CN211500973U - Waste heat recycling system of screw air compressor - Google Patents
Waste heat recycling system of screw air compressor Download PDFInfo
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- CN211500973U CN211500973U CN201922259080.3U CN201922259080U CN211500973U CN 211500973 U CN211500973 U CN 211500973U CN 201922259080 U CN201922259080 U CN 201922259080U CN 211500973 U CN211500973 U CN 211500973U
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Abstract
The utility model relates to a screw compressor's waste heat recovery utilizes system, it is including the air compressor organism, waste heat recovery machine, circulation tank, hot water moisturizing pump, water storage tank, stirring station water pump and the stirring station that loop through the pipeline intercommunication each other, waste heat recovery machine is used for the interior high temperature lubricating oil of air compressor organism and the running water in the circulation tank to carry out the heat exchange, the hot water that the heat exchange in the circulation tank was accomplished passes through the hot water moisturizing pump and pumps to the water storage tank, the hot water in the water storage tank is used for heating the section of jurisdiction to stir to the stirring station through stirring station water pump. The utility model discloses have and collect heating section of jurisdiction through the heat that produces the air compressor organism during operation and stir water, can practice thrift electrical heating heat energy effectively, realize the effect of energy saving and emission reduction, environmental protection's purpose.
Description
Technical Field
The utility model belongs to the technical field of screw compressor's technique and specifically relates to a screw compressor's waste heat recovery utilizes system is related to.
Background
At present, in autumn and winter, the production of subway segments usually needs hot water for concrete production so as to improve the setting time of the segments.
The production of section of jurisdiction needs to use screw compressor machine, boiler and to mix the water heating, and the air compressor machine operation produces a large amount of heats and gives off through the forced air cooling and runs off, and the boiler produces the heat through burning diesel oil, mixes the water and passes through electric heating pipe and boiler heat exchanger heating.
The above prior art solutions have the following drawbacks: when the screw air compressor works, the temperature of circulating oil and exhaust gas is up to more than 85 ℃, and electric energy (effective output power of a motor) consumed by air compressed by the air compressor is completely converted into heat energy to be stored in the compressed air and cooling lubricating oil. The heat energy is originally discharged to the surrounding environment as waste heat by a fan, so that the greenhouse effect is generated, and the environment is polluted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a screw compressor's waste heat recovery system has and collects the heating section of jurisdiction through the heat that produces screw compressor during operation and stirs water, can practice thrift the effect of electrical heating heat energy effectively.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a screw compressor's waste heat recovery utilizes system, includes air compressor organism, waste heat recovery machine, circulation tank, hot water moisturizing pump, water storage tank, stirring station water pump and the stirring station that loops through the pipeline intercommunication each other, waste heat recovery machine is used for the internal high temperature lubricating oil of air compressor and the running water in the circulation tank to carry out the heat exchange, the hot water that the heat exchange in the circulation tank was accomplished passes through hot water moisturizing pump and draws to water storage tank, the hot water in the water storage tank is used for heating the section of jurisdiction to stir water to the stirring station through the stirring station water pump.
Through adopting above-mentioned technical scheme, carry out recycle to air compressor organism waste heat through air compressor organism waste heat recovery system, the hot water of production is used for the section of jurisdiction production, no longer need go to burn oil or burn the electricity and heat cold water, has improved the rate of utilization of the energy, reduces the emission of used heat. And the waste heat recovery of the air compressor body is beneficial to the heat dissipation of the air compressor body, so that the air compressor can operate well. Because in waste heat utilization, waste heat recovery machine has absorbed most heat, makes the operating temperature of air compressor organism in reasonable interval, reduces radiator fan operating time, reduces the consumption of electric energy, has reduced the fault rate of air compressor machine, lets life obtain better guarantee. Not only has economic benefit, but also can realize the purposes of energy conservation, emission reduction and environmental protection.
The utility model discloses further set up to: an oil inlet pipe and an oil outlet pipe positioned below the oil inlet pipe are arranged on one side of the waste heat recovery machine close to the air compressor body, and the two opposite ends of the oil inlet pipe and the oil outlet pipe are respectively communicated with the inside of the air compressor body and the inside of the waste heat recovery machine through pipelines to form a circulating oil pipeline; one side of the waste heat recovery machine close to the circulating water tank is provided with a hot water outlet pipe and a cold water inlet pipe arranged below the hot water outlet pipe, one ends of the hot water outlet pipe and the cold water inlet pipe close to the waste heat recovery machine are communicated with each other through a pipeline in the waste heat recovery machine to form a circulating water pipeline, and one ends of the hot water outlet pipe and the cold water inlet pipe far away from the waste heat recovery machine are connected with one side of the circulating water tank close to the waste heat recovery machine.
By adopting the technical scheme, the formation of the circulating oil pipeline and the circulating water pipeline in the waste heat recovery machine transfers the heat of the circulating oil pipeline with higher temperature to the circulating water pipeline with lower temperature, thereby realizing heat exchange.
The utility model discloses further set up to: the water level control device is characterized in that a first high water level probe, a first middle water level probe and a first low water level probe are arranged in the circulating water tank at intervals from top to bottom, a first liquid level relay electrically connected with the first high water level probe, the first middle water level probe and the first low water level probe is arranged on the circulating water tank, the first liquid level relay is electrically connected with an electromagnetic valve, one end of the electromagnetic valve is communicated with the circulating water tank through a pipeline, and the other end of the electromagnetic valve is communicated with a tap water pipe.
Through adopting above-mentioned technical scheme, at the in-process that water storage water tank was carried hot water to circulation tank, water level reduction in the circulation tank makes first well water level probe expose the surface of water, and first liquid level relay opens the solenoid valve automatically, and the running water supplyes the recirculated cooling water.
The utility model discloses further set up to: the water storage tank is internally provided with a second high water level probe, a second middle water level probe and a second low water level probe at intervals from top to bottom, the water storage tank is also provided with a second liquid level relay electrically connected with the second high water level probe, the second middle water level probe and the second low water level probe, one side of the water storage tank, which is far away from the circulating water tank, is provided with a stirring station water tank and a cold water replenishing pump for pumping tap water in the stirring station water tank to the water storage tank, and the second liquid level relay is electrically connected with the cold water replenishing pump.
By adopting the technical scheme, after hot water in the water storage tank is pumped to the mixing station through the mixing station water pump for production, the water level in the water storage tank is reduced, the water level probe in the second is exposed out of the water surface, the second liquid level relay automatically opens the cold water replenishing pump for replenishing water, and the water is stopped after the hot water is replenished to the position of the second high water level probe.
The utility model discloses further set up to: and a ball float valve used for storing water for the water tank of the mixing station is arranged in the water tank of the mixing station.
Through adopting above-mentioned technical scheme, the ball-cock assembly is used for carrying out the replenishment of running water to the stirring station pond.
The utility model discloses further set up to: and one side of the water storage tank, which is far away from the circulating water tank, is also provided with an electric auxiliary heating device and an electric heating water pump for pumping water in the water storage tank to the electric auxiliary heating device for reheating.
By adopting the technical scheme, the electric auxiliary heating device is used for heating the water in the water storage water tank to a proper temperature.
The utility model discloses further set up to: a water temperature detector is installed in the water storage tank and is electrically connected with the electric auxiliary heating device.
By adopting the technical scheme, the water temperature detector is used for monitoring the real-time water temperature in the water storage tank so as to transmit a signal to the electric auxiliary heating device and control the water temperature in the water storage tank to be at a proper temperature.
The utility model discloses further set up to: and the circulating water pump, the hot water replenishing pump, the cold water replenishing pump, the stirring station water pump, the electric heating water pump and the electric auxiliary heating device are controlled by the remote intelligent control system.
Through adopting above-mentioned technical scheme, long-range intelligence control system realizes the intelligent control to circulating water pump, hot water moisturizing pump, cold water moisturizing pump, stirring station water pump, electric heating water pump and electric auxiliary heating device.
To sum up, the utility model discloses a beneficial technological effect does:
1. the waste heat of the air compressor body is recycled by the waste heat recycling system of the air compressor body, the produced hot water is used for segment production, oil or electricity is not required to be removed to heat cold water, the utilization rate of energy is improved, and the discharge of waste heat is reduced;
2. the float valve is used for supplementing tap water to a pool of the mixing station;
3. the electric auxiliary heating device is used for heating water in the water storage tank to a proper temperature.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.
In the figure, 1, an air compressor body; 11. a second oil through pipe; 2. a waste heat recovery machine; 21. an oil inlet pipe; 22. an oil outlet pipe; 23. a first oil pipe; 24. a hot water outlet pipe; 25. a cold water inlet pipe; 26. a first water pipe; 3. a circulating water tank; 31. a first water inlet; 32. a first water outlet; 33. an electromagnetic valve; 4. a water storage tank; 41. a first hot water inlet; 42. a first drain port; 43. a second hot water inlet; 44. a second water outlet; 5. a mixing station; 6. a stirring station water tank; 61. a float valve; 7. an electric auxiliary heating device; 71. a third hot water outlet; 72. a third water inlet; 73. a second water passage pipe; 8. a water circulating pump; 81. a hot water replenishing pump; 82. a water pump of the mixing station; 83. electrically heating the water pump; 84. a cold water replenishing pump; 9. a first high water level probe; 91. a first mid-water level probe; 92. a first low water level probe; 93. a first level relay; 94. a water temperature detector; 95. a second high water level probe; 96. a second mid-water level probe; 97. a second low water level probe; 98. and a second level relay.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the waste heat recycling system of the screw air compressor disclosed in the present invention comprises an air compressor body 1, a waste heat recycling machine 2, a circulation water tank 3 and a water storage water tank 4 which are sequentially communicated with each other through a pipeline from left to right; one side of the water storage tank 4 close to the circulating water tank 3 is communicated with a stirring station 5 through a pipeline, and one side of the water storage tank 4 far away from the circulating water tank 3 is provided with a stirring station water tank 6 and an electric auxiliary heating device 7.
As shown in fig. 1, one side of the waste heat recovery machine 2 close to the air compressor body 1 is provided with an oil inlet pipe 21 and an oil outlet pipe 22 located below the oil inlet pipe 21, a first oil through pipe 23 communicating the oil inlet pipe 21 and the oil outlet pipe 22 is provided in the waste heat recovery machine 2, a second oil through pipe 11 communicating the oil inlet pipe 21 and the oil outlet pipe 22 is provided in the air compressor body 1, and the waste heat recovery machine 2 is communicated with the air compressor body 1 through the oil inlet pipe 21 and the oil outlet pipe 22.
As shown in fig. 1, a hot water outlet pipe 24 and a cold water inlet pipe 25 arranged below the hot water outlet pipe 24 are arranged on one side of the waste heat recovery machine 2 close to the circulating water tank 3, and a first water pipe 26 communicating the cold water inlet pipe 25 and the hot water outlet pipe 24 is arranged in the waste heat recovery machine 2; one end of the hot water outlet pipe 24, which is far away from the first water pipe 26, is communicated with one side of the circulating water tank 3, which is close to the waste heat recovery machine 2; a circulating water pump 8 for pumping cold water in the circulating water tank 3 into the waste heat recovery machine 2 is arranged between the waste heat recovery machine 2 and the circulating water tank 3, the input end of the circulating water pump 8 is communicated with the circulating water tank 3 through a pipeline, and the output end of the circulating water pump 8 is communicated with one end, far away from the waste heat recovery machine 2, of the cold water inlet pipe 25.
As shown in fig. 1 and 2, a first water inlet 31 and a first water outlet 32 located below the first water inlet 31 are arranged on one side of the circulation water tank 3 close to the water storage water tank 4, the first water inlet 31 is communicated with an electromagnetic valve 33 through a pipeline, and one end of the electromagnetic valve 33 far away from the first water inlet 31 is communicated with a tap water pipe; a hot water replenishing pump 81 is arranged between the circulating water tank 3 and the water storage tank 4, the input end of the hot water replenishing pump 81 is communicated with the first water outlet 32 through a pipeline, and the output end of the hot water replenishing pump 81 is communicated with the water storage tank 4 through a pipeline.
As shown in fig. 1 and 2, a first high water level probe 9, a first medium water level probe 91 and a first low water level probe 92 are arranged in the circulating water tank 3 at intervals from top to bottom; the circulating water tank 3 is provided with a first liquid level relay 93 which is electrically connected with the first high water level probe 9, the first medium water level probe 91 and the first low water level probe 92. The first level relay 93 is electrically connected to the solenoid valve 33 and controls the solenoid valve 33 to operate.
As shown in fig. 1 and 3, a water temperature detector for detecting the water temperature in the water storage tank 4 in real time is installed in the water storage tank 4, and the water temperature detector is electrically connected to the electric auxiliary heating device. One side of the water storage tank 4 close to the circulation tank 3 is provided with a first hot water inlet 41 and a first drain port 42 disposed below the first hot water inlet 41. The first hot water inlet 41 is communicated with the output end of the hot water replenishing pump 81 through a pipeline. A mixing station water pump 82 is arranged between the water storage tank 4 and the mixing station 5, the input end of the mixing station water pump 82 is communicated with the first water discharge port 42 through a pipeline, and the output end of the mixing station water pump 82 is communicated with the mixing station 5 through a pipeline.
As shown in fig. 1 and 3, a second hot water inlet 43 and a second water outlet 44 located below the second hot water inlet 43 are arranged on one side of the water storage tank 4 away from the circulating water tank 3; a third hot water outlet 71 and a third water inlet 72 positioned below the third hot water outlet 71 are arranged on one side of the electric auxiliary heating device 7 close to the water storage tank 4, a second water through pipe 73 communicating the third water inlet 72 with the third hot water outlet 71 is arranged in the electric auxiliary heating device 7, and the third hot water outlet 71 is communicated with the second hot water inlet 43 through a pipeline. An electric heating water pump 83 is arranged between the water storage tank 4 and the electric auxiliary heating device 7, the second water outlet 44 is fixedly connected with the input end of the electric heating water pump 83 through a pipeline, and the output end of the electric heating water pump 83 is communicated with the third water inlet 72 through a pipeline.
As shown in fig. 1 and 3, a cold water replenishing pump 84 is arranged between the water storage tank 4 and the stirring station water tank 6, an input end of the cold water replenishing pump 84 is communicated with the stirring station water tank 6 through a pipeline, and an output end of the cold water replenishing pump 84 is communicated with the water storage tank 4 through a pipeline. A ball float valve 61 for controlling the water level of the mixing station water tank 6 is arranged in the mixing station water tank 6.
As shown in fig. 1 and 3, a second high water level probe 95, a second middle water level probe 96 and a second low water level probe 97 are arranged in the water storage tank 4 at intervals from top to bottom; the water storage tank 4 is further provided with a second liquid level relay 98 electrically connected with the second high water level probe 95, the second middle water level probe 96 and the second low water level probe 97. The second level relay 98 is electrically connected with the cold water replenishing pump 84.
As shown in fig. 1 and 3, the circulating water pump 8, the hot water make-up pump 81, the cold water make-up pump 84, the mixing plant water pump 82, the electric heating water pump 83 and the electric auxiliary heating device 7 are all controlled by a remote intelligent control system.
The implementation principle of the embodiment is as follows: the air compressor body 1 generates a large amount of heat in the process of compressing air, the compressed high-temperature lubricating oil is delivered to a first oil delivery pipe 23 in the waste heat recovery machine through an oil inlet pipe 21 by using the waste heat recovery machine and then flows back to a second oil delivery pipe 11 in the air compressor body 1 along an oil outlet pipe 22, and the circulation is carried out, so that the high-temperature lubricating oil is subjected to heat transfer with water in a first water delivery pipe 26 by using a heat transfer principle when passing through the waste heat recovery machine 2; the circulating water pump 8 pumps cold water in the circulating water tank 3 from the cold water inlet pipe 25 to the first water pipe 26 in the waste heat recovery machine 2 for heat exchange, and then the cold water flows back to the circulating water tank 3 from the hot water outlet pipe 24;
when the water in the circulating water tank 3 reaches the temperature value set by the waste heat recovery machine 2 after heat exchange for a period of time, the waste heat recovery machine 2 outputs a signal to start the hot water replenishing pump 81, and the hot water replenishing pump 81 pumps the hot water in the circulating water tank 3 from the first water outlet 32 to the first hot water inlet 41 to replenish the hot water to the water storage tank 4;
after the hot water in the circulating water tank 3 is supplemented to the water storage tank 4, the water level in the circulating water tank 3 is reduced, so that the first middle water level probe 91 is exposed out of the water surface, the first liquid level relay 93 automatically opens the electromagnetic valve 33, the tap water supplements the circulating cooling water, the water level rises to submerge the first high water level probe 9, and the first liquid level relay 93 automatically closes the electromagnetic valve 33 to stop supplementing water to the circulating water tank 3;
when the weather cooling mixing plant 5 is started, hot water at a certain temperature generated by waste heat recovery is not available, the electric auxiliary heating device 7 is started, and the electric heating water pump 83 pumps water in the water storage water tank 4 from the second water outlet 44 to the third water inlet 72 for circulating heating in the electric auxiliary heating device 7;
under the effect of a remote intelligent control system, a water temperature detector is installed in the water storage tank 4 to detect the water temperature in real time, when the water temperature in the water storage tank 4 is lower than the proper water temperature set by the production of the stirring station 5, background software outputs a temperature-raising instruction, the signal amplification is carried out, the electric auxiliary heating device 7 is started to heat the water in the water storage tank 4, when the water temperature is monitored to be higher than the proper water temperature set by the production of the stirring station 5, the background software outputs a temperature-lowering instruction, the electric auxiliary heating device 7 is stopped to heat through the signal amplification, if the water temperature is continuously raised, meanwhile, the cold water replenishing pump 84 is started to pump the tap water in the stirring station water tank 6 into the water storage tank 4 to lower the temperature, and the.
After hot water in the water storage tank 4 is pumped from the first water discharge port 42 to the mixing station 5 through the mixing station water pump 82 for production, the water level in the water storage tank 4 is reduced, the second middle water level probe 96 is exposed out of the water surface, the second liquid level relay 98 automatically turns on the cold water replenishing pump 84 for replenishing water, the water is stopped being replenished to the position of the second high water level probe 95, the replenished water is monitored and fed back to start and stop the electric auxiliary heating device 7 to enter a heating cycle, and the water temperature is ensured to be constant at a proper temperature.
When hot water is not needed in hot weather, the electric auxiliary heating device can be stopped to save electric energy, a second liquid level relay of the water storage tank automatically controls a cold water replenishing pump to replenish water to the water storage tank, a stirring station water pump pumps water in the water storage tank into a stirring station from a first water discharge port for production, and a stirring station water tank adopts a ball float valve to store water in the stirring station water tank.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a screw compressor's waste heat recovery utilizes system which characterized in that: including the air compressor organism (1), waste heat recovery machine (2), circulating water tank (3), hot water moisturizing pump (81), water storage tank (4), stirring station water pump (82) and the stirring station (5) that loop through the pipeline intercommunication each other, waste heat recovery machine (2) are arranged in air compressor organism (1) high temperature lubricating oil and the running water in circulating water tank (3) to carry out the heat exchange, the hot water of the heat exchange completion in circulating water tank (3) is taken out through hot water moisturizing pump (81) to water storage tank (4), the hot water in water storage tank (4) is used for heating the section of jurisdiction to stir water through stirring station (5) water pump.
2. The waste heat recycling system of the screw air compressor as claimed in claim 1, wherein: an oil inlet pipe (21) and an oil outlet pipe (22) positioned below the oil inlet pipe (21) are arranged on one side, close to the air compressor body (1), of the waste heat recovery machine (2), and two opposite ends of the oil inlet pipe (21) and the oil outlet pipe (22) are respectively communicated in the air compressor body (1) and the waste heat recovery machine (2) through pipelines to form a circulating oil pipeline; one side that waste heat recovery machine (2) is close to circulating water tank (3) is provided with hot water outlet pipe (24) and sets up in cold water inlet tube (25) of hot water outlet pipe (24) below, the one end that hot water outlet pipe (24) and cold water inlet tube (25) are close to waste heat recovery machine (2) is through the mutual intercommunication formation circulating water pipeline of pipeline in waste heat recovery machine (2), the one end that waste heat recovery machine (2) were kept away from in hot water outlet pipe (24) and cold water inlet tube (25) is connected with one side that circulating water tank (3) are close to waste heat recovery machine (2).
3. The waste heat recycling system of the screw air compressor as claimed in claim 2, wherein: the water level control device is characterized in that a first high water level probe (9), a first medium water level probe (91) and a first low water level probe (92) are arranged in the circulating water tank (3) at intervals from top to bottom, a first liquid level relay (93) electrically connected with the first high water level probe (9), the first medium water level probe (91) and the first low water level probe (92) is arranged on the circulating water tank (3), the first liquid level relay (93) is electrically connected with an electromagnetic valve (33), one end of the electromagnetic valve (33) is communicated with the circulating water tank (3) through a pipeline, and the other end of the electromagnetic valve (33) is communicated with a tap water pipe.
4. The waste heat recycling system of the screw air compressor as claimed in claim 1, wherein: the water storage tank (4) is internally provided with a second high water level probe (95), a second medium water level probe (96) and a second low water level probe (97) at intervals from top to bottom, the water storage tank (4) is further provided with a second liquid level relay (98) electrically connected with the second high water level probe (95), the second medium water level probe (96) and the second low water level probe (97), one side of the water storage tank (4) far away from the circulating water tank (3) is provided with a stirring station (5) water tank and a cold water replenishing pump (84) for pumping tap water in the stirring station (5) water tank to the water storage tank (4), and the second liquid level relay (98) is electrically connected with the cold water replenishing pump (84).
5. The waste heat recycling system of the screw air compressor as claimed in claim 4, wherein: and a ball float valve (61) used for storing water for the water tank of the mixing station (5) is arranged in the water tank of the mixing station (5).
6. The waste heat recycling system of the screw air compressor as claimed in claim 5, wherein: and an electric auxiliary heating device (7) and an electric heating water pump (83) for pumping water in the water storage tank (4) to the electric auxiliary heating device (7) for reheating are also arranged on one side of the water storage tank (4) far away from the circulating water tank (3).
7. The waste heat recycling system of the screw air compressor as claimed in claim 6, wherein: a water temperature detector (94) is installed in the water storage tank (4), and the water temperature detector (94) is electrically connected with the electric auxiliary heating device (7).
8. The waste heat recycling system of the screw air compressor as claimed in claim 6, wherein: the hot water replenishing pump (81), the cold water replenishing pump (84), the stirring station water pump (82), the electric heating water pump (83) and the electric auxiliary heating device (7) are controlled by a remote intelligent control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922259080.3U CN211500973U (en) | 2019-12-16 | 2019-12-16 | Waste heat recycling system of screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922259080.3U CN211500973U (en) | 2019-12-16 | 2019-12-16 | Waste heat recycling system of screw air compressor |
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| CN211500973U true CN211500973U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922259080.3U Active CN211500973U (en) | 2019-12-16 | 2019-12-16 | Waste heat recycling system of screw air compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443884A (en) * | 2020-11-27 | 2021-03-05 | 浙江先博节能科技有限公司 | Central heating intelligent management system based on cloud platform |
| CN114043630A (en) * | 2021-11-18 | 2022-02-15 | 北新集团建材股份有限公司 | Automatic temperature regulating system and method for gypsum board production |
-
2019
- 2019-12-16 CN CN201922259080.3U patent/CN211500973U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443884A (en) * | 2020-11-27 | 2021-03-05 | 浙江先博节能科技有限公司 | Central heating intelligent management system based on cloud platform |
| CN114043630A (en) * | 2021-11-18 | 2022-02-15 | 北新集团建材股份有限公司 | Automatic temperature regulating system and method for gypsum board production |
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Address after: No. 1221, 1235, Dianqian 1st Road, Huli District, Xiamen City, Fujian Province, 361000 Patentee after: XIAMEN SANHANG CONCRETE CO.,LTD. Patentee after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: CCCC Third Aviation Bureau Sixth Engineering (Xiamen) Co.,Ltd. Address before: No. 1221, 1235, Dianqian 1st Road, Huli District, Xiamen City, Fujian Province, 361000 Patentee before: XIAMEN SANHANG CONCRETE CO.,LTD. Patentee before: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee before: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee before: CCCC Sanya (Xiamen) Engineering Co.,Ltd. |