阅读说明：本技术 一种电缆沟及电缆沟排水系统 (Cable trench and cable trench drainage system ) 是由 宋继伟 邵可欣 梁鑫 王海静 梁康 于 2021-08-02 设计创作，主要内容包括：本发明提供了一种电缆沟及电缆沟排水系统,属于电力设施技术领域,包括电缆沟本体、排水通道和集水井,所述电缆沟本体包括电缆沟、若干电缆支架和电缆沟盖板,所述电缆支架设置在所述电缆沟侧壁上,所述电缆沟盖板设置在所述电缆沟上部,所述排水通道包括进水段、弯管段和出水段,所述进水段一端与所述电缆沟底部连通,所述进水段另一端与所述弯管段一端连通,所述弯管段另一端与所述出水段一端连通,所述出水段另一端与所述集水井侧壁连通,所述集水井侧壁与所述出水段连通的位置上设置防倒流装置。本发明密封性好、电缆分层分支排布、可以有序排列便于敷设检修,同时设置防倒流排水系统,减少电缆沟内积水,避免电缆受潮损坏。(The invention provides a cable trench and a cable trench drainage system, which belong to the technical field of electric power facilities and comprise a cable trench body, a drainage channel and a water collection well, wherein the cable trench body comprises a cable trench, a plurality of cable supports and a cable trench cover plate, the cable supports are arranged on the side wall of the cable trench, the cable trench cover plate is arranged on the upper part of the cable trench, the drainage channel comprises a water inlet section, a bent pipe section and a water outlet section, one end of the water inlet section is communicated with the bottom of the cable trench, the other end of the water inlet section is communicated with one end of the bent pipe section, the other end of the bent pipe section is communicated with one end of the water outlet section, the other end of the water outlet section is communicated with the side wall of the water collection well, and an anti-backflow device is arranged at the position where the side wall of the water collection well is communicated with the water outlet section. The cable trench has the advantages of good sealing performance, layered and branched arrangement of cables, ordered arrangement and convenience in laying and maintenance, and meanwhile, the backflow-preventing drainage system is arranged, so that accumulated water in the cable trench is reduced, and the cables are prevented from being damped and damaged.)

1. The utility model provides a cable pit and cable pit drainage system which characterized in that: including cable pit body, drainage channel and collecting well, the cable pit body includes cable pit, a plurality of cable support and cable trench cover, the cable support sets up on the cable pit lateral wall, the cable trench cover sets up cable pit upper portion, drainage channel is including the section of intaking, bend section and play water section, the section one end of intaking with cable pit bottom intercommunication, the section other end of intaking with bend section one end intercommunication, the bend section other end with play water section one end intercommunication, go out the water section other end with collecting well lateral wall intercommunication, the collecting well lateral wall with set up anti-backflow device on the position of play water section intercommunication.

2. The cable trench and cable trench drainage system of claim 1, wherein: the backflow prevention device comprises two fixed plates, a rotary drum, two movable plates and a baffle, one end of each fixed plate is fixedly connected with the inner side wall of the water collecting well, the other end of each fixed plate is hinged to the central shaft of the rotary drum, the upper end of each movable plate is hinged to the central shaft of the rotary drum, and the lower end of each movable plate is connected with the upper end of the baffle.

3. The cable trench and cable trench drainage system of claim 2, wherein: one side of the baffle is attached to the inner wall of the water collecting well, the other side of the baffle is an arc surface, and the area of the contact surface of the baffle and the water collecting well is larger than that of the contact surface of the water outlet section and the inner wall of the water collecting well.

4. The cable trench and cable trench drainage system of claim 1, wherein: the cable support comprises a first supporting rod, a second supporting rod and a plurality of branches, the first supporting rod is fixedly connected with the second supporting rod to form a Y-shaped structure, and the plurality of branches are fixedly connected with the first supporting rod and the second supporting rod to form a cable placing area.

5. The cable trench and cable trench drainage system of claim 4, wherein: the cable support is made of SMC composite materials.

6. The cable trench and cable trench drainage system of claim 1, wherein: the cable trench cover upper surface is the arc, cable trench cover both ends bottom sets up first recess and first sand grip respectively the symmetry.

7. The cable trench and cable trench drainage system of claim 6, wherein: and the two sides of the top of the cable trench are symmetrically provided with a second groove and a second raised strip respectively.

8. The cable trench and cable trench drainage system of claim 7, wherein: the first groove is matched with the second convex strip, the first convex strip is matched with the second groove, and the cable trench cover plate is fixedly connected with two sides of the top of the cable trench through a fixing piece.

9. The cable trench and cable trench drainage system of claim 8, wherein: the cable pit bottom with it sets up the filter screen to intake section intercommunication position, the height of cable pit bottom is higher than go out the water section with the height of sump pit intercommunication position.

10. The cable trench and cable trench drainage system of claim 9, wherein: the waterproof layer is arranged on the inner wall of the cable trench and is made of waterproof paint in a brushing mode.

Technical Field

The invention relates to the technical field of electric power facilities, in particular to a cable trench and a cable trench drainage system.

Background

With the continuous deepening of the transformation and construction of the power grid in China, the power cable is widely applied. The power cable can effectively reduce the workload of operation and maintenance, greatly improve the reliability of power supply and ensure the operation safety of national power grids. At present, a cable trench laying scheme is widely adopted in a transformer substation, and the cable trench laying method has the advantages of simple building structure, few additional supporting facilities such as technical defense and the like, low engineering investment, high economical efficiency and the like. However, because the power cable runs underground for a long time, the operating environment of the power cable is high in humidity, the environment in the trench is relatively closed, moisture cannot be discharged, the support in the trench is corroded, and the cable insulation is reduced. If the transformer substation is located in a low-lying area or an area with high water content in soil, water in the soil can permeate into a cable trench of the transformer substation, rainwater flows backward due to the low-lying area, accumulated water is easily formed in the trench, the cable is soaked in water for a long time, the cable is easily subjected to a water branch effect, the cable insulation fault is caused, a power grid accident is caused, and the operation safety of a power grid is seriously influenced.

The patent with the publication number of CN112234569A discloses a circular type drainage dehumidification cable pit, and it includes first cable pit, second cable pit, first intercommunication ditch, second intercommunication ditch, fan, first dehumidifier, second dehumidifier, switch board, smoke transducer, humidity transducer and temperature sensor, and interval distribution about first cable pit and the second cable pit, first cable pit front portion and second cable pit front portion are through first intercommunication ditch intercommunication. The air circulation accelerating device is reasonable and compact in structure and convenient to use, and through the arrangement of the four fans, air in the annular groove formed by sequentially conducting the first cable trench, the first communicating trench, the second cable trench and the second communicating trench is accelerated to circulate, so that the overhigh temperature of the air in the first cable trench and the second cable trench is avoided; through setting up first dehumidifier and second dehumidifier, avoid air humidity too high in first cable pit and the second cable pit, have safe, high-efficient and stable characteristics, but whole dehumidification process mainly relies on sensor and dehumidifier, does not consider the drainage problem in the cable pit, only adapts to more humid environment, can not guarantee in time to discharge when the ponding is more in the cable pit, still can cause cable bubble water.

The patent with publication number CN112054469A discloses a modular cable trench system capable of automatically draining water, which comprises a modular cable trench, a rainfall monitoring device, a water level monitoring device, a control device and a drainage device; the rainfall monitoring device is used for monitoring the rainfall within a set range around the modular cable trench to obtain monitoring data and sending the monitoring data to the control device; the water level monitoring device is arranged on the side wall of the modular cable trench and used for acquiring the water level height inside the modular cable trench and sending the water level height to the control device; the drainage device is used for pumping accumulated water in the cable trench to a set position; the control device is used for judging whether to start the drainage device according to the monitoring data and the water level height. The automatic drainage device realizes automatic drainage of accumulated water in the cable trench. The influence on the service life of the cable caused by excessive accumulated water in the cable trench is avoided, but the accumulated water cannot be rapidly discharged when the rainfall is too large or the accumulated water in the cable trench is too much in an emergency.

Disclosure of Invention

In view of the above, the present invention provides a cable trench and a cable trench drainage system, in which a drainage channel and a collection well are provided to drain accumulated water in the cable trench into the collection well, and a backflow prevention device is provided to achieve dry-wet separation and prevent accumulated water in the cable trench.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a cable pit and cable pit drainage system, includes cable pit body, drainage channel and collecting well, the cable pit body includes cable pit, a plurality of cable support and cable pit apron, the cable support sets up on the cable pit lateral wall, the cable pit apron sets up cable pit upper portion, drainage channel is including the section of intaking, bend section and go out the water leg, the section one end of intaking with cable pit bottom intercommunication, the section other end of intaking with bend section one end intercommunication, the bend section other end with go out water leg one end intercommunication, go out the water leg other end with collecting well lateral wall intercommunication, the collecting well lateral wall with set up anti-reflux unit on the position of going out the water leg intercommunication.

Furthermore, the backflow prevention device comprises two fixed plates, a rotating drum, two movable plates and a baffle, one end of each fixed plate is fixedly connected with the inner side wall of the water collecting well, the other end of each fixed plate is hinged to the central shaft of the corresponding rotating drum, the upper end of each movable plate is hinged to the central shaft of the corresponding rotating drum, and the lower end of each movable plate is connected with the upper end of the corresponding baffle.

Furthermore, one side of the baffle is attached to the inner wall of the water collecting well, the other side of the baffle is an arc surface, and the area of the contact surface of the baffle and the water collecting well is larger than that of the contact surface of the water outlet section and the inner wall of the water collecting well.

Further, the cable support includes first bracing piece, second bracing piece and a plurality of branch, first bracing piece with second bracing piece fixed connection forms Y style of calligraphy structure, a plurality of branches with first bracing piece with second bracing piece fixed connection forms the cable and places the district.

Further, the cable support is made of SMC composite materials.

Further, cable trench cover upper surface is the arc, cable trench cover both ends bottom sets up first recess and first sand grip respectively the symmetry.

Furthermore, both sides of the top of the cable trench are symmetrically provided with a second groove and a second raised line respectively.

Further, first recess with second sand grip looks adaptation, first sand grip with second recess looks adaptation, cable trench cover pass through the mounting with cable trench top both sides fixed connection.

Furthermore, the bottom of the cable trench and the water inlet section are communicated and provided with a filter screen, and the bottom of the cable trench is higher than the water outlet section and the water collecting well.

Furthermore, the inner wall of the cable trench is provided with a waterproof layer, and the waterproof layer is made of waterproof paint by painting.

For a power grid, safety and stability are basic requirements for normal operation of the power grid, power supply equipment is used as an indispensable element in a power supply system, the operation state of the power supply equipment directly influences the stability and the safety of the power system, once a fault occurs, normal power supply to a user is influenced, huge economic loss is caused, and serious accidents such as power grid collapse and large-area power failure can be caused in severe cases.

The cable is used as a transmission channel between power equipment, and the working environment of the cable directly influences the safety and stability of the power transmission process.

The cable trench is an important facility for protecting equipment such as cables, a plurality of cables are often distributed in parallel in the cable trench, in order to protect the cables in the cable trench, a common method at present is to lay a cover plate on the cable trench to place some solid sundries or animals such as rats, snakes and the like into the cable trench, but the current cable trench is excavated downwards on the ground, and no effective waterproof facility is available at present, so that in use, water accumulation is extremely easy to occur in the cable trench, the positions and depths of the water accumulation are not fixed, the depth of the water accumulation is often shallow, and the amount of the water accumulation is small, so that the shallow water accumulation in the cable trench cannot be cleaned by the traditional water pump drainage method, and power equipment such as cables and the like is easily subjected to insulation grade reduction or even failure under a high-humidity environment for a long time, so as to cause power supply accidents, even serious equipment and personal accidents, therefore, the premise of ensuring the safe operation of the cable is to solve the drainage problem of the cable trench.

At present, water is pumped into the cable trench through a water pumping device commonly used, the cable trench is complex in operation due to the fact that a large number of cables are laid, a cover plate needs to be opened when water is pumped every time, and when the cable trench is in a rainy season, if the cable trench is not checked timely, water can easily soak in the cable, accidents caused by damage of the cable are caused, and passivity is large for maintainers, so that the method has positive significance for solving the problem of water accumulation in the cable trench by actively discharging accumulated water in the cable trench through a system per se and is a direction worthy of research, and therefore the method has the starting point of how to achieve autonomous water discharge of the cable trench without excessively depending on a detection tool or power equipment.

The invention has the beneficial effects that: according to the invention, the drainage channel and the water collection well are arranged, accumulated water in the cable trench can be drained into the water collection well in time, accumulated water in the cable trench is avoided, the drainage channel is provided with the bent pipe section, odor in the water collection well can be prevented from returning, a better working environment can be provided when a worker opens the cable trench cover plate to enter the cable trench for operation, and meanwhile, the backflow prevention device is arranged on the inner wall of the water collection well, so that the accumulated water in the water collection well can be prevented from flowing backwards to enter the cable trench to cause accumulated water in the cable trench when reaching a certain depth.

In addition, the filter screen is arranged at the joint of the bottom of the cable trench and the drainage channel, so that the phenomenon that foreign matters enter the drainage channel to cause channel blockage and influence the drainage effect is avoided, and the waterproof coating is coated on the inner wall of the cable trench, so that the leakage of underground water can be reduced to a certain extent, and the environment in the cable trench is wet.

In addition, cable support adopts the Y font structure, fixed setting and cable pit inner wall formation triangle-shaped stable structure on the cable pit inner wall, set up the cable simultaneously and place the district and make the cable can lay alone by the layering, avoid the mutual contact between the cable, can effectively dispel the heat at cable work, and the layering is laid neatly orderly, can find the cable that needs overhauld fast when needs are overhauld, improve work efficiency, avoid the cable winding local high fire that arouses together of temperature.

In addition, the upper surface of the cable trench cover plate adopts an arc surface to form an arch structure, the arch structure has strong structural stability and can bear large pressure, the cover plate is usually arranged outdoors, and people and vehicles can reduce the damage to the cable trench cover plate when passing through, so that the service life is prolonged.

In addition, cable trench cover both ends bottom and cable trench top bilateral symmetry adaptation set up recess and sand grip, make cable trench cover and cable trench detain mutually and, on the one hand can prevent that the rainwater from getting into in the cable trench, on the other hand makes cable trench cover and cable trench connect more closely, is difficult for taking place the displacement.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a partially enlarged view of the position a in the present invention.

Fig. 3 is a schematic structural view of the cable holder of the present invention.

Fig. 4 is a partial structural view of one end of the cable trench cover according to the present invention.

Fig. 5 is a partial structural view of one side of the top of the cable trench of the present invention.

Wherein: 1-cable trench body, 2-cable trench cover, 3-water collecting well, 4-water collecting well cover, 5-cable support, 6-drainage channel, 7-first convex strip, 8-first groove, 9-fixing piece, 10-filter screen, 11-cable trench, 12-water inlet section, 13-waterproof layer, 14-bent pipe section, 15-water outlet section, 16-backflow prevention device, 17-drainage pipe, 18-water pump, 19-baffle, 20-fixing plate, 21-rotary drum, 22-cable placing area, 23-cable, 24-first support rod, 25-second support rod, 26-branch, 27-second convex strip, 28-second groove and 29-movable plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 5 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

Example one

As shown in fig. 1-5, this embodiment provides a cable trench and a cable trench drainage system, which includes a cable trench body 1, a drainage channel 6 and a water collection well 3, where the cable trench body 1 includes a cable trench 11, a plurality of cable brackets 5 and a cable trench cover 2, the cable brackets 5 are disposed on the side wall of the cable trench 11, the cable trench cover 2 is disposed on the upper portion of the cable trench 11, the drainage channel 6 includes a water inlet section 12, a pipe bending section 14 and a water outlet section 15, one end of the water inlet section 12 is communicated with the bottom of the cable trench 11, the other end of the water inlet section 12 is communicated with one end of the pipe bending section 14, the other end of the pipe bending section 14 is communicated with one end of the water outlet section 15, the other end of the water outlet section 15 is communicated with the side wall of the water collection well 3, the bottom of the cable trench 11 is higher than the position where the water outlet section 15 is communicated with the water collection well 3, can in time discharge into sump pit 3 with the ponding of 11 bottoms of cable pit through drainage channel 6 in, avoid cable pit 11 interior ponding, can effectively play through setting up bend section 14 and prevent returning smelly effect, thereby avoid cable pit 11 to cause the stimulation to the maintainer because of long-term inside air of shutoff is dazzled, 3 lateral walls of sump pit with set up anti-reflux device 16 on the position of play water section 15 intercommunication, prevent that 3 interior waters of sump pit from pouring backward into in the cable pit 11 when higher.

In the invention, the backflow prevention device 16 comprises two fixed plates 20, a rotating drum 21, two movable plates 29 and a baffle plate 19, one end of each fixed plate 20 is fixedly connected with the inner side wall of the water collecting well 3, the other end of each fixed plate 20 is hinged with the central shaft of the rotating drum 21, the upper end of each movable plate 29 is hinged with the central shaft of the corresponding rotating drum 21, the lower end of each movable plate 29 is connected with the upper end of the corresponding baffle plate 19, one side of each baffle plate 19 is attached to the inner wall of the water collecting well 3, the other side of each baffle plate 20 is a cambered surface, the area of the contact surface between each baffle plate 20 and the water collecting well 3 is larger than that between each water outlet section 15 and the inner wall of the water collecting well 3, when accumulated water enters the water collecting well 3 through the drainage channel 6, the baffle plate 19 is separated from the inner wall of the water collecting well 3 under the action of water flow, the accumulated water is drained into the water collecting well 3, and the baffle plate 19 is attached to the inner wall of the water collecting well 3 under the non-drainage state, when the water level in the water collecting well 3 is higher than the bottom of the drainage channel 6, the baffle 19 is tightly attached to the inner wall of the water collecting well 3 due to the pressure of water, and the cambered surface structure enables the pressure of the water on the baffle 20 to be larger, so that the effect of preventing the water flow from flowing backwards is achieved.

In the invention, the cable support 5 comprises a first support rod 24, a second support rod 25 and a plurality of branches 26, the first support rod 24 and the second support rod 25 are fixedly connected to form a Y-shaped structure, the whole structure is more stable, the plurality of branches 26, the first support rod 24 and the second support rod 25 are fixedly connected to form a cable placing area 22, cables can be laid separately in layers, mutual contact between the cables is avoided, effective heat dissipation can be carried out when the cables work, the cables can be laid in layers orderly, when maintenance is needed, the cables needing to be maintained can be found quickly, the work efficiency is improved, and fire caused by the fact that the cables are wound together and the local temperature is too high is avoided.

In the invention, the cable support 5 is made of SMC composite material, the SMC composite material has the advantages of high strength, light weight, smooth surface of a product, small friction coefficient, no damage to a cable, integral insulation, no electric corrosion, capability of preventing generation of eddy current, good water resistance, long-term use in damp or water, heat resistance and cold resistance. The fireproof support has excellent fireproof performance, can be used at the temperature of between 50 ℃ below zero and 130 ℃ below zero, is corrosion-resistant, does not rust, has long service life, is maintenance-free, has no recycling value of materials, can prevent the occurrence of theft, has good insulating performance, does not need to be grounded, and can reduce the workload of installation labor.

According to the cable trench cover plate, the upper surface of the cable trench cover plate 2 is arc-shaped to form an arch structure, the arch structure has strong structural stability and can bear large pressure, the cover plate is usually arranged outdoors, damage to the cable trench cover plate 2 can be reduced when people and vehicles pass through the cover plate, and the service life is prolonged.

In the invention, the bottoms of the two ends of the cable trench cover plate 5 are respectively symmetrically provided with a first groove 8 and a first raised strip 7, the two sides of the top of the cable trench 11 are respectively symmetrically provided with a second groove 28 and a second raised strip 27, the first groove 8 is matched with the second raised strip 27, and the first raised strip 7 is matched with the second groove 28, so that the cable trench cover plate 5 and the cable trench 11 are buckled, on one hand, rainwater can be prevented from entering the cable trench 11, on the other hand, the cable trench cover plate 5 and the cable trench 11 are more tightly connected and are not easy to displace, and the cable trench cover plate 2 is fixedly connected with the two sides of the top of the cable trench 11 through a fixing part 9.

In the invention, the waterproof layer 13 is arranged on the inner wall of the cable trench 11, and the waterproof layer 13 is made by painting waterproof paint, so that the leakage of underground water can be reduced to a certain extent, and the environment in the cable trench 11 is humid.

Example two

The embodiment is the improvement of making on the basis of embodiment one, in embodiment one in ponding discharge enter the well 3 back mainly through the recharge get into soil, generally need not artificial intervention, but when being in rainy season or comparatively low-lying department, there is the potential safety hazard of certain degree when the water level is too high in the well 3, set up apron 4 at the well head of well 3, prevent unexpected drop into, set up drain pipe 17 and suction pump 18 at the well head of well 3 in addition, regularly outwards pump drainage to the ponding in the well 3, avoid ponding too much, can add the fluviograph to observe when necessary.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.