CN210861504U - Air conditioning unit energy-saving system for cleaning factory building - Google Patents
Air conditioning unit energy-saving system for cleaning factory building Download PDFInfo
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- CN210861504U CN210861504U CN201921176365.4U CN201921176365U CN210861504U CN 210861504 U CN210861504 U CN 210861504U CN 201921176365 U CN201921176365 U CN 201921176365U CN 210861504 U CN210861504 U CN 210861504U
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Abstract
The utility model discloses an air conditioning unit economizer system for clean factory building relates to air conditioning unit technical field, has solved the problem that is difficult to control the flow speed and the flow of cooling water in time, including control box, a plurality of cooling towers, a plurality of cooling water sets, a plurality of chilled water equipment, cooling water inlet tube, cooling water wet return, cooling water pump, chilled water inlet tube, chilled water wet return, chilled water pump; the inside of cooling water inlet tube and cooling water wet return all is fixed with flow sensor and temperature sensor, and the outside all is fixed with the conduction valve, fixedly connected with electric actuator on the conduction valve, and the control box internal fixation has controlling means, and flow sensor, electric actuator, temperature sensor all with control circuit electric connection. The utility model discloses be convenient for in time detect the flow that the cooling water intake and go out water according to actual conditions, be convenient for in time control the flow and the flow of cooling water, have the advantage of environmental protection and energy saving.
Description
Technical Field
The utility model belongs to the technical field of the air conditioning unit technique and specifically relates to an air conditioning unit economizer system for clean factory building is related to.
Background
Air conditioning units are generally required to be provided for refrigerating plants in places such as power plants and food plants, the air conditioning units in the places need to adapt to the working condition of long-time low-load operation, so that the selected air conditioning units generally adopt screw type water chilling units, the time of the general screw type water chilling units operating under 100% load all the year around accounts for less than one fourth of the total time, most of the screw type water chilling units operate under 75% load, and therefore large resource waste is easily caused, and enterprise cost is increased.
The air conditioning system comprises a plurality of water chilling units, each water chilling unit is at least connected with one terminal device, the control method comprises the operation of one of the plurality of water chilling units of the cage, and when the terminal device connected with the current operated water chilling unit cannot meet the system load, the control method controls the terminal device connected with the water chilling unit in the non-working state to be switched to the terminal device connected with the current operated water chilling unit to be connected in parallel.
The above prior art solutions have the following drawbacks: because the cold production capacity of the water chilling unit is related to the water outlet flow and flow of cooling water, the water inlet flow, flow and dirt coefficient of the cooling water, the cooling water in the water chilling unit cannot be directly judged in the refrigeration process, the flowing speed and flow of the cooling water are difficult to control in time, the actual cold production capacity of the air conditioning unit is easily influenced, and energy consumption is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flow, be convenient for in time control, environmental protection and energy saving's the air conditioning unit economizer system that is used for clean factory building to the flow of in time detecting the cooling water and intaking and go out the water flow, the flow and the flow of cooling water in time.
The utility model discloses a can realize through following technical scheme:
the energy-saving system of the air conditioning unit for cleaning the factory building comprises a control box, a plurality of cooling towers, a plurality of water chilling units and a plurality of chilled water devices, wherein a cooling water inlet pipe and a cooling water return pipe are fixedly connected between the cooling towers and the water chilling units;
the cooling water inlet tube with the inside of cooling water wet return all is fixed with flow sensor and temperature sensor, the cooling water inlet tube with the outside of cooling water wet return all is fixed with the conduction valve, fixedly connected with electric actuator on the conduction valve, the control box internal fixation has controlling means, flow sensor electric actuator temperature sensor all with control circuit electric connection, controlling means receives behind the flow detection signal of flow sensor output, control electric actuator opens and close.
By adopting the technical scheme, firstly, a flow reference signal is preset in the control device, in the process of guiding water by the cooling water inlet pipe and the cooling water outlet pipe, the flow speed of the circulating cooling water is sensed by the flow sensor and the flow detection signal is transmitted to the control device, the flow detection signal and the flow reference signal are compared with each other in the control device, when the flow speed of the cooling water is detected to be higher than or lower than a set range, the control device controls the electric actuator to start, the size of the conduction opening of the conduction valve is adjusted by the electric actuator, the amount of the cooling water entering and discharging the water chilling unit is further adjusted, and meanwhile, the temperature sensor is used for sensing the temperature of the cooling water in real time, so that the temperature of the cooling water output from the cooling tower can be adjusted according to the actual condition, and finally the water chilling unit can keep normal refrigeration capacity, and energy consumption loss is reduced.
Further setting the following steps: the control device comprises a signal comparison circuit which is preset with a flow reference signal and is coupled with the flow sensor so as to compare the flow detection signal with the flow reference signal and output a flow comparison signal, and an execution circuit which is coupled with the signal comparison circuit so as to receive the flow comparison signal and is used for controlling the electric actuator to be opened and closed.
Further setting the following steps: the signal comparison circuit comprises a triode Q1 and a first resistor, wherein the base electrode of the triode Q1 is coupled with the signal output end of the flow sensor to receive a flow detection signal, the transmitter of the triode Q1 is grounded, the collector electrode of the triode Q1 is coupled with one end of the first resistor to output a flow comparison signal to the execution circuit to control the on-off of the execution circuit, one end of the first resistor is coupled with a power supply Vcc, and the other end of the first resistor is connected with the collector electrode of the triode Q1.
Further setting the following steps: the execution circuit comprises a third resistor, a triode Q2 and a relay, wherein one end of the third resistor is coupled to a power supply Vcc, the other end of the third resistor is coupled to a collector of the triode Q2, a base of the triode Q2 is coupled to a connection point of the collector of the triode Q1 and the first resistor to receive a flow comparison signal, an emitter of the triode Q2 is connected to the coil of the relay and then grounded, and a normally closed contact of the relay is coupled to a power supply loop of the electric actuator to control the on and off of the electric actuator.
Through adopting above-mentioned technical scheme, the circuit is simple easily to be realized, and the later stage of being convenient for simultaneously is maintained, reduces cost of maintenance.
Further setting the following steps: the periphery sides of the cooling water inlet pipe, the cooling water return pipe, the chilled water inlet pipe and the chilled water return pipe are respectively fixed with a pressure gauge.
Through adopting above-mentioned technical scheme, the manometer is convenient for observe cooling water and refrigerated water circulation state to be convenient for adjust the flow of cooling water and refrigerated water better, it is more energy-conserving practical.
Further setting the following steps: rubber tubes for placing the flow sensor and the temperature sensor are arranged in the cooling water inlet pipe and the cooling water return pipe.
Through adopting above-mentioned technical scheme, the rubber tube is convenient for flow sensor and temperature sensor at the installation of the inside of cooling water inlet tube and cooling water wet return, plays waterproof effect to flow sensor simultaneously.
Further setting the following steps: the cooling water inlet pipe with the refrigerated water inlet pipe is inside all to be fixed with the filter screen.
Through adopting above-mentioned technical scheme, utilize the filter screen to filter the cooling water and the refrigerated water in exporting the cooling water set, reduce the impurity that gets into in the cooling water set for the work of cooling water set is energy-conserving high-efficient more.
To sum up, the utility model discloses a beneficial technological effect does:
(1) the flow speed of cooling water in the cooling water return pipe and the cooling water inlet pipe is detected by using a flow sensor, when the flow speed of the cooling water is detected to be higher than or lower than a set range, the control device controls the electric actuator to start, the size of a conduction opening of a conduction valve is adjusted by the electric actuator, the flow of the cooling water entering and discharging the water chilling unit is further adjusted, the refrigerating capacity of the water chilling unit is further adjusted, and the energy consumption of the water chilling unit is reduced;
(2) utilize temperature sensor to respond to the inside cooling water temperature of cooling water wet return and cooling water inlet pipe to transmission signal to control circuit, the staff of being convenient for adjusts the cooling water temperature of cooling tower output according to actual conditions, further reduces the energy consumption of cooling water set, makes the air conditioning effect of cooling water set better.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of a part of the structure of the cooling water return pipe of the present invention;
fig. 3 is a schematic circuit diagram of the control circuit of the present invention.
Reference numerals: 1. a control box; 2. a cooling tower; 3. a water chilling unit; 4. a chilled water device; 5. a cooling water inlet pipe; 6. a cooling water return pipe; 7. a cooling water pump; 8. a chilled water inlet pipe; 9. a chilled water return pipe; 10. a chilled water pump; 11. a flow sensor; 12. a temperature sensor; 13. a conduction valve; 14. an electric actuator; 15. a control device; 16. a signal comparison circuit; 17. an execution circuit; 18. a pressure gauge; 19. a hose; 20. and (5) filtering by using a filter screen.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses an air conditioning unit economizer system for clean factory building, including control box 1, a plurality of cooling tower 2, a plurality of cooling water set 3, a plurality of refrigerated water equipment 4, the control box 1 internal fixation has control circuit, control circuit and cooling tower 2 and the equal electric connection of refrigerated water equipment 4. Fixedly connected with cooling water inlet tube 5 and cooling water wet return 6 between cooling tower 2 and the cooling water set 3 are fixed with cooling water pump 7 on the cooling water inlet tube 5, and fixedly connected with refrigerated water inlet tube 8 and refrigerated water wet return 9 between cooling water set 3 and the refrigerated water equipment 4 are fixed with chilled water pump 10 on the refrigerated water inlet tube 8.
In the working process, the cooling water passes through cooling water pump 7 in with cooling water introduction cooling water inlet tube 5, and enter into cooling water set 3 inside, the cooling water gets into the outer tube of condenser after that, and carry out the heat exchange with the refrigerant of high temperature saturation, after the cooling water absorbed the heat of refrigerant, get back to and dispel the heat and cool down in cooling tower 2 through cooling water wet return 6, the refrigerated water passes through the refrigerated water pump and leads the refrigerated water to in the refrigerated water inlet tube 8, and enter into cooling water set 3 inside, after that carry out the heat exchange with the cryogenic refrigerant of low pressure in the evaporimeter, make the refrigerated water temperature reduce the back, through refrigerated water wet return 9, and carry out the heat exchange in the fan coil of room, thereby the refrigerated water endotherm realizes the cooling in.
Referring to fig. 1, a conduction valve 13 is fixed outside each of the cooling water inlet pipe 5 and the cooling water return pipe 6, an electric actuator 14 is fixedly connected to the conduction valve 13, the electric actuator 14 is electrically connected to the control circuit, and the control device 15 controls the electric actuator 14 to open and close after receiving a flow detection signal output by the flow sensor 11.
Referring to fig. 3, the control device 15 includes a signal comparison circuit 16, which is preset with a flow reference signal and coupled to the flow sensor 11 to compare the flow detection signal and the flow reference signal with each other and output a flow comparison signal, and an execution circuit 17, which is coupled to the signal comparison circuit 16 to receive the flow comparison signal and control the on/off of the electric actuator 14.
The signal comparison circuit 16 includes triode Q1 and first resistance, the utility model discloses a triode Q1 that the model is 9013's NPN type, triode Q1's base is coupled in order to receive the flow detection signal in flow sensor 11's signal output part, triode Q1's transmitter ground connection, triode Q1's collecting electrode is coupled with the one end of first resistance and is used for exporting flow comparison signal to the break-make of executive circuit 17 with the control, the one end of first resistance is coupled in power Vcc, the other end is connected in triode Q1's collecting electrode.
The implementation principle and the beneficial effects of the embodiment are as follows:
in-process of cooling water inlet tube 5 and the water guide of cooling water wet return 6, flow sensor 11 is responded to the flow velocity of the cooling water of circulation, simultaneously carry out real-time induction to the temperature of cooling water through temperature sensor 12, when detecting out that the flow velocity of cooling water is higher than or is less than the scope of settlement, control device 15 control electric actuator 14 starts, electric actuator 14 adjusts the opening size that switches on of conduction valve 13, and then adjust the cooling water volume that gets into and discharge in the cooling water set 3, simultaneously according to the temperature detected signal that temperature sensor 12 detected, adjust the temperature of the cooling water of output in the cooling tower 2, finally make cooling water set 3 keep normal cold production volume, reduce the energy consumption loss.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The energy-saving system for the air conditioning unit of the clean workshop comprises a control box (1), a plurality of cooling towers (2), a plurality of water chilling units (3) and a plurality of chilled water devices (4), wherein a cooling water inlet pipe (5) and a cooling water return pipe (6) are fixedly connected between each cooling tower (2) and each water chilling unit (3), a cooling water pump (7) is fixed on each cooling water inlet pipe (5), a chilled water inlet pipe (8) and a chilled water return pipe (9) are fixedly connected between each water chilling unit (3) and each chilled water device (4), and a chilled water pump (10) is fixed on each chilled water inlet pipe (8);
the method is characterized in that: cooling water inlet tube (5) with the inside of cooling water wet return (6) all is fixed with flow sensor (11) and temperature sensor (12), cooling water inlet tube (5) with the outside of cooling water wet return (6) all is fixed with conduction valve (13), fixedly connected with electric actuator (14) on conduction valve (13), control box (1) internal fixation has controlling means (15), flow sensor (11) electric actuator (14) temperature sensor (12) all with controlling means (15) electric connection, controlling means (15) are received behind the flow detection signal of flow sensor (11) output, control electric actuator (14) are opened and close.
2. The energy saving system of air conditioning unit for factory building according to claim 1, wherein the control device (15) comprises a signal comparison circuit (16) pre-set with a flow reference signal and coupled to the flow sensor (11) for comparing the flow detection signal and the flow reference signal with each other and outputting a flow comparison signal, and an execution circuit (17) coupled to the signal comparison circuit (16) for receiving the flow comparison signal and controlling the on/off of the electric actuator (14).
3. The energy saving system of air conditioning unit for clean room as claimed in claim 2, wherein the signal comparison circuit (16) comprises a transistor Q1 and a first resistor, the base of the transistor Q1 is coupled to the signal output terminal of the flow sensor (11) for receiving the flow detection signal, the transmitter of the transistor Q1 is grounded, the collector of the transistor Q1 is coupled to one end of the first resistor for outputting the flow comparison signal to the execution circuit (17) to control the on/off of the execution circuit (17), one end of the first resistor is coupled to the power source Vcc, and the other end is connected to the collector of the transistor Q1.
4. The energy saving system of air conditioning unit for clean room as claimed in claim 3, wherein the execution circuit (17) comprises a third resistor, a transistor Q2 and a relay, one end of the third resistor is coupled to the power source Vcc, the other end of the third resistor is coupled to the collector of the transistor Q2, the base of the transistor Q2 is coupled to the connection point of the collector of the transistor Q1 and the first resistor to receive the flow comparison signal, the emitter of the transistor Q2 is connected to the ground behind the coil of the relay, and the normally closed contact of the relay is coupled to the power supply loop of the electric actuator (14) to control the on/off of the electric actuator (14).
5. The energy-saving system for air conditioning unit of clean factory building according to claim 1, wherein the periphery sides of said cooling water inlet pipe (5), said cooling water return pipe (6), said chilled water inlet pipe (8) and said chilled water return pipe (9) are all fixed with a pressure gauge (18).
6. The energy saving system of air conditioning unit for clean room as claimed in claim 1, wherein the cooling water inlet pipe (5) and the cooling water return pipe (6) are each provided with a rubber pipe (19) for placing the flow sensor (11) and the temperature sensor (12).
7. The energy-saving system for air conditioning unit of clean factory building according to claim 1, wherein the cooling water inlet pipe (5) and the chilled water inlet pipe (8) are both fixed with a filter screen (20) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176365.4U CN210861504U (en) | 2019-07-24 | 2019-07-24 | Air conditioning unit energy-saving system for cleaning factory building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176365.4U CN210861504U (en) | 2019-07-24 | 2019-07-24 | Air conditioning unit energy-saving system for cleaning factory building |
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| Publication Number | Publication Date |
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| CN210861504U true CN210861504U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921176365.4U Active CN210861504U (en) | 2019-07-24 | 2019-07-24 | Air conditioning unit energy-saving system for cleaning factory building |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283828A (en) * | 2020-10-16 | 2021-01-29 | 广州市机电安装有限公司 | Modular arrangement mode of refrigerating room equipment |
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2019
- 2019-07-24 CN CN201921176365.4U patent/CN210861504U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283828A (en) * | 2020-10-16 | 2021-01-29 | 广州市机电安装有限公司 | Modular arrangement mode of refrigerating room equipment |
| CN112283828B (en) * | 2020-10-16 | 2022-05-03 | 广州市机电安装有限公司 | Modular arrangement mode of refrigerating room equipment |
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