Centralized oil supply system suitable for thermoelectric material oil press and working method of centralized oil supply system
By designing a centralized oil supply system for oil presses suitable for thermoelectric materials, the problems of large space occupation, poor refrigeration effect, low filtration accuracy, excessive ambient temperature and safety management in the prior art are solved, effectively cooling and cleaning of oil, and the efficiency and safety of the system are improved.
Patent Information
- Application Number
- CN202411858028.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-04-11
AI Technical Summary
The existing thermoelectric oil presses have problems such as large space occupation, poor refrigeration effect, low filtration accuracy, excessive ambient temperature and safety management difficulties.
A centralized oil supply system for oil presses suitable for thermoelectric materials is designed, including high-pressure integrated oil tank, oil cooling device, filter device, etc., through centralized management and efficient filtration of hydraulic pump sets, effective cooling and cleaning of oil is achieved.
It effectively reduces the oil temperature of the oil cylinder and maintains it below 45℃, improves the filtration accuracy, reduces impurities and bubbles in the oil pipe, stabilizes the oil pressure, and reduces the risk of noise and safety accidents.
Smart Images
Figure CN119802030A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of semiconductors, and in particular to a centralized oil supply system suitable for a thermoelectric material oil press and a working method thereof. Background Art
[0002] Thermoelectric materials are functional materials that can convert heat energy and electrical energy into each other. The Seebeck effect discovered in 1821 and the Peltier effect discovered in 1834 provided a theoretical basis for the application of thermoelectric energy converters and thermoelectric refrigeration. The materials used to make thermoelectric generators or thermoelectric coolers are called thermoelectric materials, which are materials that can realize the mutual conversion of electrical energy and thermal energy. Its advantages are as follows: (1) small size, light weight, strong and noiseless during operation; (2) temperature control can be within ±0.1℃; (3) no need to use CFC (CFC chlorofluorocarbon substances, Freon. It is believed to destroy the ozone layer) and will not cause any environmental pollution; (4) heat source can be recycled and converted into electrical energy (energy saving), with a long service life and easy control. Although it has many advantages, the efficiency of devices made of thermoelectric materials (<10%) is still much lower than that of traditional refrigerators or generators. Therefore, if the efficiency of these thermoelectric materials can be greatly improved, it will have a significant impact on portable coolers widely used in camping, space applications and semiconductor chip cooling. Home and industrial cooling will be possible because thermoelectric devices have no moving parts, are rugged, quiet, reliable, and avoid the use of chlorofluorocarbons that damage the ozone layer. Thermoelectric materials need to have high electrical conductivity to avoid loss of electrical power due to resistance, and also need to have low thermal conductivity so that the temperature difference between the hot and cold ends does not change due to heat conduction.
[0003] Due to the limitations of cooling effect, filtering effect, working space, safety management, etc., the hydraulic press composition of the original thermoelectric refrigeration material has the following disadvantages: ① It occupies more working space. In the same space, the number of hydraulic presses that can be installed is relatively small, resulting in limited production capacity; ② The cooling effect is poor. When pressing a thermoelectric refrigeration material, it needs to be pressed repeatedly, which takes a long time. The oil cylinder continues to move, resulting in excessively high internal oil temperature. In addition, the original equipment uses fan cooling, which has a poor effect. At the same time, the excessively high oil temperature places high demands on the quality of the oil pipe, and the oil pipe needs to prevent aging and bursting; ③ The filtering accuracy level is not high, and the overall cleanliness of the oil and components is very high; ④ There are certain requirements for the environment. With the increase in the number of equipment, the heat is concentrated in the working space, resulting in excessively high temperatures, which can easily cause employees to suffer from heatstroke, etc.; ⑤ Safety management is more difficult to control. There is a small hydraulic pump next to each device, which cannot be centrally managed, and it is easy to cause unnecessary safety accidents. Summary of the invention
[0004] In view of the problems existing in the prior art, the present invention provides a centralized oil supply system for a thermoelectric material hydraulic press and a working method thereof. The hydraulic pump group contains an oil cooling device to cool the oil, which can keep the oil temperature in the oil tank below 45°C when the oil cylinder works for a long time. The filtration level is high, and a 10um filter device is designed to filter out fine impurities in the oil circuit, reducing the unstable oil pressure caused by impurities or bubbles in the oil pipe.
[0005] The technical scheme of the present invention is: applicable to the centralized oil supply system of the thermoelectric material hydraulic press, including a high-pressure integrated oil tank, an oil cooling device, a clean oil storage barrel, a recovery oil storage barrel, a refueling switching valve, an oil change switching valve, a second ball valve, a motor oil pump group, a switch valve, a filter device, a fifth ball valve and a solenoid valve;
[0006] The oil inlet of the motor oil pump group is divided into two routes: one route is connected to the oil outlet of the clean oil storage barrel through the stainless steel pipe with the refueling switching valve, and the other route is connected to the oil outlet of the high-pressure integrated oil tank through the pipeline with the second ball valve;
[0007] The oil outlet of the motor oil pump group is connected to the oil inlet of the filter device, and the oil outlet of the filter device is divided into two paths: one is connected to the oil inlet of the recovery oil storage barrel through a stainless steel pipe with the oil change switching valve, and the other is connected to the oil inlet of the oil cooling device through a pipeline with the fifth ball valve and the solenoid valve;
[0008] The oil outlet of the oil cooling device is connected to the oil inlet of the high-pressure integrated oil tank through a pipeline with the switch valve.
[0009] Furthermore, an electromagnetic overflow valve and a pressure gauge are provided between the oil outlet of the motor oil pump group and the oil inlet of the filter device.
[0010] Furthermore, there are two high-pressure integrated oil tanks, namely a first high-pressure integrated oil tank and a second high-pressure integrated oil tank, and the oil outlet of the oil cooling device is divided into two routes: one route is connected to the oil inlet of the first high-pressure integrated oil tank through a pipeline with a third ball valve, and the other route is connected to the oil inlet of the second high-pressure integrated oil tank through a pipeline with a fourth ball valve.
[0011] Furthermore, the first high-pressure integrated oil tank and the second high-pressure integrated oil tank are connected via a pipeline with a first ball valve.
[0012] Furthermore, a heat-insulating layer is arranged outside the stainless steel tube.
[0013] Furthermore, a high-pressure oil pump group is used, and multiple oil pumps work in parallel; and the high-pressure oil pump group is set in a separate room for centralized management. Not only can it reduce noise damage, but it can also reduce overheating damage and reduce the occurrence of safety accidents. One hydraulic pump group, multiple devices work at the same time, and the stability of the pressure of each unit is not affected when used in parallel.
[0014] The present invention also provides a working method applicable to a centralized oil supply system of a thermoelectric material hydraulic press, which is specifically as follows:
[0015] Oil filling: During the initial oil filling, the second ball valve and the oil change switching valve remain closed, the fifth ball valve remains open, the solenoid valve is opened, and the oil from the clean oil storage barrel passes through the stainless steel pipe with the oil filling switching valve to the motor oil pump group, and then the oil is filtered through the filter device with a filtration accuracy of 10um. At this time, the oil passes through the fifth ball valve and the solenoid valve to the oil cooling device. The cooled oil then enters the high-pressure integrated oil tank through the switch valve;
[0016] Working: When the hydraulic equipment is working, the oil is transmitted to the hydraulic cylinders of each hydraulic equipment through the high-pressure oil pump group. The surplus oil and the oil discharged from the hydraulic cylinder flow into the oil cooling device after passing through the second ball valve, the motor oil pump group and the filter device for cooling, and then enter the high-pressure integrated oil tank for circulating cooling. The filter device keeps working to remove impurities in the oil.
[0017] Oil change: The oil needs to be replaced after a predetermined period of time. Open the second ball valve, close the fifth ball valve, close the refueling switch valve, open the oil change switch valve, and start the motor oil pump group. The oil is pumped out of the high-pressure integrated oil tank and passes through the filtering device, and finally reaches the recovery oil barrel.
[0018] Furthermore, during oil filling in step 1, if the pressure gauge shows a pressure value higher than 1.2 MPa, the electromagnetic relief valve will automatically open to relieve the pressure.
[0019] Furthermore, a reserved flange hole is reserved in the high-pressure integrated oil tank. After cleaning and drying the inside of the oil tank through the reserved flange hole, the oil filling process is repeated to enter the operating state.
[0020] The beneficial effects of the present invention are: providing a centralized oil supply system for a thermoelectric material hydraulic press and a working method thereof, wherein the hydraulic pump group contains an oil cooling device to cool the oil, and the oil temperature in the oil tank can be kept below 45°C when the oil cylinder is working for a long time. The filtration level is high, and a 10um filter device is designed to filter out fine impurities in the oil circuit, and reduce the unstable oil pressure caused by impurities or bubbles in the oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a diagram of the centralized oil supply system for thermoelectric material hydraulic presses.
[0022] In the figure: 1 is a high-pressure integrated oil tank, 2 is a high-pressure oil pump group, 3 is an oil cooling device, 4 is a clean oil storage barrel, 5 is a recovery oil storage barrel, 6 is a refueling switching valve, 7 is an oil change switching valve, 8 is a second ball valve, 9 is a motor oil pump group, 10 is a fourth ball valve, 11 is a third ball valve, 12 is a pressure gauge, 13 is an electromagnetic overflow valve, 14 is a filtering device, 15 is a fifth ball valve, 16 is a solenoid valve, and 17 is a first ball valve. DETAILED DESCRIPTION
[0023] The present invention will be further described below in conjunction with the accompanying drawings.
[0024] like Figure 1 As shown, it is suitable for the centralized oil supply system of the thermoelectric material hydraulic press, including a high-pressure integrated oil tank 1, an oil cooling device 3, a clean oil storage barrel 4, a recovery oil storage barrel 5, a refueling switching valve 6, an oil change switching valve 7, a second ball valve 8, a motor oil pump group 9, a switch valve, a filter device 14, a fifth ball valve 15 and a solenoid valve 16.
[0025] The oil inlet of the motor oil pump group 9 is divided into two routes: one route is connected to the oil outlet of the clean oil storage barrel 4 through a stainless steel pipe with the refueling switching valve 6, and the other route is connected to the oil outlet of the high-pressure integrated oil tank 1 through a pipeline with the second ball valve 8. An insulation layer is provided outside the stainless steel pipe.
[0026] The oil outlet of the motor oil pump group 9 is connected to the oil inlet of the filter device 14, and an electromagnetic overflow valve 13 and a pressure gauge 12 are also provided between the oil outlet of the motor oil pump group 9 and the oil inlet of the filter device 14. The oil outlet of the filter device 14 is divided into two routes: one route is connected to the oil inlet of the recovery oil storage barrel 5 through a stainless steel pipe with the oil change switching valve 7, and the other route is connected to the oil inlet of the oil cooling device 3 through a pipeline with the fifth ball valve 15 and the electromagnetic valve 16.
[0027] The oil outlet of the oil cooling device 3 is connected to the oil inlet of the high-pressure integrated oil tank 1 through a pipeline with the switch valve. Preferably, the high-pressure integrated oil tank 1 has two, namely the first high-pressure integrated oil tank and the second high-pressure integrated oil tank, and the oil outlet of the oil cooling device 3 is divided into two routes: one route is connected to the oil inlet of the first high-pressure integrated oil tank through a pipeline with a third ball valve 11, and the other route is connected to the oil inlet of the second high-pressure integrated oil tank through a pipeline with a fourth ball valve 10. The first high-pressure integrated oil tank and the second high-pressure integrated oil tank are connected through a pipeline with a first ball valve 17.
[0028] The centralized oil supply system for thermoelectric material hydraulic press adopts a high-pressure oil pump group 2, and multiple oil pumps work in parallel. The high-pressure oil pump group is set in a separate room for centralized management. It can not only reduce noise damage, but also reduce overheating damage and reduce the occurrence of safety accidents. One hydraulic pump group, multiple devices work at the same time, and the stability of the pressure of each device is not affected when used in parallel.
[0029] The working method applicable to the centralized oil supply system of the thermoelectric material hydraulic press is as follows:
[0030] Oil filling: During the initial oil filling, the oil starts from the clean oil storage barrel through the refueling switching valve and the stainless steel pipe to the motor oil pump group (at this time, the second ball valve 2 and the oil change switching valve remain closed; the fifth ball valve remains open, and the solenoid valve is opened. The oil pressure and pressure stability can be controlled by automatically adjusting the opening and closing size of the solenoid valve), and then the oil is filtered through the filtering device - the filtering accuracy is 10um (if the pressure gauge shows that the pressure value is higher than 1.2MPa, the electromagnetic overflow valve will automatically open to relieve the pressure); at this time, the oil passes through the fifth ball valve and the solenoid valve to reach the oil cooling device, and the cooled oil passes through the third ball valve and the fourth ball valve and enters the high-pressure integrated oil tank respectively.
[0031] Working: When the hydraulic equipment is working, the oil is transmitted to the hydraulic cylinders of each hydraulic equipment through the high-pressure oil pump group. The surplus oil and the oil discharged from the hydraulic cylinder flow into the oil cooling device for cooling after passing through the second ball valve, the motor oil pump group and the filter device, and then enter the high-pressure integrated oil tank for circulating cooling. The filter device works all the time to remove impurities in the oil.
[0032] Oil change: The oil needs to be replaced after a period of time (about 1 to 2 years), so there is a need for oil change. Open the second ball valve, close the fifth ball valve, close the refueling switch valve, open the oil change switch valve, and the motor oil pump group works. The oil is pumped out of the high-pressure integrated oil tank and passes through the filter device. Finally, it reaches the recovery oil barrel, and then the oil tank is cleaned and dried through the reserved flange hole of the high-pressure integrated oil tank. After the relevant cleaning work is completed, repeat the oil filling process and enter the operation state.
[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. Applicable to the centralized oil supply system of thermoelectric material hydraulic press, characterized by: It comprises a high-pressure integrated oil tank (1), an oil cooling device (3), a clean oil storage barrel (4), a recovery oil storage barrel (5), a refueling switching valve (6), an oil change switching valve (7), a second ball valve (8), a motor oil pump group (9), a switch valve, a filter device (14), a fifth ball valve (15) and a solenoid valve (16); The oil inlet of the motor oil pump group (9) is divided into two routes: one route is connected to the oil outlet of the clean oil storage barrel (4) through a stainless steel pipe with the refueling switching valve (6), and the other route is connected to the oil outlet of the high-pressure integrated oil tank (1) through a pipeline with the second ball valve (8); The oil outlet of the motor oil pump group (9) is connected to the oil inlet of the filter device (14), and the oil outlet of the filter device (14) is divided into two paths: one path is connected to the oil inlet of the recovery oil storage barrel (5) through a stainless steel pipe with the oil change switching valve (7), and the other path is connected to the oil inlet of the oil cooling device (3) through a pipeline with the fifth ball valve (15) and the solenoid valve (16); The oil outlet of the oil cooling device (3) is connected to the oil inlet of the high-pressure integrated oil tank (1) via a pipeline with the switch valve.
2. The centralized oil supply system for thermoelectric material hydraulic press according to claim 1 is characterized in that: An electromagnetic overflow valve (13) and a pressure gauge (12) are also provided between the oil outlet of the motor oil pump assembly (9) and the oil inlet of the filter device (14).
3. The centralized oil supply system for thermoelectric material hydraulic press according to claim 1 is characterized in that: The high-pressure integrated oil tanks (1) are two, namely a first high-pressure integrated oil tank and a second high-pressure integrated oil tank. The oil outlet of the oil cooling device (3) is divided into two routes: one route is connected to the oil inlet of the first high-pressure integrated oil tank through a pipeline with a third ball valve (11), and the other route is connected to the oil inlet of the second high-pressure integrated oil tank through a pipeline with a fourth ball valve (10).
4. The centralized oil supply system for thermoelectric material hydraulic press according to claim 2 is characterized in that: The first high-pressure integrated oil tank and the second high-pressure integrated oil tank are connected via a pipeline with a first ball valve (17).
5. The centralized oil supply system for thermoelectric material hydraulic press according to claim 1 is characterized in that: A heat-insulating layer is arranged outside the stainless steel pipe.
6. The centralized oil supply system for thermoelectric material hydraulic press according to claim 1 is characterized in that: A high-pressure oil pump group is used, and multiple oil pumps work in parallel; and the high-pressure oil pump group is set in a separate room for centralized management.
7. The working method of the centralized oil supply system for thermoelectric material hydraulic presses according to any one of claims 1 to 6, characterized in that: The details are as follows: Oil filling: During the initial oil filling, the second ball valve and the oil change switching valve remain closed, the fifth ball valve remains open, the solenoid valve is opened, and the oil from the clean oil storage barrel passes through the stainless steel pipe with the oil filling switching valve to the motor oil pump group, and then the oil is filtered through the filter device with a filtration accuracy of 10um. At this time, the oil passes through the fifth ball valve and the solenoid valve to the oil cooling device. The cooled oil then enters the high-pressure integrated oil tank through the switch valve; Working: When the hydraulic equipment is working, the oil is transmitted to the hydraulic cylinders of each hydraulic equipment through the high-pressure oil pump group. The surplus oil and the oil discharged from the hydraulic cylinder flow into the oil cooling device after passing through the second ball valve, the motor oil pump group and the filter device for cooling, and then enter the high-pressure integrated oil tank for circulating cooling. The filter device keeps working to remove impurities in the oil. Oil change: The oil needs to be replaced after a predetermined period of time. Open the second ball valve, close the fifth ball valve, close the refueling switch valve, open the oil change switch valve, and start the motor oil pump group. The oil is pumped out of the high-pressure integrated oil tank and passes through the filtering device, and finally reaches the recovery oil barrel.
8. The working method applicable to the centralized oil supply system of thermoelectric material hydraulic press according to claim 7 is characterized in that: When filling oil in step 1, if the pressure gauge shows a pressure value higher than 1.2MPa, the electromagnetic relief valve will automatically open to relieve the pressure.
9. The working method applicable to the centralized oil supply system of thermoelectric material hydraulic press according to claim 7 is characterized in that: A reserve flange hole is reserved in the high-pressure integrated oil tank. After cleaning and drying the inside of the oil tank through the reserve flange hole, the oil filling process is repeated to enter the operating state.