CN114576569A

CN114576569A - Portable natural gas pipeline device that leaks hunting

Info

Publication number: CN114576569A
Application number: CN202210196640.9A
Authority: CN
Inventors: 秦红利
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-06-03

Abstract

The invention discloses a portable natural gas pipeline leakage detection device, which comprises a bottom plate, a box body, a slide rail and a telescopic pull rod, wherein four corners of the bottom plate are respectively provided with universal wheels, the slide rail is symmetrically arranged in front of and behind the upper surface of the bottom plate, the box body is slidably arranged on the slide rail, the telescopic pull rod is arranged at the top of the rear side of the box body, a second detection hole is arranged in the center of the bottom plate, a cleaning unit is arranged at the bottom of the second detection hole, the portable natural gas pipeline leakage detection device is provided with an assembled detection device, can detect leakage of some indoor or outdoor higher natural gas pipelines, is convenient to carry and move, can carry out routing inspection along the upper part of the pipelines, can directly carry out punching detection on some places needing punching leakage detection, has accurate detection value and higher safety, can purify the gas to be detected, and avoid the detection personnel to inhale toxic and harmful gas.

Description

Portable natural gas pipeline device that leaks hunting

Technical Field

The invention relates to the technical field of natural gas pipeline detection, in particular to a portable natural gas pipeline leakage detection device.

Background

The natural gas mainly comprises methane (85%), a small amount of ethane (9%), propane (3%), nitrogen (2%) and butane (1%), the natural gas is an important natural resource and one of indispensable resources in daily life of people, the natural gas distribution in China is very different due to the difference of geographical environments, and the gas transmission by using a natural gas pipeline is an effective method for solving the difference between the natural gas production place and the land, and the natural gas pipeline accounts for about half of the total length of the pipeline in the world;

at present, most of natural gas pipeline detection is performed by a detection person holding a leakage detection instrument to perform leakage detection work on natural gas pipeline interfaces at lower positions indoors and outdoors, and the detection of the natural gas pipelines at the higher positions needs to be performed by means of an external ladder or by binding the detection instrument on a stick, so that time and labor are wasted, the labor intensity of the working person is greatly increased, and the detection efficiency is reduced; and when the leakage happens to the outdoor buried natural gas pipeline:

1. under the condition of a soft ground or a meadow of loose soil, leaked gas is easy to diffuse to the ground, people can patrol along the upper part of a pipeline and can accurately detect the position of a leakage point according to the value change detected by a natural gas leakage detection instrument, and the detection equipment which is convenient to carry at present needs to manually hold a detection probe to detect the ground, so that the operation mode is not only low in efficiency, but also poor in detection accuracy;

2. in most cases, the gas pipeline is buried under a hard road surface (such as a cement road surface and an asphalt road surface), at the moment, the gas cannot easily escape out of the ground after leakage, and generally accumulates along gaps of backfilled soil or underground pipeline ditches continuously, at the moment, a detection person can insert a detection hose into the pipeline ditches for detection by holding a pump-suction type natural gas detection instrument by hand, and the detection mode enables the detection person to easily suck toxic and harmful gas, so that accidents occur;

3. the method comprises the steps of drilling and leakage detection, wherein a detector firstly finds out the direction of a gas transmission pipeline, then drills a hole on the ground at certain intervals, detects the hole by using a natural gas leakage detection instrument, judges a more accurate leakage point according to the odor intensity, and then searches for the leakage point by breaking the ground, and the method needs the detector to carry a large number of detection devices so as to accurately detect the leakage point;

therefore, a portable natural gas pipeline leakage detection device is provided.

Disclosure of Invention

In view of the problems in the prior art, the invention discloses a portable natural gas pipeline leakage detection device which adopts the technical scheme that the leakage detection device comprises a bottom plate, a box body, slide rails and a telescopic pull rod, wherein four corners of the bottom plate are respectively provided with universal wheels, the slide rails are symmetrically arranged in front of and behind the upper surface of the bottom plate, the box body is arranged on the slide rails in a sliding manner, the telescopic pull rod is arranged at the top of the rear side of the box body, the center of the bottom plate is provided with a second detection hole, the bottom of the second detection hole is provided with a cleaning unit, the left end and the right end of the bottom of the box body are respectively provided with a first detection hole and a third detection hole, the first detection hole and the third detection hole are on the same central axis line with the second detection hole, a detection unit and a filtering unit are arranged right above the first detection hole, and a drilling unit is arranged right above the second detection hole, an extension box is arranged right above the drilling unit, the extension box is fixedly arranged at the right end of the top of the box body, a push-pull rod is rotatably arranged between lugs arranged at the front end and the rear end of the top of the left side and the right side of the box body, a second partition plate is transversely arranged at the rear end of the inner side of the box body, a storage battery is arranged between the bottom of the rear side of the second partition plate and the box body, heat dissipation holes are arranged at the rear side of the storage battery in an equidistant array manner, a charging interface is arranged at the right end of the storage battery, the charging interface is positioned at the right end of the box body, an air pump is arranged on an extension plate arranged at the top of the storage battery, exhaust pipes are symmetrically arranged at the front end and the rear end of the left end of the air pump and are respectively communicated with the filtering unit and the cleaning unit, an air inlet pipe is arranged at the rear side of the right end of the air pump, and a storage box is arranged at the right end of the air pump, the storage box is slidably mounted in a rectangular groove formed in the top of the rear end of the box body, a second handle is arranged at the top of the storage box, a supporting unit, a connecting unit and a telescopic unit are arranged in the storage box, a first partition plate is arranged in the middle of the front side of the second partition plate, a first supporting plate and a second supporting plate are arranged at the top of the left side of the first partition plate, the second supporting plate is located above the first supporting plate, a second display is arranged at the left end of the front side surface of the box body, and fixing units are arranged at the bottoms of the left side and the right side of the box body; the device is convenient to move by the arrangement of the universal wheels, the detection personnel can conveniently pull the box body to move by the arrangement of the telescopic pull rod, the bottom dust of the bottom plate can be cleaned by the cleaning unit arranged at the bottom of the second detection hole, the detection unit, the filtering unit and the drilling unit can detect air leakage to the buried natural gas pipeline through the second detection hole by the arrangement of the extension box by the arrangement of the first detection hole, the third detection hole and the second detection hole on the same central axis, the collision between the drilling unit and the top of the box body can be avoided by the arrangement of the extension box, the punching stroke of the drilling unit can be simultaneously extended, the box body on the bottom plate can be conveniently pushed and pulled by the detection personnel by the arrangement of the push rod, and the second partition plate, the first support plate and the second support plate are matched, the internal area of the box body is separated, the storage battery is arranged, electric power can be provided for the device, the storage battery can be conveniently charged by detection personnel through the arrangement of a charging interface, the air pump can provide high-pressure air flow for the filtering unit and the cleaning unit, the support unit, the connecting unit and the telescopic unit can be stored and stored through the arrangement of the storage box, the support unit, the connecting unit and the telescopic unit are combined, so that the detection personnel can conveniently detect leakage of the natural gas pipeline at outdoor or indoor higher positions, the second display is arranged, the gas value detected by the detection unit can be displayed, and the detection personnel can conveniently fix the box body and the bottom plate after moving through the arrangement of the fixing unit;

wherein: the air pump is electrically connected with the input end of the second display, and the input end of the single chip microcomputer is electrically connected with the output end of the storage battery.

According to the preferred technical scheme of the portable natural gas pipeline leakage detection device, the supporting unit comprises a connecting rod, limiting rings, a connecting sleeve, a positioning block and an arm supporting plate, the connecting rod is of a Z-shaped structure and is arranged inside the storage box, the arm supporting plate is arranged at one end of the connecting rod, the connecting sleeve is slidably mounted at the other end of the connecting rod and is located between the two limiting rings arranged on the connecting rod, the limiting rings respectively limit the connecting sleeve, the positioning block is arranged on the surface of the end portion of the other end of the connecting rod, and the positioning block is of a cross-shaped structure. Through the setting of arm layer board, can support measurement personnel's arm, be "Z" shape structure through the connecting rod, make measurement personnel can carry out the gripping to the middle part of connecting rod, through the setting of adapter sleeve, can be connected with the linkage unit, through the setting of spacing ring, can avoid adapter sleeve and connecting rod to take place to break away from, through the setting of locating piece, when bracketing unit is connected with the linkage unit, can fix a position the linkage unit, avoid the linkage unit to follow the bracketing unit simultaneously and rotate.

As a preferred technical scheme of the portable natural gas pipeline leakage detection device, the connection unit comprises a detection box, a buzzer, a battery bin cover plate, a battery bin, a first display and a connection screw rod, the detection box is arranged inside the storage box, the battery bin is arranged at the left end of the top of the detection box, a battery is arranged in the battery bin, the battery bin cover plate is arranged at the top of the battery bin, the buzzer is arranged at the left side of the battery bin, the first display is arranged at the right end of the top of the detection box, the connection screw rod is arranged in the center of the left side of the detection box, a positioning groove formed in the end portion of the left side of the connection screw rod is in sliding connection with the positioning block, the connection screw rod is in threaded connection with the inner side of the connection sleeve, and the buzzer is electrically connected with the input end of the first display and the output end of the battery in the battery bin. Through buzzer and the first display that sets up on the detection case, can show or report to the police to the detection data of the gas detection appearance in the flexible unit, through the battery of installation in battery compartment apron and battery compartment and the battery compartment, can provide electric power for buzzer, first display and gas detection appearance, through connecting screw's setting, can make things convenient for the linkage unit to be connected with the bracketing unit.

As a preferred technical scheme of the portable natural gas pipeline leakage detection device, the telescopic unit comprises a rotary cylinder, a detection cylinder, a fixed cylinder, a sliding block, a sliding groove, an annular clamping groove, a dust screen, an annular clamping block, a spiral sliding groove, a detection bin and a gas detector, the fixed cylinder is fixedly arranged at the right center of the detection box, the sliding grooves are symmetrically formed in the front and back of the middle of the fixed cylinder, the sliding grooves are Z-shaped structures, the annular clamping groove is formed in the left end of the fixed cylinder and is in sliding connection with the annular clamping block arranged on the rotary cylinder, the spiral sliding groove is formed in the inner side of the rotary cylinder, the detection cylinder is slidably arranged on the inner side of the fixed cylinder, the sliding block arranged at the bottom of the detection cylinder is respectively in sliding connection with the sliding groove and the inner side of the spiral sliding groove, the detection bin is arranged at the right end of the detection cylinder, the gas detector is arranged in the detection bin, the right-hand member that detects the storehouse is provided with the dust screen, the output of battery in the battery compartment is connected to gaseous detector's input electricity. Through annular fixture block and ring groove's cooperation setting, make rotatory section of thick bamboo rotate along the solid fixed cylinder, cooperate through slider on spiral spout and the detection cylinder, make the steerable detection cylinder of rotatory section of thick bamboo go up and down, simultaneously through the setting of solid fixed cylinder and rotatory section of thick bamboo, when the detection cylinder withdrawal, can protect the gas detection appearance on the detection cylinder, through the gas detection appearance that sets up in the detection storehouse, thereby make things convenient for the measurement personnel to carry out the leak hunting detection to outdoor or indoor natural gas line, through the setting of dust screen, can avoid the dust to get into in the detection storehouse.

As a preferred technical scheme of the portable natural gas pipeline leakage detection device, the detection unit comprises a first motor, a crankshaft, a second connecting rod, a first fixing plate, a spherical connecting piece, a piston, a pumping cylinder, a conical funnel, a blocking ball, a first connecting pipe, a natural gas sensor, a second connecting pipe, a gas filter box, an activated carbon filter plate, an electric telescopic rod, a fixed seat, a connecting plate, a telescopic cylinder and a one-way valve, wherein the pumping cylinder is arranged at the center of a first supporting plate and the center of a second supporting plate, the conical funnel is arranged at the center of the interior of the pumping cylinder, the blocking ball is movably arranged in the conical funnel, the piston is slidably arranged at the top of the inner side of the pumping cylinder, the spherical connecting piece is slidably arranged in a spherical groove arranged at the top of the piston, the second connecting rod is arranged at the top of the spherical connecting piece, the crankshaft is rotatably connected at the top of the second connecting rod, the left end and the right end of the crankshaft are respectively connected with a first fixing plate arranged on a second supporting plate in a rotating mode, a first motor is arranged on the front side of one first fixing plate, an output shaft of the first motor is fixedly connected with one end of the crankshaft, a first connecting pipe is arranged in the middle of the pump suction tube and is positioned at the top of the conical funnel, a one-way valve is arranged inside the first connecting pipe, the other end of the first connecting pipe penetrates through the first supporting plate and is communicated with one end of a second connecting pipe, a natural gas sensor is arranged between the first connecting pipe and the second connecting pipe, the other end of the second connecting pipe is communicated with a gas filter box arranged at the left end of the top of the first supporting plate, activated carbon filter plates are arranged inside the gas filter box in an array mode at equal intervals, and the other end of the gas filter box is communicated with an exhaust window arranged on the left side of the box body, electric telescopic handle sets up the bottom at the pump suction tube, electric telescopic handle passes through the fixing base and inhales the outside fixed connection of a pump suction tube, electric telescopic handle's flexible end passes through the connecting plate and inhales the flexible section of thick bamboo outside fixed connection that the bobbin base portion set up with the pump, flexible section of thick bamboo is concentric with first inspection hole, the output of singlechip is connected with electric telescopic handle's input electricity to first motor, the input of singlechip is connected to natural gas sensor's output electricity. The distance between the pump suction cylinder and a detection hole site can be shortened through the arrangement between the electric telescopic rod, the fixed seat, the connecting plate and the telescopic cylinder, so that the detection precision of natural gas is improved, the second connecting rod drives the piston to move up and down along the pump suction cylinder along with the rotation of the crankshaft through the matching arrangement between the first motor, the crankshaft, the second connecting rod, the first fixed plate, the spherical connecting piece and the piston, the backflow of the gas in the first connecting pipe into the pump suction cylinder can be effectively avoided through the check valve arranged in the first connecting pipe, when the piston moves upwards, the negative pressure is formed in the pump suction cylinder, so that the blocking ball is jacked upwards by the external gas and enters the interior of the pump suction cylinder, when the piston moves downwards, the blocking ball is blocked through the self gravity of the blocking ball and the conical funnel, and the gas in the pump suction cylinder enters the first connecting pipe through the check valve, through the piston constantly along the inboard reciprocating motion from top to bottom of pump suction tube, thereby make the gas in the first connecting pipe be carried to the second connecting pipe in succession, the natural gas sensor who sets up between second connecting pipe and the first connecting pipe detects flowing gas, and according to the resistance variation of natural gas sensor, can survey the concentration content of natural gas in the detected gas, through the setting of the active carbon filter that sets up in the gas filter box, can adsorb the purification to the harmful substance in the gas, the gas after the purification then outwards discharges from the exhaust window department.

As a preferred technical scheme of the portable natural gas pipeline leakage detection device, the drilling unit comprises two second motors, a worm wheel, a worm, two second fixing plates, a threaded rod, a drill bit, two lifting platforms, slide rods, a drill rod and a third motor, the two second fixing plates are respectively arranged at the right end inside the box body in a bilateral symmetry manner, the worm is rotatably arranged between the two second fixing plates, the second motor is arranged at the left side of one of the second fixing plates, an output shaft of the second motor penetrates through a through hole formed in the second fixing plate and is fixedly connected with one end of the worm, the threaded rod is rotatably arranged at the right end inside the box body, the lifting platforms are in a Z-shaped structure and are respectively connected with the slide rods arranged at the right end inside the box body in a sliding manner, the top fixed mounting of elevating platform has the third motor, the through-hole that sets up on the elevating platform is passed to the output shaft of third motor and drilling rod fixed connection, the bottom of drilling rod is provided with the drill bit, and the drill bit is concentric with the third inspection hole, the bottom of threaded rod is provided with the worm wheel, tooth and the worm meshing on the worm wheel, the output of singlechip is connected with the input electricity of third motor to the second motor. Through the setting of second fixed plate, can support the worm, through the second motor, the cooperation setting between worm and the worm wheel, make the threaded rod drive the elevating platform and carry out the lifting movement along the slide bar, carry out the lifting movement through the elevating platform, make the third motor on the elevating platform drive drilling rod and drill bit punch to detecting the position, punch through the drilling unit to detecting the position to can further improve the precision that detecting element detected the gas leakage of natural gas line.

As a preferred technical scheme of the portable natural gas pipeline leakage detection device, the filtering unit comprises a third connecting pipe, a thermal insulation box, a first cleaning pipe, a second cleaning pipe, a third cleaning pipe, an explosion-proof valve, a dustproof filter plate, a feed hopper and a feed pipe, wherein the first cleaning pipe is arranged at the bottom of a pump suction cylinder, four second cleaning pipes are arranged on the right side of the first cleaning pipe at equal intervals, the second cleaning pipes are respectively communicated with the third cleaning pipe arranged in the pump suction cylinder, the third cleaning pipe is of a U-shaped structure, the upper end and the lower end of the third cleaning pipe are respectively provided with nozzles in an equal-distance array manner, the bottom of the third cleaning pipe is respectively provided with the dustproof filter plate, the dustproof filter plates are respectively arranged at the bottom of the inner side of the pump suction cylinder, the top end of the first cleaning pipe is provided with the thermal insulation box, the left end of the thermal insulation box is provided with the third connecting pipe, and the third connecting pipe is communicated with the exhaust pipe, the feeder hopper intercommunication that separates the temperature box and set up on the left of the box, the top of feeder hopper is provided with the inlet pipe, explosion-proof valve sets up in the bottom of pump suction tube, and explosion-proof valve is located between conical hopper and the scavenge pipe three, the output of singlechip is connected to explosion-proof valve's input electricity. Through the setting of feeder hopper and inlet pipe, make things convenient for the measurement personnel to pour outside dry ice granule into in the box that separates the temperature, setting through explosion-proof valve, can fall into two regions with the inside of pump suction tube, avoid clearing up in dust and the air current that makes get into the detecting element, thereby ensure that the detection precision of detecting element is not influenced, through third connecting pipe and scavenge pipe one and separate the temperature box intercommunication, the gas that produces when making the air pump move gets into in the box that separates the temperature, and the dry ice granule that gas carried then gets into the inside of scavenge pipe two and scavenge pipe three through scavenge pipe one, spout through scavenge pipe three on with dry ice granule splash to dustproof filter, thereby wash dustproof filter, through the setting of dustproof filter, can prevent the inside that the dust granule that contains in the air from getting into the detecting element.

According to the preferred technical scheme of the portable natural gas pipeline leakage detection device, the fixing unit comprises two positioning holes, two fixing blocks, two bolts and two bolt buckles, the two fixing blocks are respectively arranged at the bottoms of the left side and the right side of the box body in a bilateral symmetry mode, the bolts are respectively installed in through holes formed in the middle of the fixing blocks in a sliding mode, one ends of the bolts are respectively movably clamped with the bolt buckles on the box body, and the other ends of the bolts are respectively movably inserted into the positioning holes formed in the left end and the right end of the bottom plate in an equidistance array mode. Through the cooperation setting between locating hole, fixed block and the bolt, can fix removing the rear end box, avoid the drilling unit box production when punching to rock by a wide margin, through the setting of bolt buckle, can carry out the buckle to the plug pin and fix.

As a preferable technical scheme of the portable natural gas pipeline leakage detection device, the cleaning unit comprises an annular pipe, air nozzles, a fourth connecting pipe, a connecting hose and a fixed pipe, the annular pipe is arranged at the center of the bottom plate and is concentrically arranged with the second detection hole, the diameters of the annular pipe and the second detection hole are equal, the air nozzles are circumferentially arranged at the bottom of the annular pipe at equal intervals, the fourth connecting pipe is arranged at one end of the annular pipe and is communicated with the fixed pipe arranged at the rear end of the bottom plate, and the fixed pipe is communicated with the exhaust pipe through the connecting hose. Through the cooperation between fourth connecting pipe, fixed pipe and the coupling hose, can carry the gas of air pump to the annular tube in, through the setting of air nozzle, can blow away the clearance to the position that the drilling unit punched or the lime-soil of drilling unit near the in-process hole that punches, avoid the hole of beating to be covered by the lime-soil or block up.

As a preferred technical scheme of the portable natural gas pipeline leakage detection device, the portable natural gas pipeline leakage detection device further comprises a first handle and an access door, the access door is slidably mounted in a rectangular sliding groove formed in the right side of the box body, and the middle of the right end of the access door is provided with the first handle. Through the arrangement of the first handle and the access door, the drilling unit can be maintained and overhauled by detection personnel conveniently.

The leakage detection device for the portable natural gas pipeline further comprises four baffles and hinges, and the four baffles are rotatably arranged at the top of the periphery of the bottom plate through the hinges respectively. Through the arrangement of the baffle plate and the hinge, dust generated by the drilling unit during drilling can be prevented from splashing outwards.

Compared with the prior art, the invention has the beneficial effects that: this portable natural gas line device that leaks hunting has following benefit:

1. the portable natural gas pipeline leakage detection device drives the piston to move up and down along the pump suction cylinder through the matching arrangement between the first motor, the crankshaft, the second connecting rod, the first fixing plate, the spherical connecting piece and the piston, when the piston moves upwards, negative pressure is formed inside the pump suction cylinder, external gas jacks up the blocking ball upwards and enters the pump suction cylinder, when the piston moves downwards, the blocking ball is blocked by the self gravity of the blocking ball and the conical funnel, so that the gas inside the pump suction cylinder enters the first connecting pipe through the check valve, the piston continuously moves up and down along the inner side of the pump suction cylinder, the gas in the first connecting pipe is continuously conveyed into the second connecting pipe, and the flowing gas is detected through the natural gas sensor arranged between the second connecting pipe and the first connecting pipe, the concentration content of natural gas in the detected gas can be detected according to the resistance change of the natural gas sensor, and harmful substances in the gas can be adsorbed and purified through the arrangement of the activated carbon filter plate arranged in the gas filter box;

2. the connecting sleeve is in threaded connection with the connecting screw rod, the connecting rod is of a Z-shaped structure, so that a detector can grasp the middle part of the connecting rod, the arm of the detector can be supported through the arrangement of the arm supporting plate, the arm supporting plate is matched with the connecting rod, the detector can conveniently perform single-hand supporting and grasping on the supporting and supporting unit, the rotary cylinder is grasped and rotated, the annular clamping block on the inner side of the detection cylinder slides along the annular clamping groove, in the rotating process of the rotary cylinder, the sliding block on the detection cylinder slides along the spiral sliding groove, so that the detection cylinder moves upwards along the fixed cylinder, the sliding block slides along the sliding groove on the fixed cylinder, the detection cylinder can be prevented from rotating along the rotary cylinder, the sliding groove is of a Z-shaped structure, and the detection cylinder moving to the top of the fixed cylinder or the detection cylinder moving to the bottom of the fixed cylinder is fixed, the gas detector arranged in the detection bin can detect leakage of outdoor or indoor higher natural gas pipelines;

3. the worm rotates through the operation of the second motor, the worm is meshed with teeth on the worm wheel through the worm, so that the worm wheel drives the threaded rod to rotate, the threaded rod rotates, the lifting platform slides up and down along the sliding rod, the lifting platform moves up and down, the third motor on the lifting platform drives the drill rod and the drill bit to punch holes in the detection position, before the hole is punched in the drilling unit, two ends of the connecting hose are respectively connected with the fixed pipe and the exhaust pipe on the air pump, the air enters the fixed pipe and the fourth connecting pipe through the operation of the air pump, the air is conveyed into the annular pipe through the fourth connecting pipe, and the air is blown away and cleaned from the dust near the hole in the punching position or the hole in the punching process of the drilling unit through the air nozzle at the bottom of the annular pipe, so that the punched hole is prevented from being covered or blocked by the dust;

4. this portable natural gas pipeline device that leaks hunting has assembled detection device, can carry out the leak hunting to indoor or outdoor some higher natural gas pipelines and detect, this take formula natural gas pipeline device that leaks hunting simultaneously, portable, removal can follow the pipeline top and patrol and examine, and to some places that need drill hole and leak hunting, can directly punch the detection, and it is comparatively accurate to detect numerical value, and the security is higher moreover, can purify the gas that detects, avoids the measurement personnel to inhale poisonous harmful gas.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

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

FIG. 3 is an enlarged view of the portion A of the present invention;

FIG. 4 is a schematic cross-sectional view of the present invention;

FIG. 5 is a first partial cross-sectional structural view of the present invention;

FIG. 6 is a second partial cross-sectional structural view of the present invention;

FIG. 7 is a schematic view of a third partial cross-sectional structure of the present invention;

FIG. 8 is an enlarged view of a portion of the present invention at B;

FIG. 9 is a schematic view of a detecting unit according to the present invention;

FIG. 10 is a cross-sectional view of a structural detecting unit according to the present invention;

FIG. 11 is an enlarged view of a portion of the present invention at C;

FIG. 12 is a schematic view of a partial structure of a filter unit according to the present invention;

FIG. 13 is a schematic view of a structural drilling unit of the present invention;

FIG. 14 is a schematic view of the combination structure of the bracketing unit, the connecting unit and the retractable unit of the present invention;

FIG. 15 is a schematic view of a bracketing unit according to the present invention;

FIG. 16 is a schematic view of a connecting unit according to the present invention;

FIG. 17 is a schematic view of the structure of the telescopic unit of the present invention;

fig. 18 is a schematic cross-sectional view of the telescopic unit of the present invention.

In the figure: 1 bottom plate, 2 box bodies, 3 single chip microcomputers, 4 bracketing units, 401 first connecting rods, 402 limiting rings, 403 connecting sleeves, 404 positioning blocks, 405 arm supporting plates, 5 connecting units, 501 detection boxes, 502 buzzers, 503 battery compartment cover plates, 504 first battery compartments, 505 first displays, 506 connecting screws, 6 telescopic units, 601 rotating cylinders, 602 detection cylinders, 603 fixing cylinders, 604 sliding blocks, 605 sliding grooves, 606 annular clamping grooves, 607 dustproof nets, 608 annular clamping blocks, 609 spiral sliding grooves, 610 detection chambers, 611 gas detectors, 7 detection units, 701 first motors, 702 crankshafts, 703 second connecting rods, 704 first fixing plates, 705 spherical connecting pieces, 706 pistons, 707 pump suction cylinders, 708 conical funnels, 709 sealing balls, 710 first connecting pipes, 711 natural gas sensors, 712 second connecting pipes, 713 gas filter boxes, 714 activated carbon filter plates, 715 electric telescopic rods,

fixing seats

716, 707, 717 connecting plate, 718 telescopic cylinder, 719 one-way valve, 8 drilling unit, 801 second motor, 802 worm wheel, 803 worm, 804 second fixing plate, 805 threaded rod, 806 drill bit, 807 lifting platform, 808 sliding rod, 809 drill rod, 810 third motor, 9 filtering unit, 901 third connecting pipe, 902 heat insulation box, 903 cleaning pipe I, 904 cleaning pipe II, 905 cleaning pipe III, 906 explosion-proof valve, 907 dust-proof filter plate, 908 feed hopper, 909 feed pipe, 10 fixing unit, positioning hole, 1002 fixing block, 1003 bolt, 1001 bolt buckle, 11 cleaning unit, 1101 annular pipe, 1102 air nozzle, 1103 fourth connecting pipe, 1104 connecting hose, 1105 fixing pipe, 12 sliding rail, 13 push-pull rod, 14 extension box, 15 telescopic pull rod, 16 storage box, 17 charging port, 18 first handle, 19 access door, 20 first partition plate, 21 baffle plate, 22 hinge, 23, 24 air pump, 25 exhaust pipe, 21 exhaust pipe, 22 heat dissipation hole, 18 exhaust pipe, 26 air inlet pipes, 27 exhaust windows, 28 universal wheels, 29 first detection holes, 30 second detection holes, 31 third detection holes, 32 first support plates, 33 second support plates, 34 second handles, 35 storage batteries, 36 second partition plates and 37 second displays.

Detailed Description

Example 1

As shown in fig. 1 to 18, the invention discloses a portable natural gas pipeline leakage detection device, which adopts the technical scheme that the leakage detection device comprises a bottom plate 1, a box body 2, slide rails 12 and telescopic pull rods 15, four corners of the bottom plate 1 are respectively provided with universal wheels 28, the front and the rear of the upper surface of the bottom plate 1 are symmetrically provided with the slide rails 12, the box body 2 is slidably mounted on the slide rails 12, the top of the rear side of the box body 2 is provided with the telescopic pull rods 15, the center of the bottom plate 1 is provided with a second detection hole 30, the bottom of the second detection hole 30 is provided with a cleaning unit 11, the left end and the right end of the bottom of the box body 2 are respectively provided with a first detection hole 29 and a third detection hole 31, the first detection hole 29 and the third detection hole 31 and the second detection hole 30 are on the same central axis, a detection unit 7 and a filtering unit 9 are arranged right above the first detection hole 29, a drilling unit 8 is arranged right above the second detection hole 30, an extension box 14 is arranged right above the drilling unit 8, the extension box 14 is fixedly arranged at the right end of the top of the box body 2, a push-pull rod 13 is rotatably arranged between lugs arranged at the front end and the rear end of the top of the left side and the right side of the box body 2, a second partition plate 36 is transversely arranged at the rear end of the inner side of the box body 2, a storage battery 35 is arranged between the bottom of the rear side of the second partition plate 36 and the box body 2, heat dissipation holes 23 are arranged at the rear side of the storage battery 35, the heat dissipation holes 23 are arranged at the rear side of the box body 2 in an equidistant array manner, a charging interface 17 is arranged at the right end of the storage battery 35, an air pump 24 is arranged on the extension plate arranged at the top of the storage battery 35, exhaust pipes 25 are symmetrically arranged at the front and rear of the left end of the air pump 24, the exhaust pipes 25 are respectively communicated with the filtering unit 9 and the cleaning unit 11, an air inlet pipe 26 is arranged at the rear side of the right end of the air pump 24, and a storage box 16 is arranged at the right end of the air pump 24, the storage box 16 is slidably mounted in a rectangular groove formed in the top of the rear end of the box body 2, a second handle 34 is arranged on the top of the storage box 16, the support unit 4, the connecting unit 5 and the telescopic unit 6 are arranged in the storage box 16, a first partition plate 20 is arranged in the middle of the front side of a second partition plate 36, a first support plate 32 and a second support plate 33 are arranged on the top of the left side of the first partition plate 20, the second support plate 33 is located above the first support plate 32, a second display 37 is arranged at the left end of the surface of the front side of the box body 2, and fixing units 10 are arranged at the bottoms of the left side and the right side of the box body 2; the device is convenient to move by arranging the universal wheels 28, the box body 2 and the bottom plate 1 are convenient to move by pulling the telescopic pull rod 15, the box body 2 slides along the slide rail 12 by pushing the push-pull rod 13, the detection unit 7, the filter unit 9 and the drilling unit 8 can detect the gas leakage of the buried natural gas pipeline through the second detection hole 30 by the first detection hole 29, the third detection hole 31 and the second detection hole 30 on the same axis, the detection position is conveniently drilled by the drilling unit 8 after the third detection hole 31 is aligned with the second detection hole 30, the collision between the drilling unit 8 and the top of the box body 2 can be avoided by arranging the extension box 14, the drilling stroke of the drilling unit 8 is prolonged, and the detection unit 7 can detect the gas leakage of the buried natural gas pipeline after the first detection hole 29 is aligned with the second detection hole 30, through the arrangement of the filter unit 9, dust can be prevented from entering the detection unit 7, through the matching arrangement between the second partition plate 36 and the first partition plate 20 and between the first support plate 32 and the second support plate 33, the internal area of the box body 2 can be partitioned, through the arrangement of the storage battery 35, power can be provided for the device, through the arrangement of the charging interface 17, the detection personnel can conveniently charge the storage battery 35, through the arrangement of the air pump 24, high-pressure air flow can be provided for the filter unit 9 and the cleaning unit 11, through the cleaning unit 11 arranged at the bottom of the second detection hole 30, dust at the bottom of the bottom plate 1 and soil generated in the drilling process of the drilling unit 8 can be cleaned, through the arrangement of the storage box 16, the support unit 4, the connection unit 5 and the telescopic unit 6 can be stored, through the support unit 4, the connection unit 5 and the telescopic unit 6, therefore, the leakage detection of the natural gas pipeline at a higher position outdoors or indoors is facilitated for the detection personnel, the gas value detected by the detection unit 7 can be displayed by the arrangement of the second display 37, and the detection personnel can fix the moved box body 2 and the bottom plate 1 conveniently by the arrangement of the fixing unit 10;

wherein: still include singlechip 3, singlechip 3 sets up in the right side surface of box 2, and the input of air pump 24 and second display 37 is connected to singlechip 3's output electricity, and the output of battery 35 is connected to singlechip 3's input electricity.

Bracketing unit 4 contains connecting rod 401, spacing ring 402, adapter sleeve 403, locating piece 404 and arm layer board 405, connecting rod 401 is "Z" shape structure, connecting rod 401 sets up the inside at receiver 16, the one end of connecting rod 401 is provided with arm layer board 405, the other end slidable mounting of connecting rod 401 has adapter sleeve 403, adapter sleeve 403 is located between two spacing rings 402 that set up on connecting rod 401, spacing ring 402 carries out spacingly to adapter sleeve 403 respectively, the tip surface of the connecting rod 401 other end is provided with locating piece 404, and locating piece 404 is "ten" font structure. When carrying out the leak hunting detection to outdoor or indoor higher position's natural gas pipeline, insert locating piece 404 in the constant head tank on connecting screw 506, then carry out threaded connection with adapter sleeve 403 and connecting screw 506, make bracketing unit 4 and linkage unit 5 make up, setting through spacing ring 402, after bracketing unit 4 and linkage unit 5 split, can avoid adapter sleeve 403 and connecting rod 401 to take place to break away from, be "Z" shape structure through connecting rod 401, make the testing personnel can carry out the gripping to the middle part of connecting rod 401, setting through arm layer board 405, can support testing personnel's arm, cooperate between arm layer board 405 and connecting rod 401, thereby make things convenient for testing personnel to carry out the one-hand to prop to hold unit 4 and lift the gripping.

The connection unit 5 comprises a detection box 501, a buzzer 502, a battery compartment cover plate 503, a battery compartment 504, a first display 505 and a connection screw 506, the detection box 501 is arranged inside the storage box 16, the battery compartment 504 is arranged at the left end of the top of the detection box 501, a battery is arranged in the battery compartment 504, the battery compartment cover plate 503 is arranged at the top of the battery compartment 504, the buzzer 502 is arranged at the left side of the battery compartment 504, the first display 505 is arranged at the right end of the top of the detection box 501, the connection screw 506 is arranged at the center of the left side of the detection box 501, a positioning groove and a positioning block 404 are slidably connected with the end portion of the left side of the connection screw 506, the connection screw 506 is in threaded connection with the inner side of the connection sleeve 403, and the input end portions of the buzzer 502 and the first display 505 are electrically connected with the output end portions of the battery in the battery compartment 504. When gas detector 611 carries out gas leakage detection to external natural gas pipeline, gas concentration when gas detector 611 detects can be carried to first display 505 and is shown, thereby make things convenient for detection personnel to record detection numerical value, when gas concentration when detecting is too high, bee calling organ 502 then reports to the police, remind detection personnel to look over the gas leakage position of natural gas pipeline, through the battery of installation in battery compartment apron 503 and battery compartment 504 and the battery compartment 504, can be bee calling organ 502, first display 505 and gas detector 611 provide electric power, through connecting screw 506's setting, can make things convenient for coupling unit 5 to be connected with bracketing unit 4.

The telescopic unit 6 comprises a rotary cylinder 601, a detection cylinder 602, a fixed cylinder 603, a sliding block 604, a sliding groove 605, an annular clamping groove 606, a dustproof net 607, an annular clamping block 608, a spiral sliding groove 609, a detection bin 610 and a gas detector 611, wherein the fixed cylinder 603 is fixedly arranged at the right center of the detection box 501, the sliding groove 605 is symmetrically arranged in the front and back of the middle part of the fixed cylinder 603, the sliding groove 605 is of a Z-shaped structure, the annular clamping groove 606 is arranged at the left end of the fixed cylinder 603, the annular clamping groove 606 is slidably connected with the annular clamping block 608 arranged on the rotary cylinder 601, the spiral sliding groove 609 is arranged on the inner side of the rotary cylinder 601, the detection cylinder 602 is slidably arranged on the inner side of the fixed cylinder 603, the sliding block 604 arranged at the bottom of the detection cylinder 602 is respectively slidably connected with the inner sides of the sliding groove 605 and the spiral sliding groove 609, the detection bin 610 is arranged at the right end of the detection cylinder 601, the gas detector 611 is arranged inside the detection bin 610, the dustproof net 607 is arranged at the right end of the detection bin 610, the input end of the gas detector 611 is electrically connected to the output end of the battery in the battery compartment 504. The annular clamping block 608 on the inner side of the detection cylinder 602 slides along the annular clamping groove 606 by grasping the rotary cylinder 601 and rotating, and in the rotating process of the rotary cylinder 601, the sliding block 604 on the detection cylinder 602 slides along the spiral sliding groove 609, so that the detection cylinder 602 moves upwards along the fixed cylinder 603, and simultaneously the sliding block 604 slides along the sliding groove 605 on the fixed cylinder 603, so that the detection cylinder 602 can be prevented from rotating along the rotary cylinder 601, and the sliding groove 605 is of a Z-shaped structure, so that the detection cylinder 602 moving to the top of the fixed cylinder 603 or the detection cylinder 602 moving to the bottom of the fixed cylinder 603 is fixed, and the gas detector 611 arranged in the detection bin 610 can detect leakage of natural gas pipelines higher outdoors or indoors by combining the supporting unit 4, the connecting unit 5 and the telescopic unit 6, and dust can be prevented from entering the detection bin 610 by the arrangement of the dustproof net 607, affecting the accuracy of the gas detector 611.

The detection unit 7 comprises a first motor 701, a crankshaft 702, a second connecting rod 703, a first fixing plate 704, a spherical connecting piece 705, a piston 706, a pumping cylinder 707, a conical funnel 708, a blocking ball 709, a first connecting pipe 710, a natural gas sensor 711, a second connecting pipe 712, a gas filter box 713, an activated carbon filter plate 714, an electric telescopic rod 715, a fixing seat 716, a connecting plate 717, a telescopic cylinder 718 and a one-way valve 719, wherein the pumping cylinder 707 is arranged at the center of the first supporting plate 32 and the second supporting plate 33, the conical funnel 708 is arranged at the inner center of the pumping cylinder 707, the blocking ball 709 is movably arranged in the conical funnel 708, the piston 706 is slidably arranged at the top of the inner side of the pumping cylinder 707, the spherical connecting piece is slidably arranged in a spherical groove arranged at the top of the piston 706, the second connecting rod 703 is arranged at the top of the spherical connecting rod 705, the crankshaft 702 is rotatably connected at the top of the second connecting rod 703, the left and right ends of the crankshaft 702 are respectively rotatably connected with a first fixing plate 704 arranged on a second supporting plate 33, a first motor 701 is arranged at the front side of one first fixing plate 704, the output shaft of the first motor 701 is fixedly connected with one end of the crankshaft 702, a first connecting pipe 710 is arranged in the middle of a pumping cylinder 707, the first connecting pipe 710 is positioned at the top of a conical funnel 708, a one-way valve 719 is arranged inside the first connecting pipe 710, the other end of the first connecting pipe 710 passes through the first supporting plate 32 and is communicated with one end of the second connecting pipe 712, a natural gas sensor 711 is arranged between the first connecting pipe 710 and the second connecting pipe 712, the other end of the second connecting pipe 712 is communicated with a gas filter box 713 arranged at the left end of the top of the first supporting plate 32, activated carbon filter plates 714 are arranged in the gas filter box 713 in an array at equal intervals, and the other end of the gas filter box 713 is communicated with an exhaust window 27 arranged at the left side of the box 2, electric telescopic handle 715 sets up in the bottom of pumping a section of thick bamboo 707, electric telescopic handle 715 passes through fixing base 716 and the outside fixed connection who pumps a section of thick bamboo 707, electric telescopic handle 715's flexible end passes through connecting plate 717 and the flexible section of thick bamboo 718 outside fixed connection who pumps a section of thick bamboo 707 bottom setting, flexible section of thick bamboo 718 is concentric with first inspection hole 29, singlechip 3's output is connected to first motor 701 and electric telescopic handle 715's input electricity, singlechip 3's input is connected to natural gas sensor 711's output electricity. When the concentration of natural gas in a detection hole is detected, the electric telescopic rod 715 is operated, the connecting plate 717 drives the telescopic cylinder 718 to move downwards, after the telescopic cylinder 718 passes through the first detection hole 29 and the second detection hole 30 and enters the detection hole, the first motor 701 is operated, the crankshaft 702 is rotated, the second connecting rod 703 is rotatably installed at a middle convex part of the crankshaft 702, the second connecting rod 73 moves up and down along with the rotation of the crankshaft 702, the spherical connecting piece 705 at the bottom of the second connecting rod 73 slides with the inner side of the spherical groove at the top of the piston 706, the second connecting rod 73 drives the piston 706 to move up and down along the inner side of the pumping cylinder 707, the backflow of the gas in the first connecting pipe 10 to the pumping cylinder 707 can be effectively avoided through the check valve 719 arranged in the first connecting pipe 10, when the piston 706 moves upwards, the negative pressure is formed in the pumping cylinder 707, the blocking ball 709 is jacked up by external air, the air enters the interior of the pumping cylinder 707, when the piston 706 moves downwards, the blocking ball 709 is blocked by the self gravity of the blocking ball 709 and the conical funnel 708, so that the air in the interior of the pumping cylinder 707 enters the first connecting pipe 10 through the one-way valve 719, the piston 706 continuously moves up and down along the inner side of the pumping cylinder 707, so that the air in the first connecting pipe 10 is continuously conveyed into the second connecting pipe 712, the flowing air is detected by the natural gas sensor 711 arranged between the second connecting pipe 712 and the first connecting pipe 10, the concentration content of the natural gas in the detected air can be detected according to the resistance change of the natural gas sensor 711, the detected value is conveyed to the second display 37 for display, and the finally detected air is conveyed into the air filter box 713 by the second connecting pipe 712, the arrangement of the activated carbon filter plate 714 can absorb and purify harmful substances in the gas, and the purified gas is discharged from the exhaust window 27.

The drilling unit 8 comprises two second motors 801, a worm wheel 802, a worm 803, two second fixing plates 804, a threaded rod 805, a drill bit 806, lifting platforms 807, sliding rods 808, drill rods 809 and a third motor 810, the second fixing plates 804 are arranged in two, the second fixing plates 804 are respectively arranged at the right end inside the box body 2 in a bilateral symmetry manner, the worm 803 is rotatably arranged between the second fixing plates 804, the second motor 801 is arranged at the left side of one second fixing plate 804, an output shaft of the second motor 801 passes through a through hole arranged on the second fixing plate 804 and is fixedly connected with one end of the worm 803, the threaded rod 805 is rotatably arranged at the right end inside the box body 2, the lifting platforms 807 are in threaded connection on the threaded rod 805, the lifting platforms are in a Z-shaped structure, sliding holes are arranged at the left end and the right end of the lifting platforms 807 and are respectively in sliding connection with the sliding rods 808 arranged at the right end inside the box body 2, the third motor 810 is fixedly arranged at the tops of the lifting platforms 807, an output shaft of the third motor 810 penetrates through a through hole formed in the lifting table 807 to be fixedly connected with a drill rod 809, a drill bit 806 is arranged at the bottom end of the drill rod 809, the drill bit 806 is concentric with the third detection hole 31, a worm gear 82 is arranged at the bottom of the threaded rod 85, teeth on the worm gear 82 are meshed with the worm 803, and input ends of the second motor 801 and the third motor 810 are electrically connected with an output end of the single chip microcomputer 3. Through the operation of second motor 801, make worm 803 rotate, through the tooth meshing on worm 803 and the worm wheel 802, thereby make worm wheel 802 drive threaded rod 805 and rotate, rotate through threaded rod 805, make elevating platform 807 slide from top to bottom along slide bar 808, go up and down to move through elevating platform 807, make the third motor 810 on elevating platform 807 drive drilling rod 809 and drill bit 806 and punch to the detection position, punch to the detection position through drilling unit 8, thereby can further improve the precision that detecting unit 7 detected the gas leakage of natural gas line.

The filtering unit 9 comprises a third connecting pipe 901, a thermal insulation box 902, a first cleaning pipe 903, a second cleaning pipe 904, a third cleaning pipe 905, an explosion-proof valve 906, a dustproof filter plate 907, a feed hopper 908 and a feed pipe 909, wherein the first cleaning pipe 903 is arranged at the bottom of a pump suction cylinder 707, four second cleaning pipes 904 are arranged on the right side of the first cleaning pipe 903 at equal intervals, the second cleaning pipes 904 are respectively communicated with the third cleaning pipes 905 arranged in the pump suction cylinder 707, the third cleaning pipe 905 is in a U-shaped structure, the upper end and the lower end of the third cleaning pipe 905 are respectively provided with nozzles at equal intervals in an array manner, the bottoms of the third cleaning pipes 905 are respectively provided with the dustproof filter plate 907, the dustproof filter plates 907 are respectively arranged at the bottom inside the pump suction cylinder 707, the top end of the first cleaning pipe 903 is provided with the thermal insulation box 902, the left end of the thermal insulation box 902 is provided with the third connecting pipe 901, the third connecting pipe 901 is communicated with an exhaust pipe 25, the thermal insulation box 902 is communicated with the feed hopper 904 arranged on the left side of a box 2, the top of the feed hopper 904 is provided with a feed pipe 909, an explosion-proof valve 906 is arranged at the bottom of a pumping cylinder 707, the explosion-proof valve 906 is positioned between the conical funnel 708 and a third cleaning pipe 905, and the input end of the explosion-proof valve 906 is electrically connected with the output end of the singlechip 3. When dust attached to the dustproof filter plate 907 is cleaned, firstly, the explosion-proof valve 906 is closed, then, external dry ice particles are quickly poured into the feed hopper 904 from the feed pipe 909, secondly, the pipe cover at the top of the feed pipe 909 is quickly covered, the external dry ice particles quickly slide into the thermal insulation box 902, the air pump 24 operates, the exhaust pipe 25 at the other end of the air pump 24 conveys air into the third connecting pipe 901, the third connecting pipe 901 is communicated with the interior of the thermal insulation box 902, the air carries the dry ice particles in the thermal insulation box 902 into the first cleaning pipe 903, the first cleaning pipe 903 disperses the air and the dry ice particles into the second cleaning pipe 904, the dry ice particles are sprayed onto the dustproof filter plate 907 through the nozzle on the third cleaning pipe 905, the dry ice particles impact the surface of the dustproof filter plate 907 at a high speed, and accordingly, dirt on the dustproof filter plate 907 is frozen to be brittle and burst, the dry ice particles penetrate into the dirt and the dustproof filter plates 907 under the impact action, are sublimated immediately, increase the volume instantly, and force the dirt to be separated from the dustproof filter plates 907, so that the purpose of cleaning the dustproof filter plates 907 is achieved.

The fixing unit 10 comprises positioning holes 1001, fixing blocks 1002, bolts 1003 and bolt buckles 1004, the number of the fixing blocks 1002 is two, the fixing blocks 1002 are respectively arranged at the bottoms of the left side and the right side of the box body 2 in a bilateral symmetry mode, the bolts 1003 are respectively installed in through holes formed in the middle of the fixing blocks 1002 in a sliding mode, one ends of the bolts 1003 are respectively movably clamped with the bolt buckles 1004 on the box body 2, and the other ends of the bolts 1003 are respectively movably inserted into the positioning holes 1001 formed in the left end and the right end of the bottom plate 1 in an equidistance array mode. After the box body 2 is moved to a proper working position, the bolts 1003 on the bolt buckles 1004 on the left side and the right side of the box body 2 are taken down, the bolts 1003 penetrate through the through holes on the fixing blocks 1002 to be inserted into the corresponding positioning holes 1001 on the bottom plate 1, and therefore the box body 2 can be fixed.

The cleaning unit 11 comprises a ring pipe 1101, an air nozzle 1102, a fourth connecting pipe 1103, a connecting hose 1104 and a fixed pipe 1105, wherein the ring pipe 1101 is arranged at the center of the bottom of the base plate 1, the ring pipe 1101 is concentrically arranged with the second detection hole 30, the diameter of the ring pipe 1101 is equal to that of the second detection hole 30, the air nozzles 1102 are arranged in a circumferential array at equal intervals at the bottom of the ring pipe 1101, the fourth connecting pipe 1103 is arranged at one end of the ring pipe 1101, the fourth connecting pipe 1103 is communicated with the fixed pipe 1105 arranged at the rear end of the base plate 1, and the fixed pipe 1105 is communicated with the exhaust pipe 25 through the connecting hose 1104. Before the drilling unit 8 punches, the two ends of the connecting hose 1104 are respectively connected with the exhaust pipes 25 on the fixed pipe 1105 and the air pump 24, the air pump 24 runs, so that air enters the fixed pipe 1105 and the fourth connecting pipe 1103 through the connecting hose 1104, the air is conveyed to the annular pipe 1101 through the fourth connecting pipe 1103, and the air nozzle 1102 at the bottom of the annular pipe 1101 blows away and cleans dust near holes at the drilling position or the drilling unit 8 in the drilling process, so that the drilled holes are prevented from being covered or blocked by the dust.

The box body 2 is characterized by further comprising a first handle 18 and an access door 19, wherein the access door 19 is slidably mounted in a rectangular sliding groove formed in the right side of the box body 2, and the middle of the right end of the access door 19 is provided with the first handle 18. Through the first handle 18 of inspection personnel pulling, make access door 19 slide along the rectangle spout on box 2 right side, after access door 19 was opened, inspection personnel can maintain drilling unit 8 and overhaul.

Still include baffle 21 and hinge 22, baffle 21 sets up four, and baffle 21 rotates through hinge 22 respectively and installs at bottom plate 1 top all around. By turning the baffles 21 on the base plate 1 respectively, the baffles 21 are rotated through the hinges 22, and the baffles 21 are perpendicular to the side walls of the base plate 1, so that dust generated by the drilling unit 8 during drilling can be blocked.

The working principle of the invention is as follows: firstly, the device is moved to a proper working position by pulling the telescopic pull rod 15, when a tester tests the leakage of the natural gas pipeline at a higher position outdoors or indoors, the support unit 4, the connecting unit 5 and the telescopic unit 6 in the storage box 16 are taken out, the positioning block 404 is inserted into the positioning groove on the connecting screw 506, then the connecting sleeve 403 is in threaded connection with the connecting screw 506, the connecting rod 401 is in a Z-shaped structure, so that the tester can grasp the middle part of the connecting rod 401, the arm of the tester can be supported by the arrangement of the arm supporting plate 405, the arm supporting plate 405 is matched with the connecting rod 401, so that the tester can conveniently grasp the support unit 4 by one hand, the rotary cylinder 601 is grasped and rotated, and the annular clamping block 608 at the inner side of the test cylinder 602 slides along the annular clamping groove 606, in the process of rotating the rotary cylinder 601, the sliding block 604 on the detection cylinder 602 slides along the spiral sliding groove 609, so that the detection cylinder 602 moves upwards along the fixed cylinder 603, and simultaneously the sliding block 604 slides along the sliding groove 605 on the fixed cylinder 603, so that the detection cylinder 602 can be prevented from rotating along with the rotary cylinder 601, the sliding groove 605 is of a Z-shaped structure, the detection cylinder 602 moving to the top of the fixed cylinder 603 or the detection cylinder 602 moving to the bottom of the fixed cylinder 603 is fixed, so that the gas detector 611 arranged in the detection bin 610 can perform leakage detection on outdoor or indoor higher natural gas pipelines, through the arrangement of the dustproof net 607, dust can be prevented from entering the detection bin 610 to affect the precision of the gas detector 611, when the gas detector 611 performs leakage detection on the external natural gas pipelines, the gas concentration during detection of the gas detector 611 can be conveyed to the first display 505 for display, therefore, detection personnel can conveniently record the detection value, and when the gas concentration during detection is too high, the buzzer 502 gives an alarm to remind the detection personnel to check the gas leakage position of the natural gas pipeline;

the detector can also move along the natural gas pipeline according to the buried natural gas pipeline, the box body 2 slides along the slide rail 12 by pushing the push-pull rod 13, after the third detection hole 31 is aligned with the second detection hole 30, the bolts 1003 on the bolt buckles 1004 at the left side and the right side of the box body 2 are taken down, the bolts 1003 penetrate through the through holes on the fixed block 1002 to be inserted into the corresponding positioning holes 1001 on the bottom plate 1, so that the box body 2 can be fixed, the baffle plate 21 on the bottom plate 1 is respectively turned over, the baffle plate 21 is enabled to transmit rotation through the hinge 22, the baffle plate 21 is enabled to be perpendicular to the side wall of the bottom plate 1, so that dust generated during drilling of the drilling unit 8 can be blocked, the worm 803 is enabled to rotate by the operation of the second motor 801, the worm is enabled to be meshed with teeth on the worm wheel 802, so that the worm wheel 802 drives the threaded rod 805 to rotate, the lifting platform 807 slides up and down along the sliding rod 808 by rotating the threaded rod 805, the lifting platform 807 moves up and down, the third motor 810 on the lifting platform 807 drives the drill rod 809 and the drill bit 806 to punch holes at the detection position, the detection personnel need to hold the push-pull rod 13 by hand during the punching process of the drilling unit 8, so that the device is prevented from moving, the box body 2 is prevented from greatly shaking, before the drilling unit 8 punches the holes, two ends of the connecting hose 1104 are respectively connected with the fixed pipe 1105 and the exhaust pipe 25 on the air pump 24, the air pump 24 runs to ensure that the air enters the fixed pipe 1105 and the fourth connecting pipe 1103 by the connecting hose 1104, the air is conveyed into the annular pipe 1101 by the fourth connecting pipe 1103, and the air is blown away from the dust at the punching position or near the holes of the drilling unit 8 during the punching process by the air nozzle 1102 at the bottom of the annular pipe 1101, the drilled holes are prevented from being covered or blocked by the dust;

when the concentration of natural gas in the detection hole is detected, the box body 2 is moved, after the first detection hole 29 is aligned with the second detection hole 30, the box body 2 is fixed through the fixing unit 10, the electric telescopic rod 715 is operated, the connecting plate 717 drives the telescopic cylinder 718 to move downwards, after the telescopic cylinder 718 passes through the first detection hole 29 and the second detection hole 30 and enters the detection holes, the crankshaft 702 is operated through the first motor 701, the crankshaft 702 rotates, the second connecting rod 703 is rotatably installed at a middle bulge of the crankshaft 702, the second connecting rod 73 moves up and down along with the rotation of the crankshaft 702, the spherical connecting piece 705 at the bottom of the second connecting rod 73 slides with the inner side of the spherical groove at the top of the piston 706, meanwhile, the second connecting rod 73 drives the piston 706 to move up and down along the inner side of the pumping cylinder 707, and the backflow of the internal gas of the first connecting pipe 10 into the pumping cylinder 707 can be effectively avoided through the one-way valve 719 arranged inside the first connecting pipe 10, when the piston 706 moves upward, negative pressure is formed inside the pumping cylinder 707, so that the blocking ball 709 is lifted up by external air, and the air enters the inside of the pumping cylinder 707, when the external air enters the pumping cylinder 707, the dust particles contained in the air can be blocked and filtered by the arrangement of the dustproof filter plate 907, when the piston 706 moves downward, the blocking ball 709 is blocked by the self-gravity of the blocking ball 709 and the conical funnel 708, so that the air inside the pumping cylinder 707 enters the first connecting pipe 10 through the one-way valve 719, and reciprocates up and down along the inside of the pumping cylinder 707 by the piston 706, so that the air inside the first connecting pipe 10 is continuously delivered into the second connecting pipe 712, the flowing air is detected by the natural gas sensor 711 arranged between the second connecting pipe 712 and the first connecting pipe 10, and according to the resistance change of the natural gas sensor 711, the concentration content of the natural gas in the detected gas can be measured, the detected value is transmitted to the second display 37 for displaying, the finally detected gas is transmitted to the gas filter box 713 by the second connecting pipe 712, the harmful substances in the gas can be adsorbed and purified through the arrangement of the activated carbon filter plate 714, and the purified gas is discharged from the exhaust window 27;

when dust attached to the dustproof filter plate 907 is cleaned, the detection unit 7 is closed, the explosion-proof valve 906 is closed, then external dry ice particles are quickly poured into the feed hopper 904 from the feed pipe 909, then the pipe cover at the top of the feed pipe 909 is quickly covered, the external dry ice particles quickly slide into the thermal insulation box 902, the air pump 24 operates to enable the exhaust pipe 25 at the other end of the air pump 24 to convey air into the third connecting pipe 901, the third connecting pipe 901 is communicated with the interior of the thermal insulation box 902 to enable the air to carry the dry ice particles in the thermal insulation box 902 to enter the first cleaning pipe 903, the first cleaning pipe 903 disperses the air and the dry ice particles into the second cleaning pipe 904, the dry ice particles are sprayed onto the dustproof filter plate 907 through the dry ice nozzles on the third cleaning pipe 905, the dry ice particles impact the surface of the dustproof filter plate 907 at a high speed, and accordingly dirt on the dustproof filter plate 907 is frozen to be brittle and burst, the dry ice particles penetrate into the dirt and the dustproof filter plates 907 under the impact action, are sublimated immediately, increase the volume instantly, and force the dirt to be separated from the dustproof filter plates 907, so that the purpose of cleaning the dustproof filter plates 907 is achieved.

The circuit connection involved in the invention is a conventional means adopted by technicians in the field, can obtain technical inspiration through limited tests, belongs to the widely used prior art, and is characterized in that the specific model of the singlechip 3 is Siemens S7-200, the air pump 24 is recommended to be a double-head micro vacuum pump produced by Meishan science and technology Yongshan (Guangdong) Limited company, the first display 505 and the second display 37 are recommended to be displays produced by Shenzhou province electronic Limited company, the buzzer 502 is recommended to be a buzzer produced by Reitai science and technology Limited company in Beijing, the gas detector 611 is recommended to be a natural gas detector produced by Shandong Tianqi Intelligent science and technology Limited company, the first motor 701 and the second motor 801 are recommended to be servo motors produced by Jiangsu Whiston electromechanical Limited company, the natural gas sensor 711 is recommended to be a natural gas sensor produced by Zheng Zhongzhong Shenzhong Shengshi electronic technology Limited company, the suggested electric telescopic rod 715 is an electric telescopic rod produced in the Shuyang county Jingbi department center, the suggested third motor 810 is an explosion-proof motor produced in Shenyang city in flood district by all large electromechanical equipment, the suggested explosion-proof valve 906 is an explosion-proof valve produced by Shanghai gold steel automatic control valve limited company, and the single chip microcomputer 3 controls the air pump 24, the first display 505, the second display 37, the buzzer 502, the gas detector 611, the first motor 701, the second motor 801, the third motor 810, the natural gas sensor 711, the electric telescopic rod 715 and the explosion-proof valve 906 to work by adopting a method commonly used in the prior art.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A portable natural gas pipeline leakage detection device comprises a bottom plate (1), a box body (2), sliding rails (12) and telescopic pull rods (15), universal wheels (28) are arranged at four corners of the bottom plate (1) respectively, the sliding rails (12) are symmetrically arranged in front of and behind the upper surface of the bottom plate (1), the box body (2) is arranged on the sliding rails (12) in a sliding mode, the telescopic pull rods (15) are arranged at the top of the rear side of the box body (2), the portable natural gas pipeline leakage detection device is characterized in that a second detection hole (30) is formed in the center of the bottom plate (1), a cleaning unit (11) is arranged at the bottom of the second detection hole (30), a first detection hole (29) and a third detection hole (31) are arranged at the left end and the right end of the bottom of the box body (2) respectively, and the first detection hole (29) and the third detection hole (31) and the second detection hole (30) are on the same central axis, a detection unit (7) and a filtering unit (9) are arranged right above the first detection hole (29), a drilling unit (8) is arranged right above the second detection hole (30), an extension box (14) is arranged right above the drilling unit (8), the extension box (14) is fixedly arranged at the right end of the top of the box body (2), a push-pull rod (13) is rotatably arranged between lugs arranged at the front end and the rear end of the top of the left side and the right side of the box body (2), a second partition plate (36) is transversely arranged at the rear end of the inner side of the box body (2), a storage battery (35) is arranged between the bottom of the rear side of the second partition plate (36) and the box body (2), heat dissipation holes (23) are arranged at the rear side of the box body (2) in an equidistant array manner, a charging port (17) is arranged at the right end of the storage battery (35), the charging interface (17) is located at the right end of the box body (2), an air pump (24) is arranged on an extension plate arranged at the top of the storage battery (35), exhaust pipes (25) are symmetrically arranged at the front and back of the left end of the air pump (24), the exhaust pipes (25) are respectively communicated with the filtering unit (9) and the cleaning unit (11), an air inlet pipe (26) is arranged at the rear side of the right end of the air pump (24), a storage box (16) is arranged at the right end of the air pump (24), the storage box (16) is slidably mounted in a rectangular groove formed in the top of the rear end of the box body (2), a second handle (34) is arranged at the top of the storage box (16), a supporting unit (4), a connecting unit (5) and a telescopic unit (6) are arranged in the storage box (16), a first partition plate (20) is arranged in the middle of the front side of the second partition plate (36), a first support plate (32) and a second support plate (33) are arranged at the top of the left side of the first partition plate (20), the second supporting plate (33) is positioned above the first supporting plate (32), a second display (37) is arranged at the left end of the front side surface of the box body (2), and fixing units (10) are arranged at the bottoms of the left side and the right side of the box body (2);

wherein: still include singlechip (3), singlechip (3) set up the right side surface at box (2), the input of air pump (24) and second display (37) is connected to the output electricity of singlechip (3), the output of battery (35) is connected to the input electricity of singlechip (3).

2. The portable natural gas pipeline leakage detection device of claim 1, wherein: bracketing unit (4) contain connecting rod (401), spacing ring (402), adapter sleeve (403), locating piece (404) and arm layer board (405), connecting rod (401) are "Z" shape structure, connecting rod (401) set up the inside at receiver (16), the one end of connecting rod (401) is provided with arm layer board (405), the other end slidable mounting of connecting rod (401) has adapter sleeve (403), adapter sleeve (403) are located between two spacing rings (402) that set up on connecting rod (401), spacing ring (402) are spacing to adapter sleeve (403) respectively, the tip surface of connecting rod (401) other end is provided with locating piece (404), and locating piece (404) are "ten" font structure.

3. The portable natural gas pipeline leakage detection device of claim 2, wherein: the connecting unit (5) comprises a detection box (501), a buzzer (502), a battery compartment cover plate (503), a battery compartment (504), a first display (505) and a connecting screw rod (506), the detection box (501) is arranged inside the storage box (16), the battery compartment (504) is arranged at the left end of the top of the detection box (501), a battery is arranged in the battery compartment (504), the battery compartment cover plate (503) is arranged at the top of the battery compartment (504), the buzzer (502) is arranged on the left side of the battery compartment (504), the first display (505) is arranged at the right end of the top of the detection box (501), the connecting screw rod (506) is arranged at the center of the left side of the detection box (501), a positioning groove arranged at the end of the left side of the connecting screw rod (506) is connected with the positioning block (404) in a sliding manner, and the connecting screw rod (506) is connected with the inner side of the connecting sleeve (403) in a threaded manner, the buzzer (502) and the input end of the first display (505) are electrically connected with the output end of the battery in the battery bin (504).

4. The portable natural gas pipeline leakage detection device of claim 3, wherein: the telescopic unit (6) comprises a rotating cylinder (601), a detection cylinder (602), a fixed cylinder (603), a sliding block (604), a sliding groove (605), an annular clamping groove (606), a dust screen (607), an annular clamping block (608), a spiral sliding groove (609), a detection bin (610) and a gas detector (611), the fixed cylinder (603) is fixedly installed at the center of the right side of the detection box (501), the sliding grooves (605) are symmetrically formed in the middle of the fixed cylinder (603) in the front and back direction, the sliding groove (605) is of a Z-shaped structure, the annular clamping groove (606) is arranged at the left end of the fixed cylinder (603), the annular clamping groove (606) is in sliding connection with the annular clamping block (608) arranged on the rotating cylinder (601), the spiral sliding groove (609) is arranged on the inner side of the rotating cylinder (601), the detection cylinder (602) is slidably installed on the inner side of the fixed cylinder (603), and the sliding block (604) arranged at the bottom of the detection cylinder (602) is respectively in sliding connection with the sliding groove (605) and the spiral sliding groove (609) Inboard sliding connection, the right-hand member of detecting a section of thick bamboo (601) is provided with detects storehouse (610), the inside of detecting storehouse (610) is provided with gaseous detector (611), the right-hand member that detects storehouse (610) is provided with dust screen (607), the output of battery in battery compartment (504) is connected to the input electricity of gaseous detector (611).

5. The portable natural gas pipeline leakage detection device of claim 1, wherein: the detection unit (7) comprises a first motor (701), a crankshaft (702), a second connecting rod (703), a first fixing plate (704), a spherical connecting piece (705), a piston (706), a pumping cylinder (707), a conical funnel (708), a blocking ball (709), a first connecting pipe (710), a natural gas sensor (711), a second connecting pipe (712), a gas filter box (713), an active carbon filter plate (714), an electric telescopic rod (715), a fixing seat (716), a connecting plate (717), a telescopic cylinder (718) and a one-way valve (719), wherein the pumping cylinder (707) is arranged at the centers of a first supporting plate (32) and a second supporting plate (33), the conical funnel (708) is arranged at the center inside of the pumping cylinder (707), the blocking ball (709) is movably arranged inside the conical funnel (708), the piston (706) is slidably mounted at the top of the inner side of the pumping cylinder (707), a spherical connecting piece (705) is arranged in a spherical groove formed in the top of the piston (706) in a sliding mode, a second connecting rod (703) is arranged on the top of the spherical connecting piece (705), a crankshaft (702) is connected to the top of the second connecting rod (703) in a rotating mode, the left end and the right end of the crankshaft (702) are respectively connected with a first fixing plate (704) arranged on a second supporting plate (33) in a rotating mode, a first motor (701) is arranged on the front side of one first fixing plate (704), an output shaft of the first motor (701) is fixedly connected with one end of the crankshaft (702), a first connecting pipe (710) is arranged in the middle of a pump suction cylinder (707), the first connecting pipe (710) is located on the top of a conical funnel (708), a one-way valve (719) is arranged inside the first connecting pipe (710), and the other end of the first connecting pipe (710) penetrates through a first supporting plate (32) and is communicated with one end of the second connecting pipe (712), a natural gas sensor (711) is arranged between the first connecting pipe (710) and the second connecting pipe (712), the other end of the second connecting pipe (712) is communicated with a gas filtering box (713) arranged at the left end of the top of the first supporting plate (32), activated carbon filtering plates (714) are arranged in the gas filtering box (713) in an equidistant array manner, the other end of the gas filtering box (713) is communicated with an exhaust window (27) arranged at the left side of the box body (2), an electric telescopic rod (715) is arranged at the bottom of the pumping cylinder (707), the electric telescopic rod (715) is fixedly connected with the outer side of the pumping cylinder (707) through a fixing seat (716), the telescopic end of the electric telescopic rod (715) is fixedly connected with the outer side of a telescopic cylinder (718) arranged at the bottom of the pumping cylinder (707) through a connecting plate (717), and the telescopic cylinder (718) is concentric with the first detection hole (29), the output end of the single chip microcomputer (3) is electrically connected with the input end of the electric telescopic rod (715) through the first motor (701), and the output end of the natural gas sensor (711) is electrically connected with the input end of the single chip microcomputer (3).

6. The portable natural gas pipeline leakage detection device of claim 1, wherein: the drilling unit (8) comprises two second motors (801), a worm wheel (802), a worm (803), two second fixing plates (804), a threaded rod (805), a drill bit (806), a lifting platform (807), sliding rods (808), drill rods (809) and a third motor (810), the two second fixing plates (804) are respectively arranged at the right end in the box body (2) in a bilateral symmetry manner, the worm (803) is rotatably arranged between the two second fixing plates (804), the second motor (801) is arranged on the left side of one second fixing plate (804), an output shaft of the second motor (801) penetrates through a through hole formed in the second fixing plate (804) and is fixedly connected with one end of the worm (803), the threaded rod (805) is rotatably arranged at the right end in the box body (2), the lifting platform (807) is in threaded connection with the threaded rod (805), elevating platform (807) are "Z" font structure, both ends set up slide bar (808) sliding connection that the slide opening set up respectively with the inside right-hand member of box (2) about elevating platform (807), the top fixed mounting of elevating platform (807) has third motor (810), the output shaft of third motor (810) passes through the through-hole and drilling rod (809) fixed connection that set up on elevating platform (807), the bottom of drilling rod (809) is provided with drill bit (806), and drill bit (806) and third inspection hole (31) are concentric, the bottom of threaded rod (85) is provided with worm wheel (82), tooth and worm (803) meshing on worm wheel (82), the output of singlechip (3) is connected to the input electricity of second motor (801) and third motor (810).

7. The portable natural gas pipeline leakage detection device of claim 5, wherein: the filtering unit (9) comprises a third connecting pipe (901), a thermal insulation box (902), a first cleaning pipe (903), a second cleaning pipe (904), a third cleaning pipe (905), an explosion-proof valve (906), a dustproof filtering plate (907), a feed hopper (908) and a feed pipe (909), wherein the first cleaning pipe (903) is arranged at the bottom of the pump suction cylinder (707), the right side of the first cleaning pipe (903) is equidistantly provided with four second cleaning pipes (904), the second cleaning pipes (904) are respectively communicated with the third cleaning pipe (905) arranged in the pump suction cylinder (707), the third cleaning pipe (905) is of a U-shaped structure, the upper end and the lower end of the third cleaning pipe (905) are respectively provided with nozzles in an equidistant array manner, the bottom of the third cleaning pipe (905) is respectively provided with the dustproof filtering plate (907), and the dustproof filtering plate (907) is respectively arranged at the bottom of the inner side of the pump suction cylinder (707), the top of purge tube (903) is provided with separates temperature box (902), the left end that separates temperature box (902) is provided with third connecting pipe (901), third connecting pipe (901) and blast pipe (25) intercommunication, separate temperature box (902) and feeder hopper (904) intercommunication that box (2) left side set up, the top of feeder hopper (904) is provided with inlet pipe (909), explosion-proof valve (906) set up in the bottom of pump suction tube (707), and explosion-proof valve (906) are located between cone funnel (708) and purge tube three (905), the output of singlechip (3) is connected to the input electricity of explosion-proof valve (906).

8. The portable natural gas pipeline leakage detection device of claim 1, wherein: fixed unit (10) contain locating hole (1001), fixed block (1002), bolt (1003) and bolt buckle (1004), fixed block (1002) are provided with two, fixed block (1002) bilateral symmetry sets up in the left and right sides bottom of box (2) respectively, slidable mounting has bolt (1003) respectively in the through-hole that fixed block (1002) middle part set up, the one end of bolt (1003) respectively with bolt buckle (1004) activity joint on box (2), the other end of bolt (1003) is pegged graft with locating hole (1001) activity that both ends equidistance array set up about bottom plate (1) respectively.

9. The portable natural gas pipeline leakage detection device of claim 1, wherein: the cleaning unit (11) comprises a ring pipe (1101), an air nozzle (1102), a fourth connecting pipe (1103), a connecting hose (1104) and a fixed pipe (1105), wherein the ring pipe (1101) is arranged at the center of the bottom plate (1), the ring pipe (1101) and the second detection hole (30) are concentrically arranged, the diameter of the ring pipe (1101) is equal to that of the second detection hole (30), the air nozzles (1102) are arranged on the bottom of the ring pipe (1101) in an equidistant circumferential array mode, the fourth connecting pipe (1103) is arranged at one end of the ring pipe (1101), the fourth connecting pipe (1103) is communicated with the fixed pipe (1105) arranged at the rear end of the bottom plate (1), and the fixed pipe (1105) is communicated with the exhaust pipe (25) through the connecting hose (1104).

10. The portable natural gas pipeline leakage detection device of claim 1, wherein: still include first handle (18) and access door (19), access door (19) slidable mounting is in the rectangle spout that the right side of box (2) set up, the right-hand member middle part of access door (19) is provided with first handle (18).

11. The portable natural gas pipeline leakage detection device of claim 1, wherein: still include baffle (21) and hinge (22), baffle (21) set up four, baffle (21) rotate through hinge (22) respectively and install the top all around at bottom plate (1).