Fireproof and explosion-proof shell for intermediate joint of ultrahigh-voltage cable

Abstract

The utility model discloses a fireproof and explosion-proof shell for an intermediate joint of an ultra-high-voltage cable, which is used for the intermediate joint of the ultra-high-voltage cable and comprises a shell, a first wire outlet end cover, a second wire outlet end cover and a ground wire end cover, and a ground wire and a lead-out wire of the intermediate joint are led out from the same end of the shell. A wire outlet channel is formed between the first wire outlet end cover and the second wire outlet end cover so that a lead-out wire can be led out of the shell, a ground wire channel is formed between the second wire outlet end cover and the ground wire end cover so that a ground wire can be led out of the shell, and installation of the lead-out wire and the ground wire is more convenient. The device is applied to the technical field of high-voltage power cable joint protection.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage power cable joint protection, in particular to a fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint. Background Art

[0002] With the construction of power lines, ultra-high voltage power cables are increasingly used in practical engineering applications. In large-scale projects with large spans and wide scopes, ultra-high voltage intermediate joints are indispensable for connecting power cables. However, since ultra-high voltage power cables are usually located in unconventional working conditions such as underground and tunnels, coupled with the potential hidden dangers brought by ultra-high voltage, intermediate joints are prone to dangerous failures such as breakdown, spontaneous combustion, and self-explosion. In order to meet the fire and explosion protection requirements of intermediate joints, protective shells need to be installed on cable intermediate joints in some cases. Usually, the fire and explosion-proof shells for ultra-high voltage cable intermediate joints on the market are large in size and heavy in weight. They cannot meet the sealing requirements while completing the cable grounding at the intermediate joints. They are difficult to meet actual use needs and difficult to install. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint, which can improve the convenience of installation.

[0004] The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to an embodiment of the present invention comprises:

[0005] a housing defining a mounting cavity for mounting the intermediate joint;

[0006] The first outlet end cover, the second outlet end cover, and the grounding wire end cover are all connected to the first end of the shell and seal the first end together. The first outlet end cover is sealed to the second outlet end cover, and the second outlet end cover is sealed to the grounding wire end cover. The first outlet end cover and the second outlet end cover together form an outlet channel connecting the shell and the outside world. The grounding wire end cover and the second outlet end cover together form a grounding wire channel connecting the shell and the outside world.

[0007] The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint according to the embodiment of the utility model has at least the following beneficial effects: the lead-out wire part of the intermediate joint can be first installed on the first outlet end cover, and then covered on the second outlet end cover, so that the lead-out wire is located in the outlet channel, and then the grounding wire of the intermediate joint is installed on the second outlet end cover, and the grounding wire end cover is covered on the second outlet end cover, so that the grounding wire is located in the grounding wire channel, and the lead-out wire and the grounding wire do not need to be directly passed through, but the wires are installed first and then a channel for installing the wires is formed, which makes the installation of the lead-out wire and the grounding wire more convenient, and the position of the lead-out wire in the outlet channel and the position of the grounding wire in the grounding channel are controllable, making the installation more convenient.

[0008] According to some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint also includes a first sealing layer and a first sealing fixing layer. The first sealing layer is used to seal the grounding wire channel and the gap between the grounding wire passing through the grounding wire channel and the grounding channel. The first sealing fixing layer is arranged on the surface of the first sealing layer to fix and seal the first sealing layer for a second time.

[0009] According to some embodiments of the present invention, the fireproof and explosion-proof housing for the ultra-high voltage cable intermediate joint further includes a first sealing gasket, which is arranged between the second outlet end cover and the grounding wire end cover.

[0010] According to some embodiments of the present invention, the fireproof and explosion-proof housing for an ultra-high voltage cable intermediate joint further includes an explosion-proof pressure relief device, which is provided at a pressure relief port of the housing, and the pressure relief port is connected to the installation cavity;

[0011] The explosion-proof pressure relief device is configured to open the pressure relief port and connect the installation cavity with the outside world when the pressure in the installation cavity reaches a preset pressure.

[0012] According to some embodiments of the present invention, the explosion-proof pressure relief device includes a bursting disc provided at the pressure relief port and a baffle provided outside the housing, the bursting disc seals the pressure relief port, and a pressure relief channel communicating with the outside is formed between the baffle and the housing;

[0013] The explosion-proof pressure relief device is configured such that when the pressure in the installation cavity reaches a preset pressure, the bursting disc opens and the installation cavity is connected to the outside.

[0014] According to some embodiments of the present invention, the fireproof and explosion-proof housing for an ultra-high voltage cable intermediate joint further comprises a gas fire extinguishing device disposed within the housing;

[0015] Wherein, the gas fire extinguishing device is configured to automatically spray fire extinguishing gas when the installation cavity is in a preset scene.

[0016] According to some embodiments of the present invention, the shell includes a first half shell, a second half shell, a second sealing gasket and a second sealing layer, the first half shell is connected to the second half shell and encloses the installation cavity, the second sealing layer is arranged on the first connecting surface of the first half shell and the second connecting surface of the second half shell, and the second sealing gasket is arranged between the two second sealing layers.

[0017] According to some embodiments of the present invention, the fireproof and explosion-proof housing for an ultra-high voltage cable intermediate joint further includes a current detector, which is connected to the housing and configured to send an alarm message when current is detected.

[0018] According to some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further includes a support block connected to the inner circumference of the shell to support the intermediate joint and be flame-retardant.

[0019] According to some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further includes a sealing flange, which is sealed and connected to the inspection port of the shell, and the sealing flange is detachably connected to the shell.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a structural diagram of a fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to an embodiment of the present invention;

[0023] Figure 2 A half-section schematic diagram of a fireproof and explosion-proof casing for an ultra-high voltage cable intermediate joint according to an embodiment of the present utility model;

[0024] Figure 3 This is a structural diagram of a second outlet end cover and a grounding wire end cover of a fireproof and explosion-proof housing for an ultra-high voltage cable intermediate joint according to an embodiment of the present invention;

[0025] Figure 4 The present invention is a cross-sectional schematic diagram of a second outlet end cover and a ground wire end cover of a fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to an embodiment of the present invention.

[0026] Figure Number:

[0027] Housing 100;

[0028] First end cover 110; first outlet end cover 111; second outlet end cover 112; grounding end cover 113; outlet channel 114; grounding channel 115; second end cover 120; first half shell 130; second half shell 140;

[0029] a first sealing layer 200;

[0030] a first sealing gasket 300;

[0031] Explosion-proof pressure relief device 400;

[0032] Gas fire extinguishing device 500;

[0033] Current detector 600;

[0034] Support pad 700;

[0035] Sealing flange 800. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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.

[0038] In the description of this utility model, "a number" refers to one or more, and "a plurality" refers to two or more. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Reference Figures 1 to 4As shown, the embodiment of the present invention proposes a fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint, including: a shell 100, a first outlet end cover 111, a second outlet end cover 112 and a grounding wire end cover 113. The grounding wire and the lead-out wire of the intermediate joint are led out from the same end of the shell 100. An outlet channel 114 is formed between the first outlet end cover 111 and the second outlet end cover 112 for leading the lead-out wire out of the shell 100. A grounding wire channel 115 is formed between the second outlet end cover 112 and the grounding wire end cover 113 for leading the grounding wire out of the shell 100, making the installation of the lead-out wire and the grounding wire more convenient.

[0041] In this embodiment, the housing 100 is cylindrical and defines a cylindrical mounting cavity. The uniform wall thickness of the housing 100 ensures structural strength while achieving lightweight construction, reducing the burden of installation. The mounting cavity is used to accommodate the intermediate connector, and a fire- and explosion-proof structure is also provided within the mounting cavity to enhance safety. The fire- and explosion-proof housing for the intermediate connector of an ultra-high voltage cable includes a first end cap 110 and a second end cap 120, which are disposed at opposite ends of the housing 100. The first and second end caps 110, 120 both narrow in a direction away from the housing 100 to a diameter close to the diameter of the lead wires. This reduces the gap between the first and second end caps 110, 120, and the lead wires, making sealing more convenient.

[0042] The first end cover 110 includes a first outlet end cover 111, a second outlet end cover 112 and a grounding wire end cover 113. The first outlet end cover 111, the second outlet end cover 112 and the grounding wire end cover 113 are all connected to the first end of the shell 100 and seal the first end together. The first outlet end cover 111 is sealedly connected to the second outlet end cover 112, and the second outlet end cover 112 is sealedly connected to the grounding wire end cover 113. The first outlet end cover 111 and the second outlet end cover 112 together form an outlet channel 114 connecting the shell 100 with the outside world. The grounding wire end cover 113 and the second outlet end cover 112 together form a grounding wire channel 115 connecting the shell 100 with the outside world.

[0043] In this embodiment, the first outlet end cap 111 substantially constitutes one half of the first end cap 110, while the second outlet end cap 112 and the grounding end cap 113 together substantially constitute the other half of the first end cap 110. A first semicircular groove is defined between the opposing surfaces of the first outlet end cap 111 and the second outlet end cap 112, and a second semicircular groove is defined between the opposing surfaces of the second outlet end cap 112 and the first outlet end cap 111. Together, the first and second semicircular grooves form an outlet channel 114. A third semicircular groove is defined between the opposing surfaces of the second outlet end cap 112 and the grounding end cap 113, and a fourth semicircular groove is defined between the opposing surfaces of the grounding end cap 113 and the second outlet end cap 112. Together, the third and fourth semicircular grooves form a grounding channel 115.

[0044] Specifically, the first outlet end cap 111 is semi-conical in shape and has a first flange. The first flange is opposite to the end face of the housing 100. The end face of the housing 100 has a connecting flange. The connecting flange has connecting screw holes along the circumference of the housing 100. The first flange has a first screw hole along the circumference of the first end cap 110. The first screw hole is aligned with the connecting screw hole and is locked by fasteners, such as a bolt and nut, to achieve the connection between the first outlet end cap 111 and the end of the housing 100. Similarly, the second outlet end cap 112 and the housing 100 can also be connected and locked by flanges and fasteners, and the grounding wire end cap 113 and the housing 100 can also be connected and locked by flanges and fasteners. Furthermore, the first outlet end cap 111 and the second outlet end cap 112, and the second outlet end cap 112 and the grounding wire end cap 113 can also be locked by flanges and fasteners.

[0045] As another embodiment, the first outlet end cover 111 is roughly in the shape of a semi-cone, that is, the first outlet end cover 111 basically constitutes half of the first end cover 110, and the second outlet end cover 112 and the grounding wire end cover 113 are both roughly in the shape of a quarter of a cone, that is, the second outlet end cover 112 and the grounding wire end cover 113 basically constitute a quarter of the first end cover 110, the second outlet end cover 112 and the grounding wire end cover 113 are both sealedly connected to the first outlet end cover 111, the first outlet end cover 111, the second outlet end cover 112 and the grounding wire end cover 113 form an outlet channel 114 at the center position of the first end cover 110, and the opposite surfaces of the second outlet end cover 112 and the grounding wire end cover 113 form a grounding wire channel 115.

[0046] It is worth understanding that the lead-out wire part of the intermediate joint can be first installed on the first outlet end cover 111, and then covered on the second outlet end cover 112, so that the lead-out wire is located within the outlet channel 114, and then the grounding wire of the intermediate joint is installed on the second outlet end cover 112, and covered on the second outlet end cover 112 through the grounding wire end cover 113, so that the grounding wire is located within the grounding wire channel 115. The lead-out wire and the grounding wire do not need to be passed through directly, but the wires are installed first and then a channel for installing the wires is formed. The installation of the lead-out wire and the grounding wire is more convenient, and the position of the lead-out wire in the outlet channel 114 and the position of the grounding wire in the grounding channel are controllable, making installation more convenient.

[0047] Reference Figure 2As shown, in some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint also includes a first sealing layer 200 and a first sealing fixing layer. The first sealing layer 200 is used to seal the grounding wire channel 115 and the gap between the grounding wire passing through the grounding wire channel 115 and the grounding channel. The first sealing fixing layer is arranged on the surface of the first sealing layer 200 to fix and seal the first sealing layer 200 for a second time.

[0048] In this embodiment, the first sealing layer 200 is epoxy mud, and the first sealing layer 200 can be adhered to the outer periphery of the second outlet end cover 112 and the grounding wire end cover 113, and seal the gap between the grounding wire and the grounding channel to achieve sealing of the grounding channel; the first sealing fixing layer includes a waterproof tape and a PVC tape, and the waterproof tape and the PVC tape are wrapped around the outside of the first sealing layer 200 to strengthen the connection tightness between the first sealing layer 200 and the second outlet end cover 112 and the grounding wire end cover 113, and fix the first sealing layer 200 to improve the sealing effect; at the same time, the waterproof tape can play a waterproof effect, and the complete surrounding coverage of the waterproof tape and the PVC tape can also play a certain secondary sealing effect, further improving the sealing performance.

[0049] In addition, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint also includes a second sealing layer and a second sealing fixing layer. The second sealing layer is used to seal the outlet channel 114 and the gap between the lead wire passing through the outlet channel 114 and the grounding channel. The second sealing fixing layer is arranged on the surface of the second sealing layer to fix and seal the second sealing layer for the second time.

[0050] Reference Figure 4 As shown, in some embodiments of the present invention, the fireproof and explosion-proof housing for the ultra-high voltage cable intermediate joint further includes a first sealing gasket 300 , which is disposed between the second outlet end cover 112 and the grounding wire end cover 113 .

[0051] In this embodiment, first sealing gasket 300 seals the gap between second outlet end cap 112 and grounding end cap 113, thereby improving the sealing effect of the fireproof and explosion-proof enclosure for the ultra-high voltage cable intermediate joint. Furthermore, sealant may be applied to the connecting surface between second outlet end cap 112 and grounding end cap 113 to further enhance the sealing effect.

[0052] Reference Figure 1 As shown, in some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint also includes an explosion-proof pressure relief device 400, which is arranged at the pressure relief port of the shell 100, and the pressure relief port is connected to the installation cavity; wherein, the explosion-proof pressure relief device 400 is configured as follows: when the pressure in the installation cavity reaches a preset pressure, the explosion-proof pressure relief device 400 opens the pressure relief port and connects the installation cavity with the outside world.

[0053] It's important to understand that when the pressure in the installation chamber reaches the preset pressure, it means that the pressure in the installation chamber rises rapidly when an open flame or high temperature is generated within the explosion-proof pressure relief device 400. The preset pressure is the pressure value in the installation chamber during or after the pressure rises. Upon reaching the preset pressure, the explosion-proof pressure relief device 400 actively or passively opens the pressure relief vent, connecting the installation chamber to the outside world. The gas in the installation chamber is discharged through the pressure relief vent to the outside world due to the pressure differential between the two, thereby balancing the pressure.

[0054] In some embodiments of the present invention, the explosion-proof pressure relief device 400 includes a bursting disc provided at the pressure relief port and a baffle provided outside the shell 100, the bursting disc seals the pressure relief port, and a pressure relief channel connected to the outside is formed between the baffle and the shell 100; wherein, the explosion-proof pressure relief device 400 is configured as follows: when the pressure in the installation cavity reaches a preset pressure, the bursting disc opens, and the installation cavity is connected to the outside.

[0055] In this embodiment, the explosion-proof pressure relief device 400 is passively opened by a bursting disc. The pressure applied by the pressure difference exceeds the deformation limit of the bursting disc, causing the bursting disc to rupture, thereby opening the pressure relief port. After the pressure relief port is opened, the gas escapes to the outside, and the baffle blocks the explosion-proof and flame-retardant objects in the pressure relief port back into the installation cavity, further improving the explosion-proof performance within the installation cavity.

[0056] Reference Figure 2 As shown, in some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint also includes a gas fire extinguishing device 500 arranged in the shell 100; wherein, the gas fire extinguishing device 500 is configured to automatically spray fire extinguishing gas when the installation cavity is in a preset scene.

[0057] It is worth noting that the gas fire extinguishing device 500 can proactively extinguish fires in preset scenarios, including high-temperature scenarios and dense smoke scenarios. Taking the high-temperature scenario as an example, the gas fire extinguishing device 500 includes a temperature detector and a gas fire extinguisher. The temperature detector serves as a trigger for the gas fire extinguishing device 500. At a preset temperature, the temperature detector is triggered, which in turn activates the gas fire extinguisher, which then automatically sprays fire-extinguishing gas to extinguish the fire. In dense smoke scenarios, the temperature detector can be replaced with a smoke alarm. In this embodiment, the gas fire extinguishing device 500 is secured to the inner circumference of the housing 100 using PVC adhesive tape, which also facilitates regular replacement of the gas fire extinguishing device 500.

[0058] Reference Figure 1 and Figure 2As shown, in some embodiments of the present invention, the shell 100 includes a first half shell 130, a second half shell 140, a second sealing gasket and a second sealing layer. The first half shell 130 is connected to the second half shell 140 and encloses a mounting cavity. The second sealing layer is arranged on the first connecting surface of the first half shell 130 and the second connecting surface of the second half shell 140, and the second sealing gasket is arranged between the two second sealing layers.

[0059] In this embodiment, the first half shell 130 and the second half shell 140 are both semi-cylindrical shells. The first half shell 130 and the second half shell 140 are connected as a whole through flanges and fasteners. The second sealing gasket and the second sealing layer are used to increase the sealing performance of the first half shell 130 and the second half shell 140, so that the sealing performance of the connection position between the first half shell 130 and the second half shell 140 is higher.

[0060] Reference Figure 2 As shown, in some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further includes a current detector 600, which is connected to the shell 100 and is configured to send an alarm message when current is detected.

[0061] It is worth understanding that the current detector 600 is used to detect whether current is passing through the shell 100, and then determine whether the shell 100 is effectively grounded, thereby reducing the probability of fault occurrence. Among them, the current detector 600 can send an alarm message to the server of the control center, or after sending a signal to the server, the server controls the alarm to sound an alarm, etc.

[0062] In this embodiment, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint is connected to the ground through a separate grounding wire, wherein the grounding wire of the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint is directly connected to the outer peripheral surface of the shell 100.

[0063] Reference Figure 2 As shown, in some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further includes a support pad 700, which is connected to the inner circumference of the shell 100 to support the intermediate joint and be used for flame retardancy.

[0064] It is worth noting that the support block 700 supports the intermediate joint and also acts as a position limiter for the intermediate joint, thereby stabilizing the position of the intermediate joint within the installation cavity and preventing it from shaking, making the intermediate joint more stable during use. Furthermore, the support block 700 has a flame retardant function, which can better prevent the combustion process within the installation cavity.

[0065] Reference Figure 1As shown, in some embodiments of the present invention, the fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further includes a sealing flange 800, which is sealed and connected to the inspection port of the shell 100, and the sealing flange 800 is detachably connected to the shell 100.

[0066] It is worth noting that maintenance personnel need to regularly inspect the equipment. During inspection, they can remove the sealing flange 800 and observe the operating status of the intermediate joint within the housing 100 through the inspection port, thereby improving inspection convenience and making inspection and maintenance more convenient. The gas fire extinguishing device 500 can be installed near the inspection port to facilitate regular replacement by maintenance personnel, making it more convenient to use.

[0067] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint, characterized in that: include: a housing defining a mounting cavity for mounting the intermediate joint; The first outlet end cover, the second outlet end cover, and the grounding wire end cover are all connected to the first end of the shell and seal the first end together. The first outlet end cover is sealed to the second outlet end cover, and the second outlet end cover is sealed to the grounding wire end cover. The first outlet end cover and the second outlet end cover together form an outlet channel connecting the shell and the outside world. The grounding wire end cover and the second outlet end cover together form a grounding wire channel connecting the shell and the outside world.

2. The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint according to claim 1 is characterized in that: The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint also includes a first sealing layer and a first sealing fixing layer. The first sealing layer is used to seal the grounding wire channel and the gap between the grounding wire passing through the grounding wire channel and the grounding channel. The first sealing fixing layer is arranged on the surface of the first sealing layer to fix and seal the first sealing layer for a second time.

3. The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint according to claim 1 is characterized in that: The fireproof and explosion-proof housing for the ultra-high voltage cable intermediate joint further includes a first sealing gasket, which is arranged between the second outlet end cover and the grounding wire end cover.

4. The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to claim 1, characterized in that: The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further includes an explosion-proof pressure relief device, which is provided at a pressure relief port of the shell, and the pressure relief port is connected to the installation cavity; The explosion-proof pressure relief device is configured to open the pressure relief port and connect the installation cavity with the outside world when the pressure in the installation cavity reaches a preset pressure.

5. The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint according to claim 4, characterized in that: The explosion-proof pressure relief device includes a bursting disc provided at the pressure relief port and a baffle provided outside the housing, the bursting disc seals the pressure relief port, and a pressure relief channel communicating with the outside is formed between the baffle and the housing; The explosion-proof pressure relief device is configured such that when the pressure in the installation cavity reaches a preset pressure, the bursting disc opens and the installation cavity is connected to the outside.

6. The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to claim 1, characterized in that: The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further comprises a gas fire extinguishing device provided in the shell; Wherein, the gas fire extinguishing device is configured to automatically spray fire extinguishing gas when the installation cavity is in a preset scene.

7. The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to claim 1, characterized in that: The shell includes a first half shell, a second half shell, a second sealing gasket and a second sealing layer. The first half shell is connected to the second half shell and encloses the installation cavity. The second sealing layer is arranged on the first connecting surface of the first half shell and the second connecting surface of the second half shell. The second sealing gasket is arranged between the two second sealing layers.

8. The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to claim 1, characterized in that: The fireproof and explosion-proof housing for an ultra-high voltage cable intermediate joint further comprises a current detector connected to the housing and configured to send an alarm message when current is detected.

9. The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to claim 1, characterized in that: The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further comprises a support block connected to the inner circumferential surface of the shell to support the intermediate joint and to provide flame retardancy.

10. The fireproof and explosion-proof shell for an ultra-high voltage cable intermediate joint according to claim 1, characterized in that: The fireproof and explosion-proof shell for the ultra-high voltage cable intermediate joint further comprises a sealing flange, which is sealed and connected to the inspection port of the shell, and the sealing flange is detachably connected to the shell.

Images