CN112186611B

CN112186611B - Outer broken location early warning device of cable management corridor passageway

Info

Publication number: CN112186611B
Application number: CN202011026319.3A
Authority: CN
Inventors: 赵舒怀; 徐云龙; 徐卫宏; 卢立涛; 陈长征; 刘浩
Original assignee: State Grid Shandong Electric Power Co Juxian Power Supply Co
Current assignee: State Grid Shandong Electric Power Co Juxian Power Supply Co
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-05-17
Anticipated expiration: 2040-09-25
Also published as: CN112186611A

Abstract

The invention relates to the field of electrical equipment, in particular to a cable pipe gallery channel external damage positioning early warning device. A detection pipeline is connected between the two marking piles, and a detection medium is arranged in the detection pipeline. The upper portion of warning line on cable piping lane or cable pit upper portion is located to the detection pipeline. The marking pile is internally provided with a detection module, and the detection module is communicated with a detection pipeline to detect the change of a detection medium. When the detection module detects that the detection medium changes, alarm information is sent out, and the alarm information contains the geographical position information of the marking pile so as to rapidly arrive at an accident scene. The invention can also send out early warning signals when the marking pile is damaged or moved, and also can send out early warning information in time after detecting the damage of the detection pipeline, and meanwhile, the invention can find out the construction on the upper part of the cable trench or the cable pipe gallery in time, and can command and coordinate to avoid the further damage of the cable or the cable pipe gallery in time.

Description

Outer broken location early warning device of cable management corridor passageway

Technical Field

The invention relates to the field of electrical equipment, in particular to a cable pipe gallery channel external-breaking positioning early warning device.

Background

With the development of society, especially the acceleration of urbanization process, the transmission of transmission line is realized to the mode that the cable is buried, or the cable is placed inside the cable pipe gallery in urban area mostly. The cable is buried underground, so that the cable is inconvenient to find and maintain, the specific line of the cable cannot be known even though the cable marking pile exists, and particularly, the situation that the cable is dug to be segmented or the cable gallery is damaged can occur under the situation that a construction party cannot know the site situation. And the cable in case be dug the section or destroy then can influence resident's power consumption, and then greatly reduced power supply quality, bring inconvenience for people's life simultaneously. Therefore, the design of the cable pipe gallery channel external-breaking positioning early warning device which can timely find construction and early warn in advance to prevent the cable or the cable pipe gallery from being damaged becomes an urgent requirement.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a broken location early warning device outside cable management corridor passageway that has in time to discover the construction, early warning in advance prevents cable or cable management corridor destroyed.

The technical scheme of the technical problem to be solved by the invention is as follows:

broken location early warning device outside cable duct passageway, including marking the stake, its characterized in that: a detection pipeline is connected between the two marking piles, and a detection medium is arranged in the detection pipeline; the detection pipeline is arranged on the upper part of a warning line on the upper part of the cable pipe gallery or the cable trench; a detection module is arranged in the marking pile and is communicated with a detection pipeline to detect the change of a detection medium; a power generation plate is arranged at the upper part of the marking pile; when the detection module detects that the detection medium changes, alarm information is sent out, and the alarm information contains the geographical position information of the marking pile so as to rapidly arrive at an accident scene.

Preferably, the detection pipeline is a plastic pipe or a cement pipe.

Preferably, the detection medium is a liquid, a gas or a flowing liquid or gas.

Preferably, the detection module comprises a slide pipe, a slide block, a position switch, a pressure pump and a controller; an air bag is arranged at the upper part of the sliding pipe; the sliding block is arranged inside the sliding pipe in a sliding mode; the position switch is arranged at the lower part of the sliding block; the pressure pump is communicated with the sliding pipe; the position switch comprises an infrared generator and an infrared receiver, the position switch is arranged on two sides of the outside of the sliding tube, and the position of the sliding tube, on which the position switch is arranged, is made of transparent materials;

or the like, or, alternatively,

the position switch is a proximity switch or an inductive switch; the controller is electrically connected with the pressure pump, the position switch and the power generation board.

Preferably, the detection module comprises a sliding pipe, a sliding block, a floating ball and a position switch; the lower end of the sliding pipe is communicated with the detection pipeline, and the floating ball is arranged inside the sliding pipe; the upper part of the floating ball is connected with a sliding block, and the position switch is arranged at the lower part of the sliding block; the upper end of the sliding pipe is connected with the air bag, or an oil film is arranged on the water surface inside the sliding pipe.

Preferably, a second position switch is arranged at the upper part of the position switch; the operation method comprises the following steps:

when the controller detects that the sliding block is located at the second position switch, timing is started;

detecting timing time, and starting a pressurizing pump to pressurize the pipeline when the timing time is greater than a pressure relief threshold;

when the controller detects that the slide block reaches the position of the position switch, timing is stopped;

and detecting the timing time, and sending out an alarm signal when the timing time is less than the damage threshold value.

Preferably, the controller comprises a first position detection circuit, a second position detection circuit, an alarm circuit and a pressurizing circuit which are connected in parallel between the anode and the cathode of the power supply; the second position switch is a first inductive switch, and the position switch is a second inductive switch; the first position detection circuit comprises a first relay and a first time relay, the second position detection circuit comprises a second relay, and the alarm circuit comprises a reset button, an alarm lamp and a whistle; the pressurization circuit comprises a second time relay and a pressurization pump; a coil winding of the first relay is connected in series with a first induction switch, a normally closed contact of a second relay and a time-delay disconnected contact of a second time relay, and a normally open contact of the first relay is connected in parallel with the first induction switch; the coil winding of the first time relay is connected with the normally closed contact of the first relay in series and then connected between the positive pole and the negative pole of the power supply in parallel; the second relay is connected with the second inductive switch and the delay disconnection contact of the first time relay in series, and the normally open contact of the second relay is connected with the second inductive switch and the delay disconnection contact of the first time relay in series in parallel; the reset button, the normally open contact of the second relay and the alarm lamp are connected in series, and the electric whistle and the alarm lamp are connected in parallel; the coil winding of the second time relay is connected in series with the delay closed contact of the first time relay and the normally closed contact of the second time relay, and the instantaneous action normally open contact of the second time relay is connected in parallel with the delay closed contact of the first time relay and the normally closed contact of the second relay which are connected in series; and the time delay disconnection contact of the second time relay is connected with the pressure pump in series.

Preferably, the detection module comprises an air pump, an airflow detection device and a controller, and the two ends of the air pump and the two ends of the detection pipeline are respectively connected with the air pump and the airflow detection device of two adjacent marking piles.

Preferably, the middle part of the marking pile is provided with a cavity, the bottom of the cavity is triangular, and the side wall of the cavity is provided with air holes which incline downwards.

Preferably, the detection medium is an optical fiber, and the detection module comprises a light emitting diode and a phototriode; two ends of the optical fiber are respectively connected with the light emitting diode of the marking pile and the phototriode of the adjacent marking pile;

or the two ends of the optical fiber are respectively connected with the light emitting diode and the phototriode of the marking pile, and the optical fiber folding point is located at the end point of the adjacent marking pile or cable trench or the end point of the cable pipe gallery.

The invention has the beneficial effects that:

1. the construction on cable pit or cable piping lane upper portion is in time discovered, and the further destruction of cable or cable piping lane is avoided in the command coordination of arriving in the field in time.

2. And timely sending out early warning information after detecting the damage of the detection pipeline.

3. When the marking pile is damaged or moved, a warning signal can be sent out.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention

FIG. 2 is a schematic view of a marker post according to an embodiment of the present invention

FIG. 3 is a schematic view of the direction of FIG. 2A

FIG. 4 is a schematic view of the direction of FIG. 2B

FIG. 5 is a schematic diagram of a detection module according to an embodiment of the invention

FIG. 6 is a schematic diagram of a detection module according to an embodiment of the present invention

FIG. 7 is a schematic diagram of a detection module according to an embodiment of the invention

FIG. 8 is a schematic diagram of a control circuit according to an embodiment of the present invention

FIG. 9 is a schematic view of a marker post with a whistle according to an embodiment of the present invention

FIG. 10 is a schematic view of a marker post according to an embodiment of the present invention

FIG. 11 is a schematic diagram of a control circuit according to an embodiment of the present invention

FIG. 12 is a schematic diagram of a control circuit according to an embodiment of the present invention

In the figure: u1 and a singlechip; 600. an alarm communication module; 190. an internal pipeline; 130. a sound outlet hole; 700. an alarm module; 120. air holes are formed; 110. a cavity; t2, a second time relay; SB1, reset button; k2, a second relay; SQ2, second inductive switch; SQ1, first inductive switch; t1, first time relay; k1, a first relay; 620. an airflow detecting device; 610. an air pump; 460. a floating ball; 490. a second position switch; 500. a power generation panel; 450. a pressure pump; 440. a position switch; 430. a slider; 420. an air bag; 410. a slide pipe; 400. a detection module; 300. detecting the medium; 200. detecting a pipeline; 100. marking the piles;

Detailed Description

In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.

Broken location early warning device outside cable management corridor passageway, including marking stake 100, two it is connected with detection pipeline 200 to mark between the stake 100, detection pipeline 200 is plastic tubing or cement pipe. A detection medium 300 is arranged in the detection pipeline 200; the detection pipeline 200 is arranged on the upper portion of the warning line on the upper portion of the cable pipe gallery or the cable trench. A detection module 400 is arranged in the marking pile 100, and the detection module 400 is communicated with the detection pipeline 200 to detect the change of the detection medium 300; the marker post 100 is provided at an upper portion thereof with a power generating plate 500 for supplying power to the detection module 400. When the detection module 400 detects that the detection medium 300 is changed, an alarm message is sent out. The alarm can be realized by adopting the mode of electric bell, electric whistle and flashing alarm lamp, and the power supply of the alarm module is provided with the power generation board.

In order to protect the detection module, the detection module 400 is arranged inside the marker post 100, and based on this, the middle of the marker post 100 is provided with a cavity 110.

When air or flowing air is used for detection, the cavity 110 needs to be communicated with the external atmosphere to ensure that the two marker posts 100 connected with the detection pipeline 200 maintain stable and equal air pressure, so as to avoid false alarm caused by pressure difference. At this time, the air holes 120 are formed on the side wall of the indication post 100. The airing hole 120 communicates the outside and the inside of the cavity 110.

To prevent the entry of rainwater and at the same time facilitate the outflow of rainwater when entering rainwater, the bottom of the cavity 110 is triangular and the tip is directed upward. The inclined direction of the airing hole 120 is the same as that of the bottom triangle, and the inner end of the airing hole 120 is located at the bottom of the cavity 110.

To facilitate connection of the test module 400 to the test line 200, an internal line 190 is provided within the marker post 100. The internal pipe 190 communicates the cavity 110 and the outside. Or pipeline interfaces are arranged at two ends of the internal pipeline 190 so as to be connected with the detection module and the detection pipeline.

In order to facilitate the acquisition of electric energy, the upper portion of the marker post 100 is provided with a power generation panel 500. Specifically, the upper plane of the marker pile 100 is provided with a groove, and the power generation plate 500 is embedded in the groove. In order to stabilize and store the electric energy, a storage battery is installed inside the cavity 110 of the indication post 100, and the power generation board 500 charges the storage battery, and the storage battery provides power for the power supply module or the alarm module.

In order to facilitate the diffusion of the alarm signal, especially the emission of the sound signal, as shown in fig. 9, a placement groove is provided on the inner wall of the cavity 110, and the alarm module 700 is placed inside the placement groove or directly mounted on the sidewall of the cavity 110. A sound outlet 130 is provided on the marker post 100 at a position corresponding to the alarm module 700. Also, for water inflow, the length direction of the sound outlet hole 130 is inclined downward from the inside to the outside, and this arrangement is the same as the inclination direction of the ventilation hole 120.

The detection medium 300 may be a liquid, a gas, or a flowing liquid and gas. Wherein the detection medium 300 may be water, air, or flowing air or water.

When liquid or gas is adopted, the detection module 400 detects the change of the volume of the detection medium 300, that is, after the detection pipeline 200 is damaged, the gas or the liquid leaks out, so that the volume of the detection medium 300 is rapidly reduced, and at this time, it is determined that the detection pipeline 200 is damaged and an alarm is given.

When fluid is used as the detection medium 300, the detection module 400 detects whether the detection medium 300 flows, and if the detection pipeline 200 is damaged, the fluid does not flow any more, so that it can be determined that the detection pipeline 200 is damaged and an alarm signal is sent.

In a first mode

In this embodiment, the detection medium 300 is a gas. At this time, the detection module 400 includes a slide tube 410, a slider 430, a position switch 440, a pressurizing pump 450, and a controller.

The slide tube 410 is a smooth-inside pipe. The upper end of the slide tube 410 is connected to a balloon 420, and the balloon 420 may be a balloon or a gas container made of a flexible material. The lower end of the slide pipe 410 is connected to the internal pipe 190. The sliding block 430 is slidably disposed inside the sliding tube 410, and the sliding block 430 has a certain sealing property, so that the stability of air pressure on both sides of the sliding block can be ensured.

In order to prevent the chronic leakage of gas, a pressurizing pump 450 is provided, and the pressurizing pump is electrically connected to a controller, and the controller activates the pressurizing pump 450 when detecting that the internal gas pressure is too small. The outlet pipe of the pressurizing pump 450 communicates with the inside of the slide pipe 410.

In a normal state, the air pressure of the air bag 420 is the same as the air pressure of the detection line 200, and the slider 430 is kept stable inside the slide tube. After the detection pipeline 200 is cut off, the air pressure on the pipeline side of the slide block 430 is reduced, the slide block moves downwards under the action of the air bag 420, and whether the detection pipeline is dug off or not is judged through detecting the position and the falling speed of the slide block 430. At this time, the position switch 440 needs to be set to detect the position.

The position switch 440 may be configured as an infrared correlation switch including an infrared transmitter and an infrared receiver. The infrared receiving module needs to set the slide tube in a transparent state, such as a glass slide tube, or a transparent material is set in a part of the slide tube 410.

Alternatively, the position switch 440 is a proximity switch or an inductive switch. As shown, the proximity switch is disposed at a lower portion of the slider, and a contact of the proximity switch faces upward, and after the slider falls, the proximity switch is activated. In the case of an inductive switch, the slider is provided as a metallic material such as iron. The inductive switch is set as an eddy current type inductive switch. The inductive switch is arranged on the outer side of the side wall of the slide tube, and the position signal can be detected.

The controller is electrically connected to the booster pump 450, the position switch 440, and the generator board 500. Alternatively, the controller is electrically connected to the battery.

In this way, one end of the detection pipeline can be closed, and the other end is provided with the detection module.

Mode two

In this manner, the detection medium 300 is liquid, i.e., the detection pipeline is filled with water. The detection module 400 comprises a sliding tube 410, a floating ball 460 and a position switch 440; alternatively, an air bag 420 is also included.

The lower end of the slide pipe 410 is communicated with the detection pipe 200 through an internal pipe, and the upper end is connected with the air bag 420. Different from the first mode, the air bag can be internally provided with gas with pressure or filled with gas in a normal pressure state. Here, the upper end of the slide pipe 410 may be opened. The floating ball 460 is arranged inside the sliding tube 410; the upper portion of the floating ball 460 is connected with a sliding block 430, and the position switch 440 is arranged at the lower portion of the sliding block 430. In the present embodiment, the position detection switch is the same as the position detection switch of the first embodiment.

At this point, there are two internal conduits 190 in the marker post 100, designated herein as a first conduit connected to the detection module 400 and a second conduit in an open configuration. In order to prevent evaporation of water, an oil film is provided on the liquid surface. Meanwhile, for evaporation, the air bag can be sleeved at the upper end of the sliding pipe of the detection module, and the air bag is sleeved on the second open pipeline.

The mode can be simplified into the mode that liquid is injected into the U-shaped pipe, and the heights of the two liquid levels are the same.

Mode III

In this manner, the detection medium is a flowing gas, i.e., a gas stream. The detection module 400 includes an air pump 610, an air flow detection device 620, and a controller. The air pump 610 and the two ends of the detection pipeline 200 are respectively connected with the air pumps and the air flow detection devices of two adjacent indication piles 100. The airflow detecting device 620 is an airflow detecting sensor, and the air pump 610 may use a blower, or the like to blow air into the detecting pipeline. In this way, the construction is simple, that is, each of the indication piles 100 is connected in a communication manner, for example, one of the indication piles 100 is connected to the air pump 610 and the other is connected to the air flow detection device 620.

Preferably, in order to prevent the air pump 610 from affecting the air flow detecting means 620, the air pump 610 is disposed at one side of the cavity 110, and the air flow detecting means 620 is disposed at the other side, and the air flow detecting means is partitioned by the wind blocking partition 140 made of sponge, pearl wool, or other sheet materials.

Mode IV

In this manner, an optical fiber is used as the detection medium 300, and the optical fiber is laid in the detection pipeline. The detection module 400 includes a light emitting diode and a photo transistor. And two ends of the optical fiber are respectively connected with the light emitting diode of the marking pile 100 and the phototriode of the adjacent marking pile 100. If it is normal to detect the pipeline, then the phototriode can detect light signal, if detect the pipeline and be dug the section, then the phototriode can not detect light signal, and then sends alarm information. The phototriode can be used as a switching element to drive the alarm module 700 to send out an alarm signal.

Furthermore, the two ends of the optical fiber are respectively connected with the light emitting diode and the phototriode of the marking pile 100, and the optical fiber folding back point is located at the end point of the adjacent marking pile 100 or the cable trench or the end point of the cable duct. Under this kind of mode, can satisfy cross corridor and detect, three or three more cable management corridor assembles at a point promptly. The detection of each branch duct lane can now be achieved in this way.

Based on the first and second modes, in order to accurately detect the breakage of the detection pipeline, the second position switch 490 is provided on the upper portion of the position switch (440). The detection and judgment method comprises the following steps:

when the controller detects that the slide block 430 is located at the second position switch 490, timing is started;

detecting timing time, and starting a pressurizing pump 450 to pressurize the pipeline when the timing time is greater than a pressure relief threshold;

when the controller detects that the slide block 430 reaches the position of the position switch 440, timing is stopped;

and detecting the timing time, and sending an alarm signal when the timing time is less than the damage threshold value.

This kind of mode can effectually avoid leading to the slider to descend because of the evaporation of the chronic of gaseous revealing, water, and then leads to the emergence of wrong report.

When the slider 430 reaches the second position switch 490, two situations may occur, namely, the detection line breaks causing the slider 430 to descend, and the water evaporates or the gas leaks chronically causing the slider 430 to descend. According to these two cases analysis:

when the pipeline 200 is lowered when being detected to be damaged, the lowering speed is high, the pipeline can reach the position switch in a short time, the time period is set as a damage threshold value, and if the pipeline reaches the position switch 440 within the range of the damage threshold value, the pipeline is damaged due to construction;

when the detection line 200 drops due to normal evaporation or leakage of the latter, it takes a long time to reach the position switch 440 and does not reach the position switch 440 for a while. At this time, the time period is set as the pressure relief threshold, and if the operation of the position switch 440 is not detected outside the time period greater than the pressure relief threshold after the second position switch 490 is reached, it indicates normal leakage or evaporation, and at this time, the air pressure in the pipeline may be increased by the pressure pump. The air outlet end of the pressure pump is connected with the bottom end of the slide pipe and is communicated with the inside of the slide pipe. Normally, the pressure relief threshold is greater than or equal to the breakage threshold. Preferably, the pressure relief threshold is set equal to the breakage threshold for ease of control.

As shown, a stop collar may be provided at the bottom of the slide tube in order to allow the slide 430 to slide down.

The controller can be realized by adopting a microcontroller singlechip. However, when a processor such as a single chip microcomputer is adopted, the real-time operation is needed, and further, the electric energy loss is possibly overlarge, and the reliability of equipment without normal power supply is reduced. Accordingly, the present invention discloses a control circuit for a controller.

The controller comprises a first position detection circuit, a second position detection circuit, an alarm circuit and a pressurizing circuit which are connected in parallel between the anode and the cathode of the power supply. The first position detection circuit is used to detect whether the slide block reaches the position of the second position switch, and starts the timer when the slide block reaches the position of the second position switch 490. The second position detection circuit is used for detecting whether the slide block reaches the position of the position switch or not and judging whether the slide block is within a damage threshold value or not when the slide block reaches the position switch. The alarm circuit and the pressurization circuit are respectively used for alarming and recovering the pressure in the sliding pipe.

At this time, the second position switch 490 adopts a first inductive switch SQ1, and the position switch 440 adopts a second inductive switch SQ 2;

as shown in fig. 11, the first position detecting circuit includes a first relay K1, a first time relay T1, the second position detecting circuit includes a second relay K2, and the alarm circuit includes a reset button SB1, an alarm lamp, and a siren; the pressurizing circuit includes a second time relay T2 and a pressurizing pump 450.

The coil winding of the first relay K1 is connected in series with the normally closed contact of the first induction switch SQ1, the second relay K2 and the contact of the time delay disconnection of the second time relay T2, and the normally open contact of the first relay K1 is connected in parallel with the first induction switch SQ 1.

And a coil winding of the first time relay T1 is connected in series with a normally closed contact of the first relay K1 and then is connected between the positive pole and the negative pole of the power supply in parallel.

The time delay disconnection contacts of the second relay K2, the second induction switch SQ2 and the first time relay T1 are connected in series, and the normally open contact of the second relay K2 is connected with the time delay disconnection contacts of the second induction switch SQ2 and the first time relay T1 which are connected in series in parallel.

The normally open contact of reset button SB1, second relay K2, alarm lamp series connection, electric whistle and alarm lamp parallel connection.

The coil winding of the second time relay T2 is connected with the delay closing contact of the first time relay T1 and the normally closed contact of the second relay K2 in series, and the instantaneous action normally open contact of the second time relay T2 is connected with the delay closing contact of the first time relay T1 and the normally closed contact of the second relay K2 in series in parallel.

The delay opening contact of the second time relay T2 time relay is connected in series with the booster pump 450.

When this scheme of adoption, time relay can choose for use the time relay who has instantaneous action contact and time delay action contact, and then can simplify circuit structure.

Meanwhile, by adopting the circuit, all circuits are in a disconnected state under the condition that the trigger switch is not arranged, and the reduction of power consumption can be realized.

Preferably, as shown in fig. 12, in order to implement transmission of the alarm signal, an alarm communication module 600 may be further provided, the alarm communication module may adopt a GPRS module, a 4G communication module, a 5G communication module, or an NB-IoT communication module, and the function of sending information is automatically executed after the setter is started. And then maintenance personnel can receive the information in time.

As shown in fig. 8, the controller is a controller made of a CPU such as a single chip microcomputer. The program of the detection method disclosed by the invention is set in the controller, so that the detection of the outer damage of the pipe gallery can be realized. As shown in the figure, the first induction switch SQ1, the second induction switch SQ2 and the reset button SB1 are connected with the IO interface of the single chip microcomputer U1, and the electric control switch and the electric bell whistle are connected in series and then connected in parallel between the positive electrode and the negative electrode of the power supply. The alarm communication module 600 is electrically connected with the singlechip U1. At the moment, the single chip microcomputer determines whether an alarm is needed or not after judging according to the input conditions of the first induction switch SQ1 and the second induction switch SQ2, and if the alarm is needed, the electric control switch is closed and the alarm communication module 600 is started to send an alarm signal. Wherein the alarm signal or alarm information contains geographical location information of the marker post 100 to quickly reach the accident scene.

Based on the technical scheme disclosed by the invention, under the condition that the marking pile 100 is moved or damaged, the alarm signal can be sent out in time, so that the problem that the specific position of the cable cannot be found due to the damage of the marking pile 100 can be avoided.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.

Claims

1. Broken location early warning device outside cable management corridor passageway, including mark stake (100), its characterized in that:

a detection pipeline (200) is connected between the two marking piles (100), a detection medium (300) is arranged in the detection pipeline (200), and the detection medium (300) is gas; the detection pipeline (200) is arranged on the upper part of a warning line on the upper part of the cable pipe gallery or the cable trench;

a detection module (400) is arranged in the marking pile (100),

the detection module (400) is communicated with the detection pipeline (200) to detect the change of the detection medium (300);

the upper part of the marking pile (100) is provided with a power generation plate (500);

the detection module (400) comprises a slide pipe (410), a slide block (430), a position switch (440), a pressure pump (450) and a controller; an air bag (420) is arranged at the upper part of the sliding pipe (410); the sliding block (430) is arranged inside the sliding pipe (410) in a sliding mode; the position switch (440) is arranged at the lower part of the sliding block (430); the pressure pump (450) is communicated with the slide pipe (410); the position switches (440) are arranged on two sides of the outer part of the sliding pipe (410), and the position of the position switch (440) arranged on the sliding pipe (410) is made of transparent materials; the controller is electrically connected with the pressure pump (450), the position switch (440) and the power generation board (500),

when the detection module (400) detects that the detection medium (300) is changed, alarm information is sent out, and the alarm information contains the geographical position information of the marking pile (100) so as to rapidly arrive at the accident scene.

2. The cable duct corridor passageway breaks location early warning device according to claim 1, characterized in that:

the detection pipeline (200) is a plastic pipe or a cement pipe.

3. The cable duct corridor passageway breaks location early warning device according to claim 1, characterized in that:

a second position switch (490) is arranged at the upper part of the position switch (440);

the controller comprises a first position detection circuit, a second position detection circuit, an alarm circuit and a pressurizing circuit which are connected in parallel between the anode and the cathode of the power supply;

the second position switch (490) is a first inductive switch (SQ 1), and the position switch (440) is a second inductive switch (SQ 2);

the first position detection circuit includes a first relay (K1), a first time relay (T1), the second position detection circuit includes a second relay (K2), the alarm circuit includes a reset button (SB 1), an alarm lamp, and a siren; the pressurization circuit comprises a second time relay (T2) and a pressurization pump;

a coil winding of the first relay (K1) is connected with a first induction switch (SQ 1), a normally closed contact of a second relay (K2) and a contact of a second time relay (T2) which is opened in a delayed mode in series, and a normally open contact of the first relay (K1) is connected with a first induction switch (SQ 1) in parallel;

a coil winding of the first time relay (T1) is connected in series with a normally closed contact of the first relay (K1) and then is connected between the positive pole and the negative pole of a power supply in parallel;

the second relay (K2), a second induction switch (SQ 2) and a time delay disconnection contact of a first time relay (T1) are connected in series, and a normally open contact of the second relay (K2) is connected in parallel with the time delay disconnection contact of the second induction switch (SQ 2) and the time delay disconnection contact of the first time relay (T1) which are connected in series;

the reset button (SB 1), a normally open contact of a second relay (K2) and the alarm lamp are connected in series, and the electric whistle and the alarm lamp are connected in parallel;

a coil winding of the second time relay (T2), a delay closed contact of the first time relay (T1) and a normally closed contact of the second relay (K2) are connected in series, and an instantaneous action normally open contact of the second time relay (T2), a delay closed contact of the first time relay (T1) and a normally closed contact of the second relay (K2) which are connected in series are connected in parallel;

the time delay disconnection contact of the second time relay (T2) is connected in series with the booster pump (450).

4. The cable duct corridor passageway breaks location early warning device according to claim 1, characterized in that:

the middle part of the marking pile (100) is provided with a cavity, the bottom of the cavity is triangular, and the side wall of the cavity (110) is provided with air holes (120) which incline downwards.