CN217737390U

CN217737390U - Intelligent variable-frequency refrigeration circulating pump

Info

Publication number: CN217737390U
Application number: CN202220962835.5U
Authority: CN
Inventors: 曹亮亮
Original assignee: Shanghai Sanjiao Water Technology Engineering Co ltd
Current assignee: Shanghai Sanjiao Water Technology Engineering Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-11-04
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses an intelligence frequency conversion refrigeration circulating pump, including refrigeration cycle pump package, refrigeration cycle pump package both ends are connected with water intake pipe and outlet pipe way respectively, water chilling unit is installed through the circulation inlet tube to water intake pipe one end, outlet pipe way one end has first pipeline and second pipeline through circulation outlet pipe connection, first pipeline and second pipeline one end all communicate with water chilling unit's total inlet tube, the second pipeline communicates with the air conditioner end, it has pressure difference sensor to connect in parallel on the second pipeline of the terminal both sides of air conditioner, water supply temperature sensor is installed to total inlet tube upside, install return water temperature sensor on the circulation outlet pipe, the utility model discloses can be according to received refrigerated water inlet and outlet temperature and terminal pressure difference signal, adjust the power frequency of frozen water pump, make the refrigerated water inlet and outlet temperature difference approach the design value to make the water pump move under big difference in little flow operating mode, the water pump operation is more energy-conserving, more traditional freezing station supplies the return water pressure difference control to save more than 10%.

Description

Intelligent variable-frequency refrigeration circulating pump

Technical Field

The utility model relates to a frozen water pump technical field specifically is an intelligence frequency conversion refrigeration circulating pump.

Background

The chilled water pump is a cooling water circulation system and is generally applied to large refrigeration equipment such as a central air conditioner and the like. Usually, the capacity of a chilled water pump is designed according to the highest temperature and the full rate, and a 10% -20% margin is reserved on the basis, a water pump system works at the fixed maximum water flow for a long time, and the actual heat load regulated by the working principle diagram of the central air conditioner in the air figure 1 is far lower than the designed load in most of the time due to large changes of seasons, day and night and housing rate. Compared with the maximum design load (load rate 100%) for determining the flow and pressure of the water pump, the operation time of the load rate below 5O% in one year is nearly half, the design temperature of the chilled water is 5-7 ℃, and the temperature of the chilled water is only 2-4 ℃ in the majority of the year, namely the water pump is operated at full power, so that the energy loss of a pipeline is increased, and the transmission energy of the operation of the water pump is wasted. The energy is inefficiently used, and the flow can be automatically regulated by the variable-frequency speed regulation technology, and the energy is obviously saved.

The existing frequency converter of the refrigeration circulating water pump can only adjust the working frequency of the water pump to carry out frequency conversion work according to the received control signal of the centralized control system, and the defects of the refrigeration circulating water pump and the frequency converter are as follows: the current running flow, lift, power, frequency and efficiency parameters of the water pump cannot be displayed, and when a flow sensor in a fluid system breaks down, the automatic control system is paralyzed; and the temperature signals of the inlet and outlet water of the chilled water and the differential pressure signals of the tail end cannot be received, so that the operation of the chilled water pump at a reasonable working frequency cannot be controlled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an intelligence frequency conversion refrigeration circulating pump to solve among the prior art uncontrollable frozen water pump at reasonable operating frequency operation problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an intelligence frequency conversion refrigeration circulating pump, includes refrigeration circulating pump group, refrigeration circulating pump group both ends are connected with water intake pipe and outlet pipe way respectively, water chilling unit is installed through the circulation inlet tube to water intake pipe one end, outlet pipe way one end has first pipeline and second pipeline through circulation outlet pipe connection, first pipeline and second pipeline one end all communicate with water chilling unit's total inlet tube, the second pipeline communicates with the air conditioner is terminal, the second pipeline of the terminal both sides of air conditioner goes up to connect in parallel has pressure differential sensor, water supply temperature sensor is installed to total inlet tube upside, install return water temperature sensor on the circulation outlet pipe.

Furthermore, a first electromagnetic valve is installed on the first pipeline, and a second electromagnetic valve is installed on the second pipeline.

Furthermore, the water supply temperature sensor is communicated with the refrigeration cycle pump set through a pipeline, and the water return temperature sensor is communicated with the refrigeration cycle pump set through a pipeline.

Furthermore, one side of the differential pressure sensor is communicated with a cooling cavity in the refrigeration cycle pump set through a pipeline.

Furthermore, the refrigeration cycle pump unit comprises a machine shell, a circulating water cooling channel is arranged inside the machine shell, and two ends of the circulating water cooling channel are respectively communicated with the water inlet pipeline and the water outlet pipeline.

Furthermore, the circulating water cooling channels are distributed in the shell, and the circulating water cooling channels are arranged in a spiral shape.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a refrigeration cycle pump package and cooling water set and each pipeline that are equipped with, and the second pipeline of the terminal both sides of air conditioner is gone up to connect in parallel has differential pressure sensor, water supply temperature sensor is installed to total inlet tube upside, install return water temperature sensor on the circulation outlet pipe, make can be according to received refrigerated water business turn over water temperature and terminal pressure difference signal, adjust frozen water pump's power frequency, make the refrigerated water business turn over water temperature difference be close to the design value, thereby make the water pump move under the little flow operating mode of big difference in temperature, the water pump operation is more energy-conserving, more than 10% of freezing station confession return water pressure difference control is decided to the tradition.

2. The utility model discloses a refrigeration cycle pump package is including the casing that is equipped with, and the inside circulating water cooling passageway that is provided with of casing, and circulating water cooling passageway both ends respectively with inlet channel and outlet pipe way intercommunication, the distribution that the circulating water cooling passageway all with inside the casing, and the spiral heliciform is set to the circulating water cooling passageway for can carry out the water-cooling heat dissipation treatment all with interior to refrigeration cycle pump package, cooling efficiency is higher.

3. The utility model discloses increased the intelligent control screen on traditional converter, the intelligent control screen comprises singlechip, memory, wired and wireless communication module, control screen and relevant supplementary components and parts. The intelligent control screen can be programmed by C language, and the performance parameters of the water pump such as flow, lift, power, frequency and efficiency can be input into the intelligent control screen for storage before the equipment leaves the factory. A secondary operation control curve of the water pump is preset in a control program, and the operation curve parameters are corrected by combining site working conditions, so that the water pump can operate according to the operation curve and is more energy-saving.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic cross-sectional view of the internal structure of the casing of the present invention.

In the figure: 1. a refrigeration cycle pump group; 2. a water chilling unit; 3. circulating a water inlet pipe; 4. a water inlet pipeline; 5. a water outlet pipeline; 6. a second pipeline; 7. a first pipeline; 8. an air conditioner terminal; 9. a first solenoid valve; 10. a water supply temperature sensor; 11. a backwater temperature sensor; 12. a second solenoid valve; 13. a differential pressure sensor; 14. a housing; 15. a circulating water cooling channel; 16. a main water inlet pipe; 17. and circulating a water outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 and fig. 2, in an embodiment of the present invention, an intelligent variable frequency refrigeration circulating pump includes a refrigeration circulating pump set 1, two ends of the refrigeration circulating pump set 1 are respectively connected with a water inlet pipe 4 and a water outlet pipe 5, one end of the water inlet pipe 4 is installed with a water chiller 2 through a circulating water inlet pipe 3, one end of the water outlet pipe 5 is connected with a first pipeline 7 and a second pipeline 6 through a circulating water outlet pipe 17, one ends of the first pipeline 7 and the second pipeline 6 are both communicated with a main water inlet pipe 16 of the water chiller 2, the second pipeline 6 is communicated with an air conditioner terminal 8, so that the power frequency of the refrigeration pump can be adjusted according to the received inlet and outlet temperature of the refrigeration water and the terminal pressure difference signal, the inlet and outlet temperature difference of the refrigeration water is close to a design value, thereby the water pump operates under a large temperature difference and a small flow condition, the water pump operates more energy-saving, the second pipelines 6 at two sides of the air conditioner terminal 8 are connected in parallel with a pressure difference sensor 13, a water supply temperature sensor 10 is installed at the upper side of the main water inlet pipe 16, and a return water temperature sensor 11 is installed on the circulating water outlet pipe 17; an intelligent control screen is arranged on the outer side of the refrigeration cycle pump unit 1, and the intelligent control screen consists of a single chip microcomputer, a memory, a wired and wireless communication module, a control screen and related auxiliary components. The intelligent control screen can be programmed by C language, and the performance parameters of the water pump such as flow, lift, power, frequency and efficiency can be input into the intelligent control screen for storage before the equipment leaves the factory. A secondary operation control curve of the water pump is preset in a control program, and the parameters of the operation curve are corrected by combining site working conditions, so that the water pump can operate according to the operation curve, and the energy is saved.

Preferably, the first pipeline 7 is provided with a first electromagnetic valve 9, and the second pipeline 6 is provided with a second electromagnetic valve 12, so that the first pipeline 7 or the second pipeline 6 can be electrically controlled to be opened or closed conveniently.

Preferably, the water supply temperature sensor 10 is communicated with the refrigeration cycle pump unit 1 through a pipeline, and the water return temperature sensor 11 is communicated with the refrigeration cycle pump unit 1 through a pipeline, so that temperature measurement processing can be conveniently carried out on a water inlet and a water outlet of the refrigeration cycle pump unit 1.

Preferably, one side of the differential pressure sensor 13 is communicated with a cooling cavity inside the refrigeration cycle pump unit 1 through a pipeline, so that differential pressure measurement and comparison processing of the air conditioner tail end 8 are facilitated.

Preferably, the refrigeration cycle pump unit 1 includes the casing 14 that is equipped with, and the inside circulating water cooling passageway 15 that is provided with of casing 14, and circulating water cooling passageway 15 both ends communicate with water inlet pipe 4 and outlet pipe way 5 respectively, and the distribution that circulating water cooling passageway 15 all with is inside casing 14, and circulating water cooling passageway 15 sets to the heliciform for can carry out the water-cooling heat dissipation treatment all with inside to the refrigeration cycle pump unit 1, the cooling efficiency is higher.

The utility model discloses a theory of operation and use flow: through the refrigeration cycle pump unit 1, the water chilling unit 2 and each pipeline which are arranged, the pressure difference sensor 13 is connected in parallel on the second pipeline on two sides of the tail end 8 of the air conditioner, the water supply temperature sensor 10 is installed on the upper side of the main water inlet pipe 16, the return water temperature sensor 11 is installed on the circulating water outlet pipe 17, the water supply temperature sensor 10 is communicated with the refrigeration cycle pump unit 1 through a pipeline, and the return water temperature sensor 11 is communicated with the refrigeration cycle pump unit 1 through a pipeline, so that the power frequency of the refrigeration water pump can be adjusted according to the received inlet and outlet temperature of the refrigeration water and the tail end pressure difference signal, the inlet and outlet temperature difference of the refrigeration water is close to the design value, the water pump can run under the working condition of large temperature difference and small flow, the water pump runs more energy-saving, and the energy is saved by more than 10% compared with the traditional fixed refrigeration station.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an intelligence frequency conversion refrigeration circulating pump, includes refrigeration circulating pump group (1), its characterized in that: freezing circulating pump group (1) both ends are connected with water intake pipe (4) and outlet pipe way (5) respectively, water intake pipe (4) one end is installed cold water set (2) through circulation inlet tube (3), outlet pipe way (5) one end is connected with first pipeline (7) and second pipeline (6) through circulation outlet pipe (17), first pipeline (7) and second pipeline (6) one end all communicate with total inlet tube (16) of cold water set (2), second pipeline (6) and terminal (8) intercommunication of air conditioner, it has differential pressure sensor (13) to go up the antithetical couplet on second pipeline (6) of terminal (8) both sides of air conditioner, water supply temperature sensor (10) are installed to total inlet tube (16) upside, install return water temperature sensor (11) on circulation outlet pipe (17).

2. The intelligent variable-frequency refrigeration circulating pump of claim 1, wherein: a first electromagnetic valve (9) is installed on the first pipeline (7), and a second electromagnetic valve (12) is installed on the second pipeline (6).

3. The intelligent variable-frequency refrigerating circulation pump according to claim 1, characterized in that: the water supply temperature sensor (10) is communicated with the refrigeration cycle pump set (1) through a pipeline, and the water return temperature sensor (11) is communicated with the refrigeration cycle pump set (1) through a pipeline.

4. The intelligent variable-frequency refrigerating circulation pump according to claim 1, characterized in that: one side of the differential pressure sensor (13) is communicated with a cooling cavity in the refrigeration cycle pump set (1) through a pipeline.

5. The intelligent variable-frequency refrigeration circulating pump of claim 1, wherein: the refrigeration circulating pump set (1) comprises a machine shell (14), a circulating water cooling channel (15) is arranged inside the machine shell (14), and two ends of the circulating water cooling channel (15) are respectively communicated with a water inlet pipeline (4) and a water outlet pipeline (5).

6. The intelligent variable-frequency refrigeration circulating pump of claim 5, wherein: the circulating water cooling channels (15) are distributed in the shell (14), and the circulating water cooling channels (15) are arranged in a spiral shape.