CN209857522U - Steam-electric hybrid heater, vacuum drying equipment and transformer - Google Patents
Steam-electric hybrid heater, vacuum drying equipment and transformer Download PDFInfo
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- CN209857522U CN209857522U CN201920502770.4U CN201920502770U CN209857522U CN 209857522 U CN209857522 U CN 209857522U CN 201920502770 U CN201920502770 U CN 201920502770U CN 209857522 U CN209857522 U CN 209857522U
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Abstract
The present disclosure relates to a steam-electric hybrid heater. The steam-electric hybrid heater comprises a circulating pipeline, a controller, an electric heater and a brazing plate type heat exchanger, wherein the circulating pipeline is connected with a target heated device, and a heat exchange medium is arranged in the circulating pipeline; when the available steam quantity of the steam source is smaller than a preset value, the controller can output a first signal; when the available steam quantity of the steam source is larger than a preset value, the controller can output a second signal; the electric heater is connected with the circulating pipeline and can respond to the first signal to heat the heat exchange medium; the brazing plate type heat exchanger is connected with the circulating pipeline and can respond to the second signal and heat the heat exchange medium according to the steam heat of the steam source. The steam-electric hybrid heater provided by the disclosure can save energy consumption and improve economic benefits.
Description
Technical Field
The utility model relates to a vacuum drying equipment technical field particularly, relates to a vapour electric hybrid heater, vacuum drying equipment and transformer.
Background
The kerosene gas phase vacuum drying equipment is suitable for drying and insulating treatment equipment of high-capacity transformers, converter transformers, high-voltage sleeves and the like in high voltage, ultrahigh voltage and extra-high voltage. The heat source in the drying process is sometimes used by a heat conduction oil electric heater, the heat conduction oil electric heater takes electricity as an energy source, heat conduction oil is used as a heat exchange medium, a heating element is directly heated in contact with the heat exchange medium, the heated high-temperature heat exchange medium is forced to carry out liquid phase circulation by using a high-temperature circulating pump, heat is transferred to heat utilization equipment such as a tank wall and an evaporator, after the heat utilization equipment, a part of heat is released from the heat exchange medium to heat a body, the heat which is not released and the heat exchange medium return to the heater again, then the heat is absorbed and transferred to the heat utilization equipment, and the process is repeated in this way, so that the continuous transfer of the heat is realized, the temperature of a heated object is increased, and the heating process requirement is met.
The electric heater for the heat-conducting oil has the advantages that the power consumption is very high, the cost is very high, the steam is relatively economical, particularly, the steam generated by a power plant can be recycled, the steam is very economical, but in winter, particularly in the north, residents need to use a large amount of steam for heating, the steam is insufficient or unstable, the drying operation of the kerosene gas-phase vacuum drying equipment is influenced, and the technological requirements are difficult to achieve.
Usually, this problem is solved by a self-contained boiler, but the operation cost becomes very high, especially the environmental protection requirement is higher and higher, the operation cost of the self-contained boiler is unacceptable, the production process is adversely affected, and the production progress is influenced.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present disclosure is to provide a steam-electric hybrid heater capable of saving energy consumption.
According to an aspect of the present disclosure, there is provided a hybrid steam-electric heater including:
the circulating pipeline is connected with the target heated device, and a heat exchange medium is arranged in the circulating pipeline;
the controller can output a first signal when the available steam quantity of the steam source is smaller than a preset value; when the available steam quantity of the steam source is larger than a preset value, the controller can output a second signal;
the electric heater is connected with the circulating pipeline and can respond to the first signal to heat the heat exchange medium;
and the brazing plate type heat exchanger is connected with the circulating pipeline and can respond to the second signal and heat the heat exchange medium according to the steam heat of the steam source.
In an exemplary embodiment of the present disclosure, the electric heater and the brazed plate heat exchanger are connected in series on the circulation line.
In an exemplary embodiment of the present disclosure, the heat exchange medium is a heat transfer oil.
In an exemplary embodiment of the present disclosure, the hybrid steam-electric heater further includes:
and the regulating valve is arranged on the air inlet pipeline of the brazing plate type heat exchanger and used for regulating the steam flow.
In an exemplary embodiment of the present disclosure, the hybrid steam-electric heater further includes:
and the circulating pump is arranged on the circulating pipeline and used for driving the heat exchange medium to flow in the circulating pipeline.
In an exemplary embodiment of the present disclosure, the hybrid steam-electric heater further includes:
and the flow detector is arranged on the circulating pipeline and used for acquiring the flow of the heat exchange medium in the circulating pipeline.
In an exemplary embodiment of the present disclosure, the hybrid steam-electric heater further includes:
and the temperature measurer is arranged on the circulating pipeline and used for obtaining the temperature of the heat exchange medium.
In an exemplary embodiment of the present disclosure, the hybrid steam-electric heater further includes:
the expansion tank is arranged on the circulating pipeline, and the cavity of the expansion tank is communicated with the circulating pipeline.
According to another aspect of the present disclosure, there is also provided a vacuum drying apparatus including the steam-electric hybrid heater provided in any one of the above exemplary embodiments.
According to still another aspect of the present disclosure, there is also provided a transformer including the vacuum drying apparatus described above.
According to the steam-electric hybrid heater provided by the disclosure, steam is cooperatively applied by the brazing plate type heat exchanger and electricity through the electric heater, and a heat exchange medium is directly heated. A steam heating system is preferentially adopted, the efficiency of the brazing plate type heat exchanger is very high, when steam is sufficient, the temperature of a heat exchange medium can quickly rise to reach a target temperature, and at this time, the electric heater is used for standby; when the steam is insufficient or unstable, the electric heater is started to supplement the steam, so that the low-cost energy steam is fully utilized, the influence on the production process when the steam is insufficient is fully overcome, the reliability of the whole electric heater is improved, the operation cost is reduced, the resources are saved, and the economic benefit is greatly improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic view of a steam-electric hybrid heater provided in an embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting on the number of their objects.
The embodiment of the disclosure provides a steam-electric hybrid heater. As shown in fig. 1, the steam-electric hybrid heater comprises a circulation pipeline 101, a controller, an electric heater 103 and a brazed plate heat exchanger 102, wherein the circulation pipeline 101 is connected with a target heated device, and a heat exchange medium is arranged in the circulation pipeline 101; when the available steam quantity of the steam source is smaller than a preset value, the controller can output a first signal; when the available steam quantity of the steam source is larger than a preset value, the controller can output a second signal; the electric heater 103 is connected with the circulating pipeline and can respond to a first signal to heat the heat exchange medium; the brazed plate heat exchanger 102 is connected with the circulating pipeline 101 and can respond to the second signal and heat the heat exchange medium according to the steam heat of the steam source.
Specifically, the heat exchange medium has two heating modes, and the heat exchange medium can be heated by using the electric heater 103 or the brazed plate heat exchanger 102. When the available steam amount of the steam source (namely the steam amount for heating the heat exchange medium) is larger than the preset value, the controller outputs a second signal, the brazed plate heat exchanger 102 responds to the second signal and heats the heat exchange medium according to the steam heat of the steam source, namely, steam is introduced into the brazed plate heat exchanger 102 to heat the brazed plate heat exchanger 102, and the brazed plate heat exchanger 102 heats the heat exchange medium to the preset temperature through heat conduction, so that the purpose of heating the heat exchange medium by using the steam is realized; when the available steam quantity of the steam source is smaller than the preset value, the electric heater 103 is used for directly heating the heat exchange medium, the influence on the heating of the heat exchange medium when the steam quantity is insufficient is avoided, and the reliability of the heater is improved.
According to the steam-electric hybrid heater provided by the disclosure, steam is cooperatively applied by two energy sources, namely the brazed plate heat exchanger 102 and the electric passing electric heater 103, and a heat exchange medium is directly heated. A steam heating system is preferably adopted, the efficiency of the brazed plate heat exchanger 102 is very high, when steam is sufficient, the temperature of a heat exchange medium can quickly rise to reach a target temperature, and the electric heater 103 is used for standby at this time; when the steam is insufficient or unstable, the electric heater 103 is started to supplement the steam, so that the low-cost energy steam is fully utilized, the influence on the production process when the steam is insufficient is fully overcome, the reliability of the whole electric heater 103 is improved, the operation cost is reduced, the resources are saved, and the economic benefit is greatly improved.
As shown in fig. 1, an electric heater 103 and a brazed plate heat exchanger 102 are connected in series on a circulation pipeline 101 and cooperate with each other to heat a heat exchange medium.
In particular, the heat exchange medium is a heat transfer oil, such as kerosene. Under the condition of basic normal pressure, the heat conduction oil can obtain very high operating temperature, namely the operating pressure and the safety requirement of a high-temperature heating system can be greatly reduced, and the reliability of the steam-electric hybrid heater is improved; the process requirements of heating and cooling at different temperatures can be met in a wider temperature range, or the process requirements of high-temperature heating and low-temperature cooling can be simultaneously realized by using the same heat-conducting oil in the same system, namely the complexity of the system and the operation can be reduced; the water treatment system and equipment are omitted, the heat efficiency of the system is improved, and the maintenance workload of the equipment and pipelines is reduced. Of course, the heat exchange medium of the present disclosure may also be other heat exchange media, such as water.
As shown in fig. 1, the steam-electric hybrid heater further includes a regulating valve 106. The regulating valve 106 is disposed on an air inlet pipeline of the brazed plate heat exchanger 102 (the arrow in the figure indicates the steam flowing direction), and is used for regulating the steam flow, so as to control the heating temperature of the heat exchange medium. In addition, when the electric heater 103 is started to heat the heat transfer medium due to insufficient steam or instability, the regulating valve 106 can be closed to improve the precise control of the heat removal temperature of the heat transfer medium by the electric heater 103.
The regulating valve 106 can be an electric valve or a manual valve, the electric valve can realize automatic control, the electric valve and the electric heater 103 can be electrically connected with a controller, and the heating mode of the heat exchange medium is switched by remote operation of the controller.
As shown in fig. 1, the steam-electric hybrid heater further includes a circulation pump 104. The circulation pump 104 is disposed on the circulation line, and is used for driving the heat exchange medium to flow in the circulation line 101. Specifically, the circulation pump 104 may be electrically connected to a controller, and the controller may control the circulation pump 104 to operate to control the flow rate of the circulating liquid in the circulation pipeline 101, so as to control the heating temperature of the target heated device.
The circulation pump 104 may be a vertical, horizontal or other type of circulation pump 104, and a person skilled in the art may select the circulation pump 104 meeting the required technical parameters according to the flow rate of the heat exchange medium, which is not limited in this disclosure.
As shown in fig. 1, the steam-electric hybrid heater further includes a flow monitor 105. The flow monitor 105 is disposed on the circulation line 101, and is used for acquiring the flow of the heat exchange medium in the circulation line 101. Specifically, the flow monitor 105 is disposed on the circulation line 101 between the electric heater 103 and the brazed plate heat exchanger 102, but the flow monitor 105 may be disposed at other positions of the circulation line 101, which is not limited in the present application.
The flow monitor 105 is electrically connected with the controller, and the controller can acquire the flow velocity of the heat exchange medium acquired by the flow monitor 105 to control the circulating pump 104 and the electric heater 103 or the brazed plate heat exchanger 102 according to the flow velocity of the heat exchange medium, so that the heating temperature of the target heated device is further controlled, and the accurate control of the steam-electric hybrid heater on the heating temperature of the target heated device is improved.
As shown in fig. 1, the steam-electric hybrid heater further includes at least one temperature measurer. The temperature measurer is arranged on the circulating pipeline 101 and used for obtaining the temperature of the heat exchange medium. Specifically, a plurality of temperature measuring devices are provided, and the temperature measuring devices may be provided on the inlet and outlet of the electric heater 103, the air intake line of the brazed plate heat exchanger 102, and the circulation line 101 between the target heated device and the brazed plate heat exchanger 102. It should be clear to those skilled in the art that more temperature heaters can be provided to further enhance the precise control of the heating temperature of the target heated device, and the present disclosure does not limit the number of the temperature measuring devices, and all solutions that can achieve the same technical effect belong to the protection scope of the present disclosure.
The temperature measurer is electrically connected with the controller, the controller can obtain a temperature value measured by the temperature measurer, and the electric heater 103, the circulating pump 104 or the regulating valve 106 can be regulated according to the temperature value, so that the heating temperature of the target heated device can be accurately controlled.
As shown in fig. 1, the steam-electric hybrid heater further includes an expansion tank 107. The expansion tank 107 is provided on the circulation line 101, and the cavity of the expansion tank 107 communicates with the circulation line 101. Specifically, the expansion tank 107 is provided at a higher position than the height of the target heated device with respect to the mounting surface. When the heat exchange medium can be heated to a preset temperature, the volume of the heat exchange medium can be increased due to the principle of expansion with heat and contraction with cold, the expansion tank 107 is arranged, the volume of the heat exchange medium which is formed after thermal expansion can be contained in the expansion tank 107, and the heat exchange medium flows back to the circulating pipeline 101 after being cooled.
Wherein, the top of the expansion tank 107 can be opened with an exhaust hole to balance the air pressure in the expansion tank 107 when the heat exchange medium expands with heat and contracts with cold.
Further, as shown in fig. 1, the target heated member includes a pipe wall 201 to be heated and an evaporator 202, and the pipe wall 201 and the evaporator 202 are provided with a steam-electric hybrid heater, respectively. The steam-electric hybrid heater further comprises a heat exchange medium storage 108, and the steam-electric hybrid heaters of the pipe wall 201 and the evaporator 202 can share one heat exchange medium storage 108 or are respectively provided with one heat exchange medium storage 108. A valve 109 is arranged on the circulating pipeline 101 which is connected with the outlets of the electric heater 103 and the heat exchange medium storage 108, and when the steam-electric hybrid heater stops working or needs maintenance and overhaul, the valve 109 can be closed.
In addition, the circulating pump 104, the regulating valve 106, the temperature measuring device and other devices of the present disclosure are all of high temperature resistant type, so as to improve the reliability of the steam-electric hybrid heater.
The present disclosure also provides a vacuum drying apparatus. The vacuum drying device comprises the steam-electric hybrid heater, and the technical effects of the steam-electric hybrid heater can be referred to the description of the technical effects of the steam-electric hybrid heater, which is not repeated herein.
The present disclosure also provides a transformer. The transformer comprises the vacuum drying equipment, the vacuum drying equipment of the transformer has the technical effects described for the steam-electricity hybrid heater, low-cost steam is used as a main heating energy source, the power consumption of the heater is greatly reduced, the drying cost of the transformer is reduced, the energy consumption is saved, the running cost of the transformer can be reduced, and the economic benefit is improved.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A hybrid steam-electric heater comprising:
the circulating pipeline is connected with the target heated device, and a heat exchange medium is arranged in the circulating pipeline;
the controller can output a first signal when the available steam quantity of the steam source is smaller than a preset value; when the available steam quantity of the steam source is larger than a preset value, the controller can output a second signal;
the electric heater is connected with the circulating pipeline and can respond to the first signal to heat the heat exchange medium;
and the brazing plate type heat exchanger is connected with the circulating pipeline and can respond to the second signal and heat the heat exchange medium according to the steam heat of the steam source.
2. A steam-electric hybrid heater according to claim 1, wherein the electric heater and the brazed plate heat exchanger are connected in series on the circulation line.
3. The steam-electric hybrid heater according to claim 1, wherein the heat exchange medium is heat transfer oil.
4. A hybrid steam-electric heater according to claim 1, further comprising:
and the regulating valve is arranged on the air inlet pipeline of the brazing plate type heat exchanger and used for regulating the steam flow.
5. A hybrid steam-electric heater according to claim 1, further comprising:
and the circulating pump is arranged on the circulating pipeline and used for driving the heat exchange medium to flow in the circulating pipeline.
6. A hybrid steam-electric heater according to claim 1, further comprising:
and the flow detector is arranged on the circulating pipeline and used for acquiring the flow of the heat exchange medium in the circulating pipeline.
7. A hybrid steam-electric heater according to claim 1, further comprising:
and the temperature measurer is arranged on the circulating pipeline and used for obtaining the temperature of the heat exchange medium.
8. A hybrid steam-electric heater according to claim 1, further comprising:
the expansion tank is arranged on the circulating pipeline, and the cavity of the expansion tank is communicated with the circulating pipeline.
9. A vacuum drying apparatus comprising the steam-electric hybrid heater of any one of claims 1 to 8.
10. A transformer, characterized by comprising the vacuum drying apparatus of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920502770.4U CN209857522U (en) | 2019-04-12 | 2019-04-12 | Steam-electric hybrid heater, vacuum drying equipment and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920502770.4U CN209857522U (en) | 2019-04-12 | 2019-04-12 | Steam-electric hybrid heater, vacuum drying equipment and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209857522U true CN209857522U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920502770.4U Active CN209857522U (en) | 2019-04-12 | 2019-04-12 | Steam-electric hybrid heater, vacuum drying equipment and transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209857522U (en) |
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2019
- 2019-04-12 CN CN201920502770.4U patent/CN209857522U/en active Active
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