CN110645628A - Water-saving and energy-saving heat supply and water replenishing system and using method thereof - Google Patents
Water-saving and energy-saving heat supply and water replenishing system and using method thereof Download PDFInfo
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- CN110645628A CN110645628A CN201910303447.9A CN201910303447A CN110645628A CN 110645628 A CN110645628 A CN 110645628A CN 201910303447 A CN201910303447 A CN 201910303447A CN 110645628 A CN110645628 A CN 110645628A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
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Abstract
The invention discloses a water-saving and energy-saving heat supply and water supplement system and a use method thereof, wherein the system comprises a primary network, a heat exchange station and a secondary network, a sealed water storage tank is arranged in the heat exchange station and is connected with a tap water supply pipeline, the sealed water storage tank is respectively connected with the primary network through a first pipeline and a first parallel pipeline, and is also connected with at least two secondary networks through a second pipeline and a second parallel pipeline. Utilize this system moisturizing, when the secondary net leaks to overhaul, need not arrange the water in this secondary net and can change other usefulness into, can also utilize the original pressure of running water for the secondary net moisturizing, be favorable to practicing thrift the energy, when the net needs water injection or moisturizing, a plurality of heat exchange stations can supply water for the net simultaneously, greatly promote the speed of water injection or moisturizing.
Description
Technical Field
The invention relates to the field of heat supply, in particular to a water-saving and energy-saving heat supply and water replenishing system and a using method thereof.
Background
At present, in many cities in the north, a centralized and unified heating mode is adopted, for example, hot water generated by heat sources such as thermal power plants or boilers is operated by pipelines of a heating company to supply heat to users. The pipeline comprises a primary network pipeline and a secondary network pipeline, hot water generated by a heat source forms circulation through the primary network, the primary network passes through a plurality of heat exchange stations of the community, heat is transferred to water in the secondary network pipeline through a heat exchanger in the heat exchange stations, the water in the secondary network pipeline is heated and then is conveyed to each resident of the community, generally, one heat exchange station can drive the plurality of secondary network pipelines, and each secondary network is responsible for heating the resident of one or more buildings. In this heating mode, water plays an important role as a heating medium, and water replenishment is often required due to various losses in both the primary and secondary networks. The current water supply mode to the secondary net sets up uncovered water tank in the heat exchange station, sets up the ball-cock assembly in the water tank, and the water tank is to setting for the water level through the running water moisturizing to the secondary net through the water pump of unit for needs moisturizing carries out the moisturizing. The heat supply and water supplement system has the following defects: if a certain secondary network leaks, only water in the secondary network can be drained completely for maintenance, but the water in the secondary network cannot be reused, so that thousands of tons of water are wasted; the water in the tap water pipeline has a pressure of about 0.25 MPa, but after the tap water is discharged into the water tank, except that the water level in the water tank is raised and has little potential energy, the original pressure energy is basically lost and is not reasonably utilized, and when a secondary network is replenished with water, a water pump is always required to be started for replenishing water, so that the energy waste is caused; when a heating season begins, water needs to be injected into a primary network, due to the large scale of the primary network, water is simply injected into the primary network from the existing single water source point, the water can be injected in ten days generally, and if the primary network leaks water in operation, the water supplementing speed of the existing single water source point water supplementing mode is low, so that the effective use of the primary network is influenced.
Disclosure of Invention
The invention aims to provide an energy-saving and water-saving heat supply and water supplement system, which can be used for other purposes without draining water in a secondary network when the secondary network leaks and is overhauled, and can also supplement water for the secondary network by utilizing the original pressure of tap water, so that a water pump can not be started in the early stage of water supplement of the secondary network, thereby being beneficial to saving energy, when the primary network needs water injection or water supplement, a plurality of heat exchange stations can simultaneously supply water for the primary network, greatly improving the speed of water injection or water supplement, and being beneficial to maintaining the smooth and efficient operation of the primary network.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a heat supply water charging system of water conservation and energy saving, including the primary network, heat transfer station and secondary network, the primary network takes place the heat exchange with the secondary network in the heat transfer station, a serial communication port, be equipped with sealed water storage tank in the heat transfer station, sealed water storage tank links to each other with the running water supply pipeline, sealed water storage tank links to each other with the primary network through first pipeline and first parallelly connected pipeline respectively, be equipped with first water pump and first check valve on first pipeline, be equipped with first relief pressure valve on first parallelly connected pipeline, sealed water storage tank still links to each other with two secondary networks all through second pipeline and the parallelly connected pipeline of second at least, be equipped with second water pump and second check valve on the second pipeline, be equipped with the second relief pressure valve on the parallelly connected pipeline of second.
The water flow direction of the first one-way valve and the second one-way valve is from the sealed water storage tank to the primary network or the secondary network, the water flow direction of the first pressure reducing valve and the second pressure reducing valve is from the primary network or the secondary network to the sealed water storage tank, and valves are arranged on the tap water supply pipeline, the first parallel pipeline, the second pipeline and the second parallel pipeline.
Preferably, the tap water supply pipeline is connected with a water softening device.
Preferably, a safety valve is arranged on the sealed water storage tank.
The invention also aims to provide a using method of the system, which specifically adopts the following technical scheme:
the use method of the water-saving and energy-saving heat supply and water supply system comprises the following steps:
(a) hot water generated by a heat source is sent out through a primary network and exchanges heat with water in a secondary network through a heat exchanger in a heat exchange station, the water in the primary network is cooled and sent back to the heat source to be heated again to form a cycle, and the water in the secondary network is heated and sent to a user for heating and then cooled to form a cycle;
(b) when the secondary network leaks, the following conditions are adopted:
(b1) if other secondary networks need to be supplemented with water, a valve on a second parallel pipeline of the leaked secondary network is opened, so that the water in the leaked secondary network flows back to the sealed water storage tank through a second pressure reducing valve, and a second water pump on a second pipeline of the secondary network needing to be supplemented with water is started to supplement water to the secondary network;
(b2) if no other secondary network needs to be supplemented with water, a valve on a second parallel pipeline of the leaked secondary network is opened, so that the water in the leaked secondary network flows back to the sealed water storage tank through a second pressure reducing valve, and a first water pump on a first pipeline of the primary network is started to supplement water to the primary network;
(c) when a tap water supply pipeline in a certain heat exchange station can not supply water and a secondary network needs water supplement, a valve on a first parallel pipeline is opened, so that water in a primary network enters a sealed water storage tank through a first pressure reducing valve and supplies water to the secondary network needing water supplement, and the sealed water storage tanks in other heat exchange stations are used for supplementing water to the primary network;
(d) when the primary network needs water supplement, a first water pump on a first pipeline is started to supplement water for the primary network;
(e) when the secondary network needs water supplement, if the water pressure in the secondary network is lower than the water pressure of the sealed water storage tank, the second water pump is not started, but the water pressure of the sealed water storage tank is directly used for water supplement of the secondary network, and if the water pressure in the secondary network is higher than the water pressure in the sealed water storage tank, the second water pump is started for water supplement of the secondary network.
Among the above-mentioned technical scheme, the running water directly gets into sealed water storage tank, can keep the pressure of running water, and when giving the water supplement of secondary net, the pressure of secondary net will be less than the pressure of running water then need not start-up the water pump can directly lean on the pressure moisturizing of sealed water storage tank. The water leakage of the general secondary network often occurs in the heating season, when water is pressurized and tested, water leakage is found after a certain group of secondary network is injected, when maintenance is needed, a tap water supply pipeline of the sealed water storage tank can be closed, water in the water leakage secondary network flows back to the sealed water storage tank through a pressure reducing valve of a second parallel pipeline and is supplied to other secondary networks needing water supply, or the water is directly discharged into the primary network, the water leakage secondary network is limited to the large capacity of the primary network, and the water leakage secondary network can be sufficiently contained. If the primary net needs water supplement, the water supplement requirement of the primary net can be met. When the heating season begins, tap water of a plurality of heat exchange stations is allowed to be simultaneously injected into the primary network by the system, and the time required by primary network water injection can be greatly shortened. After the tap water of a certain heat exchange station fails and can not be supplemented, the primary network can be used for supplementing water for the secondary network, and the tap water of other heat exchange stations can be used for supplementing water for the primary network, so that the flexibility of the operation control of the whole network is improved.
Drawings
FIG. 1 is a schematic diagram of a heating system;
FIG. 2 is a schematic view of a water replenishment system;
fig. 3 is a schematic diagram of the primary and secondary network heat exchange.
Detailed Description
The invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic diagram of a heating system, which includes a primary grid 1, hot water in the pipes of the primary grid 1 can be sourced from a heat source 101 such as a thermal power plant or a boiler, and the pipes of the primary grid 1 are returned to the heat source 101 through a plurality of heat exchange stations 2 to form a circulation. The primary network 1 and the secondary network 3 are subjected to heat exchange in the heat exchange station 2 through the heat exchanger 102, namely, after passing through the heat exchanger 102, the water temperature in the primary network is reduced, the water temperature in the secondary network is increased, and then the heated hot water is sent to the heaters of all residents through the secondary network for heating. A plurality of secondary networks 3 are generally arranged in each heat exchange station 2 to exchange heat with the primary network 1, and each secondary network 3 is responsible for heating a certain household area in a community.
Fig. 2 is a schematic diagram of a water replenishing system, which comprises a sealed water storage tank 4, wherein the sealed water storage tank 4 is installed in the heat exchange station 2. One side of sealed water storage tank 4 leaves water inlet 5, and water inlet 5 links to each other with running water supply pipe 6 through the pipeline, still leaves valve 51 before water inlet 5, and valve 51 generally is in normally open state, can in time be for carrying out the moisturizing in the water storage tank 4, and when valve 51 closed, running water supply pipe 6 stopped to supply water for water storage tank 4. A safety valve 41 is also mounted at the top end of the sealed water storage tank 4. Further, a softening device (not shown) is installed after the valve 51, and the softening device can soften the water in the tap water supply line 6 and then flow into the water storage tank 4.
Leave first delivery port 7 on sealed water storage tank 4, first delivery port 7 is connected with once net 1 through first pipeline 71, installs first check valve 73 and first water pump 74 on first pipeline 71, and first check valve 73 can control the rivers direction and be netted 1 once by sealed water storage tank 4 flow direction, and the water in the net pipeline once can not directly get into in the sealed water storage tank through this pipeline, and first water pump 74 is used for squeezing into the net with the water in the sealed water storage tank 4. Still install first parallel line 72 in the below of first water pump and first check valve, install first relief pressure valve 75 on first parallel line 72, first relief pressure valve can be from taking on/off valve, opens first relief pressure valve 75 after, and the water in the network pipeline once can get into in the sealed water storage tank 4 after the first relief pressure valve 75 reduces water pressure.
Still leave two at least second delivery ports 8 on sealed water storage tank 4, second delivery port 8 links to each other with secondary network 2 through second pipeline 81, installs second water pump 83 and second check valve 84 on second pipeline 81 in proper order, and second check valve 84 and second water pump 83 below still connect in parallel have a second relief pressure valve 85, and the second relief pressure valve can be from taking the switch valve, and second relief pressure valve 85 is installed on second parallel pipeline 82. The water flow direction of the second one-way valve 84 is from the water storage tank 4 to the secondary network 2, and the second water pump provides driving force for the secondary network. The water in the secondary network 3 flows back to the sealed water storage tank 4 through the second pressure reducing valve 85 on the second parallel pipeline 82. Valves can be arranged on the tap water supply pipeline, the first pipeline and the second pipeline to enhance the on-off control of the water pipelines, and the first pressure reducing valve and the second pressure reducing valve do not need valves, but are provided with non-valves for opening and closing on the first parallel pipeline and the second parallel pipeline.
When the secondary network leaks and overhauls it, according to the condition of difference, carry out different operations to the moisturizing device to reach the water conservation purpose, specifically as follows:
when a certain secondary network leaks, other secondary networks need water supplement, the second pressure reducing valve on the second parallel pipeline of the secondary networks with the leakage is opened at the moment, so that water in the secondary network pipeline flows back to the water storage tank, meanwhile, the valve on the tap water supply pipeline is closed, and a second water pump on the second pipeline of the secondary networks with the water supplement is started to supplement water to the secondary networks. Therefore, the leaked water on the secondary network pipeline can be supplemented to other secondary networks, and water conservation is facilitated.
When no other secondary network needs to be replenished, the second pressure reducing valve on the second parallel pipeline of the secondary network with leakage is firstly opened, so that water in the pipeline of the secondary network flows back to the water storage tank, meanwhile, the first water pump on the first pipeline of the primary network is opened, the primary network is replenished, the secondary network is limited to the large capacity of the primary network, and the secondary network can be sufficiently accommodated.
Except the condition that takes place to leak, when the unable water supply of running water supply pipe in the heat transfer station and secondary network need the moisturizing, can open the first relief pressure valve on the first parallel pipeline, make the water in the primary network get into sealed water storage tank, meanwhile the secondary on-line second water pump that will need the moisturizing is opened, can carry out the moisturizing to it like this, can also guarantee secondary network normal use in the running water supply pipe salvagees the stage, can also be for the primary network moisturizing through the sealed water storage tank in other heat transfer stations, in order to prevent the primary network lack of water.
When water needs to be supplemented in the primary network, the first water pump on the first pipeline of the primary network can be started, and water in the water storage tank is supplemented into the primary network. At the beginning stage of heating season, the running water in the water storage tanks of a plurality of heat exchange stations can be simultaneously injected for a network, and the time required by primary network water injection can be greatly shortened.
In addition, because the sealed water storage tank is directly connected with the tap water supply pipeline, the water in the water storage tank has the same water pressure as the water in the tap water supply pipeline, usually 0.25 MPa, so when the sealed water storage tank is used for supplementing water for the secondary network, if the water pressure in the secondary network is lower than the water pressure of the sealed water storage tank, the water is directly supplemented for the secondary network by using the water pressure of the sealed water storage tank without starting a second water pump; and when the water pressure in the secondary net reaches the water pressure in the sealed water storage tank, the second water pump is started to supplement water for the secondary net. Therefore, the use of a second water pump can be omitted in the earlier stage, and the energy is saved.
The above embodiments are merely illustrative of the concept and implementation of the present invention, and are not restrictive, and technical solutions that are not substantially changed under the concept of the present invention are still within the scope of protection.
Claims (5)
1. The utility model provides a heat supply water charging system of water conservation and energy saving, including the primary network, heat transfer station and secondary network, the primary network takes place the heat exchange with the secondary network in the heat transfer station, a serial communication port, be equipped with sealed water storage tank in the heat transfer station, sealed water storage tank links to each other with the running water supply pipeline, sealed water storage tank links to each other with the primary network through first pipeline and first parallelly connected pipeline respectively, be equipped with first water pump and first check valve on first pipeline, be equipped with first relief pressure valve on first parallelly connected pipeline, sealed water storage tank still links to each other with two secondary networks all through second pipeline and the parallelly connected pipeline of second at least, be equipped with second water pump and second check valve on the second pipeline, be equipped with the second relief pressure valve on the parallelly connected pipeline of second.
2. The water-saving and energy-saving hot-water supply system according to claim 1, wherein the water flow direction of the first check valve and the second check valve flows from the sealed water storage tank to the primary network or the secondary network, the water flow direction of the first pressure reducing valve and the second pressure reducing valve flows from the primary network or the secondary network to the sealed water storage tank, and valves are installed on the tap water supply pipeline, the first pipeline and the first parallel pipeline, and the second pipeline and the second parallel pipeline.
3. The water and energy saving hot-water supplying system according to claim 1 or 2, wherein the tap water supply line is connected to a softened water device.
4. The water and energy saving hot-water supply system according to claim 1 or 2, wherein a safety valve is installed on the sealed water storage tank.
5. The method for using a water and energy saving hot-water supply system according to claim 1 or 2, characterized by comprising the following steps:
(a) hot water generated by a heat source is sent out through a primary network and exchanges heat with water in a secondary network through a heat exchanger in a heat exchange station, the water in the primary network is cooled and sent back to the heat source to be heated again to form a cycle, and the water in the secondary network is heated and sent to a user for heating and then cooled to form a cycle;
(b) when the secondary network leaks, the following conditions are adopted:
(b1) if other secondary networks need to be supplemented with water, a valve on a second parallel pipeline of the leaked secondary network is opened, so that the water in the leaked secondary network flows back to the sealed water storage tank through a second pressure reducing valve, and a second water pump on a second pipeline of the secondary network needing to be supplemented with water is started to supplement water to the secondary network;
(b2) if no other secondary network needs to be supplemented with water, a valve on a second parallel pipeline of the leaked secondary network is opened, so that the water in the leaked secondary network flows back to the sealed water storage tank through a second pressure reducing valve, and a first water pump on a first pipeline of the primary network is started to supplement water to the primary network;
(c) when a tap water supply pipeline in a certain heat exchange station can not supply water and a secondary network needs water supplement, a valve on a first parallel pipeline is opened, so that water in a primary network enters a sealed water storage tank through a first pressure reducing valve and supplies water to the secondary network needing water supplement, and the sealed water storage tanks in other heat exchange stations are used for supplementing water to the primary network;
(d) when the primary network needs water supplement, a first water pump on a first pipeline is started to supplement water for the primary network;
(e) when the secondary network needs water supplement, if the water pressure in the secondary network is lower than the water pressure of the sealed water storage tank, the second water pump is not started, but the water pressure of the sealed water storage tank is directly used for water supplement of the secondary network, and if the water pressure in the secondary network is higher than the water pressure in the sealed water storage tank, the second water pump is started for water supplement of the secondary network.
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| CN201910303447.9A CN110645628A (en) | 2019-04-16 | 2019-04-16 | Water-saving and energy-saving heat supply and water replenishing system and using method thereof |
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| CN201910303447.9A CN110645628A (en) | 2019-04-16 | 2019-04-16 | Water-saving and energy-saving heat supply and water replenishing system and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060899A (en) * | 2021-11-29 | 2022-02-18 | 北京华能长江环保科技研究院有限公司 | Distributed energy utilization system for heating and power generation |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060899A (en) * | 2021-11-29 | 2022-02-18 | 北京华能长江环保科技研究院有限公司 | Distributed energy utilization system for heating and power generation |
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