CN204924026U - Cooling tower condensation module air inlet controlling means - Google Patents
Cooling tower condensation module air inlet controlling means Download PDFInfo
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- CN204924026U CN204924026U CN201520549975.XU CN201520549975U CN204924026U CN 204924026 U CN204924026 U CN 204924026U CN 201520549975 U CN201520549975 U CN 201520549975U CN 204924026 U CN204924026 U CN 204924026U
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- air inlet
- pull bar
- pressure sensor
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- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 238000009833 condensation Methods 0.000 title claims abstract description 36
- 230000005494 condensation Effects 0.000 title claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 9
- 230000009347 mechanical transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003519 ventilatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a cooling tower condensation module air inlet controlling means, including pressure sensor (103, 104, 108), wind pressure sensor (101, 102), venetian blind type hot blast blowpipe apparatus (105), PLC controller (106), push -and -pull rod electric actuator (107), cooling tower fan (109) and cool congeal module (110). Wind pressure sensor measurements shutter blade both sides pressure P1 and P2, damp and hot air outlet pressure P3 of pressure sensor measurements and dry and cold air outlet pressure P4, pressure and wind pressure signal input PLC controller judge the regulation orientation of cold blast rate, and by P1 and P2's relation control electric actuator's power return circuit, the control motor turns to and opens and stop, through the removal of mechanical transmission device control push -and -pull rod, and adjusting vane orientation to best air inlet state. Arrange pressure sensor, conveying mixing section pressure P5 to PLC controller, input signal control fan operation in the mixing section top of condensation module. The utility model discloses a cooling tower condensation module intake and cooling tower fan's automated control.
Description
Technical field
The utility model relates to the automatic air inlet control device of a kind of cooling tower, is specifically related to a kind of venetian blind type air inlet control device of cooling tower condensation module, is applicable to the device adjusting intake.
Background technology
Reverse-flow wet cooling tower, recirculated cooling water carries out at Ta Nei and air the water loss that heat and mass cooling produces, mainly comprise evaporation loss, windage loss and blowdown and lose three parts, wherein evaporation loss is about 1.2% ~ 1.6% of recirculated water total amount, accounts for 30% ~ 55% of power plant's water consumption total amount.For reclaiming the cooling water evaporated in cooling tower, in prior art, devising refrigerating module, being arranged in above cooling inner-tower filling material and the water vapour condensation in wet-hot steam is reclaimed.
The cold wind of condensation module derives from gravity-flow ventilation, but due to the change in ambient wind velocity and direction, ventilation is among change.When ambient wind velocity is higher, cold blast rate is excessive, in cold side outlet and exit, the hot junction cold wind hypertonia of condensation module, affects damp-heat air and rises, and then affect the cooling effect of cooling tower; Meanwhile, because cold blast rate is excessive, in cooling tower, negative pressure raises, and flow increases, and blower fan of cooling tower energy consumption increases.
The automatic air inlet control device of existing cooling tower generally adopts measurement transmitting device, carry out Logic judgment through control module and control electric device action, realize automatic control process, as, all adopt sensing device Received signal strength in utility model patent CN203432450U cement kiln residual heat generating cooling tower automaton, patent of invention CN101650056B cooling tower and handpiece Water Chilling Units air conditioning equipment and its control method, control module processing signals realizes control procedure.
Utility model content
The purpose of this utility model is the adjustment problem in order to solve cooling tower condensation module intake, a kind of automatic air inlet control device of refrigerating module intake is proposed, for adjusting the cold blast rate of refrigerating module under varying environment wind speed and wind direction, condensation module is avoided to affect the cooling effect of original cooling device.
The utility model adopts following technical scheme:
A kind of cooling tower condensation module air inlet control device, comprising: pressure sensor, venetian blind type air-intake device, wind pressure sensor, PLC and pull bar electric device.Pressure sensor, for measuring cooling tower condensation module cold side outlet pressure and hot junction outlet pressure, whether reasonably pressure difference signal as judging intake foundation, for measuring on cooling tower condensation module mixing section pressure in squarer, pressure signal is as the foundation of adjustment blower fan of cooling tower running frequency; Venetian blind type air-intake device, realizes the adjustment of intake for adjusting direction blade, control intake in ambient wind within the scope of best effort to during the change of, wind speed; Wind pressure sensor, for measuring blade both sides blast, blast pressure difference signal is as the foundation judging blade adjustment direction and amplitude; PLC, for doing Logic judgment to input signal, control electric device turns to the operation with start and stop and blower fan of cooling tower; Pull bar electric device, for receiving the signal of controller, controls aperture and direction that motor turns to the blade controlling venetian blind type air-intake device further.
As preferably, described venetian blind type air-intake device controls intake by the blade opening of shutter.
As preferably, described venetian blind type air-intake device by the pressure signal of pressure at both sides sensor as the feedback signal of current intake.
As preferably, the blade of described venetian blind type air-intake device is connected by push-and-pull cross bar, controls the aperture of one group of blade simultaneously.
As preferably, described pull bar electric device controls motor start and stop, steering controling circuit, the cross bar Vertical Meshing of motor rotary shaft and shutter air-intake device, course changing control pull bar translation direction by the output signal of PLC.
As optional, squarer pressure sensor on described condensation module mixing section, also can adopt flowmeter, regulates blower fan of cooling tower to run using flow signal as feedback signal;
As preferably, described air inlet control device adopts two covers identical and independently device is separately positioned on the both sides of cooling tower, controls the condensation module air intake of both sides respectively.
The beneficial effects of the utility model are:
1., owing to have employed venetian blind type air-intake device, shutter is applied in the device of air quantity adjustment, blade of louver window aperture can be adjusted according to service requirement and control intake flexibly;
2., owing to have employed wind pressure sensor in blade of louver window both sides, judgement to current intake can be realized according to both sides wind pressure signal, and as the feedback signal of air quantity, for determining that adjusting aperture provides foundation on the one hand;
3., owing to have employed pressure sensor respectively at the cold side outlet of cooling tower condensation module and hot junction outlet, the value of cold side outlet pressure and hot junction outlet pressure can be detected, cold blast rate can be realized by relation between the two and whether reasonably judge;
4., owing to adopting PLC, Logic judgment process can be carried out to wind pressure signal, pressure signal, and control the action of pull bar electric device, realize the whole-course automation of control procedure;
5. due in cooling tower condensation module top device for pressure measurement is set, and according to pressure signal adjustment blower fan of cooling tower running frequency, the situation of blower fan " with greatly with little " can be avoided, reduce fan energy consumption.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram according to an embodiment of the present utility model;
Fig. 2 is the air inlet control device schematic diagram according to an embodiment of the present utility model;
Fig. 3 is the venetian blind type air-intake device schematic diagram according to an embodiment of the present utility model;
Fig. 4 is the operating diagram of the pull bar electric device according to an embodiment of the present utility model;
Fig. 5 is the Motor Control schematic diagram of the pull bar electric device according to an embodiment of the present utility model.
Reference numeral:
101 wind pressure sensors; 102 wind pressure sensor 103 hot junction outlet pressure sensors
104 cold side outlet pressure sensor 105 venetian blind type air-intake devices
106PLC controller 107 pull bar electric device
108 pressure sensor 109 blower fan of cooling tower
110 condensation module 401 shutter connecting rods
402 motor rotary shafts
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figure 1, pressure sensor (108) and blower fan of cooling tower (109) above mixing section is comprised in wind pressure sensor (101,102), hot junction outlet pressure sensor (103), cold side outlet pressure sensor (104), venetian blind type air-intake device (105), PLC (programmable logic device) controller (106), pull bar electric device (107), cooling tower according to the cooling tower condensation module air inlet control device of an embodiment of the present utility model.The course of work of this air inlet control device comprises: adopt venetian blind type air-intake device (105), by adjustment shutter aperture adjustment intake; Establish the first and second pressure sensors (103,104) respectively at the cold side outlet of cooling tower condensation module and hot junction outlet, establish the first and second wind pressure sensors (101,102) in the blade both sides of shutter respectively; The wind pressure signal of the pressure signal of pressure sensor (103,104), wind pressure sensor (101,102) is transferred to PLC (106); PLC (106) controls the action of pull bar electric device (107) thus, and adjustment shutter aperture is to best intake.Meanwhile, the 3rd pressure sensor (108) to be measured in cooling tower pressure above mixing section and is delivered to PLC (106), the operation of controlled cooling model tower blower fan (109).
Fig. 2 is the fundamental diagram of above-mentioned cooling tower condensation module air inlet control device.When ambient wind is to time inconsistent with blade of louver window direction, not etc., namely windward side blast is not greater than leeward side blast to blade both sides pressure reduction, and P1, P2 represent the blast (see Fig. 3) on blast on the left of blade and right side respectively; When condensation module works, if cold blast rate is too small, hot junction outlet pressure P3 can be greater than cold side outlet pressure P 4, affect the condensation effect of condensation module, if cold blast rate is excessive, hot junction outlet pressure P3 can be less than cold side outlet pressure P 4, suppresses the rising of damp-heat air, affects the normal cooling heat transferring of cooling tower.Work as P3>P4, i.e. (△ P2=P3-P4) during △ P2>0, shutter aperture need be increased, the direction that blade both sides blast pressure difference needs tuning to reduce: (driving pull bar to move to right when supposing that motor rotates forward) works as P1>P2, △ P1>0, pull bar need move to right, suppose that motor rotates forward, work as P1<P2, △ P1<0 (△ P1=P1-P2), pull bar need move to left, motor reversal, as △ P1=0, to Maximum Ventilatory Volume, motor stalling, work as P3<P4, namely during △ P2<0, shutter aperture need be reduced, the direction that blade both sides blast pressure difference needs tuning to increase: work as P1>P2, △ P1>0, pull bar need move to left, motor reversal, works as P1<P2, △ P1<0, pull bar need move to right, and motor rotates forward, work as P3=P4, namely during △ P2=0, reach best intake, do not need adjustment shutter aperture.Summary, as △ P1* △ P2>0, motor rotates forward; As △ P1* △ P2<0, motor reversal; As △ P1* △ P2<0, motor stalling.
Wind pressure signal P1, P2 and pressure signal P 3, P4 control motor through PLC process and turn to, the translation of motor rotary shaft interlock pull bar, adjustment shutter aperture.Meanwhile, pressure sensor (108) transmits the process of pressure P 5 to PLC, controls fan operation.
Fig. 3 arranges schematic diagram according to the venetian blind type air-intake device of an embodiment of the present utility model, wherein, in the air inlet control device of real work, have employed the multipair wind pressure sensor being located at multiple blade both sides respectively, to reduce sensing measurement error.
Fig. 4 is motor rotary shaft according to an embodiment of the present utility model and pull bar linkage schematic diagram.Wherein, turn to by Motor Control gear (402) translation direction and translation distance that control horizontal pull bar (401) with rotational angle, realize the control to blade of louver window aperture further.
Fig. 5 is the working control circuit schematic diagram of the motor according to an embodiment of the present utility model, wherein, by the cut-off/close of switch k1, k2, k3, k4 controlled by PLC (Fig. 1), realize turning to and/or on off control of motor.Concrete control procedure is: switch k1, k3 are closed, and k2, k4 disconnect, and motor rotates forward; Switch k1, k3 disconnect, and k2, k4 are closed, and motor rotates backward; Switch k1, k3, k2, k4 all disconnect, and motor stops operating.
Claims (9)
1. a cooling tower condensation module air inlet control device, is characterized in that comprising:
Be separately positioned on the first and second pressure sensors (103,104) exported in cold side outlet and the hot junction of cooling tower condensation module, measure cold side outlet pressure and the hot junction outlet pressure of cooling tower condensation module respectively;
Control the venetian blind type air-intake device (105) of intake;
Be separately positioned on first and second wind pressure sensors (101,102) of the blade both sides of venetian blind type air-intake device (105), measure the blast of described blade both sides respectively;
PLC (106), its control start and stop and the instruction turned to are transmitted to pull bar electric device;
Pull bar electric device, it comprises motor, and controls turning to of described motor.
2. cooling tower condensation module air inlet control device according to claim 1, is characterized in that comprising further:
3rd pressure sensor (108), the measurement result of its pressure measured in cooling tower above mixing section is transported to PLC (106).
3. cooling tower condensation module air inlet control device according to claim 1 and 2, is characterized in that:
Pull bar electric device comprises horizontal pull bar (401),
Described in a group of described venetian blind type air-intake device, blade is connected with horizontal pull bar (401), is controlled the aperture of blade described in a group by the left and right translation of horizontal pull bar simultaneously.
4. cooling tower condensation module air inlet control device according to claim 1, is characterized in that:
The output signal of described PLC control described motor start and stop, turn to,
The rotating shaft of motor and horizontal pull bar (401) Vertical Meshing of shutter air-intake device, by motor course changing control pull bar translation direction.
5. cooling tower condensation module air inlet control device according to claim 1, is characterized in that comprising further:
Measure the flowmeter of the flow in cooling tower above mixing section, its flow measurement is transported to PLC (106).
6., according to the cooling tower condensation module air inlet control device one of claim 1,2,4,5 Suo Shu, it is characterized in that:
Described wind pressure sensor comprises the multipair wind pressure sensor being located at multiple described blade both sides respectively.
7., according to the cooling tower condensation module air inlet control device one of claim 1,2,4,5 Suo Shu, it is characterized in that comprising further:
Comprise a control circuit of switch k1, k2, k3, k4,
Wherein, the cut-off/close of described control instruction gauge tap k1, k2, k3, k4 of PLC.
8. cooling tower condensation module air inlet control device according to claim 4, is characterized in that the concrete control procedure of described control circuit comprises:
Switch k1, k3 are closed, and k2, k4 disconnect, and motor rotates forward;
Switch k1, k3 disconnect, and k2, k4 are closed, and motor rotates backward;
Switch k1, k3, k2, k4 all disconnect, and motor stops operating.
9. cooling tower condensation module air inlet control device according to claim 4, it is characterized in that comprising the rotating shaft of motor and the linkage of horizontal pull bar (401) further, this linkage comprises gear (402), gear (402) and horizontal pull bar (401) Vertical Meshing, by the forward of gear (402) direction rotate, drive horizontal pull bar (401) to the right on the left of translation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549975.XU CN204924026U (en) | 2015-07-27 | 2015-07-27 | Cooling tower condensation module air inlet controlling means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520549975.XU CN204924026U (en) | 2015-07-27 | 2015-07-27 | Cooling tower condensation module air inlet controlling means |
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| CN204924026U true CN204924026U (en) | 2015-12-30 |
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| CN201520549975.XU Active CN204924026U (en) | 2015-07-27 | 2015-07-27 | Cooling tower condensation module air inlet controlling means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043160A (en) * | 2015-07-27 | 2015-11-11 | 大连理工大学 | Air-intake control device for condensation module of cooling tower |
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- 2015-07-27 CN CN201520549975.XU patent/CN204924026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043160A (en) * | 2015-07-27 | 2015-11-11 | 大连理工大学 | Air-intake control device for condensation module of cooling tower |
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