A high temperature resistant insulating sheath

Abstract

The present invention discloses a high-temperature resistant insulating sheath, belonging to the technical field of switch insulating sheaths, comprising a sheath body, a mounting cavity provided in the sheath body, a terminal mounting opening connected to the mounting cavity at one end of the sheath body, a lead mounting opening connected to the mounting cavity at the other end of the sheath body, a cooling assembly provided in the sidewall of the sheath body, the cooling assembly comprising a liquid storage cavity, a first connecting channel, a liquid storage cavity, a second connecting channel, and a heat dissipation channel arranged in descending order, the heat dissipation channel being spirally arranged with the central axis of the terminal mounting opening as the axis, the bottom end of the heat dissipation channel being connected to the liquid outlet control assembly, the top end of the heat dissipation channel being connected to the bottom end of the liquid storage cavity via the second connecting channel, the liquid storage cavity being connected to the liquid storage cavity via the first connecting channel, and the top end of the liquid storage cavity being provided with a liquid inlet. The present invention adopts a high-temperature resistant insulating sheath of the above structure, which has a simple structure, good heat dissipation performance, and can prevent the temperature inside the insulating sheath from being too high.

Description

Technical Field

[0001] The invention belongs to the technical field of insulating sheaths, and in particular relates to a high-temperature resistant insulating sheath. Background Art

[0002] Insulating sheaths are essential insulating safety protection products for the wiring terminals of power equipment such as transformers, lightning arresters, and outdoor switches. This product can effectively prevent power outages caused by human contact, power theft, contact with small animals or debris, wet flashover, salt spray, and chemical gas corrosion on the exposed terminals of power equipment, thereby avoiding the huge economic losses caused by these accidents.

[0003] During actual use, heat is generated at the wiring joints of the power equipment. The insulating sheaths in the prior art are generally closed insulating sheaths or insulating sheaths that dissipate heat through heat dissipation holes. The heat dissipation performance is not high, which may cause high temperatures to be generated inside the insulating sheath, thereby affecting the use status and service life of the power equipment.

[0004] In order to solve the above problems, it is necessary to provide a new type of insulating sheath. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-temperature resistant insulating sheath with good heat dissipation performance, which can prevent the temperature inside the insulating sheath from being too high.

[0006] To achieve the above-mentioned objectives, the present invention provides a high-temperature resistant insulating sheath, comprising a sheath body, a mounting cavity being provided in the sheath body, a terminal mounting opening being connected to the mounting cavity at one end of the sheath body, a lead mounting opening being connected to the mounting cavity at the other end of the sheath body, a cooling component being provided in the side wall of the sheath body, the cooling component comprising a liquid storage cavity, a first connecting channel, a liquid storage cavity, a second connecting channel and a heat dissipation channel which are arranged in sequence from high to low, the heat dissipation channel being spirally arranged with the central axis of the terminal mounting opening as the axis, the bottom end of the heat dissipation channel being connected to the liquid outlet control component, the top end of the heat dissipation channel being connected to the bottom end of the liquid storage cavity through the second connecting channel, the top end of the liquid storage cavity being connected to the bottom end of the liquid storage cavity through the first connecting channel, and the top end of the liquid storage cavity being provided with a liquid inlet.

[0007] Preferably, the liquid outlet control component includes a liquid outlet hole arranged in a vertical direction, the top of the liquid outlet hole is connected to the bottom end of the heat dissipation channel, the middle of the liquid outlet hole is provided with an expansion groove, the diameter of the expansion groove is larger than the diameter of the liquid outlet hole, the bottom of the liquid outlet hole is fixedly connected to a leakage plate, the top surface of the leakage plate is fixedly connected to a guide cylinder, the guide cylinder is fixedly connected to the bottom end of a spring in a compressed state, the top end of the spring extends out of the guide cylinder and is fixedly connected to a blocking plate, the blocking plate is arranged opposite to the liquid outlet hole, and the top edge of the blocking plate is in contact with the top surface of the inner wall of the expansion groove.

[0008] Preferably, a filter screen is provided at the liquid inlet.

[0009] Preferably, one side of the sheath body is provided with an opening that passes through the sheath body along the length direction of the sheath body, the opening is connected to the installation cavity, the lead installation port and the terminal installation port, the opening is not connected to the cooling component, and a connecting component is provided at the opening.

[0010] Preferably, the connecting assembly includes a first connecting edge and a second connecting edge respectively fixedly connected to the two edges of the opening, the first connecting edge is provided with evenly distributed connecting parts, the connecting part includes a pressing part, a connecting rod and a tip fixedly connected in sequence, the diameter of the connecting rod is smaller than the diameter of the pressing part, and at least two symmetrically arranged arc-shaped ridges are provided on the curved outer wall of the connecting rod close to the tip, the diameter of the tip gradually decreases from one end close to the connecting rod to the end away from the connecting rod, the diameter of the end of the tip connected to the connecting rod is equal to the diameter of the connecting rod, and the second connecting edge is provided with connecting holes arranged in a one-to-one correspondence with the connecting parts, and the diameter of the connecting holes is equal to the diameter of the connecting rod.

[0011] Therefore, the present invention adopts a high-temperature resistant insulating sheath with the above structure, which has the following beneficial effects: simple structure, good heat dissipation, and the ability to prevent the temperature inside the insulating sheath from being too high.

[0012] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an embodiment of a high-temperature resistant insulating sheath of the present invention;

[0014] Figure 2 This is a cross-sectional view of an embodiment of a high-temperature resistant insulating sheath of the present invention;

[0015] Figure 3 This is a structural schematic diagram of an embodiment of a liquid discharge control component in a high-temperature resistant insulating sheath of the present invention;

[0016] Figure 4 The figure is a structural schematic diagram of an embodiment of a connector in a high-temperature resistant insulating sheath of the present invention.

[0017] In the figure: 1. Sheath body; 2. Mounting cavity; 3. Terminal mounting port; 4. Lead mounting port; 5. Cooling assembly; 51. Liquid storage chamber; 52. First connecting channel; 53. Liquid storage chamber; 54. Second connecting channel; 55. Heat dissipation channel; 56. Liquid inlet; 6. Liquid outlet control assembly; 61. Liquid outlet hole; 62. Diameter expansion groove; 63. Liquid leakage plate; 64. Guide cylinder; 65. Spring; 66. Blocking plate; 7. Connecting assembly; 71. First connecting edge; 72. Second connecting edge; 73. Connecting piece; 731. Pressing portion; 732. Connecting rod; 733. Tip; 734. Arc-shaped ridge. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0020] Reference Figure 1-4As shown, this embodiment provides a high-temperature resistant insulating sheath, including a sheath body 1. The material of the sheath body 1 can be a high-temperature resistant material, such as vulcanized silicone rubber. A mounting cavity 2 is provided in the sheath body 1, and the mounting cavity 2 is adapted to the structure of the device to be protected by the sheath. One end of the sheath body 1 is provided with a terminal mounting opening 3 connected to the mounting cavity 2, and the other end of the sheath body 1 is provided with a lead mounting opening 4 connected to the mounting cavity 2. A cooling component 5 is provided in the side wall of the sheath body 1, and the cooling component 5 includes a liquid storage chamber 51, a first connecting channel 52, a liquid storage chamber 53, a second connecting channel 54, and a heat dissipation channel 55, which are arranged in descending order. The liquid storage chamber 51, the first connecting channel 52, the liquid storage chamber 53, the second connecting channel 54, and the heat dissipation channel 55 are filled with liquid. The specific heat capacity of the filled liquid is greater than the specific heat capacity of the sheath body 1. This causes the temperature of the liquid to rise more slowly than the temperature of the sheath body 1 during normal use. This allows the temperature on the sheath body 1 to be transferred to the liquid through heat conduction, ultimately achieving cooling and heat dissipation of the sheath body 1. Both the liquid storage chamber 53 and the liquid storage chamber 51 have a certain liquid storage capacity, ensuring that the liquid volume is sufficient to absorb sufficient heat, thereby ensuring the heat dissipation capacity of the insulating sheath. The heat dissipation channel 55 is arranged in a spiral shape with the central axis of the terminal mounting opening 3 as the axis. The spiral arrangement can increase the degree of heat exchange between the liquid in the heat dissipation channel 55 and the terminal mounting opening 3. The bottom end of the heat dissipation channel 55 is connected to the liquid outlet control component 6, which is used to control the opening and closing of the bottom of the heat dissipation channel 55. The top of the heat dissipation channel 55 is connected to the bottom of the liquid storage chamber 53 via the second connecting channel 54. The top of the liquid storage chamber 53 is connected to the bottom of the liquid storage chamber 51 via the first connecting channel 52. The top of the liquid storage chamber 51 is provided with a liquid inlet 56 for filling the liquid storage chamber 51 with liquid.

[0021] During use, the liquid reservoir 51 is filled with a liquid having a specific heat capacity greater than that of the jacket body 1. The liquid can be either an insulating liquid or a non-insulating liquid, depending on the intended use of the insulating jacket. Synthetic ester oil can be used as the insulating liquid, while water can be used as the non-insulating liquid. After the liquid is filled, the first connecting channel 52, the liquid reservoir 53, the second connecting channel 54, and the heat dissipation channel 55 are filled with liquid. Because the specific heat capacity of the liquid is greater than that of the insulating jacket, when heat is generated at the terminal, causing the temperature of the terminal mounting opening 3 to rise, the liquid in the heat dissipation channel 55 rises more slowly than the temperature of the jacket body 1. That is, the liquid temperature is lower than that of the jacket body 1. The liquid absorbs the heat from the jacket body 1, thereby achieving heat dissipation for the entire insulating jacket.

[0022] In a further preferred embodiment, the liquid outlet control component 6 includes a liquid outlet 61 arranged in the vertical direction, and the top of the liquid outlet 61 is connected to the bottom end of the heat dissipation channel 55. In this embodiment, the liquid outlet 61 is located on the bottom end surface of the sheath body 1, and can actually also be arranged on the bottom side of the sheath body 1. An expansion groove 62 is provided in the middle of the liquid outlet 61, and the diameter of the expansion groove 62 is larger than the diameter of the liquid outlet 61. A liquid leakage plate 63 is fixedly connected to the bottom of the liquid outlet 61, and a guide cylinder 64 is fixedly connected to the top surface of the liquid leakage plate 63. The cross-sectional size of the guide cylinder 64 is smaller than the cross-sectional size of the liquid leakage plate 63, and the leakage holes are evenly distributed on the leakage plate 63, and the leakage holes are used to discharge liquid out of the liquid outlet 61. The guide tube 64 is fixedly connected to the bottom end of the spring 65 in a compressed state, and the top end of the spring 65 extends out of the guide tube 64 and is fixedly connected to the blocking plate 66. The blocking plate 66 is arranged opposite to the liquid outlet 61, and the top edge of the blocking plate 66 is in contact with the top surface of the inner wall of the expansion groove 62.

[0023] In outdoor applications, when encountering rainy days, or in confined spaces, when liquid is manually added, new liquid is added to the liquid storage chamber 51. The addition of new liquid increases the liquid pressure in the heat dissipation channel 55, overcoming the elastic force of the spring 65 and pressing the baffle 66 downward. At this time, a gap is formed between the baffle 66 and the inner wall of the expansion groove 62. The liquid flows from the gap into the expansion groove 62 and then out of the jacket body 1 through the leakage plate 63. After the addition of new liquid stops, the liquid in the jacket body 1 flows out of the expansion groove 62 for a certain amount, and the hydraulic pressure in the heat dissipation channel 55 decreases. As the hydraulic pressure decreases, the spring 65 recovers its length until the top edge of the baffle 66 contacts the top surface of the inner wall of the expansion groove 62, at which point the liquid stops flowing. During this process, the liquid in the liquid storage chamber 51, the first connecting channel 52, the liquid storage chamber 53, the second connecting channel 54, and the heat dissipation channel 55 flows, which not only removes heat from the jacket body 1 but also replaces the liquid in the jacket body 1 with a lower temperature liquid, thereby improving the heat dissipation effect of the subsequent jacket body 1.

[0024] In a further preferred embodiment, a filter is provided at the liquid inlet 56 to prevent debris from entering the liquid storage chamber 51 and thereby clogging the first connecting channel 52 , the second connecting channel 54 and the heat dissipation channel 55 .

[0025] In a further preferred embodiment, one side of the sheath body 1 is provided with an opening extending through the length of the sheath body 1. The opening communicates with the mounting cavity 2, the lead wire mounting opening 4, and the terminal mounting opening 3, but is disconnected from the cooling assembly 5. This opening facilitates mounting the terminal mounting opening 3 to the terminal of an electrical device and mounting the lead wire mounting opening 4 to a conductor, thereby achieving a sleeved connection between the sheath body 1 and the protected device. A connecting assembly 7 is provided at the opening to facilitate connection and closure of the opening.

[0026] In a further preferred embodiment, the connecting assembly 7 includes a first connecting edge 71 and a second connecting edge 72, which are respectively fixedly connected to the two edges of the opening. The first connecting edge 71 is provided with evenly distributed connecting members 73, and the connecting member 73 includes a pressing portion 731, a connecting rod 732 and a tip 733, which are fixedly connected in sequence. The diameter of the connecting rod 732 is smaller than the diameter of the pressing portion 731, and at least two symmetrically arranged arc-shaped ridges 734 are provided on the curved outer wall of the connecting rod 732 near the tip 733. The diameter of the tip 733 gradually decreases from the end close to the connecting rod 732 to the end away from the connecting rod 732, and the diameter of the end of the tip 733 connected to the connecting rod 732 is equal to the diameter of the connecting rod 732. The second connecting edge 72 is provided with connecting holes corresponding to the connecting members 73, and the diameter of the connecting holes is equal to the diameter of the connecting rod 732.

[0027] When in use, the material of the second connecting edge 72 and the connecting piece 73 is selected to be a material that is resistant to high temperature and can undergo micro-deformation, such as vulcanized silicone rubber. The connecting piece 73 is inserted into the connecting hole. When the arc-shaped ridge 734 moves to the connecting hole, the connecting hole will be slightly deformed, and then the arc-shaped ridge 734 passes through the connecting hole to realize the closed connection between the first connecting edge 71 and the second connecting edge 72.

[0028] Therefore, the present invention adopts a high-temperature resistant insulating sheath with the above structure, which has a simple structure, good heat dissipation, and can prevent the temperature inside the insulating sheath from being too high.

[0029] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A high temperature resistant insulating sheath, characterized in that: The invention comprises a sheath body (1), wherein a mounting cavity (2) is provided in the sheath body (1), one end of the sheath body (1) is provided with a terminal mounting opening (3) connected to the mounting cavity (2), and the other end of the sheath body (1) is provided with a lead mounting opening (4) connected to the mounting cavity (2), and a cooling component (5) is provided in the side wall of the sheath body (1), wherein the cooling component (5) comprises a liquid storage cavity (51), a first connecting channel (52), a liquid storage cavity (53), a second connecting channel ( 54) and a heat dissipation channel (55), the heat dissipation channel (55) is spirally arranged with the central axis of the terminal mounting opening (3) as the axis, the bottom end of the heat dissipation channel (55) is connected to the liquid outlet control component (6), the top end of the heat dissipation channel (55) is connected to the bottom end of the liquid storage chamber (53) through the second connecting channel (54), the top end of the liquid storage chamber (53) is connected to the bottom end of the liquid storage chamber (51) through the first connecting channel (52), and the top end of the liquid storage chamber (51) is provided with a liquid inlet (56).

2. The high temperature resistant insulating sheath according to claim 1, characterized in that: The liquid outlet control component (6) includes a liquid outlet hole (61) arranged in a vertical direction, the top of the liquid outlet hole (61) is connected to the bottom end of the heat dissipation channel (55), and the middle part of the liquid outlet hole (61) is provided with an expansion groove (62), the diameter of the expansion groove (62) is larger than the diameter of the liquid outlet hole (61), the bottom of the liquid outlet hole (61) is fixedly connected to a liquid leakage plate (63), the top surface of the liquid leakage plate (63) is fixedly connected to a guide cylinder (64), the guide cylinder (64) is fixedly connected to the bottom end of a spring (65) in a compressed state, the top end of the spring (65) extends out of the guide cylinder (64) and is fixedly connected to a blocking plate (66), the blocking plate (66) is arranged opposite to the liquid outlet hole (61), and the top edge of the blocking plate (66) is in contact with the top surface of the inner wall of the expansion groove (62).

3. The high temperature resistant insulating sheath according to claim 1, characterized in that: A filter screen is provided at the liquid inlet (56).

4. The high temperature resistant insulating sheath according to claim 1, characterized in that: An opening is provided on one side of the sheath body (1) and passes through the sheath body (1) along the length direction of the sheath body (1). The opening is connected to the installation cavity (2), the lead installation port (4) and the terminal installation port (3). The opening is not connected to the cooling component (5). A connecting component (7) is provided at the opening.

5. The high temperature resistant insulating sheath according to claim 4, characterized in that: The connecting assembly (7) comprises a first connecting edge (71) and a second connecting edge (72) respectively fixedly connected to the two edges of the opening; the first connecting edge (71) is provided with evenly distributed connecting members (73); the connecting member (73) comprises a pressing portion (731), a connecting rod (732) and a tip (733) fixedly connected in sequence; the diameter of the connecting rod (732) is smaller than the diameter of the pressing portion (731); the connecting rod (732) is close to the curved outer wall of the tip (733); At least two symmetrically arranged arc-shaped ridges (734) are provided on the connecting member (732), the diameter of the tip (733) gradually decreases from the end close to the connecting rod (732) to the end away from the connecting rod (732), the diameter of the end of the tip (733) connected to the connecting rod (732) is equal to the diameter of the connecting rod (732), and the second connecting edge (72) is provided with connecting holes corresponding to the connecting member (73) in a one-to-one manner, and the diameter of the connecting holes is equal to the diameter of the connecting rod (732).

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