Pouring type mutual inductor height adjusting device
By introducing height adjustment devices of support columns, telescopic columns and screws into the cast transformer mold, the problem of height fixation of the mold cavity is solved, and the production of products is adjusted according to the altitude is realized, which reduces production costs and increases the equipment. applicability.
Patent Information
- Application Number
- CN202420733607.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-10
AI Technical Summary
The cavity of the existing cast transformer mold is highly fixed and cannot be adjusted according to the changes in air density in different altitudes, which leads to inconvenient installation and use of the equipment in different regions and increases production costs.
Design a height adjustment device including support columns, telescopic columns and screws. Through the mating of threaded through holes and nuts, the telescopic columns can adjust the height according to needs, and install sealing rings in the mold to prevent material leakage and achieve the height of the mold cavity. Flexible adjustments.
The production of transformer products is adjusted according to actual altitude, reducing production costs, and ensuring product applicability and installation convenience.
Smart Images
Figure CN222145982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a casting type mutual inductor height adjustment device, belonging to the technical field of mutual inductors. Background Art
[0002] Instrument transformers, also known as instrument transformers, are a general term for current transformers and voltage transformers. They are primary equipment that connects primary and secondary electrical systems. Instrument transformers convert high voltage and high current of the primary system into low voltage and low current for use by measuring instruments, relay protection and automatic devices of the secondary system. They are both the communication element between the primary and secondary systems in the power system and the isolation element.
[0003] Epoxy resin cast transformers are made of epoxy resin as an electrical insulation material. The liquid mixed glue formed by mixing epoxy resin, curing agent and silica powder filler is injected into the mold cavity with the help of vacuum casting equipment, and then formed after heating and curing. The molds of cast transformers are all made of metal materials. Once the mold is formed, it is difficult to change the product form. However, due to the different air densities at different altitudes in the equipment operation area, the dry arc and creepage distances of electrical equipment operating in different altitudes are different.
[0004] The solution to this problem in the industry is to design according to the higher altitude requirements at the beginning of the design. For example, according to the "Q / GDW13001-2014 High Altitude External Insulation Configuration Technical Specification", the mold is designed according to the dry arc and creepage distance requirements of 2000m, 2500m, and 3000m. The products designed in this way are used in areas with an altitude of less than 1000m. The product height is high, which is not conducive to the placement and installation of the equipment. Another product design method is to design and open molds for the shapes suitable for different altitudes. This method will increase the investment in mold equipment and increase costs. Utility Model Content
[0005] The utility model aims to solve the technical problem in the prior art that the inner cavity height of a transformer casting mold cannot be adjusted, and provides a casting transformer height adjustment device.
[0006] The utility model is realized by the following technical solutions:
[0007] That is, a cast-type transformer height adjustment device, including a support column and a telescopic column sleeved together, a base is integrally provided at the bottom of the support column, a threaded through hole is provided through the support column, the telescopic column and the base, a screw is installed in the threaded through hole, the screw extends from the top of the telescopic column, and a nut is sleeved on the upper part of the screw.
[0008] The telescopic column can be extended and retracted up and down according to the adjustment of the product height to achieve the height requirement matching the actual altitude. The screw and nut are used together to fix the utility model, and the adjusted utility model is placed in the mold cavity, and poured with the product production. After molding, the device is removed to obtain the cast transformer product of the required height. The utility model can be used to adjust the height of the mold cavity, and a transformer casting mold can cast transformers of different heights, which greatly reduces the cost.
[0009] Further preferably, an annular groove is provided on the outer circumferential surface of the base, and a sealing ring is provided in the annular groove. The sealing ring plays a sealing role to prevent leakage of liquid epoxy resin after being poured into the mold.
[0010] More preferably, the sealing ring is made of rubber.
[0011] Further preferably, the support column and the telescopic column are connected by threads, an internal thread hole is provided in the support column, and an external thread is provided on the telescopic column. The installation height of the telescopic column is adjusted by the thread, which has a simple structure and is easy to adjust.
[0012] Further preferably, the cross-sectional shape of the step-expanded hole is a regular polygon, and the cross-sectional shape of the limiting protrusion is the same as that of the step-expanded hole. The limiting protrusion is located in the step-expanded hole and has a reliable limiting effect.
[0013] Preferably, a top screw is installed on the upper part of the support column, and the top screw passes through the support column and contacts the telescopic column. The top screw is used to tighten the telescopic column to avoid shaking of the telescopic column during installation and pouring.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] The telescopic column can be extended and retracted up and down according to the adjustment of the product height to achieve the height requirement matching the actual altitude. The screw and nut are used together to fix the utility model, and the adjusted utility model is placed in the mold cavity, and poured with the product production. After molding, the device is removed to obtain the cast transformer product of the required height. The utility model can be used to adjust the height of the mold cavity, and a transformer casting mold can cast transformers of different heights, which greatly reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.
[0018] Figure 2 It is a schematic diagram of the structure of the screw and the nut in a specific implementation manner of the utility model.
[0019] Figure 3 It is a schematic diagram of the structure of the utility model in use state.
[0020] In the figure; 1. support column; 2. base; 3. annular groove; 4. sealing ring; 5. telescopic column; 6. threaded through hole; 7. screw; 8. nut; 9. top screw; 10. mold body; 11. mold cavity; 12. stepped expansion hole; 13. limiting protrusion. DETAILED DESCRIPTION
[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.
[0022] like Figures 1 to 3 The cast-type transformer height adjustment device shown in the figure comprises a support column 1 and a telescopic column 5 which are sleeved together. A base 2 is integrally provided at the bottom end of the support column 1. A threaded through hole 6 is formed through the support column 1, the telescopic column 5 and the base 2. A screw rod 7 is installed in the threaded through hole 6. The screw rod 7 extends from the top end of the telescopic column 5. A nut 8 is sleeved on the upper part of the screw rod 7.
[0023] The telescopic column 5 can be extended and retracted up and down according to the adjustment of the product height to achieve the height requirement matching the actual altitude. The screw rod 7 and the nut 8 are used together to fix the utility model, and the adjusted utility model is placed in the mold cavity 11, and poured with the product production. After molding, the device is removed to obtain a cast transformer product of the required height. The utility model can be used to adjust the height of the mold cavity 11, and a transformer casting mold can cast transformers of different heights, which greatly reduces the cost.
[0024] The outer circumferential surface of the base 2 is provided with an annular groove 3, and a sealing ring 4 made of rubber is provided in the annular groove 3. The sealing ring 4 plays a sealing role to prevent leakage of liquid epoxy resin after being poured into the mold.
[0025] The support column 1 and the telescopic column 5 are connected by threads, an internal thread hole is provided in the support column 1, and an external thread is provided on the telescopic column 5. The installation height of the telescopic column 5 is adjusted by the thread, and the structure is simple and the adjustment is convenient.
[0026] The cross-sectional shape of the step-expanded hole 12 is a regular polygon, and the cross-sectional shape of the limiting protrusion 13 is the same as that of the step-expanded hole 12. The limiting protrusion 13 is located in the step-expanded hole 12 and has a reliable limiting effect.
[0027] Among them, a top screw 9 is installed on the upper part of the support column 1, and the top screw 9 passes through the support column 1 and contacts the telescopic column 5. The top screw 9 is used to tighten the telescopic column 5 to avoid shaking of the telescopic column 5 during installation and pouring.
[0028] Working principle:
[0029] The telescopic column 5 can be extended and retracted up and down according to the adjustment of the product height to achieve the height requirement matching the actual altitude. The screw rod 7 and the nut 8 are used together to fix the utility model, and the adjusted utility model is placed in the mold cavity 11 of the mold body 10, and poured with the product production. After molding, the device is removed to obtain a cast transformer product of the required height. The utility model can be used to adjust the height of the mold cavity 11, and a transformer casting mold can cast transformers of different heights, which greatly reduces the cost.
[0030] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.
[0031] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A cast type transformer height adjustment device, characterized in that: The invention comprises a support column (1) and a telescopic column (5) which are sleeved together. The bottom end of the support column (1) is integrally provided with a base (2). A threaded through hole (6) is provided through the support column (1), the telescopic column (5) and the base (2). A screw rod (7) is installed in the threaded through hole (6). The screw rod (7) extends from the top end of the telescopic column (5). A nut (8) is sleeved on the upper part of the screw rod (7).
2. A cast type transformer height adjustment device according to claim 1, characterized in that: An annular groove (3) is provided on the outer circumferential surface of the base (2), and a sealing ring (4) is provided in the annular groove (3).
3. A cast type transformer height adjustment device according to claim 2, characterized in that: The material of the sealing ring (4) is rubber.
4. A cast type transformer height adjustment device according to claim 1, characterized in that: The support column (1) and the telescopic column (5) are connected via threads; an internal thread hole is provided in the support column (1), and an external thread is provided on the telescopic column (5).
5. The height adjustment device for a cast type mutual inductor according to claim 1, characterized in that: The cross-sectional shape of the stepped expansion hole (12) is a regular polygon, and the cross-sectional shape of the limiting protrusion (13) is the same as that of the stepped expansion hole (12).
6. A cast type transformer height adjustment device according to claim 1, characterized in that: A top screw (9) is installed on the upper part of the support column (1), and the top screw (9) passes through the support column (1) and contacts the telescopic column (5).