CN206724273U - A kind of thermal power plant's combining heating system for having peak load regulation network and reducing station-service Electricity Functional - Google Patents

Abstract

The utility model discloses a kind of thermal power plant's combining heating system for having peak load regulation network and reducing station-service Electricity Functional,Including heat supply network water return pipeline and heat supply network water supply line,Also include the back pressure unit heat supply network heating pipeline of multigroup reduction station service,The back pressure unit heat supply network heating pipeline of every group of reduction station service includes the back pressure unit heat supply network electric check valve for the reduction station service for reducing the back pressure unit heat exchangers for district heating of station service and being arranged on the back pressure unit heat exchangers for district heating both sides for reducing station service,The steam discharge pipeline of back pressure unit of each back pressure unit heat exchangers for district heating for reducing station service with reducing station service is connected,Can realize reduces station service and peak load regulation network,Improve the efficiency of thermal power plant's heating system and the peak load regulation network economic benefit of increase thermal power plant,Reliability and the flexibility of the heating system long-term operation are improved simultaneously,So as to realize the safe heat supply of high efficient and flexible.

Description

A kind of thermal power plant's combining heating system for having peak load regulation network and reducing station-service Electricity Functional

Technical field

A kind of thermal power plant's heating system is the utility model is related to, concretely relating to one kind has peak load regulation network and reduce factory With thermal power plant's combining heating system of Electricity Functional.

Background technology

The heating system of large thermal power plant of the prior art, mainly include heat supply network water return pipeline and heat supply network water supply line, Electric check valve and filter screen be housed on heat supply network water return pipeline, heat supply network water return pipeline be sequentially serially connected with multigroup return piping in parallel and Multigroup heat supply network heating pipeline in parallel, the output end and described heat supply network water supply line phase of multigroup heat supply network heating pipeline in parallel Even, return piping described in every group includes backwater electric check valve, circulating pump and the backwater motorized non-return valve sequentially concatenated, every group Described heat supply network heating pipeline includes heat exchangers for district heating and is arranged on the heat supply network electric check valve of heat exchangers for district heating both sides.

Heating system of the above-mentioned large-scale non-thermal power plant unit of the prior art by technological transformation into extraction for heat supply thermal power plant, Non- design extraction for heat supply is relied primarily on, heating extraction pressure is higher, very big pressure difference energy loss, and heating system structure be present Into single, maintenance down is needed when system breaks down, influences normal heat supply, and peak load regulation network can not be realized.Powering Few generating can only be taken during low ebb or abandons wind, abandon light generating, is unfavorable for making full use of for clean energy resource, while can also influence power plant Economic benefit.

Utility model content

The technical problems to be solved in the utility model, which is to provide one kind, can realize peak load regulation network to improve thermal power plant's economy Benefit and station service is reduced, and need also do not interfere with normal heat supply during maintenance to have electricity when a set of heat supply pipeline breaks down Net peak regulation and the thermal power plant's combining heating system for reducing station-service Electricity Functional.

In order to solve the above technical problems, the thermal power plant's joint of the present utility model for having peak load regulation network and reducing station-service Electricity Functional Heating system, including heat supply network water return pipeline and heat supply network water supply line, electric check valve and filter screen are housed on heat supply network water return pipeline, heat Net water return pipeline is sequentially serially connected with multigroup return piping in parallel and multigroup heat supply network heating pipeline in parallel, multigroup heat supply network in parallel The output end of heating pipeline is connected with described heat supply network water supply line, and the return piping described in every group includes the backwater sequentially concatenated Electric check valve, circulating pump and backwater motorized non-return valve, the heat supply network heating pipeline described in every group include heat exchangers for district heating and setting Heat supply network electric check valve in heat exchangers for district heating both sides, in addition to both ends are entered by first, backwater electric check valve with it is described The back pressure unit heat supply network heating pipeline for multigroup reduction station service that multigroup heat supply network heating pipeline in parallel is in parallel, every group of reduction factory The back pressure unit heat supply network heating pipeline of electricity consumption includes reducing the back pressure unit heat exchangers for district heating of station service and is arranged on reduction station-service The back pressure unit heat supply network electric check valve of the reduction station service of the back pressure unit heat exchangers for district heating both sides of electricity, each reduces station service Back pressure unit heat exchangers for district heating be connected with reducing the steam discharge pipeline of back pressure unit of station service.

As improvement of the present utility model, also include peak load regulation network solid electricity heat storage boiler heating pipeline, the power network is adjusted The electric accumulation of heat that peak solid electricity heat storage boiler heating pipeline includes more set peak load regulation network solid electricity heat storage boiler stoves and is attached thereto adds Hot device；Between the back pressure unit heat supply network heating pipeline of described multigroup reduction station service and multigroup heat supply network heating pipeline in parallel simultaneously Bypass valve pipeline is associated with, is divided on the bypass valve pipeline equipped with bypass electric check valve, the electric storage heater into and out of water end (W.E.) It is not connected with the heat supply network water supply line positioned at bypass valve pipeline both sides, the electric storage heater is respectively provided with electricity into and out of water end (W.E.) Accumulation of heat water-in and water-out electric check valve, on the heat supply network water supply line between bypass valve pipeline and electric storage heater water side Equipped with electronic on-off valve.

Using the thermal power plant's combining heating system for having peak load regulation network and reducing station-service Electricity Functional of said structure, due to also wrapping Include multigroup reduction that both ends are entered by first, backwater electric check valve is in parallel with described multigroup heat supply network heating pipeline in parallel The back pressure unit heat supply network heating pipeline of station service, therefore drawing gas for too high steam turbine can be made full use of to carry out back pressure generating, It can effectively reduce the purpose of station service, and when described conventional heat supply network heating pipeline reveals failure and needs maintenance, it is multigroup It is unaffected to reduce the back pressure unit heat supply network heating pipeline of station service, can continue to come into operation, not interfere with whole system Normal heat supply；Due to also including peak load regulation network solid electricity heat storage boiler heating pipeline, and peak load regulation network solid electricity heat accumulating pan Stove heat pipeline can not only be realized by the way of the back pressure unit heat supply network for reducing station service heating pipeline water side is serially connected in The depth peak regulation of power network, thermal power plant's electric energy output is reduced, makes full use of the clean energy resourcies such as wind, light to generate electricity, while also make this heat supply The operation of system is relatively reliable.

Brief description of the drawings

The utility model is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a kind of knot for the thermal power plant's combining heating system for having peak load regulation network and reducing station-service Electricity Functional of the utility model Structure composition schematic diagram.

Embodiment

Referring to Fig. 1, a kind of combined heat system of thermal power plant for having peak load regulation network and reducing station-service Electricity Functional of the present utility model System, including heat supply network water return pipeline 100 and heat supply network water supply line 200, the He of electric check valve 101 is housed on heat supply network water return pipeline 100 Filter screen 102, heat supply network water return pipeline 100 are sequentially serially connected with multigroup return piping 10 in parallel and multigroup heat supply network heating pipeline in parallel 20, the output end of multigroup heat supply network heating pipeline 20 in parallel is connected with described heat supply network water supply line 200, the backwater described in every group Pipeline 10 includes backwater electric check valve 11, circulating pump 12 and the backwater motorized non-return valve 13 sequentially concatenated, the heat described in every group Net heating pipeline 20 includes heat exchangers for district heating 21 and is arranged on the heat supply network electric check valve 22,23 of the both sides of heat exchangers for district heating 21, also Enter including both ends by first, backwater electric check valve 31,32 is in parallel with described multigroup heat supply network heating pipeline 20 in parallel Multigroup reduction station service back pressure unit heat supply network heating pipeline 30, the back pressure unit heat supply network heating pipeline of every group of reduction station service 30 include reducing the back pressure unit heat exchangers for district heating 33 of station service and are arranged on the back pressure unit heat exchangers for district heating for reducing station service The back pressure unit heat supply network electric check valve 34,35 of the reduction station service of 33 both sides, each back pressure unit heat supply network for reducing station service The steam discharge pipeline 37 of back pressure unit 36 of the heater 33 with reducing station service is connected.Also include peak load regulation network solid electricity heat accumulating pan Stove heat pipeline 40, peak load regulation network solid electricity heat storage boiler heating pipeline 40 include more set peak load regulation network solid electricity heat storage boilers Stove 41 and the electric storage heater 42 being attached thereto；Described multigroup reduction station service back pressure unit heat supply network heating pipeline 30 with Bypass valve pipeline 50 is parallel between multigroup heat supply network heating pipeline 20 in parallel, equipped with electronic section of bypass on the bypass valve pipeline 50 Only valve 51, the electric heat storage boiler heater 42 supply water with the heat supply network positioned at the both sides of bypass valve pipeline 50 respectively into and out of water end (W.E.) Pipeline 200 is connected, and the electric storage heater 42 is respectively provided with electric accumulation of heat water-in and water-out electric check valve 43,44 into and out of water end (W.E.), Electronic on-off valve is housed on the heat supply network water supply line 200 between bypass valve pipeline 50 and the water side of electric storage heater 42 201。

Claims (2)

1. a kind of thermal power plant's combining heating system for having peak load regulation network and reducing station-service Electricity Functional, including heat supply network water return pipeline （100）With heat supply network water supply line（200）, heat supply network water return pipeline（100）It is upper that electric check valve is housed（101）And filter screen（102）, heat Net water return pipeline（100）Sequentially it is serially connected with multigroup return piping in parallel（10）Pipeline is heated with multigroup heat supply network in parallel（20）, Multigroup heat supply network heating pipeline in parallel（20）Output end and described heat supply network water supply line（200）It is connected, returning described in every group Water pipeline（10）Including the backwater electric check valve sequentially concatenated（11）, circulating pump（12）With backwater motorized non-return valve（13）, often The described heat supply network heating pipeline of group（20）Including heat exchangers for district heating（21）Be arranged on heat exchangers for district heating（21）The heat supply network electricity of both sides Dynamic stop valve（22、23）, it is characterised in that：Also enter including both ends by first, backwater electric check valve（31、32）With it is described Multigroup heat supply network heating pipeline in parallel（20）The back pressure unit heat supply network heating pipeline for the multigroup reduction station service being in parallel（30）, often Group reduces the back pressure unit heat supply network heating pipeline of station service（30）Back pressure unit heat exchangers for district heating including reducing station service（33） With the back pressure unit heat exchangers for district heating for being arranged on reduction station service（33）The back pressure unit heat supply network of the reduction station service of both sides is electronic Stop valve（34、35）, each back pressure unit heat exchangers for district heating for reducing station service（33）Back pressure unit with reducing station service （36）Steam discharge pipeline（37）It is connected.

2. there is peak load regulation network according to a kind of described in claim 1 and reduce thermal power plant's combining heating system of station-service Electricity Functional, It is characterized in that：Also include peak load regulation network solid electricity heat storage boiler heating pipeline（40）, the peak load regulation network solid electricity heat accumulating pan Stove heat pipeline（40）Including more set peak load regulation network solid electricity heat storage boilers（41）With the electric storage heater being attached thereto（42）； The back pressure unit heat supply network heating pipeline of described multigroup reduction station service（30）Pipeline is heated with multigroup heat supply network in parallel（20）It Between be parallel with bypass valve pipeline（50）, the bypass valve pipeline（50）It is upper that bypass electric check valve is housed（51）, the electric accumulation of heat adds Hot device（42）Into and out of water end (W.E.) respectively with positioned at bypass valve pipeline（50）The heat supply network water supply line of both sides（200）It is connected, the electricity stores Hot heater（42）Be respectively provided with electric accumulation of heat water-in and water-out electric check valve into and out of water end (W.E.)（43、44）, positioned at bypass valve pipeline （50）With electric storage heater（42）Heat supply network water supply line between water side（200）It is upper that electronic on-off valve is housed（201）.