CN201991755U - Temperature controlling device for cooling water of air compressor - Google Patents
Temperature controlling device for cooling water of air compressor Download PDFInfo
- Publication number
- CN201991755U CN201991755U CN2011200727126U CN201120072712U CN201991755U CN 201991755 U CN201991755 U CN 201991755U CN 2011200727126 U CN2011200727126 U CN 2011200727126U CN 201120072712 U CN201120072712 U CN 201120072712U CN 201991755 U CN201991755 U CN 201991755U
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- contactor
- alternating
- cooling tower
- current contactor
- blower fan
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Abstract
The utility model provides a temperature controlling device for cooling water of an air compressor. The temperature controlling device comprises a power-frequency power supply, as well as a temperature sensor, a PID (Proportion Integration Differentiation) temperature control meter and a frequency converter which are connected in sequence, wherein the power-frequency power supply is connected with a first alternating-current contactor and a third alternating-current contactor respectively; the output end of the frequency converter is connected a second alternating-current contactor and a fourth alternating-current contactor; the output ends of both the first alternating-current contactor and the second alternating-current contactor are connected with a first cooling tower fan; the output ends of both the third alternating-current contactor and the fourth alternating-current contactor are connected with a second cooling tower fan; the power-frequency power supply is also connected with the frequency converter; and a change-over switch controls the first alternating-current contactor, the second alternating-current contactor, the third alternating-current contactor and the fourth alternating-current contactor. The temperature controlling device is added with one change-over switch, so that the undisturbed change-over of the two cooling tower fans between variable frequency and power frequency as well as precise control on temperature is realized; and the temperature controlling device is simple to operate, reliable in running and easy to maintain.
Description
[technical field]
The utility model relates to a kind of air compressor supplementary equipment, particularly a kind of air compressor cooling water temperature control device.
[background technique]
At present, air compressor equipment has all been used in a lot of large scale industries, and its cooling water system is very crucial, now generally cools off by blower fan of cooling tower, the using and the reserved, but to winter, it is too many to open an air compressor equipment, do not open, water temperature is too high again, so the frequency conversion temperature regulation occurred.The frequency conversion temperature regulation has two kinds, and a kind of is to regulate separately with two frequency conversions, invests greatlyyer, and in summer, frequency conversion operates in power frequency substantially, loses meaning, has frequency conversion to be out of order again, and service cycle is long, and there is hidden danger in the safe operation of air compressor equipment.Another kind is the special-purpose frequency conversion of utilization constant pressure water supply, and one drag two can be realized two blower fan of cooling tower of a frequency conversion band, realizes that power frequency operation and converting operation switch; But this mode frequency conversion parameter is loaded down with trivial details, and the panel throw over switch is too many, the Operation and Maintenance that complicated operation inconvenience is daily.
[model utility content]
The technical problems to be solved in the utility model is to provide a kind of air compressor cooling water temperature control device simple to operate.
The utility model is achieved in that a kind of air compressor cooling water temperature control device, comprise a power frequency supply and the temperature transducer that is connected successively, PID temperature control table and a frequency variator, it is characterized in that: described power frequency supply links to each other with the 3rd A.C. contactor KM3 with the first A.C. contactor KM1 respectively, the output terminal of described frequency variator links to each other with the 4th A.C. contactor KM4 with the second A.C. contactor KM2 respectively, and the output terminal of the described first A.C. contactor KM1 and the second A.C. contactor KM2 all is connected with first blower fan of cooling tower; The output terminal of described the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4 all is connected with second blower fan of cooling tower; Described power frequency supply also is connected with described frequency variator, and a throw over switch is controlled the described first A.C. contactor KM1, the second A.C. contactor KM2, the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4.
Further, the control coil two ends of the described second A.C. contactor KM2 and be connected to very first time relay; The control coil two ends of described the 4th A.C. contactor KM4 also are connected to second time relay.
Advantage of the present utility model is: the utility model by a throw over switch, a power frequency supply and in be provided with a PID temperature control table and a frequency variator, one throw over switch is controlled the described first A.C. contactor KM1, the second A.C. contactor KM2, the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4, realize the frequency conversion of two blower fan of cooling tower and the no disturbance switching and the accuracy control over temperature of power frequency, and the utility model simple to operate, reliable, be easy to safeguard.
[description of drawings]
Fig. 1 is the structural representation of the utility model air compressor cooling water temperature control device.
Fig. 2 is throw over switch one embodiment's of the utility model air compressor cooling water temperature control device a schematic representation.
[embodiment]
See also shown in Figure 1, a kind of air compressor cooling water temperature control device, comprise a power frequency supply 1 and the temperature transducer 2 that is connected successively, PID temperature control table 3 and a frequency variator 4, described power frequency supply 1 links to each other with the 3rd A.C. contactor KM3 (6) with the first A.C. contactor KM1 (5) respectively, the output terminal of described frequency variator 4 links to each other with the 4th A.C. contactor KM4 (8) with the second A.C. contactor KM2 (7) respectively, and the output terminal of the described first A.C. contactor KM1 (5) and the second A.C. contactor KM2 (7) all is connected with first blower fan of cooling tower 9; The output terminal of described the 3rd A.C. contactor KM3 (6) and the 4th A.C. contactor KM4 (8) all is connected with second blower fan of cooling tower 10; Described power frequency supply 1 also is connected with described frequency variator 4, a throw over switch 11 the control described first A.C. contactor KM1 (5), the second A.C. contactor KM2 (7), the 3rd A.C. contactor KM3 (6) and the 4th A.C. contactor KM4 (8).Further, the control coil two ends (not shown) of the described second A.C. contactor KM2 (7) and be connected to very first time relay K T1 (12); The control coil two ends (not shown) of described the 4th A.C. contactor KM4 (8) also are connected to second time relay KT2 (13).
Below in conjunction with examples of implementation the utility model is described further.Wherein a throw over switch specifically comprises 4 switch contact LW1-2, LW3-4, LW5-6, LW7-8, for better explanation, some auxiliary switches have been increased in the present embodiment, as shown in Figure 2, its auxiliary switch comprises: start button SB1, SB3, stop button SB2, SB4, its throw over switch can be realized the third gear function, is respectively: A, first blower fan of cooling tower automatically/second blower fan of cooling tower is manual; B, first blower fan of cooling tower, second blower fan of cooling tower are manual; C, second blower fan of cooling tower automatically/first blower fan of cooling tower is manual.(annotate: be meant that automatically blower fan of cooling tower is dragged by frequency conversion, operation frequency changes automatically with temperature.Be meant that manually blower fan of cooling tower is dragged by power frequency, operation frequency is 50Hz fixedly, and the start and stop of blower fan of cooling tower are controlled by startup stop button separately.Wherein the conversion of blower fan of cooling tower operation is undisturbed, does not promptly influence the running state of existing operation blower fan of cooling tower.)
As shown in Figure 2, its third gear function is achieved in that A) first blower fan of cooling tower automatically/during the second blower fan of cooling tower manual position, throw over switch contact LW1-2, the LW7-8 closure, LW3-4, LW5-6 disconnects, and presses start button SB1, through the LW7-8 contact, second A.C. contactor KM2 (7) closure, very first time relay K T1 (12) closure, first blower fan of cooling tower connects frequency variator output, KT1 (12) is after one time of time-delay (preventing that blower fan of cooling tower from causing the variable frequency starting overcurrent at fast state), KT1 contact (not shown) closure, frequency variator starts, and first blower fan of cooling tower operates in automatically, press stop button SB2, the second A.C. contactor KM2 (7) disconnects, and very first time relay K T1 (12) disconnects, and first blower fan of cooling tower stops, KT1 contact (not shown) disconnects, and frequency variator stops; Press start button SB3, through the LW1-2 contact, the 3rd A.C. contactor KM3 (6) closure, second blower fan of cooling tower connects power frequency supply, carries out power frequency operation, presses stop button SB2, and second blower fan of cooling tower stops.
B) when first blower fan of cooling tower, the second blower fan of cooling tower manual position, throw over switch contact LW1-2, LW3-4 closure, LW5-6, LW7-8 disconnects, press start button SB1, through the LW3-4 contact, first A.C. contactor KM1 (5) closure, first blower fan of cooling tower connects power frequency supply, carry out power frequency operation, press stop button SB2, first blower fan of cooling tower stops; Because throw over switch contact LW1-2, the effect of LW5-6, state first blower fan of cooling tower automatically/when the second blower fan of cooling tower manual position (being the A shelves in the third gear) becomes first blower fan of cooling tower, the second blower fan of cooling tower manual position (being the B shelves in the third gear) in the transfer process state constant, the running state of second blower fan of cooling tower (power frequency operation) does not influence, and has promptly realized no disturbance switching.
C) second blower fan of cooling tower automatically/during the first blower fan of cooling tower manual position, throw over switch contact LW3-4, the LW5-6 closure, LW1-2, LW7-8 disconnects, because throw over switch contact LW3-4, the effect of LW7-8, state first blower fan of cooling tower, the second blower fan of cooling tower manual position (being the B shelves in the third gear) become second blower fan of cooling tower automatically/transfer process of the first blower fan of cooling tower manual position (being the C shelves in the third gear) in state constant, the running state of first blower fan of cooling tower (power frequency operation) does not influence, and has promptly realized no disturbance switching; Press start button SB3, through the LW5-6 contact, the 4th A.C. contactor KM4 (8) closure, second time relay KT2 (13) closure, second blower fan of cooling tower connects frequency variator output, KT2 (13) is after one time of time-delay (preventing that blower fan of cooling tower from causing the variable frequency starting overcurrent at fast state), KT2 contact (not shown) closure, frequency variator starts, and second blower fan of cooling tower operates in automatically, press stop button SB4, the 4th A.C. contactor KM4 (8) disconnects, and second time relay KT2 (13) disconnects, and second blower fan of cooling tower stops, KT2 contact (not shown) disconnects, and frequency variator stops.
Wherein shown in the following form 1 of the corresponding method of operation of Fig. 2:
Form 1
In summer, directly to beat in first blower fan of cooling tower, the second blower fan of cooling tower manual position (being the B shelves in the third gear), frequency variator is shut down.When being cold, beat first blower fan of cooling tower automatically/the second blower fan of cooling tower manual position (being the A shelves in the third gear) or second blower fan of cooling tower automatically/the first blower fan of cooling tower manual position (being the C shelves in the third gear), cooperate again temperature transducer, in be provided with the MCU of PID temperature control table, realized that like this power frequency operation and converting operation do not have disturbance and switch, simple to operate, circuit is clear, and is easy to maintenance.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (2)
1. air compressor cooling water temperature control device, comprise a power frequency supply and the temperature transducer that is connected successively, PID temperature control table and a frequency variator, it is characterized in that: described power frequency supply links to each other with the 3rd A.C. contactor KM3 with the first A.C. contactor KM1 respectively, the output terminal of described frequency variator links to each other with the 4th A.C. contactor KM4 with the second A.C. contactor KM2 respectively, and the output terminal of the described first A.C. contactor KM1 and the second A.C. contactor KM2 all is connected with first blower fan of cooling tower; The output terminal of described the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4 all is connected with second blower fan of cooling tower; Described power frequency supply also is connected with described frequency variator, and a throw over switch is controlled the described first A.C. contactor KM1, the second A.C. contactor KM2, the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4.
2. air compressor cooling water temperature control device according to claim 1 is characterized in that: the control coil two ends of the described second A.C. contactor KM2 also are connected to very first time relay; The control coil two ends of described the 4th A.C. contactor KM4 also are connected to second time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200727126U CN201991755U (en) | 2011-03-18 | 2011-03-18 | Temperature controlling device for cooling water of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200727126U CN201991755U (en) | 2011-03-18 | 2011-03-18 | Temperature controlling device for cooling water of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991755U true CN201991755U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200727126U Expired - Fee Related CN201991755U (en) | 2011-03-18 | 2011-03-18 | Temperature controlling device for cooling water of air compressor |
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| CN (1) | CN201991755U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996481A (en) * | 2012-12-18 | 2013-03-27 | 复盛实业(上海)有限公司 | Cooling device and cooling method |
| CN104180573A (en) * | 2014-08-19 | 2014-12-03 | 重庆耐德能源装备集成有限公司 | Cooling system |
| CN104238590A (en) * | 2013-06-09 | 2014-12-24 | 成都昊地科技有限责任公司 | Novel intelligent cooling device of transformer |
| CN113589859A (en) * | 2021-07-20 | 2021-11-02 | 苏州市东雄精密模具塑业有限公司 | Cooling tower water temperature control device |
-
2011
- 2011-03-18 CN CN2011200727126U patent/CN201991755U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996481A (en) * | 2012-12-18 | 2013-03-27 | 复盛实业(上海)有限公司 | Cooling device and cooling method |
| CN102996481B (en) * | 2012-12-18 | 2016-01-20 | 复盛实业(上海)有限公司 | A kind of cooling unit and a kind of cooling means |
| CN104238590A (en) * | 2013-06-09 | 2014-12-24 | 成都昊地科技有限责任公司 | Novel intelligent cooling device of transformer |
| CN104180573A (en) * | 2014-08-19 | 2014-12-03 | 重庆耐德能源装备集成有限公司 | Cooling system |
| CN113589859A (en) * | 2021-07-20 | 2021-11-02 | 苏州市东雄精密模具塑业有限公司 | Cooling tower water temperature control device |
| CN113589859B (en) * | 2021-07-20 | 2022-08-09 | 苏州市东雄精密模具塑业有限公司 | Cooling tower water temperature control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Ruiqiang Inventor before: Wang Zhiwu |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG ZHIWU TO: YAN RUIQIANG |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20160318 |