CN210568895U - Constant-flow quality adjusting type energy-saving control device of air conditioner cold and hot water system - Google Patents
Constant-flow quality adjusting type energy-saving control device of air conditioner cold and hot water system Download PDFInfo
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- CN210568895U CN210568895U CN201921107479.3U CN201921107479U CN210568895U CN 210568895 U CN210568895 U CN 210568895U CN 201921107479 U CN201921107479 U CN 201921107479U CN 210568895 U CN210568895 U CN 210568895U
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Abstract
The utility model discloses a constant flow quality adjusting type energy-saving control device of an air conditioner cold and hot water system, which comprises a water supply pipe, a water return pipe and a water pump, wherein the water inlet of the water pump is connected with a first water return pipe through a soft joint, and a water outlet pipeline is divided into two branches and then is respectively connected with a circulating water pipe and a second water return pipe; a butterfly valve and a pressure gauge are arranged on the first water return pipe, the second water return pipe is connected with a third water return pipe through a flow meter, and a temperature sensor, a thermometer, a pressure gauge, a butterfly valve, an electric two-way regulating valve and a butterfly valve are sequentially arranged on the third water return pipe along the water flow direction; a check valve and a digital locking balance valve are arranged on the circulating water pipe; the bypass water pipe is connected with the third water return pipe in parallel, and the water return pipe is connected with the water supply pipe in parallel; set gradually butterfly valve, manometer, Y type filter, manometer, temperature sensor and thermometer along the rivers direction on the delivery pipe, delivery pipe and circulating pipe intersect in muddy water pipe, mix and establish thermometer, butterfly valve along the rivers direction on the water pipe in proper order. The utility model discloses can realize the control to constant temperature and humidity air conditioner parameter dynamic adjustment.
Description
Technical Field
The utility model relates to an air conditioning unit water system control technical field especially relates to an air conditioner cold and hot water system constant flow quality regulation formula energy-saving control device.
Background
Taking an automobile factory as an example, a painting room in a painting workshop has strict precision requirements on temperature and humidity parameters of air, so that the air conditioning unit belongs to a constant-temperature constant-humidity air conditioner and has high requirements on flow stability of cold water and hot water in a coil pipe at the tail end of the air conditioner. A traditional air conditioner tail end cold and hot water system adopts a quantity adjusting control mode, and changes water flow entering an air conditioner coil pipe under the condition of keeping the supply and return water temperature of the air conditioner coil pipe unchanged. The change of water flow leads to the change of the water velocity in the coil pipe, and then causes the air side temperature change fluctuation of heat exchange with the coil pipe to be large, the control precision of air supply temperature and humidity is low, and especially under the working condition of small air volume, the air supply temperature and humidity of the air conditioner hardly meet the set precision requirement. Generally, in order to ensure the precision range of indoor temperature and humidity, the air supply quantity of an air conditioner needs to be increased, investment waste can be caused, and the operation energy consumption is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air conditioner hot and cold water system constant flow quality regulation formula energy-saving control device to the technical defect who exists among the prior art.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
a constant flow quality adjusting type energy-saving control device of an air conditioner cold and hot water system comprises a water supply pipe, a water return pipe and a water pump, wherein a water inlet of the water pump is connected with a first water return pipe through a soft joint, and a water outlet pipeline is divided into two branch pipelines and then is respectively connected with a circulating water pipe and a second water return pipe; the first water return pipe is provided with a first butterfly valve and a first pressure gauge, the second water return pipe is connected with a third water return pipe through a flow meter, and the third water return pipe is sequentially provided with a first temperature sensor, a first temperature gauge, a second pressure gauge, a second butterfly valve, an electric two-way regulating valve and a third butterfly valve along the water flow direction; a check valve and a digital locking balance valve are arranged on the circulating water pipe; the bypass water pipe is connected with a third water return pipe in parallel through a fourth butterfly valve, and the fourth water return pipe is connected with a water supply pipe in parallel; set gradually fifth butterfly valve, third manometer, Y type filter, fourth manometer, second temperature sensor and second thermometer along the rivers direction on the delivery pipe, delivery pipe and circulating pipe intersect in mixing the water pipe, mix and set gradually third thermometer and sixth butterfly valve along the rivers direction on the water pipe.
Furthermore, a first water drain pipe is arranged at the lowest point of the water supply pipe, a second water drain pipe is arranged at the lowest point of the bypass water pipe, and ball valves are respectively arranged on the first water drain pipe and the second water drain pipe.
Furthermore, automatic exhaust valves are arranged at the highest point of the water mixing pipe and the highest point of the first water return pipe.
Further, the flowmeter, the first temperature sensor and the second temperature sensor are respectively connected with an integrator so as to transmit the acquired signals to the integrator.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a device realizes the constant flow operation of air conditioning unit cold, hot water coil pipe through the partial return water of water pump mixture in air conditioning unit water supply, adopts the matter mode of regulation, namely through the aperture adjustment muddy water ratio of electronic two-way valve on the wet return, changes the water supply temperature of air conditioning unit, guarantees that the discharge of getting into the air conditioning coil pipe is invariable, realizes the accurate regulation control to the developments of constant temperature and humidity air conditioning parameter, has solved the unstable, air conditioner air capacity is big, when the heat matter exchange is too fast of cold and hot water flow, the problem that the air conditioning air supply parameter fluctuation range is big; the problems that the electric valve of the traditional water system quantity adjusting and controlling device acts frequently and the water system conveying energy consumption is large are solved.
Drawings
Fig. 1 is a schematic structural view of the constant flow mass adjusting type energy-saving control device of the air conditioner cold and hot water system of the present invention.
Fig. 2 is a control system schematic diagram of the constant flow mass adjusting type energy-saving control device of the air conditioner cold and hot water system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the constant flow quality adjusting type energy-saving control device for an air-conditioning cold and hot water system of the present invention comprises a water supply pipe a, a water mixing pipe B, a water return pipe C1C2C3, a circulating water pipe D, a bypass water pipe E, a water drain pipe F and a water pump 4; the water inlet of the water pump 4 is connected with the water return pipe C1 through a soft joint 12a, and the water outlet pipeline of the water pump 4 is divided into two branch pipelines which are respectively connected with the circulating water pipe D and the water return pipe C2. Wherein, the water return pipe C1 is provided with a butterfly valve 1a and a pressure gauge 7 a; the water return pipe C2 is connected with the water return pipe C3 through a flowmeter 9; the water return pipe C3 is sequentially provided with a temperature sensor 6b, a thermometer 5C, a pressure gauge 7d, a butterfly valve 1d, an electric two-way regulating valve 10 and a butterfly valve 1e along the water flow direction. Wherein, the circulating water pipe D is sequentially provided with a check valve 3 for preventing the medium in the pipeline from flowing backwards and a digital locking balance valve 2 capable of accurately adjusting the pressure drop and the flow of the medium along the water flow direction. Wherein, the bypass water pipe E is connected with the water return pipe C3 in parallel through a butterfly valve 1 f; the return pipe C4 is connected in parallel with the water supply pipe a. Wherein, a butterfly valve 1c, a pressure gauge 7c, a Y-shaped filter 8, a pressure gauge 7b, a temperature sensor 6a and a thermometer 5b are sequentially arranged on the water supply pipe A along the water flow direction; the water supply pipe A and the circulating water pipe D are intersected with the water mixing pipe B, and the water mixing pipe B is sequentially provided with a thermometer 5a and a butterfly valve 1B along the water flow direction.
Wherein, a drain pipe F1 is arranged at the lowest point of the water supply pipe A, and a ball valve 11a is arranged on the drain pipe F1; a drain pipe F2 is arranged at the lowest point of the bypass water pipe E, and a ball valve 11b is arranged on the drain pipe F2; the highest point of the water mixing pipe B is provided with an automatic exhaust valve 13B, and the highest point of the water return pipe C1 is provided with an automatic exhaust valve 13 a.
Wherein, the flowmeter 9 measures the water flow of the water return pipe C2 and transmits a flow signal to the integrator 14 carried by the flowmeter; the temperature sensor 6a measures the water temperature of the water supply pipe a, and the temperature sensor 6b measures the water temperature of the water return pipe C3 and transmits a temperature signal to the integrator 14. The integrator can display real-time flow, real-time temperature, real-time cold load and heat exchange quantity, and has the functions of data storage, parameter query and data remote transmission.
The working principle is as follows: the water pump 4 runs under a certain specific working condition, and the water flow in and out of the air-conditioning coil pipe is ensured to be constant; the water mixing ratio of the circulating water pipe D and the water supply pipe A is changed by adjusting the opening of the electric two-way valve 10, so that the water supply and return temperatures of the air conditioner coil pipe are changed according to the required heat exchange quantity.
The control device of the present invention will be described in detail below (the arrow in fig. 1 represents the water flow direction):
(1) butterfly valves 1a, 1b, 1c, 1d and 1e are normally open, butterfly valve 1f is normally closed; the ball valves 11a, 11b are normally closed.
(2) When the medium in the pipeline is cold water, the temperature and the humidity of the air supply of the air conditioner are higher than the set values, the opening degree of the electric two-way regulating valve 10 is increased, the water flow in the water return pipes C2 and C3 is increased, the water flow in the water supply pipe A is increased, the water flow in the circulating water pipe D is reduced, the water temperature in the water mixing pipe B is reduced, and the temperature and the humidity of the air supply of the air conditioner are gradually reduced and tend to the set values.
(3) When the medium in the pipeline is cold water, the temperature and the humidity of the air supply of the air conditioner are lower than the set values, the opening degree of the electric two-way regulating valve 10 is reduced, the water flow in the water return pipes C2 and C3 is reduced, the water flow in the water supply pipe A is reduced, the water flow in the circulating water pipe D is increased, the water temperature in the water mixing pipe B is increased, and the temperature and the humidity of the air supply of the air conditioner are gradually increased and tend to the set values.
(4) When the medium in the pipeline is hot water, the temperature and the humidity of the air supply of the air conditioner are higher than set values, the opening degree of the electric two-way regulating valve 10 is reduced, the water flow in the water return pipes C2 and C3 is reduced, the water flow in the water supply pipe A is reduced, the water flow in the circulating water pipe D is increased, the water temperature in the water mixing pipe B is reduced, and the temperature and the humidity of the air supply of the air conditioner are gradually reduced and tend to the set values.
(5) When the medium in the pipeline is hot water, the temperature and the humidity of the air supply of the air conditioner are lower than set values, the opening degree of the electric two-way regulating valve 10 is increased, the water flow in the water return pipes C2 and C3 is increased, the water flow in the water supply pipe A is increased, the water flow in the circulating water pipe D is reduced, the water temperature in the water mixing pipe B is increased, and the temperature and the humidity of the air supply of the air conditioner are gradually increased and tend to the set values.
(6) The flowmeter 9 measures the water flow of the water return pipe C2 and transmits a flow signal to the integrator 14 carried by the flowmeter, the temperature sensor 6a measures the water temperature of the water supply pipe A, the temperature sensor 6b measures the water temperature of the water return pipe C3 and transmits a temperature signal to the integrator 14, and the integrator 14 displays the real-time flow, the real-time temperature, the real-time load and the accumulated heat exchange amount, and has the functions of data storage, parameter query and data remote transmission.
(8) When the electric two-way regulating valve 10 is overhauled, the butterfly valves 1d and 1e are closed, and the butterfly valve 1f is opened; when the water pump 4, the thermometer 5, the pressure gauge 7 and other accessories are overhauled, the butterfly valves 1a, 1b, 1c and 1e are closed, the ball valves 11a and 11b are opened, and water is drained through the drain pipe F.
As shown in fig. 2, take the fresh air conditioner as an example, the utility model discloses the control system principle does: the control system collects the temperature and the humidity of air supply of the air conditioner, compares and analyzes the temperature and the humidity with set temperature and humidity, and sends an action instruction signal to the electric two-way valve to adjust the opening of the electric two-way valve and change the water flow in the circulating water pipe, thereby realizing the change of the heat exchange quantity of the supply water temperature and the return water temperature of the air conditioner coil pipe according to the requirements.
Correspondingly, the signals collected and monitored by the control system comprise an air supply temperature signal and a humidity signal of the air conditioning unit; working, fault and start-stop signals of the water pump; the flowmeter outputs a signal, a water supply temperature signal and a return water temperature signal; and an action signal of the electric two-way valve. The control system DDC external line table is shown in table 1.
TABLE 1
Above can find out, the utility model discloses a water pump realizes air conditioning unit cold, the constant flow operation of hot water coil pipe in air conditioning unit water supply mixing part return water, adopt the matter mode of regulation, through the aperture adjustment muddy water ratio of electronic two-way valve on the wet return promptly, change air conditioning unit's supply, return water temperature, guarantee that the discharge that gets into the air conditioning coil pipe is invariable, realize the dynamic accurate regulation control to constant temperature and humidity air conditioning parameter, solved the unstable, air conditioner air volume of cold and hot water flow, when the heat matter exchange is too fast, the problem that the air conditioning air supply parameter fluctuation range is big; the problems that the electric valve of the traditional water system quantity adjusting and controlling device acts frequently and the water system conveying energy consumption is large are solved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A constant flow quality adjusting type energy-saving control device of an air conditioner cold and hot water system is characterized by comprising a water supply pipe, a water return pipe and a water pump, wherein a water inlet of the water pump is connected with a first water return pipe through a soft joint, and a water outlet pipeline is divided into two branch pipelines and then is respectively connected with a circulating water pipe and a second water return pipe; the first water return pipe is provided with a first butterfly valve and a first pressure gauge, the second water return pipe is connected with a third water return pipe through a flow meter, and the third water return pipe is sequentially provided with a first temperature sensor, a first temperature gauge, a second pressure gauge, a second butterfly valve, an electric two-way regulating valve and a third butterfly valve along the water flow direction; a check valve and a digital locking balance valve are arranged on the circulating water pipe; the bypass water pipe is connected with a third water return pipe in parallel through a fourth butterfly valve, and the fourth water return pipe is connected with a water supply pipe in parallel; set gradually fifth butterfly valve, third manometer, Y type filter, fourth manometer, second temperature sensor and second thermometer along the rivers direction on the delivery pipe, delivery pipe and circulating pipe intersect in mixing the water pipe, mix and set gradually third thermometer and sixth butterfly valve along the rivers direction on the water pipe.
2. The constant flow mass control type energy saving control device for an air conditioning cold and hot water system according to claim 1, wherein a first drain pipe is provided at the lowest point of the water supply pipe, a second drain pipe is provided at the lowest point of the bypass water pipe, and ball valves are provided at the first drain pipe and the second drain pipe, respectively.
3. The constant-flow quality-adjustable energy-saving control device for the cold and hot water system of the air conditioner as claimed in claim 1, wherein automatic exhaust valves are arranged at the highest point of the water mixing pipe and the highest point of the first return pipe.
4. The constant flow mass regulation type energy-saving control device of an air conditioning cold and hot water system according to claim 1, wherein the flow meter, the first temperature sensor and the second temperature sensor are respectively connected with an integrator to transmit collected signals to the integrator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107479.3U CN210568895U (en) | 2019-07-16 | 2019-07-16 | Constant-flow quality adjusting type energy-saving control device of air conditioner cold and hot water system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921107479.3U CN210568895U (en) | 2019-07-16 | 2019-07-16 | Constant-flow quality adjusting type energy-saving control device of air conditioner cold and hot water system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319509A (en) * | 2019-07-16 | 2019-10-11 | 中国汽车工业工程有限公司 | A kind of air conditioner cold-heat water system constant flow matter adjustable type energy-saving control device |
| CN114183983A (en) * | 2021-12-16 | 2022-03-15 | 深圳市鸿博精密冷却有限公司 | Medical equipment cooling water circulation system based on internet |
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2019
- 2019-07-16 CN CN201921107479.3U patent/CN210568895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319509A (en) * | 2019-07-16 | 2019-10-11 | 中国汽车工业工程有限公司 | A kind of air conditioner cold-heat water system constant flow matter adjustable type energy-saving control device |
| CN114183983A (en) * | 2021-12-16 | 2022-03-15 | 深圳市鸿博精密冷却有限公司 | Medical equipment cooling water circulation system based on internet |
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