CN110864350A - Workshop heat insulation and waste heat recycling system and method - Google Patents
Workshop heat insulation and waste heat recycling system and method Download PDFInfo
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- CN110864350A CN110864350A CN201911132773.4A CN201911132773A CN110864350A CN 110864350 A CN110864350 A CN 110864350A CN 201911132773 A CN201911132773 A CN 201911132773A CN 110864350 A CN110864350 A CN 110864350A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 75
- 238000009413 insulation Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 373
- 238000005338 heat storage Methods 0.000 claims abstract description 75
- 230000017525 heat dissipation Effects 0.000 claims description 34
- 238000010521 absorption reaction Methods 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 28
- 238000003860 storage Methods 0.000 claims description 27
- 230000005855 radiation Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims 7
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical compound [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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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
- F24D17/00—Domestic hot-water supply systems
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
- F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of heated water
-
- 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
- F24D17/00—Domestic hot-water supply systems
- F24D17/0078—Recirculation systems
-
- 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
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a workshop heat insulation and waste heat recycling system and a method, belonging to the field of building energy conservation. The invention comprises a heat shield system, a heat storage system, a waste heat utilization system and a circulation control system. The heat shield system can absorb radiant heat while preventing the radiant heat released by the high radiant heat equipment from diffusing into a workshop, and converts cold water flowing into the heat shield into high-temperature hot water. The heat storage system can store hot water flowing out of the outlet end of the heat shield into the heat storage water tank, and heat loss is avoided. The waste heat utilization system can supply hot water in the heat storage water tank to a user, and waste heat recycling is achieved. The circulation control system can monitor the water temperature of the whole system in real time and control the circulating water pump to adjust the water flow of the whole system. The whole workshop heat insulation and waste heat utilization system can reduce the temperature in a workshop, reduce potential safety hazards in the workshop, improve the working efficiency of workers, recycle heat and achieve the purposes of energy conservation and recycling.
Description
Technical Field
The invention relates to a workshop heat insulation and waste heat recycling system and method, and belongs to the technical field of building energy conservation.
Background
In industrial workshops such as steel making, iron making, ceramics, brick firing, forging, heat treatment and the like, the working environment is often severe. High radiant heat equipment in a workshop can bring heat pollution to a working area, and workers in the workshop for a long time can have various heat imbalance diseases. When the device works in the environment, the device not only has great harm to workers, but also is very easy to cause serious safety accidents.
In view of the above safety problems, the temperature in the workshop can be reduced by using thermal insulation protection, but the existing thermal insulation measures are to reflect the radiant heat released by the high radiant heat equipment in the workshop by using a thermal insulation screen, and the reflected radiant heat still can be leaked into the workshop.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a workshop heat insulation and waste heat recycling system and method, which are used for effectively insulating a workshop with high-radiation heat equipment and aiming at controlling the temperature in a workshop working area and absorbing and utilizing high-radiation heat.
The technical scheme of the invention is as follows: a workshop heat insulation and waste heat recycling system comprises a heat shield system 1, a heat storage system 2 and a waste heat utilization system 3;
the heat shield system 1 is used for blocking the diffusion of radiant heat released by high radiant heat equipment, absorbing the radiant heat and converting cold water flowing into the heat shield into high-temperature hot water;
the heat storage system 2 is used for storing hot water flowing out of the heat shield outlet end of the heat shield system into the heat storage water tank and supplementing water to the heat storage water tank;
the waste heat utilization system 3 is used for supplying hot water in the hot water storage tank to a user.
Further, the heat shield system 1 comprises a circulating water pump I101, a heat shield water inlet pipe 102, a heat shield 103 and a heat shield water outlet pipe 104; the heat shield 103 is arranged outside the high radiant heat device 6, seals the high radiant heat device 6 and is used for preventing the radiant heat released by the high radiant heat device 6 from diffusing outwards, and meanwhile, the heat absorbing plate 7, the header 12 and the exhaust pipe 13 in the heat shield 103 can absorb the radiant heat and convert the radiant heat into high-temperature heat exchange fluid;
wherein the header 12 is transversely arranged in the heat shield 103, the calandria 13 is longitudinally arranged in the heat shield 103 and is contacted with the heat absorbing plate 7, the header 12 is communicated with the calandria 13, and the header 12 is respectively connected with the heat shield water inlet pipe 102 and the heat shield water outlet pipe 104; cold water flows into the heat shield 103 through the heat shield water inlet pipe 102 for heat exchange, the cold water absorbs the radiant heat of the internal components of the heat shield 103 and is converted into high-temperature hot water, the high-temperature hot water flows out of the heat shield water outlet pipe 104, and the high-temperature hot water is transported to the heat storage water tank 203 in the heat storage system 2; and a circulating water pump I101 is arranged on the heat shield water inlet pipe 102.
Further, the heat shield 103 comprises a heat absorbing plate 7, a shell 10, a heat shield water inlet pipe 102, a heat shield water outlet pipe 104, a hoop 11, a header 12, a discharge pipe 13 and a plug 15; the heat exchange fluid enters and exits the interior of the heat shield through the heat shield water inlet pipe 102, and the heat shield water outlet pipe 104 and the heat shield water inlet pipe 102 are tightly connected to the headers 12 at the upper side and the lower side of the heat shield through the clamps 11; the other end of the upper side header 12 is tightly plugged by a plug 15 to prevent the heat exchange fluid from flowing out, one end of the lower side header 12 of the heat shield is externally connected with a heat shield water inlet pipe 102, the other end of the lower side header 12 of the heat shield is tightly plugged by the plug 15, the upper side header 12 and the lower side header 12 are communicated through a plurality of calandria 13, a heat absorption plate 7 is arranged between two adjacent calandria 13, the heat absorption plate 7 is tightly contacted with the calandria 13, the heat exchange fluid flows in the upper side header 12 and the lower side header 13 and the calandria 13, the obtained radiation energy on the heat.
Furthermore, the shell 10 seals the back side of the absorber plate 7 away from the high radiant heat device, the header 12 and the discharge pipe 13 tightly to form a whole closed heat shield, and only the heat absorption side of the absorber plate 7 is exposed outside; the heat absorbing side of the heat absorbing plate 7 is exposed, and heat insulating layers 9 are filled between the other parts of the heat absorbing plate 7 and the shell 10.
Furthermore, the heat absorption side of the heat absorption plate 7 is exposed, and a layer of thin rock wool is filled between the other part of the heat absorption plate 7 and the heat insulation layer 9.
Further, the row of tubes 13 is a profiled tube, the inner wall structure forming the flow winding generator 14 through the mould.
Furthermore, heat absorbing plates 7 are uniformly arranged between two adjacent rows of tubes 13, and the heat absorbing plates 7 are heat collecting fins with equal area.
Further, the surface of the heat absorbing plate 7 is coated with an absorbing coating 8 which absorbs high radiant heat.
Further, the heat storage system 2 comprises a water replenishing pipe 201, a ball float valve 202, a hot water storage tank 203, an overflow pipe 204, a drain valve 205 and a drain pipe 206; a water replenishing pipe 201 is arranged at the upper part of the heat storage water tank 203 and is used for ensuring that the water level in the heat storage water tank 203 is constant, a ball float valve 202 is arranged at the upper end of the water level in the heat storage water tank 203, and an overflow pipe 204 is arranged in the heat storage water tank 203 and is used for preventing the water level from being too high and controlling the internal pressure of the heat storage water tank 203; a drain valve 205 and a drain pipe 206 are provided at the lower end of the hot water storage tank 203.
Further, the waste heat utilization system 3 comprises a circulating water pump ii 301, a heat dissipation device water supply pipe 302, a heat dissipation device 303 and a heat dissipation device water return pipe 304; one end of a heat dissipation device water supply pipe 302 is connected with the heat storage water tank 203 of the heat storage system 2, the other end of the heat dissipation device water supply pipe 302 is connected with a heat dissipation device 303, a circulating water pump II 301 is arranged on the heat dissipation device water supply pipe 302, and circulating water flowing out of an outlet end of the heat dissipation device 303 flows into the heat storage water tank 203 of the heat storage system 2 through a heat dissipation device water return pipe 304.
Further, a circulation control system 4 is also included;
the circulation control system 4 is used for monitoring the water temperature of the heat shield system 1 and the waste heat utilization system 3 in real time and controlling the circulating water pump to regulate the water flow of the whole system;
the circulation control system 4 comprises a heat shield temperature sensor 401, a heat shield signal acquisition circuit 402, a heat shield signal control circuit 403, a waste heat utilization temperature sensor 404, a waste heat utilization signal acquisition circuit 405, a waste heat utilization signal control circuit 406 and a controller 407;
the heat shield temperature sensor 401 is arranged at the outlet end of the heat shield 103, the detected temperature is transmitted to the controller 407 through a heat shield signal acquisition circuit 402, a signal output by the controller 407 is transmitted to the port I101 of the circulating water pump through a heat shield signal control circuit 403, the rotating speed of the circulating water pump 101 is changed according to the temperature, and the loop water flow is adjusted.
The waste heat utilization temperature sensor 404 is arranged at the outlet end of the heat dissipation device 303, the detected temperature is transmitted to the controller 407 through the waste heat utilization signal acquisition circuit 405, a signal output by the controller 407 is transmitted to the port of the circulating water pump II 301 through the waste heat utilization signal control circuit 406, the rotating speed of the circulating water pump II 301 is changed according to the temperature, and the loop water flow is adjusted.
A workshop heat insulation and waste heat recycling method comprises the following steps:
the heat shield system 1 is used for blocking the radiant heat released by the high radiant heat equipment and absorbing the radiant heat, and cold water flowing into the heat shield is converted into high-temperature hot water;
the heat storage system 2 stores the hot water flowing out of the heat shield outlet end of the heat shield system into the heat storage water tank and performs water supplement on the heat storage water tank;
the waste heat utilization system 3 supplies hot water in the heat storage water tank to a user;
the circulation control system 4 monitors the water temperature of the heat shield system 1 and the waste heat utilization system 3 in real time and controls the circulating water pump to adjust the water flow of the whole system.
Further, the method specifically comprises the following steps: the heat shield 103 of the heat shield system 1 is provided outside the high radiant heat apparatus and encloses it; the heat absorption plate 7, the header 12 and the calandria 13 in the heat shield 103 absorb the radiant heat, meanwhile, the cold water in the heat storage water tank 203 flows into the heat shield 103 through the heat shield water inlet pipe 102 for heat exchange, the cold water absorbs the radiant heat on the heat absorption plate 7 and is converted into high-temperature hot water, and the high-temperature hot water flows out of the outlet end of the heat shield 103 and then flows into the heat storage water tank 203 through the heat shield water outlet pipe 104;
when a user needs hot water, the hot water in the hot water storage tank 203 is supplied into the heat sink 303 through the heat sink water supply pipe 302, and the circulating water flowing out of the outlet end of the heat sink 303 flows into the hot water storage tank 203 through the heat sink water return pipe 304 to be recycled. Meanwhile, when the hot water is supplied to a user, a part of the hot water is consumed, so that the water quantity in the hot water storage tank 203 is reduced, and in order to keep the water level height in the water storage tank, a water replenishing pipe 201 and a float valve 202 are arranged on the upper part 203 of the hot water storage tank for automatically replenishing water;
on the other hand, the controller 407 of the circulation control system 4 is connected with the heat shield temperature sensor 401 through a heat shield signal acquisition circuit 402, the acquired water temperature at the outlet end of the heat shield 103 is transmitted to the controller 407 through the heat shield signal acquisition circuit 402, the water temperature is monitored, and the controller 407 controls the rotating speed of the circulation water pump I101 according to the water temperature to adjust the loop water flow;
the controller 407 of the circulation control system 4 is connected with the waste heat utilization temperature sensor 404 through a waste heat utilization signal acquisition circuit 405, the acquired water temperature at the outlet end of the heat dissipation device 303 is transmitted to the controller 407 through the waste heat utilization signal acquisition circuit 405, the water temperature is monitored, and the controller 407 controls the rotating speed of the circulating water pump II 301 according to the water temperature to adjust the loop water flow.
The invention has the beneficial effects that: the heat shield system adopted by the invention can not only prevent radiant heat from diffusing into a workshop, but also absorb the radiant heat through the heat absorbing plate, the exhaust pipe, the collecting pipe and other components in the heat shield, and the heat shield system is assisted with the heat storage system, the waste heat utilization system and the circulation control system after recovering the heat, so that the temperature in the whole workshop is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of a heat shield according to the present invention;
FIG. 3 is a cross-sectional view A-A of a heat shield of the present invention;
FIG. 4 is a cross-sectional view of a heat shield B-B of the present invention;
FIG. 5 is a cross-sectional view of a heat shield C-C according to the present invention.
The respective reference numerals in FIGS. 1 to 5: 1-heat shield system, 2-heat storage system, 3-waste heat utilization system, 4-circulation control system, 5-workshop, 6-high radiation heat equipment, 7-heat absorbing plate, 8-absorbing coating, 9-insulating layer, 10-shell, 11-hoop, 12-header, 13-calandria, 14-winding generator, 15-plug, 101-circulating water pump I, 102-heat shield water inlet pipe, 103-heat shield, 104-heat shield water outlet pipe, 201-water replenishing pipe, 202-ball float valve, 203-heat storage water tank, 204-overflow pipe, 205-water drain valve, 206-water drain pipe, 301-circulating water pump II, 302-heat sink water supply pipe, 303-heat sink, 304-heat sink water return pipe, 13-water drain pipe, 14-winding generator, 15-plug, 101-circulating water pump I, 401-heat shield temperature sensor, 402-heat shield signal acquisition circuit, 403-heat shield signal control circuit, 404-waste heat utilization temperature sensor, 405-waste heat utilization signal acquisition circuit, 406-waste heat utilization signal control circuit and 407-controller.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example 1: as shown in fig. 1-5, a heat insulation and waste heat recycling system for a workshop includes a heat shield system 1, a heat storage system 2, and a waste heat utilization system 3;
the heat shield system 1 is used for blocking the diffusion of radiant heat released by high radiant heat equipment, absorbing the radiant heat and converting cold water flowing into the heat shield into high-temperature hot water;
the heat storage system 2 is used for storing hot water flowing out of the heat shield outlet end of the heat shield system into the heat storage water tank and supplementing water to the heat storage water tank;
the waste heat utilization system 3 is used for supplying hot water in the hot water storage tank to a user.
Further, the heat shield system 1 comprises a circulating water pump I101, a heat shield water inlet pipe 102, a heat shield 103 and a heat shield water outlet pipe 104; the heat shield 103 is arranged outside the high radiant heat device 6, seals the high radiant heat device 6 and is used for preventing the radiant heat released by the high radiant heat device 6 from diffusing outwards, and meanwhile, the heat absorbing plate 7, the header 12 and the exhaust pipe 13 in the heat shield 103 can absorb the radiant heat and convert the radiant heat into high-temperature heat exchange fluid;
wherein the header 12 is transversely arranged in the heat shield 103, the calandria 13 is longitudinally arranged in the heat shield 103 and is contacted with the heat absorbing plate 7, the header 12 is communicated with the calandria 13, and the header 12 is respectively connected with the heat shield water inlet pipe 102 and the heat shield water outlet pipe 104; cold water flows into the heat shield 103 through the heat shield water inlet pipe 102 for heat exchange, the cold water absorbs the radiant heat of the internal components of the heat shield 103 and is converted into high-temperature hot water, the high-temperature hot water flows out of the heat shield water outlet pipe 104, and the high-temperature hot water is transported to the heat storage water tank 203 in the heat storage system 2; and a circulating water pump I101 is arranged on the heat shield water inlet pipe 102.
Further, the heat shield 103 comprises a heat absorbing plate 7, a shell 10, a heat shield water inlet pipe 102, a heat shield water outlet pipe 104, a hoop 11, a header 12, a discharge pipe 13 and a plug 15; the heat exchange fluid enters and exits the interior of the heat shield through the heat shield water inlet pipe 102, and the heat shield water outlet pipe 104 and the heat shield water inlet pipe 102 are tightly connected to the headers 12 at the upper side and the lower side of the heat shield through the clamps 11; the other end of the upper side header 12 is tightly plugged by a plug 15 to prevent the heat exchange fluid from flowing out, one end of the lower side header 12 of the heat shield is externally connected with a heat shield water inlet pipe 102, the other end of the lower side header 12 of the heat shield is tightly plugged by the plug 15, the upper side header 12 and the lower side header 12 are communicated through a plurality of calandria 13, a heat absorption plate 7 is arranged between two adjacent calandria 13, the heat absorption plate 7 is tightly contacted with the calandria 13, the heat exchange fluid flows in the upper side header 12 and the lower side header 13 and the calandria 13, the obtained radiation energy on the heat.
Furthermore, the shell 10 seals the back side of the absorber plate 7 away from the high radiant heat device, the header 12 and the discharge pipe 13 tightly to form a whole closed heat shield, and only the heat absorption side of the absorber plate 7 is exposed outside; the heat absorbing side of the heat absorbing plate 7 is exposed, and heat insulating layers 9 are filled between the other parts of the heat absorbing plate 7 and the shell 10. Ensure that a large amount of radiant heat energy is exchanged and absorbed by the heat exchange fluid in the tube, and prevent the radiant heat from diffusing to the environment. The heat exchange fluid flows in the tubes in the whole heat shield, absorbs radiant heat energy and converts the radiant heat energy into high-temperature heat exchange fluid, and takes away the radiant heat; the insulating layer 9 can be made of polystyrene material.
Furthermore, the heat absorption side of the heat absorption plate 7 is exposed, and a layer of thin rock wool is filled between the other part of the heat absorption plate 7 and the heat insulation layer 9. Preventing the thermal insulation layer 3 from shrinking due to heating.
Further, the row of tubes 13 is a profiled tube, the inner wall structure forming the flow winding generator 14 through the mould.
Furthermore, heat absorbing plates 7 are uniformly arranged between two adjacent rows of tubes 13, and the heat absorbing plates 7 are heat collecting fins with equal area. The heat exchange area can be effectively increased, the structure is simple, and the installation is convenient.
Further, the surface of the heat absorbing plate 7 is coated with an absorbing coating 8 which absorbs high radiant heat. The absorption rate of the heat absorption plate to the high radiant heat equipment is improved. Wherein, the surface of the heat absorbing plate 7 is coated with an absorbing coating 8 which absorbs high radiant heat by a magnetron sputtering method, thereby effectively absorbing the radiant energy of the high radiant heat.
The shell 10 can also be formed by one-step compression molding of a tungsten-molybdenum plate, and a moisture-heat-resistant and anti-aging coating is sprayed on the surface of the shell to block high-radiation heat.
Further, the heat shield 103 of the present invention can be formed in a desired shape, for example, a cylindrical shape, at the time of manufacturing, according to the shape of the high radiant heat equipment to be applied.
Furthermore, the heat absorbing plate 7, the housing 10, the header 12 and the row pipes 13 can also be made of flexible materials, so that the shape of the heat shield can be changed according to the actual needs of the high radiant heat equipment.
Further, the heat storage system 2 comprises a water replenishing pipe 201, a ball float valve 202, a hot water storage tank 203, an overflow pipe 204, a drain valve 205 and a drain pipe 206; a water replenishing pipe 201 is arranged at the upper part of the heat storage water tank 203 and is used for ensuring that the water level in the heat storage water tank 203 is constant, a ball float valve 202 is arranged at the upper end of the water level in the heat storage water tank 203, and an overflow pipe 204 is arranged in the heat storage water tank 203 and is used for preventing the water level from being too high and controlling the internal pressure of the heat storage water tank 203; a drain valve 205 and a drain pipe 206 are provided at the lower end of the hot water storage tank 203.
Further, the waste heat utilization system 3 comprises a circulating water pump ii 301, a heat dissipation device water supply pipe 302, a heat dissipation device 303 and a heat dissipation device water return pipe 304; one end of a heat dissipation device water supply pipe 302 is connected with the heat storage water tank 203 of the heat storage system 2, the other end of the heat dissipation device water supply pipe 302 is connected with a heat dissipation device 303, a circulating water pump II 301 is arranged on the heat dissipation device water supply pipe 302, and circulating water flowing out of an outlet end of the heat dissipation device 303 flows into the heat storage water tank 203 of the heat storage system 2 through a heat dissipation device water return pipe 304.
Further, a circulation control system 4 is also included;
the circulation control system 4 is used for monitoring the water temperature of the heat shield system 1 and the waste heat utilization system 3 in real time and controlling the circulating water pump to regulate the water flow of the whole system;
the circulation control system 4 comprises a heat shield temperature sensor 401, a heat shield signal acquisition circuit 402, a heat shield signal control circuit 403, a waste heat utilization temperature sensor 404, a waste heat utilization signal acquisition circuit 405, a waste heat utilization signal control circuit 406 and a controller 407;
the heat shield temperature sensor 401 is arranged at the outlet end of the heat shield 103, the detected temperature is transmitted to the controller 407 through a heat shield signal acquisition circuit 402, a signal output by the controller 407 is transmitted to the port I101 of the circulating water pump through a heat shield signal control circuit 403, the rotating speed of the circulating water pump 101 is changed according to the temperature, and the loop water flow is adjusted.
The waste heat utilization temperature sensor 404 is arranged at the outlet end of the heat dissipation device 303, the detected temperature is transmitted to the controller 407 through the waste heat utilization signal acquisition circuit 405, a signal output by the controller 407 is transmitted to the port of the circulating water pump II 301 through the waste heat utilization signal control circuit 406, the rotating speed of the circulating water pump II 301 is changed according to the temperature, and the loop water flow is adjusted.
The working process of the workshop heat insulation and waste heat recycling system comprises the following steps: a high radiant heat device 6 for emitting high radiant heat is provided in the plant 5, the high radiant heat device 6 emits a large amount of high radiant heat when operating, and a heat shield 103 is provided outside the high radiant heat device 6 and encloses the same. The heat absorbing plate 7, the header 12, the calandria 13 and other components inside the heat shield 103 absorb the radiant heat, and at the same time, the cold water in the heat storage water tank 203 flows into the heat shield 103 through the heat shield water inlet pipe 102 to exchange heat, and the cold water absorbs the radiant heat on the heat absorbing plate 7 and then is converted into high-temperature hot water, and flows out from the outlet end of the heat shield 103 and then flows into the heat storage water tank 203 through the heat shield water outlet pipe 104. When a user needs hot water, the hot water in the hot water storage tank 203 is supplied into the heat sink 303 through the heat sink water supply pipe 302, and the circulating water flowing out of the outlet end of the heat sink 303 flows into the hot water storage tank 203 through the heat sink water return pipe 304 to be recycled. Meanwhile, a part of the hot water is consumed when supplied to the user, which causes a reduction in the amount of water in the hot water storage tank 203, and a water replenishing pipe 201 and a float valve 202 are provided in the upper portion 203 of the hot water storage tank to automatically replenish water in order to maintain the water level in the tank. On the other hand, the controller 407 of the circulation control system 4 is connected with the heat shield temperature sensor 401 through a heat shield signal acquisition circuit 402, the acquired water temperature at the outlet end of the heat shield 103 is transmitted to the controller 407 through the heat shield signal acquisition circuit 402, the water temperature is monitored, and the controller 407 controls the rotating speed of the circulation water pump I101 according to the water temperature to adjust the loop water flow;
the controller 407 of the circulation control system 4 is connected with the waste heat utilization temperature sensor 404 through a waste heat utilization signal acquisition circuit 405, the acquired water temperature at the outlet end of the heat dissipation device 303 is transmitted to the controller 407 through the waste heat utilization signal acquisition circuit 405, the water temperature is monitored, the controller 407 controls the rotating speed of the circulating water pump ii 301 according to the water temperature, and the loop water flow is adjusted, wherein the controller 407 can adopt a computer, a single chip microcomputer or an OMEGA CN32511/4DIN type temperature/process controller.
The working principle of the heat shield 103 in the invention is as follows:
(1) the radiant heat released by the high radiant heat equipment is radiated to the heat absorbing plate 7 of the heat shield, the heat absorbing plate 7 (heat collecting ribs) and the high radiant heat absorbing coating 8 can effectively absorb the high radiant heat, and the heat absorbing plate 7 absorbs the radiant heat to obtain the radiant heat.
(2) The heat exchange fluid enters the header 12 arranged at the lower side of the heat shield transversely in the heat shield through the heat shield water inlet pipe 102, the heat exchange fluid flows into the calandria 13 vertically distributed with the winding flow generator 14 after being collected in the header 12 at the lower side, the winding flow generator 14 can increase the winding flow of the heat exchange fluid and the calandria, reduce the laminar flow state, reduce the thickness of the laminar flow bottom layer, enhance the turbulent flow state and improve the heat exchange; the heat exchange fluid fills the row pipes 13 and then flows into the header 12 transversely arranged on the upper side of the heat shield, and at the moment, the radiant heat energy absorbed on the heat absorbing plate 7 transfers the heat to the header 12 and the heat exchange fluid in the row pipes 13 in a heat conduction and convection heat exchange mode. And the back and the side edges of the heat absorbing plate 7 are filled with the heat insulating layer 9, so that a large amount of radiation heat energy is absorbed by heat exchange fluid in the tube, and the radiation heat is prevented from being diffused to the environment. The heat exchange fluid flows in the tubes in the whole heat shield, absorbs the radiant heat energy and converts the radiant heat energy into high-temperature heat exchange fluid, and takes away the radiant heat.
Q ═ AE α, wherein A is the area of the heat absorbing plate of the heat absorbing screen, E is the actual radiation force of the high radiation heat equipment, α is the absorption ratio of the heat absorbing screen, the heat absorbing plate of the heat absorbing screen can effectively absorb a large amount of radiation heat, and the loss of heat is avoided, after absorbing the radiation heat, the heat absorbing plate transfers the heat to the heat exchange fluid in the way of heat conduction and convection heat exchange, and the heat exchange between the inner wall of the pipe and the fluid can be calculated according to the following theoretical formula:
wherein
Is the convective heat transfer coefficient in the tube, r1Radius of the inner layer flow of the pipe, r2Is the internal radius of the tube, λ1For the laminar flow bottom heat conductivity coefficient of the fluid in the pipe, the winding generator arranged in the heat shield exhaust pipe can increase the winding of the heat exchange fluid and the heat exchange fluid in the pipe, reduce the laminar flow state, reduce the thickness of the laminar flow bottom layer, enhance the turbulent flow state and improve the heat exchange.
A workshop heat insulation and waste heat recycling method comprises the following steps:
the heat shield system 1 is used for blocking the radiant heat released by the high radiant heat equipment and absorbing the radiant heat, and cold water flowing into the heat shield is converted into high-temperature hot water;
the heat storage system 2 stores the hot water flowing out of the heat shield outlet end of the heat shield system into the heat storage water tank and performs water supplement on the heat storage water tank;
the waste heat utilization system 3 supplies hot water in the heat storage water tank to a user;
the circulation control system 4 monitors the water temperature of the heat shield system 1 and the waste heat utilization system 3 in real time and controls the circulating water pump to adjust the water flow of the whole system.
Further, the method specifically comprises the following steps: the heat shield 103 of the heat shield system 1 is provided outside the high radiant heat apparatus and encloses it; the heat absorption plate 7, the header 12 and the calandria 13 in the heat shield 103 absorb the radiant heat, meanwhile, the cold water in the heat storage water tank 203 flows into the heat shield 103 through the heat shield water inlet pipe 102 for heat exchange, the cold water absorbs the radiant heat on the heat absorption plate 7 and is converted into high-temperature hot water, and the high-temperature hot water flows out of the outlet end of the heat shield 103 and then flows into the heat storage water tank 203 through the heat shield water outlet pipe 104;
when a user needs hot water, the hot water in the hot water storage tank 203 is supplied into the heat sink 303 through the heat sink water supply pipe 302, and the circulating water flowing out of the outlet end of the heat sink 303 flows into the hot water storage tank 203 through the heat sink water return pipe 304 to be recycled. Meanwhile, when the hot water is supplied to a user, a part of the hot water is consumed, so that the water quantity in the hot water storage tank 203 is reduced, and in order to keep the water level height in the water storage tank, a water replenishing pipe 201 and a float valve 202 are arranged on the upper part 203 of the hot water storage tank for automatically replenishing water;
on the other hand, the controller 407 of the circulation control system 4 is connected with the heat shield temperature sensor 401 through a heat shield signal acquisition circuit 402, the acquired water temperature at the outlet end of the heat shield 103 is transmitted to the controller 407 through the heat shield signal acquisition circuit 402, the water temperature is monitored, and the controller 407 controls the rotating speed of the circulation water pump I101 according to the water temperature to adjust the loop water flow;
the controller 407 of the circulation control system 4 is connected with the waste heat utilization temperature sensor 404 through a waste heat utilization signal acquisition circuit 405, the acquired water temperature at the outlet end of the heat dissipation device 303 is transmitted to the controller 407 through the waste heat utilization signal acquisition circuit 405, the water temperature is monitored, and the controller 407 controls the rotating speed of the circulating water pump II 301 according to the water temperature to adjust the loop water flow.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a workshop is thermal-insulated and waste heat recovery utilizes system which characterized in that: the system comprises a heat shield system (1), a heat storage system (2) and a waste heat utilization system (3);
the heat shield system (1) is used for blocking the diffusion of radiant heat released by high radiant heat equipment, absorbing the radiant heat and converting cold water flowing into the heat shield into high-temperature hot water;
the heat storage system (2) is used for storing hot water flowing out of the heat shield outlet end of the heat shield system into the heat storage water tank and supplementing water to the heat storage water tank;
the waste heat utilization system (3) is used for supplying hot water in the hot water storage tank to a user.
2. The plant heat insulation and waste heat recovery system according to claim 1, characterized in that: the heat shield system (1) comprises a circulating water pump I (101), a heat shield water inlet pipe (102), a heat shield (103) and a heat shield water outlet pipe (104); the heat shield (103) is arranged outside the high radiant heat equipment (6), the high radiant heat equipment (6) is sealed, the heat shield is used for preventing radiant heat released by the high radiant heat equipment (6) from diffusing outwards, and meanwhile, the heat absorption plate (7), the header (12) and the calandria (13) in the heat shield (103) can absorb the radiant heat and convert the radiant heat into high-temperature heat exchange fluid;
wherein the header (12) is transversely arranged in the heat shield (103), the calandria (13) is longitudinally arranged in the heat shield (103) and is contacted with the heat absorbing plate (7), the header (12) is communicated with the calandria (13), and the header (12) is respectively connected with the heat shield water inlet pipe (102) and the heat shield water outlet pipe (104); cold water flows into the heat shield (103) through the heat shield water inlet pipe (102) for heat exchange, the cold water absorbs the radiant heat of the internal components of the heat shield (103) and is converted into high-temperature hot water, and the high-temperature hot water flows out of the heat shield water outlet pipe (104) and is transported to the heat storage water tank (203) in the heat storage system (2); a circulating water pump I (101) is arranged on the heat shield water inlet pipe (102).
3. The plant heat insulation and waste heat recovery system according to claim 1 or 2, characterized in that: the heat shield (103) comprises a heat absorbing plate (7), a shell (10), a heat shield water inlet pipe (102), a heat shield water outlet pipe (104), a clamp (11), a header (12), a discharge pipe (13) and a plug (15); the heat exchange fluid enters and exits the interior of the heat shield through the heat shield water inlet pipe (102), and the heat shield water outlet pipe (104) and the heat shield water inlet pipe (102) are tightly connected to the headers (12) on the upper side and the lower side of the heat shield through the clamps (11); the other end of the upper side header (12) is tightly plugged by a plug (15) to prevent heat exchange fluid from flowing out, one end of the lower side header (12) of the heat shield is externally connected with a heat shield water inlet pipe (102), the other end of the lower side header is tightly plugged by the plug (15), the upper side header (12) and the lower side header (12) are communicated through a plurality of exhaust pipes (13), a heat absorption plate (7) is arranged between every two adjacent exhaust pipes (13), the heat absorption plate (7) is tightly contacted with the exhaust pipes (13), and the heat exchange fluid flows in the upper side header (12) and the lower side header (13) and the exhaust pipes (13) to absorb the radiation energy obtained on the heat absorption plate (7), is converted into.
4. A heat shield for preventing a high radiant heat apparatus from radiating heat to the outside according to claim 3, wherein: the shell (10) seals the heat absorbing plate (7) away from the back side of the high radiant heat equipment, the header (12) and the exhaust pipe (13) tightly to form a whole closed heat shield, and only the heat absorbing side exposed out of the heat absorbing plate (7) is outside; the heat absorption side of the heat absorption plate (7) is exposed, and heat insulation layers (9) are filled between the other parts of the heat absorption plate (7) and the shell (10).
5. The heat shield for preventing the high radiant heat apparatus from radiating heat to the outside as claimed in claim 4, wherein: the heat absorption side of the heat absorption plate (7) is exposed, and a layer of thin rock wool is filled between the other part of the heat absorption plate (7) and the heat insulation layer (9).
6. The plant heat insulation and waste heat recovery system according to claim 1, characterized in that: the heat storage system (2) comprises a water replenishing pipe (201), a ball float valve (202), a hot water storage tank (203), an overflow pipe (204), a water drain valve (205) and a water drain pipe (206); a water replenishing pipe (201) is arranged at the upper part of the heat storage water tank (203) and is used for ensuring that the water level in the heat storage water tank (203) is constant, a ball float valve (202) is arranged at the upper end of the water level in the heat storage water tank (203), and an overflow pipe (204) is arranged in the heat storage water tank and is used for preventing the water level from being overhigh and controlling the internal pressure of the heat storage water tank (203); a drain valve (205) and a drain pipe (206) are arranged at the lower end of the hot water storage tank (203).
7. The plant heat insulation and waste heat recovery system according to claim 1, characterized in that: the waste heat utilization system (3) comprises a circulating water pump II (301), a heat dissipation equipment water supply pipe (302), heat dissipation equipment (303) and a heat dissipation equipment water return pipe (304); one end of a heat dissipation device water supply pipe (302) is connected with a heat storage water tank (203) of the heat storage system (2), the other end of the heat dissipation device water supply pipe is connected with a heat dissipation device (303), a circulating water pump II (301) is arranged on the heat dissipation device water supply pipe (302), and circulating water flowing out of the outlet end of the heat dissipation device (303) flows into the heat storage water tank (203) of the heat storage system (2) through a heat dissipation device water return pipe (304).
8. The plant heat insulation and waste heat recovery system according to claim 1, characterized in that: also comprises a circulation control system (4);
the circulation control system (4) is used for monitoring the water temperature flowing out of the heat shield system (1) and the water temperature flowing out of the waste heat utilization system (3) in real time and controlling the circulating water pump to adjust the water flow of the whole system;
the circulation control system (4) comprises a heat shield temperature sensor (401), a heat shield signal acquisition circuit (402), a heat shield signal control circuit (403), a waste heat utilization temperature sensor (404), a waste heat utilization signal acquisition circuit (405), a waste heat utilization signal control circuit (406) and a controller (407);
the heat shield temperature sensor (401) is arranged at the outlet end of the heat shield (103), the detected temperature is transmitted to the controller (407) through the heat shield signal acquisition circuit (402), the signal output by the controller (407) is transmitted to the port of the circulating water pump I (101) through the heat shield signal control circuit (403), the rotating speed of the circulating water pump (101) is changed according to the temperature, and the loop water flow is adjusted.
The waste heat utilization temperature sensor (404) is arranged at the outlet end of the heat dissipation device (303), the detected temperature is transmitted to the controller (407) through the waste heat utilization signal acquisition circuit (405), a signal output by the controller (407) is transmitted to the port of the circulating water pump II (301) through the waste heat utilization signal control circuit (406), the rotating speed of the circulating water pump II (301) is changed according to the temperature, and the flow rate of a loop water is adjusted.
9. A workshop heat insulation and waste heat recycling method is characterized by comprising the following steps: the method comprises the following steps:
the heat shield system (1) is used for blocking the radiant heat released by the high radiant heat equipment and absorbing the radiant heat, and cold water flowing into the heat shield is converted into high-temperature hot water;
the heat storage system (2) stores the hot water flowing out of the heat shield outlet end of the heat shield system into the heat storage water tank and replenishes the water in the heat storage water tank;
the waste heat utilization system (3) supplies hot water in the heat storage water tank to a user;
the circulation control system (4) monitors the water temperature of the heat shield system (1) and the waste heat utilization system (3) in real time and controls the circulating water pump to adjust the water flow of the whole system.
10. The workshop heat insulation and waste heat recovery method according to claim 9, characterized in that:
the heat shield (103) of the heat shield system (1) is arranged outside the high radiant heat equipment and seals the high radiant heat equipment; radiant heat is absorbed by a heat absorption plate (7), a header pipe (12) and a discharge pipe (13) in the heat insulation screen (103), meanwhile, cold water in the heat storage water tank (203) flows into the heat insulation screen (103) through a heat insulation screen water inlet pipe (102) for heat exchange, the cold water absorbs the radiant heat on the heat absorption plate (7) and then is converted into high-temperature hot water, and the high-temperature hot water flows out of the outlet end of the heat insulation screen (103) and then flows into the heat storage water tank (203) through a heat insulation screen water outlet pipe (104);
when a user needs hot water, the hot water in the hot water storage tank (203) is supplied into the heat sink (303) through the heat sink water supply pipe (302), and circulating water flowing out of the outlet end of the heat sink (303) flows into the hot water storage tank (203) through the heat sink water return pipe (304) to be recycled. Meanwhile, when the hot water is supplied to a user, a part of the hot water is consumed, so that the water quantity in the hot water storage tank (203) is reduced, and in order to keep the water level height in the water tank, a water replenishing pipe (201) and a ball float valve (202) are arranged on the upper part (203) of the hot water storage tank for automatically replenishing water;
on the other hand, a controller (407) of the circulation control system (4) is connected with a heat shield temperature sensor (401) through a heat shield signal acquisition circuit (402), the acquired water temperature at the outlet end of the heat shield (103) is transmitted to the controller (407) through the heat shield signal acquisition circuit (402), the water temperature is monitored, and the controller (407) controls the rotating speed of the circulation water pump I (101) according to the water temperature to adjust the water flow of a loop;
the controller (407) of the circulation control system (4) is connected with the waste heat utilization temperature sensor (404) through a waste heat utilization signal acquisition circuit (405), the acquired water temperature at the outlet end of the heat dissipation device (303) is transmitted to the controller (407) through the waste heat utilization signal acquisition circuit (405), the water temperature is monitored, and the controller (407) controls the rotating speed of the circulating water pump II (301) according to the water temperature to adjust the water flow of the loop.
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| CN201911132773.4A CN110864350A (en) | 2019-11-19 | 2019-11-19 | Workshop heat insulation and waste heat recycling system and method |
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| CN201911132773.4A CN110864350A (en) | 2019-11-19 | 2019-11-19 | Workshop heat insulation and waste heat recycling system and method |
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