CN116123123A - Control method of magnetic suspension blower system and magnetic suspension blower system - Google Patents
Control method of magnetic suspension blower system and magnetic suspension blower system Download PDFInfo
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- CN116123123A CN116123123A CN202310348796.9A CN202310348796A CN116123123A CN 116123123 A CN116123123 A CN 116123123A CN 202310348796 A CN202310348796 A CN 202310348796A CN 116123123 A CN116123123 A CN 116123123A
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- pipeline
- blower
- mixing tank
- blower system
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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
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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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
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a control method of a magnetic suspension blower system and the magnetic suspension blower system, wherein the magnetic suspension blower system comprises a blower body, a buffer tank, a mixing tank, a pressure relief pipeline, a special gas pipeline and an atmosphere pipeline, and a first control valve is arranged on the pressure relief pipeline; the mixing tank is communicated with a special gas pipeline and an atmosphere pipeline, the special gas pipeline is provided with a second control valve, and the atmosphere pipeline is provided with a third control valve; the control method of the magnetic suspension blower system comprises the following steps of; s1: opening a first control valve and a third control valve, and starting the blower body to buffer frequency; s2: when the temperature in the mixing tank is lower than the preset temperature, the speed of the blower body is increased to the rated frequency; s3: and closing the first control valve and the third control valve, and opening the second control valve to realize the output of the special gas to external process equipment. The control method can blow the special gas by using the magnetic suspension blower system, and the phenomenon of special gas leakage can not occur.
Description
Technical Field
The invention relates to the field of special gas process equipment, in particular to a control method of a magnetic suspension blower system and the magnetic suspension blower system.
Background
The magnetic suspension blower utilizes an active magnetic suspension bearing system, carries out non-contact and non-abrasion suspension support on the internal rotating magnetic suspension bearing through controllable electromagnetic force, and the magnetic suspension bearing is directly connected with the impeller, so that zero loss is transmitted, and the effects of successful gas conveying, no abrasion in the machine, low noise, no lubrication and the like are achieved. Although magnetic levitation blowers have superior performance, the existing magnetic levitation blowers are often used for blowing air, but cannot be used for special gases which cannot leak. The reason is that when the back pressure exists in the process pipeline of the magnetic suspension blower, the magnetic suspension blower can be used after pressure relief, but the phenomenon of gas leakage is very easy to occur in the pressure relief process.
Disclosure of Invention
A first object of the present invention is to provide a control method of a magnetic levitation blower system, with which a special gas can be blown using the magnetic levitation blower system without occurrence of a phenomenon of leakage of the special gas.
The second object of the invention is to provide a magnetic suspension blower system, which can blow special gas without leakage of the special gas.
In order to realize the technical scheme, the technical scheme of the invention is as follows:
the invention discloses a control method of a magnetic suspension blower system, which comprises a blower body, a buffer tank, a mixing tank, a pressure relief pipeline, a special gas pipeline and an atmosphere pipeline, wherein a process pipeline of the blower body is communicated with the pressure relief pipeline and external process equipment, and a first control valve is arranged on the pressure relief pipeline; the mixing tank is communicated with the special gas pipeline and the atmosphere pipeline, a second control valve is arranged on the special gas pipeline, and a third control valve is arranged on the atmosphere pipeline;
the control method of the magnetic suspension blower system comprises the following steps of;
s1: opening the first control valve and the third control valve, and starting the blower body to buffer frequency;
s2: when the temperature in the mixing tank is lower than a preset temperature, the blower body is accelerated to rated frequency;
s3: and closing the first control valve and the third control valve, and opening the second control valve to output the special gas to the external process equipment.
In some embodiments, in step S2, when the temperature in the mixing tank is higher than the preset temperature, the blower body operates at the buffer frequency for a first specified period of time; wherein:
if the first specified duration is less than the preset duration, judging whether the temperature in the mixing tank is lower than the preset temperature, if the temperature in the mixing tank is lower than the preset temperature, accelerating the blower body to the rated frequency, and if the temperature in the mixing tank is still higher than the preset temperature, operating the blower body for the first specified duration at the buffer frequency;
if the first designated time length is greater than or equal to the preset time length, the blower body is stopped and alarms.
In some embodiments, step S3 comprises:
s31: closing the first control valve;
s32: opening the second control valve;
s33: and closing the third control valve.
In some specific embodiments, in step S31:
if the opening of the first control valve is reduced to 0 in the second designated time period, step S32 is performed, and after the second designated time period is exceeded, the opening of the first control valve is not 0, and the blower body is stopped and alarms.
In some embodiments, the control method of the magnetic levitation blower system further comprises:
s4: after the special gas is output, opening the third control valve and closing the second control valve;
s5: when the special gas in the mixing tank is smaller than a preset concentration, opening the first control valve;
s6: and closing the blower body, and closing the first control valve and the third control valve.
In some specific embodiments, the magnetic levitation blower system further comprises a first communication pipeline and a second communication pipeline, wherein the first communication pipeline is used for communicating the buffer tank and the process pipeline of the blower body, the second communication pipeline is used for communicating the buffer tank and the mixing tank, a fourth control valve is arranged on the first communication pipeline, and a fifth control valve is arranged on the second communication pipeline;
in the operation process, when the blower body is abnormally stopped, the control method of the magnetic suspension blower system further comprises the following steps:
q1: opening the fourth control valve to release the special gas to the buffer tank;
q2: opening the fifth control valve in the pressure release process;
q3: closing the second control valve after the external process equipment is stopped;
q4: the fourth control valve and the fifth control valve are closed.
In some more specific embodiments, when the blower body is abnormally stopped and the blower body is failed, the control method of the magnetic levitation blower system further includes:
w1: opening the fourth control valve and the fifth control valve, and starting the blower body to buffer frequency;
w2: when the temperature in the mixing tank is lower than the preset temperature, the blower body is accelerated to rated frequency;
w3: opening the second control valve to a non-fully open state and closing the fourth control valve;
w4: and if the internal volume of the buffer tank reaches the minimum volume within a third specified duration, controlling the second control valve to be in a fully-opened state, and closing the fifth control valve.
The invention also discloses a magnetic suspension blower system, which comprises a blower body, a buffer tank, a mixing tank, a pressure relief pipeline, a special gas pipeline and an atmosphere pipeline, wherein the blower body is communicated with the pressure relief pipeline, and a first control valve is arranged on the pressure relief pipeline; the mixing tank is communicated with the special gas pipeline and the atmosphere pipeline, a second control valve is arranged on the special gas pipeline, a third control valve is arranged on the atmosphere pipeline, and the magnetic suspension blower system is controlled by the control method of the magnetic suspension blower system.
In some embodiments, the magnetic levitation blower system further comprises a first communication pipeline and a second communication pipeline, wherein the first communication pipeline is used for communicating the buffer tank and the process pipeline of the blower body, the second communication pipeline is used for communicating the buffer tank and the mixing tank, a fourth control valve is arranged on the first communication pipeline, and a fifth control valve is arranged on the second communication pipeline.
In some embodiments, a first check valve is provided on the process line, a second check valve is provided on the atmospheric line, and the second check valve is located downstream of the third control valve.
The control method of the magnetic suspension blower system of the embodiment has the beneficial effects that: in the starting process, air enters the mixing tank from the atmospheric pipeline, and then is blown to the pressure relief pipeline through the blower body, so that the pressure relief of the process pipeline of the blower body is realized. Because no special gas enters the mixing tank at this time, the special gas leakage phenomenon does not occur when the blower body is depressurized under the buffer frequency, and the magnetic suspension blower system can be used for blowing the special gas by using the control method, so that the special gas leakage phenomenon does not occur.
The magnetic suspension blower system of the embodiment has the beneficial effects that: in the starting process, air enters the mixing tank from the atmospheric pipeline, and then is blown to the pressure relief pipeline through the blower body, so that the pressure relief of the process pipeline of the blower body is realized. Because no special gas enters the mixing tank at this time, when the blower body is depressurized under the buffer frequency, no special gas leakage phenomenon exists, so that the magnetic suspension blower system can blow the special gas by using the magnetic suspension blower system, and no special gas leakage phenomenon exists.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a normal start-up flow of a magnetic levitation blower system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a normal shutdown flow of a magnetic levitation blower system according to an embodiment of the present invention;
FIG. 3 is an abnormal shutdown flow diagram of a magnetic levitation blower system of an embodiment of the present invention when an abnormal shutdown of the blower body occurs;
FIG. 4 is a flow chart of a magnetic levitation blower system of an embodiment of the present invention restarting after an abnormal shutdown;
fig. 5 is a schematic structural diagram of a magnetic levitation blower system according to an embodiment of the present invention.
Reference numerals:
1. a blower body; 2. a buffer tank; 3. a mixing tank; 4. a pressure relief conduit; 5. a special gas pipe; 6. an atmospheric duct; 7. a first communication pipe; 8. a second communication pipe; 9. a process pipe; 10. a first control valve; 20. a second control valve; 30. a third control valve; 40. a fourth control valve; 50. a fifth control valve; 60. a temperature detector; 70. a concentration detector; 80. a first check valve; 90. a second check valve.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes a specific flow of a control method of the magnetic levitation blower system according to an embodiment of the present invention with reference to fig. 1 to 4.
The invention discloses a control method of a magnetic suspension blower system, as shown in fig. 5, the magnetic suspension blower system comprises a blower body 1, a buffer tank 2, a mixing tank 3, a pressure relief pipeline 4, a special gas pipeline 5, an atmospheric pipeline 6 and a control device, wherein a process pipeline 9 of the blower body 1 is communicated with the pressure relief pipeline 4 and external process equipment, and a first control valve 10 is arranged on the pressure relief pipeline 4; the mixing tank 3 is communicated with a special gas pipeline 5 and an atmosphere pipeline 6, the special gas pipeline 5 is provided with a second control valve 20, and the atmosphere pipeline 6 is provided with a third control valve 30. The control device is electrically connected to the first, second and third control valves 10, 20 and 30 to control the opening degrees of the first, second and third control valves 10, 20 and 30, and the type of the control device may be selected according to the actual situation, and no limitation is required to be made to the specific type of the control device.
As shown in fig. 1, the control method of the magnetic levitation blower system includes;
s1: opening the first control valve 10 and the third control valve 30, and starting the blower body 1 to buffer frequency; specifically, the first control valve 10 and the third control valve 30 are opened so that the opening degrees of the first control valve 10 and the third control valve 30 are maximized, and the blower body 1 is started. The pressure relief pipeline 4 and the atmosphere pipeline 6 are opened at this time, air enters the mixing tank 3 from the atmosphere pipeline 6, and then is blown to the pressure relief pipeline 4 through the blower body 1, so that the pressure relief of the process pipeline 9 of the blower body 1 is realized. Since the second control valve 20 is in the closed state at this time, no special gas enters the mixing tank 3, so that no special gas leaks when the blower body 1 is depressurized at the buffer frequency.
S2: when the temperature in the mixing tank 3 is lower than the preset temperature, the speed-up blower body 1 is increased to the rated frequency;
specifically, a temperature detector 60 is provided in the mixing tank 3, and when the blower body 1 is started, the temperature detector 60 can measure the temperature in the mixing tank 3, and an excessive height of the mixing tank 3 affects the equipment pressurizing capacity. Therefore, it is necessary to be able to raise the speed of the blower body 1 when the temperature in the mixing tank 3 is lower than a preset temperature so that the entire system operates normally.
When the temperature in the mixing tank 3 is higher than the preset temperature, the blower body 1 operates for a first designated period of time at the buffer frequency; because the mixing tank 3 is too high to influence the equipment pressurizing capacity, when the temperature in the mixing tank 3 is higher than the preset temperature, the blower body 1 needs to keep the buffer frequency to run for a period of time, so that air enters the mixing tank 3 to take away the heat of the mixing tank 3, and the cooling of the mixing tank 3 is realized.
Specifically, if the first specified duration is less than the preset duration, judging whether the temperature in the mixing tank 3 is lower than the preset temperature, if the temperature of the mixing tank 3 is lower than the preset temperature, accelerating the blower body 1 to the rated frequency, and if the temperature of the mixing tank 3 is still higher than the preset temperature, operating the blower body 1 for the first specified duration at the buffer frequency;
if the first designated time length is greater than or equal to the preset time length, the blower body 1 is stopped and alarms.
Here, the temperature detector 60 can feed back the temperature in the mixing tank 3 to the control device of the magnetic levitation blower system in real time, so as to ensure that the blower body 1 is accelerated only when the temperature in the mixing tank 3 is lowered and lower than a preset temperature. In the actual working process, the temperature detector 60 detects the temperature in the mixing tank 3 every a first designated time length, so that the temperature in the mixing tank 3 can be stably detected, the measured data quantity can be moderate, and the control device can conveniently process the measured data.
Optionally, the first specified duration is 60 seconds, and the preset duration is 200 seconds. Of course, the first specified duration and the preset duration may be adjusted to any time according to actual needs.
S3: the first control valve 10 and the third control valve 30 are closed, and the second control valve 20 is opened, so that the special gas is output to the external process equipment. The specific flow is as follows: s31: closing the first control valve 10; s32: opening the second control valve 20; s33: the third control valve 30 is closed.
It will be appreciated that after the blower body 1 after pressure relief is completed is operated at a rated frequency, the output of the special gas can be realized, at this time, the first control valve 10 needs to be closed first, the pressure relief pipeline 4 is cut off, leakage from the pressure relief pipeline 4 in the process of outputting the special gas is avoided, then the second control valve 20 is opened, the special gas pipeline 5 is communicated with the mixing tank 3, the special gas continuously enters the mixing tank 3 from an external special gas source, and finally the third control valve 30 is closed, the atmospheric pipeline 6 is cut off, so that external air does not enter the mixing tank 3 any more.
Further, in step S31: if the opening degree of the first control valve 10 falls to 0 within the second specified period of time, step S32 is performed, and after exceeding the second specified period of time, the opening degree of the first control valve 10 is not 0, the blower body 1 is stopped and the alarm is given. It will be appreciated that, in the case of the first control valve 10, the second control valve 20 and the third control valve 30, if the second control valve 20 and the third control valve 30 fail, they do not cause a large leakage of the special gas, but if the first control valve 10 fails, the pressure release pipe 4 may be always in a connected state, so that a large leakage of the special gas may occur, and therefore, it is necessary to monitor the opening of the first control valve 10, and after the second specified period of time is exceeded, it is indicated that the opening of the first control valve 10 is not 0, and that the first control valve 10 may fail, and at this time, in order to avoid a large leakage of the special gas, it is necessary to stop for maintenance. Therefore, the phenomenon of special gas leakage in the working process can be avoided to the greatest extent, and the working safety of the magnetic suspension blower system is ensured.
Alternatively, the second designated time period is 10 seconds. Of course, the second specified duration may also be adjusted according to actual needs, and is not limited to 10 seconds in this embodiment.
Further, referring to fig. 2, the control method of the magnetic levitation blower system further includes:
s4: after the special gas is output, the third control valve 30 is opened and the second control valve 20 is closed; specifically, when the magnetic levitation blower system needs to be turned off, the second control valve 20 needs to be turned off, and then the third control valve 30 needs to be turned on, so that air can output the gas in the mixing tank 3 to external process equipment, and the concentration of the special gas in the mixing tank 3 is reduced, so that preparation for shutdown is made.
S5: when the specific gas in the mixing tank 3 is smaller than the preset concentration, the first control valve 10 is opened; specifically, the mixing tank 3 has a concentration detector 70, and when the specific gas in the mixing tank 3 is smaller than the preset concentration, it can be considered that there is substantially no specific gas in the mixing tank 3, and at this time, the first control valve 10 is opened to realize pressure relief of the magnetic levitation blower system, so as to ensure that the pressure in the mixing tank 3 and the process pipe 9 of the blower body 1 is smaller after the shutdown.
S6: the blower body 1 is closed, and the first control valve 10 and the third control valve 30 are closed.
Further, referring to fig. 5, the magnetic levitation blower system further includes a first communication pipe 7 and a second communication pipe 8, the first communication pipe 7 is used for communicating the buffer tank 2 and the process pipe 9 of the blower body 1, the second communication pipe 8 is used for communicating the buffer tank 2 and the mixing tank 3, a fourth control valve 40 is disposed on the first communication pipe 7, and a fifth control valve 50 is disposed on the second communication pipe 8. It can be understood that if the blower body 1 is abnormally stopped, the shutdown cannot be performed according to the foregoing steps S4-S6, and if the special gas leakage phenomenon is still very easy to be caused according to the normal shutdown flow, therefore, the invention also discloses a shutdown flow of stopping the whole magnetic suspension blower system when the blower body 1 is abnormally stopped, referring to fig. 3, specifically as follows:
during operation, when the blower body 1 is abnormally stopped, the control method of the magnetic suspension blower system further comprises the following steps:
q1: opening the fourth control valve 40 to release the special gas to the buffer tank 2; specifically, at this time, the first control valve 10, the third control valve 30 and the fifth control valve 50 are all in a closed state, and the special gas in the process pipeline 9 of the blower body 1 can be depressurized into the buffer tank 2 by opening the fourth control valve 40;
q2: opening a fifth control valve 50 during pressure relief; at this time, the gas in the mixing tank 3 can be decompressed into the buffer tank 2, so that the circulation of special gas in the process pipeline 9, the buffer tank 2 and the mixing tank 3 of the blower body 1 is realized, and the phenomenon of overlarge pipeline pressure is avoided.
Q3: after the external process equipment is shut down, the second control valve 20 is closed; closing the second control valve 20 after the shut down of the external process equipment can isolate the intake air and avoid the waste of special gases.
Q4: the fourth control valve 40 and the fifth control valve 50 are closed. Therefore, the internal circulation of the special gas can be stopped, and the maintenance is convenient.
Further, referring to fig. 4, after the blower body 1 is abnormally stopped, the process of restarting is as follows:
w1: opening the fourth control valve 40 and the fifth control valve 50, and starting the blower body 1 to buffer frequency; thereby, the pressure in the process piping 9 of the blower body 1 is released during opening of the fourth control valve 40 and the fifth control valve 50.
W2: when the temperature in the mixing tank 3 is lower than the preset temperature, the speed-up blower body 1 is increased to the rated frequency; the specific flow is the same as the step S2, and will not be described here again.
W3: closing the first control valve 10, opening the second control valve 20 to a non-fully open state; because there is a certain negative pressure in the mixing tank 3 and the buffer tank 2, the second control valve 20 is opened to a non-fully opened state at this time, so that the residual special gas in the buffer tank 2 is also output by the blower body 1.
W4: if the internal volume of the surge tank 2 reaches the minimum volume within the third specified period, the second control valve 20 is controlled to the fully open state, and the fifth control valve 50 is closed. At this time, most of the special gas in the buffer tank 2 is already output by the blower body 1, so that the buffer tank 2 is in a state of maximum buffer volume, the fifth control valve 50 is closed, and the second control valve 20 is opened to realize normal special gas output.
Examples:
the invention also discloses a magnetic suspension blower system, which is shown in fig. 5, and comprises a blower body 1, a buffer tank 2, a mixing tank 3, a pressure relief pipeline 4, a special gas pipeline 5 and an atmosphere pipeline 6, wherein the blower body 1 is communicated with the pressure relief pipeline 4, and a first control valve 10 is arranged on the pressure relief pipeline 4; the mixing tank 3 is communicated with the special gas pipeline 5 and the atmosphere pipeline 6, the special gas pipeline 5 is provided with a second control valve 20, the atmosphere pipeline 6 is provided with a third control valve 30, and the magnetic suspension blower system is controlled by using the control method of the magnetic suspension blower system.
Specifically, the magnetic suspension blower system further comprises a first communication pipeline 7 and a second communication pipeline 8, wherein the first communication pipeline 7 is used for communicating the buffer tank 2 and the process pipeline 9 of the blower body 1, the second communication pipeline 8 is used for communicating the buffer tank 2 and the mixing tank 3, a fourth control valve 40 is arranged on the first communication pipeline 7, and a fifth control valve 50 is arranged on the second communication pipeline 8.
Specifically, the process line 9 is provided with a first check valve 80, the atmospheric line 6 is provided with a second check valve 90, and the second check valve 90 is located downstream of the third control valve 30.
In the description of the present specification, reference to the term "some embodiments," "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (10)
1. The control method of the magnetic suspension blower system is characterized in that the magnetic suspension blower system comprises a blower body (1), a buffer tank (2), a mixing tank (3), a pressure relief pipeline (4), a special gas pipeline (5) and an atmosphere pipeline (6), wherein a process pipeline (9) of the blower body (1) is communicated with the pressure relief pipeline (4) and external process equipment, and a first control valve (10) is arranged on the pressure relief pipeline (4); the mixing tank (3) is communicated with the special gas pipeline (5) and the atmosphere pipeline (6), a second control valve (20) is arranged on the special gas pipeline (5), and a third control valve (30) is arranged on the atmosphere pipeline (6);
the control method of the magnetic suspension blower system comprises the following steps of;
s1: opening the first control valve (10) and the third control valve (30), starting the blower body (1) to a buffer frequency;
s2: when the temperature in the mixing tank (3) is lower than a preset temperature, the blower body (1) is accelerated to rated frequency;
s3: closing the first control valve (10) and the third control valve (30), and opening the second control valve (20) to output the special gas to the external process equipment.
2. The control method of a magnetic levitation blower system according to claim 1, characterized in that in step S2, the blower body (1) is operated at the buffer frequency for a first specified period of time when the temperature inside the mixing tank (3) is higher than the preset temperature; wherein:
if the first designated time period is less than a preset time period, judging whether the temperature in the mixing tank (3) is lower than the preset temperature, if the temperature of the mixing tank (3) is lower than the preset temperature, accelerating the blower body (1) to a rated frequency, and if the temperature of the mixing tank (3) is still higher than the preset temperature, operating the blower body (1) for the first designated time period at the buffer frequency;
if the first designated time length is greater than or equal to the preset time length, the blower body (1) is stopped and alarms.
3. The method of controlling a magnetic levitation blower system according to claim 1, wherein step S3 comprises:
s31: -closing the first control valve (10);
s32: -opening the second control valve (20);
s33: -closing the third control valve (30).
4. A control method of a magnetic levitation blower system according to claim 3, wherein in step S31:
if the opening degree of the first control valve (10) is reduced to 0 in the second designated time period, step S32 is performed, and after the second designated time period is exceeded, the opening degree of the first control valve (10) is not 0, and the blower body (1) is stopped and alarms.
5. The control method of a magnetic levitation blower system according to claim 1, characterized in that the control method of a magnetic levitation blower system further comprises:
s4: after the special gas is output, opening the third control valve (30) and closing the second control valve (20);
s5: opening the first control valve (10) when the specific gas in the mixing tank (3) is smaller than a preset concentration;
s6: the blower body (1) is closed, and the first control valve (10) and the third control valve (30) are closed.
6. A control method of a magnetic levitation blower system according to claim 1, characterized in that the magnetic levitation blower system further comprises a first communication pipeline (7) and a second communication pipeline (8), the first communication pipeline (7) is used for communicating the buffer tank (2) and the process pipeline (9) of the blower body (1), the second communication pipeline (8) is used for communicating the buffer tank (2) and the mixing tank (3), a fourth control valve (40) is arranged on the first communication pipeline (7), and a fifth control valve (50) is arranged on the second communication pipeline (8);
during operation, when the blower body (1) is abnormally stopped, the control method of the magnetic suspension blower system further comprises the following steps:
q1: opening the fourth control valve (40) to release the special gas to the buffer tank (2);
q2: opening the fifth control valve (50) during pressure relief;
q3: closing the second control valve (20) after the external process equipment is shut down;
q4: -closing the fourth control valve (40) and the fifth control valve (50).
7. The control method of a magnetic levitation blower system according to claim 6, characterized in that when the blower body (1) is abnormally stopped and the fault is removed, the control method of the magnetic levitation blower system further comprises:
w1: opening the fourth control valve (40) and the fifth control valve (50), starting the blower body (1) to a buffer frequency;
w2: when the temperature in the mixing tank (3) is lower than the preset temperature, the blower body (1) is accelerated to the rated frequency;
w3: -opening the second control valve (20) to a non-fully open state and closing the fourth control valve (40);
w4: and controlling the second control valve (20) to a full-open state and closing the fifth control valve (50) if the internal volume of the buffer tank (2) reaches the minimum volume within a third specified period of time.
8. The magnetic suspension blower system is characterized by comprising a blower body (1), a buffer tank (2), a mixing tank (3), a pressure release pipeline (4), a special gas pipeline (5) and an atmosphere pipeline (6), wherein the blower body (1) is communicated with the pressure release pipeline (4), and a first control valve (10) is arranged on the pressure release pipeline (4); the mixing tank (3) is communicated with the special gas pipeline (5) and the air pipeline (6), a second control valve (20) is arranged on the special gas pipeline (5), a third control valve (30) is arranged on the air pipeline (6), and the magnetic suspension blower system is controlled by adopting the control method of the magnetic suspension blower system according to any one of claims 1-7.
9. The magnetic levitation blower system according to claim 8, further comprising a first communication pipeline (7) and a second communication pipeline (8), wherein the first communication pipeline (7) is used for communicating the buffer tank (2) and the blower body (1), the second communication pipeline (8) is used for communicating the buffer tank (2) and the mixing tank (3), a fourth control valve (40) is arranged on the first communication pipeline (7), and a fifth control valve (50) is arranged on the second communication pipeline (8).
10. A magnetic levitation blower system according to claim 8, characterized in that a first check valve (80) is provided on the process conduit (9), a second check valve (90) is provided on the atmospheric conduit (6), and the second check valve (90) is located downstream of the third control valve (30).
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| US20220136513A1 (en) * | 2019-04-15 | 2022-05-05 | Hitachi Industrial Equipment Systems Co., Ltd. | Gas compressor |
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| JPH06336994A (en) * | 1993-05-28 | 1994-12-06 | Toshiba Corp | Exhauster |
| JP2006266248A (en) * | 2004-04-27 | 2006-10-05 | Osaka Vacuum Ltd | Vacuum pump |
| CN111088427A (en) * | 2018-10-23 | 2020-05-01 | 江西瑞林稀贵金属科技有限公司 | Fan control system and control method based on electronic waste and complex copper-based solid waste |
| CN109322843A (en) * | 2018-11-12 | 2019-02-12 | 德阳宏源机电工程有限责任公司 | The protection system of turbocompressor |
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| CN116123123B (en) | 2023-08-01 |
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