CN208139393U - Based on the absorption first-level pipeline network great temperature difference heat supply system with the heat exchange of electric compression - Google Patents

Abstract

A kind of first-level pipeline network great temperature difference heat supply system based on the heat exchange of absorption and electric compression, including first-level pipeline network water supplying pipe and first-level pipeline network return pipe, the first-level pipeline network water supplying pipe, absorption lithium bromide hot-water driven heat pump, low temperature electric compression type heat pump, backwater pressure pump, first-level pipeline network return pipe are sequentially communicated to form first circulation circuit；After the secondary network circulating pump is connected to low temperature electric compression type heat pump, absorption lithium bromide hot-water driven heat pump, then with secondary network water supplying pipe, newly-increased thermal substation, secondary network return pipe form second circulation circuit.The utility model has the advantages that：System and device configuration are simple, stable and reliable operation, first-level pipeline network return water low temperature exhaust heat energy can sufficiently be recycled and reliably reduce first-level pipeline network return water temperature to 20 DEG C, industrial exhaust heat or residual heat of electric power plant low-temperature zone waste heat recycling ability can be significantly increased, the level-density parameter for realizing first-level pipeline network return water heating agent and low-temperature zone waste heat, improves the comprehensive utilization ratio of the energy.

Description

Based on the absorption first-level pipeline network great temperature difference heat supply system with the heat exchange of electric compression

Technical field

The utility model relates to a kind of based on the absorption first-level pipeline network great temperature difference heat supply system with the heat exchange of electric compression.

Background technique

In recent years, the more provinces and cities' weight haze weather in the north are attacked repeatedly, cause the concern of the whole people and are discussed warmly.December 21 in 2016 Day, habit chairman is explicitly indicated in the 14th meeting of central finance and economics leading group will promote north cleaning heating, it is desirable that preferably gas Then gas, preferably electricity then electricity, as far as possible using clean energy resource, accelerate improve cleaning heating specific gravity.Industrial exhaust heat（Containing residual heat of electric power plant）It returns It receives in such a way that heating refers to that the waste heat for generating industrial process is recycled as heating reservoir again, is cleaning heating Prior development direction.Currently with industrial exhaust heat and residual heat of electric power plant heating mainly based on Urban District Heating, more than industry Heat heating municipal level pipe network supplies water, is sent again to urban thermal consumer substation user cooling, by first-level pipeline network return water returns to waste heat heat source Place forms circulation.In order to reduce first-level pipeline network return water temperature, increase industrial exhaust heat and residual heat of electric power plant low temperature as far as possible（Or low product Position）The utilization rate of section, at present first-level pipeline network system mostly use first-level pipeline network great temperature difference heat supply system based on absorption heat exchange and The end heat station system of gas complementary combustion absorption heat pump is set, and which configures that system complex, construction investment be big, operating cost Height, and the practical cooling extent of first-level pipeline network return water is small, industrial exhaust heat and residual heat of electric power plant low temperature（Or it is low-grade）The utilization rate of section It is not high.

Summary of the invention

The utility model provides a kind of first-level pipeline network great temperature difference heat supply system based on the heat exchange of absorption and electric compression, with Solve that configuration system complex of the existing technology, construction investment is big, operating cost is high, and the practical cooling of first-level pipeline network return water Amplitude is small, the not high problem of the utilization rate of industrial exhaust heat and residual heat of electric power plant low-temperature zone.

The technical solution of the utility model is：It is a kind of to be supplied based on the absorption big temperature difference of first-level pipeline network with the heat exchange of electric compression Hot systems, including first-level pipeline network water supplying pipe, first-level pipeline network return pipe and heat-exchange system, the first-level pipeline network water supplying pipe and first-level pipeline network Return pipe is secondary network heat supply by heat-exchange system, which is characterized in that the heat-exchange system includes：Absorption lithium bromide heat Water drive ejector half heat pump, low temperature electric compression type heat pump and backwater pressure pump, the first of absorption lithium bromide hot-water driven heat pump Import is connect with first-level pipeline network water supplying pipe, the first outlet and low temperature electric compressor of the absorption lithium bromide hot-water driven heat pump First import of formula heat pump connects, and the first outlet of the low temperature electric compression type heat pump is returned by backwater pressure pump and first-level pipeline network Water pipe connection；Input interface of second import of the low temperature electric compression type heat pump as the outlet connection with secondary network, should The second outlet of low temperature electric compression type heat pump is connect with the second import of absorption lithium bromide hot-water driven heat pump, the absorption The output interface that the second outlet of formula lithium bromide hot-water driven heat pump is connect as the entrance with secondary network.

The utility model has the advantages that：Based on the absorption heat exchange mode of combining with electric compression, system and device configuration Simply, stable and reliable operation, the conventional system for changing status use is complicated, construction investment is big, operating cost is high and effect not Obvious disadvantage.First-level pipeline network return water low temperature exhaust heat energy can be sufficiently recycled by this system and reliably reduces first-level pipeline network return water Industrial exhaust heat or residual heat of electric power plant low temperature can be significantly increased to 20 DEG C in temperature（Or it is low-grade）Duan Yure recycles ability, realizes level-one The level-density parameter of pipe network return water heating agent and low-temperature zone waste heat improves the comprehensive utilization ratio of the energy, brings great economic benefit；Together When, first-level pipeline network return water temperature reduces, and has widened confession/backwater temperature difference, and pipe network feed flow reduces, and can save pipeline network construction throwing Money, the operation power consumption for reducing the heat supply network circulatory system.

Detailed description of the invention

Fig. 1 is that the overall of the utility model constitutes schematic diagram.

Specific embodiment

Further describe the utility model combined with specific embodiments below, the advantages of the utility model and feature will be with Description and it is apparent.But examples are merely exemplary for these, does not constitute any restrictions to the scope of the utility model. It will be understood by those skilled in the art that can be to the utility model skill under the spirit and scope without departing from the utility model The details and form of art scheme are modified or are replaced, but these modifications and replacement each fall within the protection scope of the utility model It is interior.

Referring to Fig. 1, the utility model is a kind of based on the absorption first-level pipeline network great temperature difference heat supply system with the heat exchange of electric compression System, including first-level pipeline network water supplying pipe 1, first-level pipeline network return pipe 2 and heat-exchange system, the first-level pipeline network water supplying pipe 1 and first-level pipeline network Return pipe 2 is secondary network heat supply by heat-exchange system, which is characterized in that the heat-exchange system includes：Absorption lithium bromide Hot-water driven（It is a kind of）Heat pump 3, low temperature electric compression type heat pump 4 and backwater pressure pump 5, absorption lithium bromide hot-water driven First import a1 of heat pump 3 is connect with first-level pipeline network water supplying pipe 1, and the first of the absorption lithium bromide hot-water driven heat pump 3 goes out Mouth a2 is connect with the first import b1 of low temperature electric compression type heat pump 4, and the first outlet b2 of the low temperature electric compression type heat pump 4 is logical Backwater pressure pump 5 is crossed to connect with first-level pipeline network return pipe 2；Second import b3 of the low temperature electric compression type heat pump 4 is as with two The input interface 10 of the outlet connection of grade pipe network, the second outlet b4 and absorption lithium bromide of the low temperature electric compression type heat pump 4 Second import a3 connection of hot-water driven heat pump 3, the second outlet a4 conduct of the absorption lithium bromide hot-water driven heat pump 3 The output interface 11 being connect with the entrance of secondary network.

The utility model in use, be inputted interface 10 and output interface 11 respectively with the outlet of secondary network H and Entrance connection.Secondary network H in figure includes the multiple thermal substations 9 connected by secondary network water supplying pipe 7 and secondary network circulation Pump 6.Thermal substation 9 therein includes newly-increased thermal substation.

The working principle of the utility model is：120 DEG C from first-level pipeline network water supplying pipe 1 water supply, by A sections of water supplying pipes into The the first import a1 for entering absorption lithium bromide hot-water driven heat pump 3, as being cooled to 75 DEG C after high temperature driven heat source heat release（B Section communicating pipe）, flowed out after being re-used as low temperature exhaust heat heat source heat release from first outlet a2, into C sections of water supplying pipe, temperature is reduced to 40 DEG C, which enters the first import b1 of low temperature electric compression type heat pump 4, goes out after 41 heat release of evaporator from first Mouth b2 outflow, into D sections of return pipe, temperature is reduced to 20 DEG C, then returns to first-level pipeline network return water after pressurizeing by backwater pressure pump 5 Pipe 2；After the water supplying pipe 7 of secondary network H passes through 9 heat supply of thermal substation, flows out from the return pipe 8 of secondary network and followed through secondary network The input interface 10 of the utility model is returned to after 6 pressurization of ring pump, temperature falls to 50 DEG C（E sections of water supplying pipes）, 50 DEG C of the return water Into 4 second import b3 of low temperature electric compression type heat pump, 56 DEG C are risen to after the heating of condenser 42, using F sections of return water Pipe is sent into the second import a3 of absorption lithium bromide hot-water driven heat pump 3, is flowed out from second outlet a4, and temperature rises to 80 DEG C （G sections of water supplying pipes）, connect the output interface 11 of the utility model.

Claims (1)

1. a kind of based on the absorption first-level pipeline network great temperature difference heat supply system with the heat exchange of electric compression, including first-level pipeline network water supplying pipe （1）, first-level pipeline network return pipe（2）And heat-exchange system, the first-level pipeline network water supplying pipe（1）With first-level pipeline network return pipe（2）By changing Hot systems are secondary network heat supply, which is characterized in that the heat-exchange system includes：Absorption lithium bromide hot-water driven heat pump （3）, low temperature electric compression type heat pump（4）And backwater pressure pump（5）, absorption lithium bromide hot-water driven heat pump（3）First Import（a1）With first-level pipeline network water supplying pipe（1）Connection, the absorption lithium bromide hot-water driven heat pump（3）First outlet（a2） With low temperature electric compression type heat pump（4）The first import（b1）Connection, the low temperature electric compression type heat pump（4）First outlet （b2）Pass through backwater pressure pump（5）With first-level pipeline network return pipe（2）Connection；The low temperature electric compression type heat pump（4）Second into Mouthful（b3）Input interface as the outlet connection with secondary network（10）, the low temperature electric compression type heat pump（4）Second go out Mouthful（b4）With absorption lithium bromide hot-water driven heat pump（3）The second import（a3）Connection, the absorption lithium bromide hot water flooding Ejector half heat pump（3）Second outlet（a4）The output interface being connect as the entrance with secondary network（11）.