CN217197313U

CN217197313U - Heat recovery laminating system

Info

Publication number: CN217197313U
Application number: CN202123232761.4U
Authority: CN
Inventors: 柯泳彬; 刘锦琼; 林健民; 孙朋可; 郭秉坚; 马栋杰
Original assignee: Shengyi Technology Co Ltd
Current assignee: Shengyi Technology Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-08-16
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a heat recovery lamination system, its a plurality of lamination systems connect in parallel between a hot oil groove and a heat recovery system, and heat recovery system includes the recovery oil groove, first heat exchanger and first water tank, the recovery oil groove links to each other with each layer pressure system and is used for forming first circulation circuit, first heat exchanger respectively with the recovery oil groove, first water tank links to each other and forms first, second cooling circulation circuit, lamination system's hot media oil discharges to after retrieving the oil groove, the hot media oil is cooled by the cooling water that second circulation circuit inner loop flows when first cooling circulation circuit inner loop flows, hot media oil after the cooling returns lamination system, heat energy in the first water tank is used for supplying with can the equipment. The utility model discloses can realize the recovery of a large amount of heat energy, avoid a large amount of heat energy in the system to be wasted, realize energy saving and consumption reduction, heat recovery mode is stable, solves the unstable problem of heat supply after retrieving.

Description

Heat recovery lamination system

Technical Field

The utility model relates to a heat recovery unit especially relates to a heat recovery lamination system suitable for cold and hot press.

Background

In the pressing production process of the copper-clad laminate, the laminate pressing system can heat, keep the temperature and cool the product according to the requirements of the production process. The laminated board press is provided with a heating and cooling circulation loop, in the whole circulation process, a boiler always provides a heat source, heat medium oil in a hot oil groove of a system is heated and kept at a stable temperature through the boiler, so that heat energy is provided for the press, a cooler is used as a cold source, and the heat medium oil is cooled through cooling water.

The heat medium oil in the press and the circulating pipeline is heated and cooled circularly along with the change of the production stage, in the production process, except that a small part of heat energy is taken away by a product, the heat energy stored in the heat medium oil is taken away by cooling water of a cooler, the heat energy can be completely lost and cannot be recycled, and the heat medium oil belongs to large energy waste in the whole workshop.

In order to reduce energy waste, it is common practice to add an accumulator in the circulation loop of the hot oil system, but this method can only recover heat in one circulation pipeline, and the recovery of heat energy is limited. Another existing method is to introduce the heat of the hot oil system into the hot water pool, and the heat energy recovery is relatively high, but the following defects still exist in the method: the cooling time of one or more presses is different, so that the supply of the hot water pool is unstable; secondly, the temperature of the heating medium oil in the heat exchanger in the hot water pool is about 200 ℃, the temperature is high, the impact on the heat exchanger is large, the steel of the heat exchanger is easy to corrode and age, and the system safety is reduced.

Therefore, it is necessary to provide a heat recovery laminated system having a large heat recovery amount, a reduced level of thermal shock, and an increased service life of a cooler in the system, so as to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat recovery lamination system that heat recovery volume is big, reduce cold and hot impact degree, improve cooler life in the system.

In order to achieve the above purpose, the technical scheme of the utility model is that: providing a heat energy recovery laminating system, which comprises a hot oil tank, at least one laminating system and a heat energy recovery system; wherein each of the lamination systems is connected to the hot oil tank to form a heating circulation loop; the heat energy recovery system comprises a recovery oil tank, a first heat exchanger and a first water tank, wherein the recovery oil tank is connected with each laminating system to form a first circulation loop, the recovery oil tank is also connected with the first heat exchanger to form a first cooling circulation loop, the first heat exchanger is connected with the first water tank to form a second cooling circulation loop, and the first water tank is connected with energy utilization equipment and contains cooling water; after the heat medium oil of the laminating system is discharged to the recovery oil tank, the heat medium oil is cooled by the cooling water circulating in the second cooling circulation circuit while circulating in the first cooling circulation circuit, the cooled heat medium oil is returned to the laminating system, and the heat energy in the first water tank is used for supplying the energy-using equipment.

Preferably, the heat energy recovery system further comprises a first oil pipeline and a first oil return pipeline, the recovery oil groove is communicated with the output end of the laminating system through the first oil pipeline, the recovery oil groove is communicated with the input end of the laminating system through the first oil return pipeline, the hot medium oil in the laminating system is conveyed to the recovery oil groove through the first oil pipeline, and the hot medium oil cooled in the recovery oil groove returns to the laminating system through the first oil return pipeline.

Preferably, the recovered oil tank is communicated with one side of the first heat exchanger through a first pipeline and a second pipeline, and the recovered oil tank, the first pipeline, the first heat exchanger and the second pipeline form the first cooling circulation loop; the first water tank is communicated with the other side of the first heat exchanger through a third pipeline and a fourth pipeline, and the first water tank, the third pipeline, the first heat exchanger and the fourth pipeline form the second cooling circulation loop.

Preferably, an oil pump is arranged on the first pipeline or/and the second pipeline, and a water pump is arranged on the third pipeline or/and the fourth pipeline.

Preferably, the heat energy recovery lamination system further comprises a number of cooling systems corresponding to the number of lamination systems, each cooling system is connected to one lamination system to form a second circulation loop, and the cooling system cools the heat medium oil while circulating in the second circulation loop.

Preferably, each cooling system comprises a second heat exchanger and a second water tank, and two ends of the second heat exchanger are respectively communicated with the input end and the output end of the laminating system to form the second cooling loop; meanwhile, the second heat exchanger is communicated with the second water tank through a fifth pipeline and a sixth pipeline to form a third cooling circulation loop, cooling water is contained in the second water tank, and when the heat medium oil circularly flows in the second cooling loop, the heat medium oil is cooled by the cooling water circularly flowing in the third cooling circulation loop.

Preferably, the laminating system includes a press, a second oil pipeline and a second oil return pipeline, the input end of the press is communicated with the hot oil tank through the second oil pipeline, the output end of the press is communicated with the hot oil tank through the second oil return pipeline, the hot oil tank, the second oil pipeline, the press and the second oil return pipeline form the heating circulation loop, and hot medium oil provided by the hot oil tank flows in the heating circulation loop to heat the press.

Preferably, the recovered oil tank is connected to the second oil return pipeline through a first switching valve and is connected to the second oil delivery pipeline through a second switching valve, and the lamination system is switched between a heating stage and a cooling stage through switching of the first switching valve and the second switching valve.

Preferably, the laminating system further comprises an energy accumulator connected in parallel to the press to form a third circulation loop, the heat medium oil in the press can be discharged to the energy accumulator for storage when the press is in the cooling stage, and the heat medium oil in the energy accumulator is input into the press again when the press is in the heating stage.

Preferably, different cooling stages of the laminating system are realized by switching the first circulation loop, the second circulation loop and the third circulation loop, and different heating stages of the laminating system are realized by switching the heating circulation loop and the third circulation loop, respectively.

Compared with the prior art, because the utility model discloses a heat recovery lamination system, every heat recovery system all includes the recovery oil groove, first heat exchanger and first water tank, the recovery oil groove links to each other with each lamination system and is used for forming first circulation circuit, the recovery oil groove still links to each other and forms first cooling circulation circuit with first heat exchanger, first heat exchanger links to each other with first water tank and forms second cooling circulation circuit, first of all, through first cooling circulation circuit, second cooling circulation circuit is in the circulation heat transfer in-process always, therefore, continuously carry out the heat transfer to the recovery oil groove, cool down the high temperature heat medium oil in the recovery oil groove, can reduce the temperature of the heat medium oil that gets into in the first heat exchanger by the recovery oil groove, reduce the cold and hot impact degree to first heat exchanger, improve the life of first heat exchanger; secondly, the heat medium oil still circulates in the first cooling circulation loop, so that even if the first heat exchanger is broken, the safety problem caused by direct contact of cooling water and high-temperature heat medium oil in a press system can be avoided, and the safety of the cooling system is improved; moreover, a plurality of lamination systems are connected simultaneously through a heat recovery system, and the heat recovery volume is big to can supply other energy-consuming equipment with the heat energy of retrieving in the first water tank steadily, avoid a large amount of heat energy in the system to be wasted, realize energy saving and consumption reduction, and the heat recovery mode is stable, solves the unstable problem of heat supply among the prior art.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the heat recovery lamination system of the present invention.

Fig. 2 is a schematic structural view of another embodiment of the heat recovery lamination system of the present invention.

Figure 3 is a simplified schematic diagram of the heat recovery system of figure 2 in connection with a laminating system.

Figure 4 is a schematic view of the laminating system of figure 3 in a first cooling stage.

Fig. 5 is a schematic view of the lamination system of fig. 3 in a second cooling stage.

Fig. 6 is a schematic view of the laminating system of fig. 3 in a third cooling stage.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout. The heat energy recovery laminating system 1 provided by the present invention is mainly suitable for pressing production in the electronic industry, but not limited to this, and can also be used in other industries.

Referring now to fig. 1-2, the heat recovery lamination system 1 of the present invention includes a hot oil tank 100, at least one lamination system 200, and a heat recovery system 300. Wherein the hot oil tank 100 is connected to the boiler system 500, the boiler system 500 is used for heating the hot oil in the hot oil tank 100, and the structure of the boiler system 500 and the principle thereof are conventional in the art and will not be described in detail. Each laminating system 200 is connected to the hot oil tank 100 to form a heating circulation loop, and each laminating system 200 is heated by the hot oil tank 100; meanwhile, the thermal energy recovery system 300 is connected to each lamination system 200, and is used for cooling each lamination system 200 and recovering a large amount of thermal energy, and the recovered thermal energy is used for supplying other energy utilization devices and supplying heat stably.

In the preferred embodiment of the present invention, the laminating system 200 is provided in plurality, each laminating system 200 is connected in parallel between the hot oil tank 100 and the heat energy recovery system 300, each laminating system 200 is heated by one hot oil tank 100, and each laminating system 200 is cooled and heat energy recovered by one heat energy recovery system 300, the heat energy recovery amount is large, and the apparatus structure is simplified.

Referring to fig. 1 to 3, in the present invention, a thermal energy recovery system 300 includes a recovery oil tank 310, a first heat exchanger 320, and a first water tank 330. The oil recovery tank 310 is connected to each lamination system 200 to form a first circulation loop, the oil recovery tank 310 is further connected to the first heat exchanger 320 to form a first cooling circulation loop, the first heat exchanger 320 is further connected to the first water tank 330 to form a second cooling circulation loop, the first water tank 330 contains cooling water, and the first water tank 330 is connected to the energy utilization device. When the laminating system 200 is in the cooling stage, the high temperature heat medium oil in the laminating system 200 is discharged to the recovered oil tank 310, the high temperature heat medium oil is cooled by the cooling water circulating in the second cooling circulation circuit while circulating in the first cooling circulation circuit, and the cooled low temperature heat medium oil is returned to the laminating system 200 from the recovered oil tank 310.

The utility model discloses in, each lamination system 200 all can realize the cooling through heat recovery system 300, and heat recovery system 300 retrieves the heat energy that the cooling produced, and the heat recovery volume is big, and the heat energy of retrieving in the first water tank 330 is used for supplying with the energy consumption equipment avoids a large amount of heat energy to be wasted in the system, realizes energy saving and consumption reduction to the heat supply is stable. Furthermore, through the arrangement of the oil recovery groove 310 and the first heat exchanger 320, the first cooling circulation loop and the second cooling circulation loop are always in continuous circulation heat exchange, heat exchange is continuously carried out on the oil recovery groove 310, the high-temperature heat medium oil in the oil recovery groove 310 is cooled, the low-temperature heat medium oil is supplied to the laminating system 200, the laminating system 200 is cooled, the cold and heat impact degree of the first heat exchanger 320 can be reduced, the service life of the first heat exchanger 320 in the system is prolonged, and meanwhile, when the first heat exchanger 320 is broken, the high-temperature heat medium oil in the laminating system 200 is directly contacted with cooling water, and the safety of the cooling system is improved.

With continued reference to fig. 1-3, the thermal energy recovery system 300 further includes a first oil delivery pipeline 340 and a first oil return pipeline 350, the recovered oil tank 310 is connected to the output end of the lamination system 200 through the first oil delivery pipeline 340, the recovered oil tank 310 is connected to the input end of the lamination system 200 through the first oil return pipeline 350, the lamination system 200, the first oil delivery pipeline 340, the recovered oil tank 310 and the first oil return pipeline 350 form the first circulation loop, the high-temperature thermal medium oil in the lamination system 200 is delivered to the recovered oil tank 310 through the first oil delivery pipeline 340, and the low-temperature thermal medium oil cooled in the recovered oil tank 310 returns to the lamination system 200 through the first oil return pipeline 350.

Referring to fig. 3, more specifically, the first oil pipeline 340 is connected to the output end of the lamination system 200 through a first switching valve 360, the first oil return pipeline 350 is connected to the input end of the lamination system 200 through a second switching valve 370, and the lamination system 200 can be communicated with the hot oil tank 100 or the oil recovery tank 310 through switching of the first switching valve 360 and the second switching valve 370, so that switching of the lamination system 200 between the heating stage and the cooling stage is realized. And the first switching valve 360 and the second switching valve 370 both have the functions of detection and interlocking, so that the faults of an oil pump and a pipeline caused by untimely operation can be avoided. In addition, by controlling the on-off time of the first switching valve 360 and the second switching valve 370, the respective lamination systems 200 can meet the cooling requirement and the purpose of stable heat supply of the recovered oil tank 310.

With continued reference to fig. 3, the recovered oil tank 310 is communicated with one side of the first heat exchanger 320 through a first pipeline 311 and a second pipeline 312, the recovered oil tank 310, the first pipeline 311, the first heat exchanger 320 and the second pipeline 312 form the first cooling circulation loop, and a first oil pump 313 is disposed on the first pipeline 311 or/and the second pipeline 312, in the embodiment shown in fig. 3, the first oil pump 313 is disposed on the first pipeline 311; the heat medium oil in the recovered oil tank 310 is made to flow through the first cooling circulation circuit by the first oil pump 313. Meanwhile, the first water tank 330 is communicated with the other side of the first heat exchanger 320 through a third pipeline 331 and a fourth pipeline 332, the first water tank 330, the third pipeline 331, the first heat exchanger 320 and the fourth pipeline 332 form the second cooling circulation loop, and the third pipeline 331 or/and the fourth pipeline 332 is provided with a first water pump 333, in the embodiment shown in fig. 3, the first water pump 333 is disposed on the third pipeline 331, and the cooling water in the first water tank 330 enters the first heat exchanger 320 through the third pipeline 331 and returns to the first water tank 330 through the fourth pipeline 332 under the action of the first water pump 333, in the first heat exchanger 320, the high-temperature heat medium oil flowing in the first cooling circulation circuit exchanges heat with the cooling water in the circulation flow passage in the second cooling circulation circuit, thereby cooling the high temperature heat transfer oil, and the cooled low temperature heat transfer oil returns to the recovery oil tank 310 through the second pipe 312.

With continued reference to fig. 1-3, each of the lamination systems 200 of the present invention is identical in construction, and one of them will be described as an example.

Referring to fig. 3 in particular, the laminating system 200 includes a press 210, a second oil pipeline 220, and a second oil return pipeline 230, an input end of the press 210 is connected to the hot oil tank 100 through the second oil pipeline 220, an output end of the press 210 is connected to the hot oil tank 100 through the second oil return pipeline 230, and the hot oil tank 100, the second oil pipeline 220, the press 210, and the second oil return pipeline 230 form the heating circulation loop. In addition, a second oil pump 240 is arranged on the second oil pipeline 220, a heating valve 250 is arranged on the second oil return pipeline 230, in the heating stage, under the action of the second oil pump 240, high-temperature heat medium oil in the hot oil tank 100 enters the press 210 through the second oil pipeline 220 to heat the press 210, and the high-temperature heat medium oil output by the press 210 returns to the hot oil tank 100 through the second oil return pipeline 230, that is, the heat of the press 210 is realized through the flow of the heat medium oil in the heating circulation loop.

With continued reference to fig. 3, in the present invention, the first switching valve 360 is disposed on the second oil return pipeline 230, and the first switching valve 360 is disposed between the heating valve 250 and the output end of the press 210; the second switching valve 370 is disposed on the second oil pipeline 220; the press 210 can communicate with the first circulation loop by switching the first switching valve 360 and the second switching valve 370, so as to enter the cooling stage.

Further, the laminating system 200 further includes a connection pipe 260, one end of the connection pipe 260 is connected to the heating valve 250, and the other end of the connection pipe 260 is connected to the second oil pipeline 220, specifically, to any position between the second switching valve 370 and the input port of the press 210, so that the switching between the heating stage and the cooling stage of the laminating system 200 is realized by the cooperation of the heating valve 250 and the connection pipe 260, which will be described in detail later.

With continuing reference to fig. 1-3, in the present invention, the heat energy recovery laminating system 1 further includes cooling systems 400 corresponding to the number of the laminating systems 200, each cooling system 400 is connected to the input and output ends of one laminating system 200 to form a second circulation loop, specifically connected to the input and output ends of the press 210, and the high temperature heat medium oil in the press 210 can be cooled by circulating in the second circulation loop.

As shown in fig. 3, each cooling system 400 includes a second heat exchanger 410 and a second water tank 420. In one embodiment of the present invention, the second heat exchanger 410 is connected in parallel to the second oil return line 230. Specifically, the input line 411 of the second heat exchanger 410 is connected to the end of the second oil return line 230 near the press 210 through a cooling valve 430, and the output line 412 of the second heat exchanger 410 is connected to the end of the second oil return line 230 near the hot oil sump 100. Thus, by switching the cooling valve 430, when the hot oil tank 100, the second oil pipeline 220, the press 210, and the second oil return pipeline 230 are communicated, the communication of the heating circulation loop is realized, so as to heat the press 210; and the cooling valve 430 is switched to enable the press 210 to communicate with the second heat exchanger 410, and simultaneously, when the heating valve 250 is switched to enable the second oil return pipeline 230 to communicate with the connecting pipe 260, the press 210, the second heat exchanger 410, the second oil return pipeline 230 and the connecting pipe 260 are communicated to form the second circulation loop for cooling the press 210. In the present embodiment, the piping structure of the laminating system 200 can be simplified by providing the connection pipe 260.

It is understood that the second heat exchanger 410 is not limited to the connection manner in the embodiment, for example, the input line 411 is directly connected to the second oil return line 230, the output line 412 is connected to the second oil delivery line 220, the second heat exchanger 410 is connected in parallel with the press 210, and the second circulation loop can be formed between the second heat exchanger and the press 210.

With continued reference to fig. 3, the second water tank 420 is communicated with the second heat exchanger 410 through a fifth pipeline 421 and a sixth pipeline 422 to form a third cooling circulation loop, and a second water pump 423 is disposed on the fifth pipeline 421 or/and the sixth pipeline 422, in the embodiment shown in fig. 3, the second water pump 423 is installed on the fifth pipeline 421, cooling water is contained in the second water tank 420, and under the action of the second water pump 423, the cooling water in the second water tank 420 enters the second heat exchanger 410 through the fifth pipeline 421, flows out of the second heat exchanger 410, and returns to the second water tank 420 through the sixth pipeline 422. The high-temperature heat medium oil discharged from the press 210 passes through the second heat exchanger 410, and is cooled by heat exchange with the cooling water circulating in the third cooling circulation loop in the second heat exchanger 410, and the cooled low-temperature heat medium oil flows out through the second heat exchanger 410 and returns to the press 210, thereby implementing another cooling stage of the laminating system 200.

With continued reference to fig. 1-3, in the present invention, the first oil pipeline 340 of the thermal energy recovery system 300 is not limited to be connected to the second oil return pipeline 230, for example, in another embodiment, the first oil pipeline 340 is connected to the input pipeline 411 of the second heat exchanger 410 through the first switching valve 360, and the specific connection manner can be shown in fig. 2, and the press 210 can also be connected to the oil recovery tank 310 through the switching of the first switching valve 360.

Referring now to fig. 1-3, in a more preferred embodiment of the present invention, the laminating system 200 further includes an energy accumulator 270, both ends of the energy accumulator 270 may be connected in parallel to both ends of the press 210 to form the third circulation loop with the press 210, when the press 210 is in the cooling stage, the high-temperature heat medium oil in the press 210 may be discharged to the energy accumulator 270 to be stored, and when the press 210 is in the heating stage, the high-temperature heat medium oil in the energy accumulator 270 may be input to the press 210 again.

In this embodiment, the accumulator 270 is connected in parallel to the second return line 230. Specifically, the accumulator 270 is connected between the press 210 and the cooling valve 430, one end of the accumulator 270 is connected to one end of the second oil return line 230 near the output port of the press 210, and the other end of the accumulator 270 is connected to the second oil return line 230 near the cooling valve 430 through the energy saving valve 280. Thus, when the press 210 is in the cooling stage, the third circulation loop is formed by switching the energy saving valve 280, the cooling valve 430 and the heating valve 250 to communicate the press 210, the accumulator 270, the second return oil line 230 and the connection pipe 260, the high-temperature heat medium oil in the press 210 can be discharged to the accumulator 270 for storage in the cooling stage, and the heat medium oil in the accumulator 270 can be returned to the press 210 by communicating the third circulation loop when the press 210 is in the heating stage.

The operation principle and process of the heat recovery laminating system 1 of the present invention will be described with reference to fig. 1-6.

Referring to fig. 3, when the laminating system 200 is in the heating stage, the energy saving valve 280, the cooling valve 430 and the heating valve 250 are switched to communicate with a heating circulation loop formed by the hot oil tank 100, the second oil pipeline 220, the press 210 and the second oil return pipeline 230, the high-temperature heat medium oil in the hot oil tank 100 enters the press 210 through the second oil pipeline 220 to heat the press 210, and the heat medium oil output by the press 210 returns to the hot oil tank 100 through the second oil return pipeline 230, that is, the heat medium oil circulating in the heating circulation loop heats the press 210, as shown by the arrow direction in fig. 3.

Referring to fig. 4, when the laminating system 200 is in the first cooling stage, the second oil line 220, the second oil return line 230 and the hot oil bath 100 are closed by switching the heating valve 250, and the connection pipe 260 is communicated with the second oil return line 230. Meanwhile, the energy accumulator 270 is communicated with the second oil return line 230 by switching the energy saving valve 280, and at this time, the press 210, the energy accumulator 270, the second oil return line 230 and the connection pipe 260 are communicated to form the third circulation loop, so that the hot medium oil in the press 210 can be discharged to the energy accumulator 270 for storage, as shown by the arrow direction in fig. 4, thereby realizing the cooling of the first stage of the press 210.

Referring to fig. 5, when the lamination system 200 is in the second cooling stage, the energy saving valve 280 is switched to close the accumulator 270, the first oil pipeline 340 is communicated with the second oil return pipeline 230, the first oil return pipeline 350 is communicated with the second oil pipeline 220 by switching the first adjusting valve 360 and the second switching valve 370, that is, at this time, the press 210, the second oil return pipeline 230, the first oil pipeline 340, the recovered oil tank 310, the first oil return pipeline 350 and the second oil pipeline 220 are communicated to form a first circulation loop, the high-temperature heat medium oil in the press 210 is delivered to the recovered oil tank 310 through the second oil return pipeline 230 and the first oil pipeline 340, and the low-temperature heat medium oil cooled in the recovered oil tank 310 is returned to the press 210 through the first oil return pipeline 350 and the second oil pipeline 220, so as to implement the second stage cooling of the press 210, as shown by the arrow direction in fig. 5. After the cooling is completed, the first regulating valve 360 is switched to close the first oil delivery line 340, and the second switching valve 370 is switched to close the first oil return line 350.

In the second cooling stage, the recovered oil tank 310 and the first heat exchanger 320 are continuously in heat exchange, heat exchange is continuously performed on the recovered oil tank 310, the high-temperature heat medium oil in the recovered oil tank 310 is cooled, and the low-temperature heat medium oil is supplied to the press 210, so that cooling of the press 210 is realized; the temperature of the heat transfer oil entering the first heat exchanger 320 is reduced to about 100 ℃ from the existing temperature of more than 200 ℃, the cold and hot impact degree on the first heat exchanger 320 is reduced, and the aging and corrosion degrees of the first heat exchanger 320 can be reduced. In the cooling process, a large amount of heat is recovered and supplied to other energy utilization equipment through the first water tank 330, a large amount of heat energy in the system is prevented from being wasted, energy conservation and consumption reduction are realized, and heat supply of the first water tank 330 is stable.

Referring to fig. 6, when the laminating system 200 is in the third cooling stage, the cooling valve 430 is switched to connect the second heat exchanger 410 with the press 210, and the heating valve 250 is switched to connect the connection pipe 260 with the second oil return pipe 230, at this time, the press 210, the second heat exchanger 410, the second oil return pipe 230, the connection pipe 260, and the second oil delivery pipe 220 are sequentially connected to form the second circulation loop, the high-temperature heat medium oil in the press 210 flows into the second heat exchanger 410 and is cooled in the second heat exchanger 410, and the cooled heat medium oil returns to the press 210 through the second oil return pipe 230, the connection pipe 260, and the second oil delivery pipe 220, so as to achieve the third stage cooling of the press 210, as shown by the arrow direction in fig. 6. After cooling is completed, the second heat exchanger 410 is switched off by the cooling valve 430.

In summary, different cooling stages of the laminating system 200 are realized by the first circulation loop, the second circulation loop, and the third circulation loop. However, in the embodiment without the accumulator 270, the second cooling stage and the third cooling stage are performed as they are.

When the laminating system 200 is heated again, for the embodiment with the energy accumulator 270, the energy accumulator 270 is communicated with the second oil return line 230 by switching the energy saving valve 280, that is, the third circulation loop is communicated again, so that the heat medium oil in the energy accumulator 270 is returned to the press 210 through the second oil return line 230 and the connecting pipe 260, and the heating of the first stage of the press 210 is realized, as shown in fig. 3.

When the laminating system 200 is subsequently subjected to a second stage heating, i.e., heating via hot oil bath 100; for the mode without the energy accumulator 270, the heating is directly performed through the hot oil tank 100, and the specific process is as described above and will not be repeated. Thus, different heating stages of the laminating system 200 are achieved by the heating circulation loop, the third circulation loop, circulating.

In summary, in the heat energy recovery laminated system 1 of the present invention, first, each heat energy recovery system 300 includes a recovery oil tank 310, a first heat exchanger 320 and a first water tank 330, the recovery oil tank 310 is connected to each laminated system 200 to form a first circulation loop, the recovery oil tank 310 is further connected to the first heat exchanger 320 to form a first cooling circulation loop, the first heat exchanger 320 is connected to the first water tank 330 to form a second cooling circulation loop, the first cooling circulation loop and the second cooling circulation loop are always in the process of circulating heat exchange, so that the heat exchange is continuously carried out on the recovered oil tank 310, the high-temperature heat medium oil in the recovered oil tank 310 is cooled, so that the temperature of the heat medium oil entering the first heat exchanger 320 from the recovered oil tank 310 can be reduced, the cold and hot impact degree on the first heat exchanger 320 is reduced, and the service life of the first heat exchanger 320 is prolonged; secondly, the heat medium oil still circulates in the first cooling circulation loop, so that even if the first heat exchanger 320 is broken, the safety problem caused by direct contact between cooling water and the high-temperature heat medium oil in the press 210 system can be avoided, and the safety of the cooling system is improved; furthermore, the heat energy recovery system 300 is connected with a plurality of laminating systems 200 at the same time, so that the heat energy recovery amount is large, the heat energy recovered in the first water tank 330 can be stably supplied to other energy utilization equipment, a large amount of heat energy in the system is prevented from being wasted, energy conservation and consumption reduction are realized, the heat energy recovery mode is stable, and the problem of unstable heat supply in the prior art is solved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. A thermal energy recovery lamination system, comprising:

a hot oil tank;

at least one laminating system connected to the hot oil bath to form a heating circulation loop;

the heat energy recovery system comprises a recovery oil tank, a first heat exchanger and a first water tank, wherein the recovery oil tank is connected with each laminating system to form a first circulation loop, the recovery oil tank is also connected with the first heat exchanger to form a first cooling circulation loop, the first heat exchanger is connected with the first water tank to form a second cooling circulation loop, and the first water tank is connected with energy utilization equipment and contains cooling water;

after the heat medium oil of the laminating system is discharged to the recovery oil tank, the heat medium oil is cooled by the cooling water circulating in the second cooling circulation circuit while circulating in the first cooling circulation circuit, the cooled heat medium oil is returned to the laminating system, and the heat energy in the first water tank is used for supplying the energy-using equipment.

2. The heat energy recovery lamination system according to claim 1, further comprising a first oil delivery pipe, a first oil return pipe, the recovery oil tank being in communication with an output of the lamination system through the first oil delivery pipe, the recovery oil tank being in communication with an input of the lamination system through the first oil return pipe, the hot medium oil in the lamination system being delivered to the recovery oil tank through the first oil delivery pipe, and the hot medium oil cooled in the recovery oil tank being returned to the lamination system through the first oil return pipe.

3. The thermal energy recovery laminating system of claim 1, wherein the recovery oil tank communicates with one side of the first heat exchanger through a first pipe and a second pipe, the recovery oil tank, the first pipe, the first heat exchanger, and the second pipe forming the first cooling circulation loop; the first water tank is communicated with the other side of the first heat exchanger through a third pipeline and a fourth pipeline, and the first water tank, the third pipeline, the first heat exchanger and the fourth pipeline form the second cooling circulation loop.

4. A heat recovery laminating system according to claim 3, wherein an oil pump is provided on the first pipe or/and the second pipe, and a water pump is provided on the third pipe or/and the fourth pipe.

5. The heat recovery laminating system of claim 1, further comprising cooling systems corresponding to the number of the laminating systems, each of the cooling systems being connected to one of the laminating systems to form a second circulation circuit, and the heat medium oil being cooled by the cooling systems while circulating in the second circulation circuit.

6. The heat energy recovery laminating system of claim 5, wherein each cooling system comprises a second heat exchanger and a second water tank, and two ends of the second heat exchanger are respectively communicated with the input end and the output end of the laminating system to form the second cooling loop; and meanwhile, the second heat exchanger is communicated with the second water tank through a fifth pipeline and a sixth pipeline to form a third cooling circulation loop, cooling water is contained in the second water tank, and the heat medium oil is cooled by the cooling water circulating in the third cooling circulation loop when circulating in the second cooling loop.

7. The heat energy recovery laminating system of any one of claims 5-6, wherein the laminating system comprises a press, a second oil pipeline, and a second oil return pipeline, wherein an input end of the press is communicated with the hot oil tank through the second oil pipeline, an output end of the press is communicated with the hot oil tank through the second oil return pipeline, the hot oil tank, the second oil pipeline, the press, and the second oil return pipeline form the heating circulation loop, and the hot oil supplied by the hot oil tank flows in the heating circulation loop to heat the press.

8. The thermal energy recovery lamination system of claim 7, wherein the recovery oil tank is connected to the second oil return line by a first switching valve and to the second oil delivery line by a second switching valve, and the lamination system is switched between a heating stage and a cooling stage by switching the first switching valve and the second switching valve.

9. The heat recovery laminating system of claim 7, further comprising an accumulator connected in parallel to the press to form a third circulation loop, wherein the hot oil in the press is discharged to the accumulator for storage when the press is in the cooling phase, and wherein the hot oil in the accumulator is reintroduced into the press when the press is in the heating phase.

10. The thermal energy recovery laminating system of claim 9, wherein different cooling phases of the laminating system are achieved by switching of the first circulation loop, the second circulation loop, and the third circulation loop, and different heating phases of the laminating system are achieved by switching of the heating circulation loop and the third circulation loop, respectively.