CN211119598U

CN211119598U - Distributed circulating pump for heat supply

Info

Publication number: CN211119598U
Application number: CN201921482560.XU
Authority: CN
Inventors: 张建兴; 张国玉; 张晓宇; 张宁; 张丽; 王莹
Original assignee: Hebei Haotian Thermal Development Co ltd
Current assignee: Hebei Haotian Thermal Development Co ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2020-07-28
Anticipated expiration: 2029-09-07

Abstract

The utility model discloses a distributed circulating pump is used in heat supply, including the thermal power plant, heat exchanger and heat supply pipe, steam turbine in the thermal power plant is through a delivery pipe and a wet return and heat exchanger circulation intercommunication, the top of heat exchanger is connected with the secondary delivery pipe, the bottom of heat exchanger is connected with the secondary wet return, erection joint has a plurality of heat supply pipes between the end of secondary delivery pipe and secondary wet return, and the heat exchanger, the secondary delivery pipe, the heat supply pipe, form circulation heating return circuit between the secondary wet return, install the heat source circulating pump on the secondary delivery pipe, valve and hot user circulating pump are all installed to the water inlet department of a plurality of heat supply pipes. The utility model discloses a set up the heat consumer circulating pump, assisted the heat source transport function who has undertaken the heat supply network circulating pump to make the heat supply network circulating pump can lower power operation, practiced thrift the electric energy, the convenient power regulation through the pump simultaneously adjusts the corresponding heat supply pipe in the heat source velocity of flow, adjusts heating efficiency and heating temperature.

Description

Distributed circulating pump for heat supply

Technical Field

The utility model relates to a circulating pump is used in the heat supply, especially relates to a distributed circulating pump is used in heat supply.

Background

The thermal power plant is a thermal power plant which utilizes the extraction steam or the exhaust steam of a steam turbine to supply heat for users while generating electricity. The main working principle is that hot water generated after power generation of a thermal power plant is utilized and is heated again for heating. Hot water (or steam) discharged by the thermal power plant enters the heat exchanger from the primary side inlet of the unit for heat exchange, flows out from the primary side outlet of the port and then flows back into the thermal power plant; the secondary side water outlet is communicated with the heat supply conduit to supply heat for users, and cooling water returns to the heat exchanger for heating through secondary side backwater after heating and is circulated and reciprocated. When present thermal power plant heats, carry out the heat source circulation by the heat source circulating pump on the secondary delivery pipe is unified, therefore the great operating power need be maintained throughout to the circulating pump to guarantee hot water circulation efficiency and user heating, thereby increased the power consumption of circulating pump, caused the waste of electric energy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the prior art, the utility model provides a distributed circulating pump is used in heat supply sets up hot user's circulating pump, not only has the superiority of economize on electricity, and is also more economical moreover.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a distributed circulating pump is used in heat supply, includes thermal power plant, heat exchanger and heat supply pipe, steam turbine in the thermal power plant is through a delivery pipe and a wet return and heat exchanger circulation intercommunication, the top of heat exchanger is connected with the secondary delivery pipe, the bottom of heat exchanger is connected with the secondary wet return, a plurality of heat supply pipes of erection joint between the end of secondary delivery pipe and secondary wet return, just form circulation heating return circuit between heat exchanger, secondary delivery pipe, heat supply pipe, the secondary wet return, install the heat source circulating pump on the secondary delivery pipe, it is a plurality of valve and hot user's circulating pump are all installed to the water inlet department of heat supply pipe.

As an optimal technical scheme of the utility model, there is the moisturizing case through pipe connection on the secondary wet return, install the moisturizing pump on the pipe.

As an optimized technical scheme of the utility model, all install temperature sensor, water pressure sensor and flow sensor on delivery pipe, wet return, secondary delivery pipe and the secondary wet return.

As an optimized technical proposal of the utility model, the water outlet of the heat supply conduit is provided with a check valve.

As an optimized technical scheme of the utility model, the delivery port slope of heat supply pipe sets up, and the inclination direction is unanimous with circulation heating return circuit heat source flow direction.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

the utility model discloses all install hot user circulating pump on every indoor heat supply pipe, the user can open the circulating pump in the house when needs heating, drive heat source circulation heating, not the time spent close, through setting up hot user circulating pump, the supplementary heat source transport function who has undertaken the heat supply network circulating pump, thereby make the heat supply network circulating pump can lower power operation, the electric energy has been practiced thrift, simultaneously through the hot user circulating pump that sets up, the convenient power regulation through the pump adjusts the heat source velocity of flow in the corresponding heat supply pipe, adjust heating efficiency and heating temperature.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

wherein: 1. a thermal power plant; 2. a primary water supply pipe; 3. a primary water return pipe; 4. a heat exchanger; 5. a secondary water supply pipe; 6. a secondary water return pipe; 7. a heat source circulating pump; 8. a hot user circulation pump; 9. a heat supply conduit; 10. a valve; 11. a water replenishing tank; 12. a water replenishing pump; 13. a one-way valve.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1, a distributed circulation pump for heat supply includes a thermal power plant 1, a heat exchanger 4 and a heat supply conduit 9, a steam turbine in the thermal power plant 1 is circularly communicated with the heat exchanger 4 through a primary water supply pipe 2 and a primary water return pipe 3, the top end of the heat exchanger 4 is connected with a secondary water supply pipe 5, the bottom end of the heat exchanger 4 is connected with a secondary water return pipe 6, a plurality of heat supply conduits 9 are installed between the ends of the secondary water supply pipe 5 and the secondary water return pipe 6, and the heat exchanger 4, the secondary water supply pipe 5, the heat supply conduit 9 and the secondary water return pipe 6 form a circulating heating loop therebetween, the secondary water supply pipe 5 is provided with a heat source circulation pump 7, and a valve 10 and a heat user circulation.

Wherein, there is water replenishing tank 11 through pipe connection on the secondary wet return 6, installs water replenishing pump 12 on the pipe, and hot water may produce certain loss because of factors such as evaporation, seepage in the circulation heating, can in time replenish water through water replenishing tank 11.

Wherein, all install temperature sensor, water pressure sensor and flow sensor on primary water supply pipe 2, primary wet return 3, secondary water supply pipe 5 and the secondary wet return 6, can monitor the temperature, water pressure and the flow in the pipe.

Wherein, the water outlet of the heat supply conduit 9 is provided with a one-way valve 13 to prevent the water in the circulating heating loop from flowing back to the heat supply conduit 9.

The water outlet of the heat supply conduit 9 is obliquely arranged, and the inclined direction is consistent with the heat source flowing direction of the circulating heating loop, so that the water outlet direction of the heat supply conduit 9 is consistent with the water flow direction in the loop as much as possible, and the water outlet of the heat supply conduit 9 is convenient to converge.

Specifically, when the device is used, the heat source circulating pump 7 is opened at a low power to maintain the basic circulation of the heat source in the circulation heating loop, but when a user needs to heat, the heat user circulating pump 8 and the valve 10 on the home heat supply conduit 9 are opened to communicate the home heat supply conduit 9 with the circulation heating loop, and the heat user circulating pump 8 drives the water source in the heat supply conduit 9 to circulate so as to heat. Meanwhile, the heat user circulating pump 8 participates in the whole loop of the circulating heating loop, and assists in bearing the heat source conveying function of the heat source circulating pump 7.

The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.

Claims

1. A distributed circulating pump for heat supply comprises a thermal power plant (1), a heat exchanger (4) and a heat supply conduit (9), it is characterized in that a steam turbine in the thermal power plant (1) is circularly communicated with a heat exchanger (4) through a primary water supply pipe (2) and a primary water return pipe (3), the top end of the heat exchanger (4) is connected with a secondary water supply pipe (5), the bottom end of the heat exchanger (4) is connected with a secondary water return pipe (6), a plurality of heat supply conduits (9) are arranged and connected between the secondary water supply pipe (5) and the tail end of the secondary water return pipe (6), and a circulating heating loop is formed among the heat exchanger (4), the secondary water supply pipe (5), the heat supply conduit (9) and the secondary water return pipe (6), and a heat source circulating pump (7) is installed on the secondary water supply pipe (5), and a valve (10) and a heat user circulating pump (8) are installed at the water inlet of each of the heat supply guide pipes (9).

2. A distributed circulation pump for heating according to claim 1, wherein the secondary water return pipe (6) is connected with a water replenishing tank (11) through a pipe, and a water replenishing pump (12) is installed on the pipe.

3. A distributed circulation pump for heating according to claim 1, wherein a water temperature sensor, a water pressure sensor and a flow sensor are installed on the primary water supply pipe (2), the primary water return pipe (3), the secondary water supply pipe (5) and the secondary water return pipe (6).

4. A distributed circulation pump for heating according to claim 1, wherein a one-way valve (13) is installed at the outlet of the heating conduit (9).

5. A distributed circulation pump for heating applications according to claim 1, wherein the outlet of said heating conduit (9) is inclined and oriented in the same direction as the heat source of the hydronic heating circuit.