A method and device for monitoring the operating status of a bidirectional pressure regulating tower

Abstract

The invention discloses a monitoring method and device for the operating status of a bidirectional pressure regulating tower, and relates to the technical field of a status monitoring system, including a bidirectional pressure regulating tower inlet and outlet pressure difference monitoring, a piston stroke monitoring and an information device. The bidirectional pressure regulating tower inlet and outlet pressure difference monitoring collects the pressures of an upper valve body and a lower valve body of the bidirectional pressure regulating tower, and calculates a net pressure difference according to two measurement signals. The piston stroke monitoring collects a displacement signal of a piston, and a normal and faulty state of the piston. The information device acquires and collects various information through a signal acquisition device, and uploads the above information to a remote end through a wireless transmission device (DTU), so as to ensure the safe and stable operation of the bidirectional pressure regulating tower.

Description

Technical Field

[0001] The invention relates to the technical field of state monitoring systems, and in particular to a method and a device for monitoring the operating state of a bidirectional pressure regulating tower. Background Art

[0002] In long-distance water pipelines, when power failure and pump stop occur, serious water hammer phenomenon often occurs. The occurrence of water hammer will cause damage to the unit, pipeline and its ancillary equipment. Therefore, in order to prevent water hammer damage, single and two-way pressure regulating towers, air valves, pressure fluctuation pre-stop valves, air tanks and other water hammer protection equipment are usually set. Among them, the two-way pressure regulating tower is a water hammer protection device with both water injection and water discharge buffering. Its main working principle is: to prevent negative pressure from being generated in the pressure water transmission main pipe. Once the pressure in the pipeline is reduced, the pressure regulating tower quickly replenishes water to the pipeline. When the water hammer pressure in the pipeline increases, it allows high-pressure water to flow into the pressure regulating tower, thereby playing a role in buffering the water hammer pressure rise. The two-way pressure regulating tower has a simple structure, safe and reliable operation, less maintenance work, and good protection effect. However, if the pipeline pressure is very high, the pressure regulating tower body is very high, which can be as high as tens of meters or even hundreds of meters, which makes the project cost high, increases the burden of operation and management, is difficult to coordinate with the surrounding environment, and the safety of the structure itself is difficult to guarantee. At present, box-type two-way pressure regulating towers are widely used. They adopt the principle of piston pressure increase with unequal areas above and below, reduce the height of the pressure regulating tower, expand the scope of use of the two-way pressure regulating tower, and reduce the project cost.

[0003] Since the box-type bidirectional pressure-regulating tower itself is a purely mechanical structure and its installation location is far away from the operation and management center, when water hammer occurs in the pipeline, the pressure relief value setting of the pressure-regulating tower, the working condition of the piston, the water discharge effect and other states cannot be monitored in real time. Summary of the invention

[0004] The object of the present invention is to provide a method and device for detecting the operating status of a bidirectional pressure regulating tower, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a method and device for monitoring the operating status of a bidirectional pressure regulating tower, comprising a bidirectional pressure regulating tower inlet and outlet pressure difference monitoring, a piston stroke monitoring and information device, wherein the bidirectional pressure regulating tower inlet and outlet pressure difference monitoring signal and the piston stroke signal are connected to the information device. It is characterized in that:

[0006] The bidirectional pressure regulating tower inlet and outlet pressure differential monitoring includes 2 sets of electronic differential pressure transmitters;

[0007] The piston stroke monitoring includes 2 sets of linear displacement meters;

[0008] The information device consists of a signal collection device, a wireless transmission device and a solar power supply system.

[0009] The information device collects the inlet and outlet pressure signals and piston stroke signals of the bidirectional pressure regulating tower online through the signal collection device, and displays the monitoring data in real time in the form of curves and lists.

[0010] The wireless transmission device remotely uploads the monitoring data to the control center.

[0011] The solar power supply system provides power to the electronic differential pressure transmitter, the linear displacement meter, the signal collection device, and the wireless transmission equipment.

[0012] Furthermore, the signal acquisition device can store the monitoring data in real time, and give a real-time alarm when a fault occurs in the pressure regulating tower, and the alarm value can be set.

[0013] Furthermore, the electronic differential pressure transmitter is composed of two differential pressure transmitters, the main transmitter is installed on the upper valve body of the pressure regulating tower, and the slave transmitter is installed on the lower valve body of the pressure regulating tower, and the two are connected by a signal cable.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting up a two-way pressure regulating tower inlet and outlet differential pressure monitoring, a piston stroke monitoring and an information device, when in use, the two-way pressure regulating tower inlet and outlet differential pressure monitoring collects the pressure of the upper valve body and the lower valve body of the two-way pressure regulating tower, and the net pressure difference is calculated based on the two measurement signals, the piston stroke monitoring collects the displacement signal of the piston, the normal and fault status of the piston, the information device obtains and collects various information through the signal collection device, and uploads the above information to the remote end through the wireless transmission device (DTU). The two-way pressure regulating tower inlet and outlet differential pressure monitoring, piston stroke monitoring and information device are all powered by a solar power supply system. Through the above design, a monitoring method and device with timeliness, accuracy, and remote data transmission function can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the planar structure of the present invention.

[0016] In the figure: 1. Bidirectional pressure regulating tower inlet and outlet pressure difference monitoring; 2. Piston stroke monitoring; 3. Information device; 4. Electronic differential pressure transmitter; 5. Linear displacement meter; 6. Signal acquisition device; 7. Wireless transmission equipment (DTU); 8. Solar power supply system; 9. Differential pressure transmitter. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0018] See also Figure 1 , a monitoring device for the operation status of a bidirectional pressure regulating tower, comprising a bidirectional pressure regulating tower inlet and outlet pressure differential monitoring 1, a piston stroke monitoring 2 and an information device 3, the bidirectional pressure regulating tower inlet and outlet pressure differential monitoring 1 signal and the piston stroke signal are connected to the information device 3, the bidirectional pressure regulating tower inlet and outlet pressure differential monitoring 1 comprises two sets of electronic pressure differential transmitters 94, the piston stroke monitoring 2 comprises two sets of linear displacement meters 5, the information device 3 comprises a signal acquisition device 6, a wireless transmission device DTU7 and a solar power supply system 8, the information device 3 collects the bidirectional pressure regulating tower inlet and outlet pressure signals and piston stroke signals online through the signal acquisition device 6, and displays the monitoring data in real time in the form of curves and lists, the wireless transmission device DTU7 remotely uploads the monitoring data to the control center, overpressure alarm, piston jam alarm, etc., the solar power supply system 8 provides power to the electronic differential pressure transmitter 94, the linear displacement meter 5, the signal acquisition device 6, and the wireless transmission device DTU7;

[0019] Two sets of linear displacement meters include:

[0020] Linear displacement meter 1 The displacement meter is installed directly below the mechanical indicator scale. The displacement meter telescopic device is connected to the indicator scale by welding or screws. Linear displacement meter 2

[0021] The displacement meter is installed above the piston connecting rod, and the "Z"-shaped bracket is fixed to the pressure regulating tower shell by welding. The displacement meter telescopic device is connected to the piston connecting rod by welding or screws;

[0022] Differential pressure transmitter 9. The differential pressure transmitter of this device is divided into a master and a slave device. The master and the slave devices can be connected by electrical connection only without pipelines. The master transmitter is installed on the upper valve body of the pressure regulating tower, and the slave transmitter is installed on the lower valve body of the pressure regulating tower. The two are connected by a signal cable;

[0023] Specifically, in water supply and drainage systems, water hammer is a common problem. This phenomenon usually occurs when the pipeline system suddenly stops or changes flow direction, causing the kinetic energy of the water flow to be quickly converted into pressure energy, thereby generating shock waves and causing damage to the pipeline. In order to solve this problem, engineers have designed a device called a two-way pressure regulating tower. The two-way pressure regulating tower is an efficient water hammer protection device. Its main functions include overpressure relief and negative pressure water replenishment. This device can automatically release excess pressure when the pressure in the pipeline exceeds the set value, and quickly replenish water when the pipeline pressure decreases, thereby preventing the pipeline from being damaged due to negative pressure. In this way, the two-way pressure regulating tower effectively protects For the safe operation of the pipeline system, the box-type two-way pressure-regulating tower is an important technological innovation in this field. Compared with the traditional pressure-regulating tower, it adopts the principle of piston pressure-increasing with unequal areas above and below, which greatly reduces the height of the pressure-regulating tower and saves the engineering cost. In addition, this design also enhances the flexibility of pressure regulation and improves the stability and reliability of the equipment. Specifically, when the pressure in the pipeline increases, if it exceeds the maximum design water pressure for normal operation, the combined force of the lower part of the piston in the box-type hammer-eliminating two-way pressure-regulating tower will be greater than the combined force of the upper part, causing the piston to move upward and open the drain port. In this way, the ultra-high pressure can be released, thereby protecting the pipeline from damage. On the contrary, when the pressure in the pipeline drops to When the pressure is lower than the water depth in the tank or negative pressure occurs, the water in the tank will flow into the pipe to eliminate or prevent the pipeline from being cut off and reduce the occurrence of water hammer. In order to better monitor and manage the working status of the two-way pressure regulating tower, some advanced systems have been developed. For example, an intelligent two-way pressure regulating tower system integrates high-tech components such as ultrasonic level meter, PLC monitoring system and high-frequency pressure sensor. These components can monitor the liquid level and pressure changes in the tower in real time, and provide detailed information about the operating status of the equipment through data analysis, which not only improves the management efficiency of the equipment, but also facilitates maintenance and fault diagnosis. In addition to the above technical features, the design of the two-way pressure regulating tower also takes into account the actual The convenience of practical operation, for example, its water injection speed is fast, and water can be injected from the bottom through the pipe, or through the valve port of the inflation valve to achieve synchronous water injection. In addition, its drainage effect is also very good. The two fixed-depth overflow pipes ensure the effective height of the water level in the box-type hammer-eliminating two-way pressure-regulating tower. If the accumulated water needs to be emptied, it can be drained through the vent pipes on both sides. As an important water hammer protection equipment, the two-way pressure-regulating tower is not only technically innovative, but also shows high efficiency and stability in practical applications. With the advancement of science and technology and the development of engineering technology, I believe that there will be more optimized and innovative designs in the future to further improve the safety and economy of the water supply and drainage system.

[0024] Working principle: Specifically, in water supply and drainage systems, water hammer is a common problem. This phenomenon usually occurs when the pipeline system suddenly stops or changes flow direction, causing the kinetic energy of the water flow to be quickly converted into pressure energy, thereby generating shock waves and causing damage to the pipeline. In order to solve this problem, engineers have designed a device called a two-way pressure regulating tower. The two-way pressure regulating tower is a highly efficient water hammer protection device. Its main functions include overpressure relief and negative pressure water replenishment. This device can automatically release excess pressure when the pressure in the pipeline exceeds the set value, and quickly replenish water when the pipeline pressure decreases, thereby preventing the pipeline from being damaged due to negative pressure. In this way, the two-way pressure regulating tower effectively protects The box-type two-way pressure-regulating tower ensures the safe operation of the pipeline system. It is an important technological innovation in this field. Compared with the traditional pressure-regulating tower, it adopts the principle of piston pressure-increasing with unequal areas above and below, which greatly reduces the height of the pressure-regulating tower and saves the engineering cost. In addition, this design also enhances the flexibility of pressure regulation and improves the stability and reliability of the equipment. Specifically, when the pressure in the pipeline increases, if it exceeds the maximum design water pressure for normal operation, the combined force of the lower part of the piston in the box-type two-way pressure-regulating tower will be greater than the combined force of the upper part, causing the piston to move upward and open the drain port. In this way, the ultra-high pressure can be released, thereby protecting the pipeline from damage. On the contrary, when the pressure in the pipeline drops to a level lower than that in the box, When the water depth is high or negative pressure occurs, the water in the box will flow into the pipe to eliminate or prevent the pipe from being cut off and reduce the occurrence of water hammer. In order to better monitor and manage the working status of the two-way pressure regulating tower, some advanced systems have been developed. For example, an intelligent two-way pressure regulating tower system integrates high-tech components such as ultrasonic level meter, PLC monitoring system and high-frequency pressure sensor. These components can monitor the liquid level and pressure changes in the tower in real time, and provide detailed information about the operating status of the equipment through data analysis. This not only improves the management efficiency of the equipment, but also facilitates maintenance and fault diagnosis. In addition to the above technical features, the design of the two-way pressure regulating tower also takes into account the convenience of actual operation. For example, it has a fast water injection speed. It can be injected from the bottom through the pipeline or through the valve port of the inflation valve to achieve synchronous water injection. In addition, its drainage effect is also very good. The two fixed-depth overflow pipes ensure the effective height of the water level in the box-type hammer-eliminating two-way pressure regulating tower. If the accumulated water needs to be emptied, it can be drained through the vent pipes on both sides. As an important water hammer protection equipment, the two-way pressure regulating tower is not only innovative in technology, but also shows high efficiency and stability in practical applications. With the advancement of science and technology and the development of engineering technology, it is believed that there will be more optimized and innovative designs in the future to further improve the safety and economy of water supply and drainage systems. The two sets of linear displacement meters include:

[0025] Linear displacement meter 1 The displacement meter is installed directly below the mechanical indicator scale. The displacement meter telescopic device is connected to the indicator scale by welding or screws. Linear displacement meter 2

[0026] The displacement meter is installed above the piston connecting rod, and the "Z"-shaped bracket is fixed to the pressure regulating tower shell by welding. The displacement meter telescopic device is connected to the piston connecting rod by welding or screws;

[0027] Differential pressure transmitter 9. The differential pressure transmitter of this device is divided into master and slave devices. The master and slave devices only need to be electrically connected without pipeline connection. The master transmitter is installed on the upper valve body of the pressure regulating tower, and the slave transmitter is installed on the lower valve body of the pressure regulating tower. The two are connected by a signal cable. The inlet and outlet pressure signals and piston stroke signals of the two-way pressure regulating tower are collected online, and the monitoring data are displayed in real time in the form of curves and lists. The wireless transmission device DTU7 remotely uploads the monitoring data to the control center, overpressure alarm, piston jam alarm, etc. The solar power supply system 8 provides power to the electronic differential pressure transmitter 94, the linear displacement meter 5, the signal acquisition device 6, and the wireless transmission device DTU7. At the same time, it can realize a monitoring method and device with timeliness, accuracy, and remote data transmission function.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A monitoring device for the operating status of a bidirectional pressure regulating tower, comprising a bidirectional pressure regulating tower inlet and outlet pressure differential monitoring device (1), a piston stroke monitoring device (2) and an information device (3), wherein the bidirectional pressure regulating tower inlet and outlet pressure differential monitoring device (1) signal and the piston stroke signal are connected to the information device (3), characterized in that: The bidirectional pressure regulating tower inlet and outlet pressure difference monitoring (1) includes two sets of electronic differential pressure transmitters (9) (4); The piston stroke monitoring (2) includes two sets of linear displacement meters (5); The information device (3) comprises a signal collection device (6), a wireless transmission device (DTU) (7) and a solar power supply system (8); The information device (3) collects the inlet and outlet pressure signals and piston stroke signals of the bidirectional pressure regulating tower online through the signal collection device (6), and displays the monitoring data in real time in the form of curves and lists; The wireless transmission device (DTU) (7) remotely uploads the monitoring data to the control center (overpressure alarm, piston jam alarm, etc.); The solar power supply system (8) provides power to the electronic differential pressure transmitter (9) (4), the linear displacement meter (5), the signal collection device (6), and the wireless transmission device (DTU) (7).

2. The monitoring device for the operating status of a bidirectional pressure regulating tower according to claim 1, characterized in that: The signal acquisition device (6) can store the monitoring data in real time and give a real-time alarm when a fault occurs in the pressure regulating tower, and the alarm value can be set.

3. The monitoring device for the operating status of a bidirectional pressure regulating tower according to claim 2, characterized in that: The electronic differential pressure transmitter (9) (4) is composed of two (master and slave) differential pressure transmitters (9), wherein the master transmitter is installed on the upper valve body of the pressure regulating tower, and the slave transmitter is installed on the lower valve body of the pressure regulating tower, and the two are connected by a signal cable.

4. A method for monitoring the operating status of a bidirectional pressure regulating tower, characterized in that: Use the device as described in any one of claims 1-3.

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