CN102710215B - Control circuit of oil pump motor for mobile garbage compression transfer station - Google Patents
Control circuit of oil pump motor for mobile garbage compression transfer station Download PDFInfo
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- CN102710215B CN102710215B CN201210202008.7A CN201210202008A CN102710215B CN 102710215 B CN102710215 B CN 102710215B CN 201210202008 A CN201210202008 A CN 201210202008A CN 102710215 B CN102710215 B CN 102710215B
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Abstract
The invention relates to a control circuit of an oil pump motor for a mobile garbage compression transfer station. A programmable logic controller (PLC) is connected to a secondary coil of an isolating transformer; the PLC is connected with a pressure sensor and a temperature sensor; the pressure sensor is arranged on a main oil passage at the outlet of the oil pump motor; the temperature sensor is arranged in a hydraulic oil tank; cooling fans are arranged on the hydraulic oil tank, the cooling fans comprise a first cooling fan and a second cooling fan, the first cooling fan is connected to a primary coil of the isolating transformer, and the second cooling fan is connected to a mains supply; and one output end of the PLC is grounded through a contactor coil and a normally-closed switch of the temperature sensor, and the other control end of the PLC is grounded through a normally-closed contact of a thermal relay. Only when oil pressure and oil temperature are normal, the control circuit is started; and the control circuit is high in automation degree, high in safety and convenient to use.
Description
Technical field
The present invention relates to a kind of mobile garbage compressing transfer station, relate to specifically a kind of mobile garbage compressing transfer station Oil pump electrical machinery control circuit, belong to electrical design technical field.
Background technology
At present, mobile garbage compressing transfer station adopts Oil pump electrical machinery that oil pressure is provided, for the work of control oil pump motor, traditional mobile garbage compressing transfer station is by several travel switches being set on diverse location point, carrying out the operation of control oil pump motor with the action of travel switch.
In realizing process of the present invention, inventor finds at least to exist in prior art following problem, in prior art for the operation of multiple spot control oil pump motor, a plurality of travel switches need to be set on mobile garbage compressing transfer station, so just need to lay circuit, circuit is laid very complicated, also can cause failure rate to raise; On the other hand, because the size of oil pressure in oil circuit cannot be grasped, can only Pressure gauge be set on oil circuit and show, use inconvenience.
Summary of the invention
The problem to be solved in the present invention is for above problem, a kind of mobile garbage compressing transfer station Oil pump electrical machinery control circuit is provided, having overcome circuit in prior art lays complicated, failure rate raises, uses inconvenient defect, adopt after Oil pump electrical machinery control circuit of the present invention, automaticity, safe, easy to use.
For addressing the above problem, the technical solution adopted in the present invention is: a kind of mobile garbage compressing transfer station Oil pump electrical machinery control circuit, it is characterized in that: described Oil pump electrical machinery control circuit comprises the air switch being connected in series, positive and negative control switch, the output of positive and negative control switch is connected in parallel to contactor, testing circuit and isolating transformer, contactor connects Oil pump electrical machinery through thermal relay, testing circuit comprises phase sequence protection circuit, open-phase protection circuit, the first coil and the second coil, the second coil is connected with phase sequence protection circuit, the first coil is connected with open-phase protection circuit,
On the secondary coil of isolating transformer, be connected with PLC controller, PLC controller is connected with pressure sensor and temperature sensor, pressure sensor is arranged on the working connection of Oil pump electrical machinery outlet, temperature sensor is arranged in hydraulic oil container, the set point of temperature sensor is 80 ℃, hydraulic oil container is provided with cooling fan, cooling fan comprises the first cooling fan and the second cooling fan, the first cooling fan is connected on the primary coil of isolating transformer, and the second cooling fan is connected on mains supply;
An output of PLC controller is through contactor coil, temperature sensor normally closed switch ground connection, when the oil pressure in pressure sensor detects the working connection of Oil pump electrical machinery outlet is being set within the scope of oil pressure, PLC controller output run signal, contactor coil forms loop through the normally closed switch of temperature sensor, Oil pump electrical machinery operation;
Oil pressure in pressure sensor detects the working connection of Oil pump electrical machinery outlet is when setting oil pressure, and PLC controller is no longer exported run signal, and contactor coil can not form loop through the normally closed switch of temperature sensor, and Oil pump electrical machinery is out of service;
In temperature sensor detects hydraulic oil container, the temperature of hydraulic oil is higher than 80 ℃, and the normally closed switch of temperature sensor disconnects, and contactor coil can not form loop through the normally closed switch of temperature sensor, and Oil pump electrical machinery is out of service;
A control end of PLC controller is through the normally-closed contact ground connection of thermal relay, a control end of PLC controller is low level, when the running current of Oil pump electrical machinery exceeds rated current, the normally-closed contact of thermal relay disconnects, a control end of PLC controller is high level, the contactor coil dead electricity that PLC controller output end connects disconnects, and Oil pump electrical machinery is out of service.
A prioritization scheme, also connects touch control screen on described PLC controller, be used for showing parameters.
The present invention takes above technical scheme, has the following advantages: PLC controller Bonding pressure transducer, and pressure sensor is arranged on working connection, can monitor at any time by display screen, oil pressure is set, and controls the operating state of oil cylinder by oil pressure; Temperature sensor is arranged in hydraulic oil container, the first cooling fan is connected on the primary coil of isolating transformer T, the second cooling fan is connected on mains supply, with the temperature that guarantees hydraulic oil in hydraulic oil container lower than 80 ℃, an output of PLC controller forms loop through contactor K1 coil, temperature sensor normally closed switch K2, only in oil pressure, oil temperature, when normal, just start, movingization degree, safe, easy to use.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit diagram of Oil pump electrical machinery control circuit in the embodiment of the present invention;
In figure,
1-PLC controller, 2-pressure sensor, 3-working connection, 4-temperature sensor, 5-hydraulic oil container, 6-touch control screen.
Embodiment
Embodiment; as shown in Figure 1; a kind of mobile garbage compressing transfer station Oil pump electrical machinery control circuit; comprise the air switch CN1 being connected in series, positive and negative control switch QS1; the output of positive and negative control switch QS1 is connected in parallel to contactor K1, testing circuit and isolating transformer T; contactor K1 connects Oil pump electrical machinery M0 through thermal relay FR1; testing circuit comprises phase sequence protection circuit, open-phase protection circuit, coil KA1 and coil KA2; coil KA2 is connected with phase sequence protection circuit, and coil KA1 is connected with open-phase protection circuit.
On the secondary coil of isolating transformer T, be connected with PLC controller 1, PLC controller 1 is connected with pressure sensor 2 and temperature sensor 4, pressure sensor 2 is arranged on the working connection 3 of Oil pump electrical machinery M0 outlet, temperature sensor 4 is arranged in hydraulic oil container 5, the set point of temperature sensor 4 is 80 ℃, hydraulic oil container 5 is provided with cooling fan, cooling fan comprises the first cooling fan M1 and the second cooling fan M2, the first cooling fan M1 is connected on the primary coil of isolating transformer T, the second cooling fan M2 is connected on mains supply, the temperature that the first cooling fan M1 and the second cooling fan M2 start move to guarantee hydraulic oil container 5 interior hydraulic oil is always lower than 80 ℃.
An output of PLC controller 1 is through contactor K1 coil, temperature sensor 4 normally closed switch K2 ground connection, when the oil pressure in pressure sensor 2 detects the working connection 3 of Oil pump electrical machinery M0 outlet is being set within the scope of oil pressure, PLC controller 1 output run signal, contactor K1 coil forms loop through the normally closed switch K2 of temperature sensor 4, Oil pump electrical machinery M0 operation; Oil pressure in pressure sensor 2 detects the working connection 3 of Oil pump electrical machinery M0 outlet is when setting oil pressure, PLC controller 1 is no longer exported run signal, contactor K1 coil can not form loop through the normally closed switch K2 of temperature sensor 4, and Oil pump electrical machinery M0 is out of service, breaks down avoiding; The temperature that hydraulic oil container 5 interior hydraulic oil detected when temperature sensor 4 is higher than 80 ℃, the normally closed switch K2 of temperature sensor 4 disconnects, contactor K1 coil can not form loop through the normally closed switch K2 of temperature sensor 4, and Oil pump electrical machinery M0 is out of service, breaks down avoiding.
Another control end of PLC controller 1 is through the normally-closed contact K3 of thermal relay FR1 ground connection, a control end of PLC controller 1 is low level, when the running current of Oil pump electrical machinery M0 exceeds rated current, the normally-closed contact K3 of thermal relay FR1 disconnects, a control end of PLC controller 1 is high level, the contactor K1 coil losing electricity that PLC controller 1 output connects disconnects, and Oil pump electrical machinery M0 is out of service.
On PLC controller 1, also connect touch control screen 6, be used for showing parameters.
Those skilled in the art will recognize that; above-mentioned embodiment is exemplary; in order to make those skilled in the art can better understand content of the present invention; should not be understood as limiting the scope of the invention; so long as the improvement of doing according to technical solution of the present invention all falls into protection scope of the present invention.
Claims (1)
1. a mobile garbage compressing transfer station Oil pump electrical machinery control circuit, it is characterized in that: described Oil pump electrical machinery control circuit comprises the air switch (CN1) being connected in series, positive and negative control switch (QS1), the output of positive and negative control switch (QS1) is connected in parallel to contactor (K1), testing circuit and isolating transformer (T), contactor (K1) connects Oil pump electrical machinery (M0) through thermal relay (FR1), testing circuit comprises phase sequence protection circuit, open-phase protection circuit, the first coil (KA1) and the second coil (KA2), the second coil (KA2) is connected with phase sequence protection circuit, the first coil (KA1) is connected with open-phase protection circuit,
On the secondary coil of isolating transformer (T), be connected with PLC controller (1), PLC controller (1) is connected with pressure sensor (2) and temperature sensor (4), pressure sensor (2) is arranged on the working connection (3) of Oil pump electrical machinery (M0) outlet, temperature sensor (4) is arranged in hydraulic oil container (5), the set point of temperature sensor (4) is 80 ℃, hydraulic oil container (5) is provided with cooling fan, cooling fan comprises the first cooling fan (M1) and the second cooling fan (M2), the first cooling fan (M1) is connected on the primary coil of isolating transformer (T), the second cooling fan (M2) is connected on mains supply,
An output of PLC controller (1) is through contactor (K1) coil, temperature sensor (4) normally closed switch (K2) ground connection, oil pressure in pressure sensor (2) detects the working connection (3) of Oil pump electrical machinery (M0) outlet is within the scope of setting oil pressure time, PLC controller (1) output run signal, contactor (K1) coil forms loop through the normally closed switch (K2) of temperature sensor (4), Oil pump electrical machinery (M0) operation;
Oil pressure in pressure sensor (2) detects the working connection (3) of Oil pump electrical machinery (M0) outlet is during lower than setting oil pressure, PLC controller (1) is no longer exported run signal, contactor (K1) coil can not form loop through the normally closed switch (K2) of temperature sensor (4), and (M0) is out of service for Oil pump electrical machinery;
In temperature sensor (4) detects hydraulic oil container (5), the temperature of hydraulic oil is higher than 80 ℃, the normally closed switch (K2) of temperature sensor (4) disconnects, contactor (K1) coil can not form loop through the normally closed switch (K2) of temperature sensor (4), and (M0) is out of service for Oil pump electrical machinery;
Another control end of PLC controller (1) is through normally-closed contact (K3) ground connection of thermal relay (FR1), a control end of PLC controller (1) is low level, when the running current of Oil pump electrical machinery (M0) exceeds rated current, the normally-closed contact (K3) of thermal relay (FR1) disconnects, a control end of PLC controller (1) is high level, contactor (K1) coil losing electricity that PLC controller (1) output connects disconnects, and (M0) is out of service for Oil pump electrical machinery; On described PLC controller (1), also connect touch control screen (6), be used for showing parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202008.7A CN102710215B (en) | 2012-06-19 | 2012-06-19 | Control circuit of oil pump motor for mobile garbage compression transfer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202008.7A CN102710215B (en) | 2012-06-19 | 2012-06-19 | Control circuit of oil pump motor for mobile garbage compression transfer station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102710215A CN102710215A (en) | 2012-10-03 |
| CN102710215B true CN102710215B (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210202008.7A Active CN102710215B (en) | 2012-06-19 | 2012-06-19 | Control circuit of oil pump motor for mobile garbage compression transfer station |
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| Country | Link |
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| CN (1) | CN102710215B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102380244B1 (en) * | 2017-11-17 | 2022-03-28 | 엘지디스플레이 주식회사 | Apparatus for touch screen and electronic device comprising the same |
| CN112881060A (en) * | 2021-03-19 | 2021-06-01 | 正星科技股份有限公司 | Simulation test system of oiling machine assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510547A (en) * | 1982-11-12 | 1985-04-09 | Johnson Service Company | Multi-purpose compressor controller |
| CN2916723Y (en) * | 2005-12-26 | 2007-06-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Seal tester controller |
| CN201407158Y (en) * | 2009-04-29 | 2010-02-17 | 扬州柳工建设机械有限公司 | Oil temperature control mechanism for hydraulic oil in concrete conveying pump |
| CN201557068U (en) * | 2009-09-15 | 2010-08-18 | 西安陕鼓动力股份有限公司 | Control device of electromotor lift-up oil pump for fan |
-
2012
- 2012-06-19 CN CN201210202008.7A patent/CN102710215B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4510547A (en) * | 1982-11-12 | 1985-04-09 | Johnson Service Company | Multi-purpose compressor controller |
| CN2916723Y (en) * | 2005-12-26 | 2007-06-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Seal tester controller |
| CN201407158Y (en) * | 2009-04-29 | 2010-02-17 | 扬州柳工建设机械有限公司 | Oil temperature control mechanism for hydraulic oil in concrete conveying pump |
| CN201557068U (en) * | 2009-09-15 | 2010-08-18 | 西安陕鼓动力股份有限公司 | Control device of electromotor lift-up oil pump for fan |
Non-Patent Citations (2)
| Title |
|---|
| 基于PLC的移动式垃圾压缩设备液压及控制系统设计;蒋波;《CNKI优秀硕士学位论文全文库》;20120401;37-44 * |
| 蒋波.基于PLC的移动式垃圾压缩设备液压及控制系统设计.《CNKI优秀硕士学位论文全文库》.2012,37-44. |
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| Publication number | Publication date |
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| CN102710215A (en) | 2012-10-03 |
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