Spraying water pressure automatic adjusting method and device

Abstract

The invention belongs to the technical field of dust treatment, relates to an automatic spray water pressure adjusting method and device, and aims to solve the problems that water pressure adjustment in a traditional mine dust-proof water supply system depends on manpower and is low in precision and efficiency. By integrating the high-precision water pressure sensor, the angle sensor, the wireless communication module and the intelligent control system, the device can monitor the water supply pressure in real time and automatically and accurately adjust the opening degree of the electric ball valve according to a preset target value, and fine control over the water pressure is achieved. In addition, the device supports two modes of water return pressure regulation and water supply pressure regulation, and can flexibly cope with different working conditions. The system has the beneficial effects that the precision and efficiency of water pressure adjustment are remarkably improved, the burden of operators is relieved, the maintenance cost is reduced, meanwhile, the automation and intelligence level of the system is enhanced, and a powerful guarantee is provided for safety and high efficiency of a mine operation environment.

Description

Technical Field

[0001] The invention belongs to the technical field of dust control and relates to a method and a device for automatically adjusting spray water pressure. Background Art

[0002] In the field of dust control technology, especially in the field of coal mine industrial control, with the rapid development of digital and intelligent technology, higher requirements are put forward for the automation and intelligent control of mine dust control and water supply systems. As a key facility to ensure the safety of the mine working environment, the performance and efficiency of the mine dust control and water supply system directly affect the production efficiency of the mine and the health of workers.

[0003] At present, the regulation of mine water supply pressure mainly relies on manual operation, and the water pressure is adjusted by twisting the water pump return ball valve or water supply ball valve. This method has many shortcomings: first, manual adjustment is not only inefficient, but also difficult to achieve digital display and proportional adjustment of valve position, resulting in limited adjustment accuracy; second, due to the strong correlation between the water pressure of each branch in the same pipe network, it is difficult to take into account the water pressure requirements of each branch during manual adjustment, and water pressure imbalance is prone to occur; finally, this traditional adjustment method lacks automated monitoring and feedback mechanisms, making it difficult to respond to water pressure changes in a timely manner, increasing maintenance costs and safety risks.

[0004] In response to the above problems, several improvement schemes have been proposed in the prior art, but all of them have limitations. For example, one solution is to set a water pressure sensor at the user end, and manually adjust the angle of the ball valve according to the sensor feedback. Although this method introduces sensor monitoring, it is still a manual operation in essence, and the degree of automation is not high. Another solution is to replace the manual ball valve with an electric ball valve. Although it reduces the manpower output, the adjustment accuracy and automatic control still need to be improved. Another solution is to control the water supply pressure by adjusting the output power of the water supply pump through a frequency converter, but this method can only adjust the water pressure of the main pipeline, and cannot accurately control the water pressure of the branch.

[0005] Therefore, there is an urgent need for a device and method that can monitor water supply pressure in real time, automatically adjust water pressure and maintain high precision, so as to meet the intelligent and automated requirements of mine dust prevention water supply system for water pressure regulation, improve regulation efficiency and accuracy, reduce maintenance costs, and ensure the safety and efficiency of mine working environment. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a method and device for automatic regulation of spray water pressure, which monitors the water supply pressure in real time, compares it with the target water pressure, and realizes automatic regulation of water pressure by driving an electric ball valve to adjust the opening angle of the ball valve.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a spray water pressure automatic adjustment device, including a ball valve, a reduction mechanism and a drive motor connected to the ball valve, and also including a power supply system, a wireless communication module, a control system, an angle detection unit, a water pressure detection unit and an angle display window; the water pressure detection unit adopts a high-precision water pressure sensor for real-time acquisition of water supply pressure, and the control system compares the acquired water supply pressure with the target water pressure, controls the drive motor and the reduction mechanism to drive the ball valve to open or close, so as to realize automatic adjustment of water pressure; the angle detection unit adopts a high-precision angle sensor for real-time detection of the opening angle of the ball valve, and feeds back the angle information to the control system; the wireless communication module is used to receive an externally set water pressure automatic adjustment target value and a status signal and water pressure information of the upper ball valve.

[0008] Optionally, it also includes an infrared remote control receiver for receiving infrared remote control signals to set the target value for automatic water pressure adjustment and the maximum deviation value allowed for the target water pressure.

[0009] A method for automatically adjusting spray water pressure, using the above-mentioned automatic spray water pressure adjustment device, to achieve automatic adjustment of the water pressure of the mine spray water supply system, comprising the following steps:

[0010] S1, set the water pressure automatic adjustment target value P and the maximum allowable target water pressure deviation value P2 through infrared remote control and RA485 signal;

[0011] S2, continuously measure the real-time water pressure value and compare it with the water pressure automatic adjustment target value P, and calculate the absolute difference P1 between the two;

[0012] S3, when P1 is greater than P2, the ball valve is energized, and the drive motor and the reduction mechanism drive the ball valve to open, and the ball valve opens 2°-5°;

[0013] S4, determine the changing trend of P1;

[0014] S5, according to the change trend of P1, the ball valve is controlled to continue to open or close until it is detected that P1 is less than P2, the ball valve stops moving and returns to step S2 to continue measuring.

[0015] Optionally, in step S4, when P1 becomes smaller, the ball valve continues to open; when P1 becomes larger, the ball valve performs a closing action.

[0016] Optionally, it also includes a return water pressure regulation mode and a supply water pressure regulation mode, wherein:

[0017] In the return water pressure regulation mode, when the ball valve opening angle becomes larger, the water supply pressure becomes smaller; when the ball valve opening angle becomes smaller, the water pressure becomes larger;

[0018] In the water supply pressure regulation mode, when the ball valve opening angle becomes larger, the water pressure becomes larger; when the ball valve opening angle becomes smaller, the water pressure becomes smaller.

[0019] The beneficial effects of the present invention are:

[0020] 1) By integrating high-precision water pressure sensors and angle sensors and combining advanced control algorithms, the present invention can monitor the water supply pressure in real time and automatically and accurately adjust the opening of the ball valve according to the preset target value, thereby achieving fine control of the water pressure. Compared with the traditional manual adjustment method, this greatly improves the adjustment accuracy and efficiency.

[0021] 2) The device of the present invention integrates a wireless communication module and an intelligent control system, which can receive the water pressure target value set externally and automatically adjust the water pressure according to the actual situation without manual intervention. This not only reduces the burden on operators, but also improves the automation and intelligence level of the system, making water pressure regulation more convenient and efficient.

[0022] 3) By real-time monitoring of water pressure and ball valve status, the present invention can promptly detect and handle abnormal situations, avoiding damage to the system caused by excessively high or low water pressure. At the same time, the dual adjustment modes of the device (return water pressure regulation mode and water supply pressure regulation mode) can flexibly respond to different working conditions, ensure stable operation of the system, and improve production safety.

[0023] 4) Due to the realization of automatic adjustment, the frequency and intensity of manual intervention are reduced, thereby reducing the maintenance cost of the system. In addition, uploading the working status information of the device through the wireless communication module makes remote monitoring and maintenance possible, further improving the reliability and availability of the system.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 A schematic diagram of a pressure regulating device system of a method and device for automatically regulating spray water pressure of the present invention;

[0027] Figure 2 The present invention discloses a water pressure regulation flow chart of a method and device for automatically regulating spray water pressure. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] The structure and function of the automatic spray water pressure regulating device, such as Figure 1 As shown, the spray water pressure automatic regulating device in this embodiment mainly consists of the following parts:

[0032] Power supply system: Provides stable power support for the entire device to ensure the normal operation of each component.

[0033] Wireless communication module: supports infrared remote control signals and RA485 signals, used to receive the externally set water pressure automatic adjustment target value (P) and the maximum allowable deviation value of the target water pressure (P2), and upload the working status of the device (including ball valve status signal and water pressure information) to the external monitoring device.

[0034] Control system: The core control unit is responsible for receiving the data from the water pressure detection unit, comparing it with the preset water pressure target value, and controlling the operation of the drive motor according to the comparison result.

[0035] Driving motor and reduction mechanism: The driving motor is connected to the ball valve through the reduction mechanism, receives instructions from the control system, and drives the ball valve to perform an opening or closing action.

[0036] Angle detection unit: Uses a high-precision angle sensor to detect the opening angle of the ball valve in real time, and feeds the angle information back to the control system to form a closed-loop control.

[0037] Water pressure detection unit: uses a high-precision water pressure sensor to collect water supply pressure in real time and transmit the water pressure value to the control system.

[0038] Ball valve: used to adjust the flow rate of the water supply pipe, thereby controlling the water pressure.

[0039] Angle display window: displays the current rotation angle of the ball valve, allowing users to intuitively understand the working status of the device.

[0040] Infrared remote control receiver: Receives infrared remote control signals, allowing the user to set the water pressure automatic adjustment target value and the maximum deviation value of the target water pressure through the remote control.

[0041] Specific steps of the automatic adjustment method of spray water pressure

[0042] like Figure 2 As shown, the method for automatically adjusting the spray water pressure in this embodiment includes the following steps:

[0043] S1: Receive the externally set water pressure automatic adjustment target value (P) and the maximum deviation value (P2) of the target water pressure through the wireless communication module. These values ​​can be set through the infrared remote control or RA485 interface.

[0044] S2: The water pressure detection unit continuously measures the real-time value of the water supply pressure and transmits the value to the control system.

[0045] S3: The control system compares the real-time water pressure value with the preset water pressure target value (P) and calculates the absolute difference between the two (P1).

[0046] S4: When P1 is greater than P2, the control system issues a command, the drive motor and the reduction mechanism start working, driving the ball valve to open, and the ball valve opens 2°-5°.

[0047] S5: The angle detection unit detects the opening angle of the ball valve in real time and feeds the angle information back to the control system. The control system determines whether the ball valve needs to be further adjusted based on the change trend of P1.

[0048] If P1 becomes smaller, it means that the water pressure is approaching the target value, and the control system controls the ball valve to continue to open.

[0049] If P1 increases, it means that the water pressure deviates further from the target value, and the control system controls the ball valve to close until P1 decreases again.

[0050] S6: Repeat steps S2 to S5 until P1 is less than P2, at which point the ball valve stops moving and maintains the current opening to achieve automatic adjustment of the water pressure.

[0051] In addition, the device in this embodiment also supports two adjustment modes: return water pressure adjustment mode and supply water pressure adjustment mode. Users can select a suitable mode to adjust the water pressure according to actual needs.

[0052] To sum up, it can be clearly seen how the present invention realizes the automatic and intelligent adjustment of the water pressure of the mine dust prevention water supply system by integrating high-precision sensors, wireless communication modules and intelligent control systems, thereby improving the adjustment accuracy and efficiency, reducing maintenance costs, and ensuring the safety and efficiency of the mine working environment.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A spray water pressure automatic regulating device, characterized in that: It includes a ball valve, a speed reduction mechanism and a driving motor connected to the ball valve, and also includes a power supply system, a wireless communication module, a control system, an angle detection unit, a water pressure detection unit and an angle display window; The water pressure detection unit uses a high-precision water pressure sensor to collect the water supply pressure in real time. The control system compares the collected water supply pressure with the target water pressure, controls the drive motor and the reduction mechanism to drive the ball valve to open or close, so as to achieve automatic adjustment of the water pressure; the angle detection unit uses a high-precision angle sensor to detect the opening angle of the ball valve in real time and feed back the angle information to the control system; The wireless communication module is used to receive the externally set water pressure automatic adjustment target value and the status signal and water pressure information of the upper ball valve.

2. The automatic spray water pressure regulating device according to claim 1, characterized in that: It also includes an infrared remote control receiver for receiving infrared remote control signals to set a target value for automatic water pressure adjustment and a maximum deviation value allowed for the target water pressure.

3. A method for automatically adjusting spray water pressure, using a spray water pressure automatic adjustment device as claimed in any one of claims 1 or 2 to realize automatic adjustment of water pressure of a mine spray water supply system, characterized in that: The following steps are involved: S1, set the water pressure automatic adjustment target value P and the maximum allowable target water pressure deviation value P2 through infrared remote control and RA485 signal; S2, continuously measure the real-time water pressure value and compare it with the water pressure automatic adjustment target value P, and calculate the absolute difference P1 between the two; S3, when P1 is greater than P2, the ball valve is energized, and the drive motor and the reduction mechanism drive the ball valve to open, and the ball valve opens 2°-5°; S4, determine the changing trend of P1; S5, according to the change trend of P1, the ball valve is controlled to continue to open or close until it is detected that P1 is less than P2, the ball valve stops moving and returns to step S2 to continue measuring.

4. A method for automatically adjusting spray water pressure according to claim 3, characterized in that: In step S4, when P1 becomes smaller, the ball valve continues to open; when P1 becomes larger, the ball valve performs a closing action.

5. The method for automatically adjusting spray water pressure according to claim 4, characterized in that: It also includes return water pressure regulation mode and supply water pressure regulation mode, in which: In the return water pressure regulation mode, when the ball valve opening angle becomes larger, the water supply pressure becomes smaller; when the ball valve opening angle becomes smaller, the water pressure becomes larger; In the water supply pressure regulation mode, when the ball valve opening angle becomes larger, the water pressure becomes larger; when the ball valve opening angle becomes smaller, the water pressure becomes smaller.

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