CN213178841U - Fluid heating device using secondary medium - Google Patents
Fluid heating device using secondary medium Download PDFInfo
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- CN213178841U CN213178841U CN202021320065.1U CN202021320065U CN213178841U CN 213178841 U CN213178841 U CN 213178841U CN 202021320065 U CN202021320065 U CN 202021320065U CN 213178841 U CN213178841 U CN 213178841U
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- secondary medium
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Abstract
The utility model provides an use fluid heating device of second grade medium, including casing, heater, second grade medium and heat exchanger, heater and heat exchanger all are located the casing inner chamber, and the heat exchanger setting is around the heater, and the second grade medium is filled in the casing inner chamber. The second grade medium can be solid second grade medium, liquid second grade medium or gaseous second grade medium, the utility model discloses a more excellent heat transfer structure, through the effectual thermal efficiency that improves the second grade heat transfer of second grade medium of excellent performance. The operation cost of the user is reduced.
Description
Technical Field
The utility model relates to an electric heater equipment field, concretely relates to use fluid heating device of second grade medium.
Background
In the fields of daily life, production, scientific research and the like, fluid is often heated. At present, the existing fluid heater realizes heating through a direct contact electric heater, and certain danger and the high using and maintaining difficulty can be generated by direct heating in the heating process of a mixed medium under the conditions of complex environment, high pressure and high use and maintenance difficulty. The high-corrosivity medium and the medium which has a strict requirement on the temperature of the tube surface of the heating tube directly contact with the heating tube, so that the heating tube is easily damaged, and the safety is reduced; the existing fluid heater can not heat some high-pressure material media, as is known, the requirement of high pressure on large-quantity welding detection of a pressure container and a heater pipe bundle is extremely high, the conventional detection means can not be realized, corresponding detection can be completed only by large-scale detection equipment, the difficulty of manufacturing the equipment is also extremely high, and the rapid rise of the cost is caused.
Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a high-efficient and manifold fluid heating device who uses second grade medium of usage and application method thereof.
In order to solve the above technical problem, the present invention provides a fluid heating device using a secondary medium, which comprises a housing, a heater, a secondary medium and a heat exchanger;
the heater and the heat exchanger are both positioned in the inner cavity of the shell;
the heat exchanger is arranged around the heater; the secondary medium is filled in the inner cavity of the shell.
As to the utility model discloses use the fluid heating device's of second grade medium improvement:
the secondary medium is a solid secondary medium; the solid secondary medium is a metal.
As a further improvement to the fluid heating device of the present invention using a secondary medium:
the secondary medium is a liquid secondary medium; the liquid secondary medium is water liquid, oil liquid or molten salt;
the fluid heating device further comprises an expansion tank for storing overflowing liquid secondary medium, and the shell is communicated with the expansion tank.
As a further improvement to the fluid heating device of the present invention using a secondary medium:
the secondary medium is a gas secondary medium; the gas secondary medium is nitrogen or argon.
As a further improvement to the fluid heating device of the present invention using a secondary medium:
the liquid outlet of the shell is communicated with the input port of the expansion tank through an oil outlet pipeline with a flow limiting valve; the outlet of the expansion groove is communicated with the inlet of the shell through an oil inlet pipeline with an oil replenishing pump.
As a further improvement to the fluid heating device of the present invention using a secondary medium:
the temperature measuring tube in the junction box penetrates through the heat dissipation layer and the heat insulation layer and then extends into the inner cavity of the shell.
As a further improvement to the fluid heating device of the present invention using a secondary medium:
the heat exchanger is a heat exchange coil, and the heater is a heating rod or a heating pipe; the heat exchanger is spirally wound around the heater.
The utility model discloses a device structure is usually operated at ordinary pressure electric heater equipment, and second grade medium and heater all are in stable safe conventional environment, adopt the material that the heat conductivity is high as the medium, and the heater invades the second grade medium completely, and the heat exchanger also invades the second grade medium completely for the heat that the heater arouses can the efficient transmit for the inside by heating medium of heat exchanger.
The secondary medium can adopt a circulating material, metal powder, mineral powder and the like, and can also adopt a pouring and die-casting mode to enable the secondary medium to be in full contact with the heater and the heat exchanger. The secondary medium is composed of heat conducting oil, metal alloy, water, molten salt and other forms, and meets different temperature requirements of users. Depending on the media conditions.
The utility model discloses use fluid heating device of second grade medium and application method's technical advantage does:
1. the cleanliness of the pure materials is guaranteed, secondary pollution is avoided, the heat exchanger can be independently cleaned, and appropriate materials without influence can be selected correspondingly. The processing difficulty is low, and the detection means is convenient.
2. The high pressure bearing capacity of the high pressure material can fully reserve enough allowance in the small-caliber heat exchanger, and is very convenient and reliable from the detection point of view. Bear same material pressure, the steel pipe wall thickness that equipment that the diameter is bigger needs to pay is bigger can obtain same pressure-bearing effect, has also caused very big difficulty to equipment's detection and production. The utility model solves the difficult problem.
3. The utility model discloses a more excellent heat transfer structure, through the effectual thermal efficiency that has improved the second grade heat transfer of second grade medium of excellent performance. The operation cost of the user is reduced.
4. The most direct thing of the thorough change of structure is that the actual cost of the product with the same function is reduced, the equipment adoption cost of the user is saved, the basic guarantee is provided for the survival and development of enterprises, and the higher competitiveness is provided.
5. To some corrosivity stronger, or can not with the medium of heating pipe direct contact, the utility model discloses a form of second grade media heating, life that can greatly increased heater, the security of heating process can ensure simultaneously.
6. The single machine has long service life, is convenient to maintain and replace, does not need to relate to heated materials, and only needs to maintain and replace the heater in an unrelated area. The secondary medium has low loss and does not need to be replaced frequently.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a fluid heater using a solid secondary medium according to the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic diagram of a fluid heater of the present invention using a liquid secondary medium;
FIG. 4 is a schematic diagram of a second embodiment of the present invention of a fluid heater using a liquid secondary medium;
FIG. 5 is a schematic top view of the structure of FIG. 4;
fig. 6 is a schematic diagram of the fluid heater using a gaseous secondary medium according to the present invention.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
The utility model discloses a conventional heater 3 heats, through second grade medium to heat exchanger 4 conduction heat, transmits heat to its inside by heating medium through heat exchanger 4.
The heat exchanger 4 is a heat exchange coil. The heater 3 can be a heating rod or a heating pipe, and after being electrified, the heater 3 generates heat to conduct heat to the secondary medium. The container main body is a secondary medium carrier normal pressure container. The secondary medium can be a solid secondary medium 21, a liquid secondary medium 22 or a gas secondary medium 23, and can be solid (metal alloy), liquid (water liquid, oil liquid, molten salt), gas (various gases) and other forms.
The secondary medium in turn conducts heat to the medium inside it through the heat exchanger 4. The temperature of the medium required by the user is achieved by adjusting the temperature of the heater 3 and the flow rate of the heated medium in the heat exchanger 4. The choice of secondary medium depends on the different temperature requirements of the user and the different medium conditions.
In the embodiment, the secondary medium is a solid secondary medium 21, and as shown in fig. 1-2, the container body comprises a shell 1, and the shell 1 serves as an insulating layer.
The solid secondary medium 21 is a metal alloy medium such as cast aluminum, cast copper or cast steel.
The heater 3 extends into the inner cavity of the shell 1, and the heat exchanger 4 spirally surrounds the heater 3, namely the heater 3 penetrates through the center of the heat exchanger 4. Both the inlet and the outlet of the heat exchanger 4 extend through the housing 1 to the outside of the housing 1. The solid secondary medium 21 is then poured or die-cast into the inner cavity of the housing 1, so that the fluid heater 3 is the housing 1, the solid secondary medium 21, the heat exchanger 4 and the heater 3 from outside to inside respectively. The heat exchanger 4 is filled with a heated medium.
The solid secondary medium 21 is also provided with a temperature measuring hole 211.
The central control system is connected with the heater 3, and the inside of the central control system is controlled by adopting a silicon controlled stepless power regulation mode pid. The function of how much output is required is ensured. The control system which is more stable and energy-saving can realize multiple protection functions and improve the control precision, so that the energy utilization rate is further improved.
Example 2 fluid heating apparatus using a secondary medium, as shown in figure 3,
in the present embodiment, the secondary medium is a liquid secondary medium 22, and the container body includes a housing 1 and an expansion tank 13; the rest is equivalent to embodiment 1.
The liquid secondary medium 22 is a liquid medium such as water, oil, molten salt, etc.
The expansion tank 13 is disposed directly above the housing 1. The housing 1 communicates with the expansion tank 13: a liquid outlet of the shell 1 is communicated with an input port of the expansion tank 13 through an oil outlet pipeline with a flow limiting valve; the outlet of the expansion tank 13 is communicated with the inlet of the shell 1 through a liquid inlet pipeline with an oil replenishing pump.
In the liquid type (fluid heating apparatus using a secondary medium) in which the liquid secondary medium 22 is thermally expanded due to the heating process, in order to ensure internal pressureless operation, when the liquid secondary medium 22 is expanded and further buffering is required, the excess liquid secondary medium 22 overflows to the expansion tank 13. In addition, the secondary liquid medium 22 is also lost when being heated, if the expansion tank 13 is at a high position, when the secondary liquid medium 22 in the shell 1 is insufficient, the expansion tank 13 can automatically replenish liquid through a liquid inlet pipeline, when the solution in the expansion tank 13 is insufficient, a low liquid level signal can be made in the hot container 1 and sent to a liquid replenishing pump through a controller, and the liquid is replenished to a standard liquid level line through an external solution tank (the position also has a liquid level switching value signal).
The heat dissipation layer 7 avoids appearing the danger of cable current-carrying decline and the not enough damage of cable temperature resistance, and 6 main purposes of thermal-insulated heat preservation are as thermal shock layer, and the heat that comes out is passed to 1 part flange part of direct isolation casing, and heat dissipation layer 7 is the buffer, and the heat that thermal-insulated heat preservation 6 can't be kept apart completely can reduce the temperature of terminal box inner chamber once more through the mode heat dissipation of natural convection current or strong wind convection current at heat dissipation layer 7, can realize explosion-proof type design.
The bottom of the shell 1 is provided with a sewage draining outlet 11 for draining sewage.
The heater 3 extends into the inner cavity of the shell 1, the heat exchanger 4 is spirally wound around the heater 3, the liquid inlet and the liquid outlet of the heat exchanger 4 penetrate through the shell 1 and extend to the outer side of the shell 1, and a heated medium is introduced into the heat exchanger 4.
The inner cavity of the shell 1 is filled with a liquid secondary medium 22, so that the fluid heater 3 is respectively the shell 1, the liquid secondary medium 22, the heat exchanger 4 and the heater 3 from outside to inside. The heat exchanger 4 is filled with a heated medium.
A flap liquid level meter 12 is mounted on the expansion tank 13, and the flap liquid level meter 12 is used for displaying the liquid amount of the expansion tank 13.
Filling the inner cavity of the shell 1 with a liquid secondary medium 22, then starting the heater 3, heating the heat exchanger 4 by the heater 3 through the liquid secondary medium 22, and introducing a heated medium into the heat exchanger 4 for heating;
Liquid second grade medium 22 in the casing 1 inner chamber is heated the inflation, overflows the expansion tank 13 through oil outlet pipe and temporarily stores, and when liquid second grade medium 22 in the casing 1 inner chamber is not enough, the oil supply pump can be opened, and liquid second grade medium 22 in the expansion tank 13 passes through the inlet liquid pipeline and gets into the casing 1 inner chamber.
Example 3 fluid heating device using a secondary medium, as shown in fig. 4-5. In the present embodiment, the secondary medium is a liquid secondary medium 22, and the container body includes a housing 1 and an expansion tank 13; the expansion tank 13 is positioned on one side of the shell 1, and the expansion tank 13 is communicated with an oil inlet of the expansion tank 13 through an oil outlet pipeline with a valve. The rest is equivalent to embodiment 1.
And a flap liquid level meter 12 is arranged on the outer wall of the shell 1, and the flap liquid level meter 12 is used for displaying the amount of liquid in the inner cavity of the shell 1.
Example 4 fluid heating device using secondary medium, as shown in fig. 6;
in this embodiment, the secondary medium is a gas secondary medium 23, the container body includes a shell 1, and the shell 1 serves as an insulating layer.
The heater 3 extends into the inner cavity of the shell 1, the heat exchanger 4 spirally surrounds the heater 3, and an inlet and an outlet of the heat exchanger 4 penetrate through the shell 1 and extend to the outer side of the shell 1. Then the gas secondary medium 23 is introduced into the inner cavity of the shell 1, so that the fluid heater 3 is respectively the container body, the gas secondary medium 23, the heat exchanger 4 and the heater 3 from outside to inside. The rest is equivalent to embodiment 1.
The outer surface of the housing 1 is provided with an ear mount 9.
The gas used for the secondary gas medium 23 is mostly a safe passivation gas, such as: nitrogen, argon, and the like.
Can set up automatic safety discharge valve on the casing 1, can discharge unnecessary gas (gaseous second grade medium 23) when atmospheric pressure is too high, casing 1 adopts safer seamless steel pipe structure to use relatively, has increased the inside pressure of electric contact pressure gauge real time monitoring, but the gas expansion coefficient is limited, so relative safety level is very high. The gas secondary medium 23 needs to be inflated in an inflation exhausting mode, but if the experiment requirement is high, air is required to be pumped after vacuumizing, the purity of the gas inside is guaranteed, and the safety problem is avoided.
The solid secondary medium 21 of example 1 is currently cast iron, which has the highest strength and the most excellent pressure resistance; in addition, the solid secondary medium 21 adopts a powder solid type, and the magnesium oxide mgo and graphite powder are filled and pressed according to the mass ratio of 1:1 to obtain higher heat resistance; the solid secondary medium 21 is preferably a copper casting for best heat conduction.
The liquid secondary medium 22 in examples 2 and 3 adopts heat conduction oil and composite molten salt (such as composite molten salt with the mass ratio of NaCl to KCl being 1: 1) which has the most excellent heat conduction and use effects, especially aims at high-temperature application, has the limit temperature of up to 650 ℃, is mainly used for test, is clean and has excellent temperature uniformity. In addition, a polyethylene glycol aqueous solution can be used, which mainly aims at the low-temperature environment and effectively avoids the problems of low-temperature freezing and low-temperature heat conduction.
The nitrogen gas used most at present in example 4 is relatively safe. The heater can not react with the material of the heater 3, and has no danger of flammability and explosiveness, and the application in the chemical field is very wide.
Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (7)
1. Fluid heating apparatus using a secondary medium, characterized by: comprises a shell (1), a heater (3), a secondary medium and a heat exchanger (4);
the heater (3) and the heat exchanger (4) are both positioned in the inner cavity of the shell (1);
the heat exchanger (4) is arranged around the heater (3); the secondary medium is filled in the inner cavity of the shell (1);
the secondary medium is a solid secondary medium (21), a liquid secondary medium (22) or a gas secondary medium (23).
2. The fluid heating apparatus using a secondary medium as set forth in claim 1, wherein:
the solid secondary medium (21) is a metal.
3. The fluid heating apparatus using a secondary medium as set forth in claim 1, wherein:
the liquid secondary medium (22) is water liquid, oil liquid or molten salt;
the fluid heating device further comprises an expansion tank (13) for storing overflowing liquid secondary medium (22), and the shell (1) is communicated with the expansion tank (13).
4. The fluid heating apparatus using a secondary medium as set forth in claim 2, wherein:
the gas secondary medium (23) is nitrogen or argon.
5. The fluid heating apparatus using a secondary medium as set forth in claim 3, wherein:
a liquid outlet of the shell (1) is communicated with an input port of the expansion tank (13) through an oil outlet pipeline with a flow limiting valve; the outlet of the expansion groove (13) is communicated with the inlet of the shell (1) through an oil inlet pipeline with an oil supplementing pump.
6. The fluid heating apparatus using a secondary medium as set forth in claim 5, wherein:
casing (1) one side opening, opening part are provided with thermal-insulated heat preservation (6), and thermal-insulated heat preservation (6) are connected with the terminal box through heat dissipation layer (7), and temperature tube (8) in the terminal box pass and stretch into in casing (1) inner chamber behind heat dissipation layer (7) and the thermal-insulated heat preservation (6).
7. A fluid heating apparatus using a secondary medium as claimed in any one of claims 1 to 6, wherein:
the heat exchanger (4) is a heat exchange coil, and the heater (3) is a heating rod or a heating pipe; the heat exchanger (4) is spirally wound around the heater (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320065.1U CN213178841U (en) | 2020-07-08 | 2020-07-08 | Fluid heating device using secondary medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021320065.1U CN213178841U (en) | 2020-07-08 | 2020-07-08 | Fluid heating device using secondary medium |
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| CN213178841U true CN213178841U (en) | 2021-05-11 |
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| CN202021320065.1U Active CN213178841U (en) | 2020-07-08 | 2020-07-08 | Fluid heating device using secondary medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592512A (en) * | 2023-04-26 | 2023-08-15 | 无锡市前卫化工装备有限公司 | Gas heating device |
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2020
- 2020-07-08 CN CN202021320065.1U patent/CN213178841U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592512A (en) * | 2023-04-26 | 2023-08-15 | 无锡市前卫化工装备有限公司 | Gas heating device |
| CN116592512B (en) * | 2023-04-26 | 2024-02-06 | 无锡市前卫化工装备有限公司 | Gas heating device |
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