An automated pulsed cleaning control system that can be pneumatically executed

Abstract

The utility model provides an automatic pulse cleaning control system of pneumatic execution, including power module, execution module and medium path module, the power module includes water pump and gas storage tank, the execution module includes pneumatic valve and pilot valve island, the pneumatic valve passes through the pilot valve island and communicates the gas storage tank, be equipped with pulse generator, water pump and a plurality of pneumatic valve on the medium path module, pulse generator communicates water pump with the gas storage tank to be used for forming pulse medium, the medium path module is used for bearing cleaning action, the execution module is used for controlling the cleaning action of medium path module. The application is adapted to the cleaning working condition of big pipe diameter, big flow, high frequency impact through the pneumatic valve, has the advantages of automatic control, control speed is fast, high frequency impact resistance, high reliability, makes the whole cleaning device more compact, economic and convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of pulse cleaning, specifically to an automated pulse cleaning control system that can be pneumatically executed. Background Technology

[0002] Heat exchangers, as key equipment for heat exchange in industrial fields such as nuclear power, thermal power, urban heating, and chemical industry, primarily function to cool high-temperature media systems with cooling water, thereby ensuring the continuous, stable, and efficient operation of the equipment. Maintaining the cleanliness of the heat exchanger's internal components helps reduce temperature differences, improve heat transfer efficiency, reduce system energy consumption, and further save plant electricity, ultimately ensuring the safe and reliable operation of the entire cooling system. Currently, common cleaning methods mainly include traditional manual cleaning and electromagnetic pulse cleaning. Manual cleaning requires a large investment of manpower, involving a certain degree of disassembly of the heat exchange mechanism for cleaning. This is not only labor-intensive and inefficient but also prone to water pollution and equipment damage. In contrast, electromagnetic pulse cleaning technology can achieve efficient cleaning without disassembling the heat exchanger, gradually becoming a more environmentally friendly and economical cleaning option.

[0003] Currently, most pulse cleaning equipment still uses manual or electric valves to control the cleaning pipeline. However, when cleaning large heat exchangers, the specifications of the cleaning pipeline can often reach DN100 or even higher. In this case, manual valve operation is time-consuming, labor-intensive, and inefficient, while electric valves are prone to reliability and durability problems due to the high-frequency impact of the pulse medium.

[0004] Therefore, existing pulse cleaning control systems for large heat exchangers have manual and electric valves that are difficult to adapt to the cleaning conditions of large pipe diameter, high flow rate, and high frequency impact, thus restricting the development of the overall pulse cleaning system.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a pneumatically actuated automated pulse cleaning control system. This system uses a self-contained air tank in the pulse cleaning device to drive pneumatic valves, making it highly adaptable to pulse cleaning conditions involving large pipe diameters, high flow rates, and high-frequency impacts.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a power module, an execution module, and a media path module; the power module includes a water pump and an air storage tank; the execution module includes a pneumatic valve and a pilot valve island, the pneumatic valve being connected to the air storage tank through the pilot valve island; the media path module is equipped with a pulse generator, the water pump, and several pneumatic valves, the pulse generator being connected to the water pump and the air storage tank to form a pulse medium; the media path module is used to carry out the cleaning action, and the execution module is used to control the cleaning action of the media path module.

[0008] This application utilizes an air tank as a power module. In addition to its function of forming a pulse medium in conjunction with the water pump, the air tank can also provide the pneumatic power required for the switching function of the pneumatic valve through the pilot valve island of the actuator module. The pneumatic valve is adapted to cleaning conditions with large pipe diameter, large flow rate, and high frequency impact. Compared with manual valves, it has the advantages of automatic control and fast control speed. Compared with electric valves, it has the advantages of high frequency impact resistance and high reliability. Moreover, the control system of this embodiment uses the compressed air source in the air tank already equipped in the pulse cleaning device to control the pneumatic valve, without the need for an additional compressed air source as a power module. This improves energy utilization efficiency, reduces the complexity of the overall structure maintenance of the device, and makes the entire cleaning device more compact, economical, and easy to maintain.

[0009] Based on the above, the media path module includes a buffer tank, which is connected to a water source, and the buffer tank provides liquid media to the pulse generator through the water pump.

[0010] The buffer tank enables buffering when supplying liquid media to the pulse generator, which facilitates automated control of cleaning operations.

[0011] Based on the above, the buffer tank is connected to a dosing device, and a dosing metering pump is provided between the buffer tank and the dosing device.

[0012] By using a dosing device and a dosing metering pump, a dosing medium is formed in the buffer tank, enabling the chemical cleaning of the target object.

[0013] Based on the above, the media path module includes a cleaning inlet pipe and a cleaning return pipe for cleaning the target. The cleaning inlet pipe is connected to the output end of the pulse generator, and the cleaning return pipe is connected to the buffer tank, so that a circulation loop is formed between the buffer tank and the cleaning target.

[0014] The circulation loop between the buffer tank and the cleaning target, formed by the cleaning inlet and return water pipes, allows the dosing medium to circulate multiple times between the buffer tank and the cleaning target.

[0015] Based on the above, the pneumatic valve includes a first multi-way valve and a second multi-way valve. The first multi-way valve is located on the cleaning inlet pipe and connected to the second multi-way valve. The second multi-way valve is located on the cleaning return pipe and connected to the buffer tank and the drain pipe, respectively.

[0016] The output of the pulse generator can be directly connected to the buffer tank and the drain pipe through the first and second multi-way valves, so as to clean the buffer tank and the drain pipe through the pulse medium.

[0017] Based on the above, the buffer tank is connected to the drain pipe through an overflow pipe, and a neutralization tank is installed on the drain pipe.

[0018] The overflow pipe enables the buffer tank to overflow and discharge, while the neutralization tank is used to neutralize the dosing medium during discharge to prevent environmental pollution.

[0019] Based on the above, the control system also includes an information acquisition module, which includes a pH sensor and a pressure sensor. The pH sensor and the pressure sensor are installed on both the cleaning inlet pipe and the cleaning return pipe. The information acquisition module is used to detect the cleaning effect.

[0020] The pH sensors on the inlet and outlet pipes of the cleaning system can detect the pH value of the chemical cleaning medium before and after it enters and exits the cleaning target, thereby calculating the progress of the chemical cleaning. The pressure sensors on the inlet and outlet pipes of the cleaning system can detect the pressure difference of the cleaning medium after it enters the cleaning target, thereby calculating the overall cleaning progress of the cleaning target.

[0021] Based on the above, the pulse generator includes a mixer and a pneumatically operable pulse valve. The pulse valve is connected to the air storage tank through the pilot valve island to achieve pneumatic opening and closing. The two input terminals of the mixer are respectively connected to the pulse valve and the water pump.

[0022] The pulse generator can be pneumatically controlled by a pneumatically operable pulse valve, which facilitates rapid switching of cleaning actions.

[0023] Based on the above, the execution module further includes a pneumatic electric valve, which is located between the gas storage tank and the pulse generator.

[0024] By using an electric valve in the gas path, an additional shut-off valve can be provided for the pipeline between the gas tank and the pulse valve, avoiding gas leakage problems when the gas supply from the gas tank is insufficient and the pulse valve cannot be kept in a normally closed state through the pilot valve island.

[0025] Based on the above, a buffer gas tank is provided between the pilot valve island and the gas storage tank.

[0026] The use of a buffer gas tank helps to ensure a stable supply of air to the pilot valve island, thus guaranteeing the stable operation of the pneumatic valve.

[0027] This utility model has substantial features and progress compared to the prior art. Specifically, this application uses a pneumatic valve to adapt to cleaning conditions with large pipe diameter, large flow rate, and high frequency impact. It has the advantages of automatic control, fast control speed, resistance to high frequency impact, and high reliability. Moreover, it improves energy utilization efficiency, reduces the complexity of overall device structure maintenance, and makes the entire cleaning device more compact, economical, and easy to maintain.

[0028] This application uses a media path module to carry out cleaning actions, which may include: pulse rinsing, chemical dosing and circulation cleaning, and liquid media rinsing. The cleaning actions of the media path module are controlled by an execution module, which can provide the required pneumatic power to the pneumatic valve and pulse valve through the air tank via the pilot valve island, thereby changing the cleaning actions. Combined with the information acquisition module, the cleaning actions can be changed automatically, enabling fully automated cleaning of the target. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model; In the figure, the attached labels are as follows: water pump 11, air tank 12, buffer air tank 13; pilot valve island 21, pulse valve 22, first multi-way valve 23, second multi-way valve 24, air circuit electric valve 25; mixer 31, buffer tank 32, dosing device 33, dosing metering pump 34, cleaning inlet pipe 35, cleaning return pipe 36, drain pipe 37, overflow pipe 38; pH sensor 41, pressure sensor 42; cleaning target 50. Detailed Implementation

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0031] Example 1 like Figure 1 As shown, the pneumatically operable automated pulse cleaning control system of this embodiment includes a power module, an execution module, and a media path module. The power module is used to provide power to the execution module and the media path module respectively. The media path module is used to carry out the cleaning action, and the execution module is used to control the cleaning action carried by the media path module.

[0032] The media path module is connected to the cleaning target 50 to output pulsed media to the cleaning target, thereby realizing the output of the cleaning action carried by it. For example, the cleaning target 50 can be a plate heat exchanger.

[0033] The execution module can be connected to the control module, which can assign control tasks. The control module may include a PLC, etc.

[0034] Specifically, the power module includes a water pump 11 and an air tank 12; the actuation module includes pneumatic valves and a pilot valve island 21; and the media path module is equipped with a pulse generator, a water pump 11, and several pneumatic valves.

[0035] In this embodiment, the water pump 11 provides the power for the flow of liquid medium to the pulse generator of the medium path module. After passing through the pulse generator, the liquid medium can form a pulse medium, which acts on the cleaning target 50. Alternatively, the liquid medium can remain a liquid medium after passing through the pulse generator when the pulse generator is not activated, and the liquid medium acts on the cleaning target 50. Or, in other embodiments, the liquid medium can be provided directly to the cleaning target 50 without passing through the pulse generator.

[0036] The air source for the air tank 12 can be a matching air compressor or a plant air pipe; the air tank 12 provides a compressed air source to the pulse generator of the medium path module to generate pulses in the liquid medium. The pulse generator is connected to both the water pump 11 and the air tank 12 to form a pulse medium; the air tank 12 also provides pneumatic power to a portion of the pneumatically actuated execution modules to control their switching functions. The air tank 12 provides pneumatic power to the pneumatic valves through the pilot valve island 21 to enable the pneumatic valves to switch functions.

[0037] In addition, the power module is also controlled by the control module through the execution module, such as controlling the start and stop of the water pump 11 and its power, and controlling the gas output and gas source input of the gas storage tank 12.

[0038] In this embodiment, the control system utilizes the air tank 12 as a power module. In addition to functioning with the water pump 11 to generate a pulse medium, the air tank 12 can also provide the pneumatic power required for the switching function of the pneumatic valve through the pilot valve island 21 of the actuator module. The pneumatic valve is adapted to cleaning conditions with large pipe diameter, large flow rate, and high frequency impact. Compared with manual valves, it has the advantages of automatic control and fast control speed. Compared with electric valves, it has the advantages of high frequency impact resistance and high reliability. Moreover, the control system of this embodiment uses the compressed air source in the air tank 12 already equipped in the pulse cleaning device to control the pneumatic valve, without the need to equip an additional compressed air source as a power module. This improves energy utilization efficiency, reduces the complexity of the overall structure maintenance of the device, and makes the entire cleaning device more compact, economical, and easy to maintain.

[0039] Example 2 The main difference between this embodiment and embodiment 1 is that the medium path module includes a buffer tank 32, which is connected to a water source. The water inlet control of the buffer tank 32 can be completed by the control module through the execution module. The buffer tank 32 can be equipped with functional configurations such as a level gauge, an electric heating device, a temperature sensor, and an exhaust port.

[0040] The buffer tank 32 supplies liquid medium to the pulse generator via the water pump 11.

[0041] The buffer tank 32 enables buffering when supplying liquid medium to the pulse generator, which is beneficial for the automated control of cleaning operations.

[0042] Based on the above, a dosing device 33 is connected to the buffer tank 32, and a dosing metering pump 34 is provided between the buffer tank 32 and the dosing device 33. The control of the dosing device 33 and the dosing metering pump 34 can be completed by the control module through the execution module. Through the dosing device 33 and the dosing metering pump 34, a dosing medium is formed in the buffer tank 32, which enables the function of chemical cleaning of the cleaning target 50.

[0043] Based on the above, the buffer tank 32 is drained through the overflow pipe 38. The overflow pipe 38 enables the buffer tank 32 to overflow and drain.

[0044] Example 3 The main difference between this embodiment and embodiment 2 is that the media path module includes a cleaning inlet pipe 35 and a cleaning return pipe 36 for the cleaning target 50 to receive and return water. The cleaning inlet pipe 35 is connected to the output end of the pulse generator, and the cleaning return pipe 36 is connected to the buffer tank 32, so that a circulation loop is formed between the buffer tank 32 and the cleaning target 50.

[0045] The circulation loop between the buffer tank 32 and the cleaning target 50 formed by the cleaning inlet pipe 35 and the cleaning return pipe 36 allows the dosing medium to circulate between the buffer tank 32 and the cleaning target 50 multiple times. During this period, the dosing device 33 and the dosing metering pump 34 can replenish the dosing medium.

[0046] Based on the above, a filter is provided between the cleaning return water pipe 36 and the buffer tank 32.

[0047] Example 4 The main difference between this embodiment and embodiment 3 is that the pneumatic valve includes a first multi-way valve 23 and a second multi-way valve 24. The first multi-way valve 23 is located on the cleaning inlet pipe 35 and connected to the second multi-way valve 24. The second multi-way valve 24 is located on the cleaning return pipe 36 and connected to the buffer tank 32 and the drain pipe 37 respectively.

[0048] The first multi-way valve 23 and the second multi-way valve 24 are connected to the gas storage tank 12 through the pilot valve island 21 to obtain gas source as starting power to switch the flow direction.

[0049] The output of the pulse generator and the buffer tank 32 can be directly connected through the first multi-way valve 23 and the second multi-way valve 24, and the output of the pulse generator and the drain pipe 37 can be directly connected to achieve cleaning of the buffer tank 32 and the drain pipe 37 through the pulse medium.

[0050] To achieve the above functions, the first multi-way valve 23 can be a four-way valve and the second multi-way valve 24 can be a three-way valve, or the first multi-way valve 23 can be a three-way valve and the second multi-way valve 24 can be a four-way valve. The reason for the difference between the two schemes is that the cleaning return water pipe 36 is connected to the first multi-way valve 23 or the second multi-way valve 24.

[0051] Based on the above, the buffer tank 32 is connected to the drain pipe 37 through the overflow pipe 38.

[0052] Based on the above, a neutralization tank is provided on the sewage pipe 37. The neutralization tank is used to neutralize the dosing medium during sewage discharge to prevent environmental pollution.

[0053] Example 5 The main difference between this embodiment and the above embodiments is that the control system also includes an information acquisition module, which includes a pH sensor 41 and a pressure sensor 42. The pH sensor 41 and the pressure sensor 42 are installed on both the cleaning inlet pipe 35 and the cleaning return pipe 36. The information acquisition module is used to detect the cleaning effect.

[0054] The pH sensor 41 on the cleaning inlet pipe 35 and the cleaning return pipe 36 can detect the pH value of the chemical dosing medium before and after entering and exiting the cleaning target 50, thereby calculating the progress of chemical cleaning; the pressure sensor 42 on the cleaning inlet pipe 35 and the cleaning return pipe 36 can detect the pressure difference of the cleaning medium after entering the cleaning target 50, thereby calculating the overall cleaning progress of the cleaning target 50.

[0055] Based on the above, a pH sensor can be installed on the buffer tank 32 to measure the dosage of the dosing medium.

[0056] Based on the above, the information acquisition module can be connected to the control module to provide feedback on the acquired information.

[0057] Based on the above, the information acquisition module can also be set on the power module, for example, to collect the air pressure value of the air storage tank 12.

[0058] Example 6 The main difference between this embodiment and the above embodiments is that the pulse generator includes a mixer 31 and a pneumatically operable pulse valve 22. The pulse valve 22 is connected to the air storage tank 12 through the pilot valve island 21 to achieve pneumatic opening and closing. The two input ends of the mixer 31 are respectively connected to the pulse valve 22 and the water pump 11.

[0059] The pneumatically operable pulse valve 22 is similar to a pneumatic valve and belongs to the actuator module. After the compressed air from the air tank 12 is connected to the pulse valve 22 through the pilot valve island 21, the pulse valve 22 can be kept in a normally open or normally closed state.

[0060] The input end of the mixer 31 is connected to the air storage tank 12 through the pulse valve 22. When the pulse valve 22 is normally open, the compressed air passes through the pulse valve 22 to form pulse gas. The pulse gas mixes with the liquid medium driven by the water pump 11 in the mixer 31 to form pulse medium.

[0061] The two input terminals of the mixer 31 are connected to the water pump 11 and the air tank 12 through pipelines respectively. The output terminal of the mixer 31 outputs pulse medium, for example, through the first multi-way valve 23 to the cleaning target 50 or the second multi-way valve 24.

[0062] When the input of mixer 31 is connected only to water pump 11 and not to gas storage tank 12, the output of mixer 31 outputs liquid medium instead of pulse medium.

[0063] The pulse generator can be pneumatically controlled by the pneumatically openable and closed pulse valve 22, which facilitates the rapid switching of cleaning actions.

[0064] Based on the above, the execution module also includes a pneumatic electric valve 25, which is located between the gas storage tank 12 and the pulse generator.

[0065] The pneumatic electric valve 25 provides an additional shut-off valve for the pipeline between the gas tank 12 and the pulse valve 22, preventing gas leakage when the gas supply to the gas tank 12 is insufficient and the pulse valve 22 cannot be kept normally closed by the pilot valve island 21.

[0066] In other embodiments, the pneumatic electric valve 25 can also be replaced by a manual valve.

[0067] Example 7 The main difference between this embodiment and the above embodiments is that a buffer gas tank 13 is provided between the pilot valve island 21 and the gas storage tank 12.

[0068] The buffer gas tank 13 facilitates a stable supply of air to the pilot valve island 21, ensuring the stable operation of the pneumatic valve.

[0069] In summary, in the pneumatically actuated automated pulse cleaning control system of this application, the cleaning action is carried out by the media path module, and the cleaning action may include: pulse rinsing, chemical dosing circulation cleaning, and liquid media rinsing; the cleaning action of the media path module is controlled by the execution module, which can provide the required pneumatic power to the pneumatic valve and pulse valve 22 through the air tank 12 via the pilot valve island 21, thereby changing the cleaning action; combined with the information acquisition module and the set cleaning parameters, the cleaning action can be automatically changed, and the cleaning target 50 can be fully automated.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A pneumatically actuated automated pulse cleaning control system, characterized in that, It includes a power module, an execution module, and a media path module; The power module includes a water pump (11) and an air storage tank (12). The execution module includes a pneumatic valve and a pilot valve island (21), and the pneumatic valve is connected to the air storage tank (12) through the pilot valve island (21). The medium path module is equipped with a pulse generator, the water pump (11) and several pneumatic valves. The pulse generator is connected to the water pump (11) and the air storage tank (12) to form a pulse medium. The media path module is used to carry out the cleaning action, and the execution module is used to control the cleaning action of the media path module.

2. The pneumatically actuated automated pulse cleaning control system according to claim 1, characterized in that, The media path module includes a buffer tank (32) which is connected to a water source and provides liquid medium to the pulse generator through the water pump (11).

3. The pneumatically actuated automated pulse cleaning control system according to claim 2, characterized in that, The buffer tank (32) is connected to a dosing device (33), and a dosing metering pump (34) is provided between the buffer tank (32) and the dosing device (33).

4. The pneumatically actuated automated pulse cleaning control system according to claim 3, characterized in that, The media path module includes a cleaning inlet pipe (35) and a cleaning return pipe (36) for the inlet and outlet of water to the cleaning target (50). The cleaning inlet pipe (35) is connected to the output end of the pulse generator, and the cleaning return pipe (36) is connected to the buffer tank (32) so that a circulation loop is formed between the buffer tank (32) and the cleaning target (50).

5. The pneumatically actuated automated pulse cleaning control system according to claim 4, characterized in that, The pneumatic valve includes a first multi-way valve (23) and a second multi-way valve (24). The first multi-way valve (23) is located on the cleaning inlet pipe (35) and connected to the second multi-way valve (24). The second multi-way valve (24) is located on the cleaning return pipe (36) and connected to the buffer tank (32) and the drain pipe (37) respectively.

6. The pneumatically actuated automated pulse cleaning control system according to claim 5, characterized in that, The buffer tank (32) is connected to the drain pipe (37) through the overflow pipe (38), and a neutralization tank is provided on the drain pipe (37).

7. The pneumatically actuated automated pulse cleaning control system according to claim 4, characterized in that, The control system also includes an information acquisition module, which includes a pH sensor (41) and a pressure sensor (42). The pH sensor (41) and the pressure sensor (42) are installed on both the cleaning inlet pipe (35) and the cleaning return pipe (36). The information acquisition module is used to detect the cleaning effect.

8. The pneumatically actuated automated pulse cleaning control system according to claim 1, characterized in that, The pulse generator includes a mixer (31) and a pneumatically operable pulse valve (22). The pulse valve (22) is connected to the gas storage tank (12) through the pilot valve island (21) to achieve pneumatic opening and closing. The two input ends of the mixer (31) are respectively connected to the pulse valve (22) and the water pump (11).

9. The pneumatically actuated automated pulse cleaning control system according to any one of claims 1-8, characterized in that, The execution module also includes a pneumatic electric valve (25), which is located between the gas storage tank (12) and the pulse generator.

10. The pneumatically actuated automated pulse cleaning control system according to any one of claims 1-8, characterized in that, A buffer gas tank (13) is provided between the pilot valve island (21) and the gas storage tank (12).

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