CN111486263A - Release valve control device, control method and magnetic suspension centrifugal blower - Google Patents
Release valve control device, control method and magnetic suspension centrifugal blower Download PDFInfo
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- CN111486263A CN111486263A CN202010228001.7A CN202010228001A CN111486263A CN 111486263 A CN111486263 A CN 111486263A CN 202010228001 A CN202010228001 A CN 202010228001A CN 111486263 A CN111486263 A CN 111486263A
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- power supply
- rotating speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0253—Surge control by throttling
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The application relates to a release valve control device, a control method and a magnetic suspension centrifugal blower system, wherein the device comprises an electromagnetic valve and a release valve; the device also comprises a power supply detection module connected with the air blower, a rotating speed detection module connected with the air blower, and control equipment respectively connected with the power supply detection module, the rotating speed detection module and the electromagnetic valve. The control equipment processes the received power supply data and the received rotating speed data and controls the electromagnetic valve to be closed when the power supply data falls into the range of the power supply threshold value and the rotating speed data is greater than or equal to the rotating speed threshold value according to the processing result; when the power data is zero, the control equipment controls the electromagnetic valve to be opened, and the on-off of the electromagnetic valve is accurately controlled. According to the electromagnetic valve on-off control method and device, the power supply and the rotating speed data of the air blower are detected and processed in real time, the on-off of the electromagnetic valve is controlled in time according to the processing result, the accuracy of on-off control of the electromagnetic valve is improved, the time delay of opening and closing of the release valve control valve is shortened, and surging of the magnetic suspension centrifugal air blower is avoided.
Description
Technical Field
The application relates to the technical field of magnetic suspension blowers, in particular to a release valve control device, a control method and a magnetic suspension centrifugal blower.
Background
The magnetic suspension blower can provide air for a sewage biochemical system and provide dissolved oxygen required by activated sludge microorganisms so as to ensure the oxygen demand in the microbial metabolic process. When the magnetic suspension blower starts or stops running, the rotation of the main shaft cannot reach a stable state, and surging is easily generated in the magnetic suspension blower. The release valve can be applied to the magnetic suspension blower, and the pressure difference of the air flow is utilized to control the opening or closing of the valve of the release valve, so that the pressure difference between the inside and the outside of the magnetic suspension blower is adjusted, and the magnetic suspension blower is in the optimal operation condition.
At present, a relief valve controlled by the pressure difference of air flow is generally provided with an air inlet, an air outlet and an air leakage opening; the air inlet, the air outlet, the diaphragm and the shell are combined to form an air outlet cavity; the diaphragm, the air release opening and the shell are combined to form an air release cavity. Usually, an electromagnetic valve is arranged at the air release port, and the size of the air release chamber is controlled by controlling the on-off of the electromagnetic valve, so as to control the on-off of the valve. Therefore, it is particularly important to control the on/off time of the solenoid valve.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: when the traditional release valve is used for controlling the opening and closing of the valve, time delay exists, and the on-off control time error of the electromagnetic valve is large.
Disclosure of Invention
Therefore, it is necessary to provide a release valve control device, a control method and a magnetic suspension centrifugal blower for solving the problems of time delay and large error of on-off control time of an electromagnetic valve when the traditional release valve controls the opening and closing of the valve.
In order to achieve the above object, an embodiment of the present invention provides a release valve control apparatus, including a solenoid valve and a release valve; the air inlet of the release valve is used for being communicated with the air outlet of the blower; the air release hole of the release valve is used for being mechanically connected with the electromagnetic valve; further comprising:
the power supply detection module is connected with the air blower; the power supply detection module is used for detecting power supply data of the air blower;
the rotating speed detection module is connected with the air blower; the rotating speed detection module is used for detecting rotating speed data of the air blower;
the control equipment is respectively and electrically connected with the power supply detection module, the rotating speed detection module and the electromagnetic valve; the control equipment receives power supply data transmitted by the power supply detection module and rotating speed data transmitted by the rotating speed detection module;
the control equipment processes the power supply data and the rotating speed data, and controls the electromagnetic valve to be closed when the power supply data falls into the range of the power supply threshold value and the rotating speed data is greater than or equal to the rotating speed threshold value according to the processing result; and when the power supply data is zero, the control equipment controls the electromagnetic valve to be opened.
In one embodiment, when the blower is powered on and started, the control equipment is triggered to be powered on and started;
when the control equipment is electrified and started, the electromagnetic valve is controlled to be opened.
In one embodiment, the control device comprises a power switching module and a processor;
the control end of the power supply switching module is connected with the processor, the input end of the power supply switching module is connected with the electromagnetic valve, and the output end of the power supply switching module is connected with the power supply.
In one embodiment, the power switching module is a relay.
In one embodiment, the power supply switching module is connected between the power supply and the power supply switching module.
In one embodiment, the solenoid valve is a 24V solenoid valve.
In one embodiment, the power detection module includes a voltage sensor coupled to the control device.
In another aspect, an embodiment of the present invention further provides a release valve control method, including the following steps:
respectively receiving power supply data transmitted by a power supply detection module and rotating speed data transmitted by a rotating speed detection module;
processing the power supply data and the rotating speed data, and controlling the electromagnetic valve to be closed when the power supply data falls into the range of the power supply threshold value and the rotating speed data is greater than or equal to the rotating speed threshold value according to the processing result;
and when the power supply data is zero, the electromagnetic valve is controlled to be opened.
In one embodiment, the relief valve control method further comprises the steps of:
when the blower is electrified and started, the control electromagnetic valve is opened.
On the other hand, the embodiment of the invention also provides a magnetic suspension centrifugal blower, which comprises a blower and a release valve control device of any one of the above parts;
the release valve control device is communicated with an air outlet of the blower.
One of the above technical solutions has the following advantages and beneficial effects:
in each embodiment of the release valve control device, the air inlet based on the release valve is communicated with the air outlet of the blower; the air release hole of the release valve is mechanically connected with the electromagnetic valve; the power supply detection module is connected with the blower; the rotating speed detection module is connected with the blower; the control equipment is respectively and electrically connected with the power supply detection module, the rotating speed detection module and the electromagnetic valve; the power supply detection module is used for carrying out power supply detection on the air blower and transmitting power supply data obtained by detection to the control equipment; the rotating speed detection module is used for detecting the rotating speed of the air blower and transmitting the detected rotating speed data to the control equipment; the control equipment processes the received power supply data and the rotating speed data transmitted by the rotating speed detection module, and controls the electromagnetic valve to be closed when the power supply data falls into the range of the power supply threshold value and the rotating speed data is greater than or equal to the rotating speed threshold value according to the processing result; when the power data is zero, the control electromagnetic valve is opened, so that the on-off of the electromagnetic valve can be accurately controlled, and the valve of the release valve can be opened and closed in time. According to the magnetic suspension centrifugal blower surge prevention device, real-time detection processing is carried out on power data and rotating speed data of the blower, and the on-off of the electromagnetic valve is controlled in time according to a processing result, so that the accuracy of on-off control of the electromagnetic valve is improved, the time delay of opening and closing of the release valve control valve is shortened, and the magnetic suspension centrifugal blower is prevented from surging.
Drawings
FIG. 1 is a schematic view of a first construction of a release valve control apparatus according to an embodiment;
FIG. 2 is a second schematic view of a release valve control apparatus according to an embodiment;
FIG. 3 is a schematic view of a third construction of a release valve control apparatus according to an embodiment;
FIG. 4 is a schematic flow diagram of a relief valve control method according to one embodiment;
fig. 5 is a schematic structural diagram of a magnetic levitation centrifugal blower in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, as shown in fig. 1, there is provided a release valve control apparatus including a solenoid valve 110 and a release valve 120; the air inlet of the release valve 120 is used for being communicated with the air outlet of the blower; the relief hole of the relief valve 120 is used for mechanical connection with the solenoid valve 110; further comprising:
the power supply detection module 130, the power supply detection module 130 is connected with the blower; the power detection module 130 is used for detecting power data of the blower;
the rotating speed detection module 140, the rotating speed detection module 140 is connected with the blower; the rotating speed detection module 140 is used for detecting rotating speed data of the blower;
the control device 150, the control device 150 is electrically connected to the power detection module 130, the rotation speed detection module 140 and the electromagnetic valve 110 respectively; the control device 150 receives the power data transmitted by the power detection module 130 and the rotating speed data transmitted by the rotating speed detection module 140;
the control device 150 processes the power data and the rotating speed data, and controls the electromagnetic valve 110 to close when the power data falls into the power threshold range and the rotating speed data is greater than or equal to the rotating speed threshold according to the processing result; the control device 150 controls the electromagnetic valve 110 to open when the power data is zero.
Specifically, the solenoid valve 110 may be, but is not limited to, a direct acting solenoid valve, a distributed direct acting solenoid valve, or a pilot operated solenoid valve. When the electromagnetic valve 110 is electrified, the valve is opened; when the solenoid valve 110 is de-energized, the valve closes. The relief valve 120 refers to a relief valve controlled by a pressure difference of air flow. The power detection module 130 may be used to detect power data of the blower. In one example, the power detection module 130 may be a voltage detection module; the voltage detection module may be used to detect voltage data of the blower. The speed detection module 140 may be configured to detect speed data of the blower. In one example, the speed detection module 140 may be disposed proximate to a main shaft of the blower, and perform speed detection on the main shaft of the blower to obtain speed data. The control device 150 is operable to perform data processing on the power supply data and the rotational speed data; the control device 150 may also be used to control the on-off of the solenoid valve 110.
Further, the power detection module 130 may perform power detection on the blower, and transmit power data obtained by the power detection to the control device 150; the rotation speed detection module 140 may perform rotation speed detection on the blower and transmit the detected rotation speed data to the control device 150; the control device 150 processes the received power data and the rotational speed data transmitted by the rotational speed detection module 140, and controls the electromagnetic valve 110 to close when the power data falls within the power threshold range and the rotational speed data is greater than or equal to the rotational speed threshold according to the processing result; when the power data is zero, the electromagnetic valve 110 is controlled to be opened, so that the on-off of the electromagnetic valve 110 is accurately controlled, and the valve of the release valve 120 is opened and closed in time.
In one example, the relief valve may include a valve housing, a valve cover, a valve, an airflow directing lever, and a spring. The valve shell is provided with a cavity, an exhaust port, an air inlet used for communicating with an air outlet of the blower and a connecting port opposite to the air inlet; the outlet direction of the exhaust port is vertical to the inlet direction of the air inlet; the valve cover is combined with the connecting port through a diaphragm; the diaphragm is provided with a first through hole; the valve cover is provided with an air release hole; the air leakage hole is used for installing an electromagnetic valve; the electromagnetic valve is used for opening and closing the air release hole; the valve is arranged in the cavity; the valve is used for opening and closing the air inlet; the valve is provided with a second through hole; the first end of the airflow guide rod penetrates through the second through hole and is locked with the valve; the second end of the airflow guide rod passes through the first through hole and is locked with the diaphragm; the spring is sleeved on the airflow guide rod and is positioned between the valve and the diaphragm.
Furthermore, an air inlet, an air outlet, a diaphragm and a valve shell of the release valve are combined to form an air exhaust cavity; the diaphragm, the air release opening and the valve cover are combined to form an air release cavity. The solenoid valve sets up in the department that bleeds, and controlgear controls the volume size of air release chamber through the break-make of control solenoid valve, and then the opening and close of control flap.
In the embodiment of the release valve control device, the power supply data and the rotating speed data of the air blower are detected and processed in real time, and the on-off of the electromagnetic valve is controlled in time according to the processing result, so that the accuracy of on-off control of the electromagnetic valve is improved, the time delay of opening and closing of the release valve control valve is shortened, and the magnetic suspension centrifugal air blower is prevented from surging.
In a specific embodiment, when the blower is powered on and started, the control equipment is triggered to be powered on and started; when the control equipment is electrified and started, the electromagnetic valve is controlled to be opened.
Specifically, the control device is electrically connected based on the blower, and when the blower is powered on and started, the trigger control device is also powered on and started. When the control equipment is powered on and started, the electromagnetic valve is initialized, the electromagnetic valve is controlled to be opened, and then the air flow of the pressure cavity can be discharged through the air leakage port, so that when the pressure of the air flow of the air inlet is greater than atmospheric pressure, the valve of the release valve can be opened, the air flow is discharged in an auxiliary mode through the release valve in the early stage of starting of the air blower, and surging of the magnetic suspension centrifugal air blower is prevented.
In the above embodiment, when the blower is powered on and started, the control device is triggered to be powered on and started, and then the control device directly controls the electromagnetic valve to be opened, so that the electromagnetic valve is controlled to be opened in time, and therefore the valve of the release valve can be opened in time according to the thrust of the air flow, the accuracy of on-off control of the electromagnetic valve is improved, and the time delay of opening and closing of the valve controlled by the release valve is shortened.
In one embodiment, as shown in fig. 2, there is provided a release valve control apparatus comprising a solenoid valve 210 and a release valve 220; the air inlet of the release valve 220 is used for being communicated with the air outlet of the blower; the air release hole of the release valve 220 is used for mechanically connecting with the solenoid valve 210; the device further comprises a power detection module 230 connected with the air blower, a rotating speed detection module 240 connected with the air blower, and a control device 250 electrically connected with the power detection module 230, the rotating speed detection module 240 and the electromagnetic valve 210 respectively.
Specifically, the power switching module 252 may be configured to switch the power supply to the solenoid valve 210. The processor 254 may be, but is not limited to, a single chip, a DSP processor, or an ARM processor.
In one example, the power switching module 252 is a relay.
Further, the power detection module 230 may perform power detection on the blower and transmit power data obtained by the detection to the processor; the rotation speed detection module 240 may perform rotation speed detection on the blower and transmit the detected rotation speed data to the processor 254; the processor 254 processes the received power data and the rotational speed data transmitted by the rotational speed detection module, and controls the power switching module 252 to operate according to the processing result when the power data falls within the power threshold range and the rotational speed data is greater than or equal to the rotational speed threshold, so that the power switching module 252 disconnects the channel between the electromagnetic valve 210 and the power supply, and the electromagnetic valve 210 is powered off, thereby closing the electromagnetic valve 210; when the power data is zero, the power switching module 252 is controlled to operate, so that the power switching module 252 opens a channel between the electromagnetic valve 210 and a power supply, the electromagnetic valve 210 is powered on, the electromagnetic valve 210 is opened, the on-off of the electromagnetic valve 210 is accurately controlled, and the valve of the release valve 220 is opened and closed in time.
In the embodiment, the power supply data and the rotating speed data of the air blower are detected and processed in real time, and the on-off of the electromagnetic valve is controlled by the power supply switching module in time according to the processing result, so that the accuracy of on-off control of the electromagnetic valve is improved, the time delay of opening and closing of the release valve control valve is shortened, and the magnetic suspension centrifugal air blower is prevented from surging.
In one embodiment, as shown in FIG. 3, a release valve control apparatus is provided, the apparatus comprising a solenoid valve 310 and a release valve 320; the air inlet of the release valve 320 is used for being communicated with the air outlet of the blower; the air release hole of the release valve 320 is used for mechanically connecting with the electromagnetic valve 310; the device further comprises a power detection module 330 connected with the air blower, a rotating speed detection module 340 connected with the air blower, and a control device 350 electrically connected with the power detection module 330, the rotating speed detection module 340 and the electromagnetic valve 310 respectively. The control device 350 includes a power switching module 352 and a processor 354. The control end of the power switching module 352 is connected to the processor 354, the input end is connected to the solenoid valve 310, and the output end is used for connecting to a power supply.
Wherein. The apparatus also includes a power conversion module 360 connected between the power supply and the power switching module 352.
Specifically, the power conversion module 360 can be used to convert the power supply to obtain a power supply that meets the operating conditions of the solenoid valve 310.
Further, the power-based conversion module 360 is connected between the power supply and the power switching module 352; the power supply switching module 352 is connected with the electromagnetic valve 310; the processor 354 is connected to the power switching module 352, and when the power data falls within the power threshold range and the rotation speed data is greater than or equal to the rotation speed threshold, the processor 354 controls the power switching module 352 to operate, so that the power switching module 352 disconnects the channel between the solenoid valve 310 and the power conversion module 360, and the solenoid valve 310 is powered off, thereby closing the solenoid valve 310; when the power data is zero, the power switching module 352 is controlled to work, so that the power switching module 352 opens a channel between the electromagnetic valve 310 and a power supply, the power switching module 360 converts the power supply, and transmits the converted power signal to the electromagnetic valve 310, so that the electromagnetic valve 310 is powered on, the electromagnetic valve 310 is opened, the on-off of the electromagnetic valve 310 is accurately controlled, and the valve of the release valve 320 is opened and closed in time.
It should be noted that, if the power signal output by the power supply is an ac signal, the power conversion module may be an ac-to-dc module; if the power signal output by the power supply is a direct current signal, the power conversion module may be a direct current to direct current module.
In one example, the solenoid valve is a 24V solenoid valve.
In a particular embodiment, the power detection module includes a voltage sensor coupled to the control device.
The voltage sensor may be, but is not limited to, a voltage transformer, a hall voltage sensor, or a fiber optic voltage sensor.
In particular, a voltage sensor may be used to measure power supply data for the blower, and in one example, the voltage sensor may be used to measure an input voltage of a motor of the blower. The control device is connected with the control device based on the voltage sensor, the voltage sensor can transmit power supply data obtained through measurement to the control device, the control device can process the received power supply data, and when the power supply data fall into a power supply threshold range, the blower is judged to be started to work; and when the power supply data is zero, judging that the blower is powered off and stopped.
In the embodiment, the power supply data and the rotating speed data of the air blower are detected and processed in real time, and the on-off of the electromagnetic valve is controlled in time according to the processing result, so that the accuracy of on-off control of the electromagnetic valve is improved, the time delay of controlling the opening and closing of the valve by the release valve is shortened, and the surging of the magnetic suspension centrifugal air blower is avoided.
In one embodiment, as shown in fig. 4, there is also provided a relief valve control method comprising the steps of:
step S410, respectively receiving the power data transmitted by the power detection module and the rotational speed data transmitted by the rotational speed detection module.
And step S420, processing the power supply data and the rotating speed data, and controlling the electromagnetic valve to be closed when the power supply data falls into the range of the power supply threshold value and the rotating speed data is greater than or equal to the rotating speed threshold value according to the processing result.
And step S430, when the power supply data is zero, controlling the electromagnetic valve to be opened.
Specifically, the control device can respectively receive power data transmitted by the power detection module and rotation speed data transmitted by the rotation speed detection module, process the received power data and the rotation speed data transmitted by the rotation speed detection module, and control the electromagnetic valve to close when the power data falls into the range of the power threshold and the rotation speed data is greater than or equal to the rotation speed threshold according to the processing result; when the power data is zero, the control electromagnetic valve is opened, so that the on-off of the electromagnetic valve can be accurately controlled, and the valve of the release valve can be opened and closed in time.
In the embodiment, the power supply data and the rotating speed data of the air blower are detected and processed in real time, and the on-off of the electromagnetic valve is controlled in time according to the processing result, so that the accuracy of on-off control of the electromagnetic valve is improved, the time delay of opening and closing of the release valve control valve is shortened, and surging of the magnetic suspension centrifugal air blower is avoided.
In a particular embodiment, the relief valve control method further comprises the steps of:
when the blower is electrified and started, the control electromagnetic valve is opened.
Specifically, when the blower is powered on and started, the direct trigger control device is also powered on and started. When the control equipment is powered on and started, the electromagnetic valve is initialized, the electromagnetic valve is controlled to be opened, and then the air flow of the pressure cavity can be discharged through the air leakage port, so that when the pressure of the air flow of the air inlet is greater than atmospheric pressure, the valve of the release valve can be opened, the air flow is discharged in an auxiliary mode through the release valve in the early stage of starting of the air blower, and surging of the magnetic suspension centrifugal air blower is prevented.
It should be understood that, although the steps in the flowchart of fig. 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is also provided a magnetic levitation centrifugal blower comprising a blower 510, and a release valve control 520 as described above.
The release valve control device 520 is connected to the air outlet of the blower 510.
Wherein the blower 510 refers to a magnetic levitation centrifugal blower body. The release valve control means 520 includes a solenoid valve and a release valve; the air inlet of the release valve is used for being communicated with the air outlet of the blower 510; the air release hole of the release valve is used for being mechanically connected with the electromagnetic valve; the release valve control device 520 further includes a power detection module connected to the blower 510, a rotation speed detection module connected to the blower 510, and a control device electrically connected to the blower, the power switching module, and the solenoid valve, respectively.
Specifically, the power supply detection module can be used for carrying out power supply detection on the air blower and transmitting power supply data obtained by detection to the control equipment; the rotating speed detection module can detect the rotating speed of the blower 510 and transmit the detected rotating speed data to the control equipment; the control equipment processes the received power supply data and the rotating speed data transmitted by the rotating speed detection module, and controls the electromagnetic valve to be closed when the power supply data falls into the range of the power supply threshold value and the rotating speed data is greater than or equal to the rotating speed threshold value according to the processing result; when the power data is zero, the control electromagnetic valve is opened, so that the on-off of the electromagnetic valve can be accurately controlled, and the valve of the release valve can be opened and closed in time. The power supply data and the rotating speed data of the air blower 510 are detected and processed in real time, and the on-off of the electromagnetic valve is controlled in time according to the processing result, so that the accuracy of on-off control of the electromagnetic valve is improved, the time delay of opening and closing of the release valve control valve is shortened, and surging of the magnetic suspension centrifugal air blower is avoided.
It will be understood by those of ordinary skill in the art that all or a portion of the processes of the methods of the embodiments described above may be implemented by instructions associated with hardware via a computer program that may be stored on a non-volatile computer-readable storage medium, which when executed, may include processes such as those of the embodiments of the methods of division.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A release valve control device is characterized by comprising an electromagnetic valve and a release valve; the air inlet of the release valve is used for being communicated with the air outlet of the blower; the air release hole of the release valve is used for being mechanically connected with the electromagnetic valve; further comprising:
the power supply detection module is connected with the air blower; the power supply detection module is used for detecting power supply data of the blower;
the rotating speed detection module is connected with the air blower; the rotating speed detection module is used for detecting rotating speed data of the blower;
the control equipment is respectively and electrically connected with the power supply detection module, the rotating speed detection module and the electromagnetic valve; the control equipment receives the power supply data transmitted by the power supply detection module and the rotating speed data transmitted by the rotating speed detection module;
the control equipment processes the power supply data and the rotating speed data, and controls the electromagnetic valve to be closed when the power supply data falls into a power supply threshold range and the rotating speed data is larger than or equal to a rotating speed threshold according to a processing result; and the control equipment controls the electromagnetic valve to be opened when the power supply data is zero.
2. The release valve control apparatus of claim 1, wherein upon power-up activation of the blower, triggering power-up activation of the control device;
and when the control equipment is electrified and started, the electromagnetic valve is controlled to be opened.
3. The release valve control apparatus of claim 1, wherein the control device comprises a power switching module and a processor;
the control end of the power supply switching module is connected with the processor, the input end of the power supply switching module is connected with the electromagnetic valve, and the output end of the power supply switching module is connected with a power supply.
4. The release valve control apparatus of claim 3, wherein the power switching module is a relay.
5. The release valve control apparatus of claim 4, further comprising a power conversion module connected between the power supply and the power switching module.
6. The release valve control apparatus according to claim 1, wherein the solenoid valve is a 24V solenoid valve.
7. The release valve control apparatus of any of claims 1 to 6, wherein the power detection module comprises a voltage sensor connected to the control device.
8. A relief valve control method, comprising the steps of:
respectively receiving power supply data transmitted by a power supply detection module and rotating speed data transmitted by a rotating speed detection module;
processing the power supply data and the rotating speed data, and controlling the electromagnetic valve to be closed when the power supply data falls into a power supply threshold range and the rotating speed data is greater than or equal to a rotating speed threshold according to a processing result;
and when the power supply data is zero, controlling the electromagnetic valve to be opened.
9. The relief valve control method of claim 8, further comprising the steps of:
and when the blower is electrified and started, the electromagnetic valve is controlled to be opened.
10. A magnetically levitated centrifugal blower system comprising a blower and the release valve control apparatus of any one of claims 1 to 7;
and the release valve control device is communicated with an air outlet of the blower.
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| CN202010228001.7A CN111486263A (en) | 2020-03-27 | 2020-03-27 | Release valve control device, control method and magnetic suspension centrifugal blower |
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| CN202010228001.7A CN111486263A (en) | 2020-03-27 | 2020-03-27 | Release valve control device, control method and magnetic suspension centrifugal blower |
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| CN110486317A (en) * | 2019-09-02 | 2019-11-22 | 国合动力科技宜兴有限公司 | Blow valve for the air blower that suspends |
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