CN207850119U - A kind of cooling tower - Google Patents
A kind of cooling tower Download PDFInfo
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- CN207850119U CN207850119U CN201721840374.XU CN201721840374U CN207850119U CN 207850119 U CN207850119 U CN 207850119U CN 201721840374 U CN201721840374 U CN 201721840374U CN 207850119 U CN207850119 U CN 207850119U
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- air
- signal
- relay
- heating pipe
- feed shutter
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Abstract
The utility model discloses a kind of cooling towers, its key points of the technical solution are that including tower body and the air inlet for being set to tower body side wall, air inlet is provided with air feed shutter, further include wind speed measurement circuit and heating control circuit, wind speed measurement circuit is detected to the wind speed of air inlet and output wind speed signal, the inside of tower body is provided with air heating pipe at air feed shutter, and heating control circuit controls the startup of air heating pipe according to wind velocity signal；When air feed shutter occurs hanging ice phenomenon, air feed shutter is blocked by ice cube, wind speed at air feed shutter reduces, at this moment the corresponding wind velocity signal of wind speed measurement circuit output, heating control circuit starts according to wind velocity signal control air heating pipe at this time, air heating pipe heats the air at air feed shutter, will be ice melting, reduces blocking of the ice cube to air duct.
Description
Technical field
The utility model is related to art of refrigeration units, more specifically, it relates to a kind of cooling tower.
Background technology
Cooling tower is a kind of equipment that the waste heat generated during industrial production or refrigeration process is spilt into air, can be incited somebody to action
The water to be cooled for carrying waste heat carries out heat exchange in Ta Nei and air, and the heat transmission of water to air and is spilt into air, from
And cool down to water, and cooling water is supplied to handpiece Water Chilling Units.
Existing cooling tower is generally provided with air inlet on the side wall of tower body, and air feed shutter is provided on air inlet,
It is to supplement air in cooling tower, but it is existing that extension ice is susceptible on colder area, air feed shutter by air feed shutter
As blocking air duct.
Utility model content
The purpose of this utility model is to provide a kind of cooling tower, has and melts ice cube when air feed shutter occurs hanging ice phenomenon
The advantages of changing, reducing the situation that air duct is blocked.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of cooling tower, including
Tower body and the air inlet for being set to tower body side wall, are provided with air feed shutter in the air inlet, further include wind speed measurement circuit
And heating control circuit, the wind speed measurement circuit is detected to the wind speed of air inlet and output wind speed signal, the tower body
Inside be provided with air heating pipe at air feed shutter, the heating control circuit controls air heating pipe according to wind velocity signal
Startup.
By using above-mentioned technical proposal, when air feed shutter occurs hanging ice phenomenon, air feed shutter is blocked by ice cube, air inlet
Wind speed at blinds reduces, at this moment the corresponding wind velocity signal of wind speed measurement circuit output, and heating control circuit is according to wind at this time
Fast signal control air heating pipe starts, and air heating pipe heats the air at air feed shutter, will be ice melting, reduces
Blocking of the ice cube to air duct.
Preferably, the wind speed measurement circuit includes air velocity transducer and the first amplifier, and first amplifier is to wind
The output of fast sensor is amplified.
By using above-mentioned technical proposal, the first amplifier is amplified the output of air velocity transducer, improves to small
The accuracy of detection of detection limit.
Preferably, the heating control circuit includes first comparator, first switch part and the first relay, and described first
Wind velocity signal and low speed signal are compared by comparator, and export heating signal when wind velocity signal is less than low speed signal, institute
It states first switch part to be connected in response to heating signal, the energization that the first switch part is connected to the coil of the first relay is returned
Road, a normally opened contact of first relay are connected to the power circuit of air heating pipe.
By using above-mentioned technical proposal, when air feed shutter occurs hanging ice phenomenon, the wind speed at air feed shutter becomes smaller, wind
Fast signal is less than low speed signal, and first comparator exports heating signal, and the coil of the conducting of first switch part, the first relay is logical
Electricity, the actuating of relay, normally opened contact are closed, and are connected to the power circuit of air heating pipe, and air heating pipe starts, air heating
Pipe heats the air at air feed shutter, will be ice melting, reduces blocking of the ice cube to air duct.
Preferably, the heating control circuit further includes the second comparator, second switch part and the second relay, and described
One normally opened contact of one relay is connected across first switch part, and second comparator carries out wind velocity signal and constant speed signal
Compare, and stop signal is exported when wind velocity signal is more than constant speed signal, the second switch part is led in response to stop signal
Logical, the second switch part is connected to the power circuit of the coil of the second relay, and one of second relay is normally closed tactile
Point is connected to the power circuit of the coil of the first relay.
By using above-mentioned technical proposal, a normally opened contact of the first relay is connected across first switch part and forms self-locking
Circuit so that air heating pipe energy steady operation, when the ice cube at air feed shutter is melted, the ventilation at air feed shutter 3 is extensive
Multiple, wind velocity signal is more than constant speed signal, and the second comparator exports stop signal, the conducting of second switch part, the line of the second relay
Circle is powered, and the normally-closed contact of the second relay disconnects, the coil losing electricity of the first relay, and the normally opened contact of the first relay is disconnected
It opens, air heating pipe stops heating.
Preferably, the quantity of the wind speed measurement circuit, heating control circuit and air heating pipe is 2, and one is a pair of
It answers, the air heating pipe is symmetrical at air feed shutter.
By using above-mentioned technical proposal so that air heating pipe is distributed in air feed shutter different location, in air feed shutter
Part occur hanging and when phenomenon, start corresponding air heating pipe, reduce the waste of the energy.
Preferably, further include temperature sensing circuit and shut down control circuit, the temperature sensing circuit to tower body outside temperature
Degree is detected and output temperature signal, the stopping shut down control circuit and control air heating pipe according to temperature signal.
By using above-mentioned technical proposal, the temperature outside tower body is not enough to form extension ice phenomenon and air feed shutter is blocked
When plug, the stopping that control circuit controls air heating pipe according to temperature signal is shut down, the waste of the energy is reduced.
Preferably, the temperature sensing circuit includes temperature sensor and third amplifier, and the third amplifier is to temperature
The output of degree sensor is amplified.
By using above-mentioned technical proposal, third amplifier is amplified the output of temperature sensor, improves to small
The accuracy of detection of detection limit.
Preferably, the control circuit of shutting down includes third comparator, third switch member and third relay, the third
Temperature signal is compared by comparator with low temperature preset signals, and output is shut down when temperature signal is more than low temperature preset signals
Signal, the third switch member are connected in response to shutting down signal, and the third switch member is communicated in the coil of third relay
Power circuit, the normally-closed contact of the third relay is connected to the power circuit of air heating pipe.
By using above-mentioned technical proposal, the temperature outside tower body is not enough to form extension ice phenomenon and air feed shutter is blocked
When plug, temperature signal is more than low temperature preset signals, and signal, the conducting of third switch member, third relay are shut down in the output of third comparator
The coil of device is powered, the third actuating of relay, and the normally-closed contact of third relay disconnects the power circuit of air heating pipe, reduces
The case where air heating pipe starts and causes energy waste.
In conclusion the utility model has the advantages that：When air feed shutter occurs hanging ice phenomenon, air feed shutter
Blocked by ice cube, wind speed at air feed shutter reduces, and at this moment controls air heating pipe and starts, air heating pipe to air feed shutter at
Air heated, will be ice melting, reduce blocking of the ice cube to air duct, when the ice cube at air feed shutter is melted, into
Ventilation at wind blinds restores, and air heating pipe stops heating, reduces the waste of the energy, the temperature outside tower body is not enough to be formed
When hanging ice phenomenon and blocked air feed shutter, the power circuit of air heating pipe is cut off, air heating pipe is reduced and starts and make
The case where at energy waste.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present embodiment；
Fig. 2 is the relation schematic diagram of air feed shutter and air heating pipe in the present embodiment；
Fig. 3 is the circuit connection diagram of air velocity transducer in the present embodiment；
Fig. 4 is the circuit connection diagram of temperature sensor in the present embodiment；
Fig. 5 is the circuit connection diagram of air heating pipe in the present embodiment.
Reference numeral：1, tower body；2, air inlet；3, air feed shutter；4, air heating pipe；5, air velocity transducer；6, first
Amplifier；7, first comparator；8, first switch part；9, the first relay；10, the second comparator；11, second switch part；12、
Second relay；13, temperature sensor；14, third amplifier；15, third comparator；16, third switch member；17, third after
Electric appliance.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
Following specific examples is only the explanation to the utility model, is not limitations of the present invention, this
Field technology personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification,
But as long as all being protected by Patent Law in the right of following utility model.
A kind of cooling tower, as depicted in figs. 1 and 2, including tower body 1 and the air inlet 2 for being set to 1 side wall of tower body, it is entering the wind
It is provided with air feed shutter 3 at mouth 2, temperature sensor 13 is installed on tower body 1, temperature sensor 13 is to 1 outside of tower body
Temperature be detected and output temperature signal, temperature signal increases, the inside of tower body 1 with the raising of detected environment temperature
Side inside the close tower body 1 of air feed shutter 3 is provided with 2 air heating pipes 4, and air heating pipe 4 is in air inlet hundred
It is symmetrical at leaf 3 so that air heating pipe 4 is distributed in 3 different location of air feed shutter, is hung in the part of air feed shutter 3
And when phenomenon, start corresponding air heating pipe 4, reduces the waste of the energy.
2 air velocity transducers 5 are provided between 2 air heating pipes 4, to the wind at the air feed shutter 3 of present position
Speed is detected and exports corresponding wind velocity signal, and wind velocity signal increases with the increase of detected wind speed, each wind speed
Each close one of air heating pipe 4 of sensor 5 is arranged.
In conjunction with Fig. 3 and Fig. 5, wherein each air velocity transducer 5 is respectively electrically connected with one first amplifier 6, the first amplifier 6
Positive terminal is connect with the output end of air velocity transducer 5, the negative pole end resistance grounded of the first amplifier 6, and the first amplifier 6 is born
Extremely to be connected with resistance between output end, the wind velocity signal that the first amplifier 6 exports air velocity transducer 5 is amplified, carries
Accuracy of detection of the height to small detection limit.
The output end of first amplifier 6 is electrically connected with first comparator 7, the negative input of first comparator 7 and first
The output end of amplifier 6 is electrically connected, and the electrode input end of first comparator 7 is electrically connected to the movable end of a potentiometer, potentiometer
Other two fixing end connect power supply VCC and ground connection through resistance respectively, power supply VCC is that first comparator 7 carries by potentiometer
For low speed signal, first comparator 7 is compared wind velocity signal with low speed signal, defeated when wind velocity signal is less than low speed signal
Go out the heating signal of high level.
The output end of first comparator 7 is electrically connected with the base stage of first switch part 8, and first switch part 8 is three poles of NPN type
Pipe, the emitter resistance grounded of first switch part 8, the collector of first switch part 8 are electrically connected with the coil of the first relay 9
The one end of coil K1 far from first switch part 8 of K1, the first relay 9 connect power supply VCC, and first switch part 8 is in response to heating
Signal and be connected, the energization that the normally opened contact K1-1 of each first relay 9 is respectively connected to a corresponding air heating pipe 4 is returned
Road, the normally opened contact K1-2 of the first relay 9 are connected across first switch part 8 and form self-locking circuit so that air heating pipe 4 can be steady
Fixed work.
When air feed shutter 3 occurs hanging ice phenomenon, the wind speed at air feed shutter 3 becomes smaller, and wind velocity signal is less than low speed signal,
First comparator 7 exports heating signal, and first switch part 8 is connected, and the coil K1 of the first relay 9 is powered, the actuating of relay,
Normally opened contact K1-1 is closed, and is connected to the power circuit of air heating pipe 4, and air heating pipe 4 starts, and air heating pipe 4 is to air inlet
Air at blinds 3 is heated, will be ice melting, reduces blocking of the ice cube to air duct.
The output end of first amplifier 6 is electrically connected with the second comparator 10, the electrode input end of the second comparator 10 and
The output end of one amplifier 6 is electrically connected, and the negative input of the second comparator 10 is electrically connected to the movable end of a potentiometer, current potential
Other two fixing end of device connects power supply VCC and ground connection through resistance respectively, and power supply VCC is the second comparator 10 by potentiometer
Constant speed signal is provided, the second comparator 10 is compared wind velocity signal with constant speed signal, is more than constant speed signal in wind velocity signal
When export high level stop signal.
The output end of second comparator 10 is electrically connected with the base stage of second switch part 11, and second switch part 11 is NPN type
The collector of triode, the emitter resistance grounded of second switch part 11, second switch part 11 is electrically connected with the second relay
The one end of coil K2 far from second switch part 11 of 12 coil K2, the second relay 12 connect power supply VCC, second switch part 11
It is connected in response to stop signal, the normally-closed contact K2-1 of the second relay 12 is connected to the coil K1 and electricity of the first relay 9
Between the VCC of source.
When ice cube at air feed shutter 3 is melted, the ventilation at air feed shutter 3 restores, and wind velocity signal is believed more than constant speed
Number, the second comparator 10 exports stop signal, and second switch part 11 is connected, and the coil K2 of the second relay 12 is powered, second after
The normally-closed contact K2-1 of electric appliance 12 is disconnected, the coil K1 dead electricity of the first relay 9, the normally opened contact K1-1 of the first relay 9 and
K1-2 is disconnected, and air heating pipe 4 stops heating.
In conjunction with Fig. 4 and Fig. 5, the output end of temperature sensor 13 is electrically connected with third amplifier 14, third amplifier 14
Positive terminal is connect with the output end of temperature sensor 13, the negative pole end resistance grounded of third amplifier 14, third amplifier 14
Negative pole end to be connected with resistance between output end, the wind velocity signal that third amplifier 14 exports air velocity transducer 5 is put
Greatly, the accuracy of detection to small detection limit is improved.
The output end of third amplifier 14 is electrically connected with third comparator 15, the electrode input end of third comparator 15 and
The output end of three amplifiers 14 is electrically connected, and the negative input of third comparator 15 is electrically connected to the movable end of a potentiometer, electricity
Other two fixing end of position device connects power supply VCC and ground connection through resistance respectively, and power supply VCC is third comparator by potentiometer
15 provide low-temperature signal, and third comparator 15 is compared wind velocity signal with low speed signal, believe more than low speed in wind velocity signal
Number when output high level shut down signal.
The output end of third comparator 15 is electrically connected with the base stage of third switch member 16, and third switch member 16 is NPN type
The collector of triode, the emitter resistance grounded of third switch member 16, third switch member 16 is electrically connected with third relay
The one end of coil K3 far from third switch member 16 of 17 coil K3, third relay 17 connect power supply VCC, third switch member 16
It is connected in response to heating signal, two normally opened contact K3-1 of third relay 17 are respectively connected to the logical of an air heating pipe 4
Electrical circuit.
Temperature outside tower body 1, which is not enough to be formed, hangs ice phenomenon and when air feed shutter 3 is blocked, temperature signal is more than low
Signal is shut down in warm preset signals, the output of third comparator 15, and third switch member 16 is connected, and the coil K3 of third relay 17 is logical
Electricity, third relay 17 act, and the normally-closed contact K3-1 of third relay 17 disconnects the power circuit of air heating pipe 4, reduce
The case where air heating pipe 4 starts and causes energy waste.
Specific work process：When air feed shutter 3 occurs hanging ice phenomenon, air feed shutter 3 is blocked by ice cube, air feed shutter 3
The wind speed at place reduces, and at this moment controls air heating pipe 4 and starts, and air heating pipe 4 heats the air at air feed shutter 3,
Will be ice melting, reduce blocking of the ice cube to air duct.
When ice cube at air feed shutter 3 is melted, the ventilation at air feed shutter 3 restores, and air heating pipe 4 stops adding
Heat reduces the waste of the energy.
Temperature outside tower body 1, which is not enough to be formed, hangs ice phenomenon and when air feed shutter 3 is blocked, cuts off air heating pipe
4 power circuit reduces the case where air heating pipe 4 starts and causes energy waste.
Claims (8)
1. a kind of cooling tower, including tower body (1) and the air inlet (2) for being set to tower body (1) side wall, at the air inlet (2)
It is provided with air feed shutter (3), it is characterized in that：Further include wind speed measurement circuit and heating control circuit, the wind speed measurement circuit
Simultaneously output wind speed signal is detected to the wind speed of air inlet (2), the inside of the tower body (1) is arranged at air feed shutter (3)
There are air heating pipe (4), the heating control circuit to control the startup of air heating pipe (4) according to wind velocity signal.
2. a kind of cooling tower according to claim 1, it is characterized in that：The wind speed measurement circuit includes air velocity transducer
(5) output of air velocity transducer (5) is amplified with the first amplifier (6), first amplifier (6).
3. a kind of cooling tower according to claim 2, it is characterized in that：The heating control circuit includes first comparator
(7), first switch part (8) and the first relay (9), the first comparator (7) compare wind velocity signal and low speed signal
Compared with, and heating signal is exported when wind velocity signal is less than low speed signal, the first switch part (8) is led in response to heating signal
Logical, the first switch part (8) is connected to the power circuit of the coil of the first relay (9), and the one of first relay (9)
A normally opened contact is connected to the power circuit of air heating pipe (4).
4. a kind of cooling tower according to claim 3, it is characterized in that：The heating control circuit further includes the second comparator
(10), a normally opened contact of second switch part (11) and the second relay (12), first relay (9) is connected across first
Wind velocity signal is compared by switch member (8), second comparator (10) with constant speed signal, and is more than constant speed in wind velocity signal
Stop signal is exported when signal, the second switch part (11) is connected in response to stop signal, the second switch part (11)
It is connected to the power circuit of the coil of the second relay (12), a normally-closed contact of second relay (12) is connected to
The power circuit of the coil of one relay (9).
5. a kind of cooling tower according to claim 1, it is characterized in that：The wind speed measurement circuit, heating control circuit and
The quantity of air heating pipe (4) is 2, and is corresponded, and the air heating pipe (4) is symmetrical at air feed shutter (3).
6. a kind of cooling tower according to claim 1, it is characterized in that：Further include temperature sensing circuit and shut down control electricity
Road, the temperature sensing circuit is detected to the temperature of tower body (1) outside and output temperature signal, described to shut down control circuit root
According to the stopping of temperature signal control air heating pipe (4).
7. a kind of cooling tower according to claim 6, it is characterized in that：The temperature sensing circuit includes temperature sensor
(13) output of temperature sensor (13) is amplified with third amplifier (14), the third amplifier (14).
8. a kind of cooling tower according to claim 7, it is characterized in that：The control circuit of shutting down includes third comparator
(15), temperature signal and low temperature are preset letter by third switch member (16) and third relay (17), the third comparator (15)
It number is compared, and signal, third switch member (16) response are shut down in output when temperature signal is more than low temperature preset signals
It is connected in shutting down signal, the third switch member (16) is communicated in the power circuit of the coil of third relay (17), described
The normally-closed contact of third relay (17) is connected to the power circuit of air heating pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721840374.XU CN207850119U (en) | 2017-12-25 | 2017-12-25 | A kind of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721840374.XU CN207850119U (en) | 2017-12-25 | 2017-12-25 | A kind of cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207850119U true CN207850119U (en) | 2018-09-11 |
Family
ID=63418689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721840374.XU Active CN207850119U (en) | 2017-12-25 | 2017-12-25 | A kind of cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207850119U (en) |
-
2017
- 2017-12-25 CN CN201721840374.XU patent/CN207850119U/en active Active
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