A core mold structure with automatic heating

Abstract

The present invention discloses a core mold structure with automatic heating, including a core mold body, an electric heating device, quartz sand and an insulation sleeve, wherein the core mold body has a cavity inside, the quartz sand and the electric heating device are arranged in the cavity, the insulation sleeve is arranged on the core mold body, a protective tube is arranged in the cavity, the electric heating device is arranged in the protective tube, a heat sink is arranged on the outer wall of the protective tube, an annular channel is arranged in the heat sink, water is arranged in the annular channel, the plane where the annular channel is located passes through the axis of the core mold body, and control valves are arranged at both ends of the annular channel, so that the annular channel is divided into a part close to the outer side of the core mold body and a part close to the protective tube. Compared with the prior art, the present invention can realize automatic heating, so that the setting of a heating chamber is not required, thereby effectively reducing production costs.

Description

Technical Field

[0001] The invention relates to the field of insulator bushing manufacturing equipment, in particular to a core mold structure with automatic heating. Background Art

[0002] Composite hollow insulators are widely used in the field of high-voltage power transmission and transformation, such as in circuit breakers, transformers, and switchgear. This type of insulator generally includes an insulating sleeve made of glass fiber impregnated with epoxy resin and a silicone rubber umbrella skirt arranged on the outside of the insulating sleeve, wherein, during the production process of the insulating sleeve, the glass fiber impregnated with epoxy resin is wound on the core mold to finally form the insulating sleeve, and the core mold needs to be heated when in use. In the prior art, the core mold is usually placed in a heating chamber for heating. This method requires the construction of a large-volume heating chamber for heating the core mold, resulting in high production costs. In view of this, the inventor of the present application, after in-depth research, obtained a core mold structure with automatic heating. Summary of the invention

[0003] The object of the present invention is to provide a core mold structure with automatic heating, which can realize automatic heating, thereby eliminating the need for a heating chamber and effectively reducing production costs.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A core mold structure with automatic heating, comprising a core mold body, an electric heating device, quartz sand and an insulation sleeve, the core mold body having a cavity inside, the quartz sand and the electric heating device being arranged in the cavity, the insulation sleeve being arranged on the core mold body, a protective tube being arranged in the cavity, the electric heating device being arranged in the protective tube, a heat sink being arranged on the outer wall of the protective tube, an annular channel being arranged in the heat sink, water being arranged in the annular channel, a plane where the annular channel is located passing through the axis of the core mold body, control valves being arranged at both ends of the annular channel, so that the annular channel is divided into a part close to the outer side of the core mold body and a part close to the protective tube.

[0006] In a preferred embodiment, the thermal insulation sleeve comprises a middle section and two side sections, the middle section is arranged between the two side sections, and the middle section and the side sections are connected by Velcro.

[0007] In a preferred embodiment, an elastic tightening opening is provided at one end of the side segment away from the middle segment.

[0008] In a preferred embodiment, the middle section and the side section are provided with a zipper extending from one end to the other end thereof.

[0009] Compared with the prior art, the present invention provides an automatic heating core mold structure, which is provided with an electric heating device and quartz sand inside and an insulation sleeve outside. The electric heating device can realize self-heating, and the quartz sand has good thermal conductivity, which can quickly conduct heat to the surface of the core mold to achieve rapid heating, and the insulation sleeve can achieve good insulation effect. At the same time, there is a heat sink on the outer wall of the protective tube, and an annular channel is provided in the heat sink. The annular channel is divided into two parts, an outer part and an inner part, which are respectively a part close to the outer side of the core mold body and a part close to the protective tube. Such an arrangement can achieve better thermal energy utilization. When heating just begins, the core mold is rotated one circle. During the rotation process, when the heat sink rotates to a low position, the control valve is opened to allow the water in the annular channel to flow to the outer part thereof. When the heat sink leaves the low position, the control valve is closed. Therefore, after the core mold rotates one circle, all the water is transferred to the outer part of each radiator fin. At this time, the water is relatively In order to stay away from the protective tube, that is, relatively far away from the electric heating device, the electric heating device conducts a large amount of heat to the quartz sand, and the quartz sand quickly transfers the heat to the surface of the core mold, so that rapid heating can be achieved; when a certain temperature is reached, the core mold is rotated for one circle, and when the radiator plate rotates to a high position, the control valve is opened, and when the heat sink leaves the high position, the control valve is closed, so that all the water is close to the protective tube. At this time, the water absorbs the heat dissipated from the protective tube, and relies on the large specific heat capacity of water to achieve heat storage. After heating for a period of time, the electric heating device can be turned off, and the heat dissipated in the water can ensure that the core mold has a sufficient temperature duration. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention relates to a result schematic diagram of a core mold structure with automatic heating without a heat preservation sleeve.

[0011] Figure 2 The invention relates to a structural schematic diagram of a core mold structure with automatic heating and a heat preservation sleeve.

[0012] Figure 3 The present invention relates to an axial cross-sectional structural schematic diagram of a core mold body with an automatic heating core mold structure (excluding quartz sand).

[0013] Figure 4 The invention relates to a radial cross-sectional structural schematic diagram of a core mold body with an automatic heating core mold structure.

[0014] In the picture

[0015] The core mold body 1; the cavity 2; the electric heating device 3; the quartz sand 4; the middle section 6; the side section 7; the elastic tightening opening 8; the zipper 9; the protective tube 10; the heat dissipation plate 11; the annular channel 12; and the control valve 13. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0017] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0018] like Figures 1 to 4 As shown, a core mold structure with automatic heating includes a core mold body 1, an electric heating device 3, quartz sand 4 and an insulation sleeve, the core mold body 1 has a cavity 2 inside, the quartz sand 4 and the electric heating device 3 are arranged in the cavity 2, the insulation sleeve is arranged on the core mold body 1, a protective tube 10 is arranged in the cavity 2, the electric heating device 3 is arranged in the protective tube 10, a heat dissipation plate 11 is arranged on the outer wall of the protective tube 10, an annular channel 12 is arranged in the heat dissipation plate 11, water is arranged in the annular channel 12, the plane where the annular channel 12 is located passes through the axis of the core mold body 1, and control valves 13 are arranged at both ends of the annular channel 12, so that the annular channel 12 is divided into a part close to the outside of the core mold body 1 and a part close to the protective tube 10.

[0019] The present embodiment is an automatic heating core mold structure, which is provided with an electric heating device 3 and quartz sand 4 inside and an insulation sleeve outside. The electric heating device 3 can realize self-heating, and the quartz sand 4 has good thermal conductivity, which can quickly conduct heat to the surface of the core mold to achieve rapid heating, and the insulation sleeve can achieve good insulation effect. At the same time, there is a heat sink 11 on the outer wall of the protective tube 10, and an annular channel 12 is provided in the heat sink 11. The annular channel 12 is divided into two parts, the outside and the inside, which are respectively a part close to the outside of the core mold body 1 and a part close to the protective tube 10. Such a setting can achieve better thermal energy utilization. When heating just begins, the core mold is rotated one circle. During the rotation process, when the heat sink 11 rotates to a low position, the control valve 13 is opened to allow the water in the annular channel 12 to flow to the outside part. When the heat sink 11 leaves the low position, the control valve 13 is closed, so that after the core mold rotates one circle, all the water is transferred to the outside part of each radiator fin. When the water is relatively far away from the protective tube 10, that is, relatively far away from the electric heating device 3, the electric heating device 3 conducts a large amount of heat to the quartz sand, and the quartz sand 4 quickly transfers the heat to the surface of the core mold, thereby achieving rapid heating; when a certain temperature is reached, the core mold is rotated for one circle, and when the radiator plate rotates to a high position, the control valve 13 is opened, and when the heat sink 11 leaves the high position, the control valve 13 is closed, so that all the water is close to the protective tube 10. At this time, the water absorbs the heat dissipated from the protective tube 10, and relies on the large specific heat capacity of water to achieve heat storage. Therefore, after heating for a period of time, the electric heating device 3 can be turned off, and the heat dissipated in the water can ensure that the core mold has a sufficient temperature duration.

[0020] The electric heating device 3 can be configured as an electric heating tube.

[0021] Furthermore, the insulation cover includes a middle section 6 and two side sections 7, wherein the middle section 6 is arranged between the two side sections 7, and the middle section 6 and the side sections 7 are connected by Velcro. By providing the insulation cover in the form of multiple sections, on the one hand, it can be easily processed and produced, and on the other hand, it can be adapted to core molds of different specifications and sizes by splicing.

[0022] In order to enable the insulation sleeve to stably cover the core mold and avoid sliding on the core mold, an elastic tightening opening 8 is provided at one end of the side section 7 away from the middle section 6 .

[0023] In order to facilitate the covering, the middle section 6 and the side section 7 are provided with a zipper 9 extending from one end to the other end thereof. By installing the zipper 9, the thermal insulation cover can be conveniently installed and removed.

[0024] 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 the process, method, article or terminal 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 terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0025] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A core mold structure with automatic heating, characterized in that: It includes a core mold body, an electric heating device, quartz sand and an insulation sleeve, the core mold body has a cavity inside, the quartz sand and the electric heating device are arranged in the cavity, the insulation sleeve is arranged on the core mold body, a protective tube is arranged in the cavity, the electric heating device is arranged in the protective tube, a heat sink is arranged on the outer wall of the protective tube, an annular channel is arranged in the heat sink, water is arranged in the annular channel, the plane where the annular channel is located passes through the axis of the core mold body, and control valves are arranged at both ends of the annular channel, so that the annular channel is divided into a part close to the outside of the core mold body and a part close to the protective tube.

2. According to claim 1, a core mold structure with automatic heating is characterized in that: The heat-insulating sleeve comprises a middle section and two side sections, wherein the middle section is arranged between the two side sections, and the middle section and the side sections are connected by Velcro.

3. A core mold structure with automatic heating according to claim 2, characterized in that: An elastic tightening opening is provided at one end of the side section away from the middle section.

4. A core mold structure with automatic heating according to claim 3, characterized in that: The middle section and the side section are provided with zippers extending from one end to the other end.

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