Leakage early warning device for natural gas pipeline transportation

Abstract

The utility model relates to a leakage early warning device for natural gas pipeline transportation, which comprises a limiting assembly, a detection assembly and a PLC (Programmable Logic Controller), the limiting assembly comprises a driver, a semicircular sealing plate I and a semicircular sealing plate II, and the sealing plate I and the sealing plate II are vertically and oppositely arranged and are respectively in transmission connection with the driver; the driver can drive the first sealing plate and the second sealing plate to run to be parallel to each other so as to seal or open the natural gas pipeline. The driver and the detection assembly are used for being installed on a natural gas pipeline and are in communication connection with the PLC. The leakage detection device has the advantages of being simple in structure and reasonable in design, sealing the pipeline at the front end of the detected leakage point through the limiting assembly, facilitating maintenance of workers without affecting normal life of people, monitoring the pipeline and the external environment of the pipeline in real time through the detection assembly, facilitating determination of the leakage point, facilitating maintenance of the workers and improving work efficiency. The problems are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas transportation leakage technical field, concretely relates to a natural gas pipeline transportation leak early warning device. BACKGROUND

[0002] The existing natural gas pipeline transportation leak early warning device has long reflection time when using, cannot achieve timely alarm after detecting leakage, and cannot plug the gas leakage point when overhauling, needs to cut off the natural gas supply of the whole pipeline, which causes certain influence on people's life. UTILITY MODEL CONTENTS

[0003] The utility model provides a natural gas pipeline transportation leak early warning device, aims at solving the prior art problems.

[0004] The utility model solves the above technical problems by the following technical scheme:

[0005] A natural gas pipeline transportation leak early warning device, including restriction component, detection component and PLC controller, the restriction component includes driver and respectively half circle sealing plate no.

[0006] The utility model has the advantages that when using, installs the whole device in position, starts the detector, sends corresponding signal to the PLC controller after detecting that the natural gas pipeline has natural gas leakage, the PLC controller receives corresponding signal and controls the driver to run, and the driver drives sealing plate no.

[0007] The utility model has the advantages of simple structure and reasonable design, seals the front pipeline of the detected leakage point through the restriction component, is convenient for staff to overhaul and does not cause influence on people's normal life, detects the pipeline and its external environment in real time through the detection component, is convenient for determining the leakage point, is convenient for staff to maintain, and is used to solve the above problems.

[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0009] Further, the driver comprises a driving member, a rotating rod, a driving ring one and a driving ring two, the rotating rod is vertically arranged, and the sealing plate two is fixedly connected with the rotating rod; the driving ring one is fixedly sleeved on the upper end of the rotating rod, the driving ring two is rotatably sleeved on the rotating rod and fixedly connected with the sealing plate one; the driving member is in transmission connection with the rotating rod.

[0010] The beneficial effect of the above further scheme is that the structure is simple and reasonable in design, the driving member drives the rotating rod to rotate through the driving ring one and the driving ring two, and the rotating rod drives the sealing plate one and the sealing plate two to operate to close or open the natural gas pipeline.

[0011] Further, three fixed rings two are uniformly and spacedly rotatably sleeved on the rotating rod from top to bottom, the three fixed rings two are respectively fixedly connected with the sealing plate one, and the uppermost fixed ring two is fixedly connected with the driving ring two; two fixed rings one are uniformly and spacedly fixedly sleeved on the rotating rod from top to bottom, the two fixed rings one are respectively and alternately spacedly distributed with the three fixed rings two in sequence, and are respectively fixedly connected with the sealing plate two.

[0012] The beneficial effect of the above further scheme is that the structure is simple and reasonable in design, the sealing plate one is connected with the rotating rod through the three fixed rings two, and the sealing plate two is connected with the rotating rod through the two fixed rings one, so that the rotating rod drives the sealing plate one and the sealing plate two to operate.

[0013] Further, the driving member comprises a fixed plate, a horizontal moving force member and a sliding block, the fixed plate is horizontally fixedly arranged, and the sliding block is horizontally installed in the fixed plate; the horizontal moving force member is connected with the sliding block and is in communication connection with the PLC controller, and is used to drive the sliding block to horizontally move; the driving ring one is connected with the sliding block.

[0014] The beneficial effect of the above further scheme is that when in use, the horizontal moving force member drives the sliding block to move, and the sliding block drives the rotating rod to rotate through the driving ring one.

[0015] Further, the horizontal moving force member is connected with the sliding block through a driving block.

[0016] The beneficial effect of the above further scheme is that the structure is simple and reasonable in design, and the horizontal moving force member drives the sliding block to slide on the fixed plate through the driving block.

[0017] Further, the sliding block is in U-shaped block structure, the closed end of the sliding block is connected with the horizontal moving force member, and two limiting blocks are horizontally and oppositely fixedly installed in the sliding block, and the two limiting blocks are connected with the driving ring one.

[0018] The beneficial effect of the further scheme is simple structure, reasonable design of the slider shape, and driving of the driving ring I and the rotating rod by the two limiting blocks.

[0019] Further, the detection component comprises a detector and a fixing part, the fixing part is used for fixing on the natural gas pipeline, and the detector is fixedly installed on the fixing part and oppositely provided with two rows of air suction holes; the detector is in communication connection with the PLC controller.

[0020] The beneficial effect of the further scheme is simple structure, reasonable design, fixing of the detector on the natural gas pipeline by the fixing part, and convenient assembly; in addition, the PLC controller can receive the signal sent by the detector to control the operation of other components.

[0021] Further, the fixing part comprises a fixing groove and two positioning rings, the two positioning rings are oppositely arranged and used for sleeving on the natural gas pipeline, and the two ends of the two positioning rings are connected by bolts respectively; the fixing groove is fixedly installed on the upper end of the two positioning rings, and the detector is fixedly installed on the fixing groove.

[0022] The beneficial effect of the further scheme is simple structure, reasonable design, clamping of the two positioning rings on the natural gas pipeline, and convenient assembly by bolt connection between the two ends.

[0023] Further, the detector is fixedly installed with a buzzer and a warning light, and the buzzer and the warning light are in communication connection with the PLC controller.

[0024] The beneficial effect of the further scheme is simple structure, reasonable design, and alarm of the buzzer and the warning light when the detector detects the natural gas.

[0025] Further, the detector is further fixedly installed with a reset button, and the reset button is in communication connection with the PLC controller.

[0026] The beneficial effect of the further scheme is simple structure, reasonable design, and reset of the detector by the reset button. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an assembly drawing during detection of the utility model;

[0028] Figure 2 It is a whole structure schematic view of the limiting component in the utility model;

[0029] Figure 3 It is a partial structure schematic view of the limiting component in the utility model;

[0030] Figure 4It is the whole structure schematic view of the detection assembly in the utility model.

[0031] Figure 5 It is the partial structure schematic view of the detection assembly in the utility model.

[0032] In the drawings, the component list represented by each sign is as follows:

[0033] 1, natural gas pipeline; 2, limiting assembly; 21, fixed plate; 22, driving piece; 221, translational force piece; 222, driving block; 223, limiting block; 224, sliding block; 23, driving ring one; 24, rotary rod; 25, driving ring two; 26, sealing plate one; 27, sealing plate two; 28, fixed ring one; 29, fixed ring two; 3, detection assembly; 31, detector; 32, fixed piece; 321, fixed groove; 322, positioning ring; 323, bolt; 33, air suction hole; 34, buzzer; 35, warning light; 36, reset button. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0036] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] The utility model discloses below will refer to the drawing and combine the embodiment to explain in detail.

[0038] Embodiment 1

[0039] As Figures 1 to 5 The utility model provides a leak early warning device for natural gas pipeline transportation, including restriction component 2, detection component 3 and PLC controller, restriction component 2 includes driver and respectively half circular sealing plate no. 26 and sealing plate no. 27, sealing plate no. 26 with sealing plate no. 27 are set up opposite vertically, and its respectively sealing plate no. 26 and sealing plate no. 27 are driven to run to each other parallel to seal or open natural gas pipeline 1 with driver transmission connection, driver with detection component 3 are used to install in natural gas pipeline 1 respectively, with PLC controller communication connection respectively.

[0040] When using, after installing the whole device in place, starting detection component 3, when detecting that natural gas pipeline 1 has natural gas leakage, corresponding signal is sent to PLC controller, and PLC controller receives corresponding signal and controls driver operation, and driver drives sealing plate no. 26 and sealing plate no. 27 to run to each other parallel to seal or open natural gas pipeline 1, prevents natural gas excessive leakage, and safe production.

[0041] The utility model discloses simple structure, reasonable in design, and the front pipeline of the leak point detected is sealed through restriction component, and it is convenient for staff to overhaul and will not cause the influence to the normal life of people, and the pipeline and its external environment are monitored in real time through detection component, and it is convenient to determine the leak point, and it is convenient for staff to maintain, and is used to solve the above -mentioned problem.

[0042] Embodiment 2

[0043] On the basis of embodiment 1, in the utility model, the driver includes driving piece 22, rotating rod 24, driving ring no. 1 23 and driving ring no. 2 25, rotating rod 24 is set up vertically, sealing plate no. 2 27 is fixedly connected with rotating rod 24, driving ring no. 1 23 is fixedly sleeved on the upper end of rotating rod 24, driving ring no. 2 25 is rotatably sleeved on rotating rod 24 and is fixedly connected with sealing plate no. 1 26, and driving piece 22 is transmission connection with rotating rod 24.

[0044] The scheme is simple in structure, reasonable in design, and the rotating rod 24 is rotated by the driving ring no. 1 23 and the driving ring no. 2 25 of driving piece, and the sealing plate no. 1 26 and the sealing plate no. 2 27 are driven by the rotating rod 24 to run to seal or open natural gas pipeline 1.

[0045] Preferably, in the utility model, the above rotating rod 24 is preferably a cylindrical rod.

[0046] Preferably, in the embodiment, the driving ring 23 is preferably a circular ring.

[0047] Embodiment 3

[0048] On the basis of embodiment 2, in the embodiment, three fixed rings two 29 are uniformly and spacedly sleeved on the rotating rod 24 from top to bottom, the three fixed rings two 29 are respectively fixedly connected with the sealing plate one 26, and the uppermost fixed ring two 29 is fixedly connected with the driving ring two 25; two fixed rings one 28 are also uniformly and spacedly fixedly sleeved on the rotating rod 24 from top to bottom, and the two fixed rings one 28 are respectively and alternately spacedly distributed with the three fixed rings two 29, and are respectively fixedly connected with the sealing plate two 27.

[0049] The scheme has simple structure and reasonable design, the sealing plate one 26 is connected with the rotating rod 24 by the three fixed rings two 29, and the sealing plate two 27 is connected with the rotating rod 24 by the two fixed rings one 28, so as to drive the sealing plate one 26 and the sealing plate two 27 to run by the rotating rod 24.

[0050] Preferably, in the embodiment, the driving ring two 25 is preferably a cylindrical structure with a thick upper end and a thin lower end.

[0051] Embodiment 4

[0052] On the basis of any one of embodiment 2 to embodiment 3, in the embodiment, the driving member 22 comprises a fixed plate 21, a horizontal moving force member 221 and a sliding block 224, the fixed plate 21 is horizontally fixedly arranged, and the sliding block 224 is horizontally installed in the fixed plate 21; the horizontal moving force member 221 is connected with the sliding block 224, is in communication connection with the PLC controller, and is used for driving the sliding block 224 to horizontally move; and the driving ring one 23 is connected with the sliding block 224.

[0053] In use, the horizontal moving force member 221 drives the sliding block 224 to move, and the sliding block 224 drives the rotating rod 24 to rotate by the driving ring one 23.

[0054] Preferably, in the embodiment, the fixed plate 21 is preferably a U-shaped frame structure.

[0055] Preferably, in the embodiment, the horizontal moving force member 221 is preferably an electric telescopic rod.

[0056] Embodiment 5

[0057] On the basis of embodiment 4, in the embodiment, the horizontal moving force member 221 is connected with the sliding block 224 through a driving block 222.

[0058] The scheme has simple structure and reasonable design, and the horizontal moving force member 221 drives the sliding block 224 to slide on the fixed plate 21 by the driving block.

[0059] Preferably, two opposite sides of the fixed plate 21 are provided with guide rails, and two opposite sides of the sliding block 224 are slidably connected to the guide rails through guide rods.

[0060] During assembly, the fixed plate 21 is fixed on the natural gas pipeline 1, the lower end of the rotating rod 24 extends into the natural gas pipeline 1, and the sealing plate one 26 and the sealing plate two 27 are located in the natural gas pipeline 1. During use, the sliding block 224 pushes the driving ring one 23 to operate, and the driving ring one 23 drives the rotating rod 24 to rotate due to the obstruction of the natural gas pipeline 1 to the rotating rod 24.

[0061] Embodiment 6

[0062] On the basis of any one of Embodiments 4 to 5, in the present embodiment, the sliding block 224 is in a U-shaped block structure, the closed end of which is connected to the horizontal moving force 221; two limiting blocks 223 are horizontally and oppositely fixedly installed in the sliding block 224, and the two limiting blocks 223 are connected to the driving ring one 23.

[0063] This scheme has simple structure, reasonable design of the shape of the sliding block 224, and can drive the driving ring one 23 and the rotating rod 24 to operate by using the two limiting blocks 223.

[0064] Embodiment 7

[0065] On the basis of the above-mentioned embodiments, in the present embodiment, the detection assembly 3 comprises a detector 31 and a fixing member 32, the fixing member 32 is used for being fixed on the natural gas pipeline 1; the detector 31 is fixedly installed on the fixing member 32, and two rows of air suction holes 33 are oppositely arranged on the detector 31; the detector 31 is in communication connection with the PLC controller.

[0066] This scheme has simple structure and reasonable design, the detector 31 is fixed on the natural gas pipeline 1 by using the fixing member 32, and assembly is convenient; in addition, the PLC controller can receive signals sent by the detector 31 to control the operation of other components.

[0067] Preferably, in the present embodiment, the detector 31 adopts the prior art, and an independent power supply and a detection instrument are arranged in the detector 31, the detector 31 sucks external air into the detector 31 through the air suction holes 33 and monitors the external air of the natural gas pipeline 1 in real time.

[0068] Embodiment 8

[0069] In this embodiment based on embodiment 7, the fixing part 32 comprises a fixing groove 321 and two positioning rings 322, the two positioning rings 322 are oppositely arranged and are used for being sleeved outside the natural gas pipeline 1, and the two ends of the two positioning rings 322 are connected by bolts 323 respectively; the fixing groove 321 is fixedly installed on the upper ends of the two positioning rings 322, and the detector 31 is fixedly installed on the fixing groove 321.

[0070] The scheme has simple structure and reasonable design, the two positioning rings 322 tightly hold the natural gas pipeline 1, and the two ends of the two positioning rings 322 are connected by bolts 323 respectively, and the assembly is convenient.

[0071] Preferably, in this embodiment, the two positioning rings 322 are preferably half-ring structures, and the two ends of the two positioning rings 322 are oppositely and fixedly connected with connecting plates, and the two pairs of connecting plates are oppositely and provided with through holes, and the two bolts 323 are inserted into the two pairs of through holes.

[0072] Preferably, in this embodiment, the fixing groove 321 is preferably a flat plate structure.

[0073] Embodiment 9

[0074] In this embodiment based on any one of embodiment 7 to embodiment 8, the detector 31 is fixedly installed with a buzzer 34 and a warning light 35, and the buzzer 34 and the warning light 35 are in communication connection with the PLC controller.

[0075] The scheme has simple structure and reasonable design, and when the detector 31 detects natural gas, the buzzer 34 and the warning light 35 alarm.

[0076] Embodiment 10

[0077] In this embodiment based on any one of embodiment 7 to embodiment 9, the detector 31 is further fixedly installed with a reset button 36, and the reset button 36 is in communication connection with the PLC controller.

[0078] The scheme has simple structure and reasonable design, and the detector can be reset by using the reset button 36.

[0079] It should be noted that the reset button 36, the buzzer 34 and the warning light 35 are all existing technologies, and the specific structure and principle will not be described here.

[0080] The working principle of the utility model is as follows:

[0081] In use, after the whole device is installed in place, the detector 31 is started, when natural gas pipeline 1 is detected to have natural gas leakage, the warning light 35 is turned on, and the buzzer 34 is sounded, the driving force 221 is controlled to start through the PLC controller, the driving force 221 drives the driving block 222 to translate along the length direction of the fixed plate 21, the driving block 222 drives the sliding block 224 to move, the sliding block 224 further drives the limiting block 223 to move, the limiting block 223 drives the driving ring one 23 and the driving ring two 25 to move, the driving ring one 23 drives the rotating rod 24 to rotate with the axis as the center, the rotating rod 24 drives the fixed ring one 28 to rotate, further drives the sealing plate two 27 to move, the driving ring two 25 drives the fixed ring two 29 to rotate, the fixed ring two 29 drives the sealing plate one 26 to rotate, the sealing plate one 26 and the sealing plate two 27 seal the pipeline, and prevent excessive leakage of natural gas.

[0082] Compared with the prior art, the natural gas pipeline transportation leak warning device seals the front pipeline of the detected leakage point through the limiting assembly, is convenient for staff to overhaul and does not cause influence on normal life, and the pipeline and the external environment thereof are monitored in real time through the detection assembly, so that the leakage point is conveniently determined and the staff is conveniently maintained.

[0083] The utility model discloses a device for natural gas pipeline transportation leak warning device, improve the natural gas pipeline transportation leak warning device of prior art when using, the reflection time is longer, cannot reach the timely alarm of detection leakage, and its overhaul cannot plug the gas leakage point, need to break off the natural gas supply of whole pipeline problem.

[0084] It should be noted that all electronic components involved in the utility model are of prior art, and the above-mentioned components are electrically connected with the PLC controller, and the control circuit between the PLC controller and each component is of prior art.

[0085] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0086] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0087] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A leak forewarning device for natural gas pipeline transportation, characterized in that: The application relates to a natural gas pipeline sealing device, which comprises a limiting component (2), a detecting component (3) and a PLC controller, wherein the limiting component (2) comprises a driver and two sealing plates (26 and 27) in the shape of half circles, the two sealing plates (26 and 27) are vertically arranged oppositely and are respectively connected with the driver, the driver can drive the two sealing plates (26 and 27) to run to be parallel to each other so as to seal or open the natural gas pipeline (1), and the driver and the detecting component (3) are respectively arranged on the natural gas pipeline (1) and are respectively connected with the PLC controller.

2. The leak early warning device for natural gas pipeline transportation according to claim 1, characterized in that: The driver comprises a driving member (22), a rotating rod (24), a driving ring one (23) and a driving ring two (25), the rotating rod (24) is vertically arranged, the sealing plate two (27) is fixedly connected with the rotating rod (24), the driving ring one (23) is fixedly sleeved on the upper end of the rotating rod (24), the driving ring two (25) is rotatably sleeved on the rotating rod (24) and is fixedly connected with the sealing plate one (26), and the driving member (22) is in transmission connection with the rotating rod (24).

3. The leak early warning device for natural gas pipeline transportation according to claim 2, characterized in that: Three fixed rings two (29) are rotatably and uniformly spaced on the rotating rod (24) from top to bottom, the three fixed rings two (29) are respectively fixedly connected with the sealing plate one (26), and the uppermost fixed ring two (29) is fixedly connected with the driving ring two (25); two fixed rings one (28) are fixedly and uniformly spaced on the rotating rod (24) from top to bottom, the two fixed rings one (28) are alternately and spacedly arranged in sequence with the three fixed rings two (29), and the two fixed rings one (28) are respectively fixedly connected with the sealing plate two (27).

4. The leak early warning device for natural gas pipeline transportation according to claim 2, characterized in that: The driving member (22) comprises a fixed plate (21), a horizontal moving force member (221) and a sliding block (224), the fixed plate (21) is horizontally fixedly arranged, the sliding block (224) is horizontally arranged in the fixed plate (21), the horizontal moving force member (221) is connected with the sliding block (224) and is in communication connection with the PLC controller and is used for driving the sliding block (224) to move horizontally, and the driving ring one (23) is connected with the sliding block (224).

5. The leak early warning device for natural gas pipeline transportation according to claim 4, characterized in that: The horizontal moving force member (221) is connected with the sliding block (224) through a driving block (222).

6. The leak early warning device for natural gas pipeline transportation according to claim 4, characterized in that: The sliding block (224) is in the shape of a U-shaped block structure, the closed end of the sliding block (224) is connected with the horizontal moving force member (221), two limiting blocks (223) are horizontally and oppositely fixedly arranged in the sliding block (224), and the two limiting blocks (223) are connected with the driving ring one (23).

7. A leak detector for natural gas pipeline transportation according to any one of claims 1 to 6, characterized in that: The detecting component (3) comprises a detector (31) and a fixing member (32), the fixing member (32) is used for being fixed on the natural gas pipeline (1), the detector (31) is fixedly arranged on the fixing member (32) and is oppositely provided with two rows of air suction holes (33), and the detector (31) is in communication connection with the PLC controller.

8. The leak early warning device for natural gas pipeline transportation according to claim 7, characterized in that: The fixing part (32) comprises a fixing groove (321) and two positioning rings (322), the two positioning rings (322) are oppositely arranged and are used for being sleeved outside the natural gas pipeline (1), the two ends of the two positioning rings (322) are connected by bolts (323) respectively, and the fixing groove (321) is fixedly installed on the upper ends of the two positioning rings (322).

9. The leak early warning device for natural gas pipeline transportation according to claim 7, characterized in that: A buzzer (34) and a warning light (35) are fixedly installed on the detector (31) and are in communication connection with the PLC controller respectively.

10. The leak early warning device for natural gas pipeline transportation according to claim 7, characterized in that: A reset button (36) is also fixedly installed on the detector (31) and is in communication connection with the PLC controller.

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