CN219036319U - A natural gas pipeline leak detector - Google Patents

Abstract

The utility model discloses a natural gas pipeline leakage detector, which relates to the technical field of gas detection and comprises a C-shaped frame, wherein two sliding rods which are arranged in parallel are fixedly connected inside the C-shaped frame, a first sliding frame and a second sliding frame are connected to the two sliding rods in a sliding manner, and a first upper clamping ring and a second upper clamping ring are respectively and movably connected above the first sliding frame and the second sliding frame through rotating shafts; under the cooperation of the two rubber corrugated sleeves and the first sliding frame, the outside of the natural gas pipeline joint is positioned in a sealed cavity, when the pipeline joint leaks, natural gas can gather in the cavity, a natural gas sensor senses the leaked natural gas and transmits monitoring information to a controller, and a display screen on the controller can be used for observing the leakage value of the pipeline joint; the testing mode can enable the pipeline joint to be in a sealed state, and when the outdoor pipeline is detected, the pipeline joint is not affected by wind power, so that the pipeline joint has high accuracy in detection.

Description

A natural gas pipeline leak detector

technical field

The utility model specifically relates to the technical field of gas detection, in particular to a natural gas pipeline leakage detector.

Background technique

As the importance of gas in life gradually increases, people pay more and more attention to the safety and environmental protection of gas pipelines, and the pipelines used to transport natural gas are extremely important, and it is necessary to regularly detect whether the pipelines are leaking. Traditional natural gas leak detection uses the soapy water spray method, and it is judged whether there is a leak by observing whether the soapy water sprayed on the pipeline bubbles.

Chinese Patent Announcement No. CN 215951133 U discloses a natural gas pipeline leakage detection device, comprising: a pipeline main body; a fixed ring, the fixed rings are fixedly installed on both sides of the pipeline main body; a fixed box, the fixed box is fixedly installed On the top of the fixed ring; control structure, the control structure is fixedly installed inside the fixed box, the control structure includes a chute, the inside of the chute is slidably connected with a slider, the top of the slider and In order to be provided with a spring with the inside of the chute, the left side of the slide block is fixedly connected with an air bag, the top of the air bag is fixedly equipped with a touch head, and the top of the fixed box inside is fixedly equipped with an alarm switch.

The natural gas pipeline leakage detection device is to directly fix the detection device at the joint of the pipeline for real-time monitoring, but due to the long laying distance of the pipeline and the large number of pipe joints, many detection devices are required for installation and real-time monitoring, which is very difficult. The installation cost of the gas company has been greatly increased. According to the analysis of the pipeline leakage situation in the city, the pipeline leakage is mainly caused by three-party damage, such as ground subsidence and fracturing, motor vehicle crashes or other construction equipment crashes. Therefore, it is obviously unnecessary to install a leak detection device on each pipe joint, and the cost and later maintenance are extremely high.

Chinese patent announcement number CN 208295561 U discloses a natural gas pipeline leakage detection device, its structure includes switch buttons, main body, connecting wires, sound alarm, control panel, connectors, sensors, probes, adjustment buttons, indicator lights, lights Alarm, display screen, and switch buttons are embedded and installed on the front surface of the control panel. The utility model is a natural gas pipeline leakage detection device. Finally, the controller controls the stepper motor to drive the bevel gear to rotate, so that the matching gear rotates, and the driven gear rotates at the same time, so that the mounting plate and the contact piece rotate together. By changing the contact position of the contact piece and the resistance coil, it is used to change The magnitude of the current passing through the warning light.

The detection device in the above patent is a hand-held detector. When this detection device detects outdoor pipelines, its accuracy is affected by the leakage area of the pipeline and the wind force. Once the wind force is strong, the leaked gas will be blown away. It is difficult for the detection device to monitor the leakage of natural gas.

To this end, we provide a hand-held natural gas pipeline leakage monitoring device, which is not only easy to carry, but also not affected by wind force when monitoring outdoor pipeline leakage, and has better accuracy and sensitivity.

Utility model content

The purpose of this utility model is to provide a natural gas pipeline leakage detector to solve the above-mentioned technical problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A natural gas pipeline leak detector, comprising a C-shaped frame, the inside of the C-shaped frame is fixedly connected with two sliding bars arranged parallel to each other, and the two sliding bars are slidably connected with a first sliding frame and a second sliding frame frame, above the first sliding frame and the second sliding frame are respectively movably connected with a first upper snap ring and a second upper snap ring through a rotating shaft; between the first sliding frame and the second sliding frame A rubber corrugated sleeve is bonded between the first upper snap ring and the second upper snap ring, and a fixed piece is embedded in the rubber corrugated sleeve between the first upper snap ring and the second upper snap ring; A natural gas sensor is embedded on the above-mentioned fixed piece.

As a further technical solution of the present invention, the first sliding frame and the second sliding frame are screwed to the two-way screw; both ends of the two-way screw are connected to the C-shaped frame through bearings, and one end It is also connected with the drive motor in transmission; the drive motor is fixed on the C-shaped frame and fixedly connected.

As a further technical solution of the present utility model, one side of the first upper snap ring and the second upper snap ring is provided with air struts, and the two air struts are connected with the first sliding frame and the second sliding frame respectively. Move rack activity connection.

As a further technical solution of the present invention, rubber snap rings are bonded to the inner sides of the first sliding frame, the second sliding frame, the first upper snap ring and the second upper snap ring.

As a further technical solution of the present utility model, both the natural gas sensor and the drive motor are electrically connected to the controller and the battery; the controller is also electrically connected to the battery.

As a further technical solution of the utility model, the controller is fixed on the upper end of the C-shaped frame; the battery is arranged on one side of the C-shaped frame, and a handle is riveted in the middle of the C-shaped frame.

Compared with the prior art, the beneficial effects of the utility model are:

1. In this utility model, when in use, first lift the first upper snap ring and the second upper snap ring, and then put the first sliding frame and the first upper snap ring together with the second sliding frame and the second upper snap ring The snap rings are respectively placed on both sides of the natural gas pipeline joint, and then the first upper snap ring and the second upper snap ring are gently pressed. Under the jacking action of the air support, the first upper snap ring is snapped into the first sliding frame , the second upper snap ring is clamped with the second sliding frame. With the cooperation of the two rubber bellows and the first sliding frame, the outside of the natural gas pipeline joint is in a sealed cavity. When the detected pipeline joint When a leak occurs, natural gas will accumulate inside. At this time, the natural gas sensor senses the leaked natural gas and transmits the monitoring information to the controller. The leakage value of the pipeline joint can be seen through the display screen on the controller; The above test method can make the pipe joints in a sealed state, and will not be affected by wind force when testing outdoor pipelines, and has high detection accuracy;

2. In the present utility model, although the diameters of the natural gas pipelines are large and small, but the diameter difference is not large, the inner side of the first sliding frame, the second sliding frame, the first upper snap ring and the second upper snap ring are arranged The rubber snap ring has a certain degree of elasticity when clamping the pipe, which can not only adapt to the use of different pipe diameters, thus improving the scope of application of the detection device;

3. In this utility model, since the natural gas pipeline joints are connected by pipe joints or flanges, the connection thickness is different. When the drive motor drives the two-way screw to rotate, the first sliding frame and the second sliding frame can be realized. The relative or opposite movement can be adjusted according to the thickness of the pipeline connection; the rubber bellows has a certain elasticity, so that it can cooperate with the inward or outward movement of the first sliding frame and the second sliding frame.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a schematic diagram of the structure on the left side of Fig. 1 in the utility model.

Fig. 3 is the front view of Fig. 1 in the utility model.

Fig. 4 is a schematic diagram of the bottom structure of Fig. 1 in the utility model.

Fig. 5 is a partially enlarged schematic diagram of Fig. 1 in the present invention.

In the figure: 1-handle, 2-C-shaped frame, 3-first sliding frame, 4-second sliding frame, 5-rubber corrugated sleeve, 6-first upper snap ring, 7-second upper snap ring , 8-air support, 9-controller, 10-battery, 11-slider, 12-two-way screw, 13-drive motor, 14-fixer, 15-natural gas sensor, 16-rubber snap ring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1-5, in the utility model embodiment, a kind of natural gas pipeline leakage detector comprises C-shaped frame 2, and the interior of this C-shaped frame 2 is fixedly connected with two sliding rods 11 that are arranged parallel to each other, and the two The first sliding frame 3 and the second sliding frame 4 are slidably connected on the first sliding bar 11, and the first upper snap ring is movably connected with the first sliding frame 3 and the second sliding frame 4 respectively through the rotating shaft. 6 and the second upper snap ring 7; rubber corrugated sleeves are bonded between the first sliding frame 3 and the second sliding frame 4 and between the first upper snap ring 6 and the second upper snap ring 7 5, wherein the rubber bellows 5 between the first upper snap ring 6 and the second upper snap ring 7 is embedded with a fixed piece 14; the fixed piece 14 is embedded with a natural gas sensor 15.

In this embodiment, one side of the first upper snap ring 6 and the second upper snap ring 7 is provided with air struts 8, and the two aforementioned air struts 8 are respectively connected with the first sliding frame 3 and the second The sliding frame 4 is flexibly connected.

By adopting the above-mentioned technical scheme, when in use, the first upper snap ring 6 and the second upper snap ring 7 are first lifted, and then the first sliding frame 3 and the first upper snap ring 6 are connected to the second sliding frame 4 and the second upper snap ring 7 are respectively placed on both sides of the natural gas pipeline joint, and then the first upper snap ring 6 and the second upper snap ring 7 are gently pressed. The ring 6 is clamped with the first sliding frame 3, and the second upper snap ring 7 is clamped with the second sliding frame 4. With the cooperation of the two rubber bellows 5 and the first sliding frame 3, the natural gas pipeline joint The outside is in a sealed cavity. When the detected pipeline joint leaks, natural gas will accumulate inside. At this time, the natural gas sensor 15 senses the leaked natural gas and transmits the monitoring information to the controller 9. The display screen on the controller 9 can see the leakage value of the pipeline joint; the above test method can make the pipeline joint in a sealed state, and when the outdoor pipeline is detected, it will not be affected by the wind force and has a high detection accuracy. precision.

In this embodiment, rubber snap rings 16 are bonded to the inner sides of the first sliding frame 3 , the second sliding frame 4 , the first upper snap ring 6 and the second upper snap ring 7 .

By adopting the above technical scheme, although the diameters of the natural gas pipelines are large and small, but the diameter difference is not large, it is arranged on the first sliding frame 3, the second sliding frame 4, the first upper snap ring 6 and the second upper snap ring. The rubber snap ring 16 inside the ring 7 has a certain degree of elasticity when clamping the pipe, which can be used with different pipe diameters, thereby improving the scope of application of the detection device.

In this embodiment, the first sliding frame 3 and the second sliding frame 4 are screwed to the two-way screw rod 12; both ends of the two-way screw rod 12 are connected to the C-shaped frame 2 through bearings, and wherein One end is also transmission-connected with the drive motor 13; the drive motor 13 is fixed on the C-shaped frame 2 and fixedly connected.

Specifically, the natural gas sensor 15 and the drive motor 13 are both electrically connected to the controller 9 and the battery 10 ; the controller 9 is also electrically connected to the battery 10 .

By adopting the above technical scheme, since the natural gas pipeline joints are connected by pipe joints or flanges, the connection thicknesses are different. When the driving motor 13 drives the two-way screw rod 12 to rotate, the first sliding frame 3 and the second sliding frame can be realized. The relative or opposite movement of the sliding frame 4 can be adaptively adjusted according to the thickness of the pipe connection; and the rubber bellows 5 has a certain degree of elasticity, so that it can cooperate with the inward movement of the first sliding frame 3 and the second sliding frame 4 or outward movement.

In this embodiment, the controller 9 is fixed on the upper end of the C-shaped frame 2 ; the battery 10 is arranged on one side of the C-shaped frame 2 , and the handle 1 is riveted in the middle of the C-shaped frame 2 .

The working principle of the utility model is: when in use, first lift the first upper snap ring 6 and the second upper snap ring 7, then lift the first sliding frame 3 and the first upper snap ring 6 with the second sliding frame The moving frame 4 and the second upper snap ring 7 are respectively placed on both sides of the natural gas pipeline joint, and then the first upper snap ring 6 and the second upper snap ring 7 are gently pressed. The upper snap ring 6 is engaged with the first sliding frame 3, and the second upper snap ring 7 is engaged with the second sliding frame 4. With the cooperation of the two rubber bellows 5 and the first sliding frame 3, the natural gas The outside of the pipeline joint is in a sealed cavity. When the detected pipeline joint leaks, natural gas will accumulate inside. At this time, the natural gas sensor 15 senses the leaked natural gas and transmits the monitoring information to the controller 9 , the leakage value of the pipeline joint can be seen through the display screen on the controller 9; the above test method can make the pipeline joint in a sealed state, and will not be affected by the wind force when testing the outdoor pipeline, and has the ability to detect high precision;

Although the diameters of the natural gas pipelines are large and small, the diameters are not much different. The ring 16 has a certain degree of elasticity when clamping the pipe, which can be used with different pipe diameters, thus improving the scope of application of the detection device;

Since the natural gas pipeline joints are connected by pipe joints or flanges, the connection thicknesses are different. When the drive motor 13 drives the two-way screw rod 12 to rotate, the first sliding frame 3 and the second sliding frame 4 can be opposite or opposite to each other. Move toward each other, so that adaptive adjustment can be made according to the thickness of the pipeline connection; while the rubber bellows 5 has certain elasticity, so that it can cooperate with the inward or outward movement of the first sliding frame 3 and the second sliding frame 4 .

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. A natural gas pipeline leak detector, characterized by: the sliding rod type sliding mechanism comprises a C-shaped frame (2), wherein two sliding rods (11) which are arranged in parallel are fixedly connected inside the C-shaped frame (2), a first sliding frame (3) and a second sliding frame (4) are connected to the two sliding rods (11) in a sliding manner, and a first upper clamping ring (6) and a second upper clamping ring (7) are respectively and movably connected above the first sliding frame (3) and the second sliding frame (4) through rotating shafts; rubber corrugated sleeves (5) are bonded between the first sliding frame (3) and the second sliding frame (4) and between the first upper clamping ring (6) and the second upper clamping ring (7), and fixing sheets (14) are embedded on the rubber corrugated sleeves (5) between the first upper clamping ring (6) and the second upper clamping ring (7); the fixing piece (14) is embedded with a natural gas sensor (15).

2. A natural gas pipeline leak detector as defined in claim 1, wherein: the first sliding frame (3) and the second sliding frame (4) are in threaded connection with the bidirectional screw rod (12); two ends of the bidirectional screw rod (12) are rotatably connected with the C-shaped frame (2) through bearings, and one end of the bidirectional screw rod is also in transmission connection with the driving motor (13); the driving motor (13) is fixed on the C-shaped frame (2) and fixedly connected.

3. A natural gas pipeline leak detector as defined in claim 2, wherein: one side of the first upper clamping ring (6) and one side of the second upper clamping ring (7) are respectively provided with an air support (8), and the two air supports (8) are respectively and movably connected with the first sliding frame (3) and the second sliding frame (4).

4. A natural gas pipeline leak detector as defined in claim 3, wherein: the inner sides of the first sliding frame (3), the second sliding frame (4), the first upper clamping ring (6) and the second upper clamping ring (7) are bonded with rubber clamping rings (16).

5. The natural gas pipeline leak detector of claim 4, wherein: the natural gas sensor (15) and the driving motor (13) are electrically connected with the controller (9) and the storage battery (10); the controller (9) is also electrically connected with the storage battery (10).

6. A natural gas pipeline leak detector as defined in claim 5, wherein: the controller (9) is fixed at the upper end of the C-shaped frame (2); the storage battery (10) is arranged on one side of the C-shaped frame (2), and a handle (1) is riveted at the middle position of the C-shaped frame (2).

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