Explosion alarm device for cable well intermediate joint

Abstract

This invention relates to the field of safety alarm equipment technology, specifically an explosion alarm device for cable well joints. A smoke detector and a temperature detector are fixedly installed on the top surface of an upper mounting box, with their probes located inside the upper mounting box. Two explosion-proof enclosures are fixedly embedded inside the upper and lower mounting boxes, respectively, and wiring grooves are provided on the side walls of the explosion-proof enclosures. A lifting frame is fixedly mounted above a movable frame via a connecting rod, and warning light strips and buzzers are fixedly embedded on the side walls of the lifting frame. This device enables more accurate detection of explosions at cable joints and effectively prevents damage to equipment and personnel inside and outside the cable well, ensuring the safety of the cable well. The warning light strips and buzzers on the lifting frame provide outdoor alarms, facilitating alerts to maintenance personnel and pedestrians, and enabling maintenance personnel to locate the explosion point more quickly and efficiently.

Description

Technical Field

[0001] This invention relates to the field of safety alarm equipment technology, specifically to an explosion alarm device for intermediate joints in cable wells. Background Technology

[0002] As the power grid industry continues to expand, more and more cable wells are being built, and the number of joints connecting these cable wells is also increasing. Therefore, it is important to pay attention to the daily management and damage handling of these cable well joints.

[0003] When an explosion occurs at a joint in a cable well, workers need to inspect each cable well individually, which is a cumbersome process. Furthermore, for safety reasons, it is not possible to immediately alert pedestrians in the vicinity to prevent them from getting too close and causing danger. Therefore, there is an urgent need for an explosion alarm device for intermediate joints in cable wells. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a simple, rationally designed, and easy-to-use explosion alarm device for intermediate joints in cable wells, which can solve the technical problems in existing technologies.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it includes a lower mounting box and an upper mounting box, the upper mounting box is provided on the upper side of the lower mounting box, and the cable joint in the cable well is passed through the cable groove opened on the lower mounting box and the upper mounting box; a manhole cover is provided on the upper side of the cable well; a smoke detector and a temperature detector are fixedly installed on the top surface of the upper mounting box, and the probes of the smoke detector and the temperature detector are both located inside the upper mounting box;

[0006] The explosion-proof enclosure consists of two enclosures, which are respectively fixedly embedded inside the upper and lower mounting boxes, and the side walls of the explosion-proof enclosures are provided with wire passage grooves.

[0007] The enclosure fixing mechanism comprises several units, which are respectively located at the four corners of the upper and lower mounting boxes.

[0008] The support adjustment mechanism comprises several parts, which are symmetrically arranged on the front and rear side walls of the lower mounting box. The outer end of the support adjustment mechanism abuts against the inner side wall of the cable well.

[0009] A movable frame is movably disposed inside the cable well. The left and right side walls of the movable frame are slidably disposed on guide rails disposed on the inner side wall of the cable well. A threaded rod is threadedly inserted through the rear side of the movable frame. The threaded rod is rotatably disposed on the rear side wall inside the cable well via a shaft seat. The lower end of the threaded rod is fixedly connected to the output end of a drive motor. The drive motor is fixedly disposed on the inner side wall of the cable well via a motor bracket. The drive motor is connected to an external power source.

[0010] The lifting frame is fixedly installed above the movable frame by a connecting rod. The position of the lifting frame is set to match the manhole cover. Warning light strips and buzzers are fixedly embedded on the side walls of the lifting frame, and the warning light strips and buzzers are connected to an external power source.

[0011] As a further improvement of the present invention, the housing fixing mechanism includes:

[0012] A fixing rod is vertically fixed on one corner of the top surface of the lower mounting box, and an annular groove is provided at the upper end of the fixing rod; the upper end of the fixing rod moves through the side wall of the upper mounting box and is exposed on the top surface of the upper mounting box.

[0013] The limiting strip is rotatably mounted on the top surface of the upper mounting box via a rotating shaft and bearing, and is movably engaged in the annular groove via a slot on it.

[0014] A torsion spring is sleeved on the pivot at the end of the limiting strip, and the two ends of the torsion spring are fixedly connected to the top surface of the upper mounting box and the side wall of the limiting strip, respectively.

[0015] With the above technical solution design, when the upper mounting box is installed on the lower mounting box, the fixing rod is inserted into the upper mounting box, and then the torque of the torsion spring is used to tightly lock the buckle on the limiting strip into the inside of the annular groove to limit the fixing rod, thereby ensuring that the upper mounting box and the lower mounting box do not separate.

[0016] As a further improvement of the present invention, several mounting plates are fixedly arranged on the top surface of the upper mounting box, and magnets are fixedly arranged on each mounting plate, and the magnets are magnetically attracted to the limiting strip; the setting of the magnets facilitates the fixing of the limiting strip when the upper mounting box is installed, and prevents the torsion spring from rebounding.

[0017] As a further improvement of the present invention, several actuating grooves are integrally formed on the side wall of the limiting strip; the limiting strip can be easily adjusted by setting the actuating grooves.

[0018] As a further improvement of the present invention, the support adjustment mechanism includes:

[0019] The mounting rod is vertically fixed on the side wall of the lower mounting box, and a square groove is provided in the middle of the mounting rod.

[0020] An internally threaded sleeve, one end of which is rotatably fitted onto the end of a mounting rod via a bearing;

[0021] An adjusting screw, one end of which is inserted into the inside of an internally threaded sleeve via a threaded rotation, and a square rod is fixedly connected to the inner end of the adjusting screw, the square rod being movably inserted into a square groove;

[0022] The support foot is located at the end of the adjusting threaded rod.

[0023] Through the above technical solution design, rotating the internal threaded sleeve causes the adjusting screw to extend and retract due to the threaded connection between the adjusting screw and the internal threaded sleeve, and the guiding and limiting effect of the square rod and square groove. This allows the support foot to abut against the inner wall of the cable well, thus fixing the lower mounting box.

[0024] As a further improvement of the present invention, several conical heads are fixedly provided on the side wall of the support foot; the setting of the conical heads increases the support grip between the support foot and the side wall of the cable well.

[0025] As a further improvement of the present invention, the end face of the support foot is rotatably connected to the end of the adjusting screw via a ball joint bearing; the ball joint bearing facilitates the adjustment of the angle of the support foot, making it suitable for different cable well walls.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. The installation of the upper and lower mounting boxes and the explosion-proof enclosure seals the cable joints inside the cable well, enabling more accurate detection of explosions at the cable joints and effectively preventing damage to equipment and personnel inside and outside the cable well, thus ensuring the safety of the cable well.

[0028] 2. The lifting frame allows the manhole cover to be lifted a certain distance when smoke detectors and temperature detectors detect an explosion. The warning light strip and buzzer on the lifting frame will then sound an alarm, alerting maintenance personnel and pedestrians and enabling maintenance personnel to locate the explosion point more quickly and efficiently. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 This is the southeast isometric view of the present invention.

[0032] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0033] Figure 4 yes Figure 2 Enlarged view of part B in the image.

[0034] Figure 5 This is an exploded structural diagram of the upper and lower mounting boxes of the present invention.

[0035] Figure 6 yes Figure 5 Enlarged view of section C in the image.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Lower mounting box; 2. Upper mounting box; 3. Cable trough; 4. Cable well; 5. Well cover; 6. Smoke detector; 7. Temperature detector; 8. Explosion-proof enclosure; 9. Moving frame; 10. Guide rail; 11. Threaded rod; 12. Drive motor; 13. Lifting frame; 14. Connecting rod; 15. Warning light strip; 16. Buzzer; 17. Enclosure fixing mechanism; 17-1. Fixing rod; 17-2. Annular groove; 17-3. Limiting strip; 17-4. Bayonet; 17-5. Torsion spring; 18. Mounting plate; 19. Magnet; 20. Support adjustment mechanism; 20-1. Mounting rod; 20-2. Square groove; 20-3. Internal threaded sleeve; 20-4. Adjusting screw; 20-5. Square rod; 20-6. Support foot; 21. Conical head; 22. Ball bearing. Detailed Implementation

[0038] The invention will now be further described with reference to the accompanying drawings.

[0039] Example 1:

[0040] See as Figure 1-6 As shown, this embodiment includes a lower mounting box 1 and an upper mounting box 2. The upper mounting box 2 is provided on the upper side of the lower mounting box 1, and the cable connector in the cable well 4 is passed through the cable groove 3 that is opened on the lower mounting box 1 and the upper mounting box 2. A well cover 5 is provided on the upper side of the cable well 4. A smoke detector 6 and a temperature detector 7 are fixedly installed on the top surface of the upper mounting box 2, and the probes of the smoke detector 6 and the temperature detector 7 are both located inside the upper mounting box 2 to detect the internal environment of the upper mounting box 2 and the lower mounting box 1. The detection range is small and the accuracy is high.

[0041] The explosion-proof enclosure 8 consists of two enclosures, which are respectively fixedly embedded inside the upper mounting box 2 and the lower mounting box 1, and the side wall of the explosion-proof enclosure 8 is provided with a wire groove 3.

[0042] The box fixing mechanism 17 consists of several parts, and is respectively set at the four corners of the upper mounting box 2 and the lower mounting box 1;

[0043] The support adjustment mechanism 20 consists of several parts, which are symmetrically arranged on the front and rear side walls of the lower mounting box 1. The outer end of the support adjustment mechanism 20 is set to abut against the inner side wall of the cable well 4.

[0044] A movable frame 9 is movably disposed inside the cable well 4. The left and right side walls of the movable frame 9 are slidably disposed on guide rails 10 disposed on the inner side wall of the cable well 4. A threaded rod 11 is threadedly inserted through the rear side of the movable frame 9. The threaded rod 11 is rotatably disposed on the rear side wall inside the cable well 4 via a shaft seat. The lower end of the threaded rod 11 is fixedly connected to the output end of a drive motor 12. The drive motor 12 is fixedly disposed on the inner side wall of the cable well 4 via a motor bracket. The drive motor 12 is connected to an external power source.

[0045] The lifting frame 13 is fixedly installed above the movable frame 9 by a connecting rod 14. The position of the lifting frame 13 is matched with the manhole cover 5. Warning light strips 15 and buzzers 16 are fixedly embedded on the side walls of the lifting frame 13 by bolts, and the warning light strips 15 and buzzers 16 are connected to an external power source.

[0046] Example 2:

[0047] See as Figure 1-6 As shown, based on Embodiment 1, the housing fixing mechanism 17 includes:

[0048] The fixing rod 17-1 is vertically fixed to one corner of the top surface of the lower mounting box 1 by bolts. The upper end of the fixing rod 17-1 is provided with an annular groove 17-2. After the upper end of the fixing rod 17-1 moves through the side wall of the upper mounting box 2, it is exposed on the top surface of the upper mounting box 2.

[0049] The limiting strip 17-3 is rotatably mounted on the top surface of the upper mounting box 2 via a rotating shaft and bearing. The limiting strip 17-3 is movably engaged in the interior of the annular groove 17-2 via a bayonet 17-4 opened on it.

[0050] Torsion spring 17-5 is sleeved on the rotating shaft at the end of the limiting strip 17-3. The two ends of the torsion spring 17-5 are fixedly connected to the top surface of the upper mounting box 2 and the side wall of the limiting strip 17-3 by bolts, respectively.

[0051] Several mounting plates 18 are fixedly installed on the top surface of the upper mounting box 2. Magnets 19 are fixedly installed on each mounting plate 18 by bolts, and the magnets 19 are magnetically attracted to the limiting strip 17-3. The magnets 19 facilitate the fixing of the limiting strip 17-3 during the installation of the upper mounting box 2, preventing the torsion spring 17-5 from rebounding. Several actuation grooves are integrally formed on the side wall of the limiting strip 17-3. The actuation grooves facilitate the adjustment of the limiting strip 17-3.

[0052] With the above technical solution design, when the upper mounting box 2 is installed on the lower mounting box 1, the fixing rod 17-1 is inserted into the upper mounting box 2, and then the torque of the torsion spring 17-5 tightly locks the buckle 17-4 on the limiting strip 17-3 into the inside of the annular groove 17-2, thereby limiting the fixing rod 17-1 and ensuring that the upper mounting box 2 and the lower mounting box 1 do not separate.

[0053] Example 3:

[0054] See as Figure 1-6 As shown, based on Embodiment 1, the support adjustment mechanism 20 includes:

[0055] Mounting rod 20-1 is vertically fixed on the side wall of the lower mounting box 1 by bolts, and a square groove 20-2 is provided in the middle of the mounting rod 20-1;

[0056] The internal threaded sleeve 20-3 has one end rotatably fitted onto the end of the mounting rod 20-1 via a bearing;

[0057] The adjusting screw 20-4 has one end of the adjusting threaded rod 11 inserted into the inner threaded sleeve 20-3 by threaded rotation. The inner end of the adjusting screw 20-4 is fixedly connected to a square rod 20-5 by bolts. The square rod 20-5 is movably inserted into the square groove 20-2.

[0058] The support foot 20-6 is located at the end of the adjusting threaded rod 11. Several conical heads 21 are fixedly welded to the side wall of the support foot 20-6. The conical heads 21 increase the support grip between the support foot 20-6 and the side wall of the cable well 4. The end face of the support foot 20-6 is rotatably connected to the end of the adjusting screw 20-4 through a ball joint bearing 22. The ball joint bearing 22 facilitates the adjustment of the angle of the support foot 20-6, making it suitable for different cable well 4 walls.

[0059] Through the above technical solution design, rotating the internal threaded sleeve 20-3, since the adjusting screw 20-4 is connected to the internal threaded sleeve 20-3 through the thread, and due to the guiding and limiting effect of the square rod 20-5 and the square groove 20-2, the internal threaded sleeve 20-3 drives the adjusting screw 20-4 to perform telescopic movement, so that the support foot 20-6 abuts against the inner wall of the cable well 4; and fixes the lower mounting box 1.

[0060] The specific models of the drive motor 12, smoke detector 6, temperature detector 7, buzzer 16, and warning light strip 15 are purchased directly from the market and installed according to the usage requirements.

[0061] When using this invention, during device installation, the lower mounting box 1 is placed below the cable connector. Then, the box fixing mechanism 17 is adjusted, and the internal threaded sleeve 20-3 is rotated. Since the adjusting screw 20-4 is connected to the internal threaded sleeve 20-3 through threads, and due to the guiding and limiting effect of the square rod 20-5 and the square groove 20-2, the internal threaded sleeve 20-3 drives the adjusting screw 20-4 to extend and retract, so that the support foot 20-6 abuts against the inner wall of the cable well 4; thus fixing the lower mounting box 1.

[0062] When the cable joint explodes, the smoke detector 6 and temperature detector 7 detect the instantaneous change in smoke concentration and temperature inside the explosion-proof box. At this time, the drive motor 12 is turned on, and the drive motor 12 drives the threaded rod 11 to rotate, which in turn drives the moving frame 9 to move upward on the guide rail 10. This, in turn, drives the lifting frame 13 to move upward through the connecting rod 14. The lifting frame 13 lifts the manhole cover 5, and the warning light strip 15 and the buzzer 16 emit warning light and warning sound to provide location information to maintenance personnel and safety warnings to pedestrians.

[0063] The beneficial effects of this specific embodiment after adopting the above structure are as follows:

[0064] 1. The installation of the upper mounting box 2, the lower mounting box 1, and the explosion-proof box 8 seals the cable joints inside the cable well 4 within the three boxes, enabling more accurate detection of explosions at the cable joints and effectively preventing damage to equipment and personnel inside and outside the cable well 4 from explosions, thus ensuring the safety of the cable well 4.

[0065] 2. The lifting frame 13 allows the manhole cover 5 to be lifted a certain distance when the smoke detector 6 and temperature detector 7 detect an explosion. The warning light strip 15 and buzzer 16 on the lifting frame 13 will then provide an open-air alarm, which will alert maintenance personnel and pedestrians and make it easier for maintenance personnel to find the explosion point more quickly and efficiently.

[0066] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. An explosion alarm device for intermediate joints in cable wells, characterized in that: It includes a lower mounting box (1) and an upper mounting box (2). The upper mounting box (2) is provided on the upper side of the lower mounting box (1), and the cable connector in the cable well (4) is passed through the cable groove (3) opened on the lower mounting box (1) and the upper mounting box (2); a well cover (5) is provided on the upper side of the cable well (4); a smoke detector (6) and a temperature detector (7) are fixedly installed on the top surface of the upper mounting box (2), and the probes of the smoke detector (6) and the temperature detector (7) are both located inside the upper mounting box (2); Explosion-proof enclosure (8), there are two explosion-proof enclosures (8), which are respectively fixedly embedded in the upper mounting box (2) and the lower mounting box (1), and a wire groove (3) is provided on the side wall of the explosion-proof enclosure (8). Box fixing mechanism (17), there are several box fixing mechanisms (17), and they are respectively set at the four corners of the upper mounting box (2) and the lower mounting box (1); Support adjustment mechanism (20), there are several support adjustment mechanisms (20), and they are symmetrically arranged on the front and rear side walls of the lower mounting box (1). The outer end of the support adjustment mechanism (20) is set to abut against the inner side wall of the cable well (4). A movable frame (9) is movably disposed inside the cable well (4). The left and right side walls of the movable frame (9) are slidably disposed on guide rails (10) disposed on the inner side wall of the cable well (4). A threaded rod (11) is rotatably disposed on the rear side of the movable frame (9) by means of a threaded rotation. The threaded rod (11) is rotatably disposed on the rear side wall inside the cable well (4) by means of a bearing seat. The lower end of the threaded rod (11) is fixedly connected to the output end of a drive motor (12). The drive motor (12) is fixedly disposed on the inner side wall of the cable well (4) by means of a motor bracket. The drive motor (12) is connected to an external power source. The lifting frame (13) is fixedly installed above the movable frame (9) by a connecting rod (14). The position of the lifting frame (13) is matched with the manhole cover (5). Warning light strips (15) and buzzers (16) are fixedly embedded on the side walls of the lifting frame (13), and the warning light strips (15) and buzzers (16) are connected to an external power source.

2. The explosion alarm device for intermediate joints in cable wells according to claim 1, characterized in that: The aforementioned housing fixing mechanism (17) includes: The fixing rod (17-1) is vertically fixed on one corner of the top surface of the lower mounting box (1). The upper end of the fixing rod (17-1) is provided with an annular groove (17-2). After the upper end of the fixing rod (17-1) moves through the side wall of the upper mounting box (2), it is exposed on the top surface of the upper mounting box (2). The limiting strip (17-3) is rotatably mounted on the top surface of the upper mounting box (2) via a rotating shaft and bearing. The limiting strip (17-3) is movably locked inside the annular slot (17-2) through a slot (17-4) opened on it. Torsion spring (17-5) is sleeved on the pivot at the end of the limiting strip (17-3). The two ends of the torsion spring (17-5) are fixedly connected to the top surface of the upper mounting box (2) and the side wall of the limiting strip (17-3), respectively.

3. The cable well intermediate joint explosion alarm device according to claim 2, characterized in that: Several mounting plates (18) are fixedly installed on the top surface of the upper mounting box (2). Magnets (19) are fixedly installed on each of the mounting plates (18), and the magnets (19) are magnetically attracted to the limiting strips (17-3).

4. The explosion alarm device for intermediate joints in cable wells according to claim 2, characterized in that: The side wall of the limiting strip (17-3) has several actuation grooves integrally formed.

5. The explosion alarm device for intermediate joints in cable wells according to claim 1, characterized in that: The support adjustment mechanism (20) includes: Mounting rod (20-1), which is vertically fixed on the side wall of the lower mounting box (1), and a square groove (20-2) is provided in the middle of the mounting rod (20-1). An internally threaded sleeve (20-3) is provided, with one end of which is rotatably fitted onto the end of the mounting rod (20-1) via a bearing. An adjusting screw (20-4) is provided. One end of the adjusting screw (20-4) is inserted into the inside of the internal threaded sleeve (20-3) by rotating it through a thread. A square rod (20-5) is fixedly connected to the inner end of the adjusting screw (20-4). The square rod (20-5) is movably inserted into the square groove (20-2). Support foot (20-6), which is located at the end of the adjusting screw (20-4).

6. The explosion alarm device for intermediate joints in cable wells according to claim 5, characterized in that: Several conical heads (21) are fixedly installed on the side wall of the support foot (20-6).

7. The explosion alarm device for intermediate joints in cable wells according to claim 5, characterized in that: The end face of the support foot (20-6) is rotatably connected to the end of the adjusting screw (20-4) via a ball joint bearing (22).

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