A wireless transmission control system for the running state of a submersible pump

Abstract

This application discloses a wireless transmission control system for the operating status of a submersible pump, relating to the field of submersible pump technology. It includes a submersible pump unit body, a data acquisition box connected to the submersible pump unit body, and a submersible pump unit control unit communicatively connected to the data acquisition box. The submersible pump unit control unit is equipped with a data receiving box for receiving data information from the data acquisition box, and the data acquisition box is equipped with a preset controller and a wireless gateway for communicatively connecting to the submersible pump unit control unit. This application saves on the need for numerous data acquisition cabinets in traditional submersible pump computer monitoring rooms and complex programming in DCS systems by using a preset controller and wireless gateway in the data acquisition box. Furthermore, by acquiring sensor signal data from the submersible pump unit body itself, it solves the signal interference problem of the traditional pump body signal cable route directly from the pump body to the control system, achieving stable signal transmission and convenient control.

Description

Technical Field

[0001] This application relates to the field of submersible pump technology, and in particular to a wireless transmission control system for the operating status of a submersible pump. Background Technology

[0002] With the rapid development of large submersible pumps, especially submersible shaft / mixed flow pumps and axial flow pumps whose maximum power rating can reach over 2000KW, the monitoring signals of their built-in sensors are becoming increasingly complex. Since the motor and pump of a submersible pump are integrated and submerged in water for a long time, there are many types and numbers of internal sensors, including PT100 RTD or thermocouple signals for motor windings, upper, middle and lower bearings and gearbox oil temperature, humidity sensor signals inside the motor, vibration sensor signals for the motor and shaft in the X / Y / Z directions, oil level and oil pressure sensor signals for the gearbox, and leakage electrode sensor signals for the motor cavity, junction box and oil chamber, etc.

[0003] In existing technologies, signal input and output typically require multiple complex analog instruments and relay circuits. Even with specific pump protectors, multiple dedicated pump controllers from different manufacturers are needed. This results in complex signal and protection circuit designs, inconsistent interface types, fragmented signal displays, poor selectivity, and limited acceptance of complex parameter and display conversion procedures by maintenance units due to their limited professional capabilities.

[0004] Currently, while there are many types of pump protectors on the market, such as those from professional manufacturers like Nanjing Kelan and Kangzhuo, the number of signals a single controller can receive is limited, typically a maximum of 5 PT100 signals and 3 leakage signals, resulting in overly simplistic signal types. Furthermore, because pump protectors are often installed on pump starter cabinets, which are too far from the pump unit itself, the wiring is frequently exposed to high-voltage environments. Due to varying installation standards, signal and power cables are often laid in the same cable trench. Although some protectors have Modbus RS485 interfaces, their anti-interference capabilities are poor under high-voltage conditions, resulting in large signal fluctuations and frequent sudden signal changes. This leads to unit tripping and the inability to detect fault signals. Meanwhile, although centralized computer monitoring systems can be implemented through industrial control computers, numerous data acquisition units, and data processing modules, the system circuit design is complex, construction and installation are time-consuming and labor-intensive, and the cost is high. It also has strict requirements on site and cable laying, which is not conducive to acceptance and promotion by general customers. At the same time, the cable laid between the water pump unit and the data acquisition unit is also easily affected by the parallel power line due to the long distance, which in turn affects the use and development of submersible pumps and needs to be improved. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a wireless transmission control system for the operating status of a submersible pump, so as to achieve stable signal transmission and convenient control. The specific solution is as follows:

[0006] A wireless transmission control system for the operating status of a submersible pump includes a submersible pump unit body, a data acquisition box connected to the submersible pump unit body, and a submersible pump unit control unit communicatively connected to the data acquisition box. The submersible pump unit control unit is equipped with a data receiving box for receiving data information from the data acquisition box, and the data acquisition box is equipped with a preset controller and a wireless gateway for communicatively connecting to the submersible pump unit control unit.

[0007] Preferably, the preset controller and wireless gateway include a GPRS communication connection with the data receiving box, and the data receiving box includes a GPRS communication connection with the preset controller and wireless gateway.

[0008] Preferably, it also includes a cloud server, and the preset controller, wireless gateway and data receiving box are all connected to the cloud server via GPRS.

[0009] Preferably, the preset controller and wireless gateway include a wireless gateway and a programmable controller. The programmable controller is used to receive signals in analog and digital form through pluggable terminals, and is used to select the corresponding sensor type, perform digital-to-digital conversion from the sensor to the controller, determine logical faults in the magnitude of the digital signal, and transmit communication signals.

[0010] Preferably, the gateway communication protocol of the wireless gateway is Modbus RS485 or Ethernet.

[0011] Preferably, the data acquisition box includes a junction box, which is provided with sensor cables for connecting to the submersible pump unit body; the submersible pump unit body is provided with multiple sensors and is respectively connected to the corresponding sensor cables.

[0012] Preferably, the data receiving box is a dedicated data receiving box for submersible pumps.

[0013] Preferably, the submersible pump dedicated data receiver box is used to select and output different signals on the human-machine interface inside the submersible pump dedicated data receiver box according to the sensor installation location and type, and the signals include comprehensive fault output, temperature sensor comprehensive alarm output, and leakage electrode model comprehensive fault output.

[0014] Preferably, the data acquisition box includes a perforated housing that is fixedly connected to the submersible pump unit body and a data acquisition device located inside the perforated housing; the data acquisition device is fixed inside the data acquisition device, and the perforated housing is used to keep the data acquisition device located at the bottom of the data acquisition device.

[0015] Preferably, the perforated housing has an arc-shaped connecting arm on its inner side, the collector is spherical or cylindrical and has a rotating insertion ring groove on one side of its outer circumference, one end of the arc-shaped connecting arm is inserted into the rotating insertion ring groove for rotatable connection and contacts the outer wall of the collector; a partial vacuum collection cavity is formed inside the collector.

[0016] As can be seen from the above solutions, this application provides a wireless transmission and control system for the operating status of a submersible pump, which has the following beneficial effects:

[0017] 1. By setting up the preset controller and wireless gateway in the data acquisition box, the traditional submersible pump computer monitoring room has a large number of data acquisition cabinets and complex program writing in the DCS system. The sensor signal data in the submersible pump unit can be received by manually selecting the corresponding variable register address and communication protocol through the human-machine interface of the submersible pump dedicated data receiving box, thereby significantly reducing material costs and manpower.

[0018] 2. By using sensor signal data collected from the source of the submersible pump unit, the signal interference problem of the signal cable from the pump body directly to the control system in the traditional solution is solved. This effectively avoids the signal from being interrupted by line faults or strong electrical interference in the traditional submersible pump control system, which affects the safety control and signal perception and collection of the submersible pump unit.

[0019] 3. Data is transmitted to the cloud server via the GPRS general packet wireless transmission technology of the programmable controller's wireless gateway, and then the signal is received by the data receiving box on the side of the submersible pump unit control unit cabinet, thus avoiding a large amount of material and labor costs such as extensive wiring and cabling between the submersible pump unit body and the submersible pump unit control unit.

[0020] 4. Liquid is allowed to enter the perforated housing through the perforated housing. The arc-shaped connecting arm rotates to connect the data collector. When the position of the submersible pump unit changes, the local vacuum in the collection cavity and the data collection device at one end work together to drive the data collector to rotate in an orderly manner and keep the data collection device at the bottom of the data collector, so that the data collection box maintains a stable connection and communication with the cloud server. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the submersible pump operation status wireless transmission control system disclosed in this application;

[0023] Figure 2 This is a schematic diagram of the connection structure between the submersible pump unit body and the data acquisition box disclosed in this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Submersible pump unit body; 2. Data acquisition box; 21. Perforated housing; 22. Arc-shaped connecting arm; 23. Data acquisition device; 231. Rotating insertion ring groove; 232. Data acquisition cavity. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] like Figure 1 As shown, a wireless transmission control system for the operating status of a submersible pump includes a submersible pump unit and a cloud server. The submersible pump unit is connected to a data acquisition box, which is communicatively connected to a submersible pump unit control unit. The submersible pump unit control unit is equipped with a data receiving box for receiving data from the data acquisition box, and the data acquisition box is equipped with a preset controller and a wireless gateway for communicatively connecting with the submersible pump unit control unit.

[0027] It should be noted that the preset controller and wireless gateway include a GPRS communication connection with the data receiving box, and the data receiving box also includes a GPRS communication connection with the preset controller and wireless gateway. Both the preset controller and wireless gateway, and the data receiving box, use GPRS to communicate with the cloud server. Simultaneously, the preset controller and wireless gateway include a wireless gateway and a programmable controller (PLC). The PLC is used to receive signals in analog and digital form via pluggable terminals, and is used for selecting the appropriate sensor type, converting sensor signals to digital signals within the controller, determining logical faults based on digital signal magnitude, and transmitting communication signals.

[0028] It should be mentioned that the gateway communication protocol of the wireless gateway is Modbus RS485 or Ethernet.

[0029] like Figure 1As shown, the data acquisition box includes a junction box, and the junction box is equipped with sensor cables for connecting to the submersible pump unit body. The submersible pump unit body is equipped with multiple sensors to generate corresponding signal data. When the multiple sensors are connected to their respective sensor cables, the signal data is transmitted to the data acquisition box through the corresponding sensor cables.

[0030] Of course, the data receiving box in this application is a dedicated data receiving box for submersible pumps, so that it is suitable for establishing a stable connection and data transmission with the submersible pump unit. Specifically, the dedicated data receiving box for submersible pumps is used to select and output different signals on the human-machine interface inside the box according to the sensor's installation location and type, and the signals include comprehensive fault output, comprehensive alarm output of temperature sensor, and comprehensive fault output of leakage electrode model.

[0031] like Figure 2 As shown, the data acquisition box 2 includes a perforated housing 21 fixedly connected to the submersible pump unit body 1 and a data acquisition device 23 located within the perforated housing 21. A data acquisition device is fixed within the data acquisition device 23 to acquire signal data from multiple sensors within the submersible pump unit body 1 and transmit the corresponding signal data to a dedicated submersible pump data receiving box. It should be noted that the perforated housing 21 is used to keep the data acquisition device located at the lowest end of the data acquisition device 23.

[0032] Specifically, an arc-shaped connecting arm 22 is provided on the inner side of the perforated housing 21. Correspondingly, the collector 23 is spherical or cylindrical and has a rotating insertion groove 231 on one side of its outer circumference. One end of the arc-shaped connecting arm 22 is inserted into the rotating insertion groove 231 for rotational connection and contacts the outer wall of the collector 23, so that the axis of the rotating insertion groove 231 of the collector 23 maintains a stable distance relative to the arc-shaped connecting arm 22 and rotates relative to it. At the same time, a partial vacuum collection cavity 232 is formed inside the collector 23. Therefore, the data acquisition box 2 allows liquid to enter the perforated housing 21 through the perforated housing 21, and then rotates to connect the collector 23 through the arc-shaped connecting arm 22. This allows the partial vacuum in the collection cavity 232 to work in concert with the collection device at one end to drive the collector 23 to rotate in an orderly manner when the position of the submersible pump unit body 1 changes, keeping the collection device at the bottom of the collector 23, thereby ensuring a stable connection and communication between the data acquisition box 2 and the cloud server.

[0033] In summary, this application provides a wireless transmission control system for the operating status of a submersible pump. This system eliminates the need for numerous data acquisition cabinets in traditional submersible pump computer monitoring rooms and complex programming in DCS systems by using a preset controller and wireless gateway in the data acquisition box. Furthermore, it allows manual selection of the corresponding variable register address and communication protocol via a dedicated data receiver box and its corresponding human-machine interface to receive sensor signal data from within the submersible pump unit, significantly reducing material costs and labor requirements. Simultaneously, by acquiring sensor signal data from the submersible pump unit itself, it avoids the problem of the traditional solution where the pump signal cable runs directly from the pump body to the controller. This system addresses signal interference issues in the control system's routing, effectively preventing signal interruptions or strong electrical interference from affecting the submersible pump unit's safety control and signal sensing and collection, as is common in traditional submersible pump control systems. Specifically, when setting up a cloud server, data is transmitted to the cloud server via the programmable controller's wireless gateway using GPRS (General Packet Radio Service). The signal is then received by a data receiving box on the submersible pump unit's control unit cabinet. This avoids the significant material and labor costs associated with extensive wiring and cabling between the submersible pump unit and its control unit, ensuring stable signal transmission and convenient control.

[0034] The terms “first,” “second,” “third,” “fourth,” etc., used in this application (if applicable) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, or apparatus that includes a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, or apparatus.

[0035] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0036] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A signal transmission and control system for a submersible pump, comprising a submersible pump unit body, characterized in that: The submersible pump unit body is connected to a data acquisition box, which is communicatively connected to the submersible pump unit control unit. The submersible pump unit control unit is equipped with a data receiving box for receiving data from the data acquisition box. The data acquisition box is equipped with a preset controller and a wireless gateway for communicatively connecting to the submersible pump unit control unit. The data acquisition box includes a perforated housing fixed to the submersible pump unit body and a collector located within the perforated housing. A data acquisition device is fixed inside the collector, and the perforated housing is used to keep the data acquisition device at its lowest point. An arc-shaped connecting arm is provided on the inner side of the perforated housing. The collector is spherical or cylindrical and has a rotating insertion groove on one side of its outer circumference. One end of the arc-shaped connecting arm is inserted into the rotating insertion groove for rotatable connection and contacts the outer wall of the collector. A partial vacuum acquisition cavity is formed inside the collector.

2. The signal transmission and control system for a submersible pump according to claim 1, characterized in that: The preset controller and wireless gateway include a GPRS communication connection with the data receiving box, and the data receiving box includes a GPRS communication connection with the preset controller and wireless gateway.

3. The signal transmission and control system for a submersible pump according to claim 2, characterized in that: It also includes a cloud server, and the preset controller, wireless gateway and data receiving box are all connected to the cloud server via GPRS.

4. The signal transmission and control system for a submersible pump according to claim 2, characterized in that: The preset controller and wireless gateway include a wireless gateway and a programmable controller. The programmable controller is used to receive signals in analog and digital form through pluggable terminals, and is used to select the corresponding sensor type, convert the sensor to digital quantity in the controller, judge the logic fault of the digital quantity magnitude, and transmit communication.

5. A signal transmission and control system for a submersible pump according to claim 1, characterized in that: The gateway communication protocol of the wireless gateway is Modbus RS485 or Ethernet.

6. The signal transmission and control system for a submersible pump according to claim 1, characterized in that: The data acquisition box includes a junction box, which is provided with sensor cables for connecting to the submersible pump unit body; the submersible pump unit body is provided with multiple sensors and is respectively connected to the corresponding sensor cables.

7. The signal transmission and control system for a submersible pump according to claim 1, characterized in that: The data receiving box is a dedicated data receiving box for submersible pumps.

8. The signal transmission and control system for a submersible pump according to claim 7, characterized in that: The dedicated data receiver box for submersible pumps is used to select and output different signals on the human-machine interface inside the dedicated data receiver box according to the sensor installation location and type. The signals include comprehensive fault output, comprehensive alarm output of temperature sensor, and comprehensive fault output of leakage electrode model.

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