Circulating water quantity monitoring method, system and device of indirect air cooling tower

Abstract

The embodiment of the invention provides a circulating water quantity monitoring method, system and device of an indirect air cooling tower. The method comprises the steps that a pressure gauge is installed on a circulating water pump outlet main pipe; by taking the diameter of the mother pipe as a reference, installing an ultrasonic flowmeter at a target position of the mother pipe; adjusting the operation mode of the circulating water pump, and synchronously recording the reading of the pressure gauge and the data of the ultrasonic flowmeter; according to the reading of the pressure gauge and the data of the ultrasonic flowmeter, drawing a relation curve of the pressure and the flow of the mother pipe; and querying the relation curve based on the current reading of the pressure gauge to obtain the real-time circulating water volume. Based on a mapping mechanism of a pressure and flow relation curve, the flow monitoring precision is guaranteed, and the data reliability is improved; only the pressure gauge needs to be maintained, the maintenance burden of professional equipment is reduced, and the operation and maintenance convenience is improved; according to the embodiment of the invention, the low-cost real-time monitoring of the circulating water quantity is realized through the cooperation of the pressure gauge and the ultrasonic flowmeter.

Description

Technical Field

[0001] The present application belongs to the technical field of indirect air-cooling towers, and specifically relates to a method, system and device for monitoring circulating water volume of an indirect air-cooling tower. Background Art

[0002] Circulating water flow in indirect air-cooling towers is a critical monitoring parameter for power plant cold-end systems, but real-time data on this parameter has long been lacking. This is primarily due to piping complexity, which makes conventional flow measurement equipment difficult to install. Furthermore, cost constraints mean that high-precision flow monitoring equipment is expensive, making power plants generally unwilling to bear the cost of purchasing and maintaining it.

[0003] As the demand for deep peak regulation in power systems grows, power plant cold-end systems must also participate in peak regulation. As a core regulation parameter, the need for monitoring circulating water volume is becoming increasingly prominent. However, achieving low-cost, high-precision, real-time monitoring of circulating water volume has always been a technical challenge plaguing power plants. Summary of the Invention

[0004] The present application proposes a method, system and device for monitoring the circulating water volume of an indirect air-cooling tower, which are used to solve the defects of the above-mentioned prior art.

[0005] According to a first aspect of an embodiment of the present application, a method for monitoring circulating water flow in an indirect air-cooling tower is provided, comprising:

[0006] Install a pressure gauge on the outlet main pipe of the circulating water pump;

[0007] With reference to the diameter of the main pipe, an ultrasonic flow meter is installed at a target position of the main pipe;

[0008] Adjust the operating mode of the circulating water pump and simultaneously record the pressure gauge reading and ultrasonic flow meter data;

[0009] Draw a main pipe pressure and flow relationship curve based on the pressure gauge reading and the ultrasonic flowmeter data;

[0010] The relationship curve is queried based on the current pressure gauge reading to obtain the real-time circulating water volume.

[0011] In some embodiments, the pressure gauge is connected through the main pipe opening, and the measurement accuracy of the pressure gauge is ±0.01 kPa.

[0012] In some embodiments, the target position of the mother pipe includes an upstream pipe section position and a downstream pipe section position, and installing the ultrasonic flowmeter at the target position of the mother pipe with reference to the mother pipe diameter of the mother pipe includes:

[0013] The ultrasonic flowmeter is installed at a position of the upstream pipe section that is not less than ten times the diameter of the main pipe; and / or

[0014] The ultrasonic flowmeter is installed at a position of the downstream pipe section that is not less than five times the diameter of the main pipe.

[0015] In some embodiments, adjusting the operation mode of the circulating water pump includes:

[0016] Start and stop different water pump combinations or adjust the water pump speed.

[0017] In some embodiments, drawing a main pipe pressure and flow relationship curve based on the pressure gauge reading and the ultrasonic flow meter data includes:

[0018] Based on the operating conditions of multiple groups of different water pumps, the pressure and flow data points are fitted according to the pressure gauge readings and the ultrasonic flow meter data to generate the main pipe pressure and flow relationship curve.

[0019] In some embodiments, after querying the relationship curve based on the current pressure gauge reading, the method includes:

[0020] Remove the ultrasonic flow meter to control costs and ensure convenient operation and maintenance.

[0021] According to a second aspect of an embodiment of the present application, a circulating water flow monitoring system for an indirect air cooling tower is provided, comprising:

[0022] Pressure gauge installation module, used to install the pressure gauge on the circulating water pump outlet main pipe;

[0023] a flow meter installation module, for installing an ultrasonic flow meter at a target position of the main pipe with reference to the main pipe diameter of the main pipe;

[0024] A data measurement and control module is used to adjust the operation mode of the circulating water pump and synchronously record the pressure gauge reading and ultrasonic flow meter data;

[0025] A relationship simulation module, used for drawing a main pipe pressure and flow relationship curve based on the pressure gauge reading and the ultrasonic flow meter data;

[0026] The real-time acquisition module is used to query the relationship curve based on the current pressure gauge reading to obtain the real-time circulating water volume.

[0027] According to a third aspect of an embodiment of the present application, a circulating water flow monitoring device for an indirect air cooling tower is provided, for implementing the above method, comprising:

[0028] Pressure gauge installed on the outlet main pipe of the circulating water pump;

[0029] an ultrasonic flow meter detachably mounted at a target position of the mother pipe;

[0030] A database or storage module storing a main pipe pressure and flow relationship curve.

[0031] In some embodiments, the ultrasonic flow meter is a temporarily installed component and is removed after the main pipe pressure and flow relationship curve is established.

[0032] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored, characterized in that when the program is executed by a processor, the above-mentioned pin fast swapping method is implemented.

[0033] The beneficial effects of the method, system, and device for monitoring circulating water volume of an indirect air-cooling tower according to the embodiments of the present application include at least:

[0034] The embodiment of the present application only requires a single pressure gauge for long-term operation, which simplifies the structure and significantly reduces the complexity of the equipment. By temporarily installing an ultrasonic flow meter to establish a relationship curve and then removing it, the long-term use of a high-cost flow meter is avoided, effectively optimizing and controlling costs. The mapping mechanism based on the pressure-flow relationship curve ensures flow monitoring accuracy and improves data reliability. The present application only requires the maintenance of a pressure gauge, reducing the maintenance burden of professional equipment and improving the convenience of operation and maintenance. The present application also directly obtains the circulating water volume through the pressure gauge reading, significantly improving the response speed and obtaining a real-time response. The embodiment of the present application achieves low-cost real-time monitoring of the circulating water volume by coordinating the pressure gauge with the ultrasonic flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a flow chart of a method for monitoring circulating water volume of an indirect air cooling tower according to an embodiment of the present application;

[0036] Figure 2 This is a structural schematic diagram of the circulating water volume monitoring system of the indirect air cooling tower according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, i.e., the present application is not limited to the described embodiments.

[0039] Refer to the attached Figure 1As shown, the present embodiment discloses specific implementation steps of a method for monitoring circulating water flow in an indirect air-cooling tower. The method is implemented using a circulating water flow monitoring system for the indirect air-cooling tower. The circulating water flow monitoring system includes a circulating water flow monitoring device configured in the indirect air-cooling tower and a readable storage medium, ensuring that those skilled in the art can implement the technical solution of the present application accordingly. The method specifically includes the following steps 110-150.

[0040] Step 110: Install a pressure gauge on the outlet main pipe of the circulating water pump.

[0041] Among them, the circulating water pump outlet main pipe refers to the confluence main pipe connected to the rear end of the circulating water pump outlet. Its functions include fluid collection and pressure monitoring points, etc. Specifically, it can be used to collect the cooling water output by a single or multiple circulating water pumps and install a pressure gauge in the main pipe body to measure the total water pressure at the pump outlet.

[0042] The diameter of the circulating water pump outlet main pipe of the present application can be a commonly used pipe diameter greater than 500 mm, and the length of the straight pipe section can meet the fluid stability requirements.

[0043] In some embodiments, a pressure gauge is connected through a hole in the main pipe, and the pressure gauge has a measurement accuracy of ±0.01 kPa. For example, a hole is opened on the outlet main pipe of a circulating water pump, and a pressure gauge is connected through the hole to monitor the water pressure in the water pump outlet main pipe.

[0044] Step 120 : installing an ultrasonic flow meter at a target position of the main pipe with reference to the main pipe diameter of the main pipe.

[0045] In some embodiments, the target position of the mother pipe includes an upstream pipe segment position and a downstream pipe segment position.

[0046] In some embodiments, with the main pipe diameter of the main pipe as a reference, installing an ultrasonic flowmeter at a target position of the main pipe includes: installing the ultrasonic flowmeter at an upstream pipe section position that is not less than ten times the main pipe diameter (ten times the main pipe diameter can be replaced by 10D, where D represents the actual measured value of the inner diameter of the main pipe diameter); and / or installing the ultrasonic flowmeter at a downstream pipe section position that is not less than five times the main pipe diameter.

[0047] In some embodiments, the pressure gauge or ultrasonic flow meter may be connected via threads or flanges.

[0048] Step 130: Adjust the operating mode of the circulating water pump and synchronously record the pressure gauge reading and ultrasonic flow meter data.

[0049] In some embodiments, adjusting the operation mode of the circulating water pump includes: starting and stopping different water pump combinations or adjusting the water pump speed.

[0050] Step 140: Draw a main pipe pressure and flow relationship curve based on the pressure gauge reading and ultrasonic flow meter data.

[0051] In some embodiments, drawing a main pipe pressure and flow relationship curve based on pressure gauge readings and ultrasonic flow meter data includes: based on the operating conditions of multiple groups of different water pumps, fitting pressure and flow data points according to pressure gauge readings and ultrasonic flow meter data to generate a main pipe pressure and flow relationship curve.

[0052] Step 150: query the relationship curve based on the current pressure gauge reading to obtain the real-time circulating water volume.

[0053] In some embodiments, after querying the relationship curve based on the current pressure gauge reading, the method includes: removing the ultrasonic flow meter to control costs and ensure convenient operation and maintenance.

[0054] In some embodiments, the ultrasonic flow meter is removed and the pressure gauge on the outlet main pipe of the circulating water pump is retained.

[0055] The embodiment of the present application only requires a single pressure gauge for long-term operation, which simplifies the structure and significantly reduces the complexity of the equipment. By temporarily installing an ultrasonic flow meter to establish a relationship curve and then removing it, the long-term use of a high-cost flow meter is avoided, effectively optimizing and controlling costs. The mapping mechanism based on the pressure-flow relationship curve ensures flow monitoring accuracy and improves data reliability. The present application only requires the maintenance of a pressure gauge, reducing the maintenance burden of professional equipment and improving the convenience of operation and maintenance. The present application also directly obtains the circulating water volume through the pressure gauge reading, significantly improving the response speed and obtaining a real-time response. The embodiment of the present application achieves low-cost real-time monitoring of the circulating water volume by coordinating the pressure gauge with the ultrasonic flow meter.

[0056] The present application also discloses a circulating water flow monitoring system for an indirect air cooling tower, which includes a pressure gauge installation module 210 , a flow meter installation module 220 , a data measurement and control module 230 , a relationship simulation module 240 , and a real-time acquisition module 250 .

[0057] The pressure gauge installation module 210 is used to install a pressure gauge on the outlet main pipe of the circulating water pump.

[0058] The flow meter installation module 220 is used to install an ultrasonic flow meter at a target position of the main pipe with reference to the main pipe diameter of the main pipe.

[0059] The data measurement and control module 230 is used to adjust the operation mode of the circulating water pump and synchronously record the pressure gauge reading and ultrasonic flow meter data.

[0060] The relationship simulation module 240 is used to draw a relationship curve between the main pipe pressure and flow rate based on the pressure gauge reading and the ultrasonic flow meter data.

[0061] The real-time acquisition module 250 is used to query the relationship curve based on the current pressure gauge reading to obtain the real-time circulating water volume.

[0062] An embodiment of the present application also discloses a circulating water volume monitoring device for an indirect air-cooling tower, which is used to implement the above-mentioned circulating water volume monitoring method for an indirect air-cooling tower, including a pressure gauge arranged on the outlet main pipe of the circulating water pump, an ultrasonic flow meter detachably installed at the target position of the main pipe, and a database or storage module storing a curve of the relationship between the main pipe pressure and flow.

[0063] In some embodiments, the ultrasonic flow meter is a temporarily installed component and is removed after the main pipe pressure and flow relationship curve is established.

[0064] The embodiment of the present application further discloses a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned method for monitoring the circulating water volume of an indirect air-cooling tower when the program is executed by a processor.

[0065] The circulating water volume monitoring method of the indirect air-cooling tower in the embodiment of the present application can define data collection, relationship curve generation and flow inversion rules, and the execution process is controlled by the circulating water volume monitoring system of the indirect air-cooling tower; the circulating water volume monitoring system of the indirect air-cooling tower collects signals through the pressure sensing unit deployed on the circulating water volume monitoring device of the indirect air-cooling tower, and calls the relationship curve in the storage medium to realize flow mapping; the circulating water volume monitoring device of the indirect air-cooling tower serves as a hardware carrier, carrying the system's pressure sensing module and generating raw data; the readable storage medium stores the pressure and flow relationship curve generated by the system, providing continuous query data support for the device.

[0066] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present application, and the present application is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present application, and such modifications and improvements are also considered to be within the scope of protection of the present application.

Claims

1. A method for monitoring the circulating water volume of an indirect air cooling tower, characterized in that: include: Install a pressure gauge on the outlet main pipe of the circulating water pump; With reference to the diameter of the main pipe, an ultrasonic flow meter is installed at a target position of the main pipe; Adjust the operating mode of the circulating water pump and simultaneously record the pressure gauge reading and ultrasonic flow meter data; Draw a main pipe pressure and flow relationship curve based on the pressure gauge reading and the ultrasonic flowmeter data; The relationship curve is queried based on the current pressure gauge reading to obtain the real-time circulating water volume.

2. The method according to claim 1, characterized in that The pressure gauge is connected through the opening of the main pipe, and the measurement accuracy of the pressure gauge is ±0.01kPa.

3. The method according to claim 1, characterized in that The target position of the main pipe includes an upstream pipe section position and a downstream pipe section position. The installing of the ultrasonic flowmeter at the target position of the main pipe with reference to the main pipe diameter of the main pipe includes: The ultrasonic flowmeter is installed at a position of the upstream pipe section that is not less than ten times the diameter of the main pipe; and / or The ultrasonic flowmeter is installed at a position of the downstream pipe section that is not less than five times the diameter of the main pipe.

4. The method according to claim 1, wherein The operation mode of adjusting the circulating water pump includes: Start and stop different water pump combinations or adjust the water pump speed.

5. The method according to claim 1, wherein Drawing a main pipe pressure and flow relationship curve based on the pressure gauge reading and the ultrasonic flowmeter data includes: Based on the operating conditions of multiple groups of different water pumps, the pressure and flow data points are fitted according to the pressure gauge readings and the ultrasonic flow meter data to generate the main pipe pressure and flow relationship curve.

6. The method according to claim 1, characterized in that After querying the relationship curve based on the current pressure gauge reading, the method includes: Remove the ultrasonic flow meter to control costs and ensure convenient operation and maintenance.

7. A circulating water volume monitoring system for an indirect air cooling tower, characterized in that: include: Pressure gauge installation module, used to install the pressure gauge on the circulating water pump outlet main pipe; a flow meter installation module, for installing an ultrasonic flow meter at a target position of the main pipe with reference to the main pipe diameter of the main pipe; A data measurement and control module is used to adjust the operation mode of the circulating water pump and synchronously record the pressure gauge reading and ultrasonic flow meter data; A relationship simulation module, used for drawing a main pipe pressure and flow relationship curve based on the pressure gauge reading and the ultrasonic flow meter data; The real-time acquisition module is used to query the relationship curve based on the current pressure gauge reading to obtain the real-time circulating water volume.

8. A circulating water flow monitoring device for an indirect air cooling tower, used to implement the method according to any one of claims 1 to 6, characterized in that: include: Pressure gauge installed on the outlet main pipe of the circulating water pump; an ultrasonic flow meter detachably mounted at a target position of the mother pipe; A database or storage module storing a main pipe pressure and flow relationship curve.

9. The device according to claim 8, characterized in that The ultrasonic flowmeter is a temporarily installed component and is removed after the main pipe pressure and flow relationship curve is established.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the circulating water volume monitoring method of the indirect air cooling tower according to any one of claims 1 to 6 is implemented.

Images