Intelligent explosion-proof shell connected with cable joint

Abstract

The invention discloses an intelligent explosion-proof shell for connecting a cable joint. The intelligent explosion-proof shell comprises an explosion-proof connecting column and a locking cover, two ends of the anti-explosion connecting column are communicated; the locking covers are detachably connected to the two ends of the anti-explosion connecting column, and through holes are formed in the locking covers. The end part of the cable is inserted into the through hole, and a copper shielding layer of the cable is electrically connected with the locking cover so as to construct an outer shielding layer electric connection channel of the two sections of cables and realize circulation of short-circuit current; wherein the outer wall surface or the inner wall surface of the explosion-proof connecting column is provided with a pair of acquisition points and is in communication connection with a terminal so as to monitor the operation state between the two sections of cables. According to the invention, on the basis of ensuring effective connection of the cable, intelligent monitoring of the operation state of the cable intermediate connection can be realized, and by establishing a continuous and stable electric connection channel, energy accumulation is prevented, formation of interphase short circuit conditions is prevented, explosion prevention in design is realized, and the reliability of the system is improved. And the method has very positive and important significance for safe and stable operation of a cable distribution line.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof cable intermediate connecting joints, and more particularly to an intelligent explosion-proof shell for connecting cable joints. Background Art

[0002] When using cables for power distribution, accidents or even explosions often occur at the intermediate connections of cables due to the influence of factors such as the operating environment, weather changes, system fluctuations, and differentiated construction. Since the cables and the intermediate connections are mainly laid in cable trenches or buried directly underground, it is difficult to directly observe from the ground, so accidents are often difficult to find, unpredictable, and have a large impact. Therefore, it is necessary to install protective equipment on the intermediate joints of the cable to effectively control the degree of damage when the cable joints explode.

[0003] Currently, the commonly used cable explosion-proof shells are usually divided into two parts, the upper and lower shells are buckled together to complete the installation between the two sections of the cable. They do not have intelligent monitoring functions, which leads to many avoidable accidents and often fail at critical moments, making it impossible to effectively guarantee cable protection.

[0004] Therefore, how to provide an explosion-proof cable intermediate connection device that can timely know the operating status of the cable intermediate connection to ensure the safe operation of cable power distribution is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] In view of this, the present invention provides an intelligent explosion-proof shell for connecting cable connectors, wherein an outer shielding layer electrical connection channel is formed at the middle connection position of the two cable sections through a copper shielding layer, a locking cover, an explosion-proof connecting column, a locking cover, and a copper shielding layer, thereby realizing the reliable flow of short-circuit current, ensuring that electrical energy can be effectively discharged in the event of an emergency, preventing energy from accumulating at the connection between the two cable sections and causing an explosion, and avoiding the formation of phase-to-phase short circuit.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] An intelligent explosion-proof housing for connecting a cable connector, comprising an explosion-proof connecting column and a locking cover;

[0008] The two ends of the explosion-proof connecting column are connected and the interior thereof is an explosion-proof cavity; the locking covers are two and are detachably connected to the two ends of the explosion-proof connecting column, and the end surface of the locking cover is provided with a through hole communicating with the explosion-proof cavity;

[0009] The ends of the cables at both ends are respectively inserted into the corresponding through holes at both ends and their copper shielding layers are electrically connected to the locking cover; the copper shielding layers of the two sections of the cables, the locking cover and the explosion-proof connecting column form an outer shielding layer electrical connection channel at the connection position of the two sections of the cables to realize the flow of short-circuit current;

[0010] Wherein, the outer wall surface or the inner wall surface of the explosion-proof connecting column is provided with a plurality of sensors and is communicatively connected to the terminal monitoring equipment to monitor the operating status between the two sections of the cable.

[0011] The beneficial effect of the technical solution of the present invention is that the two sections of cable are respectively inserted into the two locking covers, and the conductors of the two sections of cable are connected to the circuit in the explosion-proof cavity through the connecting hardware. The copper shielding layer of the cable is electrically connected to the locking cover, and the outer shielding layer electrical connection channel at the connection position of the two sections of the cable is constructed by the copper shielding layer, the locking cover, the explosion-proof connecting column and the locking cover. Through this connection method, a continuous and stable cable outer shielding layer electrical connection channel and a reliable flow of short-circuit current can be established, ensuring that in the event of an emergency, the discharge energy can be discharged in the direction of the two sections of the cable away from each other, preventing energy from accumulating between the two sections of the cable and causing an explosion, and avoiding the formation of phase-to-phase short circuits; the sensor can transmit signals, and the terminal monitoring equipment can intelligently collect real-time signals in the explosion-proof cavity, clearly understand the operating status between the two sections of the cable, and no manual inspection is required, thereby realizing intelligent monitoring and explosion-proof of the operating status of the middle connection of the cable; the locking cover and the explosion-proof connecting column are detachable, which is convenient for the assembly of the device and the connection of the cable.

[0012] Preferably, the plurality of sensors include a temperature sensor for collecting temperature information, a humidity sensor for collecting humidity information, a voltage sensor for collecting voltage, and a current sensor for collecting current. By collecting information such as temperature, humidity, voltage, and current, intelligent monitoring of the operating status of the middle connection of the cable can be achieved.

[0013] Preferably, the explosion-proof connecting column comprises a connecting column and a single-phase explosion-proof housing, the two ends of the connecting column are connected to form the explosion-proof cavity, the single-phase explosion-proof housing is wrapped around the outer periphery of the connecting column, and the two locking covers are detachably connected to the two ends of the single-phase explosion-proof housing. The connecting column provides explosion-proof performance, and the single-phase explosion-proof housing is used to establish a current channel in the case of a short circuit, thereby achieving explosion-proof design.

[0014] Preferably, the connecting column is made of silicone rubber or EPDM rubber, and the single-phase explosion-proof housing and the locking cover are made of aluminum alloy or carbon fiber material. Silicone rubber or EPDM rubber material can ensure that the explosion-proof connecting column has the necessary electrical properties, and aluminum alloy or carbon fiber material has a low density and good conductivity, which can ensure that the explosion-proof connecting column has a certain mechanical strength and discharge capacity, while the cost is controllable.

[0015] Preferably, the connecting column and the single-phase explosion-proof housing are integrally formed in a mold or fixed by bonding.

[0016] Preferably, the outer wall of the end of the explosion-proof connecting column is provided with an external thread, and the inner wall of the locking cover is provided with an internal thread that can be screwed with the external thread. The locking cover and the explosion-proof connecting column are connected by threads, which is convenient for installation and disassembly.

[0017] Preferably, the outer wall of the single-phase explosion-proof housing corresponding to the external thread is provided with a positioning countersunk hole, the side wall of the locking cover is provided with a connecting hole, and the threaded end of the locking bolt is screwed into the connecting hole and the positioning countersunk hole in sequence to fasten the locking cover to the single-phase explosion-proof housing. After the locking cover and the single-phase explosion-proof housing are screwed into place, the locking cover and the explosion-proof connecting column can be locked by the cooperation of the locking bolt and the positioning countersunk hole to prevent the locking cover from loosening during use.

[0018] Preferably, the outer wall of the locking cover is also provided with a wrench countersunk hole to achieve locking between the locking cover and the explosion-proof connecting column by a wrench. The locking cover can be rotated relative to the explosion-proof connecting column by inserting a wrench into the wrench countersunk hole, and the locking cover is screwed onto the end of the explosion-proof connecting column by the wrench. The locking cover can be screwed onto the end of the explosion-proof connecting column by the wrench, and a screwing force can be applied to the locking cover by the wrench to ensure that the locking cover can be installed in place.

[0019] Preferably, the length of the internal thread is greater than the length of the external thread, and an annular limiting convex edge is fixed to the outer wall of the explosion-proof connecting column relative to the external thread of the end away from the locking cover, and one end face of the locking cover can be pressed and matched with the annular surface of the limiting convex edge. The limiting convex edge can limit the installation position of the locking cover; because the length of the internal thread is greater than the length of the external thread, the limiting convex edge can also serve as a mark that the locking cover is installed in place.

[0020] Preferably, the explosion-proof connecting column is cylindrical.

[0021] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses an intelligent explosion-proof shell for connecting cable connectors, which can accurately monitor the operating status of the intermediate connection of the cable while ensuring the effective connection of the cable, and prevent energy accumulation and the formation of phase-to-phase short-circuit conditions by establishing a continuous and stable electrical connection channel for the outer shielding layer of the cable, thereby achieving explosion-proof design, which has a very positive and significant significance for the safe and stable operation of the cable distribution line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A cross-sectional view of the intermediate connecting device provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0025] in,

[0026] 1-explosion-proof connecting column; 11-connecting column; 12-single-phase explosion-proof housing; 13-limiting convex edge; 14-external thread; 15-positioning countersunk hole; 16-explosion-proof cavity;

[0027] 2-locking cover; 21-locking bolt; 22-internal thread; 23-spanner countersunk hole; 24-through hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] See attached Figures 1-2 , the embodiment of the present invention discloses an intelligent explosion-proof housing for connecting a cable connector, comprising an explosion-proof connecting column 1 and a locking cover 2;

[0030] The two ends of the explosion-proof connecting column 1 are connected and the interior thereof is an explosion-proof cavity 16; there are two locking covers 2 which are detachably connected to the two ends of the explosion-proof connecting column 1, and the end surface of the locking cover 2 is provided with a through hole 24 which is connected to the explosion-proof cavity 16;

[0031] The ends of the two cable sections are respectively inserted into the corresponding through holes 24 at both ends and the copper shielding layers thereof are electrically connected to the locking cover 2; the copper shielding layers of the two cable sections, the locking cover 2 and the explosion-proof connecting column 1 form an outer shielding layer electrical connection channel at the connection position of the two cable sections to realize the flow of short-circuit current;

[0032] The outer wall or inner wall of the explosion-proof connecting column 1 is provided with a plurality of sensors and is communicatively connected to a terminal monitoring device to monitor the operating status between the two sections of the cable.

[0033] In this embodiment, the multiple sensors include a temperature sensor for collecting temperature information, a humidity sensor for collecting humidity information, a voltage sensor for collecting voltage, and a current sensor for collecting current.

[0034] In actual use, the length of the explosion-proof connecting column is determined according to construction needs, the locking cover is installed at the end of the explosion-proof connecting column, the two sections of cable are respectively inserted into the through holes of the locking cover, the copper shielding layer of the cable is electrically connected to the locking cover, and the sensor is used to collect temperature, humidity, voltage, current and other information at the connection position between the two sections of the cable to monitor the operating status of the middle connection position of the two sections of the cable; the conductor of the cable is connected in the explosion-proof cavity through connecting hardware. The connecting hardware is a prior art and will not be described in detail here.

[0035] The copper shielding layer of the cable can effectively isolate the electromagnetic field generated by the cable and prevent electromagnetic interference from affecting other electronic devices or systems. It can also prevent the signal or power in the cable from leaking into the external environment and maintain the integrity of the signal. In this embodiment, the copper shielding layer of the two sections of the cable forms an electrical connection channel through the locking cover and the explosion-proof connecting column, which can shield the electric field and serve as a channel for short-circuit current when a short circuit occurs in the power system to avoid the occurrence of partial discharge. The conductor of the cable is connected in the explosion-proof cavity through the connecting hardware. The connecting hardware can realize the conductivity between the two sections of the cable on the one hand, and can ensure that the ends of the two sections of the cable will not fall off the locking cover on the other hand.

[0036] Since the cable is electrically connected to the locking cover, when the two sections of the cable are respectively inserted into the locking covers at both ends of the explosion-proof connecting column, the two sections of the cable construct a continuous and stable electrical connection channel for the outer shielding layer at the middle connection position, which is the copper shielding layer, locking cover, explosion-proof connecting column, locking cover, and copper shielding layer. This can achieve reliable flow of energy, ensure that the electric energy can be effectively discharged in the event of an emergency, prevent explosions due to energy accumulation, and avoid the formation of phase-to-phase short circuits.

[0037] The terminal monitoring device is a mobile phone or computer. Through the signal transmission of multiple different sensors, it can intelligently and accurately obtain the operating status between the two sections of cables without the need for manual inspection. The power operator determines whether maintenance of the cable connection is needed based on the different types of sensor signals received by the terminal monitoring device, which can avoid accidents in advance and effectively ensure cable protection.

[0038] The through hole of the locking cover is used to pass the cable, and its size matches the copper shielding layer of the cable. For easy installation, the inner diameter of the locking cover relative to its through hole should be 5 to 10 mm larger than the outer diameter of the copper shielding layer of the cable. The length of the locking cover is not less than 8 cm, and the end of the cable is fully inserted into the locking cover to ensure that the cable in the locking cover has sufficient effective length to ensure the establishment of an electrical connection channel for the outer shielding layer of the cable.

[0039] In some embodiments, the explosion-proof connecting column 1 is cylindrical; the explosion-proof connecting column 1 may include a connecting column 11 and a single-phase explosion-proof housing 12, the two ends of the connecting column 11 are connected to form an explosion-proof cavity 16, the single-phase explosion-proof housing 12 is wrapped around the outer periphery of the connecting column 11, and two locking covers 2 are detachably connected to the two ends of the single-phase explosion-proof housing 12. The connecting column 11 and the single-phase explosion-proof housing 12 can be integrally formed in a mold, or fixed by bonding.

[0040] In some specific embodiments, in order to ensure that the explosion-proof connecting column has the necessary electrical properties, the material of the connecting column should be silicone rubber or EPDM rubber. The shape of the connecting column should be designed according to the connecting hardware structure, with a wall thickness of not less than 5 mm and a length not less than the length of the connecting hardware. The internal electric field concentration position can be optimized by setting a stress cone for electric field distribution. Electric field distribution analysis is performed during design, and the electric field strength under the AC power frequency withstand voltage should be lower than the breakdown voltage of the material.

[0041] The performance of the explosion-proof connecting column is verified and tested. Although its appearance is quite different from traditional technology, its function is still a cable connection. Therefore, in order to ensure that its electrical performance meets the use requirements, it can be tested according to the test requirements of straight-through connectors in GB / T12706.4.

[0042] In other specific embodiments, in order to ensure that the explosion-proof connecting column has the necessary mechanical strength and discharge capacity when in use, and the cost is controllable, the single-phase explosion-proof housing is made of common materials with low density, good conductivity and moderate price, such as aluminum alloy and carbon fiber, and the thickness at the thinnest part should be no less than 3mm, and the thickness at the thickest part should not exceed 10mm. In order to ensure that the explosion-proof connecting column is reliably connected to the locking cover and there are no safety hazards such as electrochemical oxidation during use, the material of the locking cover should be consistent with that of the single-phase explosion-proof housing, and the surface treatment should also be consistent.

[0043] In order to ensure that the performance of the explosion-proof connecting column is reliable, there is no air gap inside, and there is no local discharge during use, when producing the connecting column, adhesive or coupling agent can be applied between the connecting column and the single-phase explosion-proof casing, and the connecting surface can be polished to increase the specific surface area, ensuring that the connection column and the single-phase explosion-proof casing are firmly bonded without air gaps.

[0044] In a specific example, in order to achieve a reliable connection between the locking cover and the explosion-proof connecting column, a threaded locking connection is designed, and an external thread 14 is provided on the outer wall of the end of the explosion-proof connecting column 1, and an internal thread 22 that can be screwed together with the external thread 14 is provided on the inner wall of the locking cover 2.

[0045] In some specific embodiments, the length of the internal thread 22 can be set to be greater than the length of the external thread 14, and an annular limiting protrusion 13 is fixed to the outer wall of the explosion-proof connecting column 1 at one end away from the locking cover 2 relative to its external thread 14, and one end face of the locking cover 2 can be pressed together with the annular surface of the limiting protrusion 13.

[0046] The external thread is threadedly connected to the internal thread, and the thread design length is that the internal thread is longer than the external thread, and the design selection range of the length difference is 2 to 8 mm. The limit convex edge is used to limit the installation position of the locking cover. Due to the existence of the thread design length difference, in actual use, the locking cover can be directly tightened to physical contact with the limit convex edge, which can also serve as a mark of installation in place.

[0047] Specifically, in order to prevent the locking cover from loosening after being screwed together with the explosion-proof connecting column, a positioning countersunk hole 15 is opened on the outer wall of the single-phase explosion-proof casing 12 corresponding to the external thread 14, and a connecting hole is provided on the side wall of the locking cover 2. The threaded end of the locking bolt 21 is screwed into the connecting hole and the positioning countersunk hole 15 in turn to fasten the locking cover 2 to the single-phase explosion-proof casing 12.

[0048] The position and size of the positioning countersunk hole match the locking bolt. When installed in place, the locking bolt is aligned with the position of the positioning countersunk hole. The locking bolt is screwed into the positioning countersunk hole to prevent the locking cover from loosening, thereby achieving a reliable connection between the explosion-proof connecting column and the locking cover.

[0049] The size of the locking bolt is preferably M3~M8mm, the thread is preferably precision fine thread, and the length should not exceed the locking cover. Its appearance can be a hexagon socket head bolt or a machine screw type.

[0050] In order to further optimize the above technical solution and ensure that the locking cover and the explosion-proof connecting column are tightened, a wrench countersunk hole 23 is also provided on the outer wall of the locking cover 2 to achieve the tightening between the locking cover 2 and the explosion-proof connecting column 1 by a wrench.

[0051] The diameter of the wrench countersunk hole is preferably φ5~φ10mm, and the depth is preferably 6~10mm; the wrench is a crescent wrench, and the direction of its force is exactly the tangent direction of the locking cover and consistent with the locking direction. Therefore, the rotation of the crescent wrench can drive the locking cover to rotate, and the crescent wrench is used to achieve locking between the locking cover and the explosion-proof connecting column. In conjunction with the locking bolt, the locking cover can be prevented from loosening during use.

[0052] In a specific example, in order to facilitate effective electrical connection between the locking cover and the copper shielding layer of the cable, a convenient and reliable connection position such as a slot or a threaded hole can be provided on the outside of the locking cover.

[0053] Specifically, to ensure that the present invention can effectively release accidental electrical energy, it is required that the effective cross-sectional area of ​​any cross section of the single-phase explosion-proof housing and the locking cover should not be less than the cross-sectional area of ​​the copper shielding layer of the same type of cable;

[0054] In order to achieve safety and explosion-proof, the design value of its effective cross-sectional area can be one level higher than the cross-sectional area value of the cable copper shielding layer. For example, the effective cross-sectional area of ​​the copper shielding layer is 10mm 2 , then the minimum effective cross-sectional area of ​​any cross section of the single-phase explosion-proof housing and the locking cover can be selected as 16mm 2 , and so on.

[0055] In order to accurately monitor the operating status of the intermediate connection, a collection point may be preset inside the connecting column, or a collection point may be preset outside the single-phase explosion-proof housing to monitor the operating status of the intermediate connection.

[0056] Among them, the preset collection points inside the connecting column have the advantages of reliable data, high sensitivity and fast response speed. However, since the layout of the collection points will cause the electric field distribution to change, the selection of the collection point mode and position needs to be designed and confirmed by analysis software and verified by experiments. The collection method can adopt existing technologies, such as RFID, optical fiber, physical heat conduction, etc.

[0057] The external preset collection points of the single-phase explosion-proof enclosure have the advantages of safety, reliability, low technical threshold and low cost. However, due to the physical separation of the insulation layer between the collection point and the high-energy conductor, there are disadvantages such as data drift, great environmental impact and slow response speed. However, considering the accident model results of the intermediate connection failure, it takes a long time for the potential accident to develop into an accident. Therefore, the method of presetting the external collection points can also reflect the operating status of the intermediate connection to a certain extent.

[0058] The choice of preset method and point during specific design and use needs to be considered comprehensively based on actual usage requirements and costs.

[0059] By adopting the intelligent explosion-proof cable connection device in this embodiment, it is possible to accurately monitor the operating status of the intermediate connection of the cable while ensuring the effective connection of the cable, and to prevent energy accumulation and the formation of phase-to-phase short-circuit conditions by establishing a continuous and stable electrical connection channel for the outer shielding layer, thereby achieving explosion-proof design, which is of great positive significance to the safe and stable operation of the cable distribution line.

[0060] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent explosion-proof shell for connecting a cable connector, characterized in that: It comprises an explosion-proof connecting column (1) and a locking cover (2); The two ends of the explosion-proof connecting column (1) are connected and the interior thereof is an explosion-proof cavity (16); the locking covers (2) are two and are detachably connected to the two ends of the explosion-proof connecting column (1), and the end surface of the locking cover (2) is provided with a through hole (24) communicating with the explosion-proof cavity (16); The ends of the two sections of the cable are respectively inserted into the corresponding through holes (24) at both ends and their copper shielding layers are electrically connected to the locking cover (2); the copper shielding layer of the cable, the locking cover (2) and the explosion-proof connecting column (1) form an outer shielding layer electrical connection channel at the connection position of the two sections of the cable to achieve the flow of short-circuit current; Wherein, the outer wall surface or the inner wall surface of the explosion-proof connecting column (1) is provided with a plurality of sensors and is communicatively connected to a terminal monitoring device to monitor the operating status between the two sections of the cable.

2. The intelligent explosion-proof housing for connecting a cable connector according to claim 1, characterized in that: The multiple sensors include a temperature sensor for collecting temperature information, a humidity sensor for collecting humidity information, a voltage sensor for collecting voltage, and a current sensor for collecting current.

3. The intelligent explosion-proof housing for connecting cable connectors according to claim 1, characterized in that: The explosion-proof connecting column (1) comprises a connecting column body (11) and a single-phase explosion-proof housing (12); the two ends of the connecting column body (11) are connected to form the explosion-proof cavity (16); the single-phase explosion-proof housing (12) is wrapped around the outer circumference of the connecting column body (11); and the two locking covers (2) are detachably connected to the two ends of the single-phase explosion-proof housing (12).

4. The intelligent explosion-proof housing for connecting a cable connector according to claim 3, characterized in that: The connecting column (11) is made of silicone rubber or EPDM rubber, and the single-phase explosion-proof housing (12) and the locking cover (2) are both made of aluminum alloy or carbon fiber material.

5. The intelligent explosion-proof housing for connecting cable connectors according to claim 3, characterized in that: The connecting column (11) and the single-phase explosion-proof housing (12) are integrally formed in a mold or fixed by bonding.

6. The intelligent explosion-proof housing for connecting cable connectors according to claim 3, characterized in that: The outer wall of the end of the single-phase explosion-proof housing (12) is provided with an external thread (14), and the inner wall of the locking cover (2) is provided with an internal thread (22) that can be screwed together with the external thread (14).

7. The intelligent explosion-proof housing for connecting cable connectors according to claim 6, characterized in that: The outer wall of the single-phase explosion-proof housing (12) corresponding to the external thread (14) is provided with a positioning countersunk hole (15), and the side wall of the locking cover (2) is provided with a connecting hole. The threaded end of the locking bolt (21) is screwed into the connecting hole and the positioning countersunk hole (15) in sequence to fasten the locking cover (2) to the single-phase explosion-proof housing (12).

8. The intelligent explosion-proof housing for connecting cable connectors according to claim 7, characterized in that: The outer wall of the locking cover (2) is also provided with a wrench countersunk hole (23) so as to achieve locking between the locking cover (2) and the explosion-proof connecting column (1) by means of a wrench.

9. The intelligent explosion-proof housing for connecting cable connectors according to claim 6, characterized in that: The length of the internal thread (22) is greater than the length of the external thread (14), and an annular limiting convex edge (13) is fixed to the outer wall of the explosion-proof connecting column (1) corresponding to the end of the external thread (14) away from the locking cover (2), and one end surface of the locking cover (2) can be pressed and matched with the annular surface of the limiting convex edge (13).

10. An intelligent explosion-proof housing for connecting a cable connector according to any one of claims 1 to 9, characterized in that: The explosion-proof connecting column (1) is cylindrical.

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