CN202125451U - Automatic air cooling control system for control cabinet of oil pumping machine - Google Patents
Automatic air cooling control system for control cabinet of oil pumping machine Download PDFInfo
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- CN202125451U CN202125451U CN201120239175XU CN201120239175U CN202125451U CN 202125451 U CN202125451 U CN 202125451U CN 201120239175X U CN201120239175X U CN 201120239175XU CN 201120239175 U CN201120239175 U CN 201120239175U CN 202125451 U CN202125451 U CN 202125451U
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- triode
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- oil pumping
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Abstract
An automatic air cooling control system for a control cabinet of an oil pumping machine comprises a voltage transformation module, a rectification voltage stabilization module, a temperature control circuit, a driving circuit and an air cooling fan, wherein the voltage transformation module, the rectification voltage stabilization module, the temperature control circuit, the driving circuit and the air cooling fan are connected in sequence, and the temperature control circuit controls the air cooling fan through an operational amplifier, a normally open temperature detection switch and an outage delay relay according to temperature in the control cabinet of the oil pumping machine. The outage delay relay is adopted, temperature control signals are sent to the operational amplifier through the outage delay relay to be compared, the fact that the air cooling fan is frequently started and shut down around a critical temperature value is avoided, the stable and reliable operation of the air cooling fan is guaranteed, a reliable working temperature raising space is provided for an oil pumping machine system, and the stable operation of components in the control cabinet of the oil pumping machine is guaranteed.
Description
Technical field
The utility model relates to a kind of temperature control system, the automatic air cooler control system of specifically a kind of oil pumping machine control cabinet.
Background technique
As everyone knows, oil-field oil pumper is all weather operations in the open air throughout the year, expose to the weather.Summer particularly; Under the abominable working environment of burning sun heat, temperature excursion in the oil pumping machine control cabinet cabinet provides suitable operating ambient temperature can't for the auxiliary facility circuit in the cabinet; Often cause the damage of electrical apparatus element, cause the pumping unit can't proper functioning.Usually all take oil pumping machine control cabinet is carried out wind cooling temperature lowering; Set the suitable operating ambient temperature range of pumping unit auxiliary facility circuit, when the temperature in the oil pumping machine control cabinet cabinet surpasses setting temperature, start air cooling system and lower the temperature, in temperature is reduced to the setting temperature scope, just stop air cooling system work; Solved the temperature controlled problem of circuit working in the oil pumping machine control cabinet so to a certain extent; But, when temperature when the operating temperature critical value of setting fluctuates up and down, air cooling system will damage owing to frequent starting work cause its components and parts; Not only influence the proper functioning of pumping unit, and caused property loss.
The model utility content
To above-mentioned deficiency, the utility model provides a kind of oil pumping machine control cabinet automatic air cooler control system, and it can regulate temperature in the oil pumping machine control cabinet automatically, prevents owing to temperature overheating causes the phenomenon that components and parts damage in the oil pumping machine control cabinet.
The technological scheme that its technical problem of the utility model solution is taked is: the automatic air cooler control system of oil pumping machine control cabinet; Comprise transformation module, rectifying and voltage-stabilizing module, temperature-control circuit, drive circuit and air-cooled fan; Described transformation module, rectifying and voltage-stabilizing module, temperature-control circuit, drive circuit and air-cooled fan are connected successively; It is characterized in that
Said transformation module comprises transformer T, converts low pressure 15V in order to the Ac with high pressure 380V; Said rectifying and voltage-stabilizing module comprises rectifier bridge QZ, voltage stabilizer U, inductance coil L, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and diode D1, converts stable 12V direct current in order to the Ac with 15V; Said temperature-control circuit comprises operational amplifier A, resistance R 1, resistance R 2, resistance R 3, diode D2, capacitor C 5, often opens temperature detect switch KH, time delay relay J and time delay relay normally opened contact K; Said drive circuit comprises triode Q1 and triode Q2;
Wherein, the input side joint 380V Ac of said transformer T, outlet side are connected with two input ends of rectifier bridge QZ respectively; The cathode output end of said rectifier bridge is connected cathode output end ground connection with the forward power input pin 1 of voltage stabilizer U; Output 12V VDC behind the pin 2 series inductance coil L of voltage stabilizer U, pin 3 and pin 5 direct ground connection, pin 4 is connected with the outlet side of inductance coil L; Be connected with two output terminals of rectifier bridge QZ respectively after said capacitor C 1, capacitor C 2, capacitor C 3 parallel connections; Said diode D1 is connected with ground with the input side of inductance coil L respectively; Said capacitor C 4 is connected with ground with the input side of inductance coil L respectively; Be connected with the 12V dc voltage electrode behind the positive input 3 series connection time delay relay normally opened contact K of said operational amplifier A; Ground connection behind the parallel circuit of while series diode D2 and capacitor C 5; Be connected with the 12V dc voltage electrode behind the reverse input end 2 series resistors R1, be connected with the b utmost point of triode Q1 behind the output terminal 1 series resistors R3; Saidly be connected with ground with the 12V dc voltage electrode respectively after often opening temperature detect switch KH series resistors R2; Said time delay relay J is a power-off delay relay, and its coil one end is connected often opens between temperature detect switch KH and the resistance R 2 the other end ground connection; The c utmost point of said triode Q1 is connected with the b utmost point of triode Q2, and the e utmost point is connected with pin 4 with the pin 3 of the connector head JP of air-cooled fan, and ground connection; The e utmost point of said triode Q2 is connected with the 12V dc voltage electrode, and the c utmost point is connected with pin 2 with the pin 1 of the connector head JP of air-cooled fan.
Said often opening on the radiator that temperature detect switch KH is arranged on the pumping unit thyristor.
Said triode Q1 is a NPN type triode, and triode Q2 is the positive-negative-positive triode.
The beneficial effect of the utility model is: the automatic air cooler control system of this oil pumping machine control cabinet adopts power-off delay relay; Temperature control signals is sent to operational amplifier behind power-off delay relay compare; Avoided that frequent starting stops air-cooled fan near critical temperature value; Guarantee the reliable and stable operation of air-cooled fan, guaranteed the components and parts stable operation in the oil pumping machine control cabinet, for pumping unit system provides reliable work temperature increase space.
Description of drawings
Fig. 1 is the theory diagram of the utility model;
Fig. 2 is the circuit diagram of the utility model.
Embodiment
As depicted in figs. 1 and 2; The automatic air cooler control system of this oil pumping machine control cabinet; Comprise transformation module, rectifying and voltage-stabilizing module, temperature-control circuit, drive circuit and air-cooled fan, described transformation module, rectifying and voltage-stabilizing module, temperature-control circuit, drive circuit and air-cooled fan are connected successively.
Said transformation module comprises transformer T, converts low pressure 15V in order to the Ac with high pressure 380V; Said rectifying and voltage-stabilizing module comprises voltage stabilizer U, inductance coil L, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and the diode D1 of rectifier bridge QZ, 2576 models, converts stable 12V direct current in order to the Ac with 15V; Said temperature-control circuit comprises LM358 operational amplifier A, resistance R 1, resistance R 2, resistance R 3, diode D2, capacitor C 5, be arranged on and often open temperature detect switch KH, time delay relay J and time delay relay normally opened contact K on the radiator of pumping unit thyristor; Said drive circuit comprises NPN type triode Q1 and positive-negative-positive triode Q2.
As shown in Figure 2, the input side joint 380V Ac of said transformer T, outlet side are connected with two input ends of rectifier bridge QZ respectively; The cathode output end of said rectifier bridge is connected cathode output end ground connection with the forward power input pin 1 of voltage stabilizer U; Output 12V VDC behind the pin 2 series inductance coil L of voltage stabilizer U, pin 3 and pin 5 direct ground connection, pin 4 is connected with the outlet side of inductance coil L; Be connected with two output terminals of rectifier bridge QZ respectively after said capacitor C 1, capacitor C 2, capacitor C 3 parallel connections; Said diode D1 is connected with ground with the input side of inductance coil L respectively; Said capacitor C 4 is connected with ground with the input side of inductance coil L respectively; Be connected with the 12V dc voltage electrode behind the positive input 3 series connection time delay relay normally opened contact K of said operational amplifier A; Ground connection behind the parallel circuit of while series diode D2 and capacitor C 5; Be connected with the 12V dc voltage electrode behind the reverse input end 2 series resistors R1, be connected with the b utmost point of triode Q1 behind the output terminal 1 series resistors R3; Saidly be connected with ground with the 12V dc voltage electrode respectively after often opening temperature detect switch KH series resistors R2; Said time delay relay J is a power-off delay relay, and its coil one end is connected often opens between temperature detect switch KH and the resistance R 2 the other end ground connection; The c utmost point of said triode Q1 is connected with the b utmost point of triode Q2, and the e utmost point is connected with pin 4 with the pin 3 of the connector head JP of air-cooled fan, and ground connection; The e utmost point of said triode Q2 is connected with the 12V dc voltage electrode, and the c utmost point is connected with pin 2 with the pin 1 of the connector head JP of air-cooled fan.
During work, the Ac of high pressure 380V converts low pressure 15V Ac into through transformation, and low pressure 15V Ac is the control circuit power supply through rectification, filtering and the stable 12V direct current of voltage stabilizing output.If the pumping unit system thyristor temperature of work just often; The temperature detect switch KH that often opens that is arranged on the radiator of pumping unit thyristor is in off state; The normally opened contact K of power-off delay relay J is in off state, because the voltage of the positive input 3 of LM358 operational amplifier A is lower than inverting input 2, LM358 operational amplifier A output terminal 1 is a low level; This moment, triode Q1 and triode Q2 all ended, and air-cooled fan is not worked.When if the pumping unit system thyristor temperature of work is elevated to uniform temperature; Often open temperature detect switch KH conducting; It is closed that power-off delay relay J drives normally opened contact K, and at this moment the voltage of the positive input 3 of LM358 operational amplifier A is higher than inverting input 2, and LM358 operational amplifier A output terminal 1 is a high level; Triode Q1 and the equal conducting of triode Q2, air-cooled starting fan work is carried out air-cooled cooling to oil pumping machine control cabinet.After treating the temperature reduction of pumping unit thyristor; Often open temperature detect switch KH and break off once more, but power-off delay relay does not cut off the input voltage of the positive input 3 of LM358 operational amplifier A immediately, and time-delay certain hour (can set) later stage normally opened contact K just breaks off; At this moment the voltage of the positive input 3 of LM358 operational amplifier A is lower than inverting input 2; LM358 operational amplifier A output terminal 1 is a low level, and triode Q1 and triode Q2 all end, and air-cooled fan quits work.
Like this; The utility model adopts power-off delay relay; Temperature control signals is sent to operational amplifier compare behind power-off delay relay, avoided that frequent starting stops air-cooled fan near critical temperature value, guarantee the reliable and stable operation of air-cooled fan; Guaranteed the components and parts stable operation in the oil pumping machine control cabinet, for pumping unit system provides reliable work temperature increase space.
Claims (3)
1. the automatic air cooler control system of oil pumping machine control cabinet; Comprise transformation module, rectifying and voltage-stabilizing module, temperature-control circuit, drive circuit and air-cooled fan; Described transformation module, rectifying and voltage-stabilizing module, temperature-control circuit, drive circuit and air-cooled fan are connected successively, it is characterized in that
Said transformation module comprises transformer T, converts low pressure 15V in order to the Ac with high pressure 380V; Said rectifying and voltage-stabilizing module comprises rectifier bridge QZ, voltage stabilizer U, inductance coil L, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4 and diode D1, converts stable 12V direct current in order to the Ac with 15V; Said temperature-control circuit comprises operational amplifier A, resistance R 1, resistance R 2, resistance R 3, diode D2, capacitor C 5, often opens temperature detect switch KH, time delay relay J and time delay relay normally opened contact K; Said drive circuit comprises triode Q1 and triode Q2;
Wherein, the input side joint 380V Ac of said transformer T, outlet side are connected with two input ends of rectifier bridge QZ respectively; The cathode output end of said rectifier bridge is connected cathode output end ground connection with the forward power input pin 1 of voltage stabilizer U; Output 12V VDC behind the pin 2 series inductance coil L of voltage stabilizer U, pin 3 and pin 5 direct ground connection, pin 4 is connected with the outlet side of inductance coil L; Be connected with two output terminals of rectifier bridge QZ respectively after said capacitor C 1, capacitor C 2, capacitor C 3 parallel connections; Said diode D1 is connected with ground with the input side of inductance coil L respectively; Said capacitor C 4 is connected with ground with the input side of inductance coil L respectively; Be connected with the 12V dc voltage electrode behind the positive input 3 series connection time delay relay normally opened contact K of said operational amplifier A; Ground connection behind the parallel circuit of while series diode D2 and capacitor C 5; Be connected with the 12V dc voltage electrode behind the reverse input end 2 series resistors R1, be connected with the b utmost point of triode Q1 behind the output terminal 1 series resistors R3; Saidly be connected with ground with the 12V dc voltage electrode respectively after often opening temperature detect switch KH series resistors R2; Said time delay relay J is a power-off delay relay, and its coil one end is connected often opens between temperature detect switch KH and the resistance R 2 the other end ground connection; The c utmost point of said triode Q1 is connected with the b utmost point of triode Q2, and the e utmost point is connected with pin 4 with the pin 3 of the connector head JP of air-cooled fan, and ground connection; The e utmost point of said triode Q2 is connected with the 12V dc voltage electrode, and the c utmost point is connected with pin 2 with the pin 1 of the connector head JP of air-cooled fan.
2. the automatic air cooler control system of oil pumping machine control cabinet according to claim 1 is characterized in that, said often opening on the radiator that temperature detect switch KH is arranged on the pumping unit thyristor.
3. the automatic air cooler control system of oil pumping machine control cabinet according to claim 1 is characterized in that, said triode Q1 is a NPN type triode, and triode Q2 is the positive-negative-positive triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120239175XU CN202125451U (en) | 2011-07-08 | 2011-07-08 | Automatic air cooling control system for control cabinet of oil pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120239175XU CN202125451U (en) | 2011-07-08 | 2011-07-08 | Automatic air cooling control system for control cabinet of oil pumping machine |
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| Publication Number | Publication Date |
|---|---|
| CN202125451U true CN202125451U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120239175XU Expired - Lifetime CN202125451U (en) | 2011-07-08 | 2011-07-08 | Automatic air cooling control system for control cabinet of oil pumping machine |
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| CN (1) | CN202125451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133298A1 (en) * | 2016-02-02 | 2017-08-10 | 南通贝思特机械工程有限公司 | Control circuit for cooling fan for use in cabinet |
-
2011
- 2011-07-08 CN CN201120239175XU patent/CN202125451U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017133298A1 (en) * | 2016-02-02 | 2017-08-10 | 南通贝思特机械工程有限公司 | Control circuit for cooling fan for use in cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SINOPEC OILFIELD SERVICE CORPORATION Free format text: FORMER OWNER: SHENGLI ENGINEERING CONSTRUCTION (GROUP) CORPORATION LTD. OF SHENGLI OIL FIELD Effective date: 20150203 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 257000 DONGYING, SHANDONG PROVINCE TO: 100029 CHAOYANG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150203 Address after: 100029 Beijing City, Chaoyang District Hui Street No. six twelfth floor Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 257000 No. two, 222 North Road, Dongying District, Shandong, Dongying Patentee before: Shengli Engineering Construction (Group) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |