CN212930165U

CN212930165U - Time-sharing zone-control two-network distributed variable-frequency energy-saving heating system

Info

Publication number: CN212930165U
Application number: CN202021586091.9U
Authority: CN
Inventors: 闫晓冬; 孙豪杰; 史海峰; 张华鹏; 杨永业
Original assignee: Yantai Dongchang Heat Supply Co ltd; Yantai Houde Ruihua Energy Saving Technology Co ltd
Current assignee: Yantai Dongchang Heat Supply Co ltd; Yantai Houde Ruihua Energy Saving Technology Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-04-09
Anticipated expiration: 2030-08-03

Abstract

The application relates to a two-network distributed variable-frequency energy-saving heating system controlled in a time-division and area-division manner, which comprises a water collector and a secondary network water return pipe communicated with the water collector, wherein the secondary network water return pipe is communicated with a user end at one end far away from the water collector; a two-network distributed circulating pump for providing power for the second-network backwater is arranged on the second-network backwater pipe, and two ends of the two-network distributed circulating pump are communicated with the second-network backwater pipe; the side of the water collector, which is far away from the secondary net water return pipe, is communicated with a plate type heat exchanger, and a dirt remover is communicated between the water collector and the plate type heat exchanger; one side of the plate heat exchanger is communicated with a first-level network water supply pipe, the other side of the plate heat exchanger is communicated with a second-level network water supply pipe, the plate heat exchanger is connected with a water separator through the second-level network water supply pipe, and the side wall of the water separator is communicated with a plurality of water supply branch pipes communicated with a user end. This application has the effect of the initiative in order to promote hydraulic balance adjustment.

Description

Time-sharing zone-control two-network distributed variable-frequency energy-saving heating system

Technical Field

The application relates to the field of heating systems, in particular to a time-division and zone-control two-network distributed variable-frequency energy-saving heating system.

Background

In cold regions, heating systems are installed in residential houses, classrooms, office buildings and other buildings.

The prior art can refer to the Chinese utility model with the publication number of CN2816635Y, the boiler energy-saving heat supply system comprises a burner, a boiler, an electric control cabinet and a hot water circulation pipeline system, and further comprises a controller, an outdoor temperature sensor, a total water outlet temperature sensor, a total water return temperature sensor, a secondary water outlet temperature sensor and a secondary water return temperature sensor, wherein a primary bypass is arranged on a primary heat supply loop, an electric three-way valve is arranged at the intersection point of a primary water supply pipe and the primary bypass, an electric two-way valve is arranged on a boiler water outlet pipe or a boiler water return pipe, which is connected with a water outlet main pipe or a water return main pipe, of the boiler, and the controller is respectively connected with the electric control cabinet, the outdoor temperature sensor, the total water outlet temperature sensor, the total water return temperature sensor, the secondary water outlet temperature sensor, the secondary water.

Aiming at the related technologies, the inventor thinks that the water supply and return processes adopt valve control, so that the hydraulic balance adjustment process is relatively passive; meanwhile, for a system with multiple branches of the two networks, the valve control and adjustment precision is insufficient, the hydraulic imbalance phenomenon is serious, and the control process is useless and energy consumption is serious.

SUMMERY OF THE UTILITY MODEL

In order to improve the initiative and the economical efficiency of hydraulic balance adjustment, the application provides a two-network distributed variable-frequency energy-saving heating system with time-division zone control.

The application provides a time-sharing zone control's two net distributing type frequency conversion energy-saving heating system adopts following technical scheme:

a time-sharing zone-control two-network distributed variable-frequency energy-saving heating system comprises a water collector and a secondary network water return pipe communicated with the water collector, wherein the secondary network water return pipe is communicated with a user end at one end far away from the water collector; the secondary net water return pipe is provided with a secondary net distributed circulating pump used for providing power for secondary net water return, and two ends of the secondary net distributed circulating pump are communicated with the secondary net water return pipe; the side of the water collector, which is far away from the secondary net water return pipe, is communicated with a plate type heat exchanger, and a dirt remover is communicated between the water collector and the plate type heat exchanger; one side of the plate heat exchanger is communicated with a first-level network water supply pipe, the other side of the plate heat exchanger is communicated with a second-level network water supply pipe, the plate heat exchanger is connected with a water separator through the second-level network water supply pipe, and the side wall of the water separator is communicated with a plurality of water supply branch pipes communicated with a user end.

By adopting the technical scheme, the frequency conversion control of each two-network distributed circulating pump is realized through the matched automatic control system, the aim of time-sharing and zone-dividing control of each branch is achieved through the setting of the parameters of the automatic control platform, the hydraulic balance degree of the multi-branch heating system can be improved, and the aims of energy conservation and consumption reduction are achieved.

Preferably, the diameter of the water collector tank body is larger than the maximum diameter of the secondary net water return pipe by 3 times.

By adopting the technical scheme, the water collector eliminates the coupling influence among the two-network distributed circulating pumps, improves the efficiency of the water pump and saves the running power consumption of water pump equipment.

Preferably, the water pump sunction inlet department of two net distributed circulation pumps is equipped with the moisturizing point, the moisturizing point includes the moisturizing water tank, with the moisturizing water tank intercommunication the moisturizing pump and with moisturizing pump intercommunication moisturizing pipe, the moisturizing pipe communicates with the water pump sunction inlet of two net distributed circulation pumps.

By adopting the technical scheme, the low-temperature water is supplemented to the water collector from the water supplementing water tank through the water supplementing pump, so that the consumption in the water circulation process is compensated, and the water quantity in the water collector is ensured to be sufficient; and the water replenishing point is arranged at a water pump suction inlet of the two-network distributed circulating pump so as to reduce the pressure of water replenishing.

Preferably, the number of the water replenishing points is at least 2, and the water replenishing points are arranged at water pump suction inlets of the two-network distributed circulating pump.

Through adopting above-mentioned technical scheme, carry out the moisturizing through 2 moisturizing points, can promote moisturizing efficiency, reduce moisturizing pressure, guarantee the operation of water charging system safety and stability.

Preferably, the second-level network water return pipes are arranged to be multiple and distributed on one side of the water collector, the number of the second-level network water return pipes corresponds to and equals to the number of the water supply branch pipes, and the two-level network distributed circulation pumps are arranged to be multiple groups and are sequentially connected with the multiple second-level network water return pipes correspondingly.

By adopting the technical scheme, the two networks are controlled by the branch distributed circulating pumps, so that the consumption of the capital pressure head in the valve control process can be saved, and the power consumption is greatly reduced.

Drawings

Fig. 1 is an overall system diagram of the present application.

Description of reference numerals: 1. a water collector; 2. a two-network distributed circulating pump; 3. a water separator; 4. a plate heat exchanger; 5. a water replenishing tank; 6. a dirt separator; 7. a water replenishing pump; 8. a secondary net water return pipe; 9. a water supply branch pipe; 10. a water replenishing pipe; 12. A secondary net water supply pipe; 13. a primary net water supply pipe.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a time-sharing zone-control two-network distributed variable-frequency energy-saving heating system. Referring to fig. 1, the system comprises a water collector 1, wherein one side of the water collector 1 is provided with a plurality of secondary net water return pipes 8, and one ends of the secondary net water return pipes 8, which are close to the water collector 1, are communicated with the water collector 1 and are arranged at one side of the water collector 1; and one ends of the secondary network water return pipes 8 far away from the water collector 1 are communicated with the residential area for use. Water collector 1 can realize the collection to the low-temperature water of residential district through second grade net wet return 8, and can promote the efficiency of return water under many second grade net wet return 8's combined action, and the guarantee water collector 1 interior low temperature water is sufficient.

Referring to fig. 1, each secondary-network water return pipe 8 is connected with a two-network distributed circulation pump 2, and each two-network distributed circulation pump 2 is arranged at one end of the secondary-network water return pipe 8 close to a water collector 1; the original valve control water return mode is changed into a pump control water return mode under the action of the two-network distributed circulating pump 2, so that the initiative of hydraulic balance adjustment is improved; and the return water is controlled by the two-network distributed circulating pump 2, so that zero throttling can be realized, and the electricity saving maximization is achieved.

Referring to fig. 1, a water return header pipe is arranged on one side, away from a secondary network water return pipe 8, of a water collector 1, the water return header pipe is communicated with a dirt separator 6, a plate heat exchanger 4 is communicated on one side, away from the secondary network water return pipe 8, of the water collector 1, the water return header pipe enters the plate heat exchanger 4 after passing through the dirt separator 6, and a primary network water supply pipe 13 is communicated on one side of the plate heat exchanger 4. The low-temperature water is conveyed into the plate heat exchanger 4 through the secondary water return main pipe, and the low-temperature water is converted into high-temperature water through the heat transfer function of the plate heat exchanger 4.

Referring to fig. 1, the other side of the plate heat exchanger 4 is communicated with a secondary network water supply pipe 12, and the plate heat exchanger 4 is connected with a water separator 3 through the secondary network water supply pipe 12; the low-temperature water is converted into high-temperature water in the plate heat exchanger 4 and then enters the water separator 3, and the water separator 3 is provided with corresponding water supply branch pipes 9 corresponding to a plurality of secondary network water return pipes 8 of the water collector 1; the number of the water supply branch pipes 9 is equal to the number of the second-level network water return pipes 8 correspondingly. A plurality of water supply branch pipes 9 are communicated with the water separator 3 at one end close to the water separator 3 and are arranged at one side of the water separator 3; the ends of the branch water supply pipes 9 far away from the water separator 3 are communicated with the residential area for use. The high-temperature water in the water separator 3 is branched to the residential area for use by the branched water supply pipe 9.

Referring to fig. 1, a water replenishing tank 5 is arranged in the heat exchange station, one side of the water replenishing tank 5 is communicated with a water replenishing pipe 10 communicated with a secondary network water return pipe 8, and a connection point of the water replenishing pipe 10 and the secondary network water return pipe 8 is farther away from a water collector 1 than a connection point of a secondary network distributed circulation pump 2 and the secondary network water return pipe 8. Low-temperature water is supplemented to the water collector 1 through the water supplementing tank 5, so that loss in the water circulation process is compensated, and the water quantity in the water collector 1 is ensured to be sufficient; and the water replenishing point is arranged on one side of the water collector 1 close to the secondary net water return pipe 8 so as to reduce the pressure of water replenishing.

Referring to fig. 1, a water replenishing pump 7 is arranged on a water replenishing pipe 10, and the water replenishing pipe 10 completes water replenishing and constant pressure of the system through a water replenishing point under the action of the water replenishing pump 7; the number of the water replenishing points is more than 2, so that the water replenishing system can operate safely and stably.

The implementation principle of the two-network distributed variable-frequency energy-saving heating system controlled in a time-sharing and zone-dividing mode in the embodiment of the application is as follows: the water collector 1 controls the return water of the low-temperature water used in the residential area through the two-network distributed circulating pump 2, and then the low-temperature water is converted into high-temperature water under the heat energy transfer effect of the plate heat exchanger 4 and is transmitted into the water distributor 3, and finally the water can be supplied to the residential area through the plurality of water supply branch pipes 9.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a time sharing zone control's two net distributing type frequency conversion energy-saving heating system which characterized in that: the water collector comprises a water collector (1) and a secondary network water return pipe (8) communicated with the water collector (1), wherein the secondary network water return pipe (8) is communicated with a user end at one end far away from the water collector (1); a two-network distributed circulating pump (2) used for providing power for the second-network backwater is arranged on the second-network backwater pipe (8), and two ends of the two-network distributed circulating pump (2) are communicated with the second-network backwater pipe (8); the side, far away from the secondary-network water return pipe (8), of the water collector (1) is communicated with a plate type heat exchanger (4), and a dirt remover (6) is communicated between the water collector (1) and the plate type heat exchanger (4); one side of the plate heat exchanger (4) is communicated with a first-level network water supply pipe (13), the other side of the plate heat exchanger (4) is communicated with a second-level network water supply pipe (12), the plate heat exchanger (4) is connected with a water distributor (3) through the second-level network water supply pipe (12), and the side wall of the water distributor (3) is communicated with a plurality of water supply branch pipes (9) communicated with a user end.

2. The time-division zone-control two-network distributed variable-frequency energy-saving heating system according to claim 1, characterized in that: the diameter of the water collector (1) tank body is larger than the maximum diameter of the secondary net water return pipe (8) by 3 times.

3. The time-division zone-control two-network distributed variable-frequency energy-saving heating system according to claim 1, characterized in that: the water pump sunction inlet department of two net distributed circulating pumps (2) is equipped with the moisturizing point, the moisturizing point includes moisturizing water tank (5), moisturizing pump (7) and moisturizing pump (7) intercommunication moisturizing pipe (10) with moisturizing water tank (5) intercommunication, moisturizing pipe (10) and the water pump sunction inlet intercommunication of two net distributed circulating pumps (2).

4. The time-division zone-control two-network distributed variable-frequency energy-saving heating system according to claim 3, characterized in that: the number of the water replenishing points is at least set to 2, and the water replenishing points are arranged at the positions of water pump suction inlets of the two-network distributed circulating pumps (2).

5. The time-division zone-control two-network distributed variable-frequency energy-saving heating system according to claim 3, characterized in that: two-level network wet return (8) are established to many and are distributed in one side of water collector (1), the quantity of two-level network wet return (8) corresponds and equals with the quantity of water supply lateral pipe (9), two-level network distributed circulation pump (2) are established to the multiunit and correspond the connection in proper order with many two-level network wet return (8).