CN112128109A - Structure and method for identifying working condition according to pump temperature - Google Patents
Structure and method for identifying working condition according to pump temperature Download PDFInfo
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- CN112128109A CN112128109A CN202010857688.0A CN202010857688A CN112128109A CN 112128109 A CN112128109 A CN 112128109A CN 202010857688 A CN202010857688 A CN 202010857688A CN 112128109 A CN112128109 A CN 112128109A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/19—Temperature
- F04C2270/195—Controlled or regulated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/22—Temperature difference
- F04C2270/225—Controlled or regulated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/78—Warnings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/86—Detection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a vacuum pump, which provides a structure and a recognition method for recognizing working conditions according to pump temperature, which has simple structure, can accurately recognize the working conditions of the vacuum pump according to the difference between the pump temperature and the environmental temperature, automatically execute early warning in a risk state to ensure the normal operation of a vacuum system, and prolong the service life of the vacuum pump, and solves the technical problems that the working conditions of the vacuum pump are directly recognized according to the pump temperature to cause poor recognition accuracy of the working conditions of the vacuum pump, influence the vacuum performance and the normal operation, seriously influence the service life of the vacuum pump and the like in the prior art by neglecting the influence of the environmental temperature, and the controller controls the running state of the vacuum pump in real time according to the comparison result.
Description
Technical Field
The invention relates to a vacuum pump, in particular to a structure and a method for identifying working conditions according to pump temperature, which can accurately identify the working conditions of the vacuum pump according to the difference value between a pump temperature identification point and ambient temperature, and automatically execute early warning in a risk state so as to ensure the normal operation of a vacuum system and prolong the service life of the vacuum pump.
Background
When the method is applied to the working conditions of high water vapor or various corrosive gases, the oil of a vacuum pump in an oil-sealed vacuum pump such as a rotary vane vacuum pump or a slide valve vacuum pump is usually emulsified or cracked, so that the vacuum pump has the phenomena of vacuum degree reduction, performance degradation, temperature rise and the like, and even blocking occurs in severe cases, in order to ensure the normal operation of the vacuum pump, the conventional method generally adopts the regular replacement of pump oil, or adopts the real-time monitoring of the pump temperature according to the phenomenon that the pump oil is seriously emulsified or cracked and the operation temperature of the pump rises, when the pump temperature reaches a set limit value, the vacuum pump oil is replaced, but because the water vapor or various corrosive gases in the working conditions are different, the preset oil replacement period often has larger deviation from the actual condition, and in addition, because the change influence of the environmental temperature (the normal environmental temperature use range is 10-40 ℃), the mode of directly monitoring the pump temperature often cannot accurately identify the pump oil emulsification or cracking The temperature is abnormal. In addition, when the dry type vacuum pump is applied to the working conditions of corrosive industry or high dust, dust is adsorbed on a rotor and a stator of the dry type vacuum pump or the risk of blocking the machine after the dust is adsorbed or corroded, when the dust is adsorbed or corroded, the gap between the pumps is reduced, the temperature of the pumps is increased, the change influence of the environmental temperature is also received, the state of the machine is identified by the conventional method for monitoring the temperature of the pumps generally, so that the problem that the machine cannot be accurately identified due to the influence of the environmental temperature is also solved, the normal operation of a vacuum system is caused, the service life of the vacuum pump is directly influenced, and the technical problems that the machine is easy to shut down and the like are brought to a vacuum application production line or various.
Disclosure of Invention
The invention mainly provides a structure and a recognition method for recognizing working conditions according to pump temperature, which have simple structure, can accurately recognize the working conditions of a vacuum pump according to the difference between the pump temperature and the ambient temperature, automatically perform early warning in a risk state to ensure the normal operation of a vacuum system, and prolong the service life of the vacuum pump, and solves the technical problems that the working conditions of the vacuum pump are directly recognized according to the pump temperature due to poor recognition accuracy, the vacuum performance and the normal operation of the vacuum pump are influenced, the service life of the vacuum pump is seriously influenced and the like in the prior art because the influence of the ambient temperature is ignored.
The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a structure according to pump temperature discernment operating mode, includes the vacuum pump be equipped with pump temperature sensor on the vacuum pump, be equipped with ambient temperature sensor in the environmental space that is close to the vacuum pump, pump temperature sensor and ambient temperature sensor all connect on the controller, and the controller compares in real time according to pump temperature sensor and ambient temperature sensor's detection information, and the controller is again according to the running state of comparison result real-time control vacuum pump. The temperature of the vacuum pump is detected in real time through the pump temperature sensor, the environment temperature where the vacuum pump is located is detected in real time through the environment temperature sensor, the two detected temperature values are transmitted to the controller, the controller calculates the difference between the two detected temperature values in real time, the accurate control of the running state of the vacuum pump is realized by controlling the temperature rise (namely the temperature difference) of the vacuum pump, the structure is simple, the influence of the running environment temperature of the vacuum pump is eliminated, the risk state (oil emulsification of an oil seal type vacuum pump or a dry vacuum pump clamping machine and the like) is judged in time, a prompt is sent out or the automatic control of the vacuum pump is realized, a user is reminded to maintain the vacuum pump in time, the safety and the reliability are realized, the normal running of the vacuum pump and the stability of a vacuum system are guaranteed, the.
Preferably, the pump temperature sensor includes a pump body sensor, a motor sensor, a bearing sensor, and a pump oil sensor. The pump body sensor is used for real-time detection pump body temperature, motor sensor is used for real-time detection motor temperature, bearing sensor is used for real-time detection bearing temperature, pump oil sensor is used for real-time detection pump oil temperature, according to the vacuum pump of different grade type, and the different use occasion and environment of vacuum pump etc., the detection temperature and the ambient temperature who selects the different positions of detection vacuum pump are compared, in order to improve detection precision and detection accuracy, same detection position can set up a plurality of temperature sensor, and select the highest value or average value to calculate, thereby realize the accurate control to the vacuum pump, simultaneously also can choose other sensors for use temporarily to compare control when one of them sensor became invalid, be convenient for emergency state's use.
The vacuum pump is a rotary vane vacuum pump, the pump temperature sensor comprises a pump body sensor, a motor sensor, a bearing sensor, an oil tank sensor, an oil pump sensor and a motor shell sensor, the pump body sensor is arranged on the pump stator, the motor sensor is arranged on the motor stator, the bearing sensor is respectively arranged on a support bearing and a motor bearing, the oil tank sensor is arranged on the surface of the oil tank, the oil pump sensor is arranged under the oil level of the oil tank, and the motor shell sensor is arranged on the motor shell. Because the main temperature rise part or the position that vacuum pump its produced under the operating mode condition of difference are different, consequently carry out temperature detection to the key parts position of vacuum pump respectively through setting up a plurality of sensors to satisfy its accurate control demand under different operating modes.
Preferably, the vacuum pump is a dry pump, the pump temperature sensor comprises a pump body sensor, a motor sensor, a bearing sensor, a pump oil sensor, a pump rotor sensor, an air inlet sensor and an air outlet sensor, the pump body sensor is respectively arranged on a pump body pump shell or/and a pump rotor, the motor sensor is arranged on a motor stator, and the bearing sensor is respectively arranged on a motor bearing or/and an air inlet bearing and an air outlet bearing. Because the main temperature rise part or the position that vacuum pump its produced under the operating mode condition of difference is different equally, consequently carry out temperature detection to the key part position of dry pump respectively through setting up a plurality of sensors to satisfy its accurate control demand under different operating modes.
Preferably, the controller is connected with an alarm device, and the alarm device is selectively turned on or off according to the comparison result of the controller. The controller is connected with the alarm device, and the risk state of the user is reminded in the alarm modes of sound, light and the like, so that the method is simple and clear.
Preferably, the controller is a single chip microcomputer or a PLC. The controller which is internally or externally arranged on the vacuum pump adopts a single chip microcomputer or PLC, so that the cost is low, and the operation is safe and reliable.
A method for identifying working conditions according to pump temperature comprises the following sequential steps:
1) setting a temperature difference set value delta T of a pump temperature sensor and an environment temperature sensor;
2) and starting the vacuum pump, receiving detection information of the pump temperature sensor and the environment temperature sensor by the controller, calculating a real-time temperature difference value delta T between the pump temperature sensor and the environment temperature sensor in real time, starting the alarm device or stopping the vacuum pump by the controller when the real-time temperature difference value delta T reaches a set temperature difference value delta T, and otherwise, maintaining the original running state of the vacuum pump.
Preferably, the temperature difference set value Δ T includes a temperature difference set value Δ T1 of the pump body sensor and the ambient temperature sensor, a temperature difference set value Δ T2 of the motor sensor and the ambient temperature sensor, a temperature difference set value Δ T3 of the bearing sensor and the ambient temperature sensor, and a temperature difference set value Δ T4 of the pump oil sensor and the ambient temperature sensor, and when any one real-time temperature difference value Δ T reaches the corresponding temperature difference set value Δ T, step 2 is executed).
According to the vacuum pump of different grade type and different discharge capacities under the operating mode condition of difference its main temperature rise part or position that produces are different, and each part or position are different to the temperature rise value that corresponds the operating mode performance, consequently through set up a plurality of sensors in each position of vacuum pump to set up the difference of sensor and compare the difference in temperature setting value, can select to use sensor and the difference in temperature setting value that corresponds according to the operating mode and come the risk state of accurate discernment vacuum pump, in order to satisfy its accurate control demand under different operating modes.
More preferably, when the vacuum pump is a rotary vane vacuum pump, the temperature difference set value Δ T is additionally provided with a temperature difference set value Δ T5 of a pump oil sensor and an environment temperature sensor, and a temperature difference set value Δ T6 of a motor shell sensor and an environment temperature sensor; when the vacuum pump is a dry pump, the temperature difference set value delta T is additionally provided with a temperature difference set value delta T7 of a pump rotor sensor and an environment temperature sensor, a temperature difference set value delta T8 of an air inlet sensor and an environment temperature sensor, and a temperature difference set value delta T9 of an air outlet sensor and an environment temperature sensor. According to the respective characteristics of the oil-sealed vacuum pump and the dry pump, temperature sensors and corresponding temperature difference set values are distributed on different parts or parts so as to meet the accurate control requirements of the oil-sealed vacuum pump and the dry pump under different working conditions.
More preferably, the temperature range of the delta T1 is 30 ℃ to 100 ℃, the temperature range of the delta T2 is 50 ℃ to 120 ℃, the temperature range of the delta T3 is 30 ℃ to 80 ℃, the temperature range of the delta T4 is 20 ℃ to 80 ℃, the temperature range of the delta T5 is 20 ℃ to 80 ℃, the temperature range of the delta T6 is 30 ℃ to 90 ℃, the temperature range of the delta T7 is 60 ℃ to 120 ℃, the temperature range of the delta T8 is 20 ℃ to 60 ℃, and the temperature range of the delta T9 is 30 ℃ to 80 ℃. Because the main temperature rise parts or parts of the vacuum pumps with different types and different discharge capacities are different under different working conditions, the temperature difference set value range is reasonably set according to specific conditions, the misjudgment condition can be reduced, and the accurate control is optimized.
Therefore, the structure and the identification method for identifying the working condition according to the pump temperature have the following advantages:
1. the oil change time of the oil seal type vacuum pump can be predicted, and an alarm device is adopted to remind oil change or control an oil change mechanism to realize automatic oil change;
2. the risk of the card machine of the dry vacuum pump can be predicted, and a warning device is adopted to warn the risk of the card machine or automatically stop the machine in case of emergency;
3. the influence of the environmental temperature on the pump temperature is eliminated, and the accurate control is realized;
4. the temperature rise between the pump and the ambient temperature can be controlled, and the temperature rise between different parts of the pump can be controlled according to the use requirement so as to respond to different operation and use states.
Description of the drawings:
FIG. 1 is a schematic structural view of a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the present invention;
fig. 3 is a schematic configuration diagram of a third embodiment of the present invention.
The specific implementation mode is as follows:
the technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1:
referring to fig. 1, taking a rotary vane vacuum pump as an example, the structure for identifying working conditions according to pump temperature of the present invention is that a plurality of pump temperature sensors are installed on the vacuum pump, the pump temperature sensors include two pump body sensors 11, two motor sensors 12, two bearing sensors 13, two pump oil sensors 15 and two motor casing sensors 16, wherein the two pump body sensors 11 are respectively installed on the top surface and the bottom surface of a pump stator, the two motor sensors 12 are respectively installed on both ends of the bottom surface of the motor stator, the two bearing sensors 13 are respectively installed on a bracket bearing and a motor bearing, the two oil tank sensors 14 are respectively installed in the middle of the top surface and the bottom surface of an oil tank, the one pump oil sensor 15 is installed on the bottom surface in the oil tank, the one motor casing sensor 16 is installed above a motor casing close to the bracket, an environment temperature sensor 3 is externally installed in an environment space close to the vacuum pump, the pump temperature sensor and the environment temperature sensor 3 are both connected to the controller 1, the controller 1 in the embodiment is a single chip microcomputer and is fixed above the rear side face of the support, the controller 1 is electrically connected with the alarm device 4 through a wire, and the alarm device 4 in the embodiment is an audible and visual alarm and is installed on a motor capacitance box. Before the vacuum pump is started, firstly, the temperature detection part of the vacuum pump and the corresponding temperature difference set value delta T are determined according to the use condition, occasion and the like of the vacuum pump, the temperature difference set value delta T is directly displayed by the controller 1, the temperature difference between the temperature sensor at the detection part and the environment temperature sensor 3 is compared with the set temperature difference set value delta T in real time in the operation process, and when the real-time temperature difference value delta T reaches the set temperature difference set value delta T, the alarm device 4 is started to implement alarm reminding.
A method for identifying working conditions according to pump temperature comprises the following sequential steps:
1) setting a temperature difference set value delta T of a pump temperature sensor and an environment temperature sensor 3, and selecting the corresponding temperature difference set value delta T as a comparison reference according to the use condition of the vacuum pump;
the temperature difference set value delta T comprises a temperature difference set value delta T1 of the pump body sensor 11 and the environment temperature sensor 3, a temperature difference set value delta T2 of the motor sensor 12 and the environment temperature sensor 3, a temperature difference set value delta T3 of the bearing sensor 13 and the environment temperature sensor 3, a temperature difference set value delta T4 of the pump oil sensor 15 and the environment temperature sensor 3, a temperature difference set value delta T5 of the pump oil sensor 15 and the environment temperature sensor 3, and a temperature difference set value delta T6 of the motor shell sensor 16 and the environment temperature sensor 3; wherein, the temperature is 30 ℃ for delta T1, 50 ℃ for delta T2, 30 ℃ for delta T3, 20 ℃ for delta T4, 20 ℃ for delta T5, 30 ℃ for delta T6, 60 ℃ for delta T7, 20 ℃ for delta T8 and 30 ℃ for delta T9;
2) and starting the vacuum pump, wherein the controller 1 receives detection information of the pump temperature sensor and the environment temperature sensor 3 and calculates a real-time temperature difference value delta T between the pump temperature sensor and the environment temperature sensor in real time, and when the real-time temperature difference value delta T reaches any one temperature difference set value delta T from T1 to delta T9, the controller 1 starts the alarm device 4 or stops the vacuum pump, otherwise, the vacuum pump maintains the original running state.
Example 2:
wherein Δ T1 is 100 ℃, Δ T2 is 120 ℃, Δ T3 is 80 ℃, Δ T4 is 80 ℃, Δ T5 is 80 ℃, Δ T6 is 90 ℃, Δ T7 is 120 ℃, Δ T8 is 60 ℃ and Δ T9 is 80 ℃. The remaining components are identical to those of example 1.
Example 3:
wherein Δ T1 is 70 ℃, Δ T2 is 90 ℃, Δ T3 is 60 ℃, Δ T4 is 50 ℃, Δ T5 is 60 ℃, Δ T6 is 70 ℃, Δ T7 is 80 ℃, Δ T8 is 40 ℃ and Δ T9 is 50 ℃. The remaining components are exactly the same as in example 1.
Example 4:
as shown in fig. 2, taking a roots pump as an example, the controller 1 is external and wirelessly transmits through bluetooth, the pump temperature sensors include two pump body sensors 11, two motor sensors 12, two bearing sensors 13, two pump oil sensors 15, two pump rotor sensors 17, one air inlet sensor 18 and one air outlet sensor 19, the two pump body sensors 11 are installed at two ends above the pump housing, the two motor sensors 12 are installed at two ends of the motor stator, the four bearing sensors 13 are installed on the air inlet bearing, the other two pump oil sensors 15 are installed on the air outlet bearing, the one pump oil sensor 15 is installed below the lubricant liquid level at the bottom of the gear box, the two pump rotor sensors 17 are installed at two ends of the pump rotor, and the one air inlet sensor 18 and the one air outlet sensor 19 are installed at the end parts of the air inlet and the air outlet respectively. The remaining components are identical to those of example 1.
Example 5:
as shown in fig. 3, taking a screw pump as an example, the controller 1 is externally arranged and wirelessly transmits through bluetooth, the pump temperature sensor includes three pump body sensors 11, a motor sensor 12, a bearing sensor 13, a pump oil sensor 15, a pump rotor sensor 17, an air inlet sensor 18 and an air outlet sensor 19, wherein one of the three pump body sensors 11 is installed at the front end above the pump shell, the other two pump body sensors 11 are respectively installed at the two ends of the pump rotor, the two motor sensors 12 are installed at the two ends of the motor stator, the four bearing sensors 13 are installed on the motor front end bearing, the other two pump oil sensors 15 are installed on the motor rear end bearing, the two pump oil sensors 15 are installed under the lubricating oil level at the bottom of the gear box, the two pump rotor sensors 17 are installed at the two ends of the pump rotor, the air inlet sensor 18 and the air outlet sensor, respectively arranged at the end parts of the air inlet and the air outlet. The remaining components are identical to those of example 1.
The specific embodiments described herein are merely illustrative of the principles of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a structure according to pump temperature discernment operating mode, includes the vacuum pump, its characterized in that: be equipped with pump temperature sensor on the vacuum pump, be equipped with ambient temperature sensor (3) in the environmental space that is close to the vacuum pump, pump temperature sensor and ambient temperature sensor (3) all connect on controller (1), and controller (1) compares in real time according to the detection information of pump temperature sensor and ambient temperature sensor (3), and controller (1) is again according to the running state of comparison result real time control vacuum pump.
2. The structure for identifying the operating condition according to the pump temperature as claimed in claim 1, wherein: the pump temperature sensor comprises a pump body sensor (11), a motor sensor (12), a bearing sensor (13) and an oil pumping sensor (15).
3. The structure for identifying the operating condition according to the pump temperature as claimed in claim 1, wherein: the vacuum pump is a rotary-vane vacuum pump, the pump temperature sensor comprises a pump body sensor (11), a motor sensor (12), a bearing sensor (13), an oil tank sensor (14), a pump oil sensor (15) and a motor shell sensor (16), the pump body sensor (11) is arranged on a pump stator, the motor sensor (12) is arranged on the motor stator, the bearing sensor (13) is respectively arranged on a support bearing and a motor bearing, the oil tank sensor (14) is arranged on the surface of an oil tank, the pump oil sensor (15) is arranged under the oil level of the oil tank, and the motor shell sensor (16) is arranged on a motor shell.
4. The structure for identifying the operating condition according to the pump temperature as claimed in claim 1, wherein: the vacuum pump is a dry pump, the pump temperature sensor comprises a pump body sensor (11), a motor sensor (12), a bearing sensor (13), a pump oil sensor (15), a pump rotor sensor (17), an air inlet sensor (18) and an air outlet sensor (19), wherein the pump body sensor (11) is respectively arranged on a pump body pump shell or/and a pump rotor, the motor sensor (12) is arranged on a motor stator, and the bearing sensor (13) is respectively arranged on the motor bearing or/and the air inlet bearing and the air outlet bearing.
5. The structure for identifying the operating condition according to the pump temperature as claimed in claim 1, wherein: the controller (1) is connected with an alarm device (4), and the alarm device (4) is selectively turned on or off according to the comparison result of the controller (1).
6. The structure for identifying the operating condition according to the pump temperature as claimed in claim 1, wherein: the controller (1) is a single chip microcomputer or a PLC.
7. A method for identifying working conditions according to pump temperature is characterized in that: the method comprises the following steps:
1) setting a temperature difference set value delta T of a pump temperature sensor and an environment temperature sensor (3);
2) and starting the vacuum pump, receiving detection information of the pump temperature sensor and the environment temperature sensor (3) by the controller (1), calculating a real-time temperature difference value delta T of the pump temperature sensor and the environment temperature sensor in real time, starting the alarm device (4) or stopping the vacuum pump by the controller (1) when the real-time temperature difference value delta T reaches a set temperature difference value delta T, and otherwise, maintaining the original running state of the vacuum pump.
8. The method for identifying operating conditions according to pump temperature as claimed in claim 7, wherein: the temperature difference set value delta T comprises a temperature difference set value delta T1 of the pump body sensor (11) and the environment temperature sensor (3), a temperature difference set value delta T2 of the motor sensor (12) and the environment temperature sensor (3), a temperature difference set value delta T3 of the bearing sensor (13) and the environment temperature sensor (3) and a temperature difference set value delta T4 of the pump oil sensor (15) and the environment temperature sensor (3), and when any one real-time temperature difference value delta T reaches the corresponding temperature difference set value delta T, the step 2 is executed.
9. The method for identifying operating conditions according to pump temperature as claimed in claim 8, wherein: when the vacuum pump is a rotary vane vacuum pump, a temperature difference set value delta T5 of the pump oil sensor (15) and the environment temperature sensor (3) and a temperature difference set value delta T6 of the motor shell sensor (16) and the environment temperature sensor (3) are additionally arranged at the temperature difference set value delta T; when the vacuum pump is a dry pump, the temperature difference set value delta T is additionally provided with a temperature difference set value delta T7 of a pump rotor sensor (17) and an environment temperature sensor (3), a temperature difference set value delta T8 of an air inlet sensor (18) and the environment temperature sensor (3), and a temperature difference set value delta T9 of an air outlet sensor (19) and the environment temperature sensor (3).
10. The method for identifying operating conditions according to pump temperature as claimed in claim 9, wherein: the temperature of the delta T1 is 30-100 ℃, the temperature of the delta T2 is 50-120 ℃, the temperature of the delta T3 is 30-80 ℃, the temperature of the delta T4 is 20-80 ℃, the temperature of the delta T5 is 20-80 ℃, the temperature of the delta T6 is 30-90 ℃, the temperature of the delta T7 is 60-120 ℃, the temperature of the delta T8 is 20-60 ℃, and the temperature of the delta T9 is 30-80 ℃.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565737A (en) * | 2021-05-28 | 2021-10-29 | 南京真空泵厂有限公司 | Mechanical fault self-checking formula intelligence vacuum pump based on 5G communication |
| CN115234504A (en) * | 2022-07-19 | 2022-10-25 | 华涧新能源科技(上海)有限公司 | Operation control method of hydrogen circulating pump and galvanic pile system applying hydrogen circulating pump |
| CN116538090A (en) * | 2023-04-26 | 2023-08-04 | 北京通嘉宏瑞科技有限公司 | Vacuum pump temperature control system and temperature control method |
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