CN116937893A - Centrifugal pump with multistage heat dissipation shell and heat dissipation control method - Google Patents
Centrifugal pump with multistage heat dissipation shell and heat dissipation control method Download PDFInfo
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- CN116937893A CN116937893A CN202311197307.0A CN202311197307A CN116937893A CN 116937893 A CN116937893 A CN 116937893A CN 202311197307 A CN202311197307 A CN 202311197307A CN 116937893 A CN116937893 A CN 116937893A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 165
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000010410 layer Substances 0.000 claims description 103
- 238000005057 refrigeration Methods 0.000 claims description 17
- 230000000007 visual effect Effects 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
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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
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2209/00—Specific aspects not provided for in the other groups of this subclass relating to systems for cooling or ventilating
Abstract
The invention discloses a centrifugal pump with a multistage heat dissipation shell and a heat dissipation control method, and relates to the technical field of cooling and heat dissipation of liquid centrifugal pumps. According to the invention, a multistage heat dissipation shell is adopted, under a normal temperature working condition, high hot air flow in the inner heat exchange layer is subjected to heat exchange through the heat dissipation fan, and then heat exchange between the inner heat exchange layer and the outer shell layer is performed, when an extreme temperature heat dissipation controller judges that the heat exchange cannot meet heat dissipation requirements through monitored temperature, the active heat dissipation device is controlled to be started for active heat dissipation, and a plurality of active heat dissipaters of the active heat dissipation device can actively cool the inner heat exchange layer, so that the temperature of air in the inner heat exchange layer is maintained in a range capable of ensuring normal operation of a motor, and the normal operation requirements of the centrifugal pump under the extreme temperature environment are solved.
Description
Technical Field
The invention relates to the technical field of cooling and heat dissipation of liquid centrifugal pumps, in particular to a centrifugal pump with a multistage heat dissipation shell and a heat dissipation control method.
Background
Centrifugal pumps operate by using rotation of an impeller to cause centrifugal movement of water. Before the centrifugal pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to do high-speed rotation, the water is centrifugally moved and thrown to the outer edge of the impeller, and the water flows into the water pressing pipeline of the water pump through the flow channel of the volute pump shell.
The motor part of the centrifugal pump needs to be subjected to heat dissipation design to meet heat dissipation requirements under different environment temperatures, heat can only be transferred from a high-temperature object to a low-temperature object under spontaneous conditions due to the heat conduction characteristic, and if the centrifugal pump motor adopts a natural heat dissipation structural design under some extreme environments or closed environments, heat in the centrifugal pump motor cannot be subjected to heat exchange with the external environment naturally through a shell, so that heat accumulation in the motor can be caused, and finally the risk of damage to the motor is increased dramatically.
Disclosure of Invention
In order to solve the technical problems, the invention provides a centrifugal pump with a multistage heat dissipation shell and a heat dissipation control method. The following technical scheme is adopted:
the centrifugal pump comprises a pump body, a cooling fan, an impeller mechanism, an active cooling device and an extreme temperature cooling controller, wherein the pump body comprises a multistage cooling shell and a motor, the motor is arranged in the shell, the impeller mechanism is arranged at one end of the multistage cooling shell, an active output shaft of the motor is in transmission connection with a power input shaft of the impeller mechanism through a transmission device, and the cooling fan is arranged at one end of the pump body and used for accelerating heat exchange between air in the multistage cooling shell and outside environment air;
the multistage heat dissipation shell comprises an inner heat exchange layer and an outer shell layer, an active heat dissipation interlayer is arranged between the inner heat exchange layer and the outer shell layer, a plurality of active radiators are arranged on the active heat dissipation device, the active radiators are respectively and uniformly arranged on a plurality of active radiator installation positions arranged in the active heat dissipation interlayer in an array mode, an extreme temperature heat dissipation controller is respectively connected with the active radiators in a control mode, the extreme temperature heat dissipation controller is respectively used for monitoring the temperature of the inner heat exchange layer and the temperature of air in the inner heat exchange layer and is used for controlling the active radiators to cool the inner heat exchange layer, and the cooling amplitude is lower than the temperature of the air in the inner heat exchange layer by at least 10 ℃.
By adopting the technical scheme, for the heat of the centrifugal pump mainly comes from the working heat of the motor in the pump body, the common heat dissipation way mainly is the heat exchange of the shell, and the heat dissipation efficiency is improved by arranging the heat dissipation fan at the end part, so that the normal working requirement of the centrifugal pump under the conventional working condition can be met, and the impeller mechanism is not required to be subjected to additional heat dissipation design because the impeller mechanism is usually filled with pump liquid;
however, under extreme conditions, such as extremely high external temperature, or the centrifugal pump works in a narrow space, the continuous heat accumulation leads to the high air temperature at the position of the centrifugal pump, the heat in the shell is difficult to exchange heat with the external air, or the heat exchange efficiency is very low, the damage risk of the motor is easy to increase under the continuous heat accumulation, a multistage heat dissipation shell is adopted, under normal conditions, the inner high-temperature air flow in the inner heat exchange layer carries out heat exchange through the heat dissipation fan, and then the heat exchange between the inner heat exchange layer and the outer shell layer is carried out, when the temperature of the extreme temperature heat dissipation controller judges that the heat exchange can not meet the heat dissipation requirement through the monitored temperature, the active heat dissipation device is required to be started for active heat dissipation, a plurality of active heat radiators of the active heat dissipation device can cool down for the inner heat exchange layer, the cooling range is lower than the temperature of the air in the inner heat exchange layer by at least 10 ℃, the temperature difference of usually 15-20 ℃, the inner heat exchange layer is accelerated from the inner heat exchange layer to absorb heat, the inner heat of the inner heat exchange layer and the outer shell layer are made of metal inner side with good heat exchange effect, the inner side of the heat exchange layer is made of the active heat dissipation controller, the heat exchange between the inner heat pump and the heat pump is still higher than the normal temperature, the heat pump can be kept in the normal temperature range, and the heat exchange environment can still be guaranteed, and the heat is guaranteed to work condition is still has high, the normal temperature between the heat pump temperature and the heat exchange layer is guaranteed, and the heat layer can be cooled down inside the inner heat layer.
Optionally, the heat dissipation device further comprises a pair of heat conduction plates, wherein the pair of heat conduction plates are respectively arranged at two ends of the multistage heat dissipation shell, the heat dissipation base of the heat dissipation fan is arranged on the outer surface of one of the heat conduction plates, and heat exchange is carried out between the heat conduction plates and air in the multistage heat dissipation shell.
Alternatively, the thermally conductive plate is a single thermally conductive plate.
By adopting the technical scheme, the end part design of the single heat conducting plate is adopted, the risk of reverse heat exchange of outside air is avoided as much as possible under the condition of extremely high outside air temperature, and the heat radiating fan can be turned off while the active heat radiating device is turned on, so that the energy consumption is reduced.
Optionally, the active heat dissipating device comprises a plurality of arc heat conducting plates, a plurality of active heat dissipaters, a plurality of heat collecting pipelines and a centralized heat dissipater, wherein the plurality of arc heat conducting plates are respectively installed in the active heat dissipating interlayer, a gap between two adjacent arc heat conducting plates is an active heat dissipater installation position, the plurality of active heat dissipaters are respectively installed in the active heat dissipater installation position, one ends of the plurality of heat collecting pipelines respectively collect heat of the hot ends of the active heat dissipaters, the centralized heat dissipater is arranged at the top of the shell layer, the other ends of the plurality of heat collecting pipelines are in heat conduction connection with the bottom heat collecting end of the centralized heat dissipater, and the top of the centralized heat dissipater exchanges heat with outside air.
Optionally, the active heat sink is a semiconductor refrigeration plate.
Through adopting above-mentioned technical scheme, adopt the initiative heat dissipation design based on semiconductor refrigeration board, the arc heat-conducting board also adopts metal heat conduction material to make, a plurality of arc heat-conducting boards can be effectively with carrying out rigid connection between interior heat transfer layer and the shell body layer, and can keep normal heat conduction, the space between a plurality of arc heat-conducting boards provides the installation space for a plurality of semiconductor refrigeration boards, wherein the interior heat transfer layer is hugged closely to the refrigeration face, the shell body layer is hugged closely to the heating face, form the heat pump effect, can satisfy the initiative heat dissipation demand under extreme temperature.
Optionally, the outer shell layer is provided with a plurality of heat dissipation fins.
By adopting the technical scheme, the heat dissipation performance and strength of the shell layer can be improved by the heat dissipation fins.
Optionally, the temperature-extreme heat dissipation controller includes first temperature sensor, second temperature sensor, third temperature sensor, analog input module and main control circuit board based on the chip, first temperature sensor is used for monitoring the temperature value of radiator fan outside air, second temperature sensor is used for monitoring the temperature value of interior heat exchange layer in-situ air, third temperature sensor is used for monitoring the temperature value of interior heat exchange layer inside, first temperature sensor, second temperature sensor and third temperature sensor pass through analog input module and main control circuit board communication connection respectively, and main control circuit board is connected with a plurality of initiative radiators and radiator fan control respectively, and according to the temperature value that first temperature sensor, second temperature sensor, third temperature sensor measured, the execution action of a plurality of initiative radiators and radiator fan is controlled respectively.
Through adopting above-mentioned technical scheme, extreme temperature heat dissipation controller realizes monitoring the temperature value of monitoring radiator fan outside air respectively, the temperature value of interior heat exchange layer in-situ air and the inside temperature value of monitoring interior heat exchange layer based on three temperature sensor, through the contrast between each temperature value, can realize the numerical comparison to the inside and outside temperature difference of centrifugal pump, provides the basis for the main control circuit board based on the chip controls the execution action of a plurality of initiative radiators respectively.
Optionally, the extreme temperature heat dissipation controller further comprises an electric control circuit breaker and an audible and visual alarm, the motor is powered through the electric control circuit breaker, the audible and visual alarm is arranged on the outer shell layer, the main control circuit board controls the execution action of the audible and visual alarm, and the on-off of the motor power supply is controlled through the electric control circuit breaker.
Through adopting above-mentioned technical scheme, audible and visual alarm's effect is that in initiative heat dissipation can't make in the heat exchange layer air temperature reduce to satisfying the suitable operating temperature of motor after, carries out audible and visual alarm, reminds the staff to handle, adopts automatically controlled circuit breaker to carry out outage operation to the motor simultaneously, reduces the damage risk that the motor continued work led to under the too high temperature.
The heat dissipation control method of the centrifugal pump with the multistage heat dissipation shell comprises the following specific steps:
setting the temperature value measured by a first temperature sensor at time t as Tx, the temperature value measured by a second temperature sensor as Ty, and the temperature value measured by a third temperature sensor as Tz, setting a primary extreme temperature judgment threshold value Ta and a secondary extreme temperature judgment threshold value Tb by a main control circuit board, and executing primary active heat dissipation action if the main control circuit board judges that Ta is less than Tx less than Tb and Tz is less than 1.1 Ty;
the primary active heat dissipation action is as follows: the main control circuit board respectively controls the plurality of active radiators to start refrigeration, and sets rated refrigeration power as P, so that the working power of the active radiator is 80% P, and controls the cooling fan to be turned off, the active radiator cools the inner heat exchange layer, and the cooling amplitude is at least 10 ℃ lower than Ty;
if the main control circuit board judges that Tx is larger than Tb, executing a secondary active heat dissipation action;
the secondary active heat dissipation action is as follows: the main control circuit board respectively controls the plurality of active radiators to work according to the maximum refrigeration power;
the first extreme temperature judgment threshold Ta is 50 ℃, and the second extreme temperature judgment threshold Tb is 70 ℃.
Through adopting above-mentioned technical scheme, when the temperature value that first temperature sensor measured is located 50 ℃ and 70 ℃ when, the temperature of the outside environment of centrifugal pump is considered to be extremely high temperature this moment, the reason that produces probably is that outside environment temperature itself is very high, secondly, the usage scene in less airtight space, for example airtight pump house, if only adopt ordinary heat dissipation this moment, because the temperature difference inside the centrifugal pump is very little with outside, the radiating efficiency is just so very low, a plurality of initiative radiators are opened at this moment, a plurality of initiative radiators can carry out initiative heat dissipation, the temperature of the interior heat transfer intra-layer air of as far as possible is controlled at suitable temperature, suitable temperature is below 80 ℃, the motor can maintain normal operating condition.
Optionally, the system also comprises an alarm temperature threshold Tc, wherein the Tc is 90 ℃, and if the main control circuit board judges that Ty is greater than Tc, an alarm power-off action is executed;
the alarm power-off action is that the main control circuit board controls the audible and visual alarm to start an alarm and controls the motor to be powered off through the electric control circuit breaker.
By adopting the technical scheme, if the temperature of the air in the inner heat exchange layer still exceeds 90 ℃ under the active heat dissipation condition, the motor is considered unsuitable for normal operation, and an alarm power-off action is required to be executed.
In summary, the present invention includes at least one of the following beneficial technical effects:
the invention can provide a centrifugal pump with a multistage heat dissipation shell and a heat dissipation control method, wherein the multistage heat dissipation shell is adopted, under the normal temperature working condition, high hot air flow in an inner heat exchange layer is subjected to heat exchange through a heat dissipation fan, and then the heat exchange between the inner heat exchange layer and an outer shell layer is performed, when an extreme temperature heat dissipation controller judges that the heat exchange can not meet the heat dissipation requirement through the monitored temperature, an active heat dissipation device is controlled to be started for active heat dissipation, a plurality of active heat dissipaters of the active heat dissipation device can actively cool the inner heat exchange layer, so that the temperature of air in the inner heat exchange layer is maintained in a range capable of ensuring the normal operation of a motor, and the normal operation requirement of the centrifugal pump under the extreme temperature environment is solved.
Drawings
FIG. 1 is a schematic perspective view of a centrifugal pump having a multi-stage heat dissipating housing according to the present invention;
FIG. 2 is a schematic perspective view of a centrifugal pump with a multistage heat dissipation housing of the present invention with a heat dissipation fan housing removed;
FIG. 3 is a schematic view of a centrifugal pump with a multi-stage heat dissipating housing of the present invention with the heat dissipating fan and heat conducting plate removed;
FIG. 4 is a schematic perspective view of a multi-stage heat dissipating housing of a centrifugal pump having a multi-stage heat dissipating housing according to the present invention;
FIG. 5 is a schematic side elevational view of FIG. 4;
FIG. 6 is a schematic view of a multi-stage heat dissipating housing of a centrifugal pump having a multi-stage heat dissipating housing of the present invention;
fig. 7 is a schematic diagram of the electrical device connection principle of the centrifugal pump with the multi-stage heat dissipation housing of the present invention.
Reference numerals illustrate: 1. a pump body; 11. a multi-stage heat dissipation housing; 111. an inner heat exchange layer; 112. an outer shell layer; 1121. a heat radiation fin; 2. an active heat sink; 21. an arc-shaped heat conducting plate; 23. a concentrated radiator; 12. a motor; 3. an impeller mechanism; 4. a heat conductive plate; 10. an extreme temperature heat dissipation controller; 101. a first temperature sensor; 102. a second temperature sensor; 103. a third temperature sensor; 104. an analog input module; 105. a main control circuit board; 106. an electric control circuit breaker; 107. an audible and visual alarm; 100. a heat radiation fan.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention discloses a centrifugal pump with a multistage heat dissipation shell and a heat dissipation control method.
Referring to fig. 1-7, embodiment 1, a centrifugal pump with a multistage heat dissipation housing, comprising a pump body 1, a heat dissipation fan 100, an impeller mechanism 3, an active heat dissipation device and an extreme temperature heat dissipation controller 10, wherein the pump body 1 comprises a multistage heat dissipation housing 11 and a motor 12, the motor 12 is arranged in the housing, the impeller mechanism 3 is arranged at one end of the multistage heat dissipation housing 11, an active output shaft of the motor 12 is in transmission connection with a power input shaft of the impeller mechanism 3 through a transmission device, and the heat dissipation fan 100 is arranged at one end of the pump body 1 and is used for accelerating heat exchange between air in the multistage heat dissipation housing 11 and outside environment air;
the multistage heat dissipation shell 11 comprises an inner heat exchange layer 111 and an outer shell layer 112, an active heat dissipation interlayer is arranged between the inner heat exchange layer 111 and the outer shell layer 112, the active heat dissipation device is provided with a plurality of active heat dissipaters 2, a plurality of active heat dissipaters 2 are respectively and uniformly arranged in a plurality of active heat dissipation interlayer, a plurality of active heat dissipater installation positions are respectively arranged in the active heat dissipation interlayer, an extreme temperature heat dissipation controller 10 is respectively in control connection with the plurality of active heat dissipaters 2, the extreme temperature heat dissipation controller 10 is respectively used for monitoring the temperature of the inner heat exchange layer 111 and the temperature of air in the inner heat exchange layer 111, and the temperature reduction range is lower than the temperature of the air in the inner heat exchange layer 111 by at least 10 ℃.
For the heat of the centrifugal pump mainly comes from the working heat of the motor 12 in the pump body 1, the common heat dissipation way is mainly the heat exchange of the shell, and the heat dissipation fan 100 is arranged at the end part to improve the heat dissipation efficiency, so that the heat dissipation efficiency can also meet the normal working requirement of the centrifugal pump under the conventional working condition, and the impeller mechanism 3 is not required to be subjected to additional heat dissipation design because the impeller mechanism 3 is usually filled with pump liquid;
however, under extreme conditions, such as extremely high external temperature, or the centrifugal pump works in a narrow space, the continuous heat accumulation leads to very high air temperature at the position where the centrifugal pump is located, this leads to the heat in the shell to be difficult to carry out heat exchange with the external air, or the heat exchange efficiency is very low, the damage risk of the motor 12 is easily increased under the continuous heat accumulation, the multistage heat dissipation shell 11 is adopted, under normal conditions, the high hot air flow inside the inner heat exchange layer 111 carries out heat exchange through the heat dissipation fan 100, then the heat exchange between the inner heat exchange layer 111 and the shell layer 112 is carried out, when the temperature of the extreme temperature heat dissipation controller 10 judges that the heat exchange is not satisfied through the monitored temperature, the active heat dissipation device needs to be started, the plurality of active heat dissipaters 2 of the active heat dissipation device can cool the inner heat exchange layer 111, and the cooling amplitude is lower than the air temperature in the inner heat exchange layer 111 by at least 10 ℃, the temperature difference of usually 15-20 ℃, even more greatly, the speed of the inner heat exchange layer 111 is accelerated, the heat absorption speed of the inner heat exchange layer 111 from the air in the inner heat exchange layer 111 is carried out through the heat exchange layer 100, the inner heat exchange layer 111 and the heat exchange between the heat exchange layer 111 and the shell layer 112 is still higher than the normal temperature, the heat exchange efficiency of the heat pump can be maintained under the normal conditions, the heat exchange condition is guaranteed, the heat exchange between the heat exchange layer and the heat pump is still can be cooled by the heat exchange layer is kept to be higher than the normal temperature, and the heat pump layer 112, and the heat exchange efficiency is kept to be higher than the heat layer is higher than the normal temperature, and the heat exchange layer is cooled by the heat layer 12, and the heat layer is cooled by the heat exchange layer has the heat temperature has high temperature has the normal temperature and has high temperature.
Embodiment 2 further comprises a pair of heat conducting plates 4, wherein the pair of heat conducting plates 4 are respectively installed at two ends of the multi-stage heat dissipation housing 11, the heat dissipation base of the heat dissipation fan 100 is installed on the outer surface of one of the heat conducting plates 4, and heat exchange is performed between the heat conducting plates 4 and air in the multi-stage heat dissipation housing 11.
The heat-conducting plate 4 is a one-way heat-conducting plate.
By adopting the end design of the single heat conducting plate, the risk of reverse heat exchange of the outside air is avoided as much as possible under the condition that the outside air temperature is extremely high, and the heat radiating fan 100 can be turned off while the active heat radiating device is turned on, so that the energy consumption is reduced.
In embodiment 3, the active heat dissipating device includes a plurality of arc-shaped heat conductive plates 21, a plurality of active heat sinks 2, a plurality of heat collecting pipes and a centralized heat sink 23, wherein the plurality of arc-shaped heat conductive plates 21 are respectively installed in the active heat dissipating interlayer, the gaps between two adjacent arc-shaped heat conductive plates 21 are active heat sink installation positions, the plurality of active heat sinks 2 are respectively installed in the active heat sink installation positions, one ends of the plurality of heat collecting pipes respectively collect heat of the hot ends of the active heat sinks 2, the centralized heat sink 23 is arranged at the top of the outer shell layer 112, the other ends of the plurality of heat collecting pipes are in heat conduction connection with the bottom heat collecting end of the centralized heat sink 23, the top of the centralized heat sink 23 exchanges heat with the outside air, and the centralized heat sink 23 can be one of a plurality of heat dissipating modes such as a semiconductor heat dissipating mode and a heat dissipating copper plate.
The active heat sink 2 is a semiconductor refrigeration plate.
The active heat dissipation design based on the semiconductor refrigeration plate is adopted, the arc-shaped heat conduction plates 21 are also made of metal heat conduction materials, the plurality of arc-shaped heat conduction plates 21 can effectively rigidly connect the inner heat exchange layer 111 with the outer shell layer 112, normal heat conduction can be kept, gaps among the plurality of arc-shaped heat conduction plates 21 provide installation spaces for the plurality of semiconductor refrigeration plates, the refrigeration surfaces are tightly attached to the inner heat exchange layer 111, the heating surfaces are tightly attached to the outer shell layer 112, a heat pump effect is formed, and the active heat dissipation requirement at extreme temperatures can be met.
In embodiment 4, the outer housing layer 112 is provided with a plurality of heat dissipation fins 1121.
The heat radiating fins 1121 can increase the heat radiating performance and strength of the outer case layer 112.
In embodiment 5, the extreme temperature heat dissipation controller 10 includes a first temperature sensor 101, a second temperature sensor 102, a third temperature sensor 103, an analog input module 104, and a chip-based main control circuit board 105, where the first temperature sensor 101 is used to monitor the temperature value of the air outside the heat dissipation fan 100, the second temperature sensor 102 is used to monitor the temperature value of the air inside the inner heat exchange layer 111, the third temperature sensor 103 is used to monitor the temperature value inside the inner heat exchange layer 111, the first temperature sensor 101, the second temperature sensor 102, and the third temperature sensor 103 are respectively in communication connection with the main control circuit board 105 through the analog input module 104, the main control circuit board 105 is respectively in control connection with the plurality of active heat sinks 2 and the heat dissipation fan 100, and the execution actions of the plurality of active heat sinks 2 and the heat dissipation fan 100 are respectively controlled according to the temperature values measured by the first temperature sensor 101, the second temperature sensor 102, and the third temperature sensor 103.
The extreme temperature heat dissipation controller 10 monitors the temperature value of the air outside the heat dissipation fan 100, the temperature value of the air in the inner heat exchange layer 111 and the temperature value inside the inner heat exchange layer 111 based on three temperature sensors respectively, and can realize the numerical comparison of the temperature difference between the inside and the outside of the centrifugal pump through the comparison between the temperature values, so that a basis is provided for the main control circuit board 105 based on a chip to control the execution actions of the plurality of active heat dissipaters 2 respectively.
In embodiment 6, the extreme temperature heat dissipation controller 10 further includes an electric control circuit breaker 106 and an audible and visual alarm 107, the motor 12 is powered by the electric control circuit breaker 106, the audible and visual alarm 107 is disposed on the outer shell layer 112, and the main control circuit board 105 controls the execution of the audible and visual alarm 107, and controls the on-off of the power supply of the motor 12 by the electric control circuit breaker 106.
The audible and visual alarm 107 is used for performing audible and visual alarm after the temperature of the air in the inner heat exchange layer 111 cannot be reduced to a proper working temperature of the motor 12 due to active heat dissipation, reminding a worker to conduct disposal, and meanwhile, the electric control circuit breaker 106 is used for conducting power-off operation on the motor 12, so that damage risk caused by continuous working of the motor 12 at an excessive temperature is reduced.
Embodiment 7 is a heat dissipation control method of a centrifugal pump having a multistage heat dissipation housing, comprising:
setting the temperature value measured by the first temperature sensor 101 at the time t as Tx, the temperature value measured by the second temperature sensor 102 as Ty, and the temperature value measured by the third temperature sensor 103 as Tz, setting a primary extreme temperature judgment threshold value Ta and a secondary extreme temperature judgment threshold value Tb by the main control circuit board 105, and executing primary active heat dissipation action if the main control circuit board 105 judges that Ta is less than Tx less than Tb and Tz is less than 1.1 Ty;
the primary active heat dissipation action is as follows: the main control circuit board 105 controls the plurality of active radiators 2 to start refrigeration respectively, and controls the working power of the active radiator 2 to be 80% P when the rated refrigeration power is set to be P, and controls the cooling fan 100 to be turned off, wherein the active radiator 2 cools the inner heat exchange layer 111, and the cooling amplitude is at least 10 ℃ lower than Ty;
if the main control circuit board 105 judges that Tx is greater than Tb, executing a secondary active heat dissipation action;
the secondary active heat dissipation action is as follows: the main control circuit board 105 controls the plurality of active heat sinks 2 to operate according to the maximum cooling power, respectively;
the first extreme temperature judgment threshold Ta is 50 ℃, and the second extreme temperature judgment threshold Tb is 70 ℃.
When the temperature value measured by the first temperature sensor 101 is between 50 ℃ and 70 ℃, the temperature of the external environment of the centrifugal pump is considered to be extremely high, and the reason for the extremely high temperature is probably that the external environment temperature is high, and the use of a small closed space, such as a closed pump house, is considered to be the reason that if only ordinary heat dissipation is adopted, the heat dissipation efficiency is low because the temperature difference between the internal temperature and the external temperature of the centrifugal pump is small, and the plurality of active heat sinks 2 are started at the moment, the plurality of active heat sinks 2 can conduct active heat dissipation, the temperature of the air in the inner heat exchange layer 111 is controlled to be the proper temperature as much as possible, and the proper temperature is lower than 80 ℃, so that the motor 12 can maintain the normal working state.
Embodiment 8 further comprises an alarm temperature threshold Tc, tc being 90 ℃, and if the main control circuit board 105 determines Ty is greater than Tc, then executing an alarm power-off action;
the alarm power-off action is that the main control circuit board 105 controls the audible and visual alarm 107 to start an alarm and controls the motor 12 to power off through the electric control circuit breaker 106.
If the temperature of the air in the inner heat exchange layer 111 still exceeds 90 ℃ under the active heat dissipation condition, the motor 12 is considered unsuitable for normal operation, and an alarm power-off action is required to be executed.
The above embodiments are not intended to limit the scope of the present invention, and therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (10)
1. Centrifugal pump with multistage heat dissipation casing, its characterized in that: the heat dissipation device comprises a pump body (1), a heat dissipation fan (100), an impeller mechanism (3), an active heat dissipation device and an extreme temperature heat dissipation controller (10), wherein the pump body (1) comprises a multistage heat dissipation shell (11) and a motor (12), the motor (12) is arranged in the shell, the impeller mechanism (3) is arranged at one end of the multistage heat dissipation shell (11), an active output shaft of the motor (12) is in transmission connection with a power input shaft of the impeller mechanism (3) through a transmission device, and the heat dissipation fan (100) is arranged at one end of the pump body (1) and used for accelerating heat exchange between air in the multistage heat dissipation shell (11) and external environment air;
multistage heat dissipation casing (11) include interior heat transfer layer (111) and shell body layer (112), set up initiative heat dissipation intermediate layer between interior heat transfer layer (111) and the shell body layer (112), initiative heat abstractor sets up a plurality of initiative radiators (2), a plurality of initiative radiators (2) are the even a plurality of initiative radiator installation positions that set up in initiative heat dissipation intermediate layer respectively, extreme temperature heat dissipation controller (10) are connected with a plurality of initiative radiators (2) control respectively, extreme temperature heat dissipation controller (10) monitor the temperature of interior heat transfer layer (111) respectively, the temperature of interior air of interior heat transfer layer (111) to be used for controlling a plurality of initiative radiators (2) and for interior heat transfer layer (111) cooling, and the cooling range is less than interior air temperature of interior heat transfer layer (111) at least 10 ℃.
2. The centrifugal pump with a multi-stage heat dissipating housing of claim 1, wherein: the heat dissipation device further comprises a pair of heat conduction plates (4), wherein the pair of heat conduction plates (4) are respectively arranged at two ends of the multistage heat dissipation shell (11), a heat dissipation base of the heat dissipation fan (100) is arranged on the outer surface of one of the heat conduction plates (4), and heat exchange is carried out between the heat conduction plates (4) and air in the multistage heat dissipation shell (11).
3. The centrifugal pump with a multi-stage heat dissipating housing of claim 2, wherein: the heat conducting plate (4) is a single heat conducting plate.
4. A centrifugal pump having a multi-stage heat dissipating housing according to claim 3, wherein: the active heat dissipation device comprises a plurality of arc heat conduction plates (21), a plurality of active heat dissipaters (2), a plurality of heat collection pipelines and a concentrated heat dissipater (23), wherein the arc heat conduction plates (21) are respectively installed in an active heat dissipation interlayer, gaps between two adjacent arc heat conduction plates (21) are active heat dissipater installation positions, the plurality of active heat dissipaters (2) are respectively installed in the active heat dissipater installation positions, one ends of the plurality of heat collection pipelines are respectively used for collecting heat of the hot ends of the active heat dissipaters (2), the concentrated heat dissipaters (23) are arranged at the top of the outer shell layer (112), the other ends of the plurality of heat collection pipelines are in heat conduction connection with the bottom heat collection ends of the concentrated heat dissipaters (23), and the top of the concentrated heat dissipaters (23) is in heat exchange with external air.
5. The centrifugal pump with a multi-stage heat dissipating housing of claim 4, wherein: the active radiator (2) is a semiconductor refrigeration plate.
6. The centrifugal pump with a multi-stage heat dissipating housing of claim 5, wherein: the outer case layer (112) is provided with a plurality of heat radiation fins (1121).
7. The centrifugal pump with a multi-stage heat dissipating housing of claim 6, wherein: the extreme temperature heat dissipation controller (10) comprises a first temperature sensor (101), a second temperature sensor (102), a third temperature sensor (103), an analog input module (104) and a main control circuit board (105) based on a chip, wherein the first temperature sensor (101) is used for monitoring the temperature value of air outside the heat dissipation fan (100), the second temperature sensor (102) is used for monitoring the temperature value of air in the inner heat exchange layer (111), the third temperature sensor (103) is used for monitoring the temperature value inside the inner heat exchange layer (111), the first temperature sensor (101), the second temperature sensor (102) and the third temperature sensor (103) are respectively in communication connection with the main control circuit board (105) through the analog input module (104), the main control circuit board (105) is respectively in control connection with the plurality of active heat sinks (2) and the heat dissipation fan (100), and the plurality of active heat sinks (2) and the execution of the heat dissipation fans (100) are respectively controlled according to the temperature values measured by the first temperature sensor (101), the second temperature sensor (102) and the third temperature sensor (103).
8. The centrifugal pump with a multi-stage heat dissipating housing of claim 7, wherein: the extreme temperature heat dissipation controller (10) further comprises an electric control circuit breaker (106) and an audible and visual alarm (107), the motor (12) is powered through the electric control circuit breaker (106), the audible and visual alarm (107) is arranged on the outer shell layer (112), and the main control circuit board (105) controls the execution action of the audible and visual alarm (107) and controls the on-off of the power supply of the motor (12) through the electric control circuit breaker (106).
9. The heat dissipation control method of the centrifugal pump with the multistage heat dissipation shell is characterized by comprising the following steps of: the centrifugal pump with the multistage heat dissipation shell is used for heat dissipation control, and the specific method is as follows:
setting the temperature value measured by a first temperature sensor (101) at time t as Tx, the temperature value measured by a second temperature sensor (102) as Ty, the temperature value measured by a third temperature sensor (103) as Tz, setting a primary extreme temperature judgment threshold value Ta and a secondary extreme temperature judgment threshold value Tb by a main control circuit board (105), and executing primary active heat dissipation action if the main control circuit board (105) judges that Ta is less than Tx less than Tb and Tz is less than 1.1 Ty;
the primary active heat dissipation action is as follows: the main control circuit board (105) respectively controls the plurality of active radiators (2) to start refrigeration, and sets rated refrigeration power as P, so that the working power of the active radiator (2) is 80% P, and controls the cooling fan (100) to be turned off, the active radiator (2) is cooled by the inner heat exchange layer (111), and the cooling amplitude is lower than Ty by at least 10 ℃;
if the main control circuit board (105) judges that Tx is larger than Tb, executing a secondary active heat dissipation action;
the secondary active heat dissipation action is as follows: the main control circuit board (105) respectively controls the plurality of active radiators (2) to work according to the maximum refrigeration power;
the first extreme temperature judgment threshold Ta is 50 ℃, and the second extreme temperature judgment threshold Tb is 70 ℃.
10. The heat dissipation control method of a centrifugal pump having a multistage heat dissipation housing according to claim 9, characterized in that: the alarm temperature threshold Tc is 90 ℃, and if the main control circuit board (105) judges that Ty is greater than Tc, the alarm power-off action is executed;
the alarm power-off action is that the main control circuit board (105) controls the audible and visual alarm (107) to start an alarm and controls the motor (12) to power off through the electric control circuit breaker (106).
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Denomination of invention: Centrifugal pump with multi-stage heat dissipation shell and heat dissipation control method Granted publication date: 20231128 Pledgee: Postal Savings Bank of China Limited Yantai Muping District sub branch Pledgor: YANTAI LONGGANG PUMP INDUSTRY Co.,Ltd. Registration number: Y2024980003684 |
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