Technical water supply booster pump temperature monitoring and control device

Abstract

The utility model provides a temperature monitoring and control device for a technical water supply booster pump, relates to the technical water supply field of hydropower stations, and solves the problems of hysteresis and contingency of the conventional technical water supply booster pump due to a manual inspection temperature measurement mode. The device comprises multi-type temperature sensing assemblies and a technical water supply PLC system, the multi-type temperature sensing assemblies are in communication connection with the technical water supply PLC system, and the multi-type temperature sensing assemblies are installed at a bearing and a motor of a technical water supply booster pump respectively; wherein the multi-type temperature sensing assembly comprises a metal resistance type temperature sensor arranged on a heat dissipation fin of the motor, a patch type temperature sensor arranged on the end face of the motor and an infrared temperature sensor arranged at a bearing; the device further comprises an axial flow fan in communication connection with the technical water supply PLC system. The device can effectively prevent overheating damage of equipment, ensures continuous and stable operation of the hydropower station, and reduces investment of human resources.

Description

Technical Field

[0001] The utility model relates to the field of technical water supply of hydropower stations, in particular to a temperature monitoring and control device for a technical water supply booster pump. Background Art

[0002] In the operation and maintenance of modern large-scale hydropower stations, the technical water supply system plays an extremely critical role, especially the booster pump, whose main responsibility is to ensure the continuous and stable supply of cooling water to core equipment such as generators and main transformers, so as to effectively dissipate the large amount of heat generated during the operation of these equipment. The circulation of cooling water is crucial to maintaining the temperature of the equipment within the safe operating range, avoiding equipment failures caused by overheating and even unplanned shutdowns of the entire unit, which is directly related to the stability and safety of power supply.

[0003] However, the existing technology for monitoring and maintaining water supply booster pumps has obvious deficiencies. Although it is a traditional practice to manually monitor the temperature on site and take measures accordingly, this method is heavily dependent on manual intervention. Not only is the response speed slow, but the monitoring frequency and accuracy are limited, making it difficult to capture subtle changes in the status of the booster pump in real time. Specifically, manual temperature measurement has the following problems:

[0004] 1. Lag: Manual inspection is usually carried out at set time intervals and cannot achieve real-time monitoring. Once the temperature of the booster pump rises rapidly, it may exceed the safety threshold before the next inspection, causing damage to the equipment.

[0005] 2. Randomness: It relies on manual judgment and operation and is easily affected by human factors, such as negligence and misjudgment, which may lead to missing the best time for processing.

[0006] 3. Resource intensive: Long-term manual inspections consume a lot of human resources, increasing operating costs. In remote or underground factory environments, it is inconvenient for personnel to enter and exit, further exacerbating management difficulties.

[0007] In addition, with the transformation of hydropower stations towards automation and intelligence, the traditional maintenance model has become a major bottleneck restricting its development, especially in underground powerhouses that implement unmanned mode. The traditional manual monitoring method can no longer meet the needs of efficient and safe operation.

[0008] Therefore, it is particularly urgent to develop an intelligent monitoring system that can monitor the operating status of the technical water supply booster pump in real time, especially its temperature changes, and can automatically adjust or warn. Utility Model Content

[0009] Based on the current status of the background technology, the purpose of the utility model is to solve the lag and contingency problems of the existing technical water supply booster pump due to the manual patrol temperature detection method, and therefore proposes a technical water supply booster pump temperature monitoring and control device; the device integrates multiple types of temperature sensor components, supporting PLC technology and uses axial flow fans as controlled actuators, so that the technical water supply booster pump has intelligent and information capabilities; the utility model can effectively prevent overheating damage to the equipment, ensure the continuous and stable operation of the hydropower station, while reducing the investment in human resources, and promoting the modernization and upgrading of the operation and maintenance model of the hydropower station.

[0010] The utility model adopts the following technical solutions to achieve the purpose:

[0011] A temperature monitoring and control device for a technical water supply booster pump, the device comprising multiple types of temperature sensing components and a technical water supply PLC system, the multiple types of temperature sensing components being communicatively connected with the technical water supply PLC system; the multiple types of temperature sensing components being respectively installed at the bearings and the motor of the technical water supply booster pump.

[0012] Preferably, the bearing and the rotating shaft of the motor are arranged along the same central axis, and the rotating shaft of the motor drives the bearing to rotate; the outer surface of the motor is also covered with heat dissipation fins.

[0013] Preferably, multiple types of temperature sensor components are respectively installed in the heat dissipation fins coated on the motor and on the end face of the motor; the end face of the motor is the surface of the motor close to and facing the bearing side.

[0014] Specifically, the multi-type temperature sensing components include several metal resistance temperature sensors and several chip temperature sensors; the metal resistance temperature sensors are installed in the heat dissipation fins covered on the motor, and the chip temperature sensors are installed on the end face of the motor; the metal resistance temperature sensors and the chip temperature sensors are both communicatively connected to the technical water supply PLC system.

[0015] Preferably, the cross-sectional shape of the end face of the motor is circular, and the number of the chip temperature sensors is 4; the 4 chip temperature sensors are installed on the circular end face of the motor at even intervals, and the installation positions are arranged around the rotating shaft of the motor.

[0016] Specifically, a mounting hole is opened on the heat sink fin, the metal resistance temperature sensor is installed in the mounting hole, and the probe of the metal resistance temperature sensor is in contact with the outer surface of the motor; the patch temperature sensor is fixed to the end surface of the motor by screws.

[0017] Preferably, triangular brackets are fixedly connected to the upper and lower parts of the shell of the technical water supply booster pump, and the triangular brackets extend to the upper and lower parts of the bearing respectively.

[0018] Specifically, the multi-type temperature sensing component includes an infrared temperature sensor, which is installed on a tripod bracket and located at an extended position of the tripod bracket above and below the bearing; the detection end of the infrared temperature sensor faces the bearing, and the infrared temperature sensor is communicatively connected to the technical water supply PLC system.

[0019] Preferably, the device also includes an axial flow fan, and the technical water supply PLC system is communicatively connected to the axial flow fan.

[0020] Preferably, the technical water supply PLC system includes a display screen and a control component; the display screen is used to display temperature sensor data of multiple types of temperature sensor components and operating data of the axial flow fan, and the control component is used to realize human-computer interaction of the device.

[0021] In summary, due to the adoption of this technical solution, the beneficial effects of the utility model are as follows:

[0022] The utility model realizes the real-time collection and accurate measurement of temperature data by deploying effective temperature sensors at the matching motor and key bearing positions of the technical water supply booster pump. The device can not only collect and display the current temperature status in real time, but also conduct parameter warnings and take control measures in a preset manner, effectively avoiding equipment damage caused by abnormal temperature and ensuring safe operation.

[0023] The addition of axial flow fans in the device ensures forced cooling of components such as bearings and motors, effectively suppressing the temperature rise. It not only reduces the risk of equipment shutdown due to overheating, but also optimizes the operating temperature range, thereby improving the overall operating efficiency of the technical water supply booster pump and the service life of the supporting motor, reducing energy consumption and maintenance costs.

[0024] The temperature sensor itself has a minimalist wiring design and compact size, which makes it easy to quickly deploy and fix in complex environments. In addition, its low-cost wiring solution and effective temperature measurement performance can greatly reduce the implementation and maintenance costs of the device and technical water supply system, and improve its economy and practicality.

[0025] Compared with the traditional reliance on manual regular inspections, the introduction of this utility model device releases human resources, reduces manual dependence, and can improve work efficiency and operation and maintenance accuracy with the assistance of intelligent automatic control. Especially in the unmanned underground plant environment, this device has become a key technical support to ensure the stable operation of the technical water supply system and improve the overall automation level of the hydropower station, providing a reliable guarantee for the realization of unmanned and intelligent operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the device of the utility model;

[0027] Figure 2 It is a schematic diagram of the position of the patch temperature sensor in the utility model;

[0028] Figure 3 This is a schematic diagram of the connection relationship of the technical water supply PLC system in the utility model.

[0029] The meanings of the symbols in the accompanying drawings are as follows:

[0030] 1-Metal resistance temperature sensor, 2-SMD temperature sensor, 3-Infrared temperature sensor, 4-Triangular bracket, 5-Electric motor, 6-Bearing, 7-Technical water supply booster pump. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figure 1 , Figure 3 As shown, a temperature monitoring and control device for a technical water supply booster pump includes multiple types of temperature sensing components and a technical water supply PLC system. The multiple types of temperature sensing components are communicatively connected with the technical water supply PLC system. The multiple types of temperature sensing components are respectively installed at the bearing 6 and the motor 5 of the technical water supply booster pump 7.

[0035] The technical water supply booster pump 7 involved in this embodiment has a matching motor 5 and a bearing 6 connected thereto; the specific arrangement is preferably: the bearing 6 and the rotating shaft of the motor 5 are arranged along the same central axis, and the rotating shaft of the motor 5 drives the bearing 6 to rotate.

[0036] In this embodiment, multiple types of temperature sensor components are respectively installed in the heat dissipation fins covering the motor 5 and on the end surface of the motor 5; the end surface of the motor 5 is the surface of the motor 5 close to and facing the bearing 6.

[0037] In the above device structure design, the purpose of installing multiple types of temperature sensing components at bearing 6 is that the bearing is a key component that bears mechanical loads and allows parts to rotate relative to each other, and is prone to heat due to friction. The sensors installed here are mainly used to monitor the operating temperature of the bearing and detect overheating in time, because overheating is often an early sign of insufficient lubrication, bearing damage or excessive load. Therefore, by monitoring the bearing temperature in real time, sudden downtime caused by bearing failure can be prevented, equipment life can be extended, and maintenance costs can be reduced.

[0038] In the above-mentioned device structure design, the purpose of installing multiple types of temperature sensor components in the heat sink fins covering the motor 5 is that the motor 5 generates a lot of heat during operation, and the heat sink fins are designed to increase its surface area and promote air circulation, thereby accelerating heat dissipation. The sensor installed here can monitor the thermal load and heat dissipation efficiency of the motor. Directly monitoring the temperature at the heat sink fins can help the control system adjust the working state of the motor 5, such as preventing overheating by adjusting the speed or adding cooling measures, and protecting the motor from thermal damage.

[0039] In the above-mentioned device structure design, the purpose of installing multiple types of temperature sensing components at the end face of the motor 5 is that the sensors at this position can capture the local high temperature generated by electromagnetic effects, friction or other transmission losses when the motor 5 is running, especially the heat that may affect the bearing 6 or nearby key parts. This helps to evaluate the overall uniformity of the working state of the motor 5 and the heat transfer effect in the interface area between the motor 5 and the bearing 6, and is particularly useful for diagnosing atypical heat sources or abnormal heat flow distribution.

[0040] This embodiment ensures comprehensive monitoring of the temperature of the core components of the technical water supply booster pump 7 through the distribution strategy of multiple types of temperature sensor components. At the same time, with the integration of the technical water supply PLC system, the conventional program control logic in this field can be used to realize real-time collection and analysis of temperature data, thereby automatically adjusting or issuing external alarms, thereby ensuring the safe and efficient operation of the equipment in the hydropower station.

[0041] Example 2

[0042] Based on Example 1, this example introduces in detail the specific situation of the multi-type temperature sensor assembly. In this example, the multi-type temperature sensor assembly may include a plurality of metal resistance temperature sensors 1, a plurality of patch temperature sensors 2 and a plurality of infrared temperature sensors 3. Among them:

[0043] The metal resistance temperature sensor 1 is installed in the heat sink fins covered on the motor 5, and the patch temperature sensor 2 is installed on the end face of the motor 5; the metal resistance temperature sensor 1 and the patch temperature sensor 2 are both connected to the technical water supply PLC system for communication.

[0044] The metal resistance temperature sensor 1 is a temperature measurement device based on the property that the resistivity of metal materials changes with temperature. Its application is reliable, stable and accurate. The patch temperature sensor 2 is a sensor designed to measure the surface temperature of an object. They are characterized by small size, easy installation, and can fit tightly on the surface of the object to be measured, providing more accurate surface temperature measurement; because of the large contact area and close contact with the object to be measured, it has obvious advantages when measuring the end face of the motor 5.

[0045] In this embodiment, Figure 2 As shown, the cross-sectional shape of the end face of the preferred motor 5 is circular, and the number of the chip temperature sensors 2 is 4; the 4 chip temperature sensors 2 are installed on the circular end face of the motor 5 at even intervals, and the installation positions are arranged around the rotating shaft of the motor 5, so as to achieve full measurement of the end face temperature of the motor 5.

[0046] The specific installation method of these two types of sensors can be as follows: a mounting hole is opened on the heat dissipation fin, the metal resistance temperature sensor 1 is installed in the mounting hole, and the probe of the metal resistance temperature sensor 1 is in contact with the outer surface of the motor 5; the patch temperature sensor 2 is fixed to the end face of the motor 5 by screws.

[0047] As for the infrared temperature sensor 3, its installation structure is as follows: the upper and lower parts of the housing of the technical water supply booster pump 7 are fixedly connected with a triangular bracket 4, and the triangular bracket 4 extends to the upper and lower parts of the bearing 6 respectively. The infrared temperature sensor 3 is installed on the triangular bracket 4 and is located at the extended position of the triangular bracket 4 above and below the bearing 6; the detection head of the infrared temperature sensor 3 faces the bearing 6, and the infrared temperature sensor 3 is connected to the technical water supply PLC system for communication.

[0048] The infrared temperature sensor 3 is a non-contact temperature measuring device, which uses the infrared radiation energy emitted by an object to determine the surface temperature of the object. Therefore, it is very suitable for the high-speed rotation scene of the bearing 6 when the water supply booster pump 7 in this embodiment is running. In this embodiment, it is recommended that the infrared temperature sensor 3 be about 30 cm away from the bearing 6 with the assistance of the tripod bracket 4, which is a more appropriate distance.

[0049] Example 3

[0050] Based on Example 1 or Example 2, this embodiment further improves the temperature monitoring and control device for the technical water supply booster pump. Figure 3 As shown, the device also includes an axial flow fan, and the technical water supply PLC system is communicatively connected with the axial flow fan.

[0051] After the temperature sensing data collected by the multi-type temperature sensing components are sent to the technical water supply PLC system, the preset logic program in the technical water supply PLC system can be used. For example, when the temperature of the motor 5 or the bearing 6 is higher than a threshold, the axial flow fan is started to reduce the corresponding temperature; when the temperature is lower than another threshold, the axial flow fan is stopped, thereby achieving the purpose of regulating the temperature of the technical water supply booster pump 7. The preset logic programs in the technical water supply PLC system are all mature technologies in this field, and their parameter settings can be selected according to the actual model requirements, which will not be repeated here.

[0052] In this embodiment, it is recommended to place the axial flow fan within 1.5 meters from the technical water supply booster pump 7 to achieve a better cooling effect.

[0053] In this embodiment, the technical water supply PLC system includes a display screen and a control component; the display screen is used to display the temperature sensor data of multiple types of temperature sensor components and the operating data of the axial flow fan, and the control component is used to realize the human-computer interaction of the device. Through this design, the technical water supply PLC system can effectively realize operations such as temperature display, threshold setting, and axial flow fan start and stop control; at the same time, according to the model parameters of the existing axial flow fan, the corresponding functional operation content, such as the size of the air intake, is configured. The program logic and other related technologies used in this design are also existing mature technologies and will not be repeated here.

[0054] In summary, the utility model provides a solution for the safe and efficient operation of the technical water supply system of the hydropower station by virtue of its effective temperature detection capability, convenient installation and maintenance characteristics, efficiency improvement effect, and automation and intelligence level, bringing practical technological progress and social and economic benefits.

Claims

1. A temperature monitoring and control device for a water supply booster pump, characterized in that: The device comprises a multi-type temperature sensing assembly and a technical water supply PLC system, wherein the multi-type temperature sensing assembly is communicatively connected with the technical water supply PLC system; the multi-type temperature sensing assembly is respectively installed at a bearing (6) and a motor (5) of a technical water supply booster pump (7); the bearing (6) and the rotating shaft of the motor (5) are arranged along the same central axis, and the rotating shaft of the motor (5) drives the bearing (6) to rotate; and the outer surface of the motor (5) is also covered with heat dissipation fins; The multiple types of temperature sensing components are respectively installed in the heat dissipation fins covering the motor (5) and on the end surface of the motor (5); the end surface of the motor (5) is the surface of the motor (5) close to and facing the bearing (6).

2. The temperature monitoring and control device for a technical water supply booster pump according to claim 1 is characterized in that: The multi-type temperature sensing component comprises a plurality of metal resistance temperature sensors (1) and a plurality of patch temperature sensors (2); the metal resistance temperature sensors (1) are installed in the heat dissipation fins coated on the motor (5), and the patch temperature sensors (2) are installed on the end surface of the motor (5); the metal resistance temperature sensors (1) and the patch temperature sensors (2) are both connected to the technical water supply PLC system for communication.

3. The temperature monitoring and control device for a technical water supply booster pump according to claim 2 is characterized in that: The cross-sectional shape of the end face of the motor (5) is circular, and the number of the patch-type temperature sensors (2) is four; the four patch-type temperature sensors (2) are installed on the circular end face of the motor (5) at even intervals, and the installation positions are arranged around the rotating shaft of the motor (5).

4. The temperature monitoring and control device for a technical water supply booster pump according to claim 2 is characterized in that: A mounting hole is provided on the heat dissipation fin, and a metal resistance temperature sensor (1) is mounted in the mounting hole, and a probe of the metal resistance temperature sensor (1) is in contact with the outer surface of the motor (5); the patch temperature sensor (2) is fixed to the end surface of the motor (5) by means of screws.

5. The temperature monitoring and control device for a technical water supply booster pump according to claim 1 is characterized in that: A triangular bracket (4) is fixedly connected to the upper and lower parts of the shell of the technical water supply booster pump (7), and the triangular bracket (4) extends to the upper and lower parts of the bearing (6) respectively.

6. The temperature monitoring and control device for a technical water supply booster pump according to claim 5 is characterized in that: The multi-type temperature sensing component comprises an infrared temperature sensor (3), which is mounted on a triangular bracket (4) and located at an extended position of the triangular bracket (4) above and below a bearing (6); a detection head of the infrared temperature sensor (3) faces the bearing (6), and the infrared temperature sensor (3) is communicatively connected to a technical water supply PLC system.

7. The temperature monitoring and control device for a technical water supply booster pump according to claim 1 is characterized in that: The device also includes an axial flow fan, and the technical water supply PLC system is communicatively connected with the axial flow fan.

8. The temperature monitoring and control device for a technical water supply booster pump according to claim 7 is characterized in that: Technical water supply PLC system includes display screen and control components; The display screen is used to display the temperature sensing data of various types of temperature sensing components and the operation data of the axial flow fan, and the control component is used to realize the human-computer interaction of the device.

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