CN212108616U - Waste heat recovery system - Google Patents
Waste heat recovery system Download PDFInfo
- Publication number
- CN212108616U CN212108616U CN201922299153.1U CN201922299153U CN212108616U CN 212108616 U CN212108616 U CN 212108616U CN 201922299153 U CN201922299153 U CN 201922299153U CN 212108616 U CN212108616 U CN 212108616U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- cooling
- water
- cold
- cooling water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model provides a waste heat recovery system, include: the system comprises a cooling water output unit, a cold-heat exchanger group and a heating circulating unit; the cooling water output unit comprises a first hot water inlet pipeline, a first cooling water outlet pipeline and a water supplementing device; the heating circulation unit comprises a heat preservation water tank, a first hot water outlet pipeline, a first cooling water inlet pipeline, a second cooling water outlet pipeline, a second hot water inlet pipeline and a water supplementing pipeline, wherein the heat preservation water tank comprises a high-temperature side and a low-temperature side. The utility model has the advantages that the cooling water output unit and the sand treatment line cold-heat exchange unit are in closed circulation, cooling water does not use a cooling water tank or a cooling tower when cooling the cooling water, the original evaporation loss of the cooling water and the cooling water loss caused by cooling tower floating water are minimized, a large amount of water sources are not needed to be consumed in the production process to supplement the cooling water, and energy-saving cooling is realized; the system utilizes heating to retrieve cold water and moisturizes, has reduced a large amount of enterprises and has disposed devices such as water softener, moisturizing pump in a large number, has simplified the system complexity.
Description
Technical Field
The utility model belongs to the energy utilization field, concretely relates to waste heat recovery system.
Background
In the lost foam casting process, the molding sand and the vacuum hole pump are necessary equipment of a lost foam casting factory, the molding sand can absorb molten steel, the temperature is raised to 800-1000 ℃, and the molding sand can be buried in a box for casting again only after being cooled to normal temperature by water cooling or being naturally cooled for a long time; and equipment is also necessary for producing the vacuum pump, and when the equipment runs, the vacuum pump generates high temperature and needs to be cooled by water.
The general molding sand cooling water adopts the multiunit cooling tower to cool off, and is the same with the molding sand cooling line, and the vacuum pump also needs to adopt cooling tower and cooling water basin to carry out circulating water cooling, normal operating temperature when maintaining equipment operation.
However, such cooling often has the problems of poor cooling effect, large energy consumption of cooling tower or cooling tank in the cooling process, waste of heat and cooling water due to evaporation, and the like.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that use cooling tower cooling effect among the prior art poor, heat and cooling water are extravagant, the utility model provides a waste heat recovery system.
The specific technical scheme is as follows:
a waste heat recovery system, characterized in that the waste heat recovery system comprises: the system comprises a cooling water output unit, a cold-heat exchanger group and a heating circulating unit;
the cooling water output unit comprises a first hot water inlet pipeline connected with the cold and heat exchanger set, a first cooling water outlet pipeline connected with the cold and heat exchanger set and a water supplementing device;
cooling hot water enters the cold-heat exchange unit from the first hot water inlet pipeline for cooling and then is discharged from the first cooling water outlet pipeline;
the heating circulating unit comprises a heat preservation water tank, a first hot water outlet pipeline connected with the heat preservation water tank, a first cooling water inlet pipeline connected with the heat preservation water tank, a second cooling water outlet pipeline connected between the heat preservation water tank and the cold-heat exchange unit, a second hot water inlet pipeline connected between the heat preservation water tank and the cold-heat exchange unit and a water supplementing pipeline connected between the first cooling water outlet pipeline and the water supplementing device, wherein the heat preservation water tank comprises a high-temperature side and a low-temperature side;
and heating backwater to be heated enters the low-temperature side through the first cooling water inlet pipeline and then enters the cold-heat exchange unit through the second cooling water outlet pipeline for heating, and hot water after heating is supplied for heating through the second hot water inlet pipeline, the high-temperature side and the first hot water outlet pipeline in sequence.
Further, the cold-heat exchange unit comprises a sand treatment line cold-heat exchange unit and a water ring pump cooling unit; when the cold-heat exchange unit is a sand treatment line cold-heat exchange unit, the water supplementing device is connected with the first cooling water outlet pipeline; when the cold-heat exchange unit is a water ring pump cooling unit, the water supplementing device is connected with the first hot water inlet pipeline.
Furthermore, the first hot water inlet pipeline comprises a first hot water inlet main pipeline, a cooling tower hot water inlet pipeline and a high-temperature water inlet pipeline, a first stop valve, a flowmeter and a temperature sensor are installed on the first hot water inlet main pipeline, and a second stop valve is installed on the cooling tower hot water inlet pipeline.
Furthermore, the first cooling water outlet pipeline comprises a first cooling water outlet main pipeline, a cooling tower cooling water outlet pipeline and a low-temperature water outlet pipeline, a third stop valve and a pressure sensor are installed on the first cooling water outlet main pipeline, and a fourth stop valve is installed on the cooling tower cooling water outlet pipeline.
Further, a temperature sensor is installed on the second hot water inlet pipeline.
Furthermore, the second cooling water outlet pipeline is provided with a regulating valve, a pressure sensor, a check valve, a pipeline circulating pump and a fifth stop valve.
Further, a temperature sensor, a sixth stop valve, a pipeline circulating pump, a check valve, a pressure sensor and a flowmeter are installed on the first hot water outlet pipeline.
Furthermore, the waste heat recovery system comprises one or more cold heat exchange units, each cold heat exchange unit is respectively matched with the cooling water output unit, and all the cold heat exchange units are connected with a heating circulation unit.
Further, the heat preservation water tank is connected with a tap water pipeline, and the tap water pipeline is provided with a seventh stop valve, a pressure sensor, a water processor and an electric valve.
Furthermore, the tap water pipeline, the first hot water outlet pipeline and the second cooling water outlet pipeline are provided with filters.
Compared with the prior art, the beneficial effects of the utility model reside in that: the cooling water output unit and the sand treatment line cold-heat exchange unit are in closed circulation, a cooling water tank or a cooling tower is not used for cooling water, the original evaporation loss of the cooling water and the cooling water loss caused by cooling tower floating water are minimized, a large amount of water sources are not needed to be consumed in the production process for supplementing the cooling water, the cooling tower can stop running, and energy-saving cooling is realized; the system utilizes heating to retrieve cold water and moisturizes, has reduced a large amount of enterprises and has disposed devices such as water softener, moisturizing pump in a large number, has simplified the system complexity.
Drawings
FIG. 1 is a schematic diagram of an embodiment waste heat recovery system;
in the drawings, the components represented by the respective reference numerals are listed below:
a cooling water output unit-A, a cold and heat exchanger group-B, a heating circulation unit-C, a first hot water inlet pipeline-1, a first hot water inlet main pipeline-101, a cooling tower hot water inlet pipeline-102, a high temperature water inlet pipeline-103, a first stop valve-1011, a second stop valve-1021, a first cooling water outlet pipeline-2, a first cooling water outlet main pipeline-201, a cooling tower cooling water outlet pipeline-202, a low temperature water outlet pipeline-203, a third stop valve-2011, a fourth stop valve-2021, a water supplementing device-3, a heat preservation water tank-4, a high temperature side-401, an electric heater-4011, a low temperature side-402, a first hot water outlet pipeline-5, a sixth stop valve-501, a first cooling water inlet pipeline-6 and a second cooling water outlet pipeline-7, a second cold water outlet main pipeline-701, a second cold water outlet branch pipeline-702, a second hot water inlet pipeline-8, a second hot water inlet main pipeline-801, a second hot water inlet pipeline-802, a water supplementing pipeline-9, a sand treatment line cold heat exchange unit-10, a water ring pump cooling unit-11, a flowmeter-12, a temperature sensor-13, a pressure sensor-14, a regulating valve-15, a check valve-16, a pipeline circulating pump-17, a filter-18, a tap water pipeline-19, a seventh stop valve-1901, a water treatment device-1902 and an electric valve-1903.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Examples
A waste heat recovery system, comprising: a cooling water output unit A, a cold-heat exchanger group B and a heating circulation unit C;
the cold-heat exchange unit B comprises two sand treatment line cold-heat exchange units 10 and a water ring pump cooling unit 11; every cold heat exchange unit B is respectively joined in marriage cooling water output unit A, and all cold heat exchange unit B is connected with a heating circulation unit, and sand treatment line cold heat exchange unit operation route carries out the molding sand cooling, and water ring pump cooling unit operation route carries out the vacuum pump cooling.
The cooling water output unit A comprises a first hot water inlet pipeline 1 connected with the cold-heat exchange unit B, a first cooling water outlet pipeline 2 connected with the cold-heat exchange unit B and a water supplementing device 3;
when the cold-heat exchange unit B is a sand treatment line cold-heat exchange unit 10, the water supplementing device 3 is connected with the first cooling water outlet pipeline 2, and a water supplementing device is adopted as an enclosed automatic water supplementing device; when the cold-heat exchange unit 10 is a water ring pump cooling unit 11, the water supplementing device 3 is connected with the first hot water inlet pipeline 1, and the water supplementing device 3 is an open water supplementing device such as a cooling water tank or a cooling water tank;
the first hot water inlet pipeline 1 comprises a first hot water inlet main pipeline 101, a cooling tower hot water inlet pipeline 102 and a high-temperature water inlet pipeline 103, wherein the first hot water inlet main pipeline 101 is provided with a first stop valve 1011, a flow meter 12 and a temperature sensor 13, and the cooling tower hot water inlet pipeline 102 is provided with a second stop valve 1021; in the water ring pump cooling unit line, the first hot water inlet main pipeline is also provided with a Y-shaped filter.
The open type water supplementing device 3 is installed on the first hot water inlet pipeline 1, and water in the water supplementing device is supplemented into the system by using the operating pressure of the system.
The first cooling water outlet pipeline 2 includes a first cooling water outlet main pipeline 201, a cooling tower cooling water outlet pipeline 202 and a low-temperature water outlet pipeline 203, the first cooling water outlet main pipeline 201 is provided with a third stop valve 2011 and a pressure sensor 14, and the cooling tower cooling water outlet pipeline 202 is provided with a fourth stop valve 2022.
When the closed automatic water replenishing device 3 is installed on the first cooling water outlet pipeline 2, a constant-pressure water replenishing mode is adopted for water replenishing.
The heating circulation unit C includes a heat-insulating water tank 4, a first hot water outlet pipeline 5 connected to the heat-insulating water tank 4, a first cooling water inlet pipeline 6 connected to the heat-insulating water tank 4, a second cooling water outlet pipeline 7 connected between the heat-insulating water tank 4 and the cold heat exchanger unit B, a second hot water inlet pipeline 8 connected between the heat-insulating water tank 4 and the cold heat exchanger unit B, and a water replenishing pipeline 9 connected between the first hot water outlet pipeline 2 and the water replenishing device 3, wherein the heat-insulating water tank 4 includes a high-temperature side 401 and a low-temperature side 402;
the heat preservation water tank 4 is connected with a tap water pipeline 19, the tap water pipeline 19 is provided with a seventh stop valve 1901, a pressure sensor 14, a water treatment device 1902, an electric valve 1903 and a Y-shaped filter 18, the tap water pipeline 19 and a second cooling water outlet pipeline 7 are connected with a low-temperature side 402, a second hot water inlet pipeline 8 and a first hot water outlet pipeline 5 are connected with a high-temperature side 401, and a 98 kilowatt electric heater 4011 is arranged in the high-temperature side 401 and used for preventing freezing of the water tank. According to the calculation of 160 tons of water stored in the water tank, the power heater can meet the requirement that the temperature of the water tank rises to 0.5 ℃ per hour and can meet the design requirement of the water tank for freezing prevention, the first hot water outlet pipeline 5 is provided with the Y-shaped filter 18, and the tap water pipeline 19 is supplemented when the water of the whole system is insufficient.
The second hot water inlet pipeline 8 includes a second hot water inlet main pipeline 801 and a second hot water inlet moisture pipeline 802 connected to each cold heat exchanger unit B, and the second hot water inlet pipeline 802 is provided with a temperature sensor 13.
The second cold water outlet pipeline 701 is provided with a regulating valve 15, a pressure sensor 14, a check valve 16, a pipeline circulating pump 17, a fifth stop valve 7011 and a Y-shaped filter 18; the second cold water outlet pipeline 701 comprises a second cold water outlet main pipeline 7011 and second cold water outlet branch pipelines 7012 connected with the cold heat exchange units B respectively, the regulating valve 15 is installed on the second cold water outlet branch pipeline 7011, the pressure sensor 14, the check valve 16, the pipeline circulating pump 17, the fifth stop valve 7011 and the Y-type filter 18 are installed on the second cold water outlet main pipeline 7011, each cold heat exchange unit B corresponds to one check valve 16, one pipeline circulating pump 17 and one fifth stop valve 7011 respectively, and three sets of check valves 16, the pipeline circulating pump 17 and the fifth stop valve 7011 are connected to the second cold water outlet main pipeline 701 in parallel.
The first hot water outlet pipeline 5 is provided with a temperature sensor 13, a sixth stop valve 501, a pipeline circulating pump 17, a check valve 16, a pressure sensor 14 and a flow meter 12.
In this embodiment, the cold-hot exchanger group B uses a water source heat pump technology to realize low-temperature hot water and heat exchange to prepare high-temperature heating hot water. The main connection device includes: the heat exchanger, compressor, coolant pipeline and a series of control valves. The method comprises the steps of absorbing heat in low-temperature cooling water by using a refrigerant to achieve the purpose of cooling the cooling water, completely gasifying the refrigerant after the refrigerant is evaporated and absorbs heat, compressing the refrigerant into a liquid state by a compressor, raising the temperature, cooling the refrigerant, absorbing the heat of the refrigerant after the refrigerant is compressed and liquefied by water, and cooling the refrigerant to achieve the purpose of preparing high-temperature heating water. The types can be as follows: GH19-16-480 type waste water source set.
The operation method of the embodiment comprises the following steps:
the operation flows of the cooling water output unit A and the cold-heat exchanger group B are as follows:
hot water to be cooled is at 42.5 +/-2.5 ℃; the cooled water enters the cold-heat exchange unit from the first hot water inlet pipeline and is discharged from the first cooling water outlet pipeline at the temperature of 32.5 +/-2.5 ℃;
the operation flow of the heating circulation unit C and the cold heat exchange unit B is as follows:
heating return water to be heated enters the low-temperature side through the first cooling water inlet pipeline and then enters the cold-heat exchange unit through the second cooling water outlet pipeline at the temperature of 40 +/-5 ℃ for heating, and hot water after heating sequentially passes through the second hot water inlet pipeline and the high-temperature side and is used for heating at the temperature of 70 +/-5 ℃ from the first hot water outlet pipeline.
In the running process of the cooling water output unit A and the cold-heat exchange unit B, if the water quantity is insufficient, water in the second cooling water outlet pipeline is supplemented to the water supplementing device for the cooling water output unit to use.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A waste heat recovery system, comprising: a cooling water output unit (A), a cold-heat exchanger group (B) and a heating circulation unit (C);
the cooling water output unit (A) comprises a first hot water inlet pipeline (1) connected with the cold-heat exchange unit (B), a first cooling water outlet pipeline (2) connected with the cold-heat exchange unit (B) and a water supplementing device (3);
hot water to be cooled enters the cold-heat exchange unit (B) from the first hot water inlet pipeline (1) for cooling and then is discharged from the first cooling water outlet pipeline (2);
the heating circulation unit (C) comprises a heat preservation water tank (4), a first hot water outlet pipeline (5) connected with the heat preservation water tank (4), a first cooling water inlet pipeline (6) connected with the heat preservation water tank (4), a second cooling water outlet pipeline (7) connected between the heat preservation water tank (4) and the cold heat exchange unit (B), a second hot water inlet pipeline (8) connected between the heat preservation water tank (4) and the cold heat exchange unit (B) and a water supplementing pipeline (9) connected between the first cooling water outlet pipeline (2) and the water supplementing device (3), wherein the heat preservation water tank (4) comprises a high-temperature side (401) and a low-temperature side (402);
heating return water to be heated enters the low-temperature side (402) through the first cooling water inlet pipeline (6) and then enters the cold-heat exchange unit (B) through the second cooling water outlet pipeline (7) to be heated, and hot water after being heated sequentially passes through the second hot water inlet pipeline (8), the high-temperature side (401) and the first hot water outlet pipeline (5) to be used for heating.
2. A waste heat recovery system according to claim 1, characterized in that the cold-heat exchanger unit (B) comprises a sand treatment line cold-heat exchanger unit (10) and a water ring pump cooling unit (11); when the cold-heat exchange unit (B) is a sand treatment line cold-heat exchange unit (10), the water supplementing device (3) is connected with the first cooling water outlet pipeline (2); when the cold-heat exchange unit (B) is a water ring pump cooling unit (11), the water supplementing device (3) is connected with the first hot water inlet pipeline (1).
3. The waste heat recovery system according to claim 1, wherein the first hot water inlet pipeline (1) comprises a first hot water inlet main pipeline (101), a cooling tower hot water inlet pipeline (102) and a high-temperature water inlet pipeline (103), the first stop valve (1011), the flow meter (12) and the temperature sensor (13) are installed on the first hot water inlet main pipeline (101), and the second stop valve (1021) is installed on the cooling tower hot water inlet pipeline (102).
4. The waste heat recovery system according to claim 1, wherein the first cooling water outlet pipeline (2) comprises a first cooling water outlet main pipeline (201), a cooling tower cooling water outlet pipeline (202) and a low-temperature water outlet pipeline (203), the first cooling water outlet main pipeline (201) is provided with a third stop valve (2011) and a pressure sensor (14), and the cooling tower cooling water outlet pipeline (202) is provided with a fourth stop valve (2021).
5. A waste heat recovery system according to claim 1, characterized in that the second inlet hot water pipe (8) is fitted with a temperature sensor (13).
6. A waste heat recovery system according to claim 1, characterized in that the second outlet cooling water line (7) is equipped with a regulating valve (15), a pressure sensor (14), a check valve (16), a pipe circulation pump (17) and a fifth stop valve (7011).
7. A waste heat recovery system according to claim 1, characterized in that the first hot water outlet pipeline (5) is equipped with a temperature sensor (13), a sixth stop valve (501), a pipe circulation pump (17), a check valve (16), a pressure sensor (14) and a flow meter (12).
8. The waste heat recovery system according to claim 1, wherein the waste heat recovery system comprises one or more cold heat exchange units (B), each cold heat exchange unit (B) is respectively matched with a cooling water output unit (a), and all the cold heat exchange units (B) are connected with a heating circulation unit (C).
9. The waste heat recovery system according to claim 1, wherein the heat-preserving water tank is connected with a tap water pipeline (19), and the tap water pipeline (19) is provided with a seventh stop valve (1901), a pressure sensor (14), a water treatment device (1902) and an electric valve (1903).
10. A heat recovery system according to claim 9, characterized in that the tap water line (19), the first hot water outlet line (5) and the second cooling water outlet line (7) are provided with filters (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922299153.1U CN212108616U (en) | 2019-12-19 | 2019-12-19 | Waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922299153.1U CN212108616U (en) | 2019-12-19 | 2019-12-19 | Waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212108616U true CN212108616U (en) | 2020-12-08 |
Family
ID=73624726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922299153.1U Active CN212108616U (en) | 2019-12-19 | 2019-12-19 | Waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212108616U (en) |
-
2019
- 2019-12-19 CN CN201922299153.1U patent/CN212108616U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108005741B (en) | Cogeneration system for improving heat supply safety of back condensation and back extraction and adjustment method | |
| CN102345910B (en) | Water cool storage air conditioning system with indirect cool storage | |
| CN103423591B (en) | A kind of distributed energy utilization system for natural gas filling station and method | |
| CN203477891U (en) | Distributed energy comprehensive utilization system for natural gas station | |
| CN104729178A (en) | Power plant seawater once-through cooling system | |
| CN103034221B (en) | thermal power plant circulating water system | |
| CN107990454B (en) | Energy-saving air conditioning system using natural cold source | |
| CN211120163U (en) | L NG cold energy recovery ice making system | |
| CN105571151B (en) | A kind of solar magnetic suspension central air-conditioning heating system | |
| CN201772579U (en) | Water cold-accumulation air-conditioning device capable of accumulating cold indirectly | |
| CN212108616U (en) | Waste heat recovery system | |
| CN207907342U (en) | A kind of energy and water saving type heat pump hot-water system | |
| CN103363606B (en) | There is the multi-freezing pipe ice-storage air-conditioning system of liquid level equilibrium mechanism | |
| CN215260569U (en) | Winter raw water heating system based on waste heat of heat supply steam condensate of thermal power plant | |
| CN212204711U (en) | Heat supply system for improving total heat supply capacity of heat source | |
| CN209840253U (en) | Heat pump system for power plant waste heat cold and hot coupling utilization | |
| CN103196198B (en) | Heat-pump device of closed type ice-storage air conditioner | |
| CN107560129B (en) | Natural gas heating and air conditioner refrigeration coupling system and method | |
| CN214949303U (en) | Cooling tower anti-freezing system of low-pressure cylinder of coal burner unit under zero-output working condition | |
| CN204555473U (en) | Power plant's seawater direct-current cooling system | |
| CN212029979U (en) | Low-temperature water cooling system | |
| CN106287204B (en) | A kind of cold heat energy utilization system of car and boat refueling mother station | |
| CN218722400U (en) | Lithium bromide refrigerating and heating system utilizing flue gas waste heat | |
| CN219103375U (en) | Hot water waste heat utilization system | |
| CN103353151A (en) | Ice storage air-conditioner system capable of realizing LNG cold energy recycling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |