CN-121976567-A - Modular plugging device for portable construction of cable trench

Abstract

The invention discloses a modular plugging device for portable construction of a cable trench, which comprises plugging elements, wherein the plugging elements are stacked to form a plugging unit, a cable adapting piece is arranged on the stacking surface of the plugging elements, the cable adapting piece is enclosed to form a cable body channel after the adjacent plugging elements are stacked, a positioning guide element penetrates through the plugging unit to realize integral positioning and guiding, the adjacent plugging elements are fixedly connected through a locking piece to form a plugging wall body, a detachable and reconfigurable modular design is adopted, and a guide rod penetrates through a positioning and screw locking assembly mode is matched, so that the plugging structure is assembled and disassembled simply and conveniently and efficiently like building blocks, and a pure mechanical automatic fire extinguishing mechanism for fuse temperature-sensitive triggering and torsion spring mechanical firing is designed without external power supply and manual intervention. The rapid suppression and the extinguishment of the fire are realized, the gap that the traditional plugging technology lacks an active fire extinguishing function is filled, and the operation safety of the cable trench is greatly improved.

Inventors

• SUN JIANGSHAN
• PU JUNMING
• LUO YONGJUN
• WANG BIN
• CHEN FEIJIAN
• YANG HAO
• Zhao Yangxuwei
• Luo Tingsha
• WANG RUISONG
• LI BO
• Lv Yuanshuang
• FAN GUOSHENG
• Lu Jinggan
• XIA CHAOYU
• WANG YUEFEI
• JIANG ZHENGQUAN
• YAN LIHENG

Assignees

• 贵州电网有限责任公司

Dates

Publication Date

20260505

Application Date

20251223

Claims (10)

1. 1. A modular plugging device for portable construction of a cable trench is characterized by comprising, The plugging device comprises plugging elements (1), wherein the plugging elements (1) are stacked to form a plugging unit (11), a cable adapting piece (12) is arranged on the stacking surface of the plugging elements (1), and the cable adapting piece (12) is enclosed to form a cable body (13) channel after the adjacent plugging elements (1) are stacked; the positioning guide element (2), the positioning guide element (2) penetrates through the plugging unit (11) to realize integral positioning and guiding, the adjacent plugging elements (1) are fixedly connected through the locking piece (21) to form a plugging wall body, and Fire extinguishing element (3), fire extinguishing element (3) include fire extinguishing spare (31) and trigger mechanism (32), fire extinguishing spare (31) set up in shutoff element (1), trigger mechanism (32) with fire extinguishing spare (31) linkage is used for triggering when cable pit takes place thermal anomaly fire extinguishing spare (31) start.
2. 2. The modular plugging device for convenient construction of a cable trench according to claim 1, wherein the plugging unit (11) comprises a plugging isolation module (111) and a plugging branching module (112), the plugging isolation module (111) and the plugging branching module (112) are stacked to form the plugging unit (11), and the plugging branching module (112) is located at the bottom end of the plugging isolation module (111).
3. 3. The modular plugging device for convenient construction of the cable trench according to claim 2, wherein the cable adapting member (12) comprises cable pressing grooves (121) arranged on the upper surface and the lower surface of the plugging isolation module (111) and the plugging branching module (112), and the cable pressing grooves (121) are enclosed to form a cable through hole after the plugging isolation module (111) and the plugging branching module (112) are overlapped.
4. 4. The modular plugging device for convenient construction of the cable pit according to claim 3, wherein the outer walls of the plugging isolation module (111) and the plugging branching module (112) are provided with a plurality of weight-reducing hollows (113), an inner cavity (114) is arranged in the plugging isolation module (111), and the inner cavity (114) is of a through structure and is used for diffusing aerosol fire extinguishing medium to form a closed fire extinguishing space.
5. 5. The modular plugging device for portable construction of the cable trench of claim 4, wherein the plugging isolation module (111) and the plugging and branching module (112) are integrally molded by adopting an epoxy resin material, the cable pressing grooves (121) are arc-shaped structures, and a plurality of groups of the cable pressing grooves (121) are uniformly distributed along the length direction of the plugging and branching module (112).
6. 6. The modular plugging device for convenient construction of a cable trench according to claim 5, wherein the positioning guide element (2) comprises a guide rod (22) arranged at the top end of the plugging isolation module (111), the guide rod (22) is of a cylindrical structure, the tops of the plugging isolation module (111) and the plugging branching module (112) are provided with jacks matched with the guide rod (22), and the guide rod (22) is inserted into the jacks to ensure vertical alignment during module stacking.
7. 7. The modular plugging device for convenient construction of the cable pit according to claim 6, wherein the locking piece (21) comprises screw reserved hole sites (211) arranged on the front side wall and the rear side wall of the plugging isolation module (111) and the plugging branching module (112), and the screw reserved hole sites (211) are matched with the screw body to realize transverse locking and fixing of the adjacent modules.
8. 8. The modular plugging device for convenient construction of the cable pit according to claim 7, wherein the triggering mechanism (32) comprises a fuse wire (321) arranged on the side walls of the plugging isolation module (111) and the plugging branching module (112), a torsion spring mounting groove (322) is formed in the side wall of the plugging isolation module (111), and a torsion spring body (323) is arranged in the torsion spring mounting groove (322).
9. 9. The modular plugging device for convenient construction of the cable pit according to claim 8, wherein a trigger baffle (324) is arranged in the torsion spring installation groove (322), and two ends of the trigger baffle (324) are connected with the torsion spring installation groove (322) and the torsion spring body (323); the fuse (321) is fixed on the outer side of the plugging branching module (112) through a fixing screw (212), and the fuse (321) and the trigger baffle (324) form locking fit, so that the trigger baffle (324) is kept at a preparation position in a normal state.
10. 10. The modular plugging device for portable construction of cable ducts according to claim 9, characterized in that said extinguishing member (31) comprises an aerosol fire extinguisher (311) arranged inside said plugging isolation module (111), said aerosol fire extinguisher (311) being provided with a mechanical trigger button (312) and a safety pull ring (313); The trigger baffle (324) corresponds to the mechanical trigger button (312), when the fuse wire (321) is heated and melted, the torsion spring body (323) drives the trigger baffle (324) to rebound to trigger the mechanical trigger button (312), and the safety pull ring (313) is used for preventing the aerosol fire extinguisher (311) from being triggered by mistake in the installation process.

Description

Modular plugging device for portable construction of cable trench Technical Field The invention relates to the field of fire safety, in particular to a modular plugging device for portable construction of a cable trench. Background With the high-speed development of the power system, newly built substations and reconstruction and extension projects are increasingly increased, cables are used as core carriers for power transmission, and the laying mode of the cables is widely adopted by a cable trench laying technology. In the long-term operation process of the cable trench, multiple requirements such as cable laying, maintenance, capacity expansion and the like need to be met, and the plugging treatment of the cable trench is a key link for guaranteeing the safe and stable operation of a power system. At present, the existing cable trench plugging technology mainly adopts modes of concrete brickwork plugging, fireproof bag stacking plugging and the like. The concrete brickwork shutoff forms the enclosed construction through cast in place or building by laying bricks on the one hand, though possessing certain structural stability, but have apparent defect, when the transformer substation is carried out the reconstruction and expansion and is needed to add the cable or demolish old cable, need to break to tear original concrete shutoff structure open, break open the process not only the construction degree of difficulty is big, inefficiency, but also very easily accidentally injure adjacent operation interval's cable, cause the security risk, and when the shutoff is again carried out after breaking open, it is difficult to guarantee shutoff compactness and original structural uniformity, lead to the shutoff quality to drop, unable effective barrier toy invasion, and fire behavior weakens by a wide margin. Although the fireproof package plugging mode improves the convenience in removing compared with concrete plugging, the plugging structure formed by stacking the fireproof package has poor integrity, more gaps, difficult formation of effective sealing and poor animal and fire prevention effect, and the fireproof package is easy to break and scatter after being removed and re-stacked for many times, so that the plugging performance is further attenuated, the recycling rate is low, and the construction cost and the waste treatment pressure are increased. The existing plugging technology only focuses on the basic plugging protection function, and lacks an active prevention and control design aiming at cable trench fire. The cable is intensive in the cable pit, in case cause the conflagration because of overload, short circuit etc. cause, the intensity of a fire very easily spreads fast, and traditional plugging structure can't restrain the intensity of a fire diffusion, and the conflagration is put out and is restricted by the narrow and small space of cable pit, and the degree of difficulty is very big, easily causes large tracts of land power failure accident, brings serious threat for the electric wire netting safe operation. Disclosure of Invention Therefore, the cable trench plugging technology has the technical defects of difficult disassembly and assembly, high construction risk, easy attenuation of plugging quality and lack of active fire extinguishing function. The technical problem is solved by the following technical scheme that the invention provides a modular plugging device for convenient construction of a cable trench, which comprises plugging elements, wherein the plugging elements are stacked to form a plugging unit, a cable adapting piece is arranged on the stacking surface of the plugging elements, and the cable adapting piece is enclosed to form a cable body channel after the adjacent plugging elements are stacked; The positioning guide element penetrates through the plugging unit to realize integral positioning and guiding, the adjacent plugging elements are fixedly connected through the locking piece to form a plugging wall body, and The fire extinguishing element comprises a fire extinguishing piece and a triggering mechanism, wherein the fire extinguishing piece is arranged in the plugging element, and the triggering mechanism is linked with the fire extinguishing piece and used for triggering the fire extinguishing piece to start when the cable duct is thermally abnormal. In one preferable mode of the modularized plugging device for portable construction of the cable trench, the plugging unit comprises a plugging isolation module and a plugging branching module, wherein the plugging isolation module and the plugging branching module are stacked to form the plugging unit, and the plugging branching module is positioned at the bottom end of the plugging isolation module. In one preferable mode of the modularized plugging device for portable construction of the cable pit, the cable adapting piece comprises cable pressing grooves arranged on the upper surface and the lower surface of the plu