CN113432652A

CN113432652A - Cable pit comprehensive monitoring detection device

Info

Publication number: CN113432652A
Application number: CN202110815678.5A
Authority: CN
Inventors: 毛章波
Original assignee: Zhejiang Dinghao Electric Co ltd
Current assignee: Zhejiang Dinghao Electric Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-09-24

Abstract

The invention discloses a cable trench comprehensive monitoring and detecting device, which comprises a cable trench cover plate, wherein a monitoring assembly is slidably installed at the middle position in the cable trench cover plate, four corners of the bottom surface of the cable trench cover plate are respectively provided with two groups of lifting screw rods and two groups of guide rods, the surface of each lifting screw rod is in threaded connection with a first threaded sleeve, the first threaded sleeve is rotatably installed in the cable trench cover plate, the surface of each guide rod is slidably provided with a linear bearing, the linear bearings are in interference fit with mounting holes in the cable trench cover plate, the monitoring assembly comprises a movable bottom plate, a liquid level monitoring instrument, a temperature and humidity monitoring instrument and smoke detection monitoring equipment, the movable bottom plate is slidably installed on the cable trench cover plate, and the liquid level monitoring instrument, the temperature and humidity monitoring instrument and the smoke detection equipment are arranged to realize real-time alarm of the excessive combustible gas concentration, the smoke concentration and the cable trench water level, and the timely treatment of the alarm condition is realized through the linkage control of systems such as a drainage assembly, a fire extinguishing assembly, a flow guide assembly and the like.

Description

Cable pit comprehensive monitoring detection device

Technical Field

The invention relates to the technical field of cable ducts of transformer substations, in particular to a comprehensive monitoring and detecting device for a cable duct.

Background

The cable trench of the transformer substation is a channel for connecting various cables to enter and exit through transformer substation equipment. The cable laying device is generally built underground a transformer substation and mainly connected with a high-pressure chamber, a control chamber and auxiliary facilities for communication, telecontrol and the like, an outlet is formed in the joint, and a rack for building and supporting cables is arranged in the cable laying device and used for orderly arranging construction cables. The outdoor cable pit of transformer substation's advantage has: the cable is convenient to lay; the cable is protected, and the service life of the cable is prolonged; the cable trench keeps certain dryness, improves the grounding resistance, reduces the grounding possibility and ensures the safe operation of electric power.

The power enterprises are required to provide high-quality, continuous and reliable electric energy products for the vast customers. The national power grid company power supply service 'ten commitments', the company looks at the belief as life, carries forward the purpose, and the belief is held, so that the customer satisfaction is continuously improved, and the value is continuously created for the customer. The power supply reliability is required to be not less than 99.90%. According to statistics, in 2014, many power failure accidents occur successively in the Kunju transformer substation due to the fact that air in a cable duct is moist, serious economic loss is caused, a transformer operation and inspection room is required to find problems, and the occurrence of the problems is avoided. The moisture in the environment of the cable trench is a direct cause of several accidents in the kuchen substation, and therefore, it is necessary to explore how the cable trench is in a moisture state.

Cable pit environment is complicated in the transformer substation, can't know the ditch internal environment after the apron is covered at ordinary times, and under the too heavy condition of traditional apron, the staff hardly opened the apron and monitored the cable pit environment, but has numerous cables in the cable pit, concerns the normal operating of transformer substation, so the monitoring of cable pit condition is just very important. Disclosure of Invention

The invention aims to provide a cable trench comprehensive monitoring and detecting device which can effectively monitor and conveniently operate the interior of a cable trench under the condition of not opening a cover plate so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a cable trench comprehensive monitoring and detecting device comprises a cable trench cover plate, wherein a monitoring assembly is slidably mounted in the cable trench cover plate at the middle position, two groups of lifting screw rods and two groups of guide rods are respectively arranged at four corners of the bottom surface of the cable trench cover plate, the surface of each lifting screw rod is in threaded connection with a first threaded sleeve, the first threaded sleeves are rotatably mounted in the cable trench cover plate, linear bearings are slidably mounted on the surfaces of the guide rods, and the linear bearings are in interference fit with mounting holes in the cable trench cover plate;

the monitoring subassembly is including removing bottom plate, liquid level monitoring instrument, humiture monitoring instrument and smoke and feel monitoring facilities, remove bottom plate slidable mounting in cable trench cover, the equal fixed mounting of liquid level monitoring instrument and humiture monitoring instrument is your in removal bottom plate upper surface, and the monitor of liquid level monitoring instrument and humiture monitoring instrument equally divide and do not run through in removing bottom plate, cable trench cover and extending to the cable pit.

The utility model discloses a cable trench cover plate, including cable trench cover plate, wind-guiding subassembly, air inlet pipe, air outlet pipe, air inlet pipe, air outlet pipe, air outlet.

The bottom ends of the lifting screw rods and the two groups of guide rods extend into a cable groove, connecting plates are fixedly mounted at the bottom ends of the two groups of lifting screw rods and the two groups of guide rods, and the connecting plates are fixedly connected into the cable groove through foundation bolts.

The first motor is fixedly mounted on one side of the upper surface of the cable trench cover plate, the output shaft end of the first motor is fixedly mounted with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

Two sets of backup pads are installed to removal bottom plate bottom symmetry, the spout has been seted up to the position placed in the middle in the cable trench cover, the backup pad both sides all are provided with T type slider, spout both sides inner wall all seted up with T type slider clearance fit's T type guide slot.

The cable trench cover comprises a cable trench cover body and is characterized in that a driving assembly is arranged at the bottom of the cable trench cover body and comprises a second motor and a spiral guide rod, the spiral guide rod is rotatably installed on the lower surface of the cable trench cover body, the second motor is fixedly connected with one end of the spiral guide rod, and the second motor is fixedly installed on the lower surface of the cable trench cover body.

Two groups of second threaded sleeves are rotatably mounted in the supporting plate through deep groove ball bearings, and inner holes of the second threaded sleeves are in threaded connection with the surfaces of the spiral guide rods.

The inner walls of the two sides of the sliding groove are respectively fixedly connected with the piano plates on the two sides of the movable bottom plate, the ball chains are arranged on the two sides of the piano plates, the ball chains are installed in the T-shaped guide grooves in a rolling mode, and the ball chains are in clearance fit with the T-shaped guide grooves.

The liquid level monitoring instrument temperature and humidity monitoring instrument and the smoke sensing monitoring equipment are in electric signal connection with the cable trench integrated system master control unit, the cable trench integrated system master control unit carries out wireless transmission on electric signals through GPRS, the cable trench integrated system master control unit comprises a controller, a power source, a memory, a timing module, a driving circuit, an alarm module and a wireless communication module, and the first motor, the second motor and the driving circuit are electrically connected.

Wherein, liquid level monitoring instrument and smoke are felt monitoring facilities and are connected with drainage subassembly and subassembly of putting out a fire in proper order the signal of telecommunication.

The width of the diversion tuyere is smaller than that of the cable trench, and the distance between the outer wall of the diversion tuyere and the inner wall of the cable trench is controlled to be 50-80 cm.

In summary, due to the adoption of the technology, the invention has the beneficial effects that:

1. according to the invention, the liquid level monitoring instrument, the temperature and humidity monitoring instrument and the smoke detection monitoring equipment are arranged to realize real-time alarm of the concentration of combustible gas, the concentration of smoke and the overproof accumulated water level of a cable trench, and the alarm condition is timely processed by linkage control of a drainage assembly, a fire extinguishing assembly, a ventilation assembly and other systems;

2. according to the invention, the controller controls the electric control cover plate to lift according to the use requirement, and the workload of the transformer substation workers is greatly reduced.

3. According to the invention, the driving assembly is arranged below the bottom plate bearing the liquid level monitoring instrument, the temperature and humidity monitoring instrument and the smoke detection monitoring equipment, so that the liquid level monitoring instrument, the temperature and humidity monitoring instrument and the smoke detection monitoring equipment are driven to move in the cable trench, and therefore, the detection range and the detection accuracy are increased.

Drawings

FIG. 1 is a schematic sectional front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic side view of the sliding structure of the monitoring assembly of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1 according to the present invention;

FIG. 5 is a control block diagram of the cable pit integrated system of the present invention;

FIG. 6 is a schematic view of a blower fan mounting structure according to the present invention;

fig. 7 is a schematic perspective view of embodiment 4 of the present invention.

In the figure: 1. a cable trench cover plate; 2. a monitoring component; 201. a liquid level monitoring instrument; 202. (ii) a 203. Moving the base plate; 204. a smoke detection device; 3. a lifting screw rod; 301. a first threaded sleeve; 302. a first bevel gear; 303. a first motor; 304. a second bevel gear; 4. a guide bar; 401. a linear bearing; 5. a connecting plate; 6. a support plate; 601. a T-shaped slider; 602. a second threaded sleeve; 7. a chute; 701. a T-shaped guide groove; 8. a drive assembly; 801. a second motor; 802. a spiral guide rod; 9. a piano plate; 10. a flow guide assembly; 1001. an air inlet pipe; 1002. an air outlet pipe; 1003. a flow guiding fan; 1004. an electromagnetic valve; 1005. a flow guiding air nozzle; 11. a base; 12. an intelligent cover plate main body; 1201. a cover plate; 13. an electric push rod; 14. an infrared sensor; 15. a smoke sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

The invention provides a cable trench comprehensive monitoring and detecting device as shown in figures 1-6, which comprises a cable trench cover plate 1, wherein four corners of the bottom surface of the cable trench cover plate 1 are respectively provided with two groups of lifting screw rods 3 and two groups of guide rods 4, the surface of each lifting screw rod 3 is in threaded connection with a first threaded sleeve 301, the first threaded sleeves 301 are rotatably arranged in the cable trench cover plate 1, the surface of each guide rod 4 is slidably provided with a linear bearing 401, the linear bearings 401 are in interference fit with mounting holes in the cable trench cover plate 1, the bottom ends of the two groups of lifting screw rods 3 and the two groups of guide rods 4 extend into a cable trench, the bottom ends of the two groups of lifting screw rods 3 and the two groups of guide rods 4 are fixedly provided with a connecting plate 5, the connecting plate 5 is fixedly connected into the cable trench through foundation bolts, the surface of the first threaded sleeve 301 is fixedly provided with a first bevel gear 302, one side of the upper surface of the cable trench cover plate 1 is fixedly provided with a first motor 303, a second bevel gear 304 is fixedly mounted at an output shaft end of the first motor 303, the second bevel gear 304 is meshed with the first bevel gear 302, two groups of lifting screw rods 3 and two groups of guide rods 4 are arranged, the first motor 303 is started to drive the second bevel gear 304 and the first bevel gear 302 to drive the cable trench cover plate 1 to be opened or closed, convenience is provided for operators, manpower is saved, and the controller controls the cable trench cover plate to reduce potential safety hazards caused by random turning of the cover plate in the prior art.

The monitoring component 2 is slidably mounted at the central position in the cable trench cover plate 1, the monitoring component 2 comprises a movable bottom plate 203, a liquid level monitoring instrument 201, a temperature and humidity monitoring instrument 202 and a smoke detection monitoring device 204, the movable bottom plate 203 is slidably mounted on the cable trench cover plate 1, the liquid level monitoring instrument 201 and the temperature and humidity monitoring instrument 202 are both fixedly mounted on the upper surface of the movable bottom plate 203, and the monitoring probes of the liquid level monitoring instrument 201 and the temperature and humidity monitoring instrument 202 respectively penetrate through the movable bottom plate 203 and the cable trench cover plate 1 and extend into the cable trench, the liquid level monitoring instrument 201, the temperature and humidity monitoring instrument 202 and the smoke sensation monitoring instrument 204 are sequentially arranged to realize real-time alarm of the concentration of combustible gas, the concentration of smoke and the overproof water level of a cable trench, and the timely treatment of the alarm condition is realized through the linkage control of systems such as a drainage component, a fire extinguishing component, a ventilation component and the like.

Two groups of supporting plates 6 are symmetrically installed at the bottom of the movable bottom plate 203, a sliding groove 7 is formed in the cable trench cover plate 1 at the central position, T-shaped sliding blocks 601 are arranged on two sides of each supporting plate 6, T-shaped guide grooves 701 in clearance fit with the T-shaped sliding blocks 601 are formed in the inner walls of two sides of each sliding groove 7, the inner walls of two sides of each sliding groove 7 are fixedly connected with the two sides of the movable bottom plate 203 respectively, ball chains are arranged on two sides of each wind instrument plate 9 and are arranged in the T-shaped guide grooves 701 in a rolling mode, the ball chains are in clearance fit with the T-shaped guide grooves 701, in order to ensure monitoring spaces of monitoring equipment such as the liquid level monitoring instrument 201, the temperature and humidity monitoring instrument 202 and the smoke detection instrument 204, the sliding grooves 7 are formed in the cable trench cover plate 1 at the central position, the movable bottom plate 203 is used for driving the detection equipment to periodically reciprocate in the cable trench, and therefore the wind instrument plates 9 are arranged between the sliding grooves 7 and the movable bottom plate 203, the tight laminating setting of sealed pad and cable pit upper surface of 1 bottoms of cooperation cable pit apron can not interfere the reciprocating motion of check out test set.

The utility model discloses a cable trench cover 1 bottom is provided with drive assembly 8, drive assembly 8 includes second motor 801 and spiral guide pole 802, spiral guide pole 802 rotates and installs in 1 lower surface of cable trench cover, second motor 801 and spiral guide pole 802 one end fixed connection, and second motor 801 fixed mounting in 1 lower surface of cable trench cover, rotate through deep groove ball bearing in the backup pad 6 and install two sets of second thread bush 602, second thread bush 602 hole threaded connection is on spiral guide pole 802 surface, and it is rotatory to start second motor 801 and drive spiral guide pole 802 to through drive backup pad 6, thereby drive liquid level monitoring instrument 201, temperature and humidity monitoring instrument 202 and smoke and feel monitoring facilities 204 reciprocating motion in the cable trench, increase monitoring space.

The liquid level monitoring instrument 201, the temperature and humidity monitoring instrument 202 and the smoke detection monitoring equipment 204 are all in electric signal connection with a cable trench integrated system master control unit, the cable trench integrated system master control unit is used for carrying out wireless transmission on electric signals through GPRS, the cable trench integrated system master control unit comprises a controller, a power supply, a storage, a timing module, a driving circuit, an alarm module and a wireless communication module, the first motor 303, the second motor 801 and the driving circuit are electrically connected, the liquid level monitoring instrument 201, the temperature and humidity monitoring instrument 202 and the smoke detection monitoring equipment 204 are sequentially in electric signal connection with a drainage component, a ventilation component and a fire extinguishing component, wherein the liquid level monitoring instrument 201 can be an XM-L11 floating ball continuous liquid level meter, and can also change liquid level detection equipment of other models according to the use environment thereof, and information is collected for the whole cable trench through the integration of the monitoring equipment, and the data is gathered by the controller and then fed back to the background for monitoring, and meanwhile, the cable trench is effectively operated by the background.

The cable trench cover plate comprises a cable trench cover plate 1, wherein a diversion assembly 10 is arranged on one side of the cable trench cover plate 1, the diversion assembly 10 comprises an air inlet pipe 1001, an air outlet pipe 1002 and a diversion fan 1003, the diversion fan 1003 is fixedly installed outside the cable trench and fixedly communicated with the air outlet pipe 1002 through a steel wire hose, an electromagnetic valve 1004 is fixedly communicated with the pipe orifice of the air outlet pipe 1002, the electromagnetic valve 1004 is electrically connected with the diversion fan 1003, diversion air nozzles 1005 are fixedly communicated with one ends of the air inlet pipe 1001 and the air outlet pipe 1002, which are positioned inside the cable trench, respectively, the cross sections of the two diversion air nozzles 1005 are arranged in an L shape, the opening directions of the two diversion air nozzles 1005 are oppositely arranged, a temperature and humidity monitoring instrument 202 is electrically connected with the diversion fan 1003 is used for feeding back a controller 1003 when the temperature and humidity state in the cable trench is detected by the temperature and humidity monitoring instrument 202, data is collected and then analyzed to determine whether the diversion fan 1003 is needed to conduct air in the cable trench, if need dredge, diversion fan 1003 and solenoid valve 1004 are opened simultaneously, dredge the air of cable pit through two sets of diversion tuyeres 1005, and during the installation, the air humidity of environment is seted up to the cable pit to the technical staff accessible in this field, decides whether add the heater between diversion fan 1003 and air-supply line 1001, can also carry out drying process to the air in the cable pit when dredging the air to the cable pit.

This application can reach backstage control APP with on-the-spot monitoring data, still can send alarm information to operation management personnel cell-phone with the SMS mode to relevant drainage subassembly, ventilation module and the subassembly of putting out a fire of in time control protect in time the cable.

Example 2

First thread bush 301 fixed surface installs first synchronous pulley, 1 upper surface one side fixed mounting of cable trench cover has first motor 303, the output shaft fixed mounting of first motor 303 has second synchronous pulley, connect in first synchronous pulley and the second synchronous pulley pass through synchronous belt drive, wherein vertical motor is chooseed for use to first motor 303.

Example 3

The cable trench cover 1 bottom is provided with drive assembly 8, drive assembly 8 includes electronic slip table and linear guide, the 1 fixed surface connection under electronic slip table and linear guide's the slider cable trench cover, it can to drive the monitoring facilities removal through electronic slip table direct drive removal bottom plate 203.

Example 4

The invention provides an intelligent cover plate of a cable trench as shown in fig. 7, which comprises a base 11, an intelligent cover plate main body 12 and two groups of electric push rods 13, wherein the base 11 is a profile welding type frame, so that the intelligent cover plate main body 12 is conveniently arranged in the cable trench and supported; the intelligent cover plate main body 12 comprises a cover plate 1201, and a temperature and humidity monitor, an intelligent control system and an internet of things module which are arranged on the lower surface of the cover plate 1201, and the internet of things module is used for remotely transmitting and storing equipment information in a cloud server or remotely controlling the equipment information through a mobile phone APP; the intelligent control system is respectively in electric signal connection with the temperature and humidity monitor, the Internet of things module, the cooling fan and the infrared sensor 14; be provided with radiator fan in the base 11, apron 1201 one side and 11 one sides of base rotate to be connected, electric putter 13's tailstock pin joint is in base 11 one side, electric putter 13's output axle head and apron 1201 lower surface pin joint, apron 1201 lower surface fixed mounting placed in the middle of has infrared sensor 14, adopt infrared sensor to monitor the toy invasion through infrared or microwave, detect the toy invasion and send out the warning when intelligent control system, and the propelling movement warning message gives the customer on APP.

The frame of apron 1201 is stainless steel frame structure, be provided with toughened glass in the stainless steel frame, utilize electric putter 13 to promote apron 1201 to go up and down, adopt high accuracy temperature and humidity control collector to carry out the humiture collection in to the cable pit, and carry out early warning and warning through intelligent control system, the apron 1201 lower surface is located 14 one side fixed mounting of infrared sensor 15, smog inductor 15 and intelligent control system signal connection, detect smoke system when the system and send out the warning, pass through thing networking module propelling movement warning message on APP and give the customer.

Set up level sensor in the cable pit, level sensor and intelligent control system signal of telecommunication are connected, detect the ponding degree of depth in the ponding hole in the cable pit through level sensor, and when the ponding degree of depth surpassed the preset limit value, intelligent control system sent and reports an emergency and asks for help or increased vigilance, can set up the automatic control water pump and start the drainage to the propelling movement is reported an emergency and asked for help or increased vigilance information and is given the customer on APP.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a cable pit comprehensive monitoring detection device, includes cable pit apron (1), its characterized in that: a monitoring assembly (2) is slidably mounted in the cable trench cover plate (1) at the central position, two groups of lifting screw rods (3) and two groups of guide rods (4) are respectively arranged at four corners of the bottom surface of the cable trench cover plate (1), a first thread bush (301) is in threaded connection with the surface of each lifting screw rod (3), the first thread bush (301) is rotatably mounted in the cable trench cover plate (1), a linear bearing (401) is slidably mounted on the surface of each guide rod (4), and the linear bearing (401) is in interference fit with a mounting hole in the cable trench cover plate (1);

the monitoring assembly (2) comprises a movable bottom plate (203), a liquid level monitoring instrument (201), a temperature and humidity monitoring instrument (202) and smoke sensing monitoring equipment (204), the movable bottom plate (203) is slidably mounted on the cable trench cover plate (1), the liquid level monitoring instrument (201) and the temperature and humidity monitoring instrument (202) are fixedly mounted on the upper surface of the movable bottom plate (203), and monitoring probes of the liquid level monitoring instrument (201) and the temperature and humidity monitoring instrument (202) respectively penetrate through the movable bottom plate (203) and the cable trench cover plate (1) and extend into the cable trench;

cable trench cover 1 one side is provided with water conservancy diversion subassembly (10), water conservancy diversion subassembly (10) include air-supply line (1001), play tuber pipe (1002) and water conservancy diversion fan (1003), water conservancy diversion fan (1003) fixed mounting is outside the cable trench, through the fixed intercommunication of steel wire hose and play tuber pipe (1002), the fixed intercommunication of the mouth of pipe that goes out tuber pipe (1002) has solenoid valve (1004), solenoid valve (1004) and water conservancy diversion fan (1003) electric connection, air-supply line (1001) and play tuber pipe (1002) are located the inside one end of cable trench and all are fixed the intercommunication and have water conservancy diversion tuyere (1005), and are two sets of the cross-section of water conservancy diversion tuyere (1005) is the setting of L type, and the opening direction of two sets of water conservancy diversion tuyeres (1005) sets up relatively, humiture monitoring instrument (202) and water conservancy diversion fan (1003) electric connection.

2. The cable trench comprehensive monitoring and detecting device according to claim 1, characterized in that: two sets of lift lead screw (3) and two sets of guide bar (4) bottom all extend to the cable ditch inslot, and two sets of lift lead screw (3) and two sets of guide bar (4) bottom fixed mounting have connecting plate (5), connecting plate (5) are through rag bolt fixed connection in the cable ditch inslot.

3. The cable trench comprehensive monitoring and detecting device according to claim 1, characterized in that: first bevel gear (302) is fixedly installed on the surface of first thread bush (301), first motor (303) is fixedly installed on one side of the upper surface of cable trench cover plate (1), a second bevel gear (304) is fixedly installed on the output shaft end of first motor (303), and second bevel gear (304) and first bevel gear (302) are meshed.

4. The cable trench comprehensive monitoring and detecting device according to claim 3, wherein: two sets of backup pads (6) are installed to removal bottom plate (203) bottom symmetry, spout (7) have been seted up to position placed in the middle in cable trench cover (1), backup pad (6) both sides all are provided with T type slider (601), spout (7) both sides inner wall all seted up with T type slider (601) clearance fit's T type guide slot (701).

5. The cable trench comprehensive monitoring and detecting device according to claim 4, wherein: the cable trench cover plate (1) bottom is provided with drive assembly (8), drive assembly (8) include second motor (801) and spiral guide arm (802), spiral guide arm (802) rotate to be installed in cable trench cover plate (1) lower surface, second motor (801) and spiral guide arm (802) one end fixed connection, and second motor (801) fixed mounting in cable trench cover plate (1) lower surface.

6. The cable trench comprehensive monitoring and detecting device according to claim 5, wherein: two groups of second threaded sleeves (602) are rotatably mounted in the supporting plate (6) through deep groove ball bearings, and inner holes of the second threaded sleeves (602) are connected to the surfaces of the spiral guide rods (802) in a threaded mode.

7. The cable trench comprehensive monitoring and detecting device according to claim 4, wherein: the two-side inner wall of the sliding groove (7) is respectively fixedly connected with the two-side wind instrument board (9) of the movable bottom board (203), the two sides of the wind instrument board (9) are respectively provided with a ball chain, the ball chain is installed in the T-shaped guide groove (701) in a rolling mode, and the ball chain is in clearance fit with the T-shaped guide groove (701).

8. The cable trench comprehensive monitoring and detecting device according to claim 3, wherein: liquid level monitoring instrument (201), humiture monitoring instrument (202) and smoke and feel monitoring facilities (204) all with cable pit integrated system total accuse unit signal connection, cable pit integrated system total accuse unit carries out wireless transmission through GPRS to the signal of telecommunication, cable pit integrated system total accuse unit includes controller, power, memory, timing module, drive circuit, alarm module and wireless communication module, first motor (303), second motor (801) and drive circuit electric connection.

9. The cable trench comprehensive monitoring and detecting device according to claim 1, characterized in that: the liquid level monitoring instrument (201) and the smoke detection monitoring equipment (204) are sequentially connected with a drainage assembly and a fire extinguishing assembly through electric signals.

10. The cable trench comprehensive monitoring and detecting device according to claim 1, characterized in that: the width of the diversion air nozzle (1005) is smaller than that of the cable trench, and the distance between the outer wall of the diversion air nozzle (1005) and the inner wall of the cable trench is controlled to be 50-80 cm.