Implementation method for voltage regulation function of high-voltage split coil of dry-type hydrogen production transformer

Abstract

The invention provides a method for realizing a voltage regulating function of a high-voltage split coil of a dry-type hydrogen production transformer, which relates to the technical field of hydrogen production transformers and comprises the following steps of: dividing a high-voltage coil in the dry-type hydrogen production transformer into two coils which are symmetrically arranged up and down and are named as a coil I and a coil II respectively; the size of the boss of the high-voltage coil is enlarged, so that the boss of the high-voltage coil is in contact with the coil I and the coil II at the same time, then the upper and lower tapping heads of the coil I and the coil II are connected in parallel in the boss of the high-voltage coil, and finally the coil leading-out heads are led out after parallel connection and are connected with an on-load switch; the mode of enlarging the size of the boss of the high-voltage coil is adopted, the coverage of the boss is wide, then the upper and lower tapping-out heads of the coil I and the coil II are led out after being connected in parallel in the boss of the high-voltage coil, and therefore the coil outlet heads are poured more easily, the number of the coil outlet heads and the number of the load switch outlet heads are greatly reduced, and the cost is reduced. Therefore, each head outlet distance can better meet the insulation requirement.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production transformers, and in particular to a method for realizing a voltage regulation function of a high-voltage split coil of a dry-type hydrogen production transformer. Background Art

[0002] The hydrogen production transformer is a power conversion device specially used in the process of hydrogen production by water electrolysis. It converts AC power into DC power to meet the voltage and current conditions required by the electrolyzer. The design of the hydrogen production transformer needs to take into account the special requirements of hydrogen production by water electrolysis, such as the characteristics of high voltage and low current, and the ability to operate stably for a long time in harsh environments.

[0003] In a dry-type hydrogen production transformer, the high-voltage coil is axially split into two coils, and both coils need to be tapped. The two groups of taps are respectively connected to the on-load switch to achieve voltage regulation at different gears of the on-load switch. However, it is found in actual applications that due to the limited height of the high-voltage coil, when there are many voltage gears to be adjusted, when both axial coils are tapped, the number of taps is large and the electrical insulation distance between all taps cannot be guaranteed. Therefore, the present invention proposes a method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to propose a method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer, which has the advantages of reasonably arranging the tapping heads and meeting the insulation requirements, and can solve the problems existing in the prior art.

[0005] To achieve the purpose of the present invention, the present invention is implemented by the following technical scheme: a method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer, comprising the following steps:

[0006] Step 1: Prepare a dry-type hydrogen production transformer, and divide the high-voltage coil in the dry-type hydrogen production transformer into two coils placed symmetrically up and down, named Coil I and Coil II respectively;

[0007] Step 2: Install a high-voltage coil boss on the outside of the high-voltage coil of the dry-type hydrogen production transformer, and expand the volume of the high-voltage coil boss so that it contacts with coil I and coil II at the same time;

[0008] Step 3: Connect the upper and lower tapping terminals of coils I and II in parallel in the high-voltage coil boss;

[0009] Step 4: After parallel connection, lead out the coil lead-out head and connect it to the on-load switch. By adjusting the on-load switch, the voltage regulation function of the high-voltage split coil is realized.

[0010] A further improvement is that in step 2, a plurality of groups of high-voltage coils are provided in the dry-type hydrogen production transformer, and high-voltage coil bosses are installed on the plurality of groups of high-voltage coils.

[0011] A further improvement is that in step 4, a protective rubber layer is installed on the outer side of the connection portion between the coil lead-out head and the high-voltage coil boss.

[0012] A further improvement is that in the step one, the dry-type hydrogen production transformer includes a base, on which a load switch and a dry-type hydrogen production transformer body are installed, high-voltage coils are distributed on the dry-type hydrogen production transformer body, and the high-voltage coils are provided in several groups, and a high-voltage coil boss is provided on the outer side of the high-voltage coil, and is electrically connected to the load switch through the high-voltage coil boss.

[0013] A further improvement is that a protrusion is provided on the high voltage coil boss.

[0014] A further improvement is that the material of the high-voltage coil boss is copper or aluminum.

[0015] A further improvement is that the height of the protrusion is lower than the height of the high-voltage coil boss.

[0016] A further improvement is that the protective rubber layer is made of silicone rubber.

[0017] The beneficial effects of the present invention are as follows: a method for realizing the voltage regulating function of the high-voltage split coil of a dry-type hydrogen production transformer provided by the present invention adopts a method of enlarging the volume of the high-voltage coil boss to make its coverage wider and contact the coil I and the coil II at the same time, and then the upper and lower branching terminals of the coil I and the coil II are connected in parallel in the high-voltage coil boss and then led out, thereby making the cast coil terminals simpler, and the number of coil lead-out terminals and on-load switch lead-out terminals is greatly reduced, so that the distance between each terminal can better meet the insulation requirements, and the on-load switch structure is also simple and clear, the required on-load switch has smaller external dimensions and lower cost, and in addition, by adopting the method of connecting the upper and lower sections of the coil, first connecting in parallel and then leading out, the overall height of the high-voltage coil can be reduced, the external wiring is simpler, and at the same time, the product performance can be guaranteed to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the connection method of the high-voltage coil of the dry-type hydrogen production transformer provided by the present invention.

[0019] Figure 2 The present invention is a schematic diagram of the connection method of the high-voltage coil of the dry-type hydrogen production transformer in the prior art.

[0020] Figure 3 It is a schematic diagram comparing the number of high-voltage coil lead-out terminals provided by the present invention with the prior art.

[0021] Figure 4 It is a schematic diagram of the internal parallel circuit of the high-voltage coil provided by the present invention.

[0022] Figure 5 It is a top view schematic diagram of the high voltage coil provided by the present invention.

[0023] Figure 6 It is a schematic diagram of the top view of the structure of the dry-type hydrogen production transformer provided by the present invention. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0025] according to Figure 1-Figure 6 As shown, this embodiment proposes a method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer, such as Figure 2 As shown in the figure, the conventional coil connection method of the dry-type hydrogen production transformer in the prior art, the high-voltage coil of the dry-type hydrogen production transformer is divided into two coils placed symmetrically up and down, respectively named coil I and coil II. Figure 2 As shown in the figure, it can be found that there are many lead-out terminals and wiring connections. Therefore, when there are many voltage levels to be adjusted, when both axial coils are tapped, the electrical insulation distance between all the lead-out terminals cannot be guaranteed. Figure 1 As shown in the figure, the connection method of the high-voltage coil of the dry-type hydrogen production transformer designed in this embodiment includes the following steps:

[0026] Step 1: Prepare a dry-type hydrogen production transformer, and divide the high-voltage coil of the dry-type hydrogen production transformer into two coils placed symmetrically above and below, named Coil I and Coil II respectively. This step is the basic step;

[0027] Step 2: Install a high-voltage coil boss on the outside of the high-voltage coil of the dry-type hydrogen production transformer, and expand the volume of the high-voltage coil boss so that it contacts the coil I and the coil II at the same time. In this step, the volume of the high-voltage coil boss is enlarged so that it covers part of the coil I and the coil II. On the one hand, the larger high-voltage coil boss can increase the surface area of ​​the coil to a certain extent, thereby improving the heat dissipation performance. On the other hand, the tapping head can be reasonably arranged without increasing the coil height to meet the insulation requirements. The dry-type hydrogen production transformer is provided with a plurality of groups of high-voltage coils, and the plurality of groups of high-voltage coils are all provided with high-voltage coil bosses. In this embodiment, three groups of high-voltage coils are provided;

[0028] Step 3: Connect the upper and lower taps of coils I and II in parallel in the high-voltage coil boss. The parallel connection circuit diagram is as follows: Figure 4 As shown;

[0029] Step 4: After parallel connection, lead out the coil lead-out head and connect it to the on-load switch. Through the adjustment of the on-load switch, the voltage regulation function of the high-voltage split coil is realized. A protective rubber layer is installed on the outside of the connection part between the coil lead-out head and the high-voltage coil boss, and the protective rubber layer is made of silicone rubber.

[0030] Therefore, in Figure 1 and Figure 2 In contrast, combined with Figure 3 It can be found that the parallel connection method of the high-voltage split coil of the dry-type hydrogen production transformer provided in this embodiment can reduce the number of coil lead-out heads, and the number of corresponding on-load switch wiring leads is also reduced accordingly. When the number is reduced, the distance between each lead can better meet the insulation requirements, the on-load switch structure is also simple, and the required on-load switch has a smaller outer size and lower cost. Therefore, the present invention adopts the method of tapping the upper and lower sections of the coil, first connecting in parallel and then leading out, so that the overall height of the high-voltage coil can be reduced, the external wiring is simpler, and at the same time, the cost can be reduced in terms of product performance.

[0031] according to Figure 1 , Figure 5 and Figure 6 As shown, the dry-type hydrogen production transformer includes a base, on which a load switch and a dry-type hydrogen production transformer body are installed. A high-voltage coil is distributed on the dry-type hydrogen production transformer body, and the high-voltage coil is provided with several groups. A high-voltage coil boss is provided on the outer side of the high-voltage coil, and is electrically connected to the load switch through the high-voltage coil boss. The high-voltage coil is divided into coil I and coil II, and coil I and coil II are connected in parallel. A protrusion is provided on the high-voltage coil boss, and the height of the protrusion is lower than the height of the high-voltage coil boss. The setting of the protrusion allows a certain distance to exist between the high-voltage coil bosses connected on both sides to meet the insulation requirements. The material of the high-voltage coil boss is one of copper or aluminum. In this embodiment, copper metal is used as the material of the high-voltage coil boss, which has good electrical conductivity and thermal conductivity.

[0032] In this embodiment, the parts involved in the dry-type hydrogen production transformer body generally include structures such as an iron core, a winding, a casing, and an insulating material. However, this embodiment mainly involves the coil part (i.e., the winding part) of the dry-type hydrogen production transformer body, and other structures do not affect the structure of the high-voltage coil. The present invention relates to the connection method between the high-voltage coil and the on-load switch, so other specific structures are not described in detail.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the framework and scope of application of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer, characterized in that: The following steps are involved: Step 1: Prepare a dry-type hydrogen production transformer, and divide the high-voltage coil in the dry-type hydrogen production transformer into two coils placed symmetrically up and down, named Coil I and Coil II respectively; Step 2: Install a high-voltage coil boss on the outside of the high-voltage coil of the dry-type hydrogen production transformer, and expand the volume of the high-voltage coil boss so that it contacts with coil I and coil II at the same time; Step 3: Connect the upper and lower tapping terminals of coils I and II in parallel in the high-voltage coil boss; Step 4: After parallel connection, lead out the coil lead-out head and connect it to the on-load switch. By adjusting the on-load switch, the voltage regulation function of the high-voltage split coil is realized.

2. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 1 is characterized in that: In the step 2, a plurality of groups of high-voltage coils are provided in the dry-type hydrogen production transformer, and high-voltage coil bosses are installed on the plurality of groups of high-voltage coils.

3. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 1 is characterized in that: In the step 4, a protective rubber layer is installed on the outer side of the connection portion between the coil lead-out terminal and the high-voltage coil boss.

4. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 1 is characterized in that: In the step 1, the dry-type hydrogen production transformer includes a base, on which a load switch and a dry-type hydrogen production transformer body are installed. A high-voltage coil is distributed on the dry-type hydrogen production transformer body, and the high-voltage coil is provided in several groups. A high-voltage coil boss is provided on the outer side of the high-voltage coil, and is electrically connected to the load switch through the high-voltage coil boss.

5. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 1 is characterized in that: A protrusion is provided on the high-voltage coil boss.

6. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 1 is characterized in that: The high-voltage coil boss is made of copper or aluminum.

7. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 1 is characterized in that: The height of the protrusion is lower than the height of the high-voltage coil boss.

8. The method for realizing the voltage regulation function of the high-voltage split coil of a dry-type hydrogen production transformer according to claim 3 is characterized in that: The protective rubber layer is made of silicone rubber.

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