CN112464411A - Vacuum pump heat management calculation mode - Google Patents

Vacuum pump heat management calculation mode Download PDF

Info

Publication number
CN112464411A
CN112464411A CN202011403142.4A CN202011403142A CN112464411A CN 112464411 A CN112464411 A CN 112464411A CN 202011403142 A CN202011403142 A CN 202011403142A CN 112464411 A CN112464411 A CN 112464411A
Authority
CN
China
Prior art keywords
water
calculating
radiator
volume
vacuum pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011403142.4A
Other languages
Chinese (zh)
Inventor
侯宁
李文龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Yining Environmental Protection Technology Co ltd
Original Assignee
Shandong Yining Environmental Protection Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Yining Environmental Protection Technology Co ltd filed Critical Shandong Yining Environmental Protection Technology Co ltd
Priority to CN202011403142.4A priority Critical patent/CN112464411A/en
Publication of CN112464411A publication Critical patent/CN112464411A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/08—Thermal analysis or thermal optimisation

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention discloses a vacuum pump heat management calculation method in the technical field of vacuum pumps, which comprises the following steps: the method comprises the following steps: calculating the heat dissipation area of the radiator; step two: calculating a flow parameter of the water pump; step three: calculating an air quantity parameter; step four: the volume of the auxiliary water tank is calculated, the radiator, the fan air volume, the water pump flow and the like are calculated, all accessory performance parameters and overall dimensions required by the internal circulation liquid cooling vacuum pump for achieving a cooling effect can be accurately calculated, blind tests are not needed, the purpose of achieving the test can be accurately and rapidly achieved, the product volume production is finally carried out, the efficiency and the benefit are improved, and the problems that an external pipeline is complex, the cost is high, waste water treatment is complex and the like can be solved in an area where external water collection is not easy.

Description

Vacuum pump heat management calculation mode
Technical Field
The invention discloses a vacuum pump heat management calculation mode, and particularly relates to the technical field of vacuum pumps.
Background
The vacuum pump is widely applied in industries such as industry, medical treatment, scientific experiment and the like at present, the durability of the vacuum pump is extremely important in the daily use process, but all vacuum pumps in the market at present are applied in an external circulating water cooling or direct air cooling mode such as a claw pump, a screw pump, a rotary vane pump and the like; one of the main reasons for the poor durability of products such as vacuum pumps is the excessive temperature in the cavity caused by improper cooling mode, which brings a series of overheating problems; causing the frequency of replacement and maintenance of the product to be too high. The vacuum pump receives the attribute reason of the working extraction medium material in the period from the time of stopping use to the time of using next time, so that the material is easy to be bonded and stuck in the pump due to the cooling of the material, and the restarting is difficult.
When the vacuum pump is used, if an air cooling mode is adopted, the temperature of a pump body is higher, and certain risks exist in terms of the durability of materials or the safety of users; if external water cooling is adopted, the application range of the product is reduced, the problems of complicated external pipelines, high cost, complicated wastewater treatment and the like are particularly obvious in areas where external water receiving is inconvenient.
Disclosure of Invention
The invention aims to provide a vacuum pump heat management calculation mode, which aims to solve the problems that in the use process of a vacuum pump, if an air cooling mode is adopted, the temperature of a pump body is higher, and certain risks exist in the aspects of the durability of materials or the safety of users; if external water cooling is adopted, the application range of the product is reduced, the problem that the external water receiving is not convenient and easy is particularly obvious, and the problems of complex external pipelines, high cost and complicated wastewater treatment are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a vacuum pump thermal management computing method is characterized in that: the vacuum pump thermal management calculation method comprises the following steps:
the method comprises the following steps: calculating the heat dissipation area of the radiator;
step two: calculating a flow parameter of the water pump;
step three: calculating an air quantity parameter;
step four: and calculating the volume of the auxiliary water tank.
Preferably, the calculation formula for calculating the heat dissipation area of the heat sink is as follows:
Qmax＝Q0×48
Q0＝CMΔt
Figure BDA0002813098790000021
preferably, in the formula: c is the specific heat capacity of water, M is the mass of cooling water in the jacket, and delta t is the temperature difference; qmaxIs the most scattered for the radiatorLarge heat dissipation capacity;
Figure BDA0002813098790000022
is the logarithmic mean temperature difference of the cooling medium; k is the radiator propagation coefficient; KJ/m2.h. ° c; logarithmic mean temperature difference
Figure BDA0002813098790000023
The average temperature difference of liquid and gas.
Preferably, since the radiators are in cross-flow, i.e. air and coolant, the counter-flow log mean temperature difference is usually first calculated when the log mean temperature difference is calculated
Figure BDA0002813098790000024
Multiplying by correction coefficient psi, generally psi 0.95-0.98, inlet and outlet temperature of cooling liquid is tw1，tw2The air temperature inlet and outlet temperatures are respectively ta1，ta2The calculation formula is as follows:
Figure BDA0002813098790000025
preferably, in the formula: t is tw1Is the temperature of the water inlet of the radiator; t is tw2The temperature of the water outlet of the radiator; t is ta1The temperature of the air entering the radiator; t is ta2The temperature of the air leaving the radiator; calculating to obtain a heat dissipation area S; to obtain SPractice of＝S×112％。
Preferably, the calculation formula for calculating the flow parameter of the water pump is as follows:
Figure BDA0002813098790000026
in the formula: the density of water is 1000kg/m 3-1 kg/L; v is the flow of the water pump; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; cw is the specific heat capacity of water, and Cw is 4.179kJ/(kg DEG C); deltatmThe temperature difference between the inlet water and the outlet water.
Preferably, the calculation formula of the calculated air volume parameter is as follows:
Figure BDA0002813098790000031
in the formula: v wind is the wind volume; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; γ a is air gravity; cp is the specific heat capacity of air, and Cp is 2.79 multiplied by 10 < -4 > kW/(kg DEG C); deltatmIs the difference in air temperature in and out of the heat sink.
Preferably, the calculation formula of the calculated air volume parameter is as follows:
Figure BDA0002813098790000032
in the formula: v wind is the wind volume; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; γ a is air gravity; cp is the specific heat capacity of air, and Cp is 2.79 multiplied by 10 < -4 > kW/(kg DEG C); deltatmIs the difference in air temperature in and out of the heat sink.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through calculating the radiator, the fan air volume, the water pump flow and the like, all accessory performance parameters and overall dimensions required by the internal circulation liquid cooling vacuum pump to achieve the cooling effect can be accurately calculated, blind tests are not needed, the test purpose can be accurately and rapidly achieved, the product volume production is finally carried out, the efficiency and the benefit are improved, and the problems of complex external pipelines, high cost, fussy wastewater treatment and the like can be solved in areas where external water collection is not convenient.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a vacuum pump heat management calculation method comprises the following steps:
the method comprises the following steps: calculating the heat dissipation area of the radiator;
step two: calculating a flow parameter of the water pump;
step three: calculating an air quantity parameter;
step four: and calculating the volume of the auxiliary water tank.
The calculation formula for calculating the heat dissipation area of the radiator is as follows:
Qmax＝Q0×48
Q0＝CMΔt
Figure BDA0002813098790000041
wherein C is the specific heat capacity of water, M is the mass of cooling water in the jacket, and delta t is the temperature difference; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator;
Figure BDA0002813098790000042
is the logarithmic mean temperature difference of the cooling medium; k is the radiator propagation coefficient; KJ/m2.h. ° c; logarithmic mean temperature difference
Figure BDA0002813098790000043
The average temperature difference of liquid and gas.
Where, because the radiators are in cross-flow, i.e. air and coolant, the reverse flow log mean temperature difference is typically first calculated when the log mean temperature difference is calculated
Figure BDA0002813098790000044
Multiplying by correction coefficient psi, generally psi 0.95-0.98, inlet and outlet temperature of cooling liquid is tw1，tw2The air temperature inlet and outlet temperatures are respectively ta1，ta2The calculation formula is as follows:
Figure BDA0002813098790000045
wherein, tw1Is the temperature of the water inlet of the radiator; t is tw2The temperature of the water outlet of the radiator; t is ta1The temperature of the air entering the radiator; t is ta2The temperature of the air leaving the radiator; calculating to obtain a heat dissipation area S; to obtain SPractice of＝S×112％。
The calculation formula for calculating the flow parameter of the water pump is as follows:
Figure BDA0002813098790000046
in the formula: the density of water is 1000kg/m 3-1 kg/L; v is the flow of the water pump; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; cw is the specific heat capacity of water, and Cw is 4.179kJ/(kg DEG C); deltatmThe temperature difference between the inlet water and the outlet water.
Wherein, the calculation formula for calculating the air quantity parameter is as follows:
Figure BDA0002813098790000051
in the formula: v wind is the wind volume; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; γ a is air gravity; cp is the specific heat capacity of air, and Cp is 2.79 multiplied by 10 < -4 > kW/(kg DEG C); deltatmIs the difference in air temperature in and out of the heat sink.
Wherein, the air quantity parameter calculation formula is as follows:
Figure BDA0002813098790000052
in the formula: v wind is the wind volume; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; γ a is air gravity; cp is the specific heat capacity of air, and Cp is 2.79 multiplied by 10 < -4 > kW/(kg DEG C); Δ ta is the air temperature difference in and out of the radiator.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (8)

1. A vacuum pump thermal management computing method is characterized in that: the vacuum pump thermal management calculation method comprises the following steps:
the method comprises the following steps: calculating the heat dissipation area of the radiator;
step two: calculating a flow parameter of the water pump;
step three: calculating an air quantity parameter;
step four: and calculating the volume of the auxiliary water tank.
2. A vacuum pump thermal management calculation as defined in claim 1, wherein: the calculation formula for calculating the heat dissipation area of the radiator is as follows:
Qmax＝Q0×48
Q0＝CMΔt
Figure FDA0002813098780000011
3. the calculation formula for calculating the heat dissipation area of a heat sink according to claim 2, wherein: in the formula: c is the specific heat capacity of water, M is the mass of cooling water in the jacket, and delta t is the temperature difference; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator;
Figure FDA0002813098780000012
is the logarithmic mean temperature difference of the cooling medium; k is the radiator propagation coefficient; KJ/m2.h. ° c; logarithmic mean temperature difference
Figure FDA0002813098780000013
Is prepared from liquidAverage temperature difference of gas.
4. The calculation formula for calculating the heat dissipation area of a heat sink according to claim 2, wherein: since the radiators are in cross-flow, i.e., air and coolant, it is common to first calculate the reverse log mean temperature difference when calculating the log mean temperature difference
Figure FDA0002813098780000014
Multiplying by correction coefficient psi, generally psi 0.95-0.98, inlet and outlet temperature of cooling liquid is tw1，tw2The air temperature inlet and outlet temperatures are respectively ta1，ta2The calculation formula is as follows:
Figure FDA0002813098780000015
5. the liquid-gas average temperature difference calculation formula according to claim 4, wherein: in the formula: t is tw1Is the temperature of the water inlet of the radiator; t is tw2The temperature of the water outlet of the radiator; t is ta1The temperature of the air entering the radiator; t is ta2The temperature of the air leaving the radiator; calculating to obtain a heat dissipation area S; to obtain SPractice of＝S×112％。
6. A vacuum pump thermal management calculation as defined in claim 1, wherein: the calculation formula for calculating the flow parameter of the water pump is as follows:
Figure FDA0002813098780000021
in the formula: the density of water is 1000kg/m 3-1 kg/L; v is the flow of the water pump; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; cw is the specific heat capacity of water, and Cw is 4.179kJ/(kg DEG C); Δ ttmThe temperature difference between the inlet water and the outlet water.
7. A vacuum pump thermal management calculation as defined in claim 1, wherein: the calculation formula of the calculated air quantity parameter is as follows:
Figure FDA0002813098780000022
in the formula: v wind is the wind volume; qmaxThe maximum heat dissipation capacity required to be dissipated by the radiator; γ a is air gravity; cp is the specific heat capacity of air, and Cp is 2.79 multiplied by 10 < -4 > kW/(kg DEG C); deltatmIs the difference in air temperature in and out of the heat sink.
8. A vacuum pump thermal management calculation as claimed in claim 1, wherein the calculation formula for calculating the volume of the expansion tank is as follows:
V＝(V1+V2+V3+V4)×20％
the volume of the auxiliary water tank is generally not less than 20% of the total volume of the whole cooling system, wherein: the cooling water volume of the vacuum pump is V1The cooling water volume of the water pump is V2The volume of cooling water of the radiator is about V3The water capacity of the cooling pipeline is about V4And the minimum volume of the auxiliary water tank is V.
CN202011403142.4A 2020-12-02 2020-12-02 Vacuum pump heat management calculation mode Pending CN112464411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011403142.4A CN112464411A (en) 2020-12-02 2020-12-02 Vacuum pump heat management calculation mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011403142.4A CN112464411A (en) 2020-12-02 2020-12-02 Vacuum pump heat management calculation mode

Publications (1)

Publication Number Publication Date
CN112464411A true CN112464411A (en) 2021-03-09

Family

ID=74804817

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011403142.4A Pending CN112464411A (en) 2020-12-02 2020-12-02 Vacuum pump heat management calculation mode

Country Status (1)

Country Link
CN (1) CN112464411A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117268142A (en) * 2022-10-13 2023-12-22 南通名涂环境工程有限公司 Intelligent fan system for waste heat recovery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108561221A (en) * 2018-04-03 2018-09-21 广州电力机车有限公司 Dumper water cooling system design method
CN111005798A (en) * 2019-07-10 2020-04-14 江苏大学 Fan motor rotating speed accurate control method based on heat dissipation capacity
CN111136169A (en) * 2019-12-25 2020-05-12 浙江博汇汽车部件有限公司 Parameter calculation method for cooling water channel of thermal forming multi-cavity mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108561221A (en) * 2018-04-03 2018-09-21 广州电力机车有限公司 Dumper water cooling system design method
CN111005798A (en) * 2019-07-10 2020-04-14 江苏大学 Fan motor rotating speed accurate control method based on heat dissipation capacity
CN111136169A (en) * 2019-12-25 2020-05-12 浙江博汇汽车部件有限公司 Parameter calculation method for cooling water channel of thermal forming multi-cavity mold

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘小斌: ""真空泵电动机散热不良问题分析及处理"", 《设备管理与改造》 *
郭冬冬: ""活塞式航空发动机冷却系统性能仿真与设计"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117268142A (en) * 2022-10-13 2023-12-22 南通名涂环境工程有限公司 Intelligent fan system for waste heat recovery

Similar Documents

Publication Publication Date Title
CN107270601A (en) A kind of water chilling unit control method
CN201637595U (en) Performance testing device of heat exchanger
CN204168061U (en) The combined-type water cooling system of motor and frequency converter
CN207488940U (en) A kind of computer host radiator
CN112464411A (en) Vacuum pump heat management calculation mode
WO2021249301A1 (en) Cooling liquid flow control method and system for liquid-cooled traction battery, and vehicle
CN116995337A (en) Refrigerating and heating device for energy storage battery temperature control system
CN205142760U (en) Data center cooling system with two absorbing device
CN105822455A (en) Device for preparing hot water by using waste heat of automobile engine
CN202904005U (en) Cooling device of stepless energy adjusting radar device
CN211451530U (en) Water cooling system
CN112945004A (en) Multi-circulation cooling system adopting seawater for cooling
CN210717915U (en) Industrial air cooler
CN208364538U (en) A kind of hydraulic oil cooling system for vegetable oil mill bulking equipment
CN208013880U (en) It is a kind of can intelligent temperature control laptop CPU water cooling micro-channel radiators
CN104747262A (en) Cooling water way system with mixer
Hang et al. Long-Term Reliability Test on An Air Assisted Liquid Cooling System
CN219016922U (en) Water circulation radiator
CN216818449U (en) Efficient energy-saving battery thermal management system
CN206983464U (en) Magnesium plate platemaking machine refrigeration mechanism
JP5523918B2 (en) Refrigeration system
CN220710418U (en) Refrigerating and heating device for energy storage battery temperature control system
CN111473657A (en) Anti-freezing system and method for direct air-cooling condenser
CN110986638A (en) Circulating water cooling energy-saving device with heat superconducting heat dissipation structure
CN205328744U (en) Refrigerating unit is in cooling water treatment in dry season system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210309