CN220707049U - Flow control system with energy-saving compressed air - Google Patents
Flow control system with energy-saving compressed air Download PDFInfo
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- CN220707049U CN220707049U CN202322237037.3U CN202322237037U CN220707049U CN 220707049 U CN220707049 U CN 220707049U CN 202322237037 U CN202322237037 U CN 202322237037U CN 220707049 U CN220707049 U CN 220707049U
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- 238000005265 energy consumption Methods 0.000 description 6
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Abstract
The utility model discloses a flow control system with energy-saving compressed air, which comprises a flow control device and a plurality of air tanks connected between the output end and the air utilization end of an air compressor unit for generating air, wherein the air compressor unit is connected with the flow control device through a group control signal transmission line, each air tank is mutually and serially connected and communicated through a communicating pipe, the output end of the air compressor unit is communicated with the input end of a first air tank through a gas pipe main pipe, the output end of a last air tank is communicated with the inlet side of the air utilization end, the flow control device comprises a microcontroller, and a pressure sensor and a flow sensor which are arranged on the communication pipeline of the output end of the last air tank, the pressure sensor and the flow sensor are electrically connected with the microcontroller, and the microcontroller is electrically connected with each air compressor unit through a frequency converter. The utility model can control the air pressure and flow according to the actual production requirement, and reduce the pressure fluctuation.
Description
Technical Field
The utility model relates to the technical field of compressed air and energy conservation, in particular to a flow control system with energy-saving compressed air.
Background
Compressed air is an extremely inefficient energy source, and the energy consumption costs account for 85% of the total cost of the user (TCO) during the life cycle of the air compressor. According to measurement and calculation, about 6kw of electric energy is required for generating 1m3/min (0.8 Mpa) of gas; currently, in a compressed air system of a thermal power plant, only one air compression station is used for compressing air in a gas utilization workshop, and the provided compressed air also has only one pressure, and in actual production, a plurality of pressure requirements exist, for example: the actual pressure required by the instrument gas, the dust removing gas and the impurity gas is different, and according to the previous experience, the pressure controller (the pressure reducing valve) is used for solving the pressure dividing problem, and the pressure dividing mode has high energy consumption and cannot solve the pressure fluctuation problem, so that the pressure dividing method is not the best solution and the final purpose of energy conservation is difficult to achieve.
Disclosure of Invention
The utility model aims to provide a flow control system with energy-saving compressed air, which can control air pressure and flow according to actual production requirements and reduce pressure fluctuation. In order to achieve the above purpose, the present utility model adopts the following technical effects:
according to one aspect of the present utility model, there is provided a flow control system with energy-saving compressed air, the flow control system including a flow control device, a plurality of air tanks connected between an output end and an air end of an air compressor unit for generating air, the air compressor unit being in serial cascade connection with each other through a group control signal transmission line with the flow control device, each air tank being in serial connection with each other through a communication pipe, an output end of the air compressor unit being in communication with an input end of a first air tank through a gas pipe header pipe, an output end of a last air tank being in communication with an inlet side of the air end, the flow control device including a microcontroller, and a pressure sensor and a flow sensor mounted on an output end communication pipe of the last air tank, the pressure sensor and the flow sensor being electrically connected with the microcontroller, the microcontroller being electrically connected with each air compressor unit through a frequency converter.
The above scheme is further preferable, the air compressor unit is composed of two or more than three compressors, the output ends of each compressor are connected in parallel, a first frequency converter and a second frequency converter are arranged on each air compressor, a pressure control valve is arranged at the output end of each air compressor, each air compressor is electrically connected with the microcontroller through the first frequency converter, the microcontroller is electrically connected with the pressure control valve through the second frequency converter, and the pressure output end of the pressure control valve is connected with the pressure acquisition end of the microcontroller.
In the above scheme, preferably, a contactor is further disposed between the output end of the first frequency converter and each air compressor, and the output end of the first frequency converter is electrically connected with the air compressors through the contactor.
In the above scheme, it is further preferable that a reactor is connected to the power input of the first frequency converter and the power input of the second frequency converter.
In a further preferred embodiment of the foregoing, the flow control device further includes a touch display screen, and the touch display screen is connected to the microcontroller.
The above-mentioned scheme is further preferable that a bypass gas transmission pipeline is connected in parallel on a communicating pipe between an inlet side and an outlet side of the gas use end, a bypass control valve is arranged on the bypass gas transmission pipeline, the bypass control valve is connected with the microcontroller, and service valves are respectively arranged between the inlet side of the bypass gas transmission pipeline and the inlet side of the gas use end and between the outlet side of the gas use end of the bypass gas transmission pipeline.
In the above aspect, it is further preferable that a check valve and a dry filter are respectively provided at the communicating pipe near the inlet end of each air tank.
In summary, the utility model adopts the technical scheme, and has the following technical effects:
the flow control system can control air pressure and flow according to actual production requirements, reduces pressure fluctuation, and shows that an air supply end (an air compressor unit) can meet fluctuation of the air demand without waste at all times, so that energy consumption of the system is reduced. The pressure stability is realized by controlling the flow output of the compressor unit, and the balance of air flow overflow and force is achieved, so that the energy consumption of the air compressor unit is reduced, and the purpose of saving energy is realized.
Drawings
FIG. 1 is a system schematic diagram of a flow control system with energy efficient compressed air according to the present utility model;
FIG. 2 is a control schematic of the flow control device of the present utility model;
in the drawing, a flow control device 1, an air compressor unit 2, an air end 3, an air storage tank 4, a one-way valve 5, a dry filter 6, a microcontroller 10, a pressure sensor 11, a flow sensor 12, a touch display screen 13, a compressor 20, a pressure control valve 21, a bypass air delivery pipeline 31, a bypass control valve 32 and an overhaul valve 33 are arranged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail below by referring to the accompanying drawings and by illustrating preferred embodiments. It should be noted, however, that many of the details set forth in the description are merely provided to provide a thorough understanding of one or more aspects of the utility model, and that these aspects of the utility model may be practiced without these specific details.
Referring to fig. 1 and 2, a flow control system with energy-saving compressed air according to the present utility model is characterized in that: the flow control system comprises a flow control device 1 and a plurality of air tanks 4 connected between the output end of an air compressor unit 2 for producing air and an air utilization end 3, wherein the air compressor unit 2 is electrically connected with the flow control device 1 through a group control signal transmission line, each air tank 4 is mutually and serially connected and communicated through a communicating pipe, the output end of the air compressor unit 2 is communicated with the input end of a first air tank 3 through a gas pipe main pipe, the output end of a last air tank 4 is communicated with the inlet side of the air utilization end 3, the flow control device 1 comprises a microcontroller 10, a pressure sensor 11, a flow sensor 12 and a touch display screen 13 which are arranged on the communicating pipe of the output end of the last air tank 4, the pressure sensor 11 and the flow sensor 12 are electrically connected with the microcontroller 10, the microcontroller 10 is electrically connected with each air compressor unit 2 through a frequency converter 11, the pressure sensor 11 and the flow sensor 12 detect the pressure and the flow of compressed air output by the last air tank 4, the loading and unloading conditions of the air compressor unit 2 are controlled according to the pressure and the flow, and the running efficiency of the air compressor unit 1 is improved, and the energy saving purpose is achieved. The touch display screen 13 is connected with the microcontroller 10, and is used for setting and displaying corresponding parameters, and a one-way valve 5 and a dry filter 6 are respectively arranged on a communicating pipe close to the inlet end of each air storage tank 4, so that the air generated by the air conditioning unit 2 is filtered, and the water vapor and the oil vapor in the air are removed.
In the present utility model, as shown in fig. 1 and 2, the air compressor unit 2 is composed of two or more than three compressors 20, the output ends of each compressor are connected in parallel, a first frequency converter and a second frequency converter are provided on each air compressor 20, a pressure control valve 21 is provided on the output end of each air compressor 1, each air compressor 20 is electrically connected with the microcontroller 10 through the first frequency converter, the microcontroller 10 is electrically connected with the pressure control valve 21 through the second frequency converter, and the pressure output end of the pressure control valve 21 is connected with the pressure acquisition end of the microcontroller 10; the air pressure output by the pressure control valve 21 is transmitted to the microcontroller 10, a frequency modulation signal is output to the first frequency converter according to the pressure, the frequency of the first frequency converter is regulated, and the motor rotating speed of the air compressor unit 2 is automatically controlled so as to control the steam supply of the air compressor 20; the output pressure of the compressed air generated by the air compressor 20 is detected through the pressure control valve 3, and the air flow output pressure is regulated by the second frequency converter according to the output pressure value, so that the unloading or loading operation condition of the air compressor 1 is controlled, and the operation efficiency of the air compressor 20 is improved.
In the embodiment of the present utility model, as shown in fig. 1 and fig. 2, a contactor is further disposed between the output end of the first frequency converter and each air compressor 20, and the output end of the first frequency converter is electrically connected to the air compressors through the contactor, in the embodiment of the present utility model, a reactor is connected to the power input of the first frequency converter and the power input end of the second frequency converter, and the reactor is a three-phase filter reactor; when the first frequency converter and the second frequency converter are subjected to frequency change control, a large amount of harmonic current is generated, the harmonic current causes the power factor of the commercial power network to be reduced, the frequency conversion electricity-saving rate is greatly reduced, and therefore the harmonic current is filtered through the reactor, harmonic interference is reduced, and the energy-saving effect is achieved.
In the embodiment of the present utility model, as shown in fig. 1 and 2, a bypass gas transmission pipe 31 is connected in parallel to a communication pipe between an inlet side and an outlet side of the gas use end 3, a bypass control valve 32 is provided to the bypass gas transmission pipe 31, the bypass control valve 32 is connected to the microcontroller 10, and an inspection valve 33 is provided between the inlet end of the bypass gas transmission pipe 31 and the inlet side of the gas use end 3 and between the outlet side of the gas use end 3 of the bypass gas transmission pipe 31; when the compressed air flow rate of the air utilization end 3 is increased or reduced, the pressure of the air utilization end 3 fluctuates within the range of +/-1 Psi, and when pneumatic or electric control faults occur, the microcontroller 10 of the flow control device 1 controls the bypass control valve 32 to be opened so as to realize continuous air supply production, and by manually closing the overhaul valve 33, the compressed air system can be maintained and serviced without stopping the machine, and the air utilization end 3 can be maintained. When the pressure drop change of the gas end exceeds the output pressure limit value, the bypass control valve 32 is automatically opened, and the compressed air is output through the full flow rate of the bypass control valve 32, so that the gas flow requirement of a gas utilization workshop is ensured. Once the output pressure limit is met by the gas end pressure change, the bypass control valve 32 is automatically closed, and the gas end flow output is controlled again. When the air compressor unit 1 is used as an air generating end and the redundant flow formed by responding to illusions is stored in the air storage tank 4, the time for loading operation of the air compressor unit 1 is shortened (a general regulation mode) or the rotating speed is reduced (a variable frequency regulation mode), so that the energy consumption caused by illusion demands is reduced, the microcontroller 10 of the flow control device 1 detects the air pressure of the air storage tank 4 at the last stage through the pressure sensor 11, then the air compressor unit 1 is regulated to load or unload, and the flow sensor 12 detects the air consumption, the overpressure and the stable control of the flow are realized, the compressed air is conveyed to the air using end 3 according to the optimized pressure and flow and reaches an air using workshop, the air consumption of various air using points such as pneumatic equipment, pneumatic tools, leakage and the like is reduced, and the energy consumption of the air compressor unit is reduced, and the purpose of saving energy is realized.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (7)
1. A flow control system with energy-saving compressed air, characterized in that: the flow control system comprises a flow control device and a plurality of air tanks connected between the output end of an air compressor unit for producing air and an air end, wherein the air compressor unit is connected with the flow control device through a group control signal transmission line, each air tank is mutually and serially connected and communicated through a communicating pipe, the output end of the air compressor unit is communicated with the input end of a first air tank through a gas pipe main pipe, the output end of a last air tank is communicated with the inlet side of the air end, the flow control device comprises a microcontroller, and a pressure sensor and a flow sensor which are arranged on a communication pipeline of the output end of the last air tank, the pressure sensor and the flow sensor are electrically connected with the microcontroller, and the microcontroller is electrically connected with each air compressor unit through a frequency converter.
2. A flow control system with energy efficient compressed air according to claim 1, wherein: the air compressor unit is composed of two or more than three compressors, the output ends of each compressor are connected in parallel, a first frequency converter and a second frequency converter are arranged on each air compressor, a pressure control valve is arranged at the output end of each air compressor, each air compressor is electrically connected with the microcontroller through the first frequency converter, the microcontroller is electrically connected with the pressure control valve through the second frequency converter, and the pressure output end of the pressure control valve is connected with the pressure acquisition end of the microcontroller.
3. A flow control system with energy efficient compressed air according to claim 2, wherein: and a contactor is further arranged between the output end of the first frequency converter and each air compressor, and the output end of the first frequency converter is electrically connected with the air compressors through the contactor.
4. A flow control system with energy efficient compressed air according to claim 2 or 3, wherein: and the power input end of the first frequency converter and the power input end of the second frequency converter are connected with a reactor.
5. A flow control system with energy efficient compressed air according to claim 1, wherein: the flow control device also comprises a touch display screen which is connected with the microcontroller.
6. A flow control system with energy efficient compressed air according to claim 1, wherein: a bypass gas transmission pipeline is connected in parallel on a communicating pipe between the inlet side and the outlet side of the gas utilization end, a bypass control valve is arranged on the bypass gas transmission pipeline and is connected with the microcontroller, and an overhaul valve is respectively arranged between the inlet side of the bypass gas transmission pipeline and the inlet side of the gas utilization end and between the outlet side of the gas utilization end of the bypass gas transmission pipeline and the outlet side of the gas utilization end of the outlet end of the bypass gas transmission pipeline.
7. A flow control system with energy efficient compressed air according to claim 1, wherein: a one-way valve and a dry filter are respectively arranged on the communicating pipe near the inlet end of each air storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322237037.3U CN220707049U (en) | 2023-08-18 | 2023-08-18 | Flow control system with energy-saving compressed air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322237037.3U CN220707049U (en) | 2023-08-18 | 2023-08-18 | Flow control system with energy-saving compressed air |
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| Publication Number | Publication Date |
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| CN220707049U true CN220707049U (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322237037.3U Active CN220707049U (en) | 2023-08-18 | 2023-08-18 | Flow control system with energy-saving compressed air |
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| CN (1) | CN220707049U (en) |
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2023
- 2023-08-18 CN CN202322237037.3U patent/CN220707049U/en active Active
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