CN114962216A - Medium-voltage machine capable of automatically controlling exhaust temperature and control method thereof - Google Patents
Medium-voltage machine capable of automatically controlling exhaust temperature and control method thereof Download PDFInfo
- Publication number
- CN114962216A CN114962216A CN202210440128.4A CN202210440128A CN114962216A CN 114962216 A CN114962216 A CN 114962216A CN 202210440128 A CN202210440128 A CN 202210440128A CN 114962216 A CN114962216 A CN 114962216A
- Authority
- CN
- China
- Prior art keywords
- oil
- temperature
- module
- air
- exhaust
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 105
- 238000001514 detection method Methods 0.000 claims abstract description 80
- 238000000926 separation method Methods 0.000 claims abstract description 45
- 230000007613 environmental effect Effects 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 101
- 239000010687 lubricating oil Substances 0.000 abstract description 12
- 238000004945 emulsification Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/11—Outlet temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model provides an automatic well press of control row temperature, includes the box, is equipped with host computer, oil-gas separation module, oil cooling module and air cooling module in the box, and the oil cooling module includes oil cooler and oil cooling fan, and the oil-gas discharge end of host computer is linked together with the oil-gas inlet end of oil-gas separation module, and the end of giving vent to anger of oil-gas separation module is linked together with the inlet end of air cooling module, and the oil outlet end of oil-gas separation module is linked together its characterized in that with the oil inlet end of oil cooler: the oil cooling fan is a variable frequency fan, a first temperature detection device is further arranged on the oil gas exhaust end of the host, a dew point temperature control module and an environmental parameter detection module are further arranged in the box body, and the environmental parameter detection module, the first temperature detection device and the oil cooling fan are all electrically connected with the dew point temperature control module. The temperature of the main machine exhaust end of the automatic temperature control medium pressure machine can be automatically adjusted along with environmental changes, and the lubricating oil emulsification phenomenon is not easy to occur. In addition, a control method of the medium pressure machine capable of automatically controlling the exhaust temperature is also provided.
Description
Technical Field
The invention relates to the technical field of medium-voltage machines, in particular to a medium-voltage machine capable of automatically controlling exhaust temperature and a control method thereof.
Background
In the current compressor market, the main machine discharge end temperature of the medium-pressure machine is basically kept at a constant temperature according to the starting and stopping temperatures of a fan or a temperature control valve configured in the medium-pressure machine system, and the main machine discharge end temperature is usually in a small range or a constant value and cannot change the exhaust temperature along with the change of the environment. Therefore, due to changes of ambient temperature and humidity, for example, when the ambient temperature and humidity are particularly high in summer, the pressurized dew point is easy to rise, and the lubricating oil is emulsified, so that various accessory problems such as rusting and seizure of a main machine, blockage of a heat exchanger and the like are caused, and the quality of gas for customers is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the medium-pressure machine capable of automatically controlling the temperature of the exhaust end of the main machine can automatically adjust along with environmental changes, and the emulsification phenomenon of lubricating oil is not easy to occur.
The technical solution of the invention is as follows: the utility model provides an automatic well press of control row temperature, includes the box, be equipped with host computer, oil-gas separation module, oil-cooling module and air-cooled module in the box, oil-cooling module includes oil cooler and oil cooling fan, the oil-gas discharge end of host computer is linked together with the oil gas inlet end of oil-gas separation module, the end of giving vent to anger of oil-gas separation module is linked together with the inlet end of air-cooled module, the end of giving vent to anger of air-cooled module is used for the air feed, the end of giving vent to anger of oil-gas separation module is linked together with the oil-feed end of oil cooler, the oil return end of oil cooler is linked together with the oil-feed end of host computer, oil cooling fan is close to oil cooler setting, its characterized in that: the oil cooling fan is a variable frequency fan, a first temperature detection device is further arranged on the oil gas exhaust end of the host, a dew point temperature control module and an environmental parameter detection module are further arranged in the box, and the environmental parameter detection module, the first temperature detection device and the oil cooling fan are all electrically connected with the dew point temperature control module.
The working principle of the medium pressure machine capable of automatically controlling the exhaust temperature is as follows:
the main machine sucks air, and a high-pressure high-oil-gas mixture is obtained after lubrication, cooling and noise reduction of lubricating oil; the oil-gas mixture is input into the oil-gas separation module through an oil-gas exhaust end of the main machine, and gas and lubricating oil are separated by the oil-gas separation module; the gas separated by the oil-gas separation module enters the gas cooling module for cooling and temperature reduction, and is output through the gas outlet end of the gas cooling module to provide gas; the lubricating oil separated by the oil-gas separation module enters the oil cooling module for cooling, and the cooled lubricating oil returns to the main machine again through the oil return end of the oil cooling module for cyclic utilization; in the process, the dew point temperature control module monitors environmental parameters in real time through the environmental parameter detection module, and calculates the dew point temperature under pressure according to the monitored environmental parameters; calculating the expected temperature of the oil gas exhaust end of the main machine according to the dew point temperature under pressure, and ensuring that the expected temperature of the oil gas exhaust end of the main machine is higher than the dew point temperature under pressure; meanwhile, the actual temperature of the oil gas exhaust end of the host machine is detected in real time by the first temperature detection device, and then the frequency of the oil-air cooler is controlled according to the expected temperature of the oil gas exhaust end of the host machine and the actual temperature of the oil gas exhaust end of the host machine, so that the temperature of the oil-air mixture at the oil gas exhaust end of the host machine is controlled to be above the dew point temperature under pressure and is kept constant under corresponding conditions.
After adopting the structure, the invention has the following advantages:
the medium-pressure air cooler capable of automatically controlling the exhaust temperature can automatically calculate the dew point temperature under pressure in real time according to the change of the environment, controls the temperature of an oil-gas mixture at the oil-gas exhaust end of the main machine to be higher than the dew point temperature under pressure and keeps constant under corresponding conditions by controlling the frequency of the oil-air cooler, namely the temperature of the oil-gas exhaust end of the main machine can be automatically adjusted along with the change of the environment and is kept higher than the dew point temperature under pressure, so that the emulsification phenomenon of lubricating oil is not easy to occur; in addition, in order to ensure the air temperature for the back end of a client and reduce the load of a back end cooling dryer, the temperature of the gas output by the air cooling module is expected not to be too high, and in order to control the temperature of the oil-gas mixture at the oil-gas discharge end of the main engine to be higher than the dew point temperature under pressure, the oil return temperature of the oil cooling module is expected not to be too low, so that the air cooling module and the oil cooling module are structurally separated and independently controlled, and the contradiction can be well solved and the respective requirements can be met; in addition, the control process is cooperatively controlled by a dew point temperature control module, so that the device has higher automation and intelligence level and is less prone to lubricating oil emulsification.
Preferably, the air cooling module comprises an air cooler and an air cooling fan, the air cooling fan is a power frequency fan, the air outlet end of the oil-gas separation module is communicated with the air inlet end of the air cooler, the air outlet end of the air cooler is used for supplying air, and the air cooling fan is arranged close to the air cooler. The air cooling fan adopts a power frequency fan, so that the control is simpler and the cost is lower.
Preferably, the air cooling fan is normally open. The device can continuously cool the medium-pressure compressed air, ensure the air temperature for the back end of a client and reduce the load of the cold dryer.
Preferably, the environment parameter detection module comprises a second temperature detection device, a humidity detection device and an exhaust pressure detection device, the second temperature detection device and the humidity detection device are arranged in the box and used for detecting the suction temperature and humidity in the current box, the exhaust pressure detection device is arranged at the air outlet end of the oil-gas separation module and used for detecting the exhaust pressure of the air outlet end, and the environment parameter detection module is electrically connected with the dew point temperature control module, namely the second temperature detection device, the humidity detection device and the exhaust pressure detection device are electrically connected with the dew point temperature control module. The set real-time air suction temperature and humidity in the box body and the exhaust pressure of the air outlet end of the oil-gas separation module can be detected by the second temperature detection device and the humidity detection device in real time to obtain the pressurized dew point temperature, so that the pressurized dew point temperature is accurately calculated, and the temperature control of the oil-gas exhaust end of the host machine is more reliable.
Preferably, the air outlet end of the oil-gas separation module is communicated with the air inlet end of the air cooling module through a first pipeline, and the exhaust pressure detection device is arranged at one end, close to the air cooling module, of the first pipeline. The exhaust pressure detection device is arranged at the tail end of the first pipeline, so that the influence of the exhaust temperature on the accuracy of the exhaust pressure detection device can be reduced.
Preferably, the system further comprises a double frequency converter, and the dew point temperature control module and the oil cooling fan are electrically connected with the double frequency converter. After the special double frequency converter is adopted, the calculation amount of the dew point temperature control module can be reduced, so that the control instantaneity of the dew point temperature control module is better; and the double frequency converter has two optional working modes, is more flexible to use, can better achieve the effect of ensuring the constant temperature of the unit with the minimum electric energy, and has better energy-saving and power-saving effects.
Preferably, a sound insulation plate is arranged in the box body and at the air inlet end of the motor of the main machine. The arrangement can reduce the direct outward transmission of the noise in the whole machine and reduce the noise of the whole machine.
The invention also aims to solve the technical problems that: the control method of the medium pressure machine capable of automatically controlling the temperature of the exhaust end of the main machine can automatically adjust along with the environmental change, and the emulsification phenomenon of lubricating oil is not easy to occur.
The other technical solution of the invention is as follows: a control method of a medium pressure machine capable of automatically controlling exhaust temperature is characterized by comprising the following steps: it comprises the following steps:
(1) the environmental parameter detection module detects the change of the environmental parameters in real time, and meanwhile, a first temperature detection device on the oil gas exhaust end of the host detects the actual temperature of the oil gas exhaust end of the host in real time and uploads the actual temperature and the actual temperature to the dew point temperature control module;
(2) calculating the pressurized dew point temperature according to the current environmental parameters by a dew point temperature control module, calculating the expected temperature of an oil gas exhaust end of the main machine according to the pressurized dew point temperature, and setting the expected temperature of the oil gas exhaust end of the main machine to be higher than the pressurized dew point temperature;
(3) and controlling the frequency of the oil-air cooler according to the expected temperature of the oil-air discharge end of the main machine and the actual temperature of the oil-air discharge end of the main machine so as to enable the temperature of the oil-air discharge end of the main machine to reach the expected temperature and maintain the temperature under the current environmental parameters.
After the method is adopted, the invention has the following advantages:
the control method of the intermediate press capable of automatically controlling the exhaust temperature can detect the change of environmental parameters in real time and calculate the dew point temperature under pressure according to the change, so that the temperature of the oil gas exhaust end of the main machine can be automatically adjusted along with the change of the environment, and the expected temperature of the oil gas exhaust end of the main machine is set to be higher than the dew point temperature under pressure, so that the unit is not easy to have the emulsification phenomenon of lubricating oil; and the temperature of the oil gas discharge end of the main engine can be maintained at the expected temperature under the current environmental parameters, so that the temperature of the oil gas discharge end of the main engine of the medium-pressure engine all the year round is higher than the dew point temperature under pressure, continuous uninterrupted operation is realized, and the lubricating oil emulsification effect is prevented from being obvious.
Preferably, the air cooling module comprises an air cooler and an air cooling fan, the air cooling fan is a power frequency fan, an air outlet end of the oil-gas separation module is communicated with an air inlet end of the air cooler, the air outlet end of the air cooler is used for supplying air, the air cooling fan is arranged close to the air cooler, and the air cooling fan is normally opened in the step (1). The air cooling fan adopts a normally open power frequency fan, is simple and convenient to control, and can ensure the air temperature for the back end of a client and reduce the load of the back end air cooling dryer.
As preferred, environmental parameter detection module includes second temperature-detecting device, humidity detection device and exhaust pressure detection device, second temperature-detecting device and humidity detection device set up and are used for detecting the temperature of breathing in and humidity in the current box in the box, exhaust pressure detection device sets up the pressure of discharging that the end is used for detecting this end at the end of giving vent to anger of oil-gas separation module, by the change of the pressure of the end of giving vent to anger of environmental parameter detection module real-time detection temperature of breathing in, humidity in the current box and oil-gas separation module in step (1), calculate the dew point temperature under pressure by dew point temperature control module according to the temperature of breathing in, humidity in the current box and the pressure of the end of giving vent to anger of oil-gas separation module in step (2). The setting makes the calculation of the dew point temperature under pressure accurate, and the temperature control of the oil gas exhaust end of the main machine is more reliable.
Preferably, in the step (2), when the calculated dew point temperature under pressure is less than 80 ℃, setting the expected temperature of an oil gas exhaust end of the main machine to be 85 ℃, setting the opening temperature of the oil cooling fan to be 90 ℃, and setting the closing temperature of the oil cooling fan to be 80 ℃; when the calculated under-pressure dew point temperature is more than or equal to 80 ℃ and less than 115 ℃, setting the expected temperature of an oil gas exhaust end of the main machine to be the under-pressure dew point temperature plus 5 ℃, setting the starting temperature of the oil cooling fan to be the under-pressure dew point temperature plus 10 ℃, and setting the closing temperature of the oil cooling fan to be the under-pressure dew point temperature; and when the calculated dew point temperature under pressure is more than or equal to 115 ℃, setting the expected temperature of an oil gas exhaust end of the main machine to be 125 ℃, setting the starting temperature of the oil cooling fan to be 130 ℃ and setting the closing temperature of the oil cooling fan to be 120 ℃. This setting can make the temperature control effect of the oil gas row end of host computer better.
Description of the drawings:
fig. 1 is a schematic structural diagram of a medium-pressure machine for automatically controlling exhaust temperature in embodiment 1;
FIG. 2 is another schematic structural diagram of a medium-pressure engine with automatic temperature control in embodiment 1;
fig. 3 is an electrical schematic diagram of a medium-voltage machine for automatically controlling exhaust temperature in embodiment 1;
fig. 4 is a flowchart of a control method of the intermediate press machine for automatically controlling exhaust temperature in embodiment 2;
FIG. 5 is a flowchart of a control method of a middle press machine for automatically controlling a discharge temperature in embodiment 3;
FIG. 6 is a table showing operation rules of the medium-pressure dew point temperature, the expected temperature of the oil-gas discharge end of the main unit, the opening temperature of the oil cooling fan, and the closing temperature of the oil cooling fan in example 3;
in the figure: 1-a box body, 2-a main machine, 3-an oil-gas separation module, 4-an oil cooling module, 5-an air cooling module, 6-an oil cooler, 7-an oil cooling fan, 8-a first temperature detection device, 9-a dew point temperature control module, 10-an air cooler, 11-an air cooling fan, 12-a second temperature detection device, 13-a humidity detection device, 14-an exhaust pressure detection device, 15-a first pipeline, 16-a minimum pressure valve, 17-a motor air inlet end, 18-a sound insulation board, 19-an air filter assembly, 20-a second pipeline, 21-a one-way valve, 22-a double frequency converter, 23-an oil-gas exhaust end of the main machine, an oil-gas inlet end of the 24-the oil-gas separation module, an air outlet end of the 25-the oil-gas separation module and an air inlet end of the 26-an air cooler, 27-the gas outlet end of the gas cooler, 28-the oil outlet end of the oil-gas separation module, 29-the oil inlet end of the oil cooler, 30-the oil return end of the oil cooler, 31-the oil inlet end of the main machine, and 32-the oil filter.
Detailed Description
The invention is further described with reference to the following embodiments in conjunction with the accompanying drawings.
Example 1:
a medium-pressure machine capable of automatically controlling exhaust temperature comprises a box body 1, wherein a main machine 2, an oil-gas separation module 3, an oil-cooling module 4 and an air-cooling module 5 are arranged in the box body 1, the oil-cooling module 4 comprises an oil cooler 6 and an oil-cooling fan 7, an oil-gas exhaust end 23 of the main machine 2 is communicated with an oil-gas inlet end 24 of the oil-gas separation module 3, an air outlet end 25 of the oil-gas separation module 3 is communicated with an air inlet end of the air-cooling module 5, the air outlet end of the air-cooling module 5 is used for supplying air, an oil outlet end 28 of the oil-gas separation module 3 is communicated with an oil inlet end 29 of the oil cooler 6, an oil return end 30 of the oil cooler 6 is communicated with an oil inlet end 31 of the main machine 2, an oil filter 32 is generally required to be arranged between the oil return end 30 of the oil cooler 6 and the oil inlet end 31 of the main machine 2, the oil-cooling fan 7 is arranged close to the oil cooler 6, and is a variable-frequency fan, still be equipped with first temperature-detecting device 8 on the oil gas row end 23 of host computer 2, still be equipped with dew point temperature control module 9 and environmental parameter detection module in the box 1, environmental parameter detection module, first temperature-detecting device 8 and oil cooling fan 7 all are connected with dew point temperature control module 9 electricity.
The air cooling module 5 comprises an air cooler 10 and an air cooler 11, the air cooler 11 is a power frequency fan, an air outlet end 25 of the oil-gas separation module 3 is communicated with an air inlet end 26 of the air cooler 10, an air outlet end 27 of the air cooler 10 is used for supplying air, and the air cooler 11 is arranged close to the air cooler 10; the air cooling fan 11 is normally open.
The environment parameter detection module comprises a second temperature detection device 12, a humidity detection device 13 and an exhaust pressure detection device 14, wherein the second temperature detection device 12 and the humidity detection device 13 are arranged in the box body 1 and used for detecting the current suction temperature and humidity in the box body 1, the exhaust pressure detection device 14 is arranged at the air outlet end 25 of the oil-gas separation module 3 and used for detecting the exhaust pressure of the end, and the environment parameter detection module is electrically connected with the dew point temperature control module 9, namely the second temperature detection device 12, the humidity detection device 13 and the exhaust pressure detection device 14 are electrically connected with the dew point temperature control module 9; the air outlet end 25 of the oil-gas separation module 3 is communicated with the air inlet end of the air cooling module 5 through a first pipeline 15, and the exhaust pressure detection device 14 is arranged at one end, close to the air cooling module 5, of the first pipeline 15; a minimum pressure valve 16 is also provided on the first conduit 15.
A sound insulation plate 18 is arranged in the box body 1 and at the motor air inlet end 17 of the main machine 2; the main machine 2 is also provided with an air filter assembly 19 for filtering air to clean the air, and the installation of the air filter assembly 19 and the main machine 2 can be realized by adopting the prior art, which is not described again; the oil-gas discharge end 23 of the main machine 2 is communicated with the oil-gas inlet end 24 of the oil-gas separation module 3 through a second pipeline 20, and the second pipeline 20 is provided with a check valve 21 for preventing high-pressure gas from backflushing when the machine is shut down.
The dew-point temperature control module 9 and the oil cooling fan 7 are both electrically connected with the double frequency converter 22; the dew point temperature control module 9 and the double frequency converter 22 can realize data sharing, the dew point temperature control module 9 realizes a master control function, the double frequency converter 22 realizes a specific control algorithm of the frequency of the oil cooling fan 7, the double frequency converter 22 is a mature module special for fan frequency control, the prior art is adopted, the frequency of the variable frequency fan is controlled by a linear curve of the frequency converter, and the purpose of driving the oil cooling fan 7 with the minimum electric energy to achieve the effect of constant oil temperature; after the special double frequency converter 22 is adopted, the calculation amount of the dew point temperature control module 9 can be reduced, so that the control instantaneity of the dew point temperature control module 9 is better; and the double frequency converter 22 has two optional working modes, is more flexible to use, can achieve the effect of ensuring the constant temperature of the unit with the minimum electric energy, and has better energy-saving and power-saving effects.
Example 2:
a method for controlling a medium voltage machine capable of automatically controlling exhaust temperature, which is based on the medium voltage machine capable of automatically controlling exhaust temperature described in embodiment 1, and comprises the following steps:
(1) the environmental parameter detection module detects the change of the environmental parameters in real time, and the first temperature detection device 8 on the oil gas exhaust end 23 of the host machine 2 detects the actual temperature of the oil gas exhaust end 23 of the host machine 2 in real time and uploads the actual temperature and the actual temperature to the dew point temperature control module 9;
(2) the dew point temperature control module 9 calculates the dew point temperature under pressure according to the current environmental parameters, then calculates the expected temperature of the oil gas exhaust end 23 of the host machine 2 according to the dew point temperature under pressure, and sets the expected temperature of the oil gas exhaust end 23 of the host machine 2 to be higher than the dew point temperature under pressure;
(3) and controlling the frequency of the oil-air cooler 7 according to the expected temperature of the oil-air discharge end 23 of the main machine 2 and the actual temperature of the oil-air discharge end 23 of the main machine 2 so as to enable the temperature of the oil-air discharge end 23 of the main machine 2 to reach the expected temperature and be maintained under the current environmental parameters.
Example 3:
a method for controlling a medium voltage machine capable of automatically controlling exhaust temperature, which is based on the medium voltage machine capable of automatically controlling exhaust temperature described in embodiment 1, and comprises the following steps:
(1) setting the air cooling fan 11 to be normally open; the environment parameter detection module detects the current suction temperature and humidity in the box body 1 and the change of the exhaust pressure of the air outlet end 25 of the oil-gas separation module 3 in real time, and the first temperature detection device 8 on the oil-gas exhaust end 23 of the host machine 2 detects the actual temperature of the oil-gas exhaust end 23 of the host machine 2 in real time and uploads the actual temperature and the actual temperature to the dew point temperature control module 9;
(2) the dew point temperature control module 9 calculates the dew point temperature under pressure according to the current air suction temperature and humidity in the box body 1 and the exhaust pressure of the air outlet end 25 of the oil-gas separation module 3, then calculates the expected temperature of the oil-gas exhaust end 23 of the host machine 2 according to the dew point temperature under pressure, and sets the expected temperature of the oil-gas exhaust end 23 of the host machine 2 to be higher than the dew point temperature under pressure; when the calculated dew point temperature under pressure is less than 80 ℃, setting the expected temperature of the oil-gas exhaust end 23 of the main machine 2 to be 85 ℃, setting the opening temperature of the oil cooling fan 7 to be 90 ℃ and setting the closing temperature of the oil cooling fan 7 to be 80 ℃; when the calculated under-pressure dew point temperature is greater than or equal to 80 ℃ and less than 115 ℃, setting the expected temperature of the oil-gas exhaust end 23 of the main machine 2 to be the under-pressure dew point temperature plus 5 ℃, setting the opening temperature of the oil cooling fan 7 to be the under-pressure dew point temperature plus 10 ℃, and setting the closing temperature of the oil cooling fan 7 to be the under-pressure dew point temperature; when the calculated dew point temperature under pressure is not less than 115 ℃, setting the expected temperature of the oil-gas exhaust end 23 of the main machine 2 to be 125 ℃, setting the opening temperature of the oil cooling fan 7 to be 130 ℃ and setting the closing temperature of the oil cooling fan 7 to be 120 ℃; the starting temperature of the oil cooling fan 7 refers to that the oil cooling fan 7 is started when the actual temperature of the oil gas discharge end 23 of the main machine 2 reaches a first set value, the first set value is the starting temperature of the oil cooling fan 7, the closing temperature of the oil cooling fan 7 refers to that the oil cooling fan 7 is closed when the actual temperature of the oil gas discharge end 23 of the main machine 2 reaches a second set value, and the second set value is the closing temperature of the oil cooling fan 7;
(3) and controlling the frequency of the oil-air cooler 7 according to the expected temperature of the oil-air discharge end 23 of the main machine 2 and the actual temperature of the oil-air discharge end 23 of the main machine 2 so as to enable the temperature of the oil-air discharge end 23 of the main machine 2 to reach the expected temperature and maintain the temperature under the current environmental parameters.
Claims (11)
1. The medium-pressure machine capable of automatically controlling the exhaust temperature comprises a box body (1), wherein a main machine (2), an oil-gas separation module (3), an oil cooling module (4) and an air cooling module (5) are arranged in the box body (1), the oil cooling module (4) comprises an oil cooler (6) and an oil cooling fan (7), an oil-gas exhaust end (23) of the main machine (2) is communicated with an oil-gas inlet end (24) of the oil-gas separation module (3), an air outlet end (25) of the oil-gas separation module (3) is communicated with an air inlet end of the air cooling module (5), an air outlet end of the air cooling module (5) is used for supplying air, an oil outlet end (28) of the oil-gas separation module (3) is communicated with an oil inlet end (29) of the oil cooler (6), an oil return end (30) of the oil cooler (6) is communicated with an oil inlet end (31) of the main machine (2), and the oil cooling fan (7) is arranged close to the oil cooler (6), the method is characterized in that: oil cooling fan (7) are the frequency conversion fan, still be equipped with first temperature-detecting device (8) on oil gas row end (23) of host computer (2), still be equipped with dew point accuse temperature module (9) and environmental parameter detection module in box (1), environmental parameter detection module, first temperature-detecting device (8) and oil cooling fan (7) all are connected with dew point accuse temperature module (9) electricity.
2. The medium-voltage machine capable of automatically controlling exhaust temperature according to claim 1, is characterized in that: the air cooling module (5) comprises an air cooler (10) and an air cooling fan (11), the air cooling fan (11) is a power frequency fan, an air outlet end (25) of the oil-gas separation module (3) is communicated with an air inlet end (26) of the air cooler (10), an air outlet end (27) of the air cooler (10) is used for supplying air, and the air cooling fan (11) is arranged close to the air cooler (10).
3. The medium-voltage machine capable of automatically controlling exhaust temperature according to claim 2, characterized in that: the air cooling fan (11) is normally open.
4. The medium-voltage machine capable of automatically controlling exhaust temperature according to claim 1, is characterized in that: the environment parameter detection module comprises a second temperature detection device (12), a humidity detection device (13) and an exhaust pressure detection device (14), wherein the second temperature detection device (12) and the humidity detection device (13) are arranged in the box body (1) and used for detecting the suction temperature and humidity in the current box body (1), the exhaust pressure detection device (14) is arranged at the air outlet end (25) of the oil-gas separation module (3) and used for detecting the exhaust pressure of the air outlet end, the environment parameter detection module is electrically connected with the dew point temperature control module (9), and the second temperature detection device (12), the humidity detection device (13) and the exhaust pressure detection device (14) are electrically connected with the dew point temperature control module (9).
5. The medium-voltage machine capable of automatically controlling exhaust temperature according to claim 4, is characterized in that: the gas outlet end (25) of the oil-gas separation module (3) is communicated with the gas inlet end of the gas cooling module (5) through a first pipeline (15), and the exhaust pressure detection device (14) is arranged at one end, close to the gas cooling module (5), of the first pipeline (15).
6. The medium-voltage machine capable of automatically controlling exhaust temperature according to claim 1, is characterized in that: the oil-cooled water heater is characterized by further comprising a double frequency converter (22), wherein the dew point temperature control module (9) and the oil cooling fan (7) are electrically connected with the double frequency converter (22).
7. The medium-voltage machine capable of automatically controlling exhaust temperature according to claim 1, is characterized in that: and a sound insulation plate (18) is arranged in the box body (1) and at the motor air inlet end (17) of the main machine (2).
8. A control method of a medium voltage machine for automatically controlling exhaust temperature, which is based on the medium voltage machine for automatically controlling exhaust temperature of claim 1, characterized in that: it comprises the following steps:
(1) the environmental parameter detection module detects the change of the environmental parameters in real time, and meanwhile, a first temperature detection device (8) on an oil gas exhaust end (23) of the host (2) detects the actual temperature of the oil gas exhaust end (23) of the host (2) in real time and uploads the actual temperature and the actual temperature to the dew point temperature control module (9) together;
(2) the dew point temperature control module (9) calculates the dew point temperature under pressure according to the current environmental parameters, then calculates the expected temperature of the oil gas exhaust end (23) of the host (2) according to the dew point temperature under pressure, and sets the expected temperature of the oil gas exhaust end (23) of the host (2) to be higher than the dew point temperature under pressure;
(3) controlling the frequency of the oil-air cooler (7) according to the expected temperature of the oil-air discharge end (23) of the main machine (2) and the actual temperature of the oil-air discharge end (23) of the main machine (2) so as to enable the temperature of the oil-air discharge end (23) of the main machine (2) to reach the expected temperature and maintain the temperature under the current environmental parameters.
9. The control method of the medium voltage machine capable of automatically controlling the exhaust temperature according to claim 8, characterized in that: the air cooling module (5) comprises an air cooler (10) and an air cooler (11), the air cooler (11) is a power frequency fan, an air outlet end (25) of the oil-gas separation module (3) is communicated with an air inlet end (26) of the air cooler (10), an air outlet end (27) of the air cooler (10) is used for supplying air, the air cooler (11) is arranged close to the air cooler (10), and the air cooler (11) is arranged in the step (1) to be normally open.
10. The control method of the medium voltage machine capable of automatically controlling the exhaust temperature according to claim 8, characterized in that: the environment parameter detection module comprises a second temperature detection device (12), a humidity detection device (13) and an exhaust pressure detection device (14), the second temperature detection device (12) and the humidity detection device (13) are arranged in the box body (1) and are used for detecting the current air suction temperature and humidity in the box body (1), the exhaust pressure detection device (14) is arranged at the air outlet end (25) of the oil-gas separation module (3) and is used for detecting the exhaust pressure at the end, in the step (1), the ambient parameter detection module detects the current air suction temperature and humidity in the box body (1) and the change of the exhaust pressure of the air outlet end (25) of the oil-gas separation module (3) in real time, and in the step (2), the dew point temperature under pressure is calculated by the dew point temperature control module (9) according to the current air suction temperature and humidity in the box body (1) and the exhaust pressure of the air outlet end (25) of the oil-gas separation module (3).
11. The control method of the medium voltage machine capable of automatically controlling the exhaust temperature according to claim 8, characterized in that: in the step (2), when the calculated under-pressure dew point temperature is less than 80 ℃, setting the expected temperature of an oil-gas exhaust end (23) of the main machine (2) to be 85 ℃, setting the opening temperature of the oil cooling fan (7) to be 90 ℃, and setting the closing temperature of the oil cooling fan (7) to be 80 ℃; when the calculated under-pressure dew point temperature is more than or equal to 80 ℃ and less than 115 ℃, setting the expected temperature of an oil-gas exhaust end (23) of the main machine (2) to be the under-pressure dew point temperature plus 5 ℃, setting the opening temperature of the oil cooling fan (7) to be the under-pressure dew point temperature plus 10 ℃, and setting the closing temperature of the oil cooling fan (7) to be the under-pressure dew point temperature; when the calculated dew point temperature under pressure is more than or equal to 115 ℃, the expected temperature of an oil gas exhaust end (23) of the main machine (2) is set to be 125 ℃, the opening temperature of the oil cooling fan (7) is set to be 130 ℃, and the closing temperature of the oil cooling fan (7) is set to be 120 ℃.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327598 | 2022-03-30 | ||
| CN202210327598X | 2022-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114962216A true CN114962216A (en) | 2022-08-30 |
Family
ID=82979252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210440128.4A Pending CN114962216A (en) | 2022-03-30 | 2022-04-25 | Medium-voltage machine capable of automatically controlling exhaust temperature and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114962216A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009156208A (en) * | 2007-12-27 | 2009-07-16 | Hitachi Ltd | Control device of compressor |
| CN201486870U (en) * | 2009-08-04 | 2010-05-26 | 深圳寿力亚洲实业有限公司 | Screw type compressor oil path system |
| CN202023716U (en) * | 2011-03-04 | 2011-11-02 | 北京复盛机械有限公司 | Dew-point temperature control and heat recovery air compressor |
| CN109611335A (en) * | 2019-02-18 | 2019-04-12 | 广州广涡压缩机有限公司 | A kind of anti-emulsion system |
| CN208950839U (en) * | 2018-08-24 | 2019-06-07 | 上海优耐特斯压缩机有限公司 | Modular general-utility test platform |
| CN211058975U (en) * | 2019-09-26 | 2020-07-21 | 陕西秦塬纺织有限公司 | Heat energy recycling system of air compressor |
| CN211692833U (en) * | 2020-02-21 | 2020-10-16 | 上海优耐特斯压缩机有限公司 | Oil control system of oil injection screw compression main engine |
| CN217558505U (en) * | 2022-03-30 | 2022-10-11 | 宁波鲍斯能源装备股份有限公司 | Medium-voltage machine capable of automatically controlling exhaust temperature |
-
2022
- 2022-04-25 CN CN202210440128.4A patent/CN114962216A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009156208A (en) * | 2007-12-27 | 2009-07-16 | Hitachi Ltd | Control device of compressor |
| CN201486870U (en) * | 2009-08-04 | 2010-05-26 | 深圳寿力亚洲实业有限公司 | Screw type compressor oil path system |
| CN202023716U (en) * | 2011-03-04 | 2011-11-02 | 北京复盛机械有限公司 | Dew-point temperature control and heat recovery air compressor |
| CN208950839U (en) * | 2018-08-24 | 2019-06-07 | 上海优耐特斯压缩机有限公司 | Modular general-utility test platform |
| CN109611335A (en) * | 2019-02-18 | 2019-04-12 | 广州广涡压缩机有限公司 | A kind of anti-emulsion system |
| CN211058975U (en) * | 2019-09-26 | 2020-07-21 | 陕西秦塬纺织有限公司 | Heat energy recycling system of air compressor |
| CN211692833U (en) * | 2020-02-21 | 2020-10-16 | 上海优耐特斯压缩机有限公司 | Oil control system of oil injection screw compression main engine |
| CN217558505U (en) * | 2022-03-30 | 2022-10-11 | 宁波鲍斯能源装备股份有限公司 | Medium-voltage machine capable of automatically controlling exhaust temperature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202579188U (en) | Oil-spraying screw air compressor capable of recovering excess heat | |
| CN107525430B (en) | Cooling tower variable frequency fan control system and method | |
| EP3857066B1 (en) | Oil-injected multi-stage compressor system and procedure for controlling such a compressor system | |
| CN217558505U (en) | Medium-voltage machine capable of automatically controlling exhaust temperature | |
| CN108759295A (en) | A kind of condenser for refrigerator rotation speed of fan control method | |
| CN103343748A (en) | Multi-stage centrifugal compressor constant pressure control device based on PLC | |
| CN109033014A (en) | Calculation method and control method of equipment power and corresponding equipment | |
| CN114962216A (en) | Medium-voltage machine capable of automatically controlling exhaust temperature and control method thereof | |
| CN204923613U (en) | Accurate control system of refrigerating output | |
| CN114279118B (en) | Compressor oil return control method, device and equipment, water chilling unit and air conditioner | |
| CN203384078U (en) | Multistage centrifugal compressor constant pressure control device based on programmable logic controller (PLC) | |
| CN213743872U (en) | Energy-saving compressor system | |
| CN206054232U (en) | The adjustable energy-saving air compressor of distributive value | |
| CN103206808B (en) | Grinding-in device for new grouped refrigerating compressors | |
| CN203454447U (en) | Intermediate inadequacy cooling double operating conditions refrigeration system in secondary throttling | |
| CN2771712Y (en) | Energy-saving control system for central air conditioner | |
| CN200958681Y (en) | Diluted-oil pump station | |
| CN114228899A (en) | Gas supply system and method suitable for ultra-large gas layer resistance reduction ship | |
| CN112253422A (en) | Energy-saving compressor system | |
| CN212456240U (en) | Energy-saving intelligent integrated gas station | |
| CN207796527U (en) | The oil temperature two level cooling controller of dilute oil lubrication station | |
| CN106050430A (en) | Inlet air cooling control system for gas turbine | |
| CN221074617U (en) | Air-cooled oil cooling integrated device of air compressor | |
| CN216762064U (en) | Gas supply system suitable for ultra-large type gas layer drag reduction ship | |
| CN111594990A (en) | Efficient energy-saving control system for central air conditioner |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220830 |