CN112665186A

CN112665186A - Combined electromagnetic heating heat supply baking system for multiple regions

Info

Publication number: CN112665186A
Application number: CN202110042758.1A
Authority: CN
Inventors: 詹国胜; 李凯
Original assignee: Chengdu Tongchuang Henghe Energy Saving Technology Co ltd
Current assignee: Chengdu Tongchuang Henghe Energy Saving Technology Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-04-16

Abstract

The invention discloses a combined electromagnetic heating and heat supplying baking system for multiple regions, which comprises at least two groups of electromagnetic heating and heat supplying baking systems, wherein heat supplying water outlet pipes of the at least two groups of electromagnetic heating and heat supplying baking systems are connected through a first connecting pipe, and heat supplying water return pipes are connected through a second connecting pipe; the first connecting pipe is provided with a first connecting pipe control valve for controlling the opening and closing of the first connecting pipe, and the second connecting pipe is provided with a second connecting pipe control valve for controlling the opening and closing of the second connecting pipe. Above-mentioned scheme can solve present electromagnetic boiler heat supply baking system because of can not be applicable to the heating efficiency regulation of each intensive baking house district various operating modes well and influence the quality of baking of tobacco leaf and cause the extravagant problem of energy.

Description

Combined electromagnetic heating heat supply baking system for multiple regions

Technical Field

The invention relates to the technical field of tobacco leaf baking, in particular to a combined electromagnetic heating heat supply baking system for multiple areas.

Background

The baking of the tobacco leaves plays a decisive role in the quality of the finished tobacco leaves; in the tobacco leaf baking process, the current baking mode mainly comprises the steps of respectively conveying high-temperature gas generated by boiler combustion to each baking room heat exchanger of a bulk baking room area, and baking tobacco leaves in the baking room through heat exchange of the baking room heat exchangers; however, not only is resources such as coal wasted in the combustion process of the boiler, but also harmful gases are generated to cause environmental pollution.

For the problems of the coal-fired boiler, the electromagnetic boiler is adopted to replace the traditional coal-fired boiler as a heat source to heat circulating hot water and other media in the prior art; however, the existing electromagnetic boiler heat-supplying baking systems are respectively and independently arranged in each bulk drying room area, and still have many defects in the actual use process, for example, each drying room in each bulk drying room area needs to be heated or only part of the drying rooms need to be heated during tobacco leaf baking, but the existing electromagnetic boiler heat-supplying baking systems cannot be well applied to the heating efficiency adjustment of various working conditions in each bulk drying room area, so that the baking quality of tobacco leaves is affected and energy waste is caused.

Disclosure of Invention

The invention discloses a combined electromagnetic heating heat supply baking system for multiple areas, which aims to solve the problems that the baking quality of tobacco leaves is influenced and energy is wasted because the conventional electromagnetic boiler heat supply baking system cannot be well suitable for heating efficiency adjustment of various working conditions of various bulk drying room areas.

In order to solve the problems, the invention adopts the following technical scheme:

a combined electromagnetic heating heat supply baking system for multiple zones comprises at least two groups of electromagnetic heating heat supply baking systems, wherein heat supply water outlet pipes of the at least two groups of electromagnetic heating heat supply baking systems are connected through a first connecting pipe, and heat supply water return pipes are connected through a second connecting pipe; the first connecting pipe is provided with a first connecting pipe control valve for controlling the opening and closing of the first connecting pipe, and the second connecting pipe is provided with a second connecting pipe control valve for controlling the opening and closing of the second connecting pipe.

Optionally, the electromagnetic heating heat supply baking system comprises an electric heating water supply device, the heat supply water outlet pipe, the heat supply water return pipe and a heat exchange device arranged in the baking room; the heat supply water outlet of the electromagnetic heating water supply equipment is connected with the water inlet end of the heat exchange equipment through the heat supply water outlet pipe, and the heat supply water return port of the electromagnetic heating water supply equipment is connected with the water outlet end of the heat exchange equipment through the heat supply water return pipe.

Optionally, the electromagnetic heating water supply equipment is arranged in two groups; two sets of electromagnetic heating water supply equipment's heat supply delivery port is connected in same the heat supply outlet pipe, two sets of electromagnetic heating water supply equipment's heat supply return water mouth is connected in same the heat supply wet return, and at least one set of electromagnetic heating water supply equipment's heat supply delivery port and heat supply return water mouth are provided with the control valve.

Optionally, the electromagnetic heating water supply equipment comprises an electromagnetic hot water device and a heat preservation water tank; the holding water tank is provided with circulation outlet pipe, circulation inlet tube heat supply delivery port with heat supply return water mouth, just circulation outlet pipe with electromagnetism hot water system's heating water piping connection, the circulation inlet tube with electromagnetism hot water system's heating goes out water piping connection, the heat supply delivery port with heat supply water piping connection, heat supply return water mouth with heat supply return water union coupling.

Optionally, the heat-preservation water tank is provided with a third connecting pipe, and the third connecting pipe is provided with a third connecting pipe control valve; the heat-preservation water tanks of the two groups of electromagnetic heating water supply equipment are communicated through a third connecting pipe, and a third connecting pipe control valve is used for controlling the opening and closing of the third connecting pipe.

Optionally, the inner cavity of the heat-preservation water tank is provided with a transversely extending interlayer, and the inner cavity of the heat-preservation water tank is divided by the interlayer to form an upper cavity and a lower cavity; the interlayer is provided with an opening, and the upper cavity and the lower cavity are communicated through the opening; the circulating water outlet pipe and the heat supply water return port are arranged on the side wall of the lower cavity; the circulating water inlet pipe and the heat supply water outlet are arranged on the side wall of the upper cavity.

Optionally, an interlayer support is further arranged in the inner cavity of the heat preservation water tank, one end of the interlayer support is connected with the inner wall of the heat preservation water tank, and the other end of the interlayer support is connected with the interlayer.

Optionally, the electromagnetic water heating device includes the heating water inlet pipe, the heating water outlet pipe and at least two electromagnetic heaters connected in parallel between the heating water inlet pipe and the heating water outlet pipe.

Optionally, the electromagnetic heater comprises a cylinder body and an electromagnetic coil, the cylinder body is internally provided with a cavity, the electromagnetic coil is wound on the outer side wall of the cylinder body, and the cylinder body is provided with a water inlet and a water outlet which are respectively communicated with the cavity; the water inlet of each electromagnetic heater is respectively connected with the heating water inlet pipe, and the water outlet of each electromagnetic heater is respectively connected with the heating water outlet pipe.

The combined electromagnetic heating-heating thermal toasting system for multiple zones according to claim 2, wherein said heat exchange means comprises a water separator, a heat exchanger and a water collector; the heat exchanger is provided with at least two rows of finned tubes, water inlets of the finned tubes of each row are respectively connected with water outlets of the water distributor, and water outlets of the finned tubes of each row are respectively connected with water inlets of the water collector.

The technical scheme adopted by the invention can achieve the following beneficial effects:

the invention discloses a combined electromagnetic heating heat supply baking system for multiple areas, which can control the connection/disconnection between heat supply water outlet pipes of all the dense drying room areas through a first connecting pipe and a first connecting pipe control valve, the connection and the blockage between the heat supply water return pipes of all the dense drying room areas can be controlled through the second connecting pipe and the second connecting pipe control valve, therefore, the operation state of the combined electromagnetic heating and heat supplying baking system is flexibly regulated and controlled according to the heat required by the load operation of the heat exchange equipment in each bulk drying room area, the requirements of the tobacco leaf baking temperature in each bulk drying room area are well met, the baking quality and quality of tobacco leaves are ensured, the waste of energy caused by the fact that the electromagnetic heating and heat supplying baking system in the low-load bulk drying room area keeps a high-load operation state can be avoided, and the purpose of saving energy is well achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a combined electromagnetic heating and heat supplying baking system for multiple zones disclosed in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of the cooperative electromagnetic heating water supply apparatus disclosed in embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a baking system using a cooperative electromagnetic heating water supply apparatus disclosed in embodiment 2 of the present invention;

fig. 4 is a schematic top view of the electromagnetic water heating apparatus disclosed in embodiment 3 of the present invention;

fig. 5 is a schematic side view of an electromagnetic water heating apparatus disclosed in embodiment 3 of the present invention;

fig. 6 is a schematic structural view of an electromagnetic heater disclosed in embodiment 3 of the present invention;

FIG. 7 is a schematic sectional view of the heat-insulating water tank disclosed in embodiment 4 of the present invention;

FIG. 8 is a side view of the insulated water tank disclosed in embodiment 4 of the present invention;

FIG. 9 is a schematic front view of the heat exchange device disclosed in embodiment 5 of the present invention;

FIG. 10 is a schematic top view of the heat exchange device disclosed in embodiment 5 of the present invention;

FIG. 11 is a schematic left-side view of a heat exchange apparatus disclosed in embodiment 5 of the present invention; (ii) a

Description of reference numerals:

100-electromagnetic heater, 110-cylinder, 111-water inlet, 112-water outlet, 113-first flange, 120-electromagnetic coil, 130-magnetic strip, 140-outer brim, 150-controller, 160-cabinet, 210-heating water inlet pipe, 220-heating water outlet pipe, 221-water flow switch, 250-heating delivery pump, 112-water outlet, 113-first flange, 130-magnetic strip, 140-outer brim, 150-controller, 160-cabinet, 210-heating water inlet pipe, 220-heating water outlet pipe, 221-water flow switch, 250,

200-a heat preservation water tank, 2001-a sewage discharge pipe, 2002-a ladder stand, 2003-a third connecting pipe, 2004-a third connecting pipe control valve, 2005-a control valve, 201-a circulating water outlet pipe, 202-a circulating water inlet pipe, 203-a heat supply water outlet, 204-a heat supply water return port, 205-an interlayer, 2051-an interlayer bracket, 206-a manhole, 207-a cover body, 208-a liquid level sensor pressure guide pipe, 209-an overflow port, 230-a heat supply water outlet pipe, 240-a heat supply water return pipe, 260-a heat supply delivery pump, 270-a bypass heat supply delivery pump, 270-a heat supply delivery pump, a,

300-heat exchanger, 301-vertical part, 302-bending part, 310-water separator, 311-water outlet of water separator, 312-water inlet of water separator, 320-water collector, 321-water inlet of water collector, 322-water outlet of water collector, 330-second flange part,

400-water inlet pipe, 401-flow regulator, 402-first maintenance valve, 403-second maintenance valve, 410-bypass pipe, 411-bypass valve, 420-blowdown valve of water inlet pipe, 430-control valve of water inlet pipe,

500-water return pipe, 510-water return delivery pump, 520-water return pipe blowdown valve, 530-water return pipe control valve, 540-valve, 600-first connecting pipe, 610 first connecting pipe control valve, 700 second connecting pipe, 710 second connecting pipe control valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example 1

The embodiment of the invention discloses a combined electromagnetic heating and heat supplying baking system for multiple regions, which comprises at least two groups of electromagnetic heating and heat supplying baking systems, wherein heat supply water outlet pipes 230 of the at least two groups of electromagnetic heating and heat supplying baking systems are connected through a first connecting pipe 600, and heat supply water return pipes 240 are connected through a second connecting pipe 700; first connection pipe 600 is provided with a first connection pipe control valve 610 for controlling opening and closing of first connection pipe 600, and second connection pipe 700 is provided with a second connection pipe control valve 710 for controlling opening and closing of second connection pipe 700.

Specifically, referring to fig. 1, in order to be suitable for tobacco leaf baking operation in two dense drying room areas, the combined electromagnetic heating and heat supplying baking system may include two sets of electromagnetic heating and heat supplying baking systems, and the heat supplying water outlet pipes 230 of the two sets of electromagnetic heating and heat supplying baking systems are connected through a first connecting pipe 600, and the heat supplying water return pipes 240 are connected through a second connecting pipe 700; the first connection pipe 600 is provided with a first connection pipe control valve 610, and the second connection pipe 700 is provided with a second connection pipe control valve 710.

Wherein, when the heat transfer apparatus of every baking house or most baking houses in two bulk drying room areas all need the heat supply, two bulk drying room areas all need the high load operation promptly, can close first connecting pipe control valve 610 and second connecting pipe control valve 710, thereby make two sets of electromagnetic heating heat supply baking systems independent operation only for the heat transfer apparatus heat supply in the regional baking house of this bulk drying room separately, and then toast the tobacco leaf in the baking house through the heat exchange of heat transfer apparatus, guaranteed the required heat of the high load operation simultaneously of heat transfer apparatus in two bulk drying room areas.

When the heat exchange equipment of each drying room or most drying rooms in one intensive drying room area in two intensive drying room areas needs to supply heat, and the heat exchange equipment of most drying rooms or all drying rooms in the other intensive drying room area does not need to supply heat, namely, the high-load operation of one intensive drying room area and the low-load operation of the other intensive drying room area, the first connecting pipe control valve 610 and the second connecting pipe control valve 710 can be opened, so that the low-load electromagnetic heating and heat supplying baking system can be matched with the high-load electromagnetic heating and heat supplying baking system to simultaneously supply heat to the heat exchange equipment in the high-load intensive drying room area, the heat waste of the low-load intensive drying room area can be avoided, the energy-saving purpose is achieved, the heat requirement of the high-load intensive drying room area can be well met, and the heat supplying effect is ensured.

When the heat exchange devices of a small part of drying rooms in two dense drying room areas need to supply heat, namely, the two dense drying room areas need low-load operation, the first connecting pipe control valve 610 and the second connecting pipe control valve 710 can be opened, and one group of electromagnetic heating and heat supplying baking systems stops running, so that the heat supply to the heat exchange devices in the two dense drying room areas by the other group of electromagnetic heating and heat supplying baking systems can meet the requirement of tobacco leaf baking, and the purpose of saving energy can be better achieved.

Therefore, compared with the existing electromagnetic boiler heat supply baking system, the combined electromagnetic heating heat supply baking system disclosed by the embodiment of the invention can flexibly adjust the operation state according to the heat condition required by the load operation of each intensive baking room area, not only can well meet the requirement of the tobacco leaf baking temperature in each intensive baking room area and ensure the baking quality and quality of tobacco leaves, but also can avoid the energy waste caused by the fact that the electromagnetic heating heat supply baking system in the low-load intensive baking room area keeps the high-load operation state and achieve the good energy-saving purpose.

Of course, according to the actual building usage, the heat supply water outlet pipes 230 of the electromagnetic heating and heat supply baking systems in the three intensive baking room areas may be connected through the first connecting pipes 600, the heat supply water return pipes 240 may be connected through the second connecting pipes 700, and the first connecting pipes 600 are respectively provided with the corresponding first connecting pipe control valves 610, and the second connecting pipes 700 are respectively provided with the corresponding second connecting pipe control valves 710, so as to form a combined electromagnetic heating and heat supply baking system for the three intensive baking room areas.

As a structure of the electromagnetic heating heat supply baking system, it may include an electric heating water supply device, a heat supply water outlet pipe 230, a heat supply water return pipe 240, and a heat exchange device disposed in the baking room; the heat supply water outlet 203 of the electromagnetic heating water supply equipment is connected with the water inlet end of the heat exchange equipment through a heat supply water outlet pipe 230, and the heat supply water return port 204 of the electromagnetic heating water supply equipment is connected with the water outlet end of the heat exchange equipment through a heat supply water return pipe 240.

When the electromagnetic heating heat supply baking system operates, media such as hot water heated by the electromagnetic heating water supply equipment can be conveyed to heat exchange equipment in the baking room through the heat supply water outlet 203 and the heat supply water outlet pipe 230, heat exchange is carried out between the heat exchange equipment and circulating air in the baking room to provide the temperature required by baking tobacco leaves, and cold water cooled after heat exchange returns to the electromagnetic heating water supply equipment through the heat supply water return pipe 240 and the heat supply water return port 204 to be heated again for subsequent circulating heat supply, so that the baking operation of the tobacco leaves in the baking room is realized through the electromagnetic heating heat supply baking system.

Example 2

The embodiment of the invention further improves the combined electromagnetic heating and heat supplying baking system for multiple zones disclosed in embodiment 1, and please refer to fig. 2 and 3; the electromagnetic heating water supply equipment in the electromagnetic heating heat supply baking system of the sealed drying room area can be arranged into two groups; the heat supply water outlets 203 of the two sets of electromagnetic heating water supply equipment are connected to the same heat supply water outlet pipe 230, the heat supply water return ports 204 of the two sets of electromagnetic heating water supply equipment are connected to the same heat supply water return pipe 240, and the heat supply water outlets 203 and the heat supply water return ports 204 of at least one set of electromagnetic heating water supply equipment are provided with control valves 2005.

According to the technical scheme of the embodiment, the two groups of electromagnetic heating water supply equipment can flexibly regulate and control heat supply adaptively according to the working condition of the drying room in the bulk drying room area, so that the requirements of the tobacco leaf baking temperature in the bulk drying room area are well met, the baking quality and quality of tobacco leaves are ensured, and the problem of energy waste in the bulk drying room area when the low-load heat supply is required can be solved.

For example, when the bulk drying room is used for tobacco leaf baking, if the heat exchange equipment of each drying room or most drying rooms needs to supply heat, the control valve 2005 can be opened, so that the two electromagnetic heating water supply equipment of the bulk drying room can simultaneously supply heat to the heat exchange equipment needing to supply heat in the bulk drying room through the heat supply water outlet pipe 230, and the high-load heat supply requirement of the bulk drying room area is met; if only a small part of heat exchange equipment of the drying room needs to supply heat, one group of electromagnetic heating water supply equipment can be closed, the normal work of the other group of electromagnetic heating water supply equipment is only reserved, heat is supplied to the heat exchange equipment needing to supply heat in the bulk drying room area through the heat supply water outlet pipe 230, and the heat supply requirement of the low load of the bulk drying room area is met, so that the heat supply regulation of the bulk drying room area is more flexible, the aim of better energy saving is achieved, the requirement of the tobacco leaf baking temperature is well met, and the baking quality and quality of the tobacco leaves are ensured.

Specifically, as shown in fig. 2 and 3, a control valve 2005 is provided only in the heating water outlet 203 and the heating water return 204 in one of the groups of electromagnetic heating water supply apparatuses; when two groups of electromagnetic heating water supply equipment are required to be used as heat sources to operate for heat supply, the group of electromagnetic heating water supply equipment provided with the control valve 2005 is started, and the control valve 2005 is in an open state, so that the two groups of electromagnetic heating water supply equipment can operate cooperatively; when a set of electromagnetic heating water supply equipment is required to be used as a heat source to operate and supply heat, the set of electromagnetic heating water supply equipment provided with the control valve 2005 is closed, and the control valve 2005 is in a closed state, so that the set of electromagnetic heating water supply equipment without the control valve 2005 is in an operating state to supply heat as the heat source.

Of course, the control valves 2005 may be provided at both the heat supply water outlet 203 and the heat supply water return port 204 of the two sets of electromagnetic heating water supply equipment, so that the two sets of electromagnetic heating water supply equipment can simultaneously operate as heat sources to supply heat, and any one of the two sets of electromagnetic heating water supply equipment can operate as a heat source to supply heat, so as to facilitate the alternate or maintenance operation of the other set of electromagnetic heating water supply equipment; however, an increase in construction cost may be caused due to an increase in the number of control valves 2005 provided.

As one structure of the electromagnetic heating water supply apparatus, it may include an electromagnetic hot water device and a warm water tank 200; the heat preservation water tank 200 is provided with a circulation outlet pipe 201, a circulation inlet pipe 202, a heat supply outlet 203 and a heat supply return port 204, the circulation outlet pipe 201 is connected with a heating inlet pipe 210 of the electromagnetic hot water device, the circulation inlet pipe 202 is connected with a heating outlet pipe 220 of the electromagnetic hot water device, the heat supply outlet 203 is connected with a heat supply outlet pipe 230, and the heat supply return port 204 is connected with a heat supply return pipe 240.

The cold water in the heat preservation water tank 200 can be conveyed to an external electromagnetic hot water device for heating through the circulation water outlet pipe 201, the heated hot water can be returned to the heat preservation water tank 200 through the circulation water inlet pipe 202 for storage, and the heated hot water in the heat preservation water tank 200 can form external circulation with heat exchange equipment in each drying room through the heat supply water outlet 203, the heat supply water outlet pipe 230, the heat supply water return port 204 and the heat supply water return pipe 240, so as to provide a heat source for the heat exchange equipment in the drying room; moreover, when the electromagnetic water heating device cannot normally operate due to failure or power failure, the hot water stored in the heat-preservation water tank 200 can still supply heat to the heat exchange equipment for a period of time to maintain the baking temperature of the tobacco leaves, so that the baking quality of the tobacco leaves is prevented from being influenced due to the fact that the electromagnetic water heating device cannot normally operate suddenly.

Meanwhile, a third connection pipe 2003 is further provided between the hot water tanks 200 of the two sets of electromagnetic heating water supply apparatuses in the same electromagnetic heating heat-supplying baking system, and the third connection pipe 2003 is provided with a third connection pipe control valve 2004 for controlling the opening and closing of the third connection pipe 2003, so that the internal chambers of the two hot water tanks 200 can be connected or disconnected through the third connection pipe 2003.

The liquid levels in the two heat-preservation water tanks 200 can be balanced based on the arrangement structure of the third connecting pipe 2003 and the third connecting pipe control valve 2004, the phenomenon that the liquid level of the heat-preservation water tank 200 in one of the two groups of electromagnetic heating water supply equipment is excessively increased and exceeds the limited liquid level due to the fact that the two groups of electromagnetic heating water supply equipment are operated in a cooperative mode and independently is avoided, the normal working liquid level of the heat-preservation water tank 200 is guaranteed, water resource waste caused by the fact that water is circularly collected in one of the heat-preservation water tanks 200 and is discharged from the overflow port 209 is avoided, the problem that frequent water supplement is needed due to the fact that the liquid level of the other heat-preservation water tank 200 is too low is avoided, and stable operation.

In the embodiment of the present invention, the heat supply outlet pipe 230 of the electromagnetic heating heat supply baking system in each sealed baking room area may be provided with a heat supply delivery pump 260, so that media such as hot water in the heat preservation water tank 200 can be delivered to the heat exchange equipment in each baking room in the intensive baking room area along the heat supply outlet pipe 230 by the delivery power provided by the heat supply delivery pump 260; meanwhile, the upstream and the downstream of the heat supply delivery pump 260 are respectively provided with a service valve, so that the service and maintenance of the heat supply delivery pump 260 are facilitated through the service valves.

Preferably, the heat supply delivery pump 260 is further connected in parallel with a bypass heat supply delivery pump 270, so that when the heat supply delivery pump 260 performs maintenance operation, the bypass heat supply delivery pump 270 can ensure that the heat supply outlet pipe 230 can normally deliver media such as hot water to the heat exchange device; meanwhile, service valves may be provided upstream and downstream of the bypass heating feed pump 270.

Meanwhile, as shown in fig. 1, the water inlet ends of the heat exchange devices disposed in the drying rooms may be respectively connected to the heat supply water outlet pipe 230 through a water inlet pipe 400, and the water return ends may be respectively connected to the heat supply water return pipe 240 through a water return pipe 500; wherein, the water inlet pipe 400 is provided with a flow regulator 401, so that the flow of media such as hot water flowing into the heat exchange device through the water inlet pipe 400 can be effectively controlled by the flow regulator 401.

For example, when the temperature in the drying room is higher than the temperature required for baking the tobacco leaves, or the temperature of the medium such as hot water in the water inlet pipe 400 is higher, the flow regulator 401 can control the flow of the medium such as hot water in the water inlet pipe 400 to decrease, so as to decrease the heat exchange amount of the heat exchange equipment and decrease the temperature for baking the tobacco leaves; when the temperature in the drying room is lower than the temperature required by tobacco leaf baking or the stability of media such as hot water in the water inlet pipe 400 is relatively low, the flow regulator 401 can control the flow of the media such as hot water in the water inlet pipe 400 to increase, and further the heat exchange heat of the heat exchanger 300 is increased to increase the temperature of tobacco leaf baking.

Therefore, the aim of controlling the tobacco leaf baking temperature in the drying room in real time can be achieved according to the scheme, the heat exchange equipment is prevented from being maintained in a working state with higher heat for a long time, the baking effect of the tobacco leaves is guaranteed, and the energy conservation of the heat exchange equipment and the stability of the tobacco leaf baking temperature are facilitated.

The flow regulator 401 may be an electric flow regulator, and may be connected to a corresponding control system to perform automatic regulation and control according to the monitored temperature of the temperature sensor in the drying room; specifically, the flow controller 201 is connected with the control output end of the control system, and the temperature sensor is arranged in the drying room and connected with the control input end of the control system; the temperature sensor is used for monitoring the tobacco leaf baking temperature in the drying room, and transmitting the generated temperature signal to the control system, and the control system controls the opening degree of the flow regulator 401 according to the received temperature signal, so that the automatic regulation and control of the flow of the water inlet pipe 400 are realized; the control system may be a PLC control system.

In order to facilitate the maintenance of the flow regulator 401, as shown in fig. 1, the water inlet pipe 400 may further be provided with a first maintenance valve 402 and a second maintenance valve 403, and the first maintenance valve 402 and the second maintenance valve 403 are respectively located upstream and downstream of the flow regulator 401 (upstream and downstream refer to front and rear positions located in the direction of flow, upstream refers to a position passing first in the direction of flow, and downstream refers to a position passing later in the direction of flow).

When the flow regulator 401 fails or needs to be repaired and maintained, the first repair valve 402 and the second repair valve 403 can be closed, so that the flow regulator 401 is isolated and is convenient for replacement, repair and maintenance and other operations; and after the flow regulator 401 is repaired and maintained, the first and

second repair valves

402 and 403 may be opened to ensure the normal operation of the flow regulator 401.

In addition, when the flow regulator 401 is maintained, the water inlet pipe 400 may further be provided with a bypass pipe 410 in order to ensure that the heat exchange equipment can continue to keep the tobacco leaf baking operation; the water inlet end and the water outlet end of the bypass pipe 410 are respectively connected with the water inlet pipe 400, the water inlet end is positioned at the upstream of the first maintenance valve 402, the water outlet end is positioned at the downstream of the second maintenance valve 403, and the bypass pipe 410 is provided with a bypass valve 411.

Therefore, after the first maintenance valve 402 and the second maintenance valve 403 are closed, the bypass valve 411 can be opened, so that the hot water and other media in the water inlet pipe 400 can continuously flow into the heat exchange equipment through the bypass pipe 410, thereby ensuring the normal operation of the heat exchange equipment and avoiding the interruption of the tobacco leaf baking operation caused by the maintenance of the flow regulator 401; when the flow regulator 401 works normally, the bypass valve 411 can be closed to ensure that media such as hot water in the water inlet pipe 400 can smoothly flow into the heat exchanger 300 through the flow regulator 401, which is beneficial to ensuring the normal work of the flow regulator 401.

It is easy to understand that the return pipe 500 may be provided with a return water delivery pump 510, so that media such as hot water after heat exchange in the heat exchange device can smoothly return to the thermal insulation water tank 200 through the return pipe 500 and the heat supply return pipe 204 by the delivery power provided by the return water delivery pump 510 to supply the thermal insulation water device with recycling heating.

And, in order to control whether the heat exchange equipment in the drying room participates in the operation according to the tobacco leaf curing condition, a water inlet pipe control valve 430 may be provided at the water inlet pipe 400, and a water return pipe control valve 530 may be provided at the water return pipe 500, so that the communication/blocking of the corresponding heat exchange equipment with the heat supply water outlet pipe 230 and the heat supply water return pipe 240 may be controlled through the water inlet pipe control valve 430 and the water return pipe control valve 530 to determine whether the heat exchange equipment participates in the heat supply operation.

If the heat exchange equipment in the drying room is required to perform tobacco leaf baking, the water inlet pipe control valve 430 and the water return pipe control valve 530 can be opened, so that media such as hot water in the heat supply water outlet pipe 230 can be conveyed to the heat exchange equipment in the drying room to provide the temperature required by tobacco leaf baking, and the media are returned to the heat supply water return pipe 240 after heat exchange to realize circulation; if the heat exchange equipment in the drying room is not needed to perform the tobacco leaf baking work, the water inlet pipe control valve 430 and the water return pipe control valve 530 can be closed, so that the heat exchange equipment in the drying room is blocked from the heat supply water outlet pipe 230 and the heat supply water return pipe 240, and the normal tobacco leaf baking work of the heat exchange equipment in other drying rooms is ensured.

Meanwhile, the circulation water outlet pipe 201 or the heating water inlet pipe 210 is provided with the heating delivery pump 250, so that the medium such as water in the hot water tank 200 can be smoothly delivered to the electromagnetic hot water apparatus for heating under the delivery power of the heating delivery pump 250 by the delivery power provided by the heating delivery pump 250.

In order to ensure that the hot water stored in the heat-preservation water tank 200 can be continuously conveyed to each heat exchange device within a period of time when the baking system stops running due to a fault of a power supply line or a power failure of a mains supply, the combined electromagnetic heating baking system disclosed in the embodiment of the invention may further comprise a standby power generation device, and the standby power generation device is connected with the heating delivery pump 250, the heating delivery pump 260 and the return water delivery pump 510 to provide electric energy.

Therefore, when the baking system stops running due to the failure of a power supply line or the power failure of the commercial power supply, the standby power generation equipment can be started to provide required electric energy for the normal work of the heating delivery pump 250, the heat supply delivery pump 260 and the return water delivery pump 510, so that the heat supply circulation can be continuously kept between the heat preservation water tank 200 and the heat exchange equipment, the tobacco baking temperature in the baking room can be favorably maintained, and the tobacco baking quality is ensured.

In addition, compared with a structure that the standby power generation equipment is also connected with the electromagnetic water heating device, the problems that the normal operation of the standby power generation equipment is influenced and the energy consumption of the standby power generation equipment is increased due to overhigh load power of the standby power generation equipment caused by high power consumption of the electromagnetic water heating device are solved; generally, the standby power generation equipment can be small power generation equipment such as a diesel generating set; the volume of the holding water tank 200 may be 15 tons, and the volume of the holding water tank 200 may be adaptively adjusted according to the number of heat exchange devices of the load.

In the embodiment of the present invention, as shown in fig. 1, the heat supply water outlet pipe 230 and the heat supply water return pipe 240 may be a communicated pipe; and, the heat supply outlet pipe 230 is provided with a valve 540 at the downstream of the heat exchange device located at the rearmost end of the drying room, so that the pressure in the pipeline can be adjusted and relieved through the valve 540, thereby effectively reducing the conveying vibration of the heat supply outlet pipe 230 and the heat supply return pipe 240, and improving the stability and the safety of pipeline conveying.

Meanwhile, the water inlet pipe 400 may be provided with a water inlet pipe blowdown valve 420, and the water return pipe 500 may be provided with a water return pipe blowdown valve 520; wherein, the blowoff valve 420 through the inlet pipe can be used for the cleaning and the blowdown of the inlet pipe 400, and the blowoff valve 520 through the return pipe can be used for the cleaning and the blowdown of the return pipe 500.

Preferably, the connection end of the inlet leg blowdown valve 420 and the inlet leg 400 is located downstream of the connection end of the bypass duct 410, such that the inlet leg blowdown valve 420 in conjunction with the first service valve 402 may be used for the wash blowdown of the bypass duct 410.

And, through the cooperation of inlet tube blowoff valve 420 and wet return blowoff valve 520, can regard as the washing end of intaking in inlet tube blowoff valve 420 and wet return blowoff valve 520, the other is as wasing the drainage end to can heat exchange equipment wash alone, and reduce the length of wasing the pipeline effectively, both can guarantee heat exchange equipment's cleaning performance, can reach the purpose of practicing thrift the washing water again.

It should be noted that, in order to avoid the backflow of the circulation water inlet pipe 202, a one-way valve (i.e., a check valve) may be disposed on the circulation water inlet pipe 202 to ensure that the cold water to be heated in the thermal insulation water tank 200 can smoothly flow into the electromagnetic hot water device for heating; the circulation water inlet pipe 202 may be provided with a pressure gauge so as to detect the pressure in the pipeline.

Meanwhile, the circulating water inlet pipe 202 and the circulating water outlet pipe 201 can also be provided with control valves, so that the opening and closing of the circulating water inlet pipe 202 and the circulating water outlet pipe 201 can be controlled through the control valves, and the operations such as the overhaul, the maintenance and the like of the electromagnetic hot water device and the heat preservation water tank 200 are facilitated; the hot water tank 200 may be connected to a water source through a water injection pipe for water injection operation of the hot water tank 200.

Preferably, the connecting ends of the circulating water outlet pipe 201 and the heating water inlet pipe 210 and the connecting ends of the circulating water inlet pipe 202 and the heating water outlet pipe 220 can be provided with flange parts which are mutually attached, so that the connecting ends of the circulating water outlet pipe 201 and the heating water inlet pipe 210 and the connecting ends of the circulating water inlet pipe 202 and the heating water outlet pipe 220 have larger attaching contact areas through the corresponding flange parts, thereby not only facilitating the stable attaching fixation of the connecting ends, but also ensuring the sealing property of the connecting ends; usually, a sealing element such as a sealing gasket may be disposed between two flange portions attached to each other to ensure the sealing performance of the connection.

Example 3

The embodiment of the invention discloses an electromagnetic water heating device which is suitable for a combined electromagnetic heating heat supply baking system in the embodiment 1; referring to fig. 4 to 6, the disclosed electromagnetic water heating apparatus may include a heating water inlet pipe 210, a heating water outlet pipe 220, and a plurality of electromagnetic heaters 100 connected in parallel between the heating water inlet pipe 210 and the heating water outlet pipe 220; therefore, the water in the thermal insulation water tank 200 can be simultaneously conveyed to each electromagnetic heater 100 of the external electromagnetic water heating device for heating through the circulating water outlet pipe 201 and the heating water inlet pipe 210, and the heated water can be returned to the thermal insulation water tank 200 for storage through the heating water outlet pipe 220 and the circulating water inlet pipe 202.

Therefore, compared with the arrangement mode that the electromagnetic coil is directly wound on the furnace body or the heat preservation water tank 200, the water in the heat preservation water tank 200 can be dispersedly heated in the externally arranged electromagnetic hot water device, the arrangement area of the electromagnetic coil can be reduced, the construction cost of the tobacco leaf baking system can be reduced, the limitation of the heating area of the furnace body can be broken through, the heating time can be further shortened, the heating efficiency of the heat preservation water tank 200 can be improved, and the heat preservation water tank 200 and the electromagnetic hot water device can be conveniently overhauled and maintained; the heated water in the heat preservation water tank 200 can form an external circulation with the heat exchange equipment in each drying room through the heat supply water outlet pipe 203 and the heat supply water return pipe 204, so as to provide a heat source required for baking tobacco leaves for the heat exchange equipment in the drying room.

Specifically, the electromagnetic heater 100 may include a cylinder 110 having a cavity therein and an electromagnetic coil 120, the electromagnetic coil 120 is wound around an outer side wall of the cylinder 110, and the cylinder 110 is provided with a water inlet 111 and a water outlet 112 respectively communicating with the cavity.

The water inlet 111 of each electromagnetic heater 100 is respectively connected with a heating water inlet pipe 210, and the water outlet 112 of each electromagnetic heater 100 is respectively connected with a heating water outlet pipe 220; therefore, water in the heat-preservation water tank 200 can be respectively and circularly distributed into the cylinders 110 of the electromagnetic heaters 100 by heating the water inlet pipe 210 and the cylinders 110 arranged in parallel, the water is heated by the magnetic field generated by the electromagnetic coil 120 wound on the outer side wall of the cylinder 110, the water in each cylinder 110 is heated and then converged into the heat-preservation water tank 200 by the heating water outlet pipe 220, and the water temperature in the heat-preservation water tank 200 is increased to supply heat to the heat exchangers in the drying rooms; the number of electromagnetic heaters 100 is adjusted in accordance with the volume of the hot water tank 200.

In order to facilitate the assembly and connection of each electromagnetic heater 100 with the heating water inlet pipe 210 and the heating water outlet pipe 220, as shown in fig. 2, the connection end of the water inlet 111 and the heating water inlet pipe 210, and the connection end of the water outlet 112 and the heating water outlet pipe 220 are detachably connected through two first flange parts 113 which are hermetically attached, so that the end surfaces of the water inlet 111 and the water outlet 112 of the cylinder 110 and the corresponding connection port end surfaces of the heating water inlet pipe 210 and the heating water outlet pipe 220 have larger attachment contact areas through the first flange parts 113, thereby not only facilitating the stable attachment and fixation of the connection ends, but also ensuring the sealing performance of the connection ends; wherein, a sealing gasket can be arranged between the two first flange parts 113 attached to each other.

Meanwhile, the outer side wall of the cylinder 110 may be provided with a demagnetizing part, and the demagnetizing part is located on the side of the electromagnetic coil 120 away from the cylinder 110, so that the demagnetizing part may shield the outer magnetic field of the electromagnetic coil 120, thereby reducing or eliminating the magnetic radiation caused by the outer electromagnetism of the electromagnetic coil 120, and the magnetic field generated by the electromagnetic coil 120 is located on the side of the cylinder 110 to ensure that the cylinder 110 generates heat for heating the medium such as water therein.

Specifically, the degaussing member may include a plurality of degaussing strips 130, and the plurality of degaussing strips 130 are uniformly distributed along the circumferential direction of the cylinder 110, so as to achieve the purpose of shielding the magnetic field outside the electromagnetic coil 120, and facilitate the wiring connection between the electromagnetic coil 120 and components such as the controller 150 through the gap between the degaussing strips 130; the degaussing strip 130 extends along the axial direction of the cylinder body 110 and is detachably connected with the cylinder body 110, so that the degaussing strip 130 can be conveniently installed and detached, and the electromagnetic coil 120 and the degaussing strip 130 can be replaced, cleaned, maintained and the like.

Generally, as a detachable connection manner of the degaussing strip 130 and the cylinder 110, the degaussing strip 130 can be screwed and fixed on the cylinder 110 by fasteners such as screws; certainly, the degaussing strip 130 can also be directly adhered and fixed to the length of the cylinder 110 in an adhering manner, the fixing manner is simple and fast, and the arrangement of fasteners such as screws and the like and the arrangement of mounting holes can be avoided, so that the manufacturing cost of the electromagnetic heater 100 can be reduced, the structural strength of the cylinder 110 can be better ensured, or the degaussing strip 130 can be adhered to the outer surface of the electromagnetic coil 120.

In the electromagnetic water heating apparatus disclosed in the embodiment of the present invention, the electromagnetic heater 100 may further include a controller 150, and the controller 150 is connected to the electromagnetic coil 120, so that the controller 150 may control the current magnitude and the on/off of the electromagnetic coil 120 in the corresponding electromagnetic heater 100.

The controller 150 controls the on/off of the electromagnetic coil 120, so that the corresponding electromagnetic heater 100 can be started or stopped; the current of the electromagnetic coil 120 is controlled by the controller 150, so that the magnetic field intensity of the electromagnetic coil 120 can be adjusted, and the corresponding control and adjustment of the heating effect of the electromagnetic heater 100 can be realized.

Meanwhile, in order to realize the automatic control of the controller 150 on the electromagnetic heater 100, a temperature sensor and a flow sensor may be disposed on the heating water inlet pipe 210, and the temperature sensor and the flow sensor are respectively connected with the controller 150; the temperature sensor and the flow sensor are used to monitor the water temperature and the flow rate in the heating water inlet pipe 210, respectively, and the controller 150 controls the operation of the electromagnetic heater 100, that is, the operation state of the electromagnetic coil 120, according to the water temperature and the flow rate monitored by the temperature sensor and the flow sensor.

Such as: when the flow sensor does not detect water flow in the heating water inlet pipe 210, the controller 150 controls the electromagnetic heater 100 to stop working; when the flow sensor monitors that water flows in the heating water inlet pipe 210 and the temperature of the water flow monitored by the temperature sensor is lower than a preset temperature, the controller 150 controls the electromagnetic heater 100 to start working or increases the current of the electromagnetic coil 120 to increase the magnetic field intensity; when the flow sensor detects that there is water flow in the heating water inlet pipe 210 and the temperature of the water flow detected by the temperature sensor is higher than the preset temperature, the controller 150 controls the electromagnetic heater 100 to stop working or reduces the current of the electromagnetic coil 120 to reduce the magnetic field intensity.

It is easy to understand that the water flow switch 221 may be disposed on the heating water outlet pipe 220, so that the opening and closing of the heating water outlet pipe 220 may be controlled by the water flow switch 221; meanwhile, the heating water inlet pipe 210 is provided with a drain pipe, the drain pipe is located at a downstream position of one end of the electromagnetic heater 100 connected with the heating water inlet pipe 210, and the drain pipe is provided with a drain valve and can be opened and closed by the drain valve.

When the electromagnetic hot water device needs to be cleaned and maintained, the blow-off pipe can be opened through the blow-off valve, so that cleaning sewage is discharged out of the electromagnetic hot water device from the blow-off pipe, the electromagnetic hot water device is kept clean, and normal heating work of the electromagnetic hot water device is facilitated; and when the electromagnetic water heating device works normally, the blow-off pipe can be closed through the blow-off valve, so that the normal flow of water flow circulation heating in the electromagnetic water heating device is ensured.

For safe use of the electromagnetic water heating apparatus, each electromagnetic heater 100 and corresponding electrical components may be disposed in the cabinet 160, so that the electromagnetic water heating apparatus is isolated from the external environment by the cabinet 160, and each electromagnetic heater 100 and corresponding electrical components in the cabinet 160 are protected.

Meanwhile, the water inlet 111 is arranged on the end surface of the top end of the cylinder 110, and the water outlet 112 is arranged on the side wall of the cylinder 110 and is positioned at a position close to the bottom of the cylinder 110; compared with the structure that the water outlet 112 is arranged on the bottom end face of the cylinder body 110, the water outlet 112 is arranged on the position, close to the bottom, of the side wall of the cylinder body 110, so that water in the cylinder body 110 is enabled to have a long heating stroke and is heated more easily, the bottom end face of the cylinder body 110 is enabled to be flat and can be better attached to and fixed on the mounting seat on the bottom face of the cabinet body 160, stable fixation of the cylinder body 110 is facilitated, the arrangement height of the cylinder body 110 is reduced, occupied space is saved, and miniaturization of the cabinet body 160 is facilitated.

Preferably, the edge of the bottom end face of the cylinder 110 is provided with an outer brim 140 extending outwards, so that the fitting area between the bottom end face and the mounting seat can be increased through the outer brim 140, the mounting and fixing stability of the cylinder 110 can be better improved, the mounting hole can be provided with the outer brim 140, and the arrangement of fasteners such as screws and the like is convenient for mounting and fixing the cylinder 110 and the mounting seat; the number of the fasteners is at least three, and the fasteners are uniformly distributed along the circumferential direction of the cylinder body 110, so that the balance stress of the cylinder body 110 is facilitated, and the installation and fixation stability of the cylinder body 110 is ensured.

The outer eaves 140 can be annular plate-shaped structural members arranged along the circumferential direction of the cylinder 110, so that the processing and manufacturing of the cylinder 110 are facilitated, the outer eaves 140 is of an integral structure, and the structural strength of the whole outer eaves 140 is improved; of course, the outer brim 140 may also be a plurality of lugs distributed at intervals along the circumference of the cylinder 110; the shape structure of the outer eaves 140 is not limited by the present embodiment.

Example 4

The embodiment of the invention discloses a heat preservation water tank 200 which is suitable for a combined electromagnetic heating heat supply baking system in the embodiment 1; referring to fig. 7 to 8, the inner chamber of the disclosed insulated water tank 200 may be provided with a partition 205 extending in a transverse direction, and the inner chamber is partitioned by the partition 205 to form an upper chamber and a lower chamber; the interlayer 205 is provided with an opening, and the upper chamber and the lower chamber are communicated through the opening; the side wall of the lower chamber is provided with a circulating water outlet pipe 201 and a heat supply water return port 204, and the side wall of the upper chamber is provided with a circulating water inlet pipe 202 and a heat supply water outlet 203.

The water in the heat preservation water tank 200 can be conveyed to an external electromagnetic water heating device for heating through the circulating water outlet pipe 201, and the heated water can be returned to the heat preservation water tank 200 for storage through the circulating water inlet pipe 202, so that the arrangement mode that the electromagnetic coil is directly wound on the heat preservation water tank 200 is avoided, the water in the heat preservation water tank 200 can be dispersedly heated in the external electromagnetic water heating device, the arrangement area of the electromagnetic coil can be reduced, the construction cost of the tobacco leaf baking system can be reduced, the limitation of the heating area of the furnace body can be broken through, the heating time can be shortened, the heating efficiency of the heat preservation water tank 200 can be improved, and the maintenance of the heat preservation water tank 200 is facilitated; the heated water in the heat preservation water tank 200 can form an external circulation with the heat exchange equipment in each drying room through the heat supply water outlet 203, the heat supply water outlet pipe 230, the heat supply water return port 204 and the heat supply water return pipe 240, so as to provide a heat source for the heat exchange equipment in the drying room.

Meanwhile, the area of the communication between the upper cavity and the lower cavity can be effectively reduced through the isolation effect of the interlayer 205, so that the heat exchange between the hot water layer of the upper cavity and the cold water layer of the lower cavity can be reduced, the hot water conveyed to the heat exchange equipment from the heat supply water outlet pipe 230 is ensured to meet the temperature required by tobacco leaf baking, a certain blocking effect on the water flow direction between the heat supply water return port 204 and the heat supply water outlet 203 and between the circulation water outlet pipe 201 and the circulation water inlet pipe 202 can be achieved through the interlayer 205, the cold water which flows back to the heat preservation water tank 200 through the heat supply water return port 204 is prevented from directly flowing to the heat exchange equipment through the heat supply water outlet 203, the hot water which flows back to the heat preservation water tank 200 through the circulation water inlet pipe 202 directly flows to the electromagnetic hot water device through the circulation water outlet.

Moreover, the communication between the upper chamber and the lower chamber can be maintained through the opening formed in the interlayer 205; compared with a structure that the upper chamber and the lower chamber are completely separated by the interlayer 205, the original water storage volume of the heat preservation water tank 200 is kept, the water injection operation of the heat preservation water tank 200 is facilitated, the heat supply water outlet 203 and the heat supply water return port 204 can be closed to carry out internal circulation heating on water in the heat preservation water tank 200, and heat is supplied by heat exchange equipment for external circulation after water in the heat preservation water tank 200 is heated, so that the energy consumption can be effectively reduced, the instant temperature of the heat exchange equipment can reach the temperature required by tobacco leaf baking, and the tobacco leaf baking efficiency is improved; when the external electromagnetic water heating device stops working due to power failure or other reasons, the hot water in the heat-preservation water tank 200 can still meet the heat supply requirement of the heat exchange equipment in the drying room for a period of time.

Specifically, as shown in fig. 7, the circulation water inlet pipe 202 and the heat supply water outlet 203 may be respectively disposed at two opposite sides of the upper chamber, the circulation water outlet pipe 201 and the heat supply water return port 204 may be respectively disposed at two opposite sides of the lower chamber, and the circulation water outlet pipe 201 and the circulation water inlet pipe 202 are located at the same side of the thermal insulation water tank 200, and the heat supply water outlet 203 and the heat supply water return port 204 are located at the same side of the thermal insulation water tank 200, so that the circulation water outlet pipe 201 and the circulation water inlet pipe 202 are located at the back side of the thermal insulation water tank 200, which facilitates connection and pipeline routing with electromagnetic hot water devices at the back side, and the heat supply water outlet 203 and the heat supply water return port 204 are located at the front side of the thermal insulation water tank 200, which facilitates connection.

Meanwhile, as the hot water layer is arranged below the upper and lower cold water layers, the connecting end of the heat supply water outlet 203 and the upper cavity can be arranged above the connecting end of the circulating water inlet pipe 202 and the upper cavity, thereby being beneficial to effectively conveying the upper layer hot water in the upper cavity to the heat exchange equipment from the heat supply water outlet 203 and better keeping the water conveying temperature of the heat preservation water tank 200 through the heat supply water outlet 203.

In order to improve the structural strength of the interlayer 205, the inner chamber is also provided with an interlayer support 2051, one end of the interlayer support 2051 is connected with the inner wall of the heat-preservation water tank 200, and the other end of the interlayer support 2051 is connected with the interlayer 205, so that the interlayer support 2051 can provide a supporting effect for the interlayer 205, the interlayer 205 is conveniently fixed, and the structural strength of the interlayer 205 can be improved; the barrier 205 may be a plate-like structure.

As an arrangement structure of the interlayer support 2051, the interlayer support 2051 may be a vertically arranged cylindrical structural member, the bottom end of the interlayer support 2051 is fixedly arranged on the bottom surface of the lower chamber, and the top end of the interlayer support 2051 abuts against the interlayer 205, so as to provide a vertically downward supporting force for the interlayer 205, which not only enables the supporting force of the interlayer support 2051 to more effectively act on the interlayer 205, but also enables the interlayer support 2051 to have the advantages of simple structure and convenience in arrangement and fixation; of course, the partition support 2051 may also be a diagonal draw plate or a diagonal support structure connected to the partition 205, and the arrangement of the partition support 2051 is not limited in the embodiment of the present invention.

As shown in fig. 7, the opening may be located at an edge of the partition 205, that is, one end of the partition 205 is fixedly connected to an inner wall of one side of the insulated water tank 200, the other end of the partition 205 extends to form a free end, and an opening is formed between the free end and the inner wall of the other side of the insulated water tank 200; therefore, compared with the arrangement mode that the inner walls of two opposite sides of the heat preservation water tank 200 are respectively provided with the interlayer 205 and the opening is reserved between the two interlayers 205, the heat preservation water tank has the advantages of simple structure and convenience in arrangement and fixation.

Of course, the opening may also be disposed at the middle position of the partition 205, for example, the peripheral edge of one partition 205 is fixedly connected to the inner side wall of the thermal insulation water tank, and the opening is disposed at the middle position, or the position adjacent to the middle, or the position adjacent to the edge of the partition 205; the embodiment of the invention does not limit the arrangement mode and structure of the interlayer 205 and the opening position of the opening.

In the heat-preservation water tank 200 disclosed in the embodiment of the present invention, as shown in fig. 8, the heat-preservation water tank 200 may further be provided with an overflow port 209; the overflow port 209 is provided with an anti-convection mechanism having a first state in which the overflow port 209 is closed and a second state in which the overflow port 209 is opened.

When the liquid level in the heat-preservation water tank 200 is lower than the limited liquid level, the overflow port 209 can be closed through the convection prevention mechanism, so that the interior of the heat-preservation water tank 200 is isolated from the outside, the heat loss caused by convection heat exchange between hot water in the heat-preservation water tank 200 and outside air is avoided, and the heat supply effect of the heat-preservation water tank 200 is further improved; when the liquid level in holding water tank 200 reaches the limited liquid level, prevent that the convection current mechanism can open overflow mouth 209 for unnecessary water flows out through overflow mouth 209, and then can avoid the liquid level in holding water tank 200 to surpass the limited liquid level effectively.

As an arrangement structure of the convection prevention mechanism, the convection prevention mechanism may include a liquid level sensor and a control valve disposed at the overflow port 209; the liquid level sensor is used for monitoring the liquid level height in the heat preservation water tank 200 and generating a generated liquid level signal to the control valve; the control valve is used for receiving the liquid level signal and controlling the opening and closing of the overflow port 209 according to the liquid level signal, thereby realizing the automatic electric control of the opening and closing of the overflow port 209; compared with a mechanical control mode structure, the method has the advantages of rapid response and high control precision.

In order to facilitate the arrangement of the liquid level sensor, as shown in fig. 7 and 8, the heat preservation water tank 200 is provided with a liquid level sensor pressure guiding pipe 208; the liquid level sensor pressure pipe 208 extends in the vertical direction, the bottom end of the liquid level sensor pressure pipe 208 is positioned in the inner cavity, the top end of the liquid level sensor pressure pipe 208 is positioned outside the heat preservation water tank 200, and the liquid level sensor is arranged in the liquid level sensor pressure pipe 208; therefore, the pressure guide pipe 208 of the liquid level sensor is convenient for the liquid level sensor to monitor the liquid level in the heat preservation water tank 200, is convenient for the installation and fixation of the liquid level sensor, and plays a role in protecting the liquid level sensor.

Preferably, the top end of the pressure pipe 208 of the liquid level sensor is provided with a flange portion, so that a sufficient installation bearing area can be provided for the installation and fixation of the liquid level sensor through the end surface of the flange portion, and the installation and fixation of the liquid level sensor are more stable and reliable.

As other arrangement structures of the anti-convection mechanism, the anti-convection mechanism can also be a float switch; the float switch can comprise a float, a transmission connecting piece and a float valve, and the float valve is arranged at the overflow port 209 and is connected with the float through the transmission connecting piece; the float valve controls the opening and closing of the overflow port 209 according to the floating of the float.

When the liquid level in the heat preservation water tank 200 rises, the floating ball floats upwards along with the rise of the liquid level, and when the liquid level in the heat preservation water tank 200 reaches the limited liquid level, the floating ball drives the ball float valve to open the overflow through the transmission connecting piece, so that the redundant water flows out through the overflow port 209, and the water level in the heat preservation water tank 200 can be effectively prevented from exceeding the limited liquid level; when the liquid level in the thermal insulation water tank 200 is lower than the limited liquid level, the floating ball drives the floating ball valve to keep the overflow open in a closed state through the transmission connecting piece, so that the inside of the thermal insulation water tank 200 is isolated from the outside.

Thereby realizing the mechanical control of the opening and closing of the overflow port 209 through a floating ball mechanism; compared with an electric control mode, the mechanical control mode not only has the advantage of long service life, but also can ensure the control action on the overflow port 209 under the condition of power failure, and is particularly suitable for the working condition that power failure or unstable voltage easily occurs.

It is easy to understand that the top surface of the insulated water tank 200 disclosed in the embodiment of the present invention may further be provided with a manhole 206 communicated with the internal cavity of the insulated water tank 200, so that the maintenance personnel can conveniently perform maintenance work on the insulated water tank 200 through the manhole 206, and the manhole 206 is provided with a cover body 207 for opening and closing the manhole 206; meanwhile, a crawling ladder 2002 is arranged on the side face of the heat preservation water tank 200, and the crawling ladder 2002 extends from the top to the bottom of the heat preservation water tank 200, so that maintenance personnel can climb conveniently.

Meanwhile, the side wall of the heat-preservation water tank 200 can be further provided with a third connecting pipe 2003, so that the heat-preservation water tank 200 can be communicated with the adjacent heat-preservation water tank 200 through the third connecting pipe 2003, the intercommunication between the two adjacent heat-preservation water tanks 200 is realized, the water level balance in the two heat-preservation water tanks 200 is further ensured, the electromagnetic heating heat supply device is particularly suitable for the combination of the heat-preservation water tanks 200 between two or more groups of electromagnetic heating heat supply equipment, and the problems that the normal work of one group of heat-preservation water tank 200 is influenced due to the transition rising of the water level and the water resource is wasted due to the discharge; the third connection pipe 2003 is provided with a third connection pipe control valve 2004 for controlling opening and closing of the third connection pipe 2003.

Preferably, the connection end of the third connection pipe 2003 and the thermal insulation water tank 200 is located below the interlayer 205, so that cold water with relatively low temperature in the lower chamber of the thermal insulation water tank 200 with higher liquid level can flow into another thermal insulation water tank 200 through the third connection pipe 2003, which not only realizes automatic balance of liquid levels in the two thermal insulation water tanks 200, but also avoids the problem that the heat loss of the thermal insulation water tank 200 affects the heat supply effect because the upper hot water of the thermal insulation water tank 200 flows into another thermal insulation water tank 200.

The bottom of the heat preservation water tank 200 can also be provided with a drain pipe 2001, and the drain pipe 2001 is provided with a control valve for controlling the opening and closing of the drain pipe 2001, so that the drain pipe 2001 can be used for cleaning and draining of the heat preservation water tank 200, and water can be drained to control the liquid level in the heat preservation water tank 200.

Example 5

The embodiment of the invention discloses heat exchange equipment which is suitable for a combined electromagnetic heating and heat supplying baking system in the embodiment 1; wherein, corresponding heat exchange equipment can be respectively arranged in each drying room of the two dense drying room areas.

Referring to fig. 9 to 11, the disclosed heat exchange apparatus may include a water separator 310, a heat exchanger 300, and a water collector 320; the heat exchanger 300 is provided with at least two rows of finned tubes, the water inlets of each row of finned tubes are respectively connected with the water outlets of the water separator 310, and the water outlets of each row of finned tubes are respectively connected with the water inlets of the water collector 320.

Each row of finned tubes of the heat exchanger 300 can be connected in parallel between the water separator 310 and the water collector 320 through the water separator 310 and the water collector 320, so that media such as hot water in the water inlet pipe 400 can flow into each row of finned tubes through the water separator 310 at the same time, and are collected in the water collector 320 after heat exchange of each row of finned tubes and then flow back to the water return pipe 500; therefore, compared with the existing heat exchanger structure arranged in the tobacco leaf drying room, the heat exchange equipment disclosed by the invention can reduce the water inlet resistance of the heat exchanger 300, is beneficial to the circulation flow of media such as hot water and the like and the reduction of conveying energy consumption, can effectively shorten the flow of the media such as hot water and the like in the finned tubes, is beneficial to keeping the uniform distribution of the heat exchanger 300 and ensuring the baking effect and the quality of tobacco leaves, is convenient for the connection of the heat exchanger 300 and the water outlet pipe and the water return pipe 500 through the water distributor 310 and the water collector 320, and avoids the problem that the water outlet pipe and the water return pipe 500 need to be modified due to the connection of each row.

Specifically, each row of finned tubes can be respectively of an S-shaped finned tube structure formed by connecting a vertical part 301 and a bent part 302, so that the heat distribution area of each row of finned tubes is increased, and the tobacco leaf baking efficiency is improved; one end of the S-shaped finned tube structure is a water inlet and is used for being connected with a water outlet 311 of the corresponding water separator 310, and the other end of the S-shaped finned tube structure is a water outlet and is used for being connected with a water inlet 321 of the corresponding water collector 320.

Meanwhile, the vertical part 301 and the bending part 302 can be of an integrally formed structure, so that compared with a welding structure formed by adopting a welding mode for the vertical part 301 and the bending part 302, the finned tube is convenient to process and manufacture, the manufacturing difficulty and the manufacturing cost are reduced, and the integral structural strength of the finned tube can be ensured.

In order to improve the baking effect of the heat exchanger 300 on tobacco leaves, the vertical parts 301 of the two adjacent rows of finned tubes can be arranged in a staggered manner, so that the shielding between the vertical parts 301 of the front row of finned tubes and the rear row of finned tubes can be avoided, the flow of circulating air of the drying room flowing through the heat exchanger 300 is increased, and the effective contact area and time of the heat exchange action of the circulating air of the drying room and the vertical parts 301 of the rows of finned tubes are improved; therefore, the heat exchange efficiency of the heat exchanger 300 is well improved, and the heat absorption of the circulating air is facilitated, so that the temperature requirement of tobacco leaf baking is better met.

In the heat exchange equipment disclosed by the invention, the water separator 310 can comprise a first box body, wherein the first box body is provided with a water inlet 312 for connecting with a water inlet pipe 400 and a water outlet 311 for respectively connecting with the water inlets of each row of finned tubes; therefore, media such as hot water heated by the electromagnetic heating water supply equipment can enter the first box body through the water inlet 312 connected with the water inlet pipe 400, then flow into the rows of finned tubes simultaneously through distribution of the water outlets 311 arranged on the first box body, and exchange heat with circulating air of the drying room at the vertical parts 301 of the rows of finned tubes.

The water collector 320 may include a second case provided with a water inlet 321 for respectively connecting the water outlets of each row of the finned tubes, and a water outlet 322 for connecting the water return pipe 500; therefore, media such as cold water (cold water is compared with hot water before heat exchange) after heat exchange and temperature reduction in the rows of finned tubes can be simultaneously collected in the second box body through the water inlets 321 arranged in the second box body, then flow back to the water return pipe 500 through the water outlet 322 connected with the water return pipe 500, and can be conveyed to the electromagnetic heating water supply equipment for reheating and temperature rise so as to realize circulating heat supply.

Meanwhile, as shown in fig. 10, the water inlet 312 of the water separator 310 and the water outlet 322 of the water collector 320 are provided with the second flange portions 330, so that the water inlet 312 of the water separator 310 can be attached to the flange portions of the water inlet pipe 400 and the water return pipe 500 through the corresponding second flange portions 330, which not only facilitates the connection and fixation between the water inlet 312 of the water separator 310 and the water inlet pipe 400, but also increases the attachment area of the connection ends, and is beneficial to improving the sealing property and the connection firmness of the connection ends; generally, the second flange portion 330 may be provided with a sealing element such as a sealing gasket to ensure sealability of the connection.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A combined electromagnetic heating and heat supplying baking system for multiple zones is characterized by comprising at least two groups of electromagnetic heating and heat supplying baking systems, wherein heat supplying water outlet pipes of the at least two groups of electromagnetic heating and heat supplying baking systems are connected through a first connecting pipe, and heat supplying water return pipes are connected through a second connecting pipe; the first connecting pipe is provided with a first connecting pipe control valve for controlling the opening and closing of the first connecting pipe, and the second connecting pipe is provided with a second connecting pipe control valve for controlling the opening and closing of the second connecting pipe.

2. The combined electromagnetic heating and heat supplying baking system for multiple zones according to claim 1, wherein the electromagnetic heating and heat supplying baking system comprises an electric heating water supply device, the heat supplying water outlet pipe, the heat supplying water return pipe and a heat exchanging device arranged in the baking room; the heat supply water outlet of the electromagnetic heating water supply equipment is connected with the water inlet end of the heat exchange equipment through the heat supply water outlet pipe, and the heat supply water return port of the electromagnetic heating water supply equipment is connected with the water outlet end of the heat exchange equipment through the heat supply water return pipe.

3. The combined electromagnetic heating and toasting system for multiple zones according to claim 2, wherein said electromagnetic heating water supply devices are provided in two groups; two sets of electromagnetic heating water supply equipment's heat supply delivery port is connected in same the heat supply outlet pipe, two sets of electromagnetic heating water supply equipment's heat supply return water mouth is connected in same the heat supply wet return, and at least one set of electromagnetic heating water supply equipment's heat supply delivery port and heat supply return water mouth are provided with the control valve.

4. The combined electromagnetic heating baking system for multiple zones according to claim 3, wherein the electromagnetic heating water supply equipment comprises an electromagnetic hot water device and a heat preservation water tank; the holding water tank is provided with circulation outlet pipe, circulation inlet tube heat supply delivery port with heat supply return water mouth, just circulation outlet pipe with electromagnetism hot water system's heating water piping connection, the circulation inlet tube with electromagnetism hot water system's heating goes out water piping connection, the heat supply delivery port with heat supply water piping connection, heat supply return water mouth with heat supply return water union coupling.

5. The combined electromagnetic heating-heating baking system for multiple zones according to claim 4, wherein the hot water tank is provided with a third connecting pipe, and the third connecting pipe is provided with a third connecting pipe control valve; the heat-preservation water tanks of the two groups of electromagnetic heating water supply equipment are communicated through a third connecting pipe, and a third connecting pipe control valve is used for controlling the opening and closing of the third connecting pipe.

6. The combined electromagnetic heating-heating thermal toasting system for multiple zones according to claim 5, wherein the inner chambers of the holding tank are provided with a laterally extending partition, and the inner chambers of the holding tank are separated by the partition to form an upper chamber and a lower chamber; the interlayer is provided with an opening, and the upper cavity and the lower cavity are communicated through the opening; the circulating water outlet pipe and the heat supply water return port are arranged on the side wall of the lower cavity; the circulating water inlet pipe and the heat supply water outlet are arranged on the side wall of the upper cavity.

7. The combined electromagnetic heating heat supply baking system for multiple zones according to claim 6, wherein the inner chamber of the heat-preservation water tank is further provided with an interlayer bracket, one end of the interlayer bracket is connected with the inner wall of the heat-preservation water tank, and the other end of the interlayer bracket is connected with the interlayer.

8. The combined electromagnetic heating baking system for multiple zones according to claim 4, wherein the electromagnetic hot water device comprises the heating water inlet pipe, the heating water outlet pipe and at least two electromagnetic heaters connected in parallel between the heating water inlet pipe and the heating water outlet pipe.

9. The combined electromagnetic heating baking system for multiple zones as claimed in claim 8, wherein the electromagnetic heater comprises a cylinder with a cavity inside and an electromagnetic coil, the electromagnetic coil is wound around the outer sidewall of the cylinder, and the cylinder is provided with a water inlet and a water outlet respectively communicated with the cavity; the water inlet of each electromagnetic heater is respectively connected with the heating water inlet pipe, and the water outlet of each electromagnetic heater is respectively connected with the heating water outlet pipe.

10. The combined electromagnetic heating-heating thermal toasting system for multiple zones according to claim 2, wherein said heat exchange means comprises a water separator, a heat exchanger and a water collector; the heat exchanger is provided with at least two rows of finned tubes, water inlets of the finned tubes of each row are respectively connected with water outlets of the water distributor, and water outlets of the finned tubes of each row are respectively connected with water inlets of the water collector.