A new type of vapor phase drying evaporator
By designing a new vapor-phase drying evaporator including vacuum tanks, heat exchangers and in-tank jet nozzles, the existing equipment has solved the problems of large energy consumption and long production cycles, and the efficient drying process and reduced maintenance difficulty are achieved.
Patent Information
- Application Number
- CN202421440255.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The existing gas-phase drying equipment consumes a large energy and has a long production cycle. The existing evaporators have problems such as limited evaporation, aging of solvents, large land occupation, and inconvenient maintenance.
A new type of vapor-phase drying evaporator is designed, including a vacuum tank, a heat exchanger, a solvent buffer tank and multiple tank jet nozzles. Through the cooperation of high-pressure and high-flow solvent pumps and pneumatic valves, efficient heating and recycling of solvents are achieved.
The design reduces energy consumption, shortens production cycles, reduces maintenance difficulty, and improves evaporation efficiency, solving the shortcomings of existing equipment.
Smart Images
Figure CN222703688U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vapor phase drying systems, in particular to a novel vapor phase drying evaporator. Background Art
[0002] At present, transformers with voltages exceeding 110kV need to be dried using gas phase drying equipment, which is one of the indispensable process equipment in the production of large transformers. However, the existing gas phase drying equipment on the market has high energy consumption and a long production cycle, which is a bottleneck in the production of transformers. There are two modes of evaporators commonly used on the market, one is an external static evaporator and the other is a built-in waterfall evaporator; the external static evaporator has no forced heat exchange and is severely affected by the evaporation surface area, so the evaporation amount is restricted. At the same time, since the heating pipe is placed in the solvent, it is easy to cause solvent aging, and it occupies a large area and is inconvenient to maintain; after the built-in waterfall evaporator has been used for a period of time, due to the uneven distribution of the internal solvent, the heating power is reduced and the heating speed is slow. In addition, it is easy to leak the pipeline, and due to its large size, it is inconvenient to maintain. Utility Model Content
[0003] In view of the deficiencies of the prior art, the utility model provides a novel vapor phase drying evaporator, which solves the problems of high energy consumption and long production cycle of the prior evaporator.
[0004] To achieve the above objectives, the utility model is implemented through the following technical scheme. The utility model provides a novel vapor phase drying evaporator, including a vacuum tank, wherein the liquid inlet and liquid outlet ends of the vacuum tank are respectively connected to a heat exchanger and a solvent buffer tank, the liquid inlet end of the solvent buffer tank is connected to a solvent pump, the liquid outlet end of the solvent pump is installed with a three-way pipe, the two ends of the three-way pipe are respectively connected to a first filter and a second filter, a second three-way pipe is installed on the liquid outlet ends of the first filter and the second filter, the second three-way pipe is connected to the liquid inlet end of the heat exchanger, and valves are provided on the outlet ends of the first filter and the second filter.
[0005] Preferably, a first pneumatic valve, a second pneumatic valve and a pneumatic main valve are installed on the three-way pipe.
[0006] Preferably, a third pneumatic valve and a fourth pneumatic valve are provided between the vacuum tank and the solvent buffer tank.
[0007] Preferably, a fifth pneumatic valve is provided between the vacuum tank and the heat exchanger.
[0008] Preferably, an in-tank jet nozzle is installed in the vacuum tank.
[0009] Beneficial Effects
[0010] The utility model provides a novel vapor phase drying evaporator, which has the following beneficial effects:
[0011] 1. The transformer to be dried is placed in a vacuum tank. After pre-evacuation to 700Pa, it enters the transformer heating process. During the heating process, the solvent is used as the heat transfer medium. The solvent is stored in the solvent buffer tank and is pumped into the high-efficiency heat exchanger through a high-pressure and high-flow solvent pump, through the main valve 8, and then through the filter 6 or 7. The solvent is heated in the high-efficiency heat exchanger to form a high temperature, and the pressure is increased again. Then, it enters the vacuum tank through the fifth pneumatic valve. A plurality of tank jet nozzles are installed on the top of the side wall of the vacuum tank. The solvent is rapidly vaporized after passing through this device. When the high-temperature solvent gas encounters a cold transformer, it is rapidly liquefied and the temperature is transferred to the transformer. The liquefied liquid flows back to the buffer tank through the third pneumatic valve and the fourth pneumatic valve for repeated use. In this process, the selection of a high-pressure and high-flow solvent pump means that the solvent jet velocity and solvent vaporization volume in the vacuum tank are maximized. The use of a heat exchanger for solvent heating means that the solvent is completely heated and the temperature is sufficient to meet process requirements. The jet nozzles are evenly arranged on the top of the tank side and a Venturi guide plate is installed, which makes the steam in the tank more evenly distributed, meaning the temperature is more uniform. The design of the entire system facilitates repair and maintenance, reduces floor space, consumes less energy, and the jet nozzles in the tank are maintenance-free. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] In the figure: 1. vacuum tank; 2. third pneumatic valve; 3. fourth pneumatic valve; 4. solvent buffer tank; 5. solvent pump; 6. first filter; 7. second filter; 8. pneumatic main valve; 9. first pneumatic valve; 10. second pneumatic valve; 11. heat exchanger; 12. fifth pneumatic valve; 13. jet nozzle in the tank. DETAILED DESCRIPTION
[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] See also Figure 1The utility model provides a technical solution: a novel vapor phase drying evaporator, comprising a vacuum tank 1, wherein the liquid inlet end and the liquid outlet end of the vacuum tank 1 are respectively connected to a heat exchanger 11 and a solvent buffer tank 4, the liquid inlet end of the solvent buffer tank 4 is connected to a solvent pump 5, the liquid outlet end of the solvent pump 5 is installed with a three-way pipe, the two ends of the three-way pipe are respectively connected to a first filter 6 and a second filter 7, the liquid outlet ends of the first filter 6 and the second filter 7 are installed with a second three-way pipe, the second three-way pipe is connected to the liquid inlet end of the heat exchanger 11, and valves are arranged on the outlet ends of the first filter 6 and the second filter 7; the use method of the vacuum tank 1 belongs to the existing mature technology, and it needs to be pre-evacuated to 700Pa when used, and the vacuuming method belongs to the known technical common sense, so there is no need to describe the principle and process of vacuuming in detail;
[0016] The principle of this method is to fully exchange heat of the solvent outside the vacuum tank 1, and then transport it into the vacuum tank 1 by the solvent pump 5. Under the vacuum state, the solvent transported in at high temperature and high pressure is quickly vaporized to form a steam state, which fills the entire vacuum tank space and meets the cold transformer body, liquefies and releases heat, and heats the transformer.
[0017] Furthermore, a first pneumatic valve 9 , a second pneumatic valve 10 and a pneumatic main valve 8 are installed on the three-way pipe.
[0018] Furthermore, a third pneumatic valve 2 and a fourth pneumatic valve 3 are provided between the vacuum tank 1 and the solvent buffer tank 4 .
[0019] Furthermore, a fifth pneumatic valve 12 is provided between the vacuum tank 1 and the heat exchanger 11 .
[0020] Furthermore, an in-tank jet nozzle 13 is installed in the vacuum tank 1 , and the in-tank jet nozzle 13 is to be connected to the outlet of the pipeline from the heat exchanger 11 , so that the solvent vapor can return to the vacuum tank 1 .
[0021] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.
[0022] Embodiment: When in use, the transformer to be dried is placed in the vacuum tank 1, and after pre-evacuation to 700Pa, it enters the transformer heating process. During the heating process, the solvent is used as the heat transfer medium. The solvent is stored in the solvent buffer tank 4, and is pumped into the heat exchanger 11 through the high-pressure and large-flow solvent pump 5, the pneumatic main valve, and the first filter 6 or the second filter 7. The solvent is heated in the heat exchanger 11 to form a high temperature, and the pressure is increased again, and then enters the vacuum tank 1 through the fifth pneumatic valve 12. A plurality of tank jet nozzles 13 are installed on the top of the side wall of the vacuum tank 1. The solvent is rapidly vaporized after passing through this device. When the high-temperature solvent gas encounters a cold transformer, it is rapidly liquefied and the temperature is transferred to the transformer. The liquefied liquid flows back to the buffer tank 4 through the third pneumatic valve 2 and the fourth pneumatic valve 3, and is used repeatedly. This is the circulation process of the solvent.
[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A novel vapor phase drying evaporator, comprising a vacuum tank (1), characterized in that: The liquid inlet and liquid outlet ends of the vacuum tank (1) are respectively connected to a heat exchanger (11) and a solvent buffer tank (4); the liquid inlet end of the solvent buffer tank (4) is connected to a solvent pump (5); the liquid outlet end of the solvent pump (5) is provided with a three-way pipe; the two ends of the three-way pipe are respectively connected to a first filter (6) and a second filter (7); the liquid outlet ends of the first filter (6) and the second filter (7) are provided with a second three-way pipe; the second three-way pipe is connected to the liquid inlet end of the heat exchanger (11); valves are provided on the outlet ends of the first filter (6) and the second filter (7).
2. A novel vapor phase drying evaporator according to claim 1, characterized in that: The three-way pipe is equipped with a first pneumatic valve (9), a second pneumatic valve (10) and a pneumatic main valve (8).
3. A novel vapor phase drying evaporator according to claim 1, characterized in that: A third pneumatic valve (2) and a fourth pneumatic valve (3) are provided between the vacuum tank (1) and the solvent buffer tank (4).
4. A novel vapor phase drying evaporator according to claim 1, characterized in that: A fifth pneumatic valve (12) is provided between the vacuum tank (1) and the heat exchanger (11).
5. A novel vapor phase drying evaporator according to claim 1, characterized in that: An in-tank jet nozzle (13) is installed in the vacuum tank (1).