Summary of the invention
The object of the invention is the deficiency overcoming prior art and device, provide a kind of easy for installation, take up an area few, be conducive to the multi-heat source single tube UTILIZATION OF VESIDUAL HEAT IN heating system promoting Municipal capital construction.
To achieve these goals, the invention provides a kind of multi-heat source single tube UTILIZATION OF VESIDUAL HEAT IN heating system, comprise multiple thermal source, single tube heat supply network and thermal substation, wherein thermal substation comprises energy source station, between for station, one in direct-furnish station and large temperature difference thermal substation and/or multiple, the outlet of initial thermal source is connected with the entrance of thermal substation by single tube heat supply network, thermal substation is serially connected on single tube heat supply network, thermal source is connected in series with thermal substation alternate intervals, the entrance pipe of thermal substation is provided with independent loops water pump, the outlet of thermal substation is connected by the entrance of single tube heat supply network with next stage thermal substation, or be connected with the water return outlet of next stage thermal source, the outlet of next stage thermal source is connected with the entrance of the more thermal substation of next stage by single tube heat supply network again, the outlet of the thermal substation of least significant end is connected by the water return outlet of single tube heat supply network with initial thermal source, forms the closed circuit of single tube heat supply network, single tube heat supply network is the branch network of pipes waiting caliber water supply line to be circular layout.
Single tube heat supply network is also serially connected with heat supply network main circulation pump and filter, and the entrance of filter is connected with the outlet of thermal substation, and the outlet of filter is connected with the entrance of heat supply network main circulation pump, and heat supply network major cycle delivery side of pump is connected with the water return outlet of thermal source.
Be connected with crossing pipe between the entrance and exit of wherein energy source station and be provided with valve on crossing pipe, be also connected with crossing pipe between the entrance and exit for station and be provided with valve on crossing pipe.
Single tube heat supply network is also connected with small pump and water supply tank by valve.
Thermal source is one in steam power plant, heating boiler, machine waste heat recovery and/or multiple.
The entrance pipe of thermal substation is provided with independent loops water pump, and entrance and/or the outlet of independent loops water pump are connected with control valve.
Direct-furnish station is multiple, is serially connected on single tube heat supply network after multiple direct-furnish station parallel connection again.
Large temperature difference thermal substation is one or more, between large temperature difference thermal substation or large in parallel between temperature difference thermal substation with one or more direct-furnish station after be serially connected in again on single tube heat supply network.
Be connected with bypass pipe between the entrance and exit of direct-furnish station or large temperature difference thermal substation, and be provided with valve on bypass pipe.
The present invention also provides a kind of heat supply method of multi-heat source single tube UTILIZATION OF VESIDUAL HEAT IN heating system, thermal source provides high-temperature-hot-water, by single tube heat supply network by delivery to thermal substation, after thermal substation and the heat exchange of user side, hot water returns single tube heat supply network, enter next stage thermal source to be heated, then single tube heat supply network is got back to after entering next stage thermal substation and next stage user side heat exchange, after multilevel heat source and thermal substation, final hot water enters the water return outlet of initial thermal source by heat supply network main circulation pump, be admitted to initial thermal source again to heat, complete the circulation of hot water in heat supply network; Each thermal substation can realize independent control by the valve on independent loops water pump, control valve, crossing pipe and crossing pipe, and water supply tank provides moisturizing by small pump to single tube heat supply network, and single tube heat network system water supply maximum temperature is 190 DEG C.
Detailed description of the invention
As shown in Figure 1, the invention provides a kind of multi-heat source single tube UTILIZATION OF VESIDUAL HEAT IN heating system, comprise multiple thermal source 1 and 1 ', single tube heat supply network and thermal substation, wherein thermal substation comprises energy source station 2, between for station 3, one in direct-furnish station 4 and large temperature difference thermal substation 5 and/or multiple, the outlet of initial thermal source is connected with the entrance of thermal substation by single tube heat supply network, thermal substation is serially connected on single tube heat supply network, thermal source is connected in series with thermal substation alternate intervals, the entrance pipe of thermal substation is provided with independent loops water pump 6, the outlet of thermal substation is connected by the entrance of single tube heat supply network with next stage thermal substation, or be connected with the water return outlet of next stage thermal source, the outlet of next stage thermal source is connected with the entrance of the more thermal substation of next stage by single tube heat supply network again, the outlet of the thermal substation of least significant end is connected by the water return outlet of single tube heat supply network with initial thermal source, forms the closed circuit of single tube heat supply network, single tube heat supply network is the branch network of pipes waiting caliber water supply line to be circular layout.
Large temperature difference thermal substation 5 refers to that heat exchange station installs large temperature difference lithium bromide chiller, and hot net water can be down to 20 DEG C by 100 DEG C of heat exchange.
Single tube heat supply network is also serially connected with heat supply network main circulation pump 8 and filter 7, the entrance of filter 7 is connected with the outlet of thermal substation, and the outlet of filter is connected with the entrance of heat supply network main circulation pump 8, and the outlet of heat supply network main circulation pump 8 is connected with the water return outlet of thermal source.
Be connected with crossing pipe between the entrance and exit of wherein energy source station 2 and on crossing pipe, be provided with valve 11, be also connected with crossing pipe between the entrance and exit for station 3 and on crossing pipe, be provided with valve 11.
Single tube heat supply network is also connected with small pump 9 and water supply tank 10 by valve 13.
Thermal source is one in steam power plant 1, heating boiler, machine waste heat recovery 1 ' and/or multiple.Waste heat recovery unit 1 ' can provide hot net water to 90 DEG C, and steam power plant and heating boiler 1 can provide high-temperature-hot-water to 190 DEG C.
The entrance pipe of thermal substation is provided with independent loops water pump 6, and entrance and/or the outlet of independent loops water pump are connected with control valve 12.
Direct-furnish station 4 is multiple, is serially connected on single tube heat supply network after multiple direct-furnish station 4 parallel connection again.
Large temperature difference thermal substation 5 is one or more, between large temperature difference thermal substation 5 or large in parallel between temperature difference thermal substation with one or more direct-furnish station after be serially connected in again on single tube heat supply network.
Be connected with bypass pipe between the entrance and exit of direct-furnish station 4 or large temperature difference thermal substation 5, and on bypass pipe, be provided with valve 14.
Thermal source is steam power plant 1, heating boiler, one in machine waste heat recovery 1 ' and/or multiple, thermal source provides high-temperature-hot-water, by single tube heat supply network by delivery to thermal substation, after thermal substation and the heat exchange of user side, hot water returns single tube heat supply network, enter next stage thermal source to be heated, then single tube heat supply network is got back to after entering next stage thermal substation and next stage user side heat exchange, after multilevel heat source and thermal substation, final hot water enters the water return outlet of initial thermal source by heat supply network main circulation pump, be admitted to initial thermal source again to heat, complete the circulation of hot water in heat supply network, each thermal substation can realize independent control by the valve on independent loops water pump, control valve, crossing pipe and crossing pipe, and water supply tank provides moisturizing by small pump to single tube heat supply network, and single tube heat network system water supply maximum temperature is 190 DEG C.
The separate control procedure of thermal substation is described for a confession station 3.When the valve 11 on crossing pipe is closed or regulates time, the control valve 12 that the porch of independent loops water pump 6 connects is opened, for station 3 between the high-temperature-hot-water carrying out self-heat power is entered by control valve 12 and independent loops water pump 6, in a confession station 3, carry out heat exchange with user side, hot water release heat gets back to single tube heat supply network later again.After user side obtains heat, for user provides heating water.When for a station 3 break down need maintenance or provide the user side of heat not need heat supply for a station 3 time, valve 11 on crossing pipe is opened, the control valve 12 that the porch of independent loops water pump 6 connects cuts out, and hot water is circulated by crossing pipe, for station 3 heat exchange between not entering.
Separate control procedure and a confession station 3 of energy source station 2 are substantially similar.
The control valve 12 that the independence of direct-furnish station 4 and large temperature difference thermal substation 5 controls directly to be connected with its porch by independent loops water pump 6 realizes, and opens or closes control valve 12 and controls hot water and whether enter direct-furnish station 4 and large temperature difference thermal substation 5 carries out heat exchange.
The bypass pipe connected between the entrance and exit of direct-furnish station 4 or large temperature difference thermal substation 5 and the valve 14 arranged on bypass pipe, the crossing pipe at effect and energy source station 2 and a confession station 3 is similar, when direct-furnish station 4 or large temperature difference thermal substation 5 break down need maintenance or user side not to need heat supply time, open valve 14, the control valve 12 that the porch closing independent loops water pump 6 connects, can shield direct-furnish station 4 or large temperature difference thermal substation 5.
Independent loops water pump 6 can also regulate flow and the flow velocity of the hot water entering thermal substation respectively.
Single-main distribution is to eliminate water return pipeline with the difference of tradition for backwater two-pipe system, utilizes single water supply line will be together in series or parallel for thermal substation each in thermal region and each heat user, forms distributed mixing heating system.In this system, pipeline no longer progressively attenuates with Design cooling load situation, drag losses and changes in flow rate, but is made up of the single branch network of pipes waiting caliber (waiting flow) water supply line to be circular layout.Heat supply network sigle-pipe concurrent-flow is made up of single tube, crossing pipe, all kinds of valve member, expansion bend etc., saves tubing than two-pipe system, reduces investment, system is simple, easy for installation, takes up an area few.
Because thermal substation all installs independent loops water pump 6, therefore the resistance loss of sewage heat exchanger of traditional heat supply network in design, can not be considered, line loss, the heating districts physical features discrepancy in elevation two factors are only considered in single-main distribution heat supply network main circulation pump 8 design selection, ensure that hot net water flowing meets to circulate, the heat-net-pipeline of 100 kilometers can be realized farthest, be applicable to long distance delivery, and reduce heating network operation cost.Thermal substation installs independent loops water pump 6 and crossing pipe, control valve, improve thermal substation self-adjusting ability, effectively solve existing heating system horizontal hydraulic imbalance, planning load and actual load, at developing mismatch problem, realize systems of distributed heating systems, user's effluent amount, pressure are by each hot source point self-regulation.
Single tube heat network system water supply maximum temperature can reach 190 DEG C, and improve supply water temperature, can increase heat supply network back-up capability, System Expansion is good, reduces heat supply network caliber simultaneously, reduces initial investment, strong and municipal heating systems long-term plan and urban construction and development.
Between the difference of single-main distribution thermal substation and traditional heat supply network is not only to have for standing, direct-furnish station, also introduce energy source station and large temperature difference thermal substation, single-main distribution achieves direct-furnish, a heating network system mixing application, utilize energy source station, tradition asks confession station, the difference at traditional direct-furnish station, greatly temperature difference thermal substation connects, combination, effectively reduce single-main distribution return water temperature, thus raising heat transfer temperature difference, promote pipe network conveying capacity, and its waste heat recovery ability is improved to the hot source point (steam power plant etc.) having waste heat recovery apparatus.
One pipe heating system adopts the single branch network of pipes waiting caliber (waiting flow) water supply line to circularize layout.Heat supply network sigle-pipe concurrent-flow is made up of one-pipe, crossing pipe, all kinds of valve member, expansion bend etc., and its heat network system structure is simple; Each thermal substation installs independent loops water pump 6 and crossing pipe, control valve, and thermal substation self-adjusting ability is high, provides the foundation for multi-heat source common network runs.
Multi-heat source single tube UTILIZATION OF VESIDUAL HEAT IN heating system of the present invention has the following advantages;
1, the caliber such as, single tube system;
2, branch network of pipes, is circular layout;
3, single-main distribution saves tubing than two-pipe system, reduces investment;
4, the simplest, the single tube great-leap-forward of sigle-pipe concurrent-flow is equipped with control valve and is convenient to regulate;
5, single-main distribution is easy for installation, takes up an area few, is conducive to promoting Municipal capital construction;
6, be applicable to long distance delivery, the heat-net-pipeline of 100 kilometers can be realized farthest;
7, a heating network operation cost (water circulating pump low cruise) is reduced;
8, solve existing heating system horizontal hydraulic imbalance (setting up energy source station, user according to the flow self needed needed for self-regulation and pressure), realize the design of pipe networks of direct heating;
9, planning load and actual load is solved, at developing mismatch problem;
10, realize systems of distributed heating systems, user's effluent amount, pressure are by each hot source point self-regulation;
11, heat supply network high-temperature heat supply (hot net water maximum temperature can reach 190 DEG C) can be realized, improve supply water temperature, heat supply network back-up capability can be increased, reduce heat supply network caliber and reduce initial investment, strong and municipal heating systems long-term plan;
12, single-main distribution dilatancy is good, strong urban construction and development;
13, direct-furnish, a heating network system mixing application is realized;
14, effectively heat supply network return water temperature is reduced;
15, hot source point (steam power plant etc.) the waste heat recovery ability having waste heat recovery apparatus is improved;
16, multi-heat source common network can be realized run.