CN112886525B

CN112886525B - Cable trench structure

Info

Publication number: CN112886525B
Application number: CN202110177836.9A
Authority: CN
Inventors: 曹雷; 邓如泳; 董定一; 郭孟凌; 李腹
Original assignee: Shenzhen Power Supply Bureau Co Ltd
Current assignee: Shenzhen Power Supply Bureau Co Ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2022-07-15
Anticipated expiration: 2041-02-08
Also published as: CN112886525A

Abstract

The invention relates to a cable trench structure. The cable trench structure includes: the cable pit, infiltration pipe, first reducing pipe, first floater, second reducing pipe, first baffle, second floater and alarm unit. The buoyancy of the groundwater reversely permeated into the first pipe section can enable the first floating ball to float upwards, so that the first floating ball blocks the upper end opening of the first reducing pipe, the groundwater can be prevented from continuously reversely permeating, and the cable can be protected from being corroded by the reversely permeated groundwater. Because first floater shutoff first reducing pipe's upper end opening, consequently, ponding in the cable pit also can't be discharged downwards through first reducing pipe's upper end opening, and then ponding can be stored in the top of first reducing pipe. The buoyancy of the accumulated water stored above the first reducer pipe can drive the second floating ball to float to the opening at the upper end of the second reducer pipe, so that the alarm unit is triggered to send out an alarm signal, a worker can find the reverse seepage condition of underground water in time, and meanwhile, the accumulated water in the cable trench can be early warned in time.

Description

Cable trench structure

Technical Field

The invention relates to the technical field of cable trench structures, in particular to a cable trench structure.

Background

In electrical facilities such as transformer substations, ring main units, distribution rooms and the like, cables are required to be buried in underground caverns. The cable trench is used as a laying carrier of cables and is important construction content in each capital construction project. When the accumulated water in the cable trench is excessive, the cable is easy to damage. In order to drain the cable trench, a water seepage pipe is usually buried at the bottom of the cable trench, and water in the cable trench can seep into the underground soil layer from the bottom of the water seepage pipe.

In coastal areas, the annual precipitation is large, and the underground water level is high. The underground water is easy to reversely seep from the seepage pipe and flows into the cable trench to damage the cable. Moreover, if the underground water reverse osmosis condition cannot be found in time, the risk that the cable is damaged is increased.

Disclosure of Invention

Based on this, it is necessary to provide one kind can prevent that groundwater from oozing to the cable pit and can in time discover the cable pit structure of the anti-circumstances of oozing to the problem that groundwater from oozing the pipe anti-infiltration to the cable pit easily and can not in time discover the anti-circumstances of oozing.

The embodiment of the application provides a cable pit structure, includes:

the cable trench is provided with a bottom wall and a plurality of side walls surrounding the bottom wall, and a channel is formed downwards from the bottom wall;

the water seepage pipe is arranged in the channel and communicated with the cable trench, the water seepage pipe comprises a first pipe section lower than the bottom wall and a second pipe section higher than the bottom wall, and the side wall of the second pipe section is of a hollow structure;

the first reducing pipe is arranged in the first pipe section and is coaxial with the water seepage pipe; the lower end of the first reducing pipe is mounted on the side wall of the first pipe section, and the upper end opening of the first reducing pipe is smaller than the lower end opening of the first reducing pipe;

the first floating ball is positioned in the first pipe section and can float upwards and block an upper end opening of the first reducing pipe under the action of buoyancy;

the second reducing pipe is arranged in the second pipe section and is coaxial with the water seepage pipe; the lower end of the second reducer pipe is mounted on the side wall of the second pipe section, and the opening at the upper end of the second reducer pipe is smaller than the opening at the lower end of the second reducer pipe;

the first partition plate is of a hollow structure and is positioned between the second reducing pipe and the first reducing pipe;

the second floating ball is positioned between the first partition plate and the second reducing pipe, and can float upwards under the action of buoyancy force and block an upper end opening of the second reducing pipe; and

the alarm unit is positioned outside the second reducer pipe; the second floating ball can trigger the alarm unit to send out an alarm signal when plugging the upper end opening of the second reducer pipe.

According to the cable trench structure, when groundwater reversely seeps from the bottom end of the seepage pipe, the buoyancy of the groundwater entering the first pipe section can enable the first floating ball to float upwards. When the first floating ball floats to the upper end opening of the first reducing pipe, the upper end opening of the first reducing pipe can be blocked, so that underground water can be prevented from continuously reverse osmosis, and a cable is protected from being corroded by reverse osmosis underground water. Because first floater shutoff first reducing pipe's upper end opening, consequently, ponding in the cable pit also can't be discharged downwards through first reducing pipe's upper end opening, and then ponding can be stored in the top of first reducing pipe. The buoyancy of the accumulated water stored above the first reducing pipe can drive the second floating ball to float upwards. When the second floating ball floats to the opening at the upper end of the second reducer pipe, the second floating ball can trigger the alarm unit to send out an alarm signal, so that a worker can find the reverse seepage condition of underground water in time, and can early warn accumulated water in a cable trench in time.

In one embodiment, the side wall of the first pipe section is a hollow structure.

In an embodiment, the first and/or second tube section is a bellows; the outer wall of bellows is equipped with a plurality of annular grooves along the axial interval arrangement in proper order, every annular groove's diapire is equipped with a plurality of through-holes along circumference interval arrangement in proper order.

In an embodiment, the cable trench structure further comprises a bottom plate arranged at the bottom end of the water seepage pipe, and the bottom plate is of a hollow structure.

In an embodiment, the cable trench structure further includes a ceramsite water seepage layer, the ceramsite water seepage layer is located below the bottom wall of the cable trench, and the ceramsite water seepage layer surrounds the first pipe section and the bottom plate.

In an embodiment, the cable trench structure further includes a cover plate disposed at an upper end of the second pipe section, and the cover plate is a hollow structure.

In one embodiment, the cover plate has a first region and a second region located at the periphery of the first region; the first area is of a solid structure, and the second area is of a hollow structure; the first area corresponds to an upper end opening of the second reducer pipe, and a projection of the outer surface of the second reducer pipe on the cover plate corresponds to the second area.

In one embodiment, the first separator has a third region and a fourth region located at a periphery of the third region; the third area is of a solid structure, and the fourth area is of a hollow structure; the third area corresponds to an upper end opening of the first reducer pipe, and a projection of the outer surface of the first reducer pipe on the first partition plate corresponds to the fourth area.

In one embodiment, the cable trench structure further comprises a relay located outside the second reducer pipe;

the second floating ball is a floating ball switch; the second floating ball is connected with the relay, and the relay is connected with the alarm unit;

when the second floating ball floats to block the opening at the upper end of the second reducer pipe, the relay can be triggered to act, so that the relay triggers the alarm unit to send out an alarm signal.

In one embodiment, the cable trench structure further comprises a pressure sensor and a controller; the pressure sensor is arranged on the inner wall of the upper end opening of the second reducer pipe;

when the pressure applied by the second floating ball to the pressure sensor reaches a preset threshold value, the controller can control the alarm unit to send out an alarm signal.

Drawings

FIG. 1 is a schematic view of a cable trench structure according to an embodiment;

fig. 2 is a schematic structural view of the cover plate in fig. 1.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when a portion is referred to as being "secured to" another portion, it can be directly on the other portion or there can be an intervening portion. When a portion is referred to as being "connected" to another portion, it can be directly connected to the other portion or intervening portions may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present disclosure provides a cable trench structure 100. The cable trench structure 100 includes: the cable trench 110, the water seepage pipe 120, the first reducer 131, the first float ball 132, the second reducer 141, the first partition 142, the second float ball 143 and the alarm unit 144.

The cable trench 110 has a bottom wall 111 and a plurality of side walls 112 surrounding the bottom wall 111, and a channel (not shown) is opened downward from the bottom wall 111.

Specifically, the cable trench 110 may be made of a concrete structure. The space enclosed by the bottom wall 111 and the plurality of side walls 112 is used for cabling (not shown). A support bracket (not shown) may be installed on the side wall 112 and have a height higher than the bottom wall 111. Then, the cable is laid on the support frame, so that the laying height of the cable can be higher than that of the bottom wall 111, and the cable is prevented from being corroded by water accumulated on the bottom wall 111.

The infiltration pipe 120 is installed in the passage and communicates with the cable trench 110. The permeate tube 120 comprises a first tube section 121 below the bottom wall 111 and a second tube section 122 above the bottom wall 111. The side wall of the second tube section 122 is a hollow structure.

Specifically, the water-permeable tube 120 may be inserted into the passage, and the water-permeable tube 120 is fitted to the passage. The bottom end of the water seepage pipe 120 is communicated with the soil layer 10, so that after accumulated water in the cable trench 110 enters the water seepage pipe 120, the accumulated water can seep into the soil layer 10 from the bottom end of the water seepage pipe 120, and then the accumulated water in the cable trench 110 can be discharged from the water seepage pipe 120.

In the present embodiment, the water seepage pipe 120 is divided into a first pipe section 121 and a second pipe section 122. The first pipe section 121 and the second pipe section 122 communicate with each other. The first tube segment 121 and the second tube segment 122 may be integrally formed or may be separately formed and then assembled together.

The first tube section 121 is lower than the bottom wall 111 of the cable trench 110. The second tube section 122 is higher than the bottom wall 111 of the cable trench 110. Because the side wall of the second pipe section 122 is of a hollow structure, when water is accumulated on the bottom wall 111 of the cable trench 110, the accumulated water can enter the second pipe section 122 through the hollow part of the side wall of the second pipe section 122, then flow downwards into the first pipe section 121 from the second pipe section 122, and then be discharged downwards from the first pipe section 121 and penetrate into the soil layer 10.

The first reducer pipe 131 is installed in the first pipe section 121 and is coaxially disposed with the infiltration pipe 120. The lower end of the first reducing pipe 131 is installed on the sidewall of the first pipe segment 121, and an upper end opening 1311 of the first reducing pipe 131 is smaller than a lower end opening 1312 of the first reducing pipe 131. The first float ball 132 is located on the first pipe segment 121 and can float up and block the upper end opening 1311 of the first reducer pipe 131 under the action of buoyancy.

Specifically, the first reducer pipe 131 is axially identical to the infiltration pipe 120. A first socket (not shown) may be installed in the sidewall of first pipe segment 121. The first socket extends in the circumferential direction of the first pipe section 121. The first socket piece is provided with a first annular slot. The first annular slot is matched with the lower end of the first reducer pipe 131. The first reducer pipe 131 can be installed in the first pipe section 121 by inserting the first reducer pipe 131 into the first annular insertion groove from above.

As shown in fig. 1, the diameter of the first reducing pipe 131 is gradually increased from top to bottom, and thus, an upper end opening 1311 of the first reducing pipe 131 is smaller than a lower end opening 1312 of the first reducing pipe 131. The first float ball 132 is located below the first reducer pipe 131.

When groundwater back seeps up from the bottom end of the infiltration pipe 120 and flows back to the first pipe section 121, the buoyancy of the water entering the first pipe section 121 will cause the first float 132 to float up. Since the lower end opening 1312 of the first reducing pipe 131 is large, the first float 132 can move upward through the lower end opening 1312 of the first reducing pipe 131. Until the first floating ball 132 floats to the upper end opening 1311 of the first reducer pipe 131, the upper end opening 1311 of the first reducer pipe 131 is smaller, so that the first floating ball 132 can block the upper end opening 1311 of the first reducer pipe 131, reverse seepage of underground water cannot continue flowing backwards through the upper end opening 1311 of the first reducer pipe 131, further underground water can be prevented from continuing reverse seepage, and a cable can be protected from being corroded by the reverse seepage of the underground water.

Specifically, a sealing rubber ring (not shown) may be disposed on an inner wall of the upper end opening 1311 of the first reducer pipe 131, so that when the first floating ball 132 blocks the upper end opening 1311 of the first reducer pipe 131, the sealing rubber ring can be tightly abutted, and the upper end opening 1311 of the first reducer pipe 131 can be reliably blocked, thereby improving sealing performance and preventing groundwater from continuously seeping back.

The second reducer pipe 141 is installed in the second pipe section 122 and coaxially disposed with the infiltration pipe 120. The lower end of the second reducer pipe 141 is mounted to the sidewall of the second pipe segment 122, and the upper end opening 1411 of the second reducer pipe 141 is smaller than the lower end opening 1412 of the second reducer pipe 141.

Specifically, the second reducer 141 is axially identical to the infiltration pipe 120. A second socket (not shown) may be mounted to the sidewall of the second tube segment 122. The second socket member extends in the circumferential direction of the second tubular section 122. The second socket piece is provided with a second annular slot. Which mates with the lower end of the second reducer 141. The second reducer pipe 141 can be installed in the second pipe segment 122 by inserting the second reducer pipe 141 into the second annular insertion groove from above.

As shown in fig. 1, the diameter of the second reducing pipe 141 is gradually increased from top to bottom, and thus, an upper end opening 1411 of the second reducing pipe 141 is smaller than a lower end opening 1412 of the second reducing pipe 141.

The first partition 142 is a hollow structure and is located between the second reducer 141 and the first reducer 131. The second float ball 143 is located between the first partition 142 and the second reducer 141.

Specifically, the first baffle 142 may be disposed in the first tubular segment 121 and may also be disposed in the second tubular segment 122. As shown in FIG. 1, in the present embodiment, the first baffle 142 is disposed at the boundary between the first tube segment 121 and the second tube segment 122. The first partition 142 may be fixedly connected to the sidewall of the water-seepage tube 120.

Because the first partition plate 142 is a hollow structure, when accumulated water in the cable trench 110 enters the second pipe section 122 from the side wall of the second pipe section 122, the accumulated water can flow downward through the first partition plate 142, then continuously flow downward through the upper end opening 1311 of the first reducer pipe 131, then flow downward into the first pipe section 121, and then be discharged downward from the first pipe section 121 and permeate into the soil layer 10.

Since the second float ball 143 is positioned between the first and second reducing

pipes

142 and 141, the first spacer 142 prevents the second float ball 143 from blocking the upper end opening 1311 of the first reducing pipe 131, and the accumulated water in the cable trench 110 can be discharged downward from the upper end opening 1311 of the first reducing pipe 131.

The second float ball 143 can float up and block the upper end opening 1411 of the second reducer pipe 141 under the action of buoyancy. The alarm unit 144 is located outside the second reducer pipe 141. When the second floating ball 143 blocks the upper end opening 1411 of the second reducer pipe 141, the alarm unit 144 can be triggered to send an alarm signal.

Specifically, the alarm unit 144 may be installed at the sidewall 112 of the cable trench 110, and may also be installed at an outer surface of the second reducer pipe 141, or the like. The alarm unit 144 may comprise an acoustic alarm unit and/or an optical alarm unit, etc. The acoustic alarm unit is, for example, a buzzer. The light alarm unit is for example a flashing light. When the second floating ball 143 blocks the upper end opening 1411 of the second reducer pipe 141, the alarm unit 144 can be triggered to send out an alarm signal. At this time, since the second float ball 143 closes the upper end opening 1411 of the second reducing pipe 141, the second float ball 143 cannot pass through the upper end opening 1411 of the second reducing pipe 141, so that the second float ball 143 can be prevented from floating out of the second reducing pipe 141 by the buoyancy, and the second float ball 143 can be restrained.

The water seepage process of the cable trench structure 100 when no reverse osmosis occurs will be described. When reverse osmosis does not occur, the first float ball 132 is located at the bottom of the infiltration pipe 120 under the action of gravity, as shown in fig. 1. The second float ball 143 is supported on the first barrier 142 by gravity. When water is accumulated on the bottom wall 111 of the cable trench 110, the accumulated water can enter the second pipe section 122 from the hollow part of the side wall of the second pipe section 122, then flow downwards through the hollow part of the first partition 142, flow downwards through the upper end opening 1311 of the first reducer pipe 131, enter the first pipe section 121, and finally be discharged downwards through the first pipe section 121 and permeate into the soil layer 10.

When reverse osmosis occurs, groundwater is poured into the first pipe section 121 from the bottom end of the infiltration pipe 120, and the buoyancy of the groundwater entering the first pipe section 121 will cause the first floating ball 132 to float upward. When the first floating ball 132 floats to the upper end opening 1311 of the first reducer pipe 131, the upper end opening 1311 of the first reducer pipe 131 can be blocked, so that reverse osmosis underground water cannot flow backwards through the upper end opening 1311 of the first reducer pipe 131, further the underground water can be prevented from continuing reverse osmosis, and a cable can be protected from corrosion of the reverse osmosis underground water.

When reverse osmosis occurs, the first float 132 blocks the upper end opening 1311 of the first reducer pipe 131, so that when there is accumulated water in the cable trench 110, the accumulated water cannot be discharged downward through the upper end opening 1311 of the first reducer pipe 131. At this time, the accumulated water in the cable trench 110 enters the second pipe section 122 from the hollow part of the side wall of the second pipe section 122, and then flows downwards through the hollow part of the first partition 142, and is stored above the first reducer pipe 131. As the accumulated water stored above the first reducer pipe 131 is more and exceeds the height of the first partition 142, the second floating ball 143 is driven to float by the buoyancy generated by the accumulated water. When the second floating ball 143 floats to the upper end opening 1411 of the second reducer pipe 141, the second floating ball 143 can trigger the alarm unit 144 to send out an alarm signal, so that a worker can find the reverse seepage condition of the groundwater in time and can early warn the accumulated water in the cable trench 110 in time.

In the cable trench structure 100, when groundwater reversely seeps from the bottom end of the seepage pipe 120, the buoyancy of the groundwater entering the first pipe section 121 will make the first floating ball 132 float upwards. When the first floating ball 132 floats to the upper end opening 1311 of the first reducer pipe 131, the upper end opening 1311 of the first reducer pipe 131 can be blocked, so that groundwater can be prevented from continuously seeping and the cable can be protected from erosion of seeping groundwater. Since the first float 132 blocks the upper end opening 1311 of the first reducing pipe 131, the accumulated water in the cable trench 110 cannot be discharged downward through the upper end opening 1311 of the first reducing pipe 131, and the accumulated water is stored above the first reducing pipe 131. The buoyancy of the accumulated water stored above the first reducer pipe 131 drives the second floating ball 143 to float. When the second floating ball 143 floats to the upper end opening 1411 of the second reducer pipe 141, the second floating ball 143 can trigger the alarm unit 144 to send out an alarm signal, so that a worker can find the reverse seepage condition of the groundwater in time and can early warn the accumulated water in the cable trench 110 in time.

In one embodiment, the sidewall of the first tube segment 121 is a hollow structure.

Specifically, as described above, the accumulated water in the cable trench 110 can be drained from the second pipe section 122 through the first reducer pipe 131 and the first partition 142 into the first pipe section 121 from the top to the bottom.

Because the lateral wall of first pipeline section 121 is hollow out construction to when ponding in the cable pit 110 was arranged to first pipeline section 121, can outwards seep water through the fretwork department of the lateral wall of first pipeline section 121, and then increased the infiltration area.

Compare in traditional infiltration pipe, infiltration pipe 120 in this embodiment not only can seep water through the bottom, can also outwards seep water through the lateral wall, has increased the infiltration area, has improved infiltration efficiency.

In one embodiment, first tube segment 121 and/or second tube segment 122 are bellows. The outer wall of bellows is equipped with a plurality of annular grooves along the axial interval arrangement in proper order, and the diapire of annular groove is equipped with a plurality of through-holes along circumference interval arrangement in proper order.

Specifically, in the present embodiment, the first pipe segment 121 is a bellows. The outer wall of the corrugated pipe is provided with a plurality of annular grooves which are sequentially arranged at intervals along the axial direction, and each annular groove extends along the circumferential direction of the corrugated pipe, so that the outer surface of the corrugated pipe forms a structure which is sequentially and alternately concave and convex along the axial direction, namely a structure similar to a ripple structure. The bottom wall of each annular groove is provided with a plurality of through holes which are circumferentially arranged at intervals in sequence. The plurality of through holes are used to pass accumulated water from the cable trench 110.

After the accumulated water in the cable trench 110 enters the first pipe segment 121, the water can be leaked to the outside through the plurality of through holes.

Compare in adopting the glossy infiltration pipe in ordinary surface, in this application embodiment, because first pipeline section 121 adopts the bellows, the bellows is equipped with the annular groove, consequently foreign matters such as the outside earth of first pipeline section 121 are difficult for contacting the diapire of annular groove to the through-hole of difficult jam annular groove diapire, and then be favorable to permeating water smoothly, overcome and offered the easy drawback that is blockked up by earth of through-hole at the glossy infiltration pipe in ordinary surface.

It is understood that the second pipe segment 121 may also be a bellows, and the second pipe segment 121 also has the structure of the bellows described above. The accumulated water in the cable trench 110 can enter the interior of the second pipe segment 121 through the through hole of the bottom wall of the annular groove of the second pipe segment 121.

In one embodiment, the cable trench structure 100 further includes a bottom plate 150 disposed at the bottom end of the infiltration pipe 120. The bottom plate 150 has a hollow structure.

Specifically, the bottom plate 150 may be fixedly connected to the bottom end of the water-seepage pipe 120. The bottom plate 150 can be used to support the first float 132.

By providing the bottom plate 150, it is possible to prevent large foreign substances such as stones below the infiltration pipe 120 from entering the infiltration pipe 120 to cause clogging. Moreover, because the bottom plate 150 is a hollow structure, the accumulated water in the cable trench 110 can seep into the soil layer 10 through the bottom plate 150 after entering the seeping pipe 120.

In one embodiment, the cable trench structure 100 further includes a ceramsite water-permeable layer 170. The ceramsite water seepage layer 170 is positioned below the bottom wall 111 of the cable trench 110. A layer of ceramic water-permeable 170 surrounds the first pipe section 121 and the bottom plate 150.

Specifically, the ceramsite water seepage layer 170 comprises a plurality of ceramsite. When the cable trench structure 100 is constructed, a layer of ceramsite can be laid, the water seepage pipe 120 is arranged above the layer of ceramsite, and the periphery of the first pipe section 121 is fully filled with the ceramsite, so that the ceramsite layer below the bottom plate 150 and the ceramsite on the periphery of the first pipe section 121 form a ceramsite water seepage layer 170. After the water in the first pipe section 121 seeps out of the first pipe section 121 and the bottom plate 150, the water can seep into the soil layer 10 through the ceramsite seepage layer 170.

As the ceramsite seepage layer 170 is arranged on the peripheries of the first pipe section 121 and the bottom plate 150, the first pipe section 121 and the bottom plate 150 can be respectively isolated from the soil layer 10 by the ceramsite seepage layer 170, so that the soil layer 10 can be prevented from directly blocking the first pipe section 121 and the bottom plate 150, and smooth seepage of the first pipe section 121 and the bottom plate 150 is facilitated.

In addition, compared with the soil layer, the gaps between the ceramic grains are larger, so that when water in the first pipe section 121 seeps through the ceramic grain seepage layer 170, the seepage speed is higher, and the seepage efficiency can be improved.

In one embodiment, the cable trench structure 100 further includes a cover plate 160 disposed at the upper end of the second tube segment 122. The cover plate 160 is a hollow structure.

Specifically, a cover plate 160 may be fixedly coupled to the upper end of second tube segment 122. Through setting up apron 160, foreign matters such as the outside stone that drops of cable pit 110, rubbish directly fall into infiltration pipe 120 can be prevented to can prevent that infiltration pipe 120 from blockking up.

Moreover, since the cover plate 160 is a hollow structure, when external water flows, such as rain, enter the cable trench 110 from top to bottom, the external water flows downward into the second pipe section 122 through the cover plate 160, and is drained downward through the second reducer pipe 141.

Referring to fig. 2, in an embodiment, the cover plate 160 has a first region 161 and a second region 162 located at the periphery of the first region 161. The first region 161 is a solid structure, and the second region 162 is a hollow structure. The first region 161 corresponds to the upper end opening 1411 of the second reducer 141. A projection of the outer surface of the second reducer 141 on the cover plate 160 corresponds to the second region 162.

Specifically, the first region 161 of the cover plate 160 is located above the upper end opening 1411 of the second reducer 141. Also, the area of the first region 161 of the cover plate 160 is not smaller than the area of the upper end opening 1411 of the second reducer 141. Since the first region 161 is a solid structure, the first region 161 of the cover plate 160 can block the upper end opening 1411 of the second reducer 141, so that foreign matters falling from above the cover plate 160 can be prevented from directly entering the weep pipe 120 from the upper end opening 1411 of the second reducer 141, or the foreign matters falling from above the cover plate 160 can be prevented from blocking the upper end opening 1411 of the second reducer 141, which is favorable for keeping the weep pipe 120 unobstructed, and the upper end opening 1411 of the second reducer 141 can be kept unobstructed.

The second region 162 may have a grid-like hollow structure as shown in fig. 2. Because the second region 162 has a hollow structure, when external water flows such as rainwater enter the cable trench 110 from top to bottom, the external water flows can be discharged into the second pipe section 122 through the hollow of the second region 162 and then discharged through the second reducer pipe 141. In addition, since the second region 162 has a grid-shaped structure, the grid is small, so that most of the foreign matters can be prevented from entering the water seepage pipe 120.

Further, as shown in fig. 1, the sidewall of the second reducer 141 is inclined, and a projection of the outer surface of the second reducer 141 on the cover plate 160 corresponds to the second region 162. Since the second region 162 has a hollow structure, when smaller foreign objects (for example, sand, gravel, etc.) falling from above the cover plate 160 fall through the hollow of the second region 162, the smaller foreign objects can fall on the outer surface of the second reducing pipe 141 without entering the upper end opening 1411 of the second reducing pipe 141. Therefore, the second reducer 141 acts as a barrier to foreign matters, and further ensures that the water seepage pipe 120 can be kept smooth.

As shown in fig. 1, since the sidewall of the second reducer 141 is inclined, an enclosed space 101 is formed between the outer surface of the second reducer 141 and the inner wall of the second pipe section 122. The enclosure space 101 can accommodate foreign matter falling onto the outer surface of the second reducer pipe 141. As can be understood from fig. 1, the enclosure space 101 is lower than the upper end opening 1411 of the second reducing pipe 141, so that foreign matters falling onto the outer surface of the second reducing pipe 141 can be positioned lower than the upper end opening 1411 of the second reducing pipe 141 in the enclosure space 101, and further are less likely to enter the upper end opening 1411 of the second reducing pipe 141.

Referring to fig. 2, in an embodiment, the first partition 142 has a third region (not shown) and a fourth region (not shown) located at the periphery of the third region. The third area is of a solid structure, and the fourth area is of a hollow structure. The third region corresponds to the upper end opening 1311 of the first reducer pipe 131. A projection of the outer surface of the first reducer pipe 131 on the first partition 142 corresponds to the fourth region.

Specifically, the first partition 142 and the cover plate 160 may have the same structure, i.e., the third region of the first partition 142 and the first region 161 of the cover plate 160 have the same solid structure. The fourth area of the first partition 142 and the second area 162 of the cover plate 160 adopt the same hollow structure.

The third area of the first diaphragm 142 is located above the upper end opening 1311 of the first reducer pipe 131. The area of the third region of the first partition 142 is not smaller than the area of the upper end opening 1311 of the first reducer pipe 131. Since the third area is a solid structure, the third area of the first partition 142 can block the upper opening 1311 of the first reducer 131, so that foreign matters (such as stones, sand, etc.) from above the first partition 142 can be prevented from directly entering the water seepage pipe 120 from the upper opening 1311 of the first reducer 131, and the water seepage pipe 120 can be kept smooth.

The fourth area can adopt a grid-shaped hollow structure. Because the fourth area is of a hollow structure, accumulated water in the second pipe section 122 can be drained downwards into the first pipe section 121 through the hollow part of the fourth area, and drained downwards through the first reducer pipe 131. In addition, since the fourth region has a grid-shaped structure, the grid is small, and thus most of the foreign matters can be prevented from entering the first pipe section 121.

Further, as shown in fig. 1, the sidewall of the first reducing pipe 131 is inclined, and a projection of the outer surface of the first reducing pipe 131 on the first partition 142 corresponds to a fourth area. Since the fourth region has a hollow structure, when smaller foreign materials (for example, sand, stones, etc.) falling from above the first barrier 142 fall through the hollow of the fourth region, the foreign materials can fall on the outer surface of the first reducer pipe 131 without entering the upper end opening 1311 of the first reducer pipe 131. It can be seen that the first reducer pipe 131 acts as a foreign matter blocking device, and further ensures that the first pipe section 121 can be kept open.

As shown in fig. 1, since the sidewall of the first reducer pipe 131 is inclined, an enclosure space (not shown) is formed between the outer surface of the first reducer pipe 131 and the inner wall of the second pipe section 122. The enclosure space can accommodate foreign matter falling onto the outer surface of the first reducer pipe 131. As can be understood from fig. 1, the enclosure space is lower than the upper end opening 1311 of the first reducing pipe 131, so that foreign matters falling onto the outer surface of the first reducing pipe 131 can be positioned lower than the upper end opening 1311 of the first reducing pipe 131 in the enclosure space, and thus are less likely to enter the upper end opening 1311 of the first reducing pipe 131.

In one embodiment, the cable trench structure 100 further includes a relay (not shown). The relay is located outside the second reducer pipe 141.

Specifically, the relay 144 may be mounted on the sidewall 112 of the cable trench 110, or may be mounted on an outer surface of the second reducer pipe 141.

In this embodiment, the second float ball 143 is connected to the relay, which is connected to the alarm unit 144. The second float 143 is a float switch that can be closed at a predetermined level. When the second floating ball 143 floats to block the upper end opening 1411 of the second reducer 141, the second floating ball 143 reaches the predetermined liquid level and is closed, so that the second floating ball 143 is communicated with a circuit where the relay is located, and the relay is triggered to act. After the relay acts, the relay is communicated with a circuit where the alarm unit 144 is located, so that the alarm unit 144 can be triggered to send out an alarm signal.

The specific structure and the working principle of the float switch are the prior art, and are not described in detail herein.

As shown in fig. 1, in one embodiment, the alarm unit 144 is disposed on a lower surface of the first region 161 of the cover 160. As the first area 161 is of a solid structure, the alarm unit 144 can be shielded, and the alarm unit 144 is prevented from water entering. Similarly, the relay may be disposed on the lower surface of the first region 161 of the cover plate 160, so as to shield the alarm unit 144 and prevent the relay from entering water.

In one embodiment, the cable trench structure 100 further includes a pressure sensor (not shown) and a controller (not shown). The pressure sensor is provided at an inner wall of the upper end opening 1411 of the second reducer pipe 141. When the function of the second floating ball 143 that triggers the alarm unit 144 through the relay fails, the accumulated water in the cable trench 110 will continue to rise due to untimely cleaning, so that the second floating ball 143 receives an increase of the upward buoyancy, and further, as the buoyancy continues to increase, the pressure applied to the pressure sensor by the second floating ball 143 increases. When the pressure signal detected by the pressure sensor reaches a predetermined threshold, the controller can control the alarm unit 144 to send out an alarm signal according to the predetermined threshold, so that a second-level early warning can be provided.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A cable trench structure, comprising:

the water seepage pipe is arranged in the channel and is communicated with the cable trench, the water seepage pipe comprises a first pipe section lower than the bottom wall and a second pipe section higher than the bottom wall, and the side wall of the second pipe section is of a hollow structure;

the first reducing pipe is arranged in the first pipe section and is coaxial with the water seepage pipe; the lower end of the first reducing pipe is arranged on the side wall of the first pipe section, and the upper end opening of the first reducing pipe is smaller than the lower end opening of the first reducing pipe;

the second floating ball is positioned between the first partition plate and the second reducing pipe and can float upwards under the action of buoyancy to block an upper end opening of the second reducing pipe;

the alarm unit is positioned outside the second reducer pipe; the alarm unit can be triggered to send out an alarm signal when the second floating ball plugs the opening at the upper end of the second reducer pipe;

the cover plate is arranged at the upper end of the second pipe section, is of a hollow structure and is provided with a first area and a second area positioned on the periphery of the first area; the first area is of a solid structure, and the second area is of a hollow structure; the first area corresponds to an upper end opening of the second reducer pipe, and a projection of the outer surface of the second reducer pipe on the cover plate corresponds to the second area; and

the pressure sensor is arranged on the inner wall of the upper end opening of the second reducer pipe, and when the pressure applied to the pressure sensor by the second floating ball reaches a preset threshold value, the controller can control the alarm unit to send out an alarm signal.

2. The cable trench structure of claim 1, wherein the sidewalls of the first tube section are hollowed out.

3. The cable trench structure of claim 2, wherein the first and/or second tube segments are corrugated tubes; the outer wall of bellows is equipped with a plurality of annular grooves along the axial interval arrangement in proper order, every annular groove's diapire is equipped with a plurality of through-holes along circumference interval arrangement in proper order.

4. The cable trench structure of claim 1, further comprising a bottom plate disposed at a bottom end of the water seepage pipe, wherein the bottom plate is a hollow structure.

5. The cable trench structure of claim 4, further comprising a ceramic water-permeable layer located below the bottom wall of the cable trench, the ceramic water-permeable layer surrounding the first pipe section and the bottom plate.

6. The cable trench structure of claim 1, wherein the first bulkhead has a third region and a fourth region located about a periphery of the third region; the third area is of a solid structure, and the fourth area is of a hollow structure; the third area corresponds to an upper end opening of the first reducer pipe, and a projection of the outer surface of the first reducer pipe on the first partition plate corresponds to the fourth area.

7. The cable trench structure of claim 1, further comprising a relay located outside the second reducer pipe;

when the second floating ball floats to block the opening at the upper end of the second reducing pipe, the relay can be triggered to act, so that the relay triggers the alarm unit to send an alarm signal.