CN105180244B

CN105180244B - A kind of radiator and flooring radiation heating loop cascade heat exchange station system and heat stepped utilization method

Info

Publication number: CN105180244B
Application number: CN201510707422.7A
Authority: CN
Inventors: 王芃; 任盼红; 单晓芳; 曹姗姗
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2018-02-02
Anticipated expiration: 2035-10-27
Also published as: CN105180244A

Abstract

A kind of radiator and flooring radiation heating loop cascade heat exchange station system and heat stepped utilization method, the present invention relates to radiator and flooring radiation heating loop cascade heat exchange station system and heat stepped utilization method.The present invention is to solve existing radiator heating and flooring radiation heating two level net parallel heat exchanging station system and radiator heating and flooring radiation heating heat exchanger parallel heat exchanging station system is not yet in effect utilizes heat medium temperature, i.e. two level net return water temperature is higher, and the problem of radiator heating and the too high investment of flooring radiation heating heat exchanger parallel heat exchanging station system.Specially：A kind of radiator and flooring radiation heating loop cascade heat exchange station system includes heat exchanger unit, two level net water circulating pump unit P1, two level net water circulating pump unit P2, multifunctional pump unit P3, control valve unit F1, control valve unit F2 and control valve unit F3.Radiator heating loop is connected in series with flooring radiation heating loop.The present invention is applied to Heat Supply Engineering field.

Description

A kind of radiator and flooring radiation heating loop cascade heat exchange station system and heat step Application way

Technical field

The present invention relates to radiator and flooring radiation heating loop cascade heat exchange station system and heat stepped utilization method.

Background technology

Raising with living standards of the people and the high request to indoor environment comfort level, the application of flooring radiation heating are got over Come it is more extensive, in heating system in same heat exchange station existing radiator heating user have again flooring radiation heating user phenomenon be cured Add universal.China《Civil buildings heating ventilator and In Air Conditioning Design specification》Provide the supply water temperature of Radiant Floor Heating System No more than 60 DEG C, supply backwater temperature difference is not preferably greater than 10 DEG C；The supply water temperature of radiator heating is no more than 85 DEG C, supply backwater temperature difference It is not preferably less than 20 DEG C.Due to two kinds of heating users designs and the difference of operational factor, when the two coexists in same heat exchange station often Using two ways as depicted in figs. 1 and 2.The radiator heating loop of two level net and flooring radiation heating loop be simultaneously in Fig. 1 Connection.Two level net supply water temperature is designed and adjusted according to radiator heating system, and flooring radiation heating loop is taken out by multifunctional pump Draw the backwater of flooring radiation heating loop to feed pipe, supplied water with the two level net of higher temperature and reach flooring radiation heating after mixing The supply water temperature requirement of loop.Two sets of heat exchanger systems are set in Fig. 2 in heat exchange station respectively to radiator heating loop and floor Radiant heating loop heat supply.Two kinds of systems respectively have a feature, but it is not yet in effect utilize heat medium temperature, i.e., two level net return water temperature compared with Height, and the heat exchange station system investment of two sets of heat exchangers shown in Fig. 2 is too high.

On the other hand, from the point of view of energy saving in heating system, thermal source and heating network are required to suitably reduce heating agent temperature Degree.By reducing heat medium temperature, the available Heating style of heating system is more extensive, the relatively low heat resource of those grades, such as Low-grade geothermal energy and low-grade industrial exhaust heat etc. can obtain effective utilization.Existing steam power plant is in order to improve heating load and the energy Utilization ratio, often carry out low-vacuum-operating transformation and increase the transformation of source pump.These transformation projects are required to relatively low confession Hot systems return water temperature, it otherwise will likely endanger thermoelectric cycle or substantially reduce source pump efficiency.Using low temperature heating agent, heat supply On the way radiation loss of the pipe network in heating agent course of conveying will be reduced effectively, while be decreased because pipeline network leak causes Thermal loss.Therefore, reducing the return water temperature of heating system turns into the key that current heating system seeks efficient energy-saving operation One of problem.

The content of the invention

The invention aims to solve existing radiator heating and flooring radiation heating two level net parallel heat exchanging station system System and radiator heating heat with flooring radiation, and heat exchanger parallel heat exchanging station system is not yet in effect to utilize heat medium temperature, i.e. two level net Return water temperature is higher, and the problem of radiator heating and the too high investment of flooring radiation heating heat exchanger parallel heat exchanging station system, And a kind of radiator and flooring radiation heating loop cascade heat exchange station system and heat stepped utilization method proposed.

Above-mentioned goal of the invention is achieved through the following technical solutions：

A kind of radiator and flooring radiation heating loop cascade heat exchange station system includes heat exchanger unit HEX, two level net follows Ring pump unit P1, two level net water circulating pump unit P2, multifunctional pump unit P3, control valve unit F1, control valve unit F2 and control Valve cell F3 processed；Such as Fig. 3；

Heat exchanger unit feed pipe cc' one end c connection heat exchanger unit HEX, heat exchanger unit feed pipe cc''s is another End c' connects the feed pipe of radiator heating loop and the feed pipe ee' of flooring radiation heating loop respectively；

Wherein, heat exchanger unit feed pipe cc' other end c' passes through control valve unit F2 connections flooring radiation heating ring The feed pipe ee' on road；

The return pipe that the feed pipe of radiator heating loop passes through radiator heating user Us connection radiator heating loops Node d, the backwater pipe node d of radiator heating loop are divided into 2 tunnels, and one of them passes through control valve unit F1 connection heat exchanger lists First return pipe a " a；Another passes through the feed pipe ee' of control valve unit F3 connection flooring radiation heating loops, flooring radiation confession The water supply tube coupling that the feed pipe ee' of warm loop e' ends pass through two level net water circulating pump unit P2 connection flooring radiation heating loops Point f, the water supply pipe node f of flooring radiation heating loop after flooring radiation heating user Ud by connecting flooring radiation heating loop Backwater pipe node a', the backwater pipe node a' of flooring radiation heating loop is divided into 2 tunnels, and one of them passes through multifunctional pump unit P3 The water supply pipe node e' of flooring radiation heating loop is connected, another connection heat exchanger unit return pipe a " a, heat exchanger unit returns Water pipe a " a a ends pass through two level net water circulating pump unit P1 connection heat exchanger unit backwater pipe node b, heat exchanger unit backwater Pipe node b connection heat exchanger units HEX.

A kind of heat stepped utilization method detailed process of radiator and flooring radiation heating loop cascade heat exchange station system For：

First, as the flow G of radiator heating loop_sEqual to the flow G of flooring radiation heating loop_dWhen, it is divided into 3 kinds of situations：

1.1) as the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1；Tool Body process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and radiator heating loop is flowed to from heat exchanger unit water supply pipe node c' Feed pipe, the supply water temperature of radiator heating loop is t_s1；Pass through radiator heating from heat exchanger unit water supply pipe node c' User Us reaches the backwater pipe node d of radiator heating loop, and the return water temperature of radiator heating loop is t_s2；Radiator heating The backwater of loop all flows to the water supply pipe node e of flooring radiation heating loop, flooring radiation heating by control valve unit F3 The supply water temperature of loop is t_d1, t_d1=t_s2, flooring radiation heating ring is flowed to from the water supply pipe node e of flooring radiation heating loop The water supply pipe node e' on road, the water supply pipe node f of flooring radiation heating loop is reached by two level net water circulating pump unit P2, from The water supply pipe node f of flooring radiation heating loop reaches the backwater of flooring radiation heating loop by flooring radiation heating user Ud Pipe node a', the return water temperature of flooring radiation heating loop is t_d2, flowed to from the backwater pipe node a' of flooring radiation heating loop Heat exchanger unit backwater pipe node a ", heat exchanger unit backwater pipe node a is flowed to from heat exchanger unit backwater pipe node a " ', led to Cross two level net water circulating pump unit P1 and reach heat exchanger unit backwater pipe node b, flowed to from heat exchanger unit backwater pipe node b' Heat exchanger unit HEX, it is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

1.2) as the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；Tool Body process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and radiator heating loop is flowed to from heat exchanger unit water supply pipe node c' Feed pipe, the supply water temperature of radiator heating loop is t_s1, by reaching radiator heating ring after radiator heating user Us The backwater pipe node d on road, the backwater pipe node d of radiator heating loop are divided into 2 flow directions, the backwater temperature of radiator heating loop Spend for t_s2, one of them flows through the water supply pipe node e that control valve unit F3 reaches flooring radiation heating loop, and flow is G_s2d；

Another flows through control valve unit F1 and reaches heat exchanger unit backwater pipe node a ", flow G_s- G_s2d；

The water supply pipe node e' of flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop, is flowed Measure as G_s2d；

The backwater pipe node a' of flooring radiation heating loop is flowed to from heat exchanger unit backwater pipe node a ", passes through multifunctional pump Unit P3 flows to water supply the pipe node e', flow G of flooring radiation heating loop_s- G_s2d；

Flow to after the water supply pipe node e' of flooring radiation heating loop two level net water supply mixing by two level net recirculated water Pump unit P2 reaches the water supply pipe node f of flooring radiation heating loop, and the supply water temperature of flooring radiation heating loop is t_d1, from ground The water supply pipe node f of plate radiant heating loop reaches the backwater of flooring radiation heating loop after flooring radiation heating user Ud Pipe node a', the backwater pipe node a' of flooring radiation heating loop are divided into 2 flow directions, the return water temperature of flooring radiation heating loop For t_d2,

One of flow direction flows to floor from the backwater pipe node a' of flooring radiation heating loop by multifunctional pump unit P3 Water supply the pipe node e', flow G of radiant heating loop_s- G_s2d；Return pipe of another flow direction from flooring radiation heating loop Node a' flows to heat exchanger unit backwater pipe node a ", flow G_s2d, lead to the backwater pipe node d from radiator heating loop The two level net water supply for crossing control valve unit F1 arrival heat exchanger unit backwater pipe nodes a " meets at heat exchanger unit backwater tube coupling Point a ", it is G to converge rear flow_s, heat exchanger unit backwater pipe node a, heat exchanger are flowed to from heat exchanger unit backwater pipe node a " Unit backwater pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger unit Backwater pipe node b reaches heat exchanger unit HEX, is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

1.3) as the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1, but It is greater than the return water temperature t of flooring radiation heating loop_d2；Detailed process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' is divided into 2 flow directions, one of them The feed pipe of radiator heating loop is flowed to, the supply water temperature of radiator heating loop is t_s1, flow G_s；

Another flows through the water supply pipe node e that control valve unit F2 flows to flooring radiation heating loop, and flow is G_H2d；The return pipe of radiator heating loop is reached after radiator heating user Us from the feed pipe of radiator heating loop Node d, the backwater pipe node d of radiator heating loop are divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, its In one flow through control valve unit F1 and reach heat exchanger unit backwater pipe node a ", flow G_H2d；Another is flowed through Control valve unit F3 reaches water supply the pipe node e, flow G of flooring radiation heating loop_s- G_H2d；

The feed pipe of flooring radiation heating loop is flowed to by control valve unit F2 from heat exchanger unit water supply pipe node c' Node e two level net supplies water reaches flooring radiation with the backwater pipe node d from radiator heating loop by control valve unit F3 The water supply pipe node e of heating loop two level net supplies water to mix to the water supply pipe node e of flooring radiation heating loop, plate radiation and supplied The supply water temperature of warm loop is t_d1；The confession of flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop Water pipe node e', the water supply pipe node f of flooring radiation heating loop is reached by two level net water circulating pump unit P2, from floor spoke The water supply pipe node f for penetrating heating loop reaches the backwater tube coupling of flooring radiation heating loop after flooring radiation heating user Ud Point a', the return water temperature of flooring radiation heating loop is t_d2, heat exchange is reached from the backwater pipe node a' of flooring radiation heating loop Device unit backwater pipe node a ", flow G_s；With the backwater pipe node d from radiator heating loop by control valve unit F1 to Two level net water supply up to heat exchanger unit backwater pipe node a " meets at heat exchanger unit backwater pipe node a ", and converging rear flow is G_s+G_H2d；

Heat exchanger unit backwater pipe node a is reached from heat exchanger unit backwater pipe node a ", passes through two level net water circulating pump Unit P1 reaches heat exchanger unit backwater pipe node b, reaches heat exchanger unit HEX from heat exchanger unit backwater pipe node b, is weighed Newly it is heated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

2nd, as the flow G of radiator heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, it is divided into 3 kinds of situations：

2.1) as the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1；Tool Body process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' is divided into 2 flow directions, one of them Flow through water supply pipe node e, flow G that control valve unit F2 flows to flooring radiation heating loop_H2d；

Another flow direction reaches the feed pipe of radiator heating loop, and the supply water temperature of radiator heating loop is t_s1, stream Measure as G_s；The return pipe for passing through radiator heating user Us arrival radiator heating loops from the feed pipe of radiator heating loop Node d, the return water temperature of radiator heating loop is t_s2；Pass through control valve list from the backwater pipe node d of radiator heating loop First F3 reaches the water supply pipe node e of flooring radiation heating loop, passes through control valve unit with heat exchanger unit water supply pipe node c' F2 flows to the water supply pipe node e of flooring radiation heating loop current mixing, and flow is G after mixing_s+G_H2d；

The water supply pipe node e' of flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop；

Flowed to from the water supply pipe node e of flooring radiation heating loop to the water supply pipe node e''s of flooring radiation heating loop Two level net supplies water reaches flooring radiation heating with the backwater pipe node a' from flooring radiation heating loop by multifunctional pump unit P3 The backwater pipe node e' of loop two level net supplies water to mix to the water supply pipe node e' of flooring radiation heating loop, flooring radiation and supplied The supply water temperature of warm loop is t_d1, flow G_d；

Flooring radiation is reached by two level net water circulating pump unit P2 from the water supply pipe node e' of flooring radiation heating loop The water supply pipe node f of heating loop, reach in ground by flooring radiation heating user Ud from the feed pipe f of flooring radiation heating loop The return pipe a' of plate radiant heating loop, the return pipe a' of flooring radiation heating loop are divided into 2 flow directions, and flooring radiation is heating Family Ud return water temperature is t_d2, one of them flows through the feed pipe that multifunctional pump unit P3 reaches flooring radiation heating loop E', flow G_d- G_s- G_H2d；

Another flow direction flows to heat exchanger unit return pipe a ", flow G from the return pipe a' of flooring radiation heating loop_s +G_H2d,

From heat exchanger unit return pipe a " to heat exchanger unit return pipe a, reached by two level net water circulating pump unit P1 Heat exchanger unit return pipe b, heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, is reheated to temperature t_s1Reach Heat exchanger unit water supply pipe node c；

2.2) as the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；Tool Body process is：

2.2.1) when the return water temperature of radiator heating loopWhen, detailed process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' flows to radiator heating loop Feed pipe, the supply water temperature of radiator heating loop is t_s1, by reaching radiator heating loop after radiator heating user Us Backwater pipe node d, the backwater pipe node d of radiator heating loop is divided into 2 flow directions, the return water temperature of radiator heating loop For t_s2, one of them flows through water supply the pipe node e, flow G that control valve unit F3 reaches flooring radiation heating loop_s2d；

There are 2 to flow to the water supply pipe node e' for meeting at flooring radiation heating loop, it is one of to flow to from flooring radiation The water supply pipe node e of heating loop flows to water supply the pipe node e', flow G of flooring radiation heating loop_s2d；Another flow direction The feed pipe of flooring radiation heating loop is flowed to by multifunctional pump unit P3 from the backwater pipe node a' of flooring radiation heating loop Node e', flow G_d- G_s2d；

The water supply pipe node f of flooring radiation heating loop is reached after current mixing by two level net water circulating pump unit P2, The supply water temperature of flooring radiation heating loop is t_d1, the water supply pipe node f of flooring radiation heating loop is by flooring radiation heating The backwater pipe node a' that flooring radiation heating loop is reached after user Ud is divided into 2 flow directions, the backwater of flooring radiation heating loop Temperature is t_d2, one of them flows to from the backwater pipe node a' of flooring radiation heating loop and flows to floor by multifunctional pump unit P3 Water supply the pipe node e', flow G of radiant heating loop_d- G_s2d；Return pipe of another flow direction from flooring radiation heating loop Node a' flows to heat exchanger unit backwater pipe node a ", flow G_s2d, lead to the backwater pipe node d from radiator heating loop The flow direction for crossing control valve unit F1 arrival heat exchanger unit backwater pipe nodes a " meets at heat exchanger unit backwater pipe node a ", converges Flow is G after conjunction_s, from heat exchanger unit backwater pipe node a " to heat exchanger unit backwater pipe node a, heat exchanger unit return pipe Node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger unit backwater pipe node B reaches heat exchanger unit HEX, is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

2.2.2) when the return water temperature of radiator heating loopWhen, detailed process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' reaches radiator heating loop Feed pipe, the supply water temperature of radiator heating loop is t_s1；The feed pipe of radiator heating loop passes through radiator heating user Us reaches the backwater pipe node d of radiator heating loop, and the return water temperature of radiator heating loop is t_s2；Radiator heating loop Backwater pipe node d pass through control valve unit F3 reach flooring radiation heating loop water supply pipe node e, flooring radiation heating ring The water supply pipe node e on road flows to the water supply pipe node e' of flooring radiation heating loop；

The backwater pipe node a' of flooring radiation heating loop also reaches flooring radiation heating loop by multifunctional pump unit P3 Water supply pipe node e', flow G_d- G_s；

The flow direction of water supply pipe node e' from the water supply pipe node e of flooring radiation heating loop to flooring radiation heating loop The return pipe for passing through multifunctional pump unit P3 arrival flooring radiation heating loops with the backwater pipe node a' of flooring radiation heating loop Node e' flow direction is mixed to the water supply pipe node e' of flooring radiation heating loop, the supply water temperature of flooring radiation heating loop t_d1, flow G_d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation by two level net water circulating pump unit P2 and supplied The water supply pipe node f of warm loop, the feed pipe f of flooring radiation heating loop reach floor spoke by flooring radiation heating user Ud The return pipe a' for penetrating heating loop is divided into 2 flow directions, and flooring radiation heating user Ud return water temperature is t_d2, one of flow direction The feed pipe a', flow G of flooring radiation heating loop are reached by multifunctional pump unit P3_d- G_s；Another is flowed to from floor spoke The return pipe a' for penetrating heating loop flows to heat exchanger unit return pipe a ", flow G_s, from heat exchanger unit return pipe a " to changing Hot device unit return pipe a, heat exchanger unit return pipe a reach heat exchanger unit return pipe by two level net water circulating pump unit P1 B, heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, is reheated to temperature t_s1Reach heat exchanger unit feed pipe Node c；

2.2.3) as the return water temperature t of radiator heating loop_s2Meet relationWhen, Detailed process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c' and is divided into 2 flow directions, and one of them flows through control valve unit F2 and flowed to Water supply the pipe node e, flow G of flooring radiation heating loop_H2d；

Another flow direction reaches the feed pipe of radiator heating loop, and the supply water temperature of radiator heating loop is t_s1, stream Measure as G_s；The feed pipe of radiator heating loop reaches the backwater tube coupling of radiator heating loop by radiator heating user Us Point d, the return water temperature of radiator heating loop is t_s2；The backwater pipe node d of radiator heating loop passes through control valve unit F3 The water supply pipe node e of flooring radiation heating loop is reached, is flowed with heat exchanger unit water supply pipe node c' by control valve unit F2 To the water supply pipe node e of flooring radiation heating loop two level net water supply mixing, flow is G after mixing_s+G_H2d；

Flooring radiation heating ring is also reached by multifunctional pump unit P3 from the backwater pipe node a' of flooring radiation heating loop Water supply the pipe node e', flow G on road_d- G_s- G_H2d；

The flow direction of water supply pipe node e' from the water supply pipe node e of flooring radiation heating loop to flooring radiation heating loop The return pipe for passing through multifunctional pump unit P3 arrival flooring radiation heating loops with the backwater pipe node a' of flooring radiation heating loop The supply water temperature that node e' flow direction is mixed to flooring radiation heating user Ud is t_d1, flow G_d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation by two level net water circulating pump unit P2 and supplied The water supply pipe node f of warm loop, the feed pipe f of flooring radiation heating loop reach floor spoke by flooring radiation heating user Ud The return pipe a' of heating loop is penetrated, the return pipe a' of flooring radiation heating loop is divided into 2 flow directions, flooring radiation heating user Ud Return water temperature be t_d2, one of them flows through the feed pipe a' that multifunctional pump unit P3 reaches flooring radiation heating loop, stream Measure as G_d- G_s- G_H2d；Another flow direction flows to heat exchanger unit return pipe a " from the return pipe a' of flooring radiation heating loop, Flow is G_s+G_H2d, from heat exchanger unit return pipe a " to heat exchanger unit return pipe a, heat exchanger unit return pipe a passes through two Level net water circulating pump unit P1 reaches heat exchanger unit return pipe b, and heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, It is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

2.3) as the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1When, Detailed process is：

The flow direction of water supply pipe node e' from the water supply pipe node e of flooring radiation heating loop to flooring radiation heating loop The return pipe for passing through multifunctional pump unit P3 arrival flooring radiation heating loops with the backwater pipe node a' of flooring radiation heating loop It is t that node e' flow direction, which is mixed to the supply water temperature of flooring radiation heating loop,_d1, flow G_d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation by two level net water circulating pump unit P2 and supplied The water supply pipe node f of warm loop, the feed pipe f of flooring radiation heating loop reach floor spoke by flooring radiation heating user Ud The return pipe a' of heating loop is penetrated, the return pipe a' of flooring radiation heating loop is divided into 2 flow directions, flooring radiation heating loop Return water temperature is t_d2, one of them flows through the feed pipe a' that multifunctional pump unit P3 reaches flooring radiation heating loop, flow For G_d- G_s- G_H2d；Another flow direction flows to heat exchanger unit return pipe a " from the return pipe a' of flooring radiation heating loop, flows Measure as G_s+G_H2d, from heat exchanger unit return pipe a " to heat exchanger unit return pipe a, heat exchanger unit return pipe a passes through two level Net water circulating pump unit P1 reaches heat exchanger unit return pipe b, and heat exchanger unit HEX, quilt are reached from heat exchanger unit feed pipe b It is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

3rd, the flow G of radiator heating loop_sMore than the flow G of flooring radiation heating loop_dWhen, point three kinds of situations：

3.1) the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1；Specifically Process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' flows to radiator heating loop Feed pipe, the supply water temperature of radiator heating loop is t_s1, flow G_s；

The feed pipe of radiator heating loop reaches the backwater of radiator heating loop after radiator heating user Us Pipe node d is divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, one of them flows through control valve unit F1 Reach heat exchanger unit backwater pipe node a ", flow G_s- G_d；Another flows through control valve unit F3 and reaches flooring radiation Water supply the pipe node e, flow G of heating loop_d, flow to flooring radiation from the water supply pipe node e of flooring radiation heating loop and supply The water supply pipe node e' of warm loop, the water supply pipe node of flooring radiation heating loop is reached by two level net water circulating pump unit P2 F, the water supply pipe node f of flooring radiation heating loop reach flooring radiation heating loop after flooring radiation heating user Ud Backwater pipe node a', the return water temperature of flooring radiation heating loop is t_d2, the backwater pipe node a' of flooring radiation heating loop arrives Up to heat exchanger unit backwater pipe node a ", heat exchanger unit backwater pipe node a " reaches heat exchanger unit backwater pipe node a, heat exchange Device unit backwater pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger list First backwater pipe node b reaches heat exchanger unit HEX, is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

3.2) the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；Specifically Process is：

The water supply pipe node f of flooring radiation heating loop is reached after current mixing by two level net water circulating pump unit P2, The supply water temperature of flooring radiation heating loop is t_d1, the water supply pipe node f of flooring radiation heating loop is by flooring radiation heating The backwater pipe node a' of flooring radiation heating loop is reached after user Ud, the backwater pipe node a' of flooring radiation heating loop is divided into 2 flow directions, the return water temperature of flooring radiation heating loop is t_d2, return pipe of one of flow direction from flooring radiation heating loop Node a' flows to water supply the pipe node e', flow G of flooring radiation heating loop by multifunctional pump unit P3_d- G_s2d；Another Flow direction flows to heat exchanger unit backwater pipe node a ", flow G from the backwater pipe node a' of flooring radiation heating loop_s2d, with from The flow direction that the backwater pipe node d of radiator heating loop reaches heat exchanger unit backwater pipe node a " by control valve unit F1 is converged Together in heat exchanger unit backwater pipe node a ", it is G to converge rear flow_s, from heat exchanger unit backwater pipe node a " to heat exchanger list First backwater pipe node a, heat exchanger unit backwater pipe node a reach heat exchanger unit backwater by two level net water circulating pump unit P1 Pipe node b, heat exchanger unit HEX is reached from heat exchanger unit backwater pipe node b, is reheated to temperature t_s1Reach heat exchanger Unit water supply pipe node c；

3.3) the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1；Specifically Process is：

Another flows through the water supply pipe node e that control valve unit F2 flows to flooring radiation heating loop, and flow is G_H2d；

The feed pipe of radiator heating loop reaches the backwater of radiator heating loop after radiator heating user Us Pipe node d, the backwater pipe node d of radiator heating loop are divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, One of them flows through control valve unit F1 and reaches heat exchanger unit backwater pipe node a ", flow G_s- G_d+G_H2d；

Another flows through the water supply pipe node e that control valve unit F3 reaches flooring radiation heating loop, and flow is G_d- G_H2d；

The feed pipe of flooring radiation heating loop is flowed to by control valve unit F2 from heat exchanger unit water supply pipe node c' Node e flow direction reaches flooring radiation heating ring with the backwater pipe node d from radiator heating loop by control valve unit F3 It is t that the water supply pipe node e on road flow direction, which is mixed to the supply water temperature of flooring radiation heating loop,_d1；From flooring radiation heating loop Water supply pipe node e flow to the water supply pipe node e' of flooring radiation heating loop, pass through two level net water circulating pump unit P2 and reach The water supply pipe node f of flooring radiation heating loop, the water supply pipe node f of flooring radiation heating loop are heating by flooring radiation The backwater pipe node a' of flooring radiation heating loop is reached after the Ud of family, the return water temperature of flooring radiation heating loop is t_d2, floor The backwater pipe node a' of radiant heating loop reaches heat exchanger unit backwater pipe node a ", flow G_d；With from radiator heating The flow direction that the backwater pipe node d of loop reaches heat exchanger unit backwater pipe node a " by control valve unit F1 meets at heat exchanger Unit backwater pipe node a ", it is G to converge rear flow_s+G_H2d；

Heat exchanger unit backwater pipe node a " reaches heat exchanger unit backwater pipe node a, heat exchanger unit backwater pipe node a Heat exchanger unit backwater pipe node b is reached by two level net water circulating pump unit P1, reached from heat exchanger unit backwater pipe node b Heat exchanger unit HEX, it is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c.

Invention effect

Using a kind of radiator and flooring radiation heating loop cascade heat exchange station system and heat cascade utilization of the present invention Method, with solve the existing radiator heating user of same heat exchange station also have flooring radiation heat user when system design and operation Relevant issues：

Generally, the design of flooring radiation heating loop and operation supply water temperature are less than the design and fortune of radiator heating loop Row return water temperature；Although also occur radiator heating loop return water temperature less than flooring radiation heating loop in some systems Supply water temperature, but it is above the situation of its return water temperature.Supplied when having radiator heating user and flooring radiation in heat exchange station simultaneously During warm user, the backwater for existing for effectively utilizing radiator heating loop of this temperature difference, two level net return water temperature is reduced, And then also reduce one-level net return water temperature and provide advantage；By the reasonable connection of system in heat exchange station, heat can be realized The cascade utilization of energy, and reach the purpose reduced investment outlay with operating cost simultaneously.

Present invention employs a set of heat exchanger system, two level net radiator heating loop is connected with flooring radiation heating loop Based on, the system form (referring to Fig. 3) of auxiliary in parallel, mainly including heat exchanger unit (HEX), two level net water circulating pump unit (P1 and P2), multifunctional pump unit (P3) and control valve unit (F1, F2 and F3), the system establishes main connection and auxiliary connects Connect, preferentially to use radiator heating loop backwater supply flooring radiation heating user, while two heating loops of matching is negative Lotus and operating mode.

1st, the cascade utilization for compared with low grade heat energy (radiator heating backwater), realizing heat energy is efficiently utilized；

2nd, when the return water temperature of radiator heating loop is not less than the supply water temperature of flooring radiation heating loop, the present invention can About 4~11 DEG C of two level net return water temperature is reduced, and then reduces one-level net return water temperature；

3rd, when the return water temperature of radiator heating loop is not less than the supply water temperature of flooring radiation heating loop, the present invention can Two level net total flow about 16~30% is reduced, reduces the investment of the power consumption and pipeline of heat exchange station internal circulation water pump；

4th, heat exchanger system is reduced, reduces heat exchange station investment.

Brief description of the drawings

Fig. 1 is radiator heating and flooring radiation heating two level net parallel heat exchanging station system diagram；

Fig. 2 is radiator heating and flooring radiation heating heat exchanger parallel heat exchanging station system diagram；

Fig. 3 is that radiator cascades heat exchange station system figure with flooring radiation heating loop.

Embodiment

Embodiment one：A kind of radiator and flooring radiation heating loop cascade heat exchange station system of present embodiment Including heat exchanger unit HEX, two level net water circulating pump unit P1, two level net water circulating pump unit P2, multifunctional pump unit P3, control Valve cell F1, control valve unit F2 and control valve unit F3；Such as Fig. 3；

The system establishes main connection and auxiliary connection, preferentially to use radiator heating loop backwater supply floor spoke Heating user is penetrated, while matches the load and operating mode of two heating loops.

Main connection is radiator heating loop and flooring radiation heating loop is connected in series.If radiator heating user For Us, flooring radiation heating user is Ud.The return pipe Us-d of radiator heating loop and the water supply of flooring radiation heating loop Pipe e-e'-f-Ud is connected to by the pipeline d-e connections equipped with control valve F3, the return pipe Ud-a' of flooring radiation heating loop Heat exchanger unit return pipe a-b.Mainly connect and compose loop a-b-c-c'-Us-d-e-e'-f-Ud-a'-a "-a.

Because radiator loop and flooring radiation loop there may be flow and the inconsistent situation of supply water temperature, to solve The matching problem of different flow and supply water temperature, the present invention have also set up auxiliary connection, including：

1. the return pipe of radiator heating loop is connected with heat exchanger unit return pipe by control valve F1, i.e. d-a "；

2. heat exchanger unit feed pipe is connected with the feed pipe of flooring radiation heating loop by control valve F2, i.e. c'-e；

3. the feed pipe of the return pipe of flooring radiation heating loop and flooring radiation heating loop passes through equipped with multifunctional pump P3 Bypass pipe connection, i.e. a'-e'.

Premised on preferentially using radiator heating loop backwater supply flooring radiation heating user, when radiator heating ring When road return water temperature is higher than floor radiant heating loop supply water temperature, by aiding in connection a'-e' to be drawn flooring radiation heating ring Road backwater is mixed；When radiator heating loop return water temperature is less than flooring radiation heating loop supply water temperature, by auxiliary Help connection c'-e to introduce heat exchanger exit water supply to be mixed；If necessary, radiator heating loop backwater, flooring radiation can be supplied Warm loop backwater and heat exchanger exit supply water to be mixed simultaneously, to meet the water supply parameter request of floor radiant heating loop.When scattered When hot device heating loop backwater only has partial discharge supply flooring radiation heating user, unnecessary flow is by auxiliary connection d-a " Return to heat exchanger unit.

In addition, to solve the problems, such as the level pressure of radiator heating loop and flooring radiation heating loop under cascade form, two Level net water circulating pump unit is made up of the water circulating pump unit of two sets of series connection, including following on heat exchanger unit return pipe The ring pump unit P1 and water circulating pump unit P2 on flooring radiation heating loop feed pipe.Two water circulating pump units The common circulation power for providing radiator heating loop and flooring radiation heating loop, passes through two sets of water circulating pump lists of reasonable disposition The lift of member, divide two-stage to lift circulating head, the level pressure requirement of each heating loop of two level net can be met.

Embodiment two, present embodiment are unlike embodiment one, the heat exchanger unit backwater Pipe a " a one end a connects the level pressure equipment of two level net by pipeline.

Other steps and parameter are identical with embodiment one.

Embodiment three：A kind of radiator and flooring radiation heating loop cascade heat exchange station system of present embodiment Heat stepped utilization method, it is characterised in that a kind of heat of radiator and flooring radiation heating loop cascade heat exchange station system Measuring stepped utilization method detailed process is：Such as Fig. 3；

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, is supplied water from heat exchanger unit Pipe node c reaches heat exchanger unit water supply pipe node c', and radiator heating loop is flowed to from heat exchanger unit water supply pipe node c' Feed pipe, the supply water temperature of radiator heating loop is t_s1；Pass through radiator heating from heat exchanger unit water supply pipe node c' User Us reaches the backwater pipe node d of radiator heating loop, and the return water temperature of radiator heating loop is t_s2；Radiator heating The backwater of loop all flows to the water supply pipe node e of flooring radiation heating loop, flooring radiation heating by control valve unit F3 The supply water temperature of loop is t_d1, t_d1=t_s2, flooring radiation heating ring is flowed to from the water supply pipe node e of flooring radiation heating loop The water supply pipe node e' on road, the water supply pipe node f of flooring radiation heating loop is reached by two level net water circulating pump unit P2, from The water supply pipe node f of flooring radiation heating loop reaches the backwater of flooring radiation heating loop by flooring radiation heating user Ud Pipe node a', the return water temperature of flooring radiation heating loop is t_d2, flowed to from the backwater pipe node a' of flooring radiation heating loop Heat exchanger unit backwater pipe node a ", heat exchanger unit backwater pipe node a is flowed to from heat exchanger unit backwater pipe node a " ', led to Cross two level net water circulating pump unit P1 and reach heat exchanger unit backwater pipe node b, flowed to from heat exchanger unit backwater pipe node b' Heat exchanger unit HEX, hot water (water supply of two level net) are reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

Control valve unit F3 standard-sized sheets, F1 and F2 are closed, and multifunctional pump P3 is out of service, water circulating pump P1 and P2 normal operation, So as to

Form loop a-b-c-c'-Us-d-e-e'-f-Ud-a'-a "-a；

Each pipeline flow is G in loop_s, G_s=G_d；

2 plumes to the water supply pipe node e' of flooring radiation heating loop two level net water supply are circulated after mixing by two level net Pump unit P2 reaches the water supply pipe node f of flooring radiation heating loop, and the supply water temperature of flooring radiation heating loop is t_d1, from The water supply pipe node f of flooring radiation heating loop reaches returning for flooring radiation heating loop after flooring radiation heating user Ud Water pipe node a', the backwater pipe node a' of flooring radiation heating loop are divided into 2 flow directions, the backwater temperature of flooring radiation heating loop Spend for t_d2,

One of flow direction flows to floor from the backwater pipe node a' of flooring radiation heating loop by multifunctional pump unit P3 Water supply the pipe node e', flow G of radiant heating loop_s- G_s2d；Return pipe of another flow direction from flooring radiation heating loop Node a' flows to heat exchanger unit backwater pipe node a ", flow G_s2d, lead to the backwater pipe node d from radiator heating loop The two level net water supply for crossing control valve unit F1 arrival heat exchanger unit backwater pipe nodes a " meets at heat exchanger unit backwater tube coupling Point a ", it is G to converge rear flow_s, heat exchanger unit backwater pipe node a, heat exchanger are flowed to from heat exchanger unit backwater pipe node a " Unit backwater pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger unit Backwater pipe node b reaches heat exchanger unit HEX, and hot water (water supply of two level net) is reheated to temperature t_s1Reach heat exchanger unit Water supply pipe node c；

In addition to main connection is used, it should also open auxiliary connection d-a " and a'-e', i.e. control valve F1 and F3 and open, F2 is closed Close, multifunctional pump P3 operations, water circulating pump P1 and P2 normal operation, it is as follows to form loop：

Heat exchanger unit backwater pipe node a is reached from heat exchanger unit backwater pipe node a ", passes through two level net water circulating pump Unit P1 reaches heat exchanger unit backwater pipe node b, and heat exchanger unit HEX, hot water are reached from heat exchanger unit backwater pipe node b (water supply of two level net) is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

In addition to main connection is used, it should also open auxiliary and connect d-a " and c'-e, be i.e. control valve F1, F2 and F3 is opened, and is mixed Water pump P 3 is out of service, water circulating pump P1 and P2 normal operation, and it is as follows to form loop：

, will not under nominal situation because the design and running temperature of radiator heating loop are higher than floor radiant heating loop There is radiator heating loop return water temperature t_s2Less than flooring radiation heating loop return water temperature t_d2Situation, this example is herein Not illustrate；

From heat exchanger unit return pipe a " to heat exchanger unit return pipe a, reached by two level net water circulating pump unit P1 Heat exchanger unit return pipe b, heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, two hot water (water supply of two level net) are weighed Newly it is heated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

In addition to main connection is used, it should also open auxiliary connection c'-e and e'-a', i.e. control valve F2 and F3 and open, F1 is closed Close, multifunctional pump P3 operations, water circulating pump P1 and P2 normal operation, it is as follows to form loop：

2.2.1) when the return water temperature of radiator heating loopWhen, the same work of system type of attachment Condition 1.2；Detailed process is：

The water supply pipe node of flooring radiation heating loop is reached after 2 bursts of current mixing by two level net water circulating pump unit P2 F, the supply water temperature of flooring radiation heating loop is t_d1, the water supply pipe node f of flooring radiation heating loop is by flooring radiation confession The backwater pipe node a' that flooring radiation heating loop is reached after warm user Ud is divided into 2 flow directions, and flooring radiation heating loop returns Coolant-temperature gage is t_d2, one of them flows to from the backwater pipe node a' of flooring radiation heating loop and flows to ground by multifunctional pump unit P3 Water supply the pipe node e', flow G of plate radiant heating loop_d- G_s2d；Backwater of another flow direction from flooring radiation heating loop Pipe node a' flows to heat exchanger unit backwater pipe node a ", flow G_s2d, with the backwater pipe node d from radiator heating loop The flow direction that heat exchanger unit backwater pipe node a " is reached by control valve unit F1 meets at heat exchanger unit backwater pipe node a ", It is G to converge rear flow_s, from heat exchanger unit backwater pipe node a " to heat exchanger unit backwater pipe node a, heat exchanger unit backwater Pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger unit backwater tube coupling Point b reaches heat exchanger unit HEX, and hot water (water supply of two level net) is reheated to temperature t_s1Reach heat exchanger unit water supply tube coupling Point c；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation by two level net water circulating pump unit P2 and supplied The water supply pipe node f of warm loop, the feed pipe f of flooring radiation heating loop reach floor spoke by flooring radiation heating user Ud The return pipe a' for penetrating heating loop is divided into 2 flow directions, and flooring radiation heating user Ud return water temperature is t_d2, one of flow direction The feed pipe a', flow G of flooring radiation heating loop are reached by multifunctional pump unit P3_d- G_s；Another is flowed to from floor spoke The return pipe a' for penetrating heating loop flows to heat exchanger unit return pipe a ", flow G_s, from heat exchanger unit return pipe a " to changing Hot device unit return pipe a, heat exchanger unit return pipe a reach heat exchanger unit return pipe by two level net water circulating pump unit P1 B, heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, hot water (water supply of two level net) is reheated to temperature t_s1Reach Heat exchanger unit water supply pipe node c；

Auxiliary connection a'-e', i.e. control valve F3 unlatching should be also opened, F1 and F2 are closed, multifunctional pump P3 operations, water circulating pump P1 and P2 normal operations, it is as follows to form loop：

2.2.3) as the return water temperature t of radiator heating loop_s2Meet relationWhen, System type of attachment is the same as 2.1；Detailed process is：

Another flow direction reaches the feed pipe of radiator heating loop, and the supply water temperature of radiator heating loop is t_s1, stream Measure as G_s；The feed pipe of radiator heating loop reaches the backwater tube coupling of radiator heating loop by radiator heating user Us Point d, the backwater radiator heating user Us of radiator heating loop return water temperature is t_s2；The return pipe of radiator heating loop Node d reaches the water supply pipe node e of flooring radiation heating loop by control valve unit F3, with heat exchanger unit water supply pipe node C' flows to the water supply pipe node e of flooring radiation heating loop two level net water supply mixing by control valve unit F2, is flowed after mixing Measure as G_s+G_H2d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation by two level net water circulating pump unit P2 and supplied The water supply pipe node f of warm loop, the feed pipe f of flooring radiation heating loop reach floor spoke by flooring radiation heating user Ud The return pipe a' of heating loop is penetrated, the return pipe a' of flooring radiation heating loop is divided into 2 flow directions, flooring radiation heating user Ud Return water temperature be t_d2, one of them flows through the feed pipe a' that multifunctional pump unit P3 reaches flooring radiation heating loop, stream Measure as G_d- G_s- G_H2d；Another flow direction flows to heat exchanger unit return pipe a " from the return pipe a' of flooring radiation heating loop, Flow is G_s+G_H2d, from heat exchanger unit return pipe a " to heat exchanger unit return pipe a, heat exchanger unit return pipe a passes through two Level net water circulating pump unit P1 reaches heat exchanger unit return pipe b, and heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, Hot water (water supply of two level net) is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

2.3) as the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1When, System type of attachment is with each pipeline flow with operating mode 2.2.3；Detailed process is：

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation by two level net water circulating pump unit P2 and supplied The water supply pipe node f of warm loop, the feed pipe f of flooring radiation heating loop reach floor spoke by flooring radiation heating user Ud The return pipe a' of heating loop is penetrated, the return pipe a' of flooring radiation heating loop is divided into 2 flow directions, flooring radiation heating loop Return water temperature is t_d2, one of them flows through the feed pipe a' that multifunctional pump unit P3 reaches flooring radiation heating loop, flow For G_d- G_s- G_H2d；Another flow direction flows to heat exchanger unit return pipe a " from the return pipe a' of flooring radiation heating loop, flows Measure as G_s+G_H2d, from heat exchanger unit return pipe a " to heat exchanger unit return pipe a, heat exchanger unit return pipe a passes through two level Net water circulating pump unit P1 reaches heat exchanger unit return pipe b, and heat exchanger unit HEX, heat are reached from heat exchanger unit feed pipe b Water (water supply of two level net) is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

The feed pipe of radiator heating loop reaches the backwater of radiator heating loop after radiator heating user Us Pipe node d is divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, one of them flows through control valve unit F1 Reach heat exchanger unit backwater pipe node a ", flow G_s- G_d；Another flows through control valve unit F3 and reaches flooring radiation Water supply the pipe node e, flow G of heating loop_d, flow to flooring radiation from the water supply pipe node e of flooring radiation heating loop and supply The water supply pipe node e' of warm loop, the water supply pipe node of flooring radiation heating loop is reached by two level net water circulating pump unit P2 F, the water supply pipe node f of flooring radiation heating loop reach flooring radiation heating loop after flooring radiation heating user Ud Backwater pipe node a', the return water temperature of flooring radiation heating loop is t_d2, the backwater pipe node a' of flooring radiation heating loop arrives Up to heat exchanger unit backwater pipe node a ", heat exchanger unit backwater pipe node a " reaches heat exchanger unit backwater pipe node a, heat exchange Device unit backwater pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger list First backwater pipe node b reaches heat exchanger unit HEX, and hot water (water supply of two level net) is reheated to temperature t_s1Reach heat exchanger list First water supply pipe node c；

In addition to main connection is used, it should also open auxiliary and connect d-a ", be i.e. control valve F1 is opened, and F2 and F3 are closed, and mix water Pump P3 is out of service, water circulating pump P1 and P2 normal operation, and it is as follows to form loop：

3.2) the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；System Type of attachment is with each pipeline flow with operating mode 2.2.1；Detailed process is：

The water supply pipe node of flooring radiation heating loop is reached after 2 bursts of current mixing by two level net water circulating pump unit P2 F, the supply water temperature of flooring radiation heating loop is t_d1, the water supply pipe node f of flooring radiation heating loop is by flooring radiation confession The backwater pipe node a' of flooring radiation heating loop, a' points of the backwater pipe node of flooring radiation heating loop are reached after warm user Ud Into 2 flow directions, the return water temperature of flooring radiation heating loop is t_d2, backwater of one of flow direction from flooring radiation heating loop Pipe node a' flows to water supply the pipe node e', flow G of flooring radiation heating loop by multifunctional pump unit P3_d- G_s2d；It is another Individual flow direction flows to heat exchanger unit backwater pipe node a ", flow G from the backwater pipe node a' of flooring radiation heating loop_s2d, with The flow direction for passing through control valve unit F1 arrival heat exchanger unit backwater pipe nodes a " from the backwater pipe node d of radiator heating loop Heat exchanger unit backwater pipe node a " is met at, it is G to converge rear flow_s, from heat exchanger unit backwater pipe node a " to heat exchanger Unit backwater pipe node a, heat exchanger unit backwater pipe node a reach heat exchanger unit by two level net water circulating pump unit P1 and returned Water pipe node b, heat exchanger unit HEX is reached from heat exchanger unit backwater pipe node b, hot water (water supply of two level net) is reheated To temperature t_s1Reach heat exchanger unit water supply pipe node c；

3.3) the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1；System Type of attachment is the same as operating mode 1.3；Detailed process is：

Heat exchanger unit backwater pipe node a " reaches heat exchanger unit backwater pipe node a, heat exchanger unit backwater pipe node a Heat exchanger unit backwater pipe node b is reached by two level net water circulating pump unit P1, reached from heat exchanger unit backwater pipe node b Heat exchanger unit HEX, hot water (water supply of two level net) are reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

Embodiment four, present embodiment are described to work as radiator heating ring unlike embodiment three The flow G on road_sEqual to the flow G of flooring radiation heating loop_dWhen, detailed process is：

As the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1When, flow For G_s2dFor：

Flow is G_s- G_s2dFor：

Other steps and parameter are identical with embodiment three.

Embodiment five, present embodiment are described when radiator supplies unlike embodiment three or four The flow G of warm loop_sEqual to the flow G of flooring radiation heating loop_dWhen, detailed process is：

As the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1, but greatly In the return water temperature t of flooring radiation heating loop_d2When, flow G_{H2 d}For：

Flow G_s- G_H2dFor：

Flow G_s+G_H2dFor：

Other steps and parameter are identical with embodiment three or four.

Embodiment six, present embodiment are described to work as radiator unlike embodiment three, four or five The flow G of heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, detailed process is：

As the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1When, flow G_H2dFor：

Flow G after mixing_s+G_H2dFor：

Flow G_d- G_s- G_H2dFor：

Other steps and parameter are identical with embodiment three, four or five.

Embodiment seven, present embodiment are described when scattered unlike embodiment three, four, five or six The flow G of hot device heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, detailed process is：

As the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1When, it is divided into Following situation：

When the return water temperature of radiator heating loopWhen, flow G_s2dFor：

Flow G_s- G_s2dFor：

Flow G_d- G_s2dFor：

As the return water temperature t of radiator heating loop_s2Meet relationWhen, flow G_{H2 d} For：

Flow G after mixing_s+G_H2dFor：

Flow G_d- G_s- G_H2dFor：

Other steps and parameter are identical with embodiment three, four, five or six.

Embodiment eight, present embodiment are described to work as unlike embodiment three, four, five, six or seven The flow G of radiator heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, detailed process is：

As the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1When, flow G_H2dFor：

Flow G after mixing_s+G_H2dFor：

Flow G_d- G_s- G_H2dFor：

Other steps and parameter are identical with embodiment three, four, five, six or seven.

Embodiment nine, present embodiment are unlike embodiment three, four, five, six, seven or eight, institute State the flow G when radiator heating loop_sMore than the flow G of flooring radiation heating loop_dWhen, detailed process is：

As the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1When, flow G_s2dFor：

Flow G_s- G_s2dFor：

Flow G_d- G_s2dFor：

Other steps and parameter are identical with embodiment three, four, five, six, seven or eight.

Embodiment ten, present embodiment unlike embodiment three, four, five, six, seven, eight or nine, It is described as the flow G of radiator heating loop_sMore than the flow G of flooring radiation heating loop_dWhen, detailed process is：

Flow G_s- G_d+G_H2dFor：

Flow G_d- G_H2dFor：

Converge rear flow G_s+G_H2dFor：

Other steps and parameter are identical with embodiment three, four, five, six, seven, eight or nine.

Beneficial effects of the present invention are verified using following examples：

Embodiment：

A kind of radiator of the present embodiment and flooring radiation heating loop cascade heat exchange station system and heat stepped utilization method, Detailed process is：

The supply and return water temperature and flow of radiator heating loop and flooring radiation heating loop under different operating conditions are shown in (2)~(7) arrange in table 1, according to the parameter comparison of radiator heating loop and flooring radiation heating loop, determine specific embodiment party Corresponding operating mode in formula two, rotating speed and valve unit according to the process control multifunctional pump unit P3 of embodiment two F1, F2, F3 aperture, adjust the main cascade utilization for connecting and two level net hot water being realized with the flow on assistant connecting pipe road.

A kind of radiator of the present invention and flooring radiation heating loop cascade heat exchange station system the simulation experiment result are listed in Table 1 below (8)~(13) arrange.The wherein flow G of heat exchanger inlet and outlet pipeline section (including a "-a, a-b and c-c ")_HSee that (8) arrange；In pipeline section d-e The flow that flooring radiation heating loop is conveyed to by radiator heating loop is shown in that (9) arrange；Auxiliary connection d-a ", c'-e and a'-e' Flow see (10)~(12) arrange；The hot water that radiator heating loop and flooring radiation heating loop are conveyed to by heat exchanger passes through The hot water temperature t of heat exchanger is back to after cascade utilization_H2See that (13) arrange.

(14)~(17) row are given using the simulation experiment result during heat exchange station system shown in Fig. 1 in table 1, and its with The contrast of result of the present invention.When wherein using the heat exchange station system shown in Fig. 1, the flow G of heat exchanger inlet and outlet pipeline section_HAnd return The hot water temperature t of heat exchanger_H2See that (14) and (16) arrange；Contrast the heat exchanger inlet and outlet pipeline flow G of two kinds of heat exchange station systems_H, Flow-rate ratio r_GSee that (15) arrange, heat exchanger inlet and outlet pipeline flow can be reduced using heat exchange station system of the present invention, especially work as radiator When loop return water temperature is not less than flooring radiation heating loop supply water temperature, 16%~30% heat exchanger inlet and outlet pipe can be reduced Duan Liuliang, so as to reduce the initial cost of water circulating pump conveying power consumption and pipeline；Heat exchanger is returned in two kinds of heat exchange station systems of contrast Hot water temperature t_H2, temperature difference t see (17) arrange, using heat exchange station system of the present invention can reduce return heat exchanger hot water temperature, Especially when radiator loop return water temperature is not less than flooring radiation heating loop supply water temperature, 4~11 DEG C can be reduced.

Each operating mode emulation experiment parameter of the embodiment of table 1 collects

The present invention can also have other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, this area Technical staff works as can make various corresponding changes and deformation according to the present invention, but these corresponding changes and deformation should all belong to The protection domain of appended claims of the invention.

Claims

1. a kind of radiator and flooring radiation heating loop cascade heat exchange station system, it is characterised in that a kind of radiator and floor Radiant heating loop cascade heat exchange station system includes heat exchanger unit HEX, two level net water circulating pump unit P1, two level net recirculated water Pump unit P2, multifunctional pump unit P3, control valve unit F1, control valve unit F2 and control valve unit F3；

Heat exchanger unit feed pipe cc' one end c connection heat exchanger unit HEX, heat exchanger unit feed pipe cc' other end c' The feed pipe of radiator heating loop and the feed pipe ee' of flooring radiation heating loop are connected respectively；

Wherein, heat exchanger unit feed pipe cc' other end c' passes through control valve unit F2 connection flooring radiation heating loops Feed pipe ee'；

The backwater pipe node that the feed pipe of radiator heating loop passes through radiator heating user Us connection radiator heating loops D, the backwater pipe node d of radiator heating loop are divided into 2 tunnels, and one of them is returned by control valve unit F1 connections heat exchanger unit Water pipe a " a；Another passes through the feed pipe ee' of control valve unit F3 connection flooring radiation heating loops, flooring radiation heating ring The feed pipe ee' on road e' ends by the water supply pipe node f of two level net water circulating pump unit P2 connection flooring radiation heating loops, The water supply pipe node f of flooring radiation heating loop after flooring radiation heating user Ud by connecting returning for flooring radiation heating loop Water pipe node a', the backwater pipe node a' of flooring radiation heating loop are divided into 2 tunnels, and one of them passes through the P3 connections of multifunctional pump unit The water supply pipe node e' of flooring radiation heating loop, another connection heat exchanger unit return pipe a " a, heat exchanger unit return pipe A " a a ends pass through two level net water circulating pump unit P1 connection heat exchanger unit backwater pipe node b, heat exchanger unit backwater tube coupling Point b connection heat exchanger units HEX.

A kind of 2. radiator and flooring radiation heating loop cascade heat exchange station system according to claim 1, it is characterised in that One end a of the heat exchanger unit return pipe a " a connects the level pressure equipment of two level net by pipeline.

A kind of 3. heat ladder that heat exchange station system is cascaded using a kind of radiator described in claim 1 and flooring radiation heating loop A kind of level Application way, it is characterised in that heat-exchange method tool of radiator and flooring radiation heating loop cascade heat exchange station system Body process is：

1.1) as the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c', and the confession of radiator heating loop is flowed to from heat exchanger unit water supply pipe node c' Water pipe, the supply water temperature of radiator heating loop is t_s1；Pass through radiator heating user from heat exchanger unit water supply pipe node c' Us reaches the backwater pipe node d of radiator heating loop, and the return water temperature of radiator heating loop is t_s2；Radiator heating loop Backwater the water supply pipe node e of flooring radiation heating loop, flooring radiation heating loop are all flowed to by control valve unit F3 Supply water temperature be t_d1, t_d1=t_s2, flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop Water supply pipe node e', the water supply pipe node f of flooring radiation heating loop is reached by two level net water circulating pump unit P2, from floor The water supply pipe node f of radiant heating loop reaches the backwater tube coupling of flooring radiation heating loop by flooring radiation heating user Ud Point a', the return water temperature of flooring radiation heating loop is t_d2, heat exchange is flowed to from the backwater pipe node a' of flooring radiation heating loop Device unit backwater pipe node a ", heat exchanger unit backwater pipe node a is flowed to from heat exchanger unit backwater pipe node a ", passes through two level Net water circulating pump unit P1 reaches heat exchanger unit backwater pipe node b, and heat exchanger list is flowed to from heat exchanger unit backwater pipe node b First HEX, it is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

1.2) as the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c', and the confession of radiator heating loop is flowed to from heat exchanger unit water supply pipe node c' Water pipe, the supply water temperature of radiator heating loop is t_s1, by reaching radiator heating loop after radiator heating user Us Backwater pipe node d, the backwater pipe node d of radiator heating loop are divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, one of them flows through water supply the pipe node e, flow G that control valve unit F3 reaches flooring radiation heating loop_s2d；

The water supply pipe node e' of flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop, flow is G_s2d；

Flow to after the water supply pipe node e' of flooring radiation heating loop two level net water supply mixing by two level net water circulating pump list First P2 reaches the water supply pipe node f of flooring radiation heating loop, and the supply water temperature of flooring radiation heating loop is t_d1, from floor spoke The water supply pipe node f for penetrating heating loop reaches the backwater tube coupling of flooring radiation heating loop after flooring radiation heating user Ud Point a', the backwater pipe node a' of flooring radiation heating loop are divided into 2 flow directions, and the return water temperature of flooring radiation heating loop is t_d2,

One of flow direction flows to flooring radiation from the backwater pipe node a' of flooring radiation heating loop by multifunctional pump unit P3 Water supply the pipe node e', flow G of heating loop_s- G_s2d；Backwater pipe node of another flow direction from flooring radiation heating loop A' flows to heat exchanger unit backwater pipe node a ", flow G_s2d, pass through control with the backwater pipe node d from radiator heating loop The two level net water supply that valve cell F1 processed reaches heat exchanger unit backwater pipe node a " meets at heat exchanger unit backwater pipe node a ", It is G to converge rear flow_s, heat exchanger unit backwater pipe node a is flowed to from heat exchanger unit backwater pipe node a ", heat exchanger unit returns Water pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, from heat exchanger unit backwater Pipe node b reaches heat exchanger unit HEX, is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

1.3) as the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1, but be greater than The return water temperature t of flooring radiation heating loop_d2；Detailed process is：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' is divided into 2 flow directions, one of flow direction The feed pipe of radiator heating loop, the supply water temperature of radiator heating loop is t_s1, flow G_s；

Another flows through water supply the pipe node e, flow G that control valve unit F2 flows to flooring radiation heating loop_H2d；From The feed pipe of radiator heating loop reaches the backwater pipe node d of radiator heating loop after radiator heating user Us, The backwater pipe node d of radiator heating loop is divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, one of them Flow through control valve unit F1 and reach heat exchanger unit backwater pipe node a ", flow G_H2d；Another flows through control valve Unit F 3 reaches water supply the pipe node e, flow G of flooring radiation heating loop_s- G_H2d；

The water supply pipe node e of flooring radiation heating loop is flowed to by control valve unit F2 from heat exchanger unit water supply pipe node c' Two level net supply water with from radiator heating loop backwater pipe node d pass through control valve unit F3 reach flooring radiation heat ring The water supply pipe node e on road two level net supplies water and mixed to the water supply pipe node e of flooring radiation heating loop, plate radiant heating loop Supply water temperature be t_d1；The water supply tube coupling of flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop Point e', the water supply pipe node f of flooring radiation heating loop is reached by two level net water circulating pump unit P2, heated from flooring radiation The water supply pipe node f of loop reaches the backwater pipe node a' of flooring radiation heating loop after flooring radiation heating user Ud, The return water temperature of flooring radiation heating loop is t_d2, heat exchanger unit is reached from the backwater pipe node a' of flooring radiation heating loop Backwater pipe node a ", flow G_s；Reached and exchanged heat by control valve unit F1 with the backwater pipe node d from radiator heating loop Device unit backwater pipe node a " two level net supplies water and meets at heat exchanger unit backwater pipe node a ", and it is G to converge rear flow_s+ G_H2d；

Heat exchanger unit backwater pipe node a is reached from heat exchanger unit backwater pipe node a ", passes through two level net water circulating pump unit P1 reaches heat exchanger unit backwater pipe node b, and heat exchanger unit HEX is reached from heat exchanger unit backwater pipe node b, is added again Heat is to temperature t_s1Reach heat exchanger unit water supply pipe node c；

2.1) as the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' is divided into 2 flow directions, one of flow direction Water supply the pipe node e, flow G of flooring radiation heating loop are flowed to by control valve unit F2_H2d；

Another flow direction reaches the feed pipe of radiator heating loop, and the supply water temperature of radiator heating loop is t_s1, flow is G_s；The backwater pipe node for passing through radiator heating user Us arrival radiator heating loops from the feed pipe of radiator heating loop D, the return water temperature of radiator heating loop is t_s2；Pass through control valve unit F3 from the backwater pipe node d of radiator heating loop The water supply pipe node e of flooring radiation heating loop is reached, is flowed with heat exchanger unit water supply pipe node c' by control valve unit F2 To the water supply pipe node e of flooring radiation heating loop current mixing, flow is G after mixing_s+G_H2d；

The two level to the water supply pipe node e' of flooring radiation heating loop is flowed to from the water supply pipe node e of flooring radiation heating loop Net supplies water reaches flooring radiation heating loop with the backwater pipe node a' from flooring radiation heating loop by multifunctional pump unit P3 Backwater pipe node e' two level net supply water and mix to the water supply pipe node e' of flooring radiation heating loop, flooring radiation heating ring The supply water temperature on road is t_d1, flow G_d；

Flooring radiation is reached from the water supply pipe node e' of flooring radiation heating loop by two level net water circulating pump unit P2 to heat The water supply pipe node f of loop, floor spoke is reached by flooring radiation heating user Ud from the feed pipe f of flooring radiation heating loop The return pipe a' of heating loop is penetrated, the return pipe a' of flooring radiation heating loop is divided into 2 flow directions, flooring radiation heating user Ud Return water temperature be t_d2, one of them flows through the feed pipe e' that multifunctional pump unit P3 reaches flooring radiation heating loop, stream Measure as G_d- G_s- G_H2d；

Another flow direction flows to heat exchanger unit return pipe a ", flow G from the return pipe a' of flooring radiation heating loop_s+G_H2d,

From heat exchanger unit return pipe a " to heat exchanger unit return pipe a, reached and exchanged heat by two level net water circulating pump unit P1 Device unit return pipe b, heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, is reheated to temperature t_s1Reach heat exchange Device unit water supply pipe node c；

2.2) as the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' flows to the water supply of radiator heating loop Pipe, the supply water temperature of radiator heating loop is t_s1, by reaching returning for radiator heating loop after radiator heating user Us Water pipe node d, the backwater pipe node d of radiator heating loop are divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, one of them flows through water supply the pipe node e, flow G that control valve unit F3 reaches flooring radiation heating loop_s2d；

There are 2 to flow to the water supply pipe node e' for meeting at flooring radiation heating loop, one of flow direction heats from flooring radiation The water supply pipe node e of loop flows to water supply the pipe node e', flow G of flooring radiation heating loop_s2d；Another is flowed to from ground The backwater pipe node a' of plate radiant heating loop flows to the water supply pipe node of flooring radiation heating loop by multifunctional pump unit P3 E', flow G_d- G_s2d；

The water supply pipe node f of flooring radiation heating loop, floor are reached after current mixing by two level net water circulating pump unit P2 The supply water temperature of radiant heating loop is t_d1, the water supply pipe node f of flooring radiation heating loop is by flooring radiation heating user The backwater pipe node a' that flooring radiation heating loop is reached after Ud is divided into 2 flow directions, the return water temperature of flooring radiation heating loop For t_d2, one of them flows to from the backwater pipe node a' of flooring radiation heating loop and flows to flooring radiation by multifunctional pump unit P3 Water supply the pipe node e', flow G of heating loop_d- G_s2d；Backwater pipe node of another flow direction from flooring radiation heating loop A' flows to heat exchanger unit backwater pipe node a ", flow G_s2d, pass through control with the backwater pipe node d from radiator heating loop The flow direction that valve cell F1 processed reaches heat exchanger unit backwater pipe node a " meets at heat exchanger unit backwater pipe node a ", after converging Flow is G_s, from heat exchanger unit backwater pipe node a " to heat exchanger unit backwater pipe node a, heat exchanger unit backwater pipe node A by two level net water circulating pump unit P1 reach heat exchanger unit backwater pipe node b, from heat exchanger unit backwater pipe node b to Up to heat exchanger unit HEX, it is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' reaches the water supply of radiator heating loop Pipe, the supply water temperature of radiator heating loop is t_s1；The feed pipe of radiator heating loop is arrived by radiator heating user Us Up to the backwater pipe node d of radiator heating loop, the return water temperature of radiator heating loop is t_s2；Radiator heating loop returns Water pipe node d reaches the water supply pipe node e of flooring radiation heating loop by control valve unit F3, flooring radiation heating loop Water supply pipe node e flows to the water supply pipe node e' of flooring radiation heating loop；

The backwater pipe node a' of flooring radiation heating loop also reaches the confession of flooring radiation heating loop by multifunctional pump unit P3 Water pipe node e', flow G_d- G_s；

The flow direction of water supply pipe node e' from the water supply pipe node e of flooring radiation heating loop to flooring radiation heating loop and ground The backwater pipe node a' of plate radiant heating loop reaches the backwater pipe node of flooring radiation heating loop by multifunctional pump unit P3 E' flow direction is mixed to the water supply pipe node e' of flooring radiation heating loop, and the supply water temperature of flooring radiation heating loop is t_d1, Flow is G_d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation heating ring by two level net water circulating pump unit P2 The water supply pipe node f on road, the feed pipe f of flooring radiation heating loop reach flooring radiation by flooring radiation heating user Ud The return pipe a' of heating loop is divided into 2 flow directions, and flooring radiation heating user Ud return water temperature is t_d2, one of them flows to logical Overmulling pump unit P3 reaches the feed pipe a', flow G of flooring radiation heating loop_d- G_s；Another is flowed to from flooring radiation The return pipe a' of heating loop flows to heat exchanger unit return pipe a ", flow G_s, from heat exchanger unit return pipe a " to heat exchange Device unit return pipe a, heat exchanger unit return pipe a reach heat exchanger unit return pipe b by two level net water circulating pump unit P1, Heat exchanger unit HEX is reached from heat exchanger unit feed pipe b, is reheated to temperature t_s1Reach heat exchanger unit water supply tube coupling Point c；

2.2.3) as the return water temperature t of radiator heating loop_s2Meet relationWhen, specific mistake Cheng Wei：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit water supply tube coupling Point c reaches heat exchanger unit water supply pipe node c' and is divided into 2 flow directions, and one of them flows through control valve unit F2 and flows to floor Water supply the pipe node e, flow G of radiant heating loop_H2d；

Another flow direction reaches the feed pipe of radiator heating loop, and the supply water temperature of radiator heating loop is t_s1, flow is G_s；The feed pipe of radiator heating loop reaches the backwater pipe node d of radiator heating loop by radiator heating user Us, The return water temperature of radiator heating loop is t_s2；The backwater pipe node d of radiator heating loop is reached by control valve unit F3 The water supply pipe node e of flooring radiation heating loop, flow to ground by control valve unit F2 with heat exchanger unit water supply pipe node c' The water supply pipe node e of plate radiant heating loop two level net, which supplies water, to be mixed, and flow is G after mixing_s+G_H2d；

Flooring radiation heating loop is also reached by multifunctional pump unit P3 from the backwater pipe node a' of flooring radiation heating loop Water supply pipe node e', flow G_d- G_s- G_H2d；

The flow direction of water supply pipe node e' from the water supply pipe node e of flooring radiation heating loop to flooring radiation heating loop and ground The backwater pipe node a' of plate radiant heating loop reaches the backwater pipe node of flooring radiation heating loop by multifunctional pump unit P3 The supply water temperature that e' flow direction is mixed to flooring radiation heating user Ud is t_d1, flow G_d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation heating ring by two level net water circulating pump unit P2 The water supply pipe node f on road, the feed pipe f of flooring radiation heating loop reach flooring radiation by flooring radiation heating user Ud and supplied The return pipe a' of warm loop, the return pipe a' of flooring radiation heating loop are divided into 2 flow directions, and flooring radiation heating user Ud's returns Coolant-temperature gage is t_d2, one of them flows through the feed pipe a' that multifunctional pump unit P3 reaches flooring radiation heating loop, and flow is G_d- G_s- G_H2d；Another flow direction flows to heat exchanger unit return pipe a ", flow from the return pipe a' of flooring radiation heating loop For G_s+G_H2d, pass through two level net from heat exchanger unit return pipe a " to heat exchanger unit return pipe a, heat exchanger unit return pipe a Water circulating pump unit P1 reaches heat exchanger unit return pipe b, reaches heat exchanger unit HEX from heat exchanger unit feed pipe b, is weighed Newly it is heated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

2.3) as the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1When, specific mistake Cheng Wei：

The flow direction of water supply pipe node e' from the water supply pipe node e of flooring radiation heating loop to flooring radiation heating loop and ground The backwater pipe node a' of plate radiant heating loop reaches the backwater pipe node of flooring radiation heating loop by multifunctional pump unit P3 It is t that e' flow direction, which is mixed to the supply water temperature of flooring radiation heating loop,_d1, flow G_d；

The water supply pipe node e' of flooring radiation heating loop reaches flooring radiation heating ring by two level net water circulating pump unit P2 The water supply pipe node f on road, the feed pipe f of flooring radiation heating loop reach flooring radiation by flooring radiation heating user Ud and supplied The return pipe a' of warm loop, the return pipe a' of flooring radiation heating loop are divided into 2 flow directions, the backwater of flooring radiation heating loop Temperature is t_d2, one of them flows through the feed pipe a' that multifunctional pump unit P3 reaches flooring radiation heating loop, and flow is G_d- G_s- G_H2d；Another flow direction flows to heat exchanger unit return pipe a ", flow from the return pipe a' of flooring radiation heating loop For G_s+G_H2d, pass through two level net from heat exchanger unit return pipe a " to heat exchanger unit return pipe a, heat exchanger unit return pipe a Water circulating pump unit P1 reaches heat exchanger unit return pipe b, reaches heat exchanger unit HEX from heat exchanger unit feed pipe b, is weighed Newly it is heated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

3.1) the return water temperature t of radiator heating loop_s2Equal to the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

Two level net supplies water reaches heat exchanger unit water supply pipe node c by heat exchanger unit HEX, from heat exchanger unit feed pipe Node c reaches heat exchanger unit water supply pipe node c', and heat exchanger unit water supply pipe node c' flows to the confession of radiator heating loop Water pipe, the supply water temperature of radiator heating loop is t_s1, flow G_s；

The feed pipe of radiator heating loop reaches the backwater tube coupling of radiator heating loop after radiator heating user Us Point d is divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, one of them flows through control valve unit F1 arrival Heat exchanger unit backwater pipe node a ", flow G_s- G_d；Another flows through control valve unit F3 and reaches flooring radiation heating Water supply the pipe node e, flow G of loop_d, flooring radiation heating ring is flowed to from the water supply pipe node e of flooring radiation heating loop The water supply pipe node e' on road, the water supply pipe node f of flooring radiation heating loop, ground are reached by two level net water circulating pump unit P2 The water supply pipe node f of plate radiant heating loop reaches the backwater of flooring radiation heating loop after flooring radiation heating user Ud Pipe node a', the return water temperature of flooring radiation heating loop is t_d2, the backwater pipe node a' of flooring radiation heating loop, which is reached, to be changed Hot device unit backwater pipe node a ", heat exchanger unit backwater pipe node a " reach heat exchanger unit backwater pipe node a, heat exchanger list First backwater pipe node a reaches heat exchanger unit backwater pipe node b by two level net water circulating pump unit P1, is returned from heat exchanger unit Water pipe node b reaches heat exchanger unit HEX, is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c；

3.2) the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

The water supply tube coupling of flooring radiation heating loop is reached after the current mixing of 2 flow directions by two level net water circulating pump unit P2 Point f, the supply water temperature of flooring radiation heating loop is t_d1, the water supply pipe node f of flooring radiation heating loop passes through flooring radiation The backwater pipe node a', the backwater pipe node a' of flooring radiation heating loop of flooring radiation heating loop are reached after heating user Ud It is divided into 2 flow directions, the return water temperature of flooring radiation heating loop is t_d2, it is one of to flow to from flooring radiation heating loop Backwater pipe node a' flows to water supply the pipe node e', flow G of flooring radiation heating loop by multifunctional pump unit P3_d- G_s2d； Another flow direction flows to heat exchanger unit backwater pipe node a " from the backwater pipe node a' of flooring radiation heating loop, and flow is G_s2d, heat exchanger unit backwater pipe node a " is reached by control valve unit F1 with the backwater pipe node d from radiator heating loop Flow direction meet at heat exchanger unit backwater pipe node a ", it is G to converge rear flow_s, from heat exchanger unit backwater pipe node a " to Heat exchanger unit backwater pipe node a, heat exchanger unit backwater pipe node a reach heat exchanger by two level net water circulating pump unit P1 Unit backwater pipe node b, heat exchanger unit HEX is reached from heat exchanger unit backwater pipe node b, is reheated to temperature t_s1Arrive Up to heat exchanger unit water supply pipe node c；

3.3) the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1；Detailed process For：

Another flows through water supply the pipe node e, flow G that control valve unit F2 flows to flooring radiation heating loop_H2d；

The feed pipe of radiator heating loop reaches the backwater tube coupling of radiator heating loop after radiator heating user Us Point d, the backwater pipe node d of radiator heating loop are divided into 2 flow directions, and the return water temperature of radiator heating loop is t_s2, wherein One flows through control valve unit F1 and reaches heat exchanger unit backwater pipe node a ", flow G_s- G_d+G_H2d；

Another flows through water supply the pipe node e, flow G that control valve unit F3 reaches flooring radiation heating loop_d- G_H2d；

The water supply pipe node e of flooring radiation heating loop is flowed to by control valve unit F2 from heat exchanger unit water supply pipe node c' Flow direction with from radiator heating loop backwater pipe node d pass through control valve unit F3 reach flooring radiation heating loop confession It is t that water pipe node e flow direction, which is mixed to the supply water temperature of flooring radiation heating loop,_d1；From the water supply of flooring radiation heating loop Pipe node e flows to the water supply pipe node e' of flooring radiation heating loop, and floor spoke is reached by two level net water circulating pump unit P2 The water supply pipe node f of heating loop is penetrated, the water supply pipe node f of flooring radiation heating loop is after flooring radiation heating user Ud The backwater pipe node a' of flooring radiation heating loop is reached, the return water temperature of flooring radiation heating loop is t_d2, flooring radiation confession The backwater pipe node a' of warm loop reaches heat exchanger unit backwater pipe node a ", flow G_d；With from radiator heating loop The flow direction that backwater pipe node d reaches heat exchanger unit backwater pipe node a " by control valve unit F1 meets at heat exchanger unit time Water pipe node a ", it is G to converge rear flow_s+G_H2d；

Heat exchanger unit backwater pipe node a " reaches heat exchanger unit backwater pipe node a, and heat exchanger unit backwater pipe node a passes through Two level net water circulating pump unit P1 reaches heat exchanger unit backwater pipe node b, reaches and exchanges heat from heat exchanger unit backwater pipe node b Device unit HEX, it is reheated to temperature t_s1Reach heat exchanger unit water supply pipe node c.

A kind of 4. heat step profit of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 3 With method, it is characterised in that described as the flow G of radiator heating loop_sEqual to the flow G of flooring radiation heating loop_dWhen, Detailed process is：

Flow is G_s- G_s2dFor：

A kind of 5. heat step profit of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 4 With method, it is characterised in that described as the flow G of radiator heating loop_sEqual to the flow G of flooring radiation heating loop_dWhen, Detailed process is：

As the return water temperature t of radiator heating loop_s2Less than the supply water temperature t of flooring radiation heating loop_d1, but it is greater than floor The return water temperature t of radiant heating loop_d2When, flow G_H2dFor：

Flow G_s- G_H2dFor：

Flow G_s+G_H2dFor：

A kind of 6. heat step profit of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 5 With method, it is characterised in that described as the flow G of radiator heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, Detailed process is：

Flow G after mixing_s+G_H2dFor：

Flow G_d- G_s- G_H2dFor：

A kind of 7. heat step profit of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 6 With method, it is characterised in that described as the flow G of radiator heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, Detailed process is：

As the return water temperature t of radiator heating loop_s2More than the supply water temperature t of flooring radiation heating loop_d1When, it is divided into following feelings Condition：

Flow G_s- G_s2dFor：

Flow G_d- G_s2dFor：

As the return water temperature t of radiator heating loop_s2Meet relationWhen, flow G_H2dFor：

Flow G after mixing_s+G_H2dFor：

Flow G_d- G_s- G_H2dFor：

A kind of 8. heat step profit of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 7 With method, it is characterised in that described as the flow G of radiator heating loop_sLess than the flow G of flooring radiation heating loop_dWhen, Detailed process is：

Flow G after mixing_s+G_H2dFor：

Flow G_d- G_s- G_H2dFor：

A kind of 9. heat step profit of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 8 With method, it is characterised in that described as the flow G of radiator heating loop_sMore than the flow G of flooring radiation heating loop_dWhen, Detailed process is：

Flow G_s- G_s2dFor：

Flow G_d- G_s2dFor：

A kind of 10. heat step of radiator and flooring radiation heating loop cascade heat exchange station system according to claim 9 Application way, it is characterised in that described as the flow G of radiator heating loop_sMore than the flow G of flooring radiation heating loop_d When, detailed process is：

Flow G_s- G_d+G_H2dFor：

Flow G_d- G_H2dFor：

Converge rear flow G_s+G_H2dFor：