CN113606639A - Heating system of gas boiler room and energy utilization method - Google Patents
Heating system of gas boiler room and energy utilization method Download PDFInfo
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- CN113606639A CN113606639A CN202110706122.2A CN202110706122A CN113606639A CN 113606639 A CN113606639 A CN 113606639A CN 202110706122 A CN202110706122 A CN 202110706122A CN 113606639 A CN113606639 A CN 113606639A
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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
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
- F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
- F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
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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
- F24D19/1045—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The disclosure relates to the technical field of heat supply, in particular to a heat supply system of a gas boiler room and an energy utilization method. The invention discloses a heat supply system of a gas boiler room, which comprises a boiler hot water system, wherein the boiler hot water system is respectively connected with a solar heat collector and an air source heat pump system; the air source heat pump system is connected with the ground source heat pump system; the cross-season energy storage water loop system is connected with the ground source heat pump system. When the solar radiation intensity is low, the air energy and the geothermal energy are used as auxiliary devices to provide heat, so that the return water temperature of the gas boiler is increased, the gas consumption is saved, and multi-energy complementation is realized.
Description
Technical Field
The disclosure relates to the technical field of heat supply, in particular to a heat supply system of a gas boiler room and an energy utilization method.
Background
The traditional gas boiler room only depends on gas combustion to generate energy in the centralized function, and can not meet the energy utilization requirements of China in the aspects of transmission efficiency, environmental pollution and the like. The gas boiler room has single and extensive energy utilization mode and insufficient civilization degree of resource conservation. Due to the energy resource characteristics of 'secondary coal, lean oil and less gas' in China, the development of solar energy, ground source heat pumps and cross-season energy storage complementary heating systems is more in line with the national conditions of China.
The multifunctional utilization comprehensively utilizes various energy sources according to local conditions and the characteristics of non-renewable energy sources of fuel gas to form complementation, thereby improving the quality and efficiency of energy supply and achieving the effects of energy conservation, emission reduction, green and low carbon. The time complementation makes complementary utilization and redistribution of energy supply from the time perspective according to different fluctuation characteristics and adjustment capacity among the energy sources; the heat complementation is mainly realized by injecting different heat energy into a proper position in the thermodynamic cycle according to the principle of 'temperature to port and cascade utilization', so that the effects of improving the energy conversion efficiency and time complementation are achieved.
The multi-energy utilization system is the expansion of the traditional distributed energy application and the centralized energy application, and is the visualization of the integrated integration concept in the engineering field of heating and cooling systems, so that the application of the distributed energy is expanded from points to surfaces and goes to the system from local parts. The multi-energy utilization system is not simple superposition of multiple energy sources, but comprehensive complementary utilization is carried out on the height of the system according to the levels of different energy sources, and the matching relation and the conversion use among various energy sources are arranged comprehensively, so that the most reasonable energy utilization effect and benefit are obtained.
The "multi-energy utilization" system has two main types of meanings: the method is oriented to various energy requirements of terminal users such as heat and cold, traditional energy and new energy are utilized in a complementary mode according to local conditions, overall development and optimization layout, integrated heat and cold supply infrastructure is built, and multi-energy cooperative supply and comprehensive cascade utilization of energy are achieved through natural gas and gas boilers, distributed renewable energy and other modes; and secondly, the operation of a multi-energy complementary system is promoted by depending on a central heating mode of a gas boiler room and by superposing the advantages of geothermal energy, solar energy, waste heat and other resources.
The multifunctional utilization centralized function system has important significance and profound strategic significance for building a clean, low-carbon, safe and efficient modern energy system.
Disclosure of Invention
Aiming at the defects of the prior technical scheme, the invention aims to provide a heat supply system of a gas boiler room, which realizes the simultaneous utilization of four renewable energy systems of solar energy, air energy, a ground source heat pump and a cross-season energy storage water loop heat pump, and enables the system to be more energy-saving and environment-friendly.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
the invention discloses a heat supply system of a gas boiler room, which comprises a boiler hot water system, wherein the boiler hot water system is respectively connected with a gas boiler, a circulating water pump of a heating system and a demister of the heating system; the solar heat collector is connected with the water replenishing tank; the air source heat pump system, the ground source heat pump system and the cross-season energy storage water loop system are connected with the water separator and the water collector.
As a further technical scheme, the boiler hot water system comprises a boiler, and a water outlet of the boiler is connected with a water supply pipeline; the water inlet of the boiler is connected with a water return pipeline.
As a further technical scheme, a heating system circulating water pump and a heating system dirt separator are arranged on the water return pipeline.
As a further technical scheme, the water return pipeline is respectively connected with the water replenishing tank and the heating water return pipe.
As a further technical scheme, a sixteenth electric valve is arranged on the solar hot water supply pipe; and a fifteenth electric valve is arranged on the heating water return pipe.
As a further technical scheme, the solar water heating system comprises a water replenishing tank; the solar hot water supply pipe is connected with the water replenishing tank; a boiler hot water system water replenishing pump is arranged on a pipeline connecting the solar hot water storage water tank and the solar hot water supply pipe; a water level and temperature sensor is arranged in the solar hot water storage water tank; the solar hot water heat storage water tank is connected with the upper end and the lower end of the solar heat collector through heat medium circulating pipes respectively.
As a further technical scheme, a seventeenth electric valve is arranged on a heating medium circulating pipe which is connected with the solar hot water storage water tank and the upper end of the solar heat collector; and a solar hot water heat storage circulating water pump is arranged on a heat medium circulating pipe which is connected with the solar hot water heat storage water tank and the lower end of the solar heat collector.
As a further technical scheme, the air source heat pump system comprises an air source heat pump module unit, and a heating water return pipe is connected with the input end of a water collector; the input end of the water collector also comprises a water return pipeline of a terminal user; the output end of the water collector is respectively connected with a dirt remover of a ground source heat pump system, a user side circulating water pump of an air conditioning system, an air source heat pump module unit, the ground source heat pump system and a seasonal energy storage water loop heat pump; the output end of the water separator is connected to a solar hot water supply pipe through a pipeline and connected to a boiler hot water return pipe, and meanwhile, the output end of the water separator further comprises a water supply pipe of a terminal user. The input end of the water separator is a communication pipeline among a water return pipeline of the heating system, a water return pipeline of the water-loop heat pump and the water collecting and separating device.
As a further technical scheme, the ground source heat pump system comprises a heating water return pipeline dirt separator, a ground source heat pump unit and an air conditioning system user side circulating water pump; the dirt remover of the ground source heat pump system is connected with a circulating water pump at the user side of the air conditioning system, and a pipeline is connected to the input ends of the ground source heat pump unit and the air source heat pump module unit in parallel through a tee joint after being pressurized by the water pump. The system is connected to a ground source heat pump unit and an air source heat pump module unit respectively, the water pump is divided into two paths after being pressurized, one path is connected with the ground source heat pump unit, and the other path is connected with the air source heat pump module unit.
As a further technical scheme, the ground source heat pump system further comprises a buried pipe side voltage stabilizing device of the ground source heat pump system, and the buried pipe side voltage stabilizing device of the ground source heat pump system is connected with the user side voltage stabilizing device; the pressure stabilizing device at the buried pipe side of the ground source heat pump system is connected with a water replenishing tank of the air conditioning system, and the water replenishing tank of the air conditioning system is connected with the softened water device; the buried pipe side voltage stabilizer of the ground source heat pump system is connected with an outdoor well of the cross-season energy storage water ring heat pump system through a voltage stabilizing pipe.
As a further technical scheme, a user side circulating water pump of a ground source heat pump system is installed on a water supply pipe of the air source air conditioner.
As a further technical scheme, the output end of the air source heat pump module unit is connected with an air source air conditioner water supply pipe, the air source air conditioner water supply pipe and a ground source heat pump air conditioner water supply pipe are connected in parallel and then are connected to the input end of a water segregator, and the ground source heat pump air conditioner water supply pipe is connected with a water cold accumulation plate type heat exchanger; the water cold accumulation plate type heat exchanger is connected with the water collector.
As a further technical scheme, the water cold accumulation plate type heat exchanger is connected with a fire pool, and a water cold accumulation circulating water pump is arranged on the connecting pipeline.
As a further technical scheme, the water cold accumulation plate type heat exchanger is connected with a ground source heat pump unit, and the ground source heat pump unit and the ground heat exchanger form a loop; a loop formed by the ground source heat pump unit and the ground heat exchanger is provided with a first electric valve, a second electric valve, a third electric valve, a fourth electric valve, a fifth electric valve, a sixth electric valve, a seventh electric valve, an eighth electric valve and a ground source heat pump system buried pipe side dirt remover.
As a further technical scheme, the cross-season energy storage water loop heat pump system further comprises a cross-season energy storage system outdoor well device, and a loop is formed by the heat storage water tank and the cross-season energy storage system outdoor well device; a loop formed by the heat storage water tank and the seasonal energy storage system outdoor well device is provided with a first valve and a second valve.
As a further technical scheme, a water supply and return pipeline of the cross-season energy storage water loop heat pump is connected with a ground source heat pump system and an air source heat pump system in parallel through pipelines, and a user side circulating water pump and an ultrasonic heat meter of the cross-season energy storage system are installed on a loop.
In a second aspect, the present disclosure further relates to an energy utilization method, based on the heat supply system of the gas boiler room of the present disclosure;
when the solar heat collector is heated in a central mode in winter, when the outlet temperature of the solar heat collector reaches the set temperature of 60 ℃, the seventeenth electric valve is opened, and simultaneously the solar hot water heat storage circulating water pump is started in a linkage mode to enable the high-temperature water in the solar heat collector to be pressed into the solar hot water heat storage water tank;
when the outlet temperature of the solar heat collector reaches the set temperature of 45 ℃, the solar hot water heat storage circulating water pump is closed, and the electric valve is closed;
the process is circularly reciprocated, the water level in the solar hot water storage water tank gradually rises, and when the water level of the solar hot water storage water tank reaches 100%, the electric valve and the solar hot water storage circulating water pump are closed; meanwhile, a water replenishing pump of a boiler hot water system is started, a solar hot water heat storage circulating water pump is closed, and high-temperature water is conveyed into the gas-fired boiler through a solar hot water supply pipe;
as a further technical scheme, when the central heating is carried out in winter, when the indoor temperature reaches 15 ℃, starting the air source module unit to return water to the boiler, and when the indoor temperature reaches 8 ℃, closing the air source module unit; an air source heat pump module unit of the air source heat pump system conveys hot water into a boiler through an air source air conditioner water supply pipe and a water separator;
as a further technical scheme, when central heating is performed in winter, the ground source heat pump system opens the second electric valve, the fourth electric valve, the sixth electric valve and the eighth electric valve, closes the first electric valve, the third electric valve, the fifth electric valve and the seventh electric valve, and outputs hot water to the boiler water return pipeline through the water separator and then to the boiler;
as a further technical scheme, when central heating is performed in winter, a first valve is opened in the cross-season energy storage water loop system, and a second valve of the valve is closed;
as a further technical scheme, when the autumn boiler is not started, the cross-season energy storage water ring system closes the first valve and the second valve, opens the thirteenth electric valve and the fourteenth electric valve, and outputs hot water of the boiler hot water system to the cross-season energy storage system outdoor well device;
as a further technical scheme, when refrigerating in summer, when the indoor temperature reaches 24 ℃, starting an air source heat pump module of an air source system to provide cold energy for a factory, and when the indoor temperature reaches 30 ℃, closing the air source heat pump module;
as a further technical scheme, when refrigerating in summer, the ground source heat pump system closes the second electric valve, the fourth electric valve, the sixth electric valve and the eighth electric valve, and opens the first electric valve, the third electric valve, the fifth electric valve and the seventh electric valve; when the fire pool is also used as a cold storage pool and needs cold storage, the eleventh electric valve and the twelfth electric valve are closed, and the ninth electric valve and the tenth electric valve are started; when the fire pool is required to be used as a cold accumulation pool for cold supply, the eleventh electric valve is closed, and the ninth electric valve, the tenth electric valve and the eleventh electric valve are started.
As a further technical scheme, in the process of refrigerating in summer, firstly, the cold energy of a fire pool is utilized, when the cold energy is insufficient, a seasonal energy storage water loop system is started firstly, then a ground source heat pump system is started, and finally, an air source heat pump system is started according to the temperature between water pumps; when heating in winter, the seasonal energy storage water loop system is started first, then the ground source heat pump system is started, and finally the air source heat pump system is started according to the temperature between the water pumps.
The beneficial effects of one or more technical schemes are as follows:
(1) the invention realizes the simultaneous utilization of four renewable energy systems of solar energy, air energy, ground source heat pump and cross-season energy storage water loop heat pump, thus leading the system to be more energy-saving and environment-friendly.
(2) The invention integrates the single systems, integrates the comprehensive energy of solar energy, air energy and geothermal energy, and complements the hot water system of the gas boiler while meeting the energy requirement of buildings in the factory area of the gas boiler, thereby overcoming the defects of the respective systems and greatly improving the comprehensive energy utilization efficiency of the systems.
(3) When the solar radiation intensity is strong, the solar heat collector is fully utilized and provides heat, so that the solar heat is placed underground in autumn, and the utilization efficiency of the solar energy is obviously improved.
(4) When the solar radiation intensity is low, the air energy and the geothermal energy are used as auxiliary devices to provide heat, so that the return water temperature of the gas boiler is increased, the gas consumption is saved, and multi-energy complementation is realized.
(5) The invention can realize various different operation modes, can better meet the requirements of a gas boiler plant area on heat supply and refrigeration, realizes the annual operation of the system and improves the annual utilization rate of equipment.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the operation of a heating system of a gas boiler room according to the present disclosure;
FIG. 2 is a schematic view of an air source module assembly arrangement;
in the figure, 1, a gas boiler, 2, a heating system circulating water pump, 3, a heating system dirt separator, 4, a ground source heat pump unit, 5, a water cold storage plate type heat exchanger, 6, a fire water pool, 7, a water cold storage circulating water pump, 8, a water separator, 9, a water collector, 10, a ground source heat pump system dirt separator, 11, an air conditioning system user side circulating water pump, 12, an air source heat pump module unit, 13, a solar hot water storage water tank, 14, a boiler hot water system water replenishing pump, 15, a solar hot water storage circulating water pump, 16, a solar heat collector, 17, a ground source heat pump system buried pipe side circulating water pump, 18, a ground source heat pump system buried pipe side dirt separator, 19, a ground source heat exchanger, 20, a heat pump system buried pipe side pressure stabilizing device, 21, a ground source heat pump system user side pressure stabilizing device, 22, an air conditioning system water replenishing tank, 23, a softened water device, 24, a ground source heat pump system buried pipe side dirt separator, a ground source heat exchanger, a heat exchanger heat, A cross-season energy storage water ring heat pump, 25, a cross-season energy storage air conditioning system outdoor side circulating water pump, 26, a cross-season energy storage system user side circulating water pump, 27, a cross-season energy storage system outdoor well device, 28, an ultrasonic heat meter, 29, a first electric valve, 30, a second electric valve, 31, a third electric valve, 32, a fourth electric valve, 33, a fifth electric valve, 34, a sixth electric valve, 35, a seventh electric valve, 36, an eighth electric valve, 37, a ninth electric valve, 38, a tenth electric valve, 39, an eleventh electric valve, 40, a twelfth electric valve, 41, a thirteenth electric valve, 42, a fourteenth electric valve, 43, a fifteenth electric valve, 44, a sixteenth electric valve, 45, a first valve, 46, a second valve, 47, a seventeenth electric valve, 48, a fan, 49, an air pipe, 50, a fire prevention valve, 51, a high-pressure frequency converter, 52, a high-pressure frequency converter, 53. air source heat pump module unit, 54, bracket, 55, remote thermometer, 56, local thermometer, 57 and water pump room.
Detailed Description
Example 1
As shown in fig. 1-2, the invention discloses a heat supply system of a gas boiler room, which is a heat supply system for realizing 'multi-energy complementation' of the gas boiler room and comprises a boiler hot water system, wherein the boiler hot water system is respectively connected with a water replenishing tank, a water separator and a water collector; the air source heat pump system and the ground source heat pump system are connected and the seasonal energy storage water loop system is connected in parallel.
The boiler hot water system comprises a boiler, and a water outlet of the boiler is connected with a water supply pipeline; the water inlet of the boiler is connected with a water return pipeline. And a heating system circulating water pump 2 and a heating system dirt separator 3 are arranged on the water return pipeline. The water return pipeline is respectively connected with the solar hot water supply pipe and the heating water return pipe. The design temperature of the hot water system of the gas boiler 1 is 40/110 ℃, and the quantity-quality regulation of the system can be respectively realized through the circulating water pump and the boiler burner.
The water replenishing system of the gas-fired boiler 1 hot water system needs to be provided with a water treatment system, and the water replenishing of a common boiler needs to be stored in a system water replenishing tank after passing through a sodium ion water treatment system, a multi-media filter and a deoxidizing system. The municipal primary network heat pipe network system generally has the water supply amount of 2% of the flow of the whole system, so the roof type solar heat collector 16 is arranged to extract the water in the water supply tank with high temperature so as to save the gas consumption, and meanwhile, the water supply tank can be used as a heat source of an outdoor well of a cross-season energy storage water ring heat pump in a transition season (autumn), so that the heat is stored in the outdoor well so as to provide the heating efficiency of the water pump heat pump in winter.
The solar heat collector 16 comprises a solar hot water supply pipe, and a sixteenth electric valve 44 is arranged on the solar hot water supply pipe; a fifteenth electric valve 43 is mounted on the heating water return pipe. The solar hot water supply pipe is connected with the solar hot water system.
Further, the solar water heating system comprises a solar hot water heat storage water tank 13; a boiler hot water system water replenishing pump 14 is arranged on a pipeline connecting the solar hot water heat storage water tank 13 and the solar hot water supply pipe; the solar hot water heat accumulation water tank 13 is connected with the upper end and the lower end of the solar heat collector 16 through heat medium circulating pipes respectively. A seventeenth electric valve 47 is arranged on a heating medium circulating pipe which is connected with the solar hot water heat storage water tank 13 and the upper end of the solar heat collector 16; and a solar hot water heat storage circulating water pump 15 is installed on a heat medium circulating pipe which is connected with the solar hot water heat storage water tank 13 and the lower end of the solar heat collector 16. And a water level and temperature sensor is installed in the solar hot water heat storage water tank 13. The water replenishing tank is also used as a heat storage water tank.
The air source heat pump system comprises an air source heat pump module unit 12, and a heating water return pipe is connected with the input end of the water collector 9; the output end of the water collector 9 is respectively connected with the water separator 8, the ground source heat pump system dirt separator 10 and the cross-season energy storage water loop heat pump; wherein, the output end of the water separator 8 is connected to the boiler water return pipeline through a pipeline.
An air source heat pump system is characterized in that an air source heat pump module unit 12 is arranged in a water pump room, meanwhile, heat dissipation of a frequency converter in an electric high-voltage frequency conversion room is led to the water pump room, and in winter, the ambient temperature of the water pump room is improved to achieve waste heat recovery in an area range. Meanwhile, a local thermometer and a remote thermometer are arranged between the water pumps.
The ground source heat pump system comprises a ground source heat pump unit and a buried pipe side pressure stabilizing device 20, wherein the buried pipe side pressure stabilizing device 20 and a user side pressure stabilizing device 21 of the ground source heat pump system are connected with a water supplementing tank 22 of the air conditioning system through pipelines. The water replenishing tank 22 of the air conditioning system is connected with the water softening device 23; the buried pipe side voltage stabilizing device 20 of the ground source heat pump system is connected with a voltage stabilizing pipe of the seasonal energy storage water ring heat pump 24 system through a voltage stabilizing pipe. The dirt separator 10 of the ground source heat pump system is respectively connected with a water outlet main pipe of the water collector and an air conditioner water return pipe when the ground source heat pump is used for cold accumulation.
A buried pipe ground source heat pump system is characterized in that outdoor buried pipes are arranged at green lands of a factory area, and a refrigeration machine room is arranged in a boiler room. The ground source heat pump unit 4 can be used as a dual-working-condition unit when being selected, the fire pool 6 in the plant area is borrowed in summer, the off-peak electricity is utilized to take the fire pool 6 as a cold storage pool at night, the cold quantity of the cold storage pool is utilized to meet the room needing cold supply in the plant area in daytime, and when the cold quantity of the cold storage pool cannot meet the cold supply requirement of the plant area, the ground source heat pump system is started to provide the cold quantity for the plant area.
The water cold accumulation plate type heat exchanger 5 is connected with a cold accumulation water tank, and a water cold accumulation circulating water pump 7 is arranged on the connecting pipeline. The water cold accumulation plate type heat exchanger 5 is connected with the ground source heat pump unit 4, and the ground source heat pump unit 4 and the ground heat exchanger 19 form a loop; a loop formed by the ground source heat pump unit 4 and the ground heat exchanger 19 is provided with a first electric valve 29, a second electric valve 30, a third electric valve 31, a fourth electric valve 32, a fifth electric valve 33, a sixth electric valve 34, a seventh electric valve 35 and an eighth electric valve 36.
And a cross-season energy storage water ring heat pump 24 system is also arranged, and outdoor drilling is arranged at the green place of the plant area. The cross-season energy storage water loop heat pump 24 system further comprises a cross-season energy storage system outdoor well device 27, and a loop is formed by the heat storage water tank and the cross-season energy storage system outdoor well device 27; a first valve 45 and a second valve 46 are arranged on a loop formed by the hot water storage tank and the seasonal energy storage system outdoor well device 27. The cross-season energy storage water ring heat pump 24 and the tail end of the high-efficiency graphene form a loop, and a cross-season energy storage system user side circulating water pump 26 and an ultrasonic heat meter 28 are installed on the loop.
As shown in fig. 2, a schematic diagram of an air source module unit arranged in an actual scene is shown, a fan 48 is arranged in a high-voltage frequency conversion room 52, the fan 48 is positioned above a high-voltage frequency converter 51 and connected with the high-voltage frequency converter 51, and the other end of the fan is connected with a fire damper 50 through an air pipe 49; the heat of the high-voltage frequency converter is conveyed to a water pump room through an air pipe, and the heat is absorbed and converted into hot water by utilizing an air source heat pump
The water pump room 57 and the air source module unit 53 are positioned above the bracket 54, and a remote thermometer 55 and a local thermometer 56 are also arranged below the bracket. The remote thermometer can display the temperature between the water pumps in the centralized control room so as to control the starting of the air source heat pump. The in-situ thermometer means that the temperature display can be seen in situ in the water pump room.
Example 2
In a second aspect, the present disclosure further relates to an energy utilization method, and a heating system of a gas boiler 1 based on the present disclosure is specifically as follows:
during central heating in winter, when the temperature of the outlet of the solar heat collector 16 reaches the set temperature of 60 ℃, the seventeenth electric valve 47 is opened and simultaneously the solar hot water heat storage circulating water pump 15 is started in a linkage manner to press the high-temperature water in the solar heat collector 16 into the solar hot water heat storage water tank 13; when the outlet temperature of the solar heat collector 16 reaches the set temperature of 45 ℃, the solar hot water heat storage circulating water pump 15 is closed, and the seventeenth electric valve 47 is closed; the above processes are circularly repeated, the water level in the solar hot water heat storage water tank 13 gradually rises, and when the water level in the heat storage water tank reaches 100%, the seventeenth electric valve 47 and the solar hot water heat storage circulating water pump 15 are closed; meanwhile, the boiler hot water system water replenishing pump 14 is started, the solar hot water heat storage circulating water pump 15 is closed, and high-temperature water is conveyed into the gas-fired boiler 1 through the solar hot water supply pipe.
When the central heating is performed in winter, when the indoor temperature reaches 15 ℃, the air source module machine is started to provide a heat source for boiler backwater or heating of a building in a factory, and when the indoor temperature reaches 8 ℃, the air source heat pump outdoor module machine set is closed.
And during cooling in summer, when the indoor temperature is 24 ℃, starting the air source module machine to provide cooling capacity for the plant area, and when the indoor temperature is 30 ℃, closing the air source module machine. The air source heat pump and the ground source heat pump are connected in parallel to achieve system complementation.
When central heating is performed in winter, the ground source heat pump system uses off-peak electricity at night to take the fire-fighting water pool 6 as a cold storage water pool, the cold energy of the cold storage water pool is used for meeting the room needing cold supply in the plant area in daytime, and when the cold energy of the cold storage water pool cannot meet the cold supply requirement of the plant area, the ground source heat pump system is started to provide the cold energy for the plant area. And the ground source heat pump system opens the second electric valve 30, the fourth electric valve 32, the sixth electric valve 34 and the eighth electric valve 36, closes the first electric valve 29, the third electric valve 31, the fifth electric valve 33 and the seventh electric valve 35, outputs the hot water to the boiler water return pipeline through the water separator 8 and outputs the hot water to the boiler, and the summer is just opposite.
During cooling in summer, the ground source heat pump system closes the second electric valve 30, the fourth electric valve 32, the sixth electric valve 34 and the eighth electric valve 36, and opens the first electric valve 29, the third electric valve 31, the fifth electric valve 33 and the seventh electric valve 35; when the fire pool 6 is used as a cold storage pool to store cold, the eleventh electric valve 39 and the twelfth electric valve 40 are closed, and the ninth electric valve 37 and the tenth electric valve 38 are started; when the fire pool 6 is required to be used as a cold storage pool for cold supply, the eleventh electric valve 39 is closed, and the ninth electric valve 37, the tenth electric valve 38 and the eleventh electric valve 39 are started.
When central heating is performed in winter, a first valve 45 is opened in the cross-season energy storage water ring system, and a second valve 46 is closed; when the autumn boiler is not started, the cross-season energy storage water ring system closes the first valve 45 and the second valve 46, opens the thirteenth electric valve 41 and the fourteenth electric valve 42, and supplements the solar energy heat storage of the boiler water supplementing tank into the drilled well, so as to improve the efficiency of the water ring heat pump. When the valves are adjusted in season switching, the opened valves are closed first and then opened correspondingly, so that overpressure of the drilling pipeline caused by communication between indoor side air conditioning water and an outdoor side drilling pipeline is avoided.
In the summer refrigeration process, the seasonal energy storage water loop system is started firstly, then the ground source heat pump system is started, and finally the air source heat pump system is started according to the temperature between the water pumps; when heating in winter, the seasonal energy storage water loop system is started first, then the ground source heat pump system is started, and finally the air source heat pump system is started according to the temperature between the water pumps. When refrigerating in summer, the air source heat pump system, the ground source heat pump system and the cross-season energy storage water loop heat pump can be connected in parallel and used simultaneously. Meanwhile, if the factory area has 'low ebb electricity', the cold energy can be stored in the fire pool by using the ground source heat pump double-working-condition unit at night. And when the cold load for the factory of the boiler house is low in the daytime, the cold storage amount of the fire pool is preferentially used.
The start and stop of each system are controlled according to the COP of the corresponding air source heat pump, the ground source heat pump and the cross-season cold accumulation system respectively, meanwhile, each system can independently provide heat for the single building in the boiler plant area and simultaneously provide heat, and partial heat can be provided for a primary network of a hot water system of the gas boiler 1, so that energy conservation is realized to a greater extent.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The heating system of the gas boiler room is characterized by comprising a boiler hot water system, wherein the boiler hot water system is respectively connected with a gas boiler, a heating system circulating water pump and a heating system demister; the solar heat collector is connected with the water replenishing tank; the air source heat pump system, the ground source heat pump system and the cross-season energy storage water loop system are connected with the water separator and the water collector.
2. The heating system of the gas-fired boiler room as recited in claim 1, wherein the air source heat pump system comprises an air source heat pump module unit, and the heating water return pipe is connected with the input end of the water collector; the input end of the water collector also comprises a water return pipeline of a terminal user; the output end of the water collector is respectively connected with a dirt remover of a ground source heat pump system, a user side circulating water pump of an air conditioning system, an air source heat pump module unit, the ground source heat pump system and a seasonal energy storage water loop heat pump; the output end of the water separator is connected to a solar hot water supply pipe through a pipeline and connected to a boiler hot water return pipe, and meanwhile, the output end of the water separator also comprises a water supply pipe of a terminal user; the input end of the water separator is a communication pipeline among a water return pipeline of the heating system, a water return pipeline of the water-loop heat pump and the water collecting and separating device.
3. The heating system of the gas-fired boiler room as defined in claim 1, wherein the ground source heat pump system further comprises a ground source heat pump system pipe-burying side pressure stabilizing device, the ground source heat pump system pipe-burying side pressure stabilizing device is connected with the ground source heat pump system user side pressure stabilizing device; the pressure stabilizing device at the buried pipe side of the ground source heat pump system is connected with a water replenishing tank of the air conditioning system, and the water replenishing tank of the air conditioning system is connected with the softened water device; the buried pipe side voltage stabilizer of the ground source heat pump system is connected with an outdoor well device of the cross-season energy storage water ring heat pump system through a voltage stabilizing pipe.
4. The heat supply system of the gas-fired boiler room of claim 1, wherein the seasonal energy storage water loop heat pump system comprises a cross-seasonal energy storage system outdoor well device, and a loop is formed by the heat storage water tank and the cross-seasonal energy storage system outdoor well device; a loop formed by the heat storage water tank and the seasonal energy storage system outdoor well device is provided with a first valve and a second valve.
5. An energy utilization method is based on the heating system of the gas boiler room as claimed in claims 1-4, and is characterized in that when the temperature of the outlet of the solar heat collector reaches the set temperature of 60 ℃ in winter central heating, the electric valve is opened and the solar hot water heat storage circulating water pump is started in a linkage manner to press the high-temperature water in the solar heat collector into the solar hot water heat storage water tank; when the outlet temperature of the solar heat collector reaches the set temperature of 45 ℃, the solar hot water heat storage circulating water pump is closed, and the electric valve is closed; the process is circularly reciprocated, the water level in the solar hot water storage water tank gradually rises, and when the water level of the solar hot water storage water tank reaches 100%, the electric valve and the solar hot water storage circulating water pump are closed; meanwhile, a water replenishing pump of a boiler hot water system is started, a solar hot water heat storage circulating water pump is closed, and high-temperature water is conveyed into the gas boiler through a solar hot water supply pipe.
6. The energy utilization method according to claim 1, wherein in the case of central heating in winter, when the indoor temperature reaches 15 ℃, the air source module unit is started to return water to the boiler, and when the indoor temperature reaches 8 ℃, the air source module unit is shut down; the air source heat pump module unit of the air source heat pump system conveys hot water into a boiler through an air source air conditioner water supply pipe and a water separator.
7. The energy utilization method of claim 5, wherein during central heating in winter, the ground source heat pump system opens the second electric valve, the fourth electric valve, the sixth electric valve and the eighth electric valve, closes the first electric valve, the third electric valve, the fifth electric valve and the seventh electric valve, and outputs hot water to the boiler water return pipeline through the water separator and then to the boiler.
8. The energy utilization method of claim 5, wherein in winter central heating, the first valve is opened and the second valve is closed in the cross-season energy storage water ring system.
9. The energy utilization method of claim 5, wherein when the autumn boiler is not started, the cross-season energy storage water ring system closes the first valve and the second valve, opens the thirteenth electric valve and the fourteenth electric valve, and outputs hot water of the boiler hot water system to the cross-season energy storage system outdoor well device.
10. The energy utilization method according to claim 5, wherein in summer refrigeration, the cold energy of the fire pool is utilized firstly, when the cold energy is insufficient, the seasonal energy storage water loop system is started firstly, then the ground source heat pump system is started, and finally the air source heat pump system is started according to the temperature between the water pumps; when heating in winter, the seasonal energy storage water loop system is started first, then the ground source heat pump system is started, and finally the air source heat pump system is started according to the temperature between the water pumps.
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