CN102261691B - Power transmission system of multi-heat source loop pipe network, system configuration method and operation mode - Google Patents

Abstract

The invention discloses a power transmission system of a multi-heat source loop pipe network, a system configuration method and an operation mode. One or more sets of fixed speed circulation pumps which are same in rated flow and different in rated lift are respectively arranged at various types of heat sources. When more sets of fixed speed circulation pumps are arranged, a plurality of sets of circulation water pumps which are same in rated flow and different in rated lift are installed in parallel; corresponding sets of circulation water pumps are operated under various types of working conditions; the set number corresponds with the number of operation working conditions of the heat sources; and a flow control valve capable of quantitatively controlling flow is arranged at each user place. By means of the heat sources operating under various types of operation working conditions, the circulation water pumps corresponding to the operation working conditions are started respectively; the conveying capacity of the pipe network and the operation effect of the pipe network under various types of normal operation working conditions are ensured; and the electric energy consumption of the power transmission system is reduced.

Description

Many thermals source looping network power induction system, ' In System Reconfiguration Method and the method for operation

Technical field

The present invention relates to central heating system, especially many thermals source looping network central heating system.

Background technology

In central heating system, the power induction system provides transmitting power for the circulation heating agent.The power induction system mainly comprises the control device of water circulating pump, water pump import and export pipeline, valve, annex and water pump etc.Whether the configuration of power induction system is reasonable, to performance driving economy and the security reliability generation material impact of heating system operation.

Pipe network structure and the method for operation of many thermals source looping network heating system have following characteristics: (1) main pipeline network is comprised of one or more looping networks.(2) have a plurality of thermals source, each thermal source all arranges corresponding power induction system.(3) the power induction system of a plurality of thermals source of operation interacts.(4) at whole Heating Season, the thermal source that puts into operation and affiliated power induction system thereof drop into according to certain rules or are out of service.

The power induction system of many thermals source looping network, collocation method and the method for operation of the dendritic net power of the single thermal source of present more employing induction system.Its concrete grammar is: divide the thermal region that supplies of each thermal source, many thermals source looping network is decomposed into a plurality of single thermal source branched networks; Flow and the resistance of thermal source branched network single according to each design the power induction system of each thermal source.

The power induction system of the many thermals source looping network that arranges according to the method described above, when the quantity of operation thermal source changes, due to changing for thermal region of operation thermal source, its conveying capacity often can not satisfy the requirement of certain customers, thereby causes the heating effect of certain customers relatively poor.Therefore, the many thermals source looping network that has moved at present, in order to guarantee heating effect, mostly adopt the parallel off method of operation (between the terminal temperature difference of adjacent thermal source, shut-off valve to be set, many thermals source looping network is decomposed into a plurality of single thermal source branched networks, all thermals source all are in running status at whole Heating Season), cause the superiority of many thermals source looping network to be not in full use.

Therefore, power induction system and the method for operation thereof by many thermals source of reasonable disposition looping network, the heating effect that guarantees many thermals source looping network all users under various operating conditions all can meet the demands, and is very important for the operation of many thermals source looping network.

With the immediate prior art of the present invention be at " HVAC " the 32nd the 6th phase of volume in 2002 disclosed " many thermals source looped network heat supply process " literary composition.Several technology that arrange about many thermals source looping network power induction system below disclosing in this article:

(1) water circulating pump of each thermal source power induction system should be selected variable frequency pump.When operating mode changes, the water circulating pump converting operation, its flow and lift all change.

(2) each thermal source power induction system can select respectively several different models constant speed pump as the circulating pump under different operating modes.The water circulating pump of same thermal source under different operating modes should have different flows.

(3) the recirculated water pump lift of each thermal source power induction system should be substantially close, and flow should be determined according to the operating condition that each thermal source is born.

Above technical measures all propose, under different operating conditions, and the power induction system of the same thermal source of many thermals source looping network, its water circulating pump should have different operating fluxes.

But, a considerable advantage of many thermals source looping network heating system, preferentially to move the thermal source that heat cost is low, operational efficiency is high, reach maximum heat capacity and work as heat cost thermal source low, that operational efficiency is high, in the time of still burden requirement can not being satisfied, then move successively the thermal source that heat cost is relatively high or operational efficiency is relatively low.This thermal source that is to say, if in the whole operation that participates in simultaneously several operating modes for warm season, under these several operating modes, all might reach its specified heat capacity to some thermals source (such as base-load heat source or adjusting thermal source).Therefore, the flow of the water circulating pump under same thermal source all can satisfy the specified heat capacity requirement of this thermal source under various operating conditions, and namely under different operating conditions, same thermal source water circulating pump when reaching its specified heat capacity should have identical flow.Simultaneously, due to many thermals source looping network complex structure, thermal source and power induction system thereof interact, and the quantitative analysis difficulty of hydraulic regime is very large.For the quantitative analysis that guarantees its hydraulic regime can be carried out, and the workload of minimizing network hydraulic operation state quantitative analysis, many thermals source looping network should have definite flow under each operating condition.Reason in view of above two aspects, for many thermals source looping network heating system, the water circulating pump of same thermal source under various different operating conditions should have identical flow, and the water circulating pump of each thermal source all should adopt " constant flow " method of operation under each operating condition.

Recirculated water pump lift under the power induction system of many thermals source looping network is the specified heat capacity by this thermal source, and the factors such as the structure of the heating range of this thermal source and this heating range pipe network and hydraulic condition are determined jointly.Under different operating conditions, the heating range of this thermal source, the pipe network structure of this scope and hydraulic condition all will change.Therefore, under different operating conditions, the recirculated water pump lift under the power induction system of the thermal source of operation must be determined according to the hydraulic regime analysis result of concrete operating mode.

And adopt technical measures in above-mentioned document, will cause part of heat energy to drop into or when out of service, the feed flow of the water circulating pump under the operation thermal source can not be complementary with the heat capacity of thermal source, the recirculated water pump lift can not be complementary with its heating range, thereby cause the heat capacity of part of heat energy not take full advantage of, the overload operation and part of heat energy is had to has affected security reliability and the economy of many thermals source looping network.

Summary of the invention

The objective of the invention is to overcome above-mentioned technology and cause many thermals source looping network heating system conveying capacity can not adapt to the shortcoming that the operation number of heat source changes, by technological improvement, provide a kind of power induction system of many thermals source looping network.This power induction system makes its conveying capacity can satisfy the confession heat request of many thermals source looping network under different operating conditions mainly by reasonable disposition water circulating pump and operation regulative mode thereof, guarantees the normal operation of many thermals source looping network heating system.

For achieving the above object, system of the present invention mainly comprises pipeline, annex and the pump control unit that is arranged on each thermal source place, it is characterized in that, the place also is respectively arranged with the constant speed circulating pump that one or more sets metered flows are identical, rated head is different at each thermal source; When many covers arranged, many covers water circulating pump that metered flow is identical, rated head is different was installed in parallel, and moved a corresponding with it cover under every kind of operating mode; Require the tricks of setting corresponding with the operating condition number of this thermal source; Locate to be provided with each user the flow control valve that can quantitatively control flow.

The collocation method of system of the present invention is as follows

The first step is determined the water circulating pump tricks that each thermal source place arranges

At first divide the operating condition of many thermals source looping network heating system, and the order that puts into operation of definite thermal source.Such as three thermal source looping networks can be divided into base regime, regulate operating mode and three kinds of different operating modes of peak regulation operating mode; Perhaps be divided into base regime and two peak regulation operating modes.Under base regime, only have base-load heat source to put into operation; Regulate under operating mode, only have base-load heat source and regulate thermal source and put into operation; Under the peak regulation operating mode, base-load heat source, adjusting thermal source and peak adjusting heat source all put into operation.For four thermal source looping networks, can be different according to the order that puts into operation of thermal source, three kinds of operating conditions or four kinds of operating conditions can be set.If three kinds of operating conditions are set, when operating condition changes, have that two thermals source drop into simultaneously or out of service; If four kinds of operating conditions are set, four thermals source put into operation by a graded respectively or are out of service.

On operating condition and thermal source put the basis that order divides into operation, determine the water circulating pump tricks that arranges at each thermal source place to require the tricks of water circulating pump corresponding with the operating condition number of this thermal source participation;

Second step: determine each thermal source place water circulating pump metered flow

The circulating pump of same thermal source under different operating modes has identical metered flow, and its flow is all determined by following formula:

$G=(1.05~1.15)\frac{860Q}{\mathrm{\&rho;}(t_g-t_h)}{\mathrm{<figure-callout\; id="3"\; label="m"\; filenames="HSA00000512711500021.png"\; state="\{\{state\}\}">m</figure-callout>}}^3/h$ In formula:

The metered flow of G---certain thermal source, m ³/ h;

The rated heating capacity of Q---certain thermal source, kW;

ρ---the density of water under specified return water temperature, kg/m ³

t _g, t _h---the specified confession of thermal source or heating network, return water temperature, ℃.

The 3rd step: determine thermal source place circulating pump head

The flow of the water circulating pump of same thermal source under different operating conditions is identical, but lift is different.Its lift should be according to many thermals source looping network the actual hydraulic condition under different operating conditions, determine by analytical calculation.Concrete definite method is:

(1) at first many thermals source looping network is decomposed into for water ring net and backwater looped network, respectively selected pressure reference point for water ring net and backwater looped network.The pressure reference point should be selected the confession backwater network access node of same thermal source.

(2) select a certain operating mode as design condition, determine for water ring net and the metered flow of each node of backwater looped network under this operating mode, and use matrix notation:

${\stackrel{\&OverBar;}{q}}_G={[q_{1G},q_{2G},\&CenterDot;\&CenterDot;\&CenterDot;{,q}_{\mathrm{mG}}]}^T$ And ${\stackrel{\&OverBar;}{q}}_H={[q_{1H},q_{2H},\&CenterDot;\&CenterDot;\&CenterDot;{,q}_{\mathrm{mH}}]}^T$

(3) respectively according to the metered flow matrix for, each node of return pipe net, calculative determination for, each node of return pipe net with respect to the node pressure drop matrix of pressure reference point separately.

${\stackrel{\&OverBar;}{p}}_G={[p_{1G},p_{2G},\&CenterDot;\&CenterDot;\&CenterDot;{,p}_{\mathrm{mG}}]}^T$ And ${\stackrel{\&OverBar;}{p}}_H={[p_{1H},p_{2H},\&CenterDot;\&CenterDot;\&CenterDot;{,p}_{\mathrm{mH}}]}^T$

(4) according to the node pressure drop of water supply node and backwater node, determine the hot user of least favorable of many thermals source looping network, its least favorable user must satisfy following relationship:

Δp _J＝p _JG-p _JH＝max(p _iG-p _iH) i＝1，2，…，m

P in formula _JG---the water supply looped network node pressure drop of the hot user J of least favorable, mH ₂O；

p _JH---the backwater looped network node pressure drop of the hot user J of least favorable, mH ₂O；

M---many thermals source looping network node (comprising thermal source node and user node) number.

(5) determine respectively the pressure matrix of confession, each node of backwater looped network.

Set the minimum pressure Δ p of the hot user J of least favorable _J=Δ p ₀(Δ p ₀Minimum of a value for the required available pressure of the hot user security heat supply of regulation and stipulation), pressurization point is located on the backwater looped network node of benchmark thermal source, and its level pressure value is p ₀The pressure matrix of confession, each node of backwater looped network is:

${\stackrel{\&OverBar;}{p}}_G^{\&prime;}=[p_0+{\mathrm{\&Delta;p}}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-p_{1G},p_0+{\mathrm{\&Delta;p}}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-p_{2G},$

$\&CenterDot;\&CenterDot;\&CenterDot;,p_0+{\mathrm{\&Delta;p}}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-p_{\mathrm{mG}}{]}^T$

${\stackrel{\&OverBar;}{p}}_H^{\&prime;}={(p_0-p_{1H},p_0-p_{2H},\&CenterDot;\&CenterDot;\&CenterDot;,p_0-p_{\mathrm{mH}})}^T$

(6) the pressure reduction matrix between definite confession, each corresponding node of backwater looped network (comprising thermal source and hot user).

$\mathrm{\&Delta;}\stackrel{\&OverBar;}{p}={\stackrel{\&OverBar;}{p}}_G^{\&prime;}-{\stackrel{\&OverBar;}{p}}_H^{\&prime;}$

$=({\mathrm{\&Delta;p}}_1,{\mathrm{\&Delta;p}}_2,\&CenterDot;\&CenterDot;\&CenterDot;,{\mathrm{\&Delta;p}}_i,\&CenterDot;\&CenterDot;\&CenterDot;)$

$=[{\mathrm{\&Delta;p}}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-(p_{1G}-p_{1H}),{\mathrm{\&Delta;p}}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-(p_{2G}-p_{2H}),\&CenterDot;\&CenterDot;\&CenterDot;,$

${\mathrm{\&Delta;p}}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-(p_{\mathrm{mG}}-p_{\mathrm{mG}}){]}^T$

(7) determine the lift of each heat-source Cycles water pump under this operating mode.

The thermal source node that moves under this operating mode can be according to the sign determination of its looped network node flow that supplies water.If water supply network node flow Q _iG＜0, the user that this node is corresponding must be thermal source.Therefore, the opinion lift of the water circulating pump under the thermal source that moves under this operating mode can be determined by following formula:

H _rk＝Δp ₀+(p _JG-p _JH)-(p _iG-p _iH)+H ₀ k＝1，2，…，M

H in formula _rk---the lift of k heat-source Cycles water pump, mH ₂O；

p _iG---the node pressure drop of the water supply looped network node that the k thermal source is corresponding, mH ₂O；

p _iH---the node pressure drop of the backwater looped network node that the k thermal source is corresponding, mH ₂O；

H ₀---the drag losses of thermal source inside under theoretical flow, can be by regulation and stipulation value, mH ₂O。

M---the number of operation thermal source under this operating mode.

(8) lift of each heat-source Cycles water pump under other operating condition determined in repeating step (2)～(7).

The 4th step: water circulating pump is set

The water circulating pump tricks corresponding according to each thermal source of determining, metered flow and the recirculated water pump lift of water circulating pump, the constant speed circulating pump that metered flow is identical, rated head is different and the corresponding corollary apparatus (corollary apparatus comprises pipeline, annex and control device) of corresponding tricks are set at each thermal source place, and overlapping water circulating pump should be arranged in parallel more; And locate to arrange flow control valve each user.Such as three thermal source looping networks, at the base-load heat source place, corresponding to base regime, adjusting operating mode and three kinds of different operating conditions of peak regulation operating mode, three cover metered flows are set respectively identical, water circulating pump and corresponding corollary apparatus that rated head is different; At adjusting thermal source place, corresponding to base regime and adjusting operating mode, two water circulating pump and the corresponding corollary apparatus that the cover metered flow is identical, rated head is different are set respectively; At the peak adjusting heat source place, corresponding to the peak regulation operating mode, cover water circulating pump and a corresponding corollary apparatus is set;

When the rated head of water circulating pump under several different operating modes of a certain thermal source is more or less the same in 5mH ₂During O, in order to reduce investment outlay, this thermal source can be merged into a cover (namely all adopting same set of power conveying device under above-mentioned operating mode) at water circulating pump and the corollary apparatus thereof of above-mentioned several operating modes.

Advantage of the present invention is:

(1) thermal source that moves under various operating conditions is enabled respectively and the corresponding water circulating pump of this operating condition, has guaranteed conveying capacity and the operational effect of pipe network under various accidental conditions of pipe network, and reduces the power consumption of power induction system.

(2) method that proposes according to the present invention arranges circulating pump, can adopt " start corresponding water circulating pump when operating condition changes; and all adopt constant flow matter to regulate under every kind of operating condition " the operation regulative mode, guaranteed certainty and the stability of network hydraulic operation state.

(3) under every kind of operating condition, the thermal source of many thermals source looping network and all heat can be carried out quantitative analysis to its heating effect with per family definite flow being arranged, for operational management and the adjusting of pipe network provides theoretical foundation.

Description of drawings

Fig. 1 is the schematic diagram of many thermals source of the present invention looping network power induction system embodiment, in figure take three thermals source as example;

Fig. 2 is many thermals source looping network network structure.

In Fig. 1: the 1-base-load heat source, 2-regulates thermal source, the 3-peak adjusting heat source, the hot user of 4-, 5-base regime circulating pump (base-load heat source), 6-regulates Operation mode cycle pump (base-load heat source), 7-peak regulation Operation mode cycle pump (base-load heat source), 8-regulates Operation mode cycle pump (adjusting thermal source), 9-peak regulation Operation mode cycle pump (adjusting thermal source), 10-peak regulation Operation mode cycle pump (peak adjusting heat source), 11-small pump (base-load heat source), 12-small pump (adjusting thermal source), 13-small pump (peak adjusting heat source), 14-flow control valve.

In Fig. 2: digital J1-J17 represents node serial number; G1-G19 represents the pipeline section label.

The specific embodiment

Below in conjunction with accompanying drawing and workflow of the present invention, its specific embodiment is described.

As shown in Figure 1, power induction system of the present invention comprises base-load heat source 1, the power induction system of regulating thermal source 2 and peak adjusting heat source 3; As can be seen from Figure 1, be provided with at base-load heat source 1 place base regime circulating pump 5, regulate Operation mode cycle pump 6 and peak regulation Operation mode cycle pump 7 and corresponding pipeline, valve, annex and control system (not shown in FIG.); 2 places are provided with adjusting Operation mode cycle pump 8, peak regulation Operation mode cycle pump 9 and corresponding pipeline, valve, annex and control system at the adjusting thermal source; 3 places are provided with peak regulation Operation mode cycle pump 10 and corresponding pipeline, valve, annex and control system at peak adjusting heat source.At base-load heat source 1, regulate thermal source 2 and peak adjusting heat source 3 places are provided with respectively small pump 11,12 and 13.Be provided with flow control valve 14 at each user 4 places.

The below illustrates collocation method of the present invention with the example that is configured to of the power induction system of three thermal source looping networks shown in Fig. 1.

A certain many thermals source looping network heating system, pipe network comprise three thermals source and ten hot users (heat exchange station), under base regime, only have thermal source 1 to put into operation; Regulating under operating mode thermal source 1 and thermal source 2 cooperations; Under the peak regulation operating mode, thermal source 1, thermal source 2 and thermal source 3 all put into operation.This many thermals source looping network network structure as shown in Figure 2.As can be seen from Figure 2, thermal source 1 networks from node J17, and thermal source 2 networks from node J9, and thermal source 3 networks from node J11.Caliber and the pipe range of the pipeline section G1-G19 of this many thermals source looping network see Table 1; The metered flow of pipe network node J1-J17 under three kinds of operating modes sees Table 2.

The caliber of each pipeline section of table 1 pipe network (supply water, the corresponding pipeline section caliber of backwater identical)

Node metered flow under three kinds of operating modes of table 2

The below is by the method to set up of the power induction system of the present invention's introduction, and the power induction system configuration of this many thermals source looping network is as follows:

Base-load heat source 1 participates in three kinds of operating conditions, calculates the configuration parameter of three kinds of power induction systems under operating mode: under base regime, and metered flow Q=294m ³/ h, rated head H=85mH ₂O； Regulate under operating mode metered flow Q=294m ³/ h, rated head H=68mH ₂O； Under the peak regulation operating mode, metered flow Q=294m ³/ h, rated head H=48mH ₂O。

Regulate thermal source 2 and participate in two kinds of operating conditions, calculate the configuration parameter of two kinds of power induction systems under operating mode: regulate under operating mode metered flow Q=214m ³/ h, rated head H=58mH ₂O； Under the peak regulation operating mode, metered flow Q=214m ³/ h, rated head H=80mH ₂O。

3 of peak adjusting heat sources participate in the operations of peak regulation operating modes, calculate the configuration parameter of the power induction system under this operating mode: metered flow Q=198m ³/ h, rated head H=76mH ₂O。

On each user's water supply branched pipe, flow control valve is set respectively.

The method of operation of the power induction system of many thermals source of the present invention looping network is as follows:

Under base regime, only move base-load heat source and the power induction system under base regime thereof, simultaneously the aperture of the hot customer flow control valve of the setting of the metered flow under base regime according to each user;

Under the adjusting operating mode, only move base-load heat source and regulate thermal source, and moving respectively their in the power induction system of regulating under operating mode, setting simultaneously the aperture of hot customer flow control valve according to the metered flow of each user under the adjusting operating mode.If many thermals source looping network has a plurality of different adjusting thermals source, and a plurality of adjusting thermal source drops into according to certain order according to the situation of change of thermic load or out of service, and the adjusting operating mode of this pipe network can be divided into a plurality of adjusting operating modes.Under the different adjustment operating mode, operation is regulated operating mode corresponding thermal source and power induction system with this respectively.

Under the peak regulation operating mode, base-load heat source, all adjusting thermals source and peak adjusting heat source all put into operation, and move respectively they under the peak regulation operating mode the power induction system, simultaneously the metered flow under the peak regulation operating mode is set the aperture of hot customer flow control valve according to each user.

Under each operating condition, adopt respectively the method for operation of constant flow, rely on the load variations of regulating heat medium temperature (matter adjusting) adaptive system.

The restriction of determining not to be subjected to embodiment of the division of operating mode of the present invention and thermal source, those skilled in the art can in the light of actual conditions divide operating mode and definite thermal source.

Claims (4)

1. the power of thermal source looping network more than kind induction system, mainly comprise the pipeline, annex and the pump control unit that are arranged on each thermal source place, it is characterized in that, the place also is respectively arranged with the constant speed water circulating pump that one or more sets metered flows are identical, rated head is different at each thermal source; When many covers arranged, many covers water circulating pump that metered flow is identical, rated head is different was installed in parallel, and moved a corresponding with it cover under every kind of operating mode, required the tricks of setting corresponding with the operating condition number of this thermal source; Locate to be provided with each user the flow control valve that can quantitatively control flow.

2. the collocation method of many thermals source looping network power induction system as claimed in claim 1, is characterized in that, step is as follows:

The first step is determined the water circulating pump tricks that each thermal source place arranges

At first divide the operating condition of many thermals source looping network heating system, and the order that puts into operation of definite thermal source, on operating condition and thermal source put the basis that order divides into operation, determine the water circulating pump tricks in each thermal source place's setting, require the tricks of water circulating pump corresponding with the operating condition number that this thermal source participates in;

Second step: determine each thermal source place water circulating pump metered flow

The water circulating pump of same thermal source under different operating modes has identical metered flow, and its flow is all determined by following formula:

$G=(1.05~1.15)\frac{860Q}{\mathrm{\&rho;}(t_g-t_h)}$ m ³In/h formula:

The metered flow of G---certain thermal source, m ³/ h;

The rated heating capacity of Q---certain thermal source, kW;

ρ---the density of water under specified return water temperature, kg/m ³

t _g, t _h---the specified confession of thermal source or heating network, return water temperature, ℃;

The 3rd step: determine thermal source place circulating pump head

The flow of the water circulating pump of same thermal source under different operating conditions is identical, but lift is different, its lift should be according to many thermals source looping network the actual hydraulic condition under different operating conditions, determine by analytical calculation; Concrete definite method is:

(1) at first many thermals source looping network is decomposed into confession water ring net and backwater looped network, selectes respectively the pressure reference point for water ring net and backwater looped network, the pressure reference point should be selected the confession backwater network access node of same thermal source;

(2) select a certain operating mode as design condition, determine for water ring net and the metered flow of each node of backwater looped network under this operating mode, and use matrix notation:

${\stackrel{\&OverBar;}{q}}_G={[q_{1G},q_{2G},...,q_{\mathrm{mG}}]}^T$ And ${\stackrel{\&OverBar;}{q}}_H={[q_{1H},q_{2H},...,q_{\mathrm{mH}}]}^T$

(3) respectively according to the metered flow matrix for, each node of return pipe net, calculative determination for, each node of return pipe net with respect to the node pressure drop matrix of pressure reference point separately:

${\stackrel{\&OverBar;}{p}}_G={(p_{1G},p_{2G},...,p_{\mathrm{mG}})}^T$ And ${\stackrel{\&OverBar;}{p}}_H={(p_{1H},p_{2H},...,p_{\mathrm{mH}})}^T$

(4) according to the node pressure drop of water supply node and backwater node, determine the hot user of least favorable of many thermals source looping network

Its least favorable user must satisfy following relationship:

△p _J＝p _JG-p _JH＝max(p _iG-p _iH)i＝1，2，…，m

P in formula _JG---the water supply looped network node pressure drop of the hot user J of least favorable, mH ₂O；

p _JH---the backwater looped network node pressure drop of the hot user J of least favorable, mH ₂O；

M---many thermals source looping network node comprises thermal source node and user node number;

(5) determine respectively the pressure matrix of confession, each node of backwater looped network

Set the minimum pressure △ p of the hot user J of least favorable _J=△ p ₀, △ p ₀Be the minimum of a value of the required available pressure of the hot user security heat supply of regulation and stipulation, pressurization point is located on the backwater looped network node of benchmark thermal source, and its level pressure value is p ₀, the pressure matrix of confession, each node of backwater looped network is:

${\stackrel{\&OverBar;}{p}}_G^{\&prime;}=[p_0+\mathrm{\&Delta;}{p}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-p_{1G},p_0+\mathrm{\&Delta;}{p}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-p_{2G},$

${...,p_0+\mathrm{\&Delta;}{p}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-p_{\mathrm{mG}}]}^T$

${\stackrel{\&OverBar;}{p}}_H^{\&prime;}={(p_0-p_{1H},p_0-p_{2H},...,p_0-p_{\mathrm{mH}})}^T$

(6) the pressure reduction matrix between definite confession, each corresponding node of backwater looped network

$\mathrm{\&Delta;}\stackrel{\&OverBar;}{p}={\stackrel{\&OverBar;}{p}}_G^{\&prime;}-{\stackrel{\&OverBar;}{p}}_H^{\&prime;}$

$=({\mathrm{\&Delta;p}}_1,\mathrm{\&Delta;}{p}_2,...,\mathrm{\&Delta;}{p}_i,...)$

$=[\mathrm{\&Delta;}{p}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-(p_{1G}-p_{1H}),\mathrm{\&Delta;}{p}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-(p_{2G}-p_{2H}),...,$

${\mathrm{\&Delta;}{p}_0+(p_{\mathrm{JG}}-p_{\mathrm{JH}})-(p_{\mathrm{mG}}-p_{\mathrm{mH}})]}^T$

(7) determine the lift of each heat-source Cycles water pump under this operating mode

The thermal source node that moves under this operating mode is according to the sign determination of its water supply looped network node flow, if water supply network node flow Q _iG＜0, the user that this node is corresponding must be thermal source, and therefore, the recirculated water pump lift under the thermal source that moves under this operating mode is determined by following formula:

H _rk＝△p ₀+(p _JG-p _JH)-(p _iG-p _iH)+H ₀ k＝1，2，...，M

H in formula _rk---the lift of k heat-source Cycles water pump, mH ₂O；

p _iG---the node pressure drop of the water supply looped network node that the k thermal source is corresponding, mH ₂O；

p _iH---the node pressure drop of the backwater looped network node that the k thermal source is corresponding, mH ₂O；

H ₀---the drag losses of thermal source inside under theoretical flow, press the regulation and stipulation value, mH ₂O；

M---the number of operation thermal source under this operating mode;

(8) lift of each heat-source Cycles water pump under other operating condition determined in repeating step (2)～(7);

The 4th step: water circulating pump is set

The water circulating pump tricks corresponding according to each thermal source of determining, metered flow and the recirculated water pump lift of water circulating pump, the constant speed water circulating pump that metered flow is identical, rated head is different and the corresponding corollary apparatus of corresponding tricks are set at each thermal source place, and overlapping water circulating pump should be arranged in parallel more; And locate to arrange flow control valve each user;

When the rated head of water circulating pump under several different operating modes of a certain thermal source is more or less the same in 5mH ₂During O, this thermal source is merged into a cover at water circulating pump and the corollary apparatus thereof of above-mentioned several operating modes.

3. collocation method as claimed in claim 2 is characterized in that:

Described many thermals source looping network has three thermals source and three kinds of different operating modes; Three thermals source are respectively base-load heat source, regulate thermal source and peak adjusting heat source; Three kinds of different operating modes are respectively base regime, regulate operating mode and peak regulation operating mode; Wherein:

Base-load heat source participates in three kinds of operating conditions, and the configuration parameter of the power induction system under three kinds of operating modes is: under base regime, and metered flow Q=294m ³/ h, rated head H=85mH ₂O； Regulate under operating mode metered flow Q=294m ³/ h, rated head H=68mH ₂O； Under the peak regulation operating mode, metered flow Q=294m ³/ h, rated head H=48mH ₂O；

Regulate thermal source and participate in two kinds of operating conditions, the configuration parameter of the power induction system under two kinds of operating modes is: regulate under operating mode metered flow Q=214m ³/ h, rated head H=58mH ₂O； Under the peak regulation operating mode, metered flow Q=214m ³/ h, rated head H=80mH ₂O；

Peak adjusting heat source only participates in the operation of peak regulation operating mode, and the configuration parameter that calculates the power induction system under this operating mode is: metered flow Q=198m ³/ h, rated head H=76mH ₂O。

4. the method for operation of a power induction system as claimed in claim 1 is characterized in that:

Under base regime, only move base-load heat source and the power induction system under base regime thereof, simultaneously the aperture of the hot customer flow control valve of the setting of the metered flow under base regime according to each user;

Under the adjusting operating mode, only move base-load heat source and regulate thermal source, and moving respectively their in the power induction system of regulating under operating mode, setting simultaneously the aperture of hot customer flow control valve according to the metered flow of each user under the adjusting operating mode; If many thermals source looping network has a plurality of different adjusting thermals source, and a plurality of adjusting thermal source drops into according to certain order according to the situation of change of thermic load or out of service, and the adjusting operating mode of this pipe network is divided into a plurality of adjusting operating modes; Under the different adjustment operating mode, operation is regulated operating mode corresponding thermal source and power induction system with this respectively;

Under the peak regulation operating mode, base-load heat source, all adjusting thermals source and peak adjusting heat source all put into operation, and move respectively they under the peak regulation operating mode the power induction system, simultaneously the metered flow under the peak regulation operating mode is set the aperture of hot customer flow control valve according to each user;

Under each operating condition, adopt respectively the method for operation of constant flow, rely on the load variations of regulating the heat medium temperature adaptive system.

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