CN209744492U

CN209744492U - Geothermal gradient utilization heating system

Info

Publication number: CN209744492U
Application number: CN201920254952.4U
Authority: CN
Inventors: 常俊峰; 张芬; 潘妮
Original assignee: Shanxi Shuangliang New Energy Thermal Power Engineering Design Co Ltd
Current assignee: Shanxi transformation comprehensive reform demonstration zone heating Co., Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-06
Anticipated expiration: 2029-02-28

Abstract

the utility model discloses a geothermal step utilizes heating system, its characterized in that: the system mainly comprises a geothermal well unit, a primary unit, a first heat pump unit, a secondary unit, a second heat pump unit, a thermometer, a pressure gauge, an electric control valve, a circulating pump and a PLC (programmable logic controller). This heating system can accurate control heat pump evaporation side's temperature of water and flow to reduce the power consumption of raising the temperature in-process circulating pump at geothermal water step, through the middle temperature degree of accurate control, can improve heat pump energy efficiency ratio.

Description

geothermal gradient utilization heating system

Technical Field

The utility model relates to a geothermal energy utilizes heating system of technical field, concretely relates to geothermal step utilizes heating system.

Background

In the current society, the problems of resource shortage and environmental pollution are increasingly serious, geothermal resources are used as clean renewable energy sources, the development of the geothermal resources has certain prospects and advantages, and the technology applied to geothermal heat supply is mature day by day. However, as the energy saving work is deepened continuously, people have more and more recognized the problem of heat supply and energy saving, and more importantly, the matching of energy and quality is achieved, so that the research on the operation strategy of a heat supply system is very important, and the utilization rate of geothermal water is effectively improved by combining geothermal water with the heat source form of the step utilization of the water source heat pump. Therefore, a method for analyzing an application model of a geothermal gradient utilization heating system, seeking an optimal matching form and an operation strategy of energy utilization, further excavating energy-saving potential of the heating system and efficiently utilizing geothermal resources becomes a problem to be researched urgently.

The main components of the geothermal gradient utilization system are a plate heat exchanger, a water source heat pump unit, a tail end indoor heating system and a transmission and distribution system. In the heat supply operation process, the influence of outdoor meteorological parameter change on heat supply load is combined, the whole system equipment is analyzed according to direct heat exchange of an outdoor temperature reduction plate, temperature rise of a heat pump unit and gradual starting of a peak regulation heat source, and the designed heat supply amount is achieved. In the process, extensive management causes problems of large flow rate of the middle water side or overhigh water temperature, shutdown protection of the heat pump and the like, and the invalid power consumption is large. The utility model aims at establishing a system, can match optimum middle temperature degree and flow according to the system heat supply load to improve geothermal water's utilization ratio, reduce system's operation energy consumption and expense.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model aims at providing a geothermal step utilizes heating system.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a geothermal gradient utilization heat supply system mainly comprises a geothermal well unit, a first-stage unit, a second-stage unit, a thermometer, a pressure gauge, an electric control valve, a circulating pump and a PLC (programmable logic controller).

A water suction pump is arranged in the geothermal well unit, a water outlet of the water suction pump is connected with a heat source inlet of a first-stage plate heat exchanger in the first-stage unit, a heat source outlet of the first-stage plate heat exchanger is connected with a heat source inlet of a second-stage plate heat exchanger in the second-stage unit, a heat source outlet of the second-stage plate heat exchanger is connected with the geothermal well unit, a circulating pump is further arranged between the heat source outlet of the second-stage plate heat exchanger and the geothermal well unit, a cold source inlet of the first-stage plate heat exchanger is connected with a two-network water return pipeline, a cold source outlet of the first-stage plate heat exchanger is connected with a two-network water supply pipeline, a cold source outlet of the second-stage plate heat exchanger is connected with an evaporator inlet of the first heat pump unit and an evaporator inlet of the second heat pump unit, and a cold source inlet of the second-stage plate heat exchanger, heat pump set's condenser export and heat pump set's condenser export all with two net water supply pipe connection, heat pump set's condenser import and heat pump set's condenser import all with one-level plate heat exchanger's cold source access connection, geothermal water side one-level plate heat exchanger with second grade plate heat exchanger department all is equipped with thermometer, manometer and electric control valve, heat pump set with heat pump set department also is equipped with thermometer, manometer, electric control valve and circulating pump, thermometer, manometer, electric control valve and circulating pump all with PLC controller electric connection.

Furthermore, a rotational flow sand remover is arranged between the geothermal well unit and the primary unit and between the geothermal well unit and the secondary unit;

further, a disc filter is arranged between a heat source outlet of the secondary plate heat exchanger in the secondary unit and the circulating pump;

Furthermore, a peak shaving boiler is also arranged in the system.

the utility model has the advantages that:

The utility model provides a pair of geothermal step utilizes heating system can the water temperature and the flow of accurate control heat pump evaporation side to reduce and carry the power consumption of temperature in-process circulating pump at geothermal water step, through temperature degree in the middle of the accurate control, can improve heat pump energy efficiency ratio.

Drawings

Fig. 1 is a flow chart of the present invention.

In the figure: the system comprises a geothermal well unit 1, a rotational flow sand remover 2, a first-stage unit 3, a first-stage plate heat exchanger 4, a first-stage heat pump unit 5, a second-stage unit 6, a second-stage plate heat exchanger 7, a second-stage heat pump unit 8, a disc filter 9 and a peak regulation boiler 10.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The following embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Use the utility model discloses a think about right the utility model discloses the simple change that goes on is all in the utility model discloses the within range that claims.

Referring to fig. 1, a geothermal gradient utilization heating system mainly comprises a geothermal well unit 1, a primary unit 3, a primary heat pump unit 5, a secondary unit 6, a secondary heat pump unit 8, a thermometer, a pressure gauge, an electric control valve, a circulating pump and a PLC controller.

Be equipped with the suction pump in the geothermal well unit 1, the delivery port of suction pump with the heat source access connection of one-level plate heat exchanger 4 in the one-level unit 3, the heat source export of one-level plate heat exchanger 4 with the heat source access connection of second grade plate heat exchanger 7 in the second grade unit 6, the heat source export of second grade plate heat exchanger 7 with geothermal well unit 1 is connected, the heat source export of second grade plate heat exchanger 7 with still should be equipped with the circulating pump between geothermal well unit 1, the cold source import and the two nets return water pipe coupling of one-level plate heat exchanger 4, the cold source export and the two nets water supply pipe coupling of one-level plate heat exchanger 4, the cold source export of second grade plate heat exchanger 7 with the evaporimeter import of heat pump set 5 and the evaporimeter access connection of heat pump set 8 No. two, the cold source import of second grade plate heat exchanger 7 with the evaporimeter export of heat pump set 5 and No. two heat pipe couplings The evaporimeter exit linkage of pump set 8, the condenser export of heat pump set 5 and the condenser export of heat pump set 8 all is connected with two net water supply pipe, the condenser import of heat pump set 5 and the condenser import of heat pump set 8 all with the cold source access connection of one-level plate heat exchanger 4, geothermal water side one-level plate heat exchanger 4 with 7 departments of second grade plate heat exchanger all are equipped with thermometer, manometer and electric control valve, heat pump set 5 with heat pump set 8 departments also are equipped with thermometer, manometer, electric control valve and circulating pump, thermometer, manometer, electric control valve and circulating pump all with PLC controller electric connection.

Preferably, a cyclone sand remover 2 is arranged between the geothermal well unit 1 and the primary unit 3 and between the geothermal well unit and the secondary unit 6;

Preferably, a disc filter 9 is further arranged between a heat source outlet of the secondary plate heat exchanger 7 in the secondary unit 6 and the circulating pump;

Preferably, a peak shaver boiler 10 is also provided in the system.

The utility model has the advantages that:

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. the utility model provides a geothermal gradient utilizes heating system which characterized in that: the system mainly comprises a geothermal well unit, a primary unit, a first heat pump unit, a secondary unit, a second heat pump unit, a thermometer, a pressure gauge, an electric control valve, a circulating pump and a PLC (programmable logic controller);

2. A geothermal cascade heating system as defined in claim 1, wherein: and a rotational flow sand remover is arranged between the geothermal well unit and the first-stage unit and between the geothermal well unit and the second-stage unit.

3. a geothermal cascade heating system as defined in claim 1, wherein: and a disc filter is also arranged between a heat source outlet of the second-stage plate heat exchanger in the second-stage unit and the circulating pump.

4. A geothermal cascade heating system as defined in claim 1, wherein: the system is also provided with a peak shaving boiler.