installed at the water guide bearing position of the water guide cooler, and a pressure transmitter four, a flow meter four and an electric ball valve four with a stepper motor are installed on the pipeline discharging from the water guide cooler to the downstream tail water, and the data output ends of the temperature sensor four, the pressure transmitter four, the flow meter four and the electric ball valve four with a stepper motor are all connected to the data input end of the signal collector; the fourth control output end of the valve opening controller is connected to the control input end of the electric ball valve four with a stepper motor.

[0013] Furthermore, the PLC controller includes a modular PLC controller.

[0014] A technical water supply system based on relative flow control comprises a technical water supply throttling device based on relative flow control as described in any one of the above items.

[0015] A technical water supply throttling method based on relative flow control, based on the technical water supply system as described above, performs the following steps:

[0016] The valve opening is controlled by an artificial intelligence model device. The operating data is used to train the position of a given valve, thereby saving the cooling water consumption of the technical water supply system. The temperature, flow and pressure changes of the cooler are monitored in real time, and the artificial intelligence model device is used to make the corresponding optimal solution, thereby accurately ensuring the temperature of the cooler and achieving stable operation of the unit.

[0017] Furthermore, the method of using the operating data to train a given valve position specifically includes the sub-steps of setting the valve setting value opening to zero to ensure that even if the valve fails, the system will not be cut off from water for a short time, causing the cooler temperature to rise.

[0018] Furthermore, the set value opening is 50% opening.

[0019] Beneficial effects of the present invention:

[0020] The present invention installs a temperature sensor at the cooler position of the technical water supply system, as well as a corresponding signal collector and controller. The temperature sensor data is transmitted to the controller via the signal collector. The collected temperature value corresponds to the required relative flow rate of cooling water. Once the corresponding temperature value condition is collected, the valve opening of the corresponding electric ball valve is triggered to control the valve opening, thereby reducing the valve opening to achieve a throttling effect while ensuring that the internal temperature of the cooler remains unchanged. This device structure can replace manually adjusted valves, not only saving energy but also increasing efficiency, and providing a guarantee for the stable operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described below are only some embodiments of the present invention. Those skilled in the art can derive other drawings based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0023] All features disclosed in all embodiments in this specification, or steps in all methods or processes implicitly disclosed, except for mutually exclusive features and / or steps, can be combined or replaced in any manner.

[0024] The technical solutions of the present invention are described in further detail below with reference to the accompanying drawings. However, the scope of protection of the present invention is not limited to the following. Unless otherwise stated, any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by alternative features that are equivalent or have similar purposes. That is, unless otherwise stated, each feature is merely an example of a series of equivalent or similar features.

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] Before describing the embodiments, some necessary terms need to be explained. For example:

[0027] If the terms "first", "second" and the like are used to describe various elements in this application, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, the "first" element discussed below may also be referred to as the "second" element without departing from the teachings of the present invention. It should be understood that when an element is "connected" or "coupled" to another element, it may be directly connected or directly coupled to the other element or there may be an intermediate element. On the contrary, when an element is "directly connected" or "directly coupled" to another element, there is no intermediate element.

[0028] Various terms appearing in the present application are used only for the purpose of describing particular embodiments and are not intended to limit the present invention. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well.

[0029] When the terms "include" and / or "comprising" are used in this specification, these terms indicate the existence of the stated features, integers, steps, operations, elements and / or parts, but do not exclude the existence and / or addition of one or more other features, integers, steps, operations, elements, parts and / or groups thereof.

[0030] In one embodiment, if Figure 1 As shown, a water supply throttling device based on relative flow control technology is characterized in that it includes: a signal collector, a valve opening controller, multiple temperature sensors, multiple pressure transmitters, multiple flow meters and multiple electric ball valves with stepper motors;

[0031] The signal collector and the valve opening controller are both connected to the power station PLC control system, and the control port of the signal collector is connected to the first control port of the PLC controller, and the control port of the valve opening controller is connected to the second control port of the PLC controller;

[0032] A temperature sensor is installed at the upper guide bearing position of the upper guide cooler of the technical water supply system, and a pressure transmitter, a flow meter, and an electric ball valve with a stepper motor are installed on the pipeline that discharges the tail water from the upper guide cooler to the downstream. The data output ends of the temperature sensor, the pressure transmitter, the flow meter, and the electric ball valve with a stepper motor are all connected to the data input end of the signal collector; the first control output end of the valve opening controller is connected to the control input end of the electric ball valve with a stepper motor;

[0033] The fifth control output end of the valve opening controller is connected to the control input end of the electric ball valve five with a stepper motor installed in the downstream tail water discharge pipe; the sixth control output end of the valve opening controller is connected to the control input end of the electric ball valve six with a stepper motor installed at the water intake; the seventh control output end of the valve opening controller is connected to the control input end of the pressure reducing valve installed in the leakage collection well; an electromagnetic flowmeter is connected to the pipeline of the electric ball valve five with a stepper motor, and the data output end of the electromagnetic flowmeter is connected to the data input end of the signal collector; a pressure transmitter five is connected to the pipeline of the pressure reducing valve in the leakage collection well, and the data output end of the pressure transmitter five is connected to the data input end of the signal collector.

[0034] In other embodiments, a temperature sensor 1 is installed at the generator air cooler position, and a pressure transmitter 2, a flow meter 2 and an electric ball valve 2 with a stepper motor are installed on the pipeline discharged from the generator air cooler to the downstream tail water, and the data output ends of the temperature sensor 2, the pressure transmitter 2, the flow meter 2 and the electric ball valve 2 with a stepper motor are all connected to the data input end of the signal collector; the second control output end of the valve opening controller is connected to the control input end of the electric ball valve 2 with a stepper motor.

[0035] In other embodiments, a temperature sensor three is installed at the thrust bearing position of the derivation cooler, and a pressure transmitter three, a flow meter three and an electric ball valve three with a stepper motor are installed on the pipeline discharged from the derivation cooler to the downstream tail water, and the data output ends of the temperature sensor three, the pressure transmitter three, the flow meter three and the electric ball valve three with the stepper motor are all connected to the data input end of the signal collector; the third control output end of the valve opening controller is connected to the control input end of the electric ball valve three with the stepper motor.

[0036] In other embodiments, a temperature sensor four is installed at the water guide bearing position of the water guide cooler, and a pressure transmitter four, a flow meter four and an electric ball valve four with a stepper motor are installed on the pipeline discharging from the water guide cooler to the downstream tail water, and the data output ends of the temperature sensor four, the pressure transmitter four, the flow meter four and the electric ball valve four with a stepper motor are all connected to the data input end of the signal collector; the fourth control output end of the valve opening controller is connected to the control input end of the electric ball valve four with a stepper motor.

[0037] In other embodiments, the PLC controller comprises a modular PLC controller.

[0038] In other embodiments, a technical water supply system based on relative flow control is provided, characterized in that it includes a technical water supply throttling device based on relative flow control as described in any one of the above embodiments.

[0039] In other embodiments, a technical water supply throttling method based on relative flow control is provided. Based on the technical water supply system described in the above embodiment, the following steps are performed:

[0040] The valve opening is controlled by an artificial intelligence model device. The operating data is used to train the position of a given valve, thereby saving the cooling water consumption of the technical water supply system. The temperature, flow and pressure changes of the cooler are monitored in real time, and the artificial intelligence model device is used to make the corresponding optimal solution, thereby accurately ensuring the temperature of the cooler and achieving stable operation of the unit.

[0041] In other embodiments, the use of operating data training to give a given valve position specifically includes the sub-step of setting the valve setting value opening to zero to ensure that even if the valve fails, the system will not be cut off from water for a short time, causing the cooler temperature to rise.

[0042] In other embodiments, the set value opening is 50% opening.

[0043] The working process of the present invention is:

[0044] In the current power plant's water supply system, an additional temperature sensor 3 is installed at the upper guide bearing position of the upper guide cooler. A pressure transmitter 4, a flowmeter 5, and an electric ball valve 6 with a stepper motor are installed in the drainage path, along with a corresponding signal collector 1 and valve opening controller 2. Both the signal collector 1 and the valve opening controller 2 are connected to the power plant's PLC control system, with the control port of the signal collector 1 connected to the first control port of the PLC controller, and the control port of the valve opening controller connected to the second control port of the PLC controller. The temperature sensor 3 is connected to the signal collector 1 and uses the collected temperature value to correspond to the required relative flow rate of cooling water. Once the corresponding temperature value condition is collected, the valve opening of the corresponding electric ball valve is triggered to control the valve. This reduces the valve opening to achieve a throttling effect while ensuring that the internal temperature of the cooler remains unchanged. This device structure, when implemented, can replace the existing method of manually adjusting valves, saving energy and increasing efficiency, ensuring the stable operation of the unit.

[0045] The remaining technical features of this embodiment can be flexibly selected by those skilled in the art to meet different specific practical needs based on actual circumstances. However, it is obvious to those skilled in the art that these specific details are not required to practice the present invention. In other examples, to avoid obscuring the present invention, well-known components, structures, or parts are not described in detail, and are therefore within the scope of the technical solutions claimed in the claims of the present invention.

[0046] In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed", "installed", "connected", and "connected" are all used in a broad sense and should be understood by those skilled in the art. For example, it can be a fixed connection, a movable connection, an integral connection, a partial connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components, etc. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. That is, the expression of textual language and the implementation of actual technology can be flexibly corresponded, and the expression of the textual language of the specification of the present invention (including the drawings) does not constitute any single restrictive interpretation of the claims.

[0047] Modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the claims appended hereto. In the foregoing description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessarily required to practice the present invention. In other instances, well-known techniques have not been described in detail to avoid obscuring the present invention.

Claims

1. A water supply throttling device based on relative flow control technology, characterized in that: include: Signal collector, valve opening controller, multiple temperature sensors, multiple pressure transmitters, multiple flow meters and multiple electric ball valves with stepper motors; The signal collector and the valve opening controller are both connected to the power station PLC control system, and the control port of the signal collector is connected to the first control port of the PLC controller, and the control port of the valve opening controller is connected to the second control port of the PLC controller; A temperature sensor is installed at the upper guide bearing position of the upper guide cooler of the technical water supply system, and a pressure transmitter, a flow meter, and an electric ball valve with a stepper motor are installed on the pipeline that discharges the tail water from the upper guide cooler to the downstream. The data output ends of the temperature sensor, the pressure transmitter, the flow meter, and the electric ball valve with a stepper motor are all connected to the data input end of the signal collector; the first control output end of the valve opening controller is connected to the control input end of the electric ball valve with a stepper motor; The fifth control output end of the valve opening controller is connected to the control input end of the electric ball valve five with a stepper motor installed in the downstream tail water discharge pipe; the sixth control output end of the valve opening controller is connected to the control input end of the electric ball valve six with a stepper motor installed at the water intake; the seventh control output end of the valve opening controller is connected to the control input end of the pressure reducing valve installed in the leakage collection well; an electromagnetic flowmeter is connected to the pipeline of the electric ball valve five with a stepper motor, and the data output end of the electromagnetic flowmeter is connected to the data input end of the signal collector; a pressure transmitter five is connected to the pipeline of the pressure reducing valve in the leakage collection well, and the data output end of the pressure transmitter five is connected to the data input end of the signal collector.

2. The water supply throttling device based on relative flow control technology according to claim 1 is characterized in that: A temperature sensor 1 is installed at the generator air cooler position, and a pressure transmitter 2, a flow meter 2 and an electric ball valve 2 with a stepper motor are installed on the pipeline draining from the generator air cooler to the downstream tail water. The data output ends of the temperature sensor 2, the pressure transmitter 2, the flow meter 2 and the electric ball valve 2 with a stepper motor are all connected to the data input end of the signal collector; the second control output end of the valve opening controller is connected to the control input end of the electric ball valve 2 with a stepper motor.

3. The water supply throttling device based on relative flow control technology according to claim 1 is characterized in that: A temperature sensor three is installed at the thrust bearing position of the derivation cooler, and a pressure transmitter three, a flow meter three and an electric ball valve three with a stepper motor are installed on the pipeline discharged from the derivation cooler to the downstream tail water. The data output ends of the temperature sensor three, the pressure transmitter three, the flow meter three and the electric ball valve three with the stepper motor are all connected to the data input end of the signal collector; the third control output end of the valve opening controller is connected to the control input end of the electric ball valve three with the stepper motor.

4. The water supply throttling device based on relative flow control technology according to claim 1 is characterized in that: A temperature sensor 4 is installed at the water guide bearing position of the water guide cooler, and a pressure transmitter 4, a flow meter 4 and an electric ball valve 4 with a stepper motor are installed on the pipeline discharging from the water guide cooler to the downstream tail water. The data output ends of the temperature sensor 4, the pressure transmitter 4, the flow meter 4 and the electric ball valve 4 with a stepper motor are all connected to the data input end of the signal collector; the fourth control output end of the valve opening controller is connected to the control input end of the electric ball valve 4 with the stepper motor.

5. The water supply throttling device based on relative flow control technology according to claim 1 is characterized in that: The PLC controller includes a modular PLC controller.

6. A water supply system based on relative flow control technology, characterized in that, The invention comprises a water supply throttling device based on relative flow control technology as described in any one of claims 1 to 5.

7. A water supply throttling method based on relative flow control technology, characterized in that: Based on the technical water supply system according to claim 6, the following steps are performed: The valve opening is controlled by an artificial intelligence model device. The operating data is used to train the position of a given valve, thereby saving the cooling water consumption of the technical water supply system. The temperature, flow and pressure changes of the cooler are monitored in real time, and the artificial intelligence model device is used to make the corresponding optimal solution, thereby accurately ensuring the temperature of the cooler and achieving stable operation of the unit.

8. The water supply throttling method based on relative flow control technology according to claim 7 is characterized in that: The method of using the operating data to train a given valve position specifically includes the following sub-steps: setting the valve setting value opening to zero to ensure that even if the valve fails, the system will not be cut off from water for a short time, causing the cooler temperature to rise.

9. The water supply throttling method based on relative flow control technology according to claim 8 is characterized in that: The set value opening is 50% opening.

Images