CN210050877U

CN210050877U - Water-saving and energy-saving heat supply and water supply system

Info

Publication number: CN210050877U
Application number: CN201920512133.5U
Authority: CN
Inventors: 朱保超; 芦苇; 张志平
Original assignee: Datang Baoding Heat Supply Co Ltd
Current assignee: Datang Baoding Heat Supply Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-11
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses an energy-conserving heat supply water charging system of water conservation, including primary network, heat transfer station and secondary network, 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 channel, and sealed water storage tank links to each other with primary network through first pipeline and first parallelly connected pipeline respectively, still links to each other through second pipeline and the parallelly connected pipeline of second with two secondary networks at least all. 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

Water-saving and energy-saving heat supply and water supply system

Technical Field

The utility model relates to a heat supply field particularly relates to a water conservation and energy saving's heat supply water compensating system.

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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat supply water charging system of energy-conserving water conservation, this system leaks at the secondary net and overhauls the time, need not arrange the water in this secondary net and can change other usefulness into, can also utilize the original pressure of running water to be secondary net moisturizing, can not start the water pump in secondary net moisturizing earlier stage like this, be favorable to the energy saving, when a net needs water injection or moisturizing, a plurality of heat transfer stations can supply water for a net simultaneously, greatly promote the speed of water injection or moisturizing, be favorable to maintaining a net smooth high-efficient operation.

In order to achieve the purpose, the utility model adopts the following technical proposal:

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 the water softening device, and a valve is arranged between the tap water supply pipeline and the sealed water storage tank.

Preferably, a safety valve is arranged on the sealed water storage tank.

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 present 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 intended to be limiting, and the technical solutions without substantial changes are still within the protection scope under the concept of the present invention.

Claims

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.