CN214536613U - Large-temperature-difference air conditioner water delivery and distribution system based on water mixing pump - Google Patents
Large-temperature-difference air conditioner water delivery and distribution system based on water mixing pump Download PDFInfo
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- CN214536613U CN214536613U CN202120197705.2U CN202120197705U CN214536613U CN 214536613 U CN214536613 U CN 214536613U CN 202120197705 U CN202120197705 U CN 202120197705U CN 214536613 U CN214536613 U CN 214536613U
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Abstract
The utility model relates to an air conditioner control technical field, concretely relates to big difference in temperature air conditioner water transmission and distribution system based on mix water pump. Including the control unit, mix the water pump, the governing valve, mix thermometer and return water thermometer, the return water pipe is through mixing water pipe and user's inlet tube intercommunication, mix the water pump and set up on mixing the water pipe, mix the water thermometer and set up between water pump export and end user's the water inlet, the return water thermometer sets up between end user's delivery port and the muddy water pump entry, mix the water thermometer, the data output part and the control unit's of return water thermometer data input part are connected, the control signal output part and the muddy water pump of control unit, the control signal input part of governing valve is connected. The relation that the water supply and return parameters of the energy station in the air-conditioning water system at the direct supply end and the energy consumption parameters at the end of the user are consistent is decoupled, the water supply and return temperature difference is increased, the circulating water quantity of the system is reduced, the consumption of a delivery pump is effectively reduced, and the temperature value is kept stable.
Description
Technical Field
The utility model relates to an air conditioner control technical field, concretely relates to big difference in temperature air conditioner water transmission and distribution system based on mix water pump.
Background
Compared with the central air conditioning system independently arranged in each single building, the central cooling and heating system can reduce the total installed capacity of the unit by about 20-30%, and correspondingly reduce the initial investment of a power transformation and distribution system, a refrigeration machine room, power transformation and distribution equipment and the like, the area of the machine room is correspondingly reduced by more than 20-50%, and the system construction investment is reduced. The energy utilization rate is improved, the cold and heat source equipment is managed in a centralized manner, the cascade utilization of energy can be realized, a large advanced and efficient device is adopted, the efficient operation is realized, and the equipment utilization rate is improved.
The air-conditioning water delivery pump consumes about 30% of the total energy consumption of the regional energy supply system, and is the largest energy consumption equipment except the air-conditioning main machine, so that the energy consumption of the delivery pump is reduced, and the energy-saving and consumption-reducing key points in the regional energy supply system are realized. The large-temperature-difference transmission and distribution is a main means for reducing the consumption of an air-conditioning water delivery pump at present, but in a system at the tail end of the air-conditioning water direct supply, the water supply and return parameters of an energy station are often required to be consistent with the energy consumption parameters of a tail end user, and the application of the large-temperature-difference transmission and distribution is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a big difference in temperature air conditioner water delivery and distribution system based on muddy water pump to prior art's defect, can remove the energy station and supply the return water parameter need with terminal restraint that can the parameter unanimity, the increase supplies the return water difference in temperature, reduces the system circulation water yield, effectively reduces the delivery pump and consumes.
The utility model relates to a big difference in temperature air conditioner water delivery and distribution system based on mix water pump, including energy station and end user, the delivery port at energy station passes through the user inlet tube and is connected with end user's water inlet, end user's delivery port passes through the wet return and is connected its characterized in that with the water inlet at energy station: still include and mix water pump, governing valve, the return water pipe is through mixing water pipe and user's inlet tube intercommunication, mix the water pump and set up on mixing the water pipe, the governing valve sets up between water pump outlet and end user's water inlet.
Preferably, the water mixing device further comprises a water mixing thermometer, and the water mixing thermometer and the regulating valve are sequentially arranged between the outlet of the water mixing pump and the water inlet of the end user.
Preferably, the system further comprises a water return thermometer, wherein the water return thermometer is arranged between the water outlet of the end user and the inlet of the water mixing pump.
Preferably, the system further comprises an energy station outlet thermometer and an outer net circulating pump, wherein the energy station outlet thermometer and the outer net circulating pump are arranged on the user water inlet pipe.
Comparatively preferred, the user inlet tube includes main inlet tube and a plurality of inlet tube that is used for being connected to each end user, main inlet tube one end is connected with the delivery port in energy station, and the other end advances water piping connection with each, energy station export thermometer and outer net circulating pump all set up in on the main inlet tube.
Preferably, the water mixing pump is a variable frequency pump.
The utility model has the advantages that: a water mixing pump is arranged between a water inlet pipe and a water return pipe of a tail end user, the relation that water supply and return parameters of an energy station are required to be consistent with energy consumption parameters of the tail end of the user in an air conditioning water system of the energy station direct supply tail end is decoupled, the water supply and return temperature difference is increased, the circulating water quantity of the system is reduced, the consumption of a delivery pump is effectively reduced, and the temperature value is kept stable. The water inlet pipe is provided with an adjusting valve to keep the return water temperature of the end user stable at a set value. Establish the thermometer on inlet tube, wet return, more be favorable to audio-visual monitoring temperature to control the aperture of mixing water pump frequency and governing valve, further guarantee temperature accurate control and stability.
Drawings
Fig. 1 is a schematic connection diagram of a large temperature difference air conditioning water delivery and distribution system based on a water mixing pump of the present invention;
fig. 2 is a schematic diagram of a control flow of the water mixing pump of the present invention;
fig. 3 is a control logic block diagram of the water mixing pump of the present invention;
fig. 4 is a control logic block diagram of the regulating valve of the present invention;
fig. 5 is a schematic control flow diagram of the external network circulating pump of the present invention;
fig. 6 is a logic block diagram of the external network circulation pump of the present invention.
In the figure: 1-energy station outlet thermometer, 2-external net circulating pump, 3-water mixing pump, 4-regulating valve, 5-end user, 6-backwater thermometer and 7-water mixing thermometer
Detailed Description
The invention will be further described in detail with reference to the drawings and the following detailed description, which are provided for the purpose of clearly understanding the invention and are not intended to limit the invention.
As shown in fig. 1, the large temperature difference air-conditioning water delivery and distribution system based on the water mixing pump comprises an energy station and an end user 5, wherein a water outlet of the energy station is connected with a water inlet of the end user 5 through a user water inlet pipe, a water outlet of the end user 5 is connected with the water inlet of the energy station through a water return pipe, the large temperature difference air-conditioning water delivery and distribution system further comprises a control unit, the water mixing pump 3, a regulating valve 4, a water mixing thermometer 7 and a water return thermometer 6, the water return pipe is communicated with the user water inlet pipe through a water mixing pipe, the water mixing pump 3 is arranged on the water mixing pipe, the water mixing thermometer 7 is arranged between an outlet of the water mixing pump 3 and the water inlet of the end user 5, and the water return thermometer 6 is arranged between the water outlet of the end user 5 and an inlet of the water mixing pump 3.
The external net circulating pump 2, the water mixing pump 3 and the regulating valve 4 can be manually controlled and also can be automatically controlled through the control unit.
When the control unit is adopted for control, the data output end of the mixed water thermometer 7 is connected with the first data input end of the control unit, the data output end of the return water thermometer 6 is connected with the second data input end of the control unit, the first control signal output end of the control unit is connected with the control signal input end of the mixed water pump 3, and the second control signal output end of the control unit is connected with the control signal input end of the regulating valve 4.
Preferably, the system further comprises an energy station outlet thermometer 1 and an outer net circulating pump 2, wherein the energy station outlet thermometer 1 and the outer net circulating pump 2 are arranged on a water inlet pipe of a user.
Comparatively preferred, the user inlet tube includes main inlet tube and a plurality of inlet tube that is used for being connected to each end user 5, main inlet tube one end is connected with the delivery port in energy station, and the other end advances water piping connection with each, energy station export thermometer 1 and extranet circulating pump 2 all set up in on the main inlet tube.
The number of the water mixing pump 3, the adjusting valve 4, the water mixing thermometer 7 and the backwater thermometer 6 is consistent with that of the end user 5, and the water mixing pump 3 is a variable frequency pump.
As shown in fig. 2 and 3, the control flow of the water mixing pump is as follows:
calculating Δ Tri，The Δ Tri＝Trdi-Tri；
When the system is in the refrigeration working condition, if delta TriIf the frequency is more than 0, the ith water mixing pump 3 is operated in an increasing frequency mode, and if the frequency is delta TriIf the frequency is less than 0, the ith water mixing pump 3 operates in a frequency reduction mode;
when the system is in the heating working condition, if delta TriIf the frequency is more than 0, the ith water mixing pump 3 operates in a frequency reduction mode, and if the frequency is delta TriIf the frequency is less than 0, the ith water mixing pump 3 operates in an ascending frequency mode;
when f ishiIs not more than fhiminAnd the duration exceeds thi0While the ith water mixing pump 3 is driven by the frequency fhiminAnd (5) operating.
Wherein, TrdiSetting a temperature value, T, for the inlet pipe of the ith end user 5riIs the actual temperature value of the inlet pipe, f, of the ith end user 5hiIs the actual operating frequency, f, of the ith water mixing pump 3himinIs the minimum value of the operating frequency t of the ith water mixing pump 3hi0And delaying the time(s) after the operation frequency of the ith mixing pump at the tail end is lower than the minimum set value.
As shown in fig. 4, the control flow of the regulator valve is as follows:
calculating Δ ThiSaid Δ Thi＝Thdi-Thi；
When the system is in the refrigeration working condition, if delta ThiIf the opening degree of the regulating valve 4 of the water inlet pipe of the ith end user 5 is more than 0, the opening degree is reduced, and if the opening degree is delta ThiIf the opening degree of the regulating valve 4 of the water inlet pipe of the ith terminal user 5 is less than 0, the opening degree is increased;
when the system is in the heating working condition, if delta ThiIf the opening degree of the regulating valve 4 of the water inlet pipe of the ith end user 5 is more than 0, the opening degree is increased, and if the opening degree is delta ThiIf the opening degree of the regulating valve 4 of the water inlet pipe of the ith terminal user 5 is less than 0, the opening degree of the regulating valve 4 is reduced;
wherein, ThdiSet temperature value, T, for the water return of the ith end user 5hiIs the actual temperature value of the water return pipe of the ith end user 5.
As shown in fig. 5 and 6, the control flow of the external network circulation pump 2 is as follows:
calculating Δ K, where Δ K ═ Ksd-Kmax；
When delta K is larger than 0, the external network circulating pump 2 operates in a frequency reduction mode;
when delta K is less than 0, the external network circulating pump 2 operates in an up-conversion mode;
when f isxhIs not more than fxhminAnd the duration exceeds txh0While the external network circulation pump 2 is at frequency fxhminAnd (5) operating.
Wherein, KsdThe set value of the opening degree of the regulating valve 4 on the water inlet pipe of the end user 5 of the most unfavorable loop, KmaxMaximum opening, f, of regulating valve 4 on water inlet pipe for end user 5xhIs the actual operating frequency, f, of the external network circulating pump 2xhminIs the minimum value of the operating frequency, t, of the external network circulation pump 2xh0And delaying the time(s) after the running frequency of the circulating pump of the external network of the energy station is lower than the minimum set value.
In this embodiment, i takes any value from 1 to n, where n is the total number of end users.
The above description is only exemplary of the invention and is not intended to limit the invention, and any modifications, equivalent alterations, improvements and the like which are made within the spirit and principle of the invention are all included in the scope of the claims which are appended hereto.
Claims (6)
1. The utility model provides a big difference in temperature air conditioner water transmission and distribution system based on mix water pump, includes energy station and end user, the delivery port in energy station passes through the user inlet tube and is connected with end user's water inlet, end user's delivery port passes through the wet return and is connected its characterized in that with the water inlet in energy station: still include and mix water pump, governing valve, the return water pipe is through mixing water pipe and user's inlet tube intercommunication, mix the water pump and set up on mixing the water pipe, the governing valve sets up between water pump outlet and end user's water inlet.
2. The large temperature difference air-conditioning water delivery and distribution system based on the mixing pump as claimed in claim 1, wherein: still include muddy water thermometer, muddy water thermometer and governing valve set gradually between muddy water pump export and end user's water inlet.
3. The large temperature difference air-conditioning water delivery and distribution system based on the mixing pump as claimed in claim 1, wherein: the water mixing device is characterized by further comprising a water return thermometer, wherein the water return thermometer is arranged between the water outlet of the end user and the inlet of the water mixing pump.
4. The large temperature difference air-conditioning water delivery and distribution system based on the mixing pump as claimed in claim 1, wherein: the energy station outlet thermometer and the outer net circulating pump are arranged on the user water inlet pipe.
5. The large temperature difference air-conditioning water delivery and distribution system based on the water mixing pump as claimed in claim 2, wherein: the user inlet tube includes main inlet tube and a plurality of inlet tube that is used for being connected to each end user, main inlet tube one end is connected with the delivery port at energy station, and the other end advances water piping connection with each, energy station export thermometer and outer net circulating pump all set up in on the main inlet tube.
6. The large temperature difference air-conditioning water delivery and distribution system based on the mixing pump as claimed in claim 1, wherein: the water mixing pump is a variable frequency pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120197705.2U CN214536613U (en) | 2021-01-25 | 2021-01-25 | Large-temperature-difference air conditioner water delivery and distribution system based on water mixing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120197705.2U CN214536613U (en) | 2021-01-25 | 2021-01-25 | Large-temperature-difference air conditioner water delivery and distribution system based on water mixing pump |
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| Publication Number | Publication Date |
|---|---|
| CN214536613U true CN214536613U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120197705.2U Active CN214536613U (en) | 2021-01-25 | 2021-01-25 | Large-temperature-difference air conditioner water delivery and distribution system based on water mixing pump |
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| CN (1) | CN214536613U (en) |
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2021
- 2021-01-25 CN CN202120197705.2U patent/CN214536613U/en active Active
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