A gas leakage detection device for patrolling natural gas pipelines

Abstract

The utility model relates to the technical field of natural gas leakage detectors, specifically a leakage detection device for natural gas pipeline patrol, a U-shaped protective cover, and a natural gas leakage detector arranged on the inner wall of the U-shaped protective cover; a driving component, the driving component includes strip grooves symmetrically opened on the inner walls of both sides of the U-shaped protective cover, and a sliding plate slidably arranged on the inner walls of the two strip grooves; an extension component, the extension component includes a fixed cylinder fixed on the lower surface of the U-shaped protective cover. The utility model sets the driving component and the extension component, so that during the actual use of the natural gas leakage detector, the motor can be started to drive the natural gas leakage detector to move upward and out of the U-shaped protective cover, and at the same time, the fixed cylinder can be driven to extend outward from the inside of the grip, so that personnel can hold the grip to adjust the extension length of the detection probe, thereby effectively reducing the burden on personnel and bringing convenience to the detection work.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas leakage detectors, in particular to a leakage detection device for natural gas pipeline patrol. Background Art

[0002] A natural gas pipeline refers to a pipeline that transports natural gas (including associated gas produced in oil fields) from the mining site or processing plant to the urban gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. During the inspection and maintenance of the natural gas pipeline, a gas leakage detection device is required to detect whether there is a leak at the joints of the transmission pipeline.

[0003] In the prior art, a Chinese patent with announcement number CN219244899U discloses a gas leakage detection device for operation and maintenance of a natural gas well station, which adopts the scheme of "including a natural gas leakage detector, a metal hose is fixedly installed on the top surface of the natural gas leakage detector, a detection head is fixedly installed on the end of the metal hose away from the natural gas leakage detector, and the clamping and fixing plate compresses the spring under the action of the pressing and pushing force of the metal hose to make it move toward the inside of the installation groove, so as to facilitate the metal hose to enter the inside of the U-shaped mounting block and be located in the arc groove between the two clamping and fixing plates". This scheme can clamp and fix the metal hose inside the arc groove through the spring and the clamping and fixing plate, and try to avoid the metal hose and the detection head from swinging during the movement, thereby improving the protection of the detection head. The device has a simple structure and is easy to operate, can effectively fix the metal hose and the detection head, and has good overall practicality.

[0004] However, the above scheme still has some shortcomings. For example, when the gas well station operation and maintenance gas leakage detection device is actually used to detect the connection parts of the natural gas pipeline, due to the fixed length of the metal hose, when detecting some deeper areas, personnel need to use the length of their arms to hold the natural gas leakage detector and extend their arms into the detection area for detection, which seriously increases the burden on personnel.

[0005] In view of this, the utility model proposes a gas leakage detection device for patrolling and protecting a natural gas pipeline. Utility Model Content

[0006] The utility model aims to provide a gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline, comprising:

[0008] A U-shaped protective cover, and a natural gas leakage detector arranged on the inner wall of the U-shaped protective cover, wherein a metal detection tube is arranged at the top of the natural gas leakage detector, and a detection probe is arranged at the top of the metal detection tube;

[0009] A driving assembly, which is used to drive the natural gas leakage detector to slide out of the U-shaped protective cover, the driving assembly includes strip grooves symmetrically arranged on the inner walls of both sides of the U-shaped protective cover, and sliding plates slidably arranged on the inner walls of the two strip grooves, a rectangular cavity is opened inside the cover body at the bottom end of the U-shaped protective cover, a lead screw is rotatably arranged on the inner wall of the strip groove, and the bottom end of the lead screw extends to the inside of the rectangular cavity, and connecting rods are rotatably arranged on the inner walls of both sides of the rectangular cavity, the driving assembly also includes a motor fixedly arranged on the inner bottom wall of the U-shaped protective cover for driving the two lead screws to rotate simultaneously, and the output end of the motor extends to the inside of the rectangular cavity and is fixedly provided with a rotating shaft;

[0010] An extension assembly, the extension assembly includes a fixed cylinder fixedly mounted on the lower surface of the U-shaped protective cover, and a gripping cylinder slidably mounted on the outer surface of the fixed cylinder, the bottom end of the rotating shaft extends to the interior of the fixed cylinder and is fixedly provided with a threaded column, and the inner bottom wall of the gripping cylinder is fixedly provided with an internal threaded cylinder threadedly connected to the outer surface of the threaded column;

[0011] A drainage component is used to drain the air at the connection of the natural gas pipeline.

[0012] As a preferred technical solution, the natural gas leakage detector is fixed on the upper surface of the sliding plate, and the upper surface of the sliding plate is provided with threaded holes threadedly connected to the outer surfaces of the two lead screws.

[0013] As a preferred technical solution, four limit rods are fixedly provided on the outer surface of the top end of the internally threaded tube in a circular array, and the inner wall of the fixed tube is provided with four strip-shaped limit openings for the four limit rods to slide, and one end of the limit rod away from the internally threaded tube is fixedly connected to the inner wall of the grip tube.

[0014] As a preferred technical solution, a mounting groove is provided at the bottom end of the grip tube, and a charging power source is fixedly provided on the inner wall of the mounting groove, and a controller is provided on the outer surface of the grip tube.

[0015] As a preferred technical solution, one end of the connecting rod and the bottom end of the lead screw are fixed with mutually meshing bevel gears, the other end of the connecting rod is fixed with a driven bevel gear, and the outer surface of the rotating shaft is fixed with a driving bevel gear that meshes with the two driven bevel gears.

[0016] As a preferred technical solution, the drainage component includes a small fan fixed on the top of the natural gas leakage detector, and a sleeve sleeved on the outer surface of the metal detection tube.

[0017] As a preferred technical solution, a drainage channel is formed between the inner annular surface of the sleeve and the outer annular surface of the metal detection tube, and the suction end of the small fan is provided with an air suction pipe extending into the drainage channel. Beneficial Effects

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model provides a driving component and an extension component, so that during actual use of the natural gas leak detector, the motor can be started to drive the natural gas leak detector to move upward and out of the U-shaped protective cover, and at the same time, the fixing tube can be driven to extend outward from the inside of the grip tube, so that a person can hold the grip tube to adjust the extension length of the detection probe, thereby effectively reducing the burden on the person and bringing convenience to the detection work.

[0020] The utility model is provided with a drainage component, and during detection, a small fan can be started to make the top of the casing absorb the air around the natural gas pipeline, so that the detection probe can detect the air around the natural gas pipeline more smoothly, thereby improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the disk of the utility model;

[0024] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0026] Figure 5 It is a schematic diagram of the top view of the grip tube of the utility model.

[0027] In the figure:

[0028] 100. U-shaped protective cover;

[0029] 200. Natural gas leak detector;

[0030] 300. Metal detection tube;

[0031] 400, detection probe;

[0032] 500, driving assembly; 501, sliding plate; 502, lead screw; 503, connecting rod; 504, motor; 505, rotating shaft; 506, bevel gear; 507, driven bevel gear; 508, driving bevel gear;

[0033] 600, extension assembly; 601, fixing tube; 602, grip tube; 603, threaded column; 604, internal threaded tube; 605, limit rod;

[0034] 700, drainage assembly; 701, small fan; 702, casing; 703, drainage channel; 704, suction pipe;

[0035] 800, charging power supply;

[0036] 900. Controller. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0038] According to the attached Figure 1-5 As shown, the embodiment of the utility model provides a gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline, comprising:

[0039] A U-shaped protective cover 100, and a natural gas leakage detector 200 arranged on the inner wall of the U-shaped protective cover 100, a metal detection tube 300 is arranged at the top of the natural gas leakage detector 200, and a detection probe 400 is arranged at the top of the metal detection tube 300;

[0040] The driving assembly 500 is used to drive the natural gas leakage detector 200 to slide out of the U-shaped protective cover 100. The setting of the U-shaped protective cover 100 can effectively protect the natural gas leakage detector 200 on the one hand, and can facilitate the natural gas leakage detector 200 to extend out of the U-shaped protective cover 100 on the other hand.

[0041] The driving assembly 500 includes strip grooves symmetrically provided on the inner walls of both sides of the U-shaped protective cover 100, and sliding plates 501 slidably provided on the inner walls of the two strip grooves. A rectangular cavity is provided inside the cover body at the bottom end of the U-shaped protective cover 100. A lead screw 502 is rotatably provided on the inner wall of the strip groove, and the bottom end of the lead screw 502 extends to the inside of the rectangular cavity. Connecting rods 503 are rotatably provided on the inner walls of both sides of the rectangular cavity. The driving assembly 500 also includes a motor 504 fixedly provided on the inner bottom wall of the U-shaped protective cover 100 for driving the two lead screws 502 to rotate simultaneously. The output end of the motor 504 extends to the inside of the rectangular cavity and is fixedly provided with a rotating shaft 505.

[0042] The natural gas leakage detector 200 is fixed on the upper surface of the sliding plate 501 . The upper surface of the sliding plate 501 is provided with threaded holes that are threadedly connected to the outer surfaces of the two lead screws 502 . The sliding plate 501 can be lifted and lowered by rotating the lead screws 502 .

[0043] One end of the connecting rod 503 and the bottom end of the lead screw 502 are fixedly provided with mutually meshing bevel gears 506, the other end of the connecting rod 503 is fixedly provided with a driven bevel gear 507, and the outer surface of the rotating shaft 505 is fixedly provided with an active bevel gear 508 that meshes with the two driven bevel gears 507, so that the two lead screws 502 can be rotated simultaneously by the rotation of the motor 504.

[0044] The extension assembly 600 includes a fixed cylinder 601 fixed on the lower surface of the U-shaped protective cover 100, and a grip cylinder 602 slidably arranged on the outer surface of the fixed cylinder 601. The bottom end of the rotating shaft 505 extends to the inside of the fixed cylinder 601 and is fixed with a threaded column 603. The inner bottom wall of the grip cylinder 602 is fixed with an internal threaded cylinder 604 threadedly connected to the outer surface of the threaded column 603, and the internal threaded cylinder 604 can be driven to move by the rotation of 603.

[0045] Four limiting rods 605 are fixedly arranged in a circular array on the outer surface of the top end of the internal threaded tube 604, and four strip-shaped limiting openings are opened on the inner wall of the fixed tube 601 for the four limiting rods 605 to slide. One end of the limiting rod 605 away from the internal threaded tube 604 is fixedly connected to the inner wall of the grip tube 602. The setting of the limiting rod 605 effectively ensures the stability of the grip tube 602 when it moves.

[0046] A mounting groove is provided at the bottom of the grip tube 602, and a charging power source 800 is fixedly provided on the inner wall of the mounting groove. A controller 900 is provided on the outer surface of the grip tube 602 to facilitate control of the charged components.

[0047] In this embodiment, by providing a driving assembly 500 and an extension assembly 600, the natural gas leak detector 200 can be turned on and the grip tube 602 can be held when detecting a deeper area during actual use, and the motor 504 can be started by the controller 900. The rotation of the motor 504 drives the rotating shaft 505 to rotate, and the rotation of the rotating shaft 505 drives the active bevel gear 508 to rotate. The rotation of the active bevel gear 508 drives the two driven bevel gears 507 to rotate, and the rotation of the driven bevel gear 507 drives the connecting rod 503 to rotate. The rotation of the connecting rod 503 is driven by the two bevel gears 506. The lead screw 502 is driven to rotate, so that the two lead screws 502 rotate at the same time, and the rotation of the lead screw 502 drives the sliding plate 501 to move upward, thereby driving the natural gas leakage detector 200 to move upward and move out of the U-shaped protective cover 100, so as to extend the detection probe 400. At the same time, the rotation of the rotating shaft 505 can drive the threaded column 603 to rotate. The rotation of the threaded column 603 drives the fixed cylinder 601 to extend outward from the inside of the grip cylinder 602 under the action of the internal threaded cylinder 604, so that personnel can hold the grip cylinder 602 to adjust the extension length of the detection probe 400, thereby effectively reducing the burden on personnel and bringing convenience to the detection work. Example

[0048] On the basis of the first embodiment, and different from the first embodiment,

[0049] A gas leakage detection device for patrolling a natural gas pipeline, further comprising:

[0050] The drainage assembly 700 is used to drain the air at the connection point of the natural gas pipeline.

[0051] The drainage assembly 700 includes a small fan 701 fixed on the top of the natural gas leakage detector 200 and a sleeve 702 sleeved on the outer surface of the metal detection tube 300.

[0052] A drainage channel 703 is formed between the inner annular surface of the sleeve 702 and the outer annular surface of the metal detection tube 300 , and an air suction pipe 704 extending to the inside of the drainage channel 703 is provided at the air suction end of the small fan 701 .

[0053] In this embodiment, by setting up the drainage component 700, when the natural gas leak detector 200 is turned on and the natural gas pipeline leak is detected through the detection probe 400, the small fan 701 can be started through the controller 900, so that the small fan 701 sucks the inside of the drainage channel 703 through the suction pipe 704, so that the top of the sleeve 702 absorbs the air around the natural gas pipeline, so that the detection probe 400 can detect the air around the natural gas pipeline more smoothly, thereby improving the accuracy of detection.

[0054] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline, characterized in that: It comprises a U-shaped protective cover (100), and a natural gas leakage detector (200) arranged on the inner wall of the U-shaped protective cover (100); A driving assembly (500) for driving the natural gas leakage detector (200) to slide out of the U-shaped protective cover (100), the driving assembly (500) comprising strip grooves symmetrically arranged on the inner walls of both sides of the U-shaped protective cover (100), and sliding plates (501) slidably arranged on the inner walls of the two strip grooves, a rectangular cavity is arranged inside the cover body at the bottom end of the U-shaped protective cover (100), a lead screw (502) is rotatably arranged on the inner wall of the strip groove, and the bottom end of the lead screw (502) extends to the inside of the rectangular cavity, and connecting rods (503) are rotatably arranged on the inner walls of both sides of the rectangular cavity, and the driving assembly (500) further comprises a motor (504) fixedly arranged on the inner bottom wall of the U-shaped protective cover (100) for driving the two lead screws (502) to rotate simultaneously, and the output end of the motor (504) extends to the inside of the rectangular cavity and is fixedly provided with a rotating shaft (505); An extension assembly (600), the extension assembly (600) comprising a fixing tube (601) fixedly mounted on the lower surface of the U-shaped protective cover (100), and a gripping tube (602) slidably mounted on the outer surface of the fixing tube (601); A drainage assembly (700) is used to drain air at a natural gas pipeline connection.

2. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline according to claim 1, characterized in that: The natural gas leakage detector (200) is fixedly mounted on the upper surface of the sliding plate (501), and the upper surface of the sliding plate (501) is provided with threaded holes that are threadedly connected to the outer surfaces of the two lead screws (502).

3. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline according to claim 1, characterized in that: The bottom end of the rotating shaft (505) extends to the interior of the fixed cylinder (601) and is fixedly provided with a threaded column (603); the inner bottom wall of the gripping cylinder (602) is fixedly provided with an internally threaded cylinder (604) threadedly connected to the outer surface of the threaded column (603); four limiting rods (605) are fixedly provided on the outer surface of the top end of the internally threaded cylinder (604) in a circular array; and the inner wall of the fixed cylinder (601) is provided with four strip-shaped limiting openings for the four limiting rods (605) to slide; and one end of the limiting rod (605) away from the internally threaded cylinder (604) is fixedly connected to the inner wall of the gripping cylinder (602).

4. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline according to claim 1, characterized in that: A mounting groove is provided at the bottom end of the grip tube (602), and a charging power source (800) is fixedly arranged on the inner wall of the mounting groove. A controller (900) is arranged on the outer surface of the grip tube (602).

5. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline according to claim 1, characterized in that: One end of the connecting rod (503) and the bottom end of the lead screw (502) are both fixedly provided with mutually meshing bevel gears (506), the other end of the connecting rod (503) is fixedly provided with a driven bevel gear (507), and the outer surface of the rotating shaft (505) is fixedly provided with a driving bevel gear (508) mutually meshing with the two driven bevel gears (507).

6. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline according to claim 1, characterized in that: The top of the natural gas leakage detector (200) is provided with a metal detection tube (300), and the top of the metal detection tube (300) is provided with a detection probe (400), and the drainage component (700) comprises a small fan (701) fixedly mounted on the top of the natural gas leakage detector (200), and a sleeve (702) sleeved on the outer surface of the metal detection tube (300).

7. A gas pipeline leakage detection device for patrolling and protecting a natural gas pipeline according to claim 6, characterized in that: A drainage channel (703) is formed between the inner annular surface of the sleeve (702) and the outer annular surface of the metal detection tube (300), and an air suction pipe (704) extending into the interior of the drainage channel (703) is provided at the air suction end of the small fan (701).

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