CN205315368U - Hydraulic system of coal pulverizer - Google Patents
Hydraulic system of coal pulverizer Download PDFInfo
- Publication number
- CN205315368U CN205315368U CN201521144787.5U CN201521144787U CN205315368U CN 205315368 U CN205315368 U CN 205315368U CN 201521144787 U CN201521144787 U CN 201521144787U CN 205315368 U CN205315368 U CN 205315368U
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- China
- Prior art keywords
- hydraulic pump
- coal pulverizer
- pressure
- fuel tank
- cushion chamber
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Abstract
The utility model discloses a hydraulic system of coal pulverizer, including oil tank, motor, the 1st hydraulic pump and the 2nd hydraulic pump, be connected with the 1st check valve, the 1st proportion overflow valve and pressure sensor on the 1st hydraulic pump delivery line to be connected with the loading chamber of 3 coal pulverizer loading jars respectively through 3 the 1st energy storage wares, be connected with the 2nd check valve, the 2nd proportion overflow valve and pressure sensor on the 2nd hydraulic pump delivery line to be connected with the cushion chamber of 3 coal pulverizer loading jars respectively through 3 choke valves, 1st, time oil pipe way of the 2nd proportion overflow valve and the oil pipe way of returning of 3 the 1st energy storage wares are connected with the oil tank respectively with through cooler and the binocular time oil filter. In this system, the load chamber of load jar is controlled with high -pressure proportion overflow valve, low pressure proportion overflow valve control for the cushion chamber, and overflow when surpassing adjustment pressure can not transshipped when the messenger system runs into great load, and the cushion chamber protects the cushion chamber to be unlikely to to inhale the sky by the pressure sensor control of cushion chamber.
Description
Technical field
This utility model relates to field of hydraulic control, particularly relates to the hydraulic system of a kind of coal pulverizer.
Background technology
Coal pulverizer is mainly used in power plant, for grinding coal cinder into coal ash. Coal pulverizer hydraulic system drives hold-down cylinder, and hold-down cylinder push-pull bar, equipped with pressure head on pull bar, described pressure head pushes down the coal cinder on deep bid, and in the rotation process of deep bid, pressure head pushes down the coal cinder on deep bid all the time, and so along with rotation, big coal cinder gradually becomes coal ash. But, existing coal pulverizer hydraulic system there will be overload phenomenon when running into relatively large load (if running into stone, iron block etc.).
Summary of the invention
The technical problems to be solved in the utility model is to provide the hydraulic system of a kind of coal pulverizer that will not transship when running into relatively large load.
For this, the technical solution of the utility model is as follows:
A kind of hydraulic system of coal pulverizer, including fuel tank, motor, the 1st hydraulic pump and the 2nd hydraulic pump, the output pipe of described 1st hydraulic pump is connected to the 1st check valve, the 1st proportional pressure control valve and the 1st pressure transducer, and the LOADED CAVITY loading cylinder with 3 coal pulverizers respectively by 3 the 1st accumulators is connected; The output pipe of described 1st hydraulic pump is connected to the 2nd check valve, the 2nd proportional pressure control valve and the 2nd pressure transducer, and the cushion chamber loading cylinder with 3 coal pulverizers respectively through 3 choke valves is connected; Described 1st, the return line of the 2nd proportional pressure control valve and the return line of described 3 the 1st accumulators are connected with fuel tank with cooled device and bitubular return filter respectively.
It addition, be also equipped with temperature relay, heater and air filter on described fuel tank, when in fuel tank, the temperature of oil is too low, the oil in fuel tank is heated by described heater.
Described 1st hydraulic pump is high-pressure pump, and its outlet pressure is 16MPa; Described 2nd hydraulic pump is low-lift pump, and its outlet pressure is 7MPa.
The beneficial effects of the utility model are as follows:
In this hydraulic system, proportional pressure control valve is overlapped with two in two chambeies loading cylinder, and LOADED CAVITY high-voltage ratio overflow valve controls, and cushion chamber low pressure proportional pressure control valve controls, and the pressure of such LOADED CAVITY is monitored by the pressure transducer of loading end. Exceed the load and overflow that adjust pressure; this ensure that system pressure will not transship when running into relatively large load (if running into stone, iron block etc.); low pressure chamber (cushion chamber) can be monitored by the pressure transducer of cushion chamber; protection cushion chamber is unlikely to be emptied, and namely occurs without vacuum state.
Accompanying drawing explanation
Fig. 1 is the front view of hydraulic system of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the hydraulic system of coal pulverizer of the present utility model is illustrated.
As shown in the figure, this hydraulic system includes fuel tank 5, motor the 2, the 1st hydraulic pump and the 2nd hydraulic pump (not shown), the output pipe of described 1st hydraulic pump is connected to the 1st check valve, the 1st proportional pressure control valve and the 1st pressure transducer 3a, and the LOADED CAVITY loading cylinder with 3 coal pulverizers respectively by 3 the 1st accumulators is connected; The output pipe of described 2nd hydraulic pump is connected to the 2nd check valve, the 2nd proportional pressure control valve and the 2nd pressure transducer 3b, and the cushion chamber loading cylinder with 3 coal pulverizers respectively through 3 choke valves is connected; Described 1st, the return line of the 2nd proportional pressure control valve and the return line of described 3 the 1st accumulators are connected with fuel tank with cooled device 4 and bitubular return filter respectively.
It addition, be also equipped with temperature relay, heater and air filter on described fuel tank, when in fuel tank, the temperature of oil is too low, the oil in fuel tank is heated by described heater.
Described 1st hydraulic pump is high-pressure pump, and its outlet pressure is 16MPa; Described 2nd hydraulic pump is low-lift pump, and its outlet pressure is 7MPa. Described fuel tank is connected to the 2nd accumulator 1.
Claims (4)
1. the hydraulic system of a coal pulverizer, it is characterized in that: include fuel tank, motor, the 1st hydraulic pump and the 2nd hydraulic pump, the output pipe of described 1st hydraulic pump is connected to the 1st check valve, the 1st proportional pressure control valve and the 1st pressure transducer, and the LOADED CAVITY loading cylinder with 3 coal pulverizers respectively by 3 the 1st accumulators is connected; The output pipe of described 2nd hydraulic pump is connected to the 2nd check valve, the 2nd proportional pressure control valve and the 2nd pressure transducer, and the cushion chamber loading cylinder with 3 coal pulverizers respectively through 3 choke valves is connected; Described 1st, the return line of the 2nd proportional pressure control valve and the return line of described 3 the 1st accumulators are connected with fuel tank with cooled device and bitubular return filter respectively.
2. the hydraulic system of coal pulverizer according to claim 1, it is characterised in that: being also equipped with temperature relay, heater and air filter on described fuel tank, when in fuel tank, the temperature of oil is too low, the oil in fuel tank is heated by described heater.
3. the hydraulic system of coal pulverizer according to claim 1, it is characterised in that: described 1st hydraulic pump is high-pressure pump, and its outlet pressure is 16MPa; Described 2nd hydraulic pump is low-lift pump, and its outlet pressure is 7MPa.
4. the hydraulic system of coal pulverizer according to claim 1, it is characterised in that: described fuel tank is connected to the 2nd accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521144787.5U CN205315368U (en) | 2015-12-31 | 2015-12-31 | Hydraulic system of coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521144787.5U CN205315368U (en) | 2015-12-31 | 2015-12-31 | Hydraulic system of coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205315368U true CN205315368U (en) | 2016-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521144787.5U Active CN205315368U (en) | 2015-12-31 | 2015-12-31 | Hydraulic system of coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205315368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966273A (en) * | 2019-12-25 | 2020-04-07 | 江苏指南润滑液压科技有限公司 | Intelligent coal vertical mill single-pump bidirectional loading hydraulic system |
-
2015
- 2015-12-31 CN CN201521144787.5U patent/CN205315368U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966273A (en) * | 2019-12-25 | 2020-04-07 | 江苏指南润滑液压科技有限公司 | Intelligent coal vertical mill single-pump bidirectional loading hydraulic system |
| CN110966273B (en) * | 2019-12-25 | 2021-07-09 | 江苏指南润滑液压科技有限公司 | Intelligent coal vertical mill single-pump bidirectional loading hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 2-76, Block A, No. 2 Wuhua Road, Huayuan Industrial Zone, Nankai District, Tianjin Patentee after: Oman New Energy Technology (Tianjin) Co., Ltd. Address before: Room 2-76, Block A, No. 2 Wuhua Road, Huayuan Industrial Zone, Tianjin Binhai New Area, 300384 Patentee before: Tianjin City Oman Hydraulic Circuit Engineering Co., Ltd. |