Isolation device in natural gas pipe

Abstract

The utility model discloses a natural gas in-pipe isolating device which comprises a fixing shell, the fixing shell is tubular and used for being fixedly connected to the inner wall of a natural gas pipeline, a conveying pipeline is arranged in the fixing shell, a plurality of connecting frames connected with the fixing shell are fixedly connected to the outer wall of the conveying pipeline, and the connecting frames are used for supporting the conveying pipeline. The structure transmission pipeline is provided with two adjustable flow knots which are symmetrically arranged front and back and used for controlling and isolating the flow in the natural gas pipeline. The adjustable flow structure comprises a first fixing ring fixedly connected to the conveying pipeline, and an inner gear is rotationally connected to the outer edge of the side, away from the conveying pipeline, of the first fixing ring. The utility model has the advantages that an adjustable flow structure is arranged, so that different flow requirements are met, accurate control is realized, and the defect that the traditional equipment can only be opened / closed is overcome. Meanwhile, remote control or automatic adjustment is achieved, manual intervention is reduced, and operation efficiency and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas equipment technical field, specifically point to a kind of natural gas pipe isolation device. BACKGROUND

[0002] With the wide application of natural gas in energy field, it is crucial to ensure the safety and efficiency of pipeline transportation. However, the existing pipeline isolation technology has problems such as complex operation and long response time. Therefore, it is particularly urgent to develop an efficient and flexible natural gas pipe isolation device. This device can quickly adjust or completely cut off the gas flow without stopping the gas, improving the ability of pipeline maintenance and emergency handling, and ensuring the stability and safety of the gas supply system.

[0003] Traditional natural gas pipeline isolation equipment mostly uses fixed valves or cutoff doors. These devices have certain limitations in flow regulation and isolation, and lack the ability to adjust flexibly. In addition, they usually need manual operation to open or close the valve, which not only consumes time but also may lead to inaccurate operation due to human factors.

[0004] The information disclosed in this background section is only intended to increase the understanding of the overall background of the utility model, and should not be considered as acknowledging or implying in any form that this information constitutes prior art known to those skilled in the art. SUMMARY

[0005] The technical problem to be solved by the utility model is to overcome the above problems and provide a natural gas pipe isolation device.

[0006] To solve the above technical problems, the utility model provides the technical scheme as follows: a natural gas pipe isolation device, comprising:

[0007] A fixed housing, which is tubular, is used to be fixedly connected to the inner wall of a natural gas pipeline;

[0008] A transmission pipeline, which is arranged in the fixed housing, has a plurality of connection racks fixedly connected to the fixed housing on its outer wall, for supporting the transmission pipeline;

[0009] Two adjustable flow structures, both of which are arranged on the transmission pipeline and symmetrically arranged in front and back with the transmission pipeline as the center, for controlling and isolating the flow in the natural gas pipeline.

[0010] As an improvement, the adjustable flow structure comprises a fixed ring I fixedly connected to the transmission pipeline, and an internal gear rotatably connected to the outer edge of the fixed ring I away from the transmission pipeline;

[0011] The inner gear is rotationally connected with a fixed ring two away from one side of the fixed ring one, and the fixed ring two is fixedly connected with a hollow butterfly disc away from one side of the inner gear, which is fixedly connected with the inner wall of the fixed shell to ensure the relative static of the fixed ring two.

[0012] As an improvement, a plurality of rotating shafts are rotationally connected with the fixed ring one, and half gears are fixedly connected with the outer wall of the rotating shafts and engaged with the inner gear.

[0013] Therefore, the non-tooth side of the half gear is fixedly connected with a baffle, the center of which forms a through hole with variable diameter through the interaction of a plurality of baffles, thereby achieving the purpose of flow control and isolation.

[0014] As an improvement, the plurality of baffles are placed in turn and overlap.

[0015] As an improvement, an outer tooth part is fixedly connected with any side of the inner gear, a transmission gear is engaged with the outer tooth part, and a servo motor is fixedly connected with the transmission gear to provide rotating power for the transmission gear.

[0016] As an improvement, a mobile power supply is fixedly connected with the outer wall of the transmission pipeline to provide power for the servo motor.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] In the utility model, the flow adjusting structure is provided. The flow adjusting structure can provide continuous flow adjustment, thereby adapting to different flow requirements, realizing precise control, and overcoming the deficiency that the traditional equipment can only be operated on / off. At the same time, remote control or automatic adjustment is realized, manual intervention is reduced, and operation efficiency and accuracy are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the perspective view of the utility model.

[0020] Figure 2 It is the structure view of the utility model.

[0021] Figure 3 It is the perspective view of part of the flow adjusting structure in the utility model.

[0022] Figure 4 It is the structure view of the flow adjusting structure in the utility model.

[0023] As shown in the figure: 1, fixed shell; 2, transmission pipeline; 3, connecting frame; 4, flow adjusting structure; 401, fixed ring one; 402, inner gear; 403, fixed ring two; 404, butterfly disc; 405, rotating shaft; 406, half gear; 407, baffle; 408, transmission gear; 409, servo motor. DETAILED DESCRIPTION

[0024] The utility model makes further detailed description in combination with the drawings.

[0025] The working principle of the utility model is shown in the figure. Figures 1-4 A natural gas pipe isolation device, comprising: a fixed shell 1, the fixed shell 1 is tubular structure, is made of stainless steel or other corrosion-resistant materials.The inner and outer diameter size of fixed shell 1 is determined according to the inner diameter of natural gas pipeline, to ensure that it can be firmly fixed on the inner wall of natural gas pipeline.Fixed shell 1 can be fixed with the inner wall of natural gas pipeline by welding, threaded connection or clamp and other ways.

[0026] Then, the transmission pipeline 2 is arranged in the fixed shell 1, the transmission pipeline 2 is also made of corrosion-resistant material, and a plurality of connecting frames 3 are uniformly distributed on the outer wall of the transmission pipeline 2.The connecting frame 3 is fixedly connected with the inner wall of the fixed shell 1 by bolts or other fasteners, so as to ensure that the transmission pipeline 2 is stably centered in the fixed shell 1.

[0027] Finally, adjustable flow structure 4 is arranged at the front and rear ends of the transmission pipeline 2, and the flow in the natural gas pipeline can be adjusted as needed through the adjustable flow structure 4, even completely cut off the airflow, so as to realize flexible flow control.

[0028] The above-mentioned various structures jointly constitute the general appearance structure of the natural gas pipe isolation device of the utility model.

[0029] In embodiment 1, the adjustable flow structure 4 comprises a fixed ring one 401 fixedly connected to the transmission pipeline 2, a ring gear 402 rotatably connected to the outer edge of the side of the fixed ring one 401 away from the transmission pipeline 2, a fixed ring two 403 rotatably connected to the side of the ring gear 402 away from the fixed ring one 401, a hollow butterfly disc 404 fixedly connected to the inner wall of the fixed shell 1, the butterfly disc 404 and the fixed ring two 403 are communicated, and the ring gear 402 can rotate relative to the fixed ring one 401 and the fixed ring two 403;

[0030] Natural gas can pass through the butterfly disc 404, the fixed ring two 403, the ring gear 402 and the fixed ring one 401 in turn, and finally into the transmission pipeline 2;

[0031] In addition, a plurality of rotating shafts 405 are rotatably connected to the side of the fixed ring one 401 away from the transmission pipeline 2, and the other end of the rotating shaft 405 is rotatably connected to the fixed ring two 403.It should be pointed out that the plurality of rotating shafts 405 are located in the ring gear 402, and the rotating shafts 405 are annular and uniformly arranged at intervals.

[0032] The outer wall of each rotating shaft 405 is fixedly connected with a half gear 406, the half gear 406 is engaged with the inner gear 402, and the non-tooth part of the half gear 406 away from the inner gear 402 is fixedly connected with a shielding plate 407;

[0033] It should be noted that the shielding plates 407 are made of materials with sufficient strength, and the shielding plates 407 are placed in sequence and overlap to reduce gas leakage. The shielding plates 407 are in the shape of a circular arc. Through the interaction of the shielding plates 407, a through hole with a variable diameter is formed at the center of the shielding plates 407, thereby achieving the purpose of flow control and isolation.

[0034] The outer wall of the inner gear 402 is fixedly connected with an outer tooth part on any side, the outer tooth part is engaged with a transmission gear 408, the transmission gear 408 is fixedly connected with a servo motor 409 that provides rotating power for the transmission gear 408, the transmission gear 408 is driven to rotate by the servo motor 409, thereby indirectly driving the plurality of shielding plates 407 to rotate. The servo motor 409 is fixedly connected to the outer wall of the transmission pipeline 2 through the motor base.

[0035] The outer wall of the transmission pipeline 2 is fixedly connected with a mobile power supply that provides power for the servo motor 409, and the mobile power supply and the servo motor 409 are electrically connected.

[0036] It should be noted that the servo motor 409 and the mobile power supply are both explosion-proof designs. These components follow strict explosion-proof standards to ensure safe operation in natural gas pipeline environments where flammable and explosive gases may exist.

[0037] Specifically, the servo motor 409 is explosion-proof, and this motor can work stably in a dangerous environment without producing electric sparks that may cause explosions. At the same time, the mobile power supply is also a specially designed explosion-proof power supply that can provide stable power supply for the servo motor 409 while maintaining the safety of the circuit.

[0038] It should be noted that the servo motor 409 is arranged to only drive the transmission gear 408 to rotate on the outer tooth part, and the engagement between the transmission gear 408 and the outer tooth part will not be disengaged.

[0039] The technical effects achieved by the technical features are as follows: after the servo motor 409 is activated, the rotating power is transmitted to the inner gear 402 through the precise meshing of the transmission gear 408 and the outer gear part. With the rotation of the inner gear 402, the half gear 406 cooperating with the inner gear 402 also acts, thereby driving the corresponding shielding plate 407 to rotate. The coordinated rotation of the shielding plates 407 causes the diameter of the through hole formed at the center of the shielding plates 407 to be gradually adjusted, thereby realizing accurate control of the natural gas flow. When the shielding plate 407 rotates to the designed limit position, the central through hole is completely closed, at which time the natural gas flow is completely blocked, achieving the effect of completely blocking the gas flow.

[0040] In the specific steps of implementing the device, first, the entire device is installed inside the natural gas pipeline to ensure that the fixed shell 1 is tightly fixed to the inner wall of the pipeline. In this way, when natural gas flows in, it first enters the space surrounded by the fixed shell 1. Then, the natural gas flows through the adjustable flow structure 4 in the front part, the transmission pipeline 2 in the middle part, and finally flows out through the adjustable flow structure 4 in the rear part.

[0041] During the entire flow process, according to actual environmental conditions and operation requirements, the flow size of the natural gas flowing through can be flexibly adjusted by operating the adjustable flow structure 4. When necessary, this structure can also be completely closed to achieve complete blocking of the flow, ensuring the safety and control efficiency of the pipeline system.

[0042] The above describes the present application and its embodiments, which are not limited. The embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by this, without departing from the spirit of the present application, similar structural forms and embodiments can be designed without creative design, which should belong to the protection scope of the present application.

[0043] In addition, the host computer can be a conventional known device such as a computer, and the detailed description of known functions and known components is omitted in the specific embodiments of the present disclosure. To ensure the compatibility of the device, the operation means used are consistent with the parameters of the market instruments.

Claims

1. An in-line natural gas isolation device, comprising: Include: Fixed shell (1), the fixed shell (1) is tubular, for fixedly connected on the inner wall of natural gas pipeline; Transmission pipeline (2), the transmission pipeline (2) is arranged in the fixed shell (1), the outer wall of the transmission pipeline (2) is fixedly connected with several connecting frames (3) connected with the fixed shell (1), for supporting the transmission pipeline (2); Two adjustable flow structures (4), two said adjustable flow structures (4) are arranged on the transmission pipeline (2) and are symmetrically arranged in front and back with the transmission pipeline (2) as the center, for controlling and isolating the flow in the natural gas pipeline.

2. An in-line natural gas isolation device according to claim 1, wherein: The adjustable flow structure (4) includes a fixed ring (401) fixedly connected to the transmission pipeline (2), and an inner gear (402) rotatably connected to the outer edge of the side away from the transmission pipeline (2) of the fixed ring (401); The inner gear (402) is rotatably connected with a fixed ring (403) away from the fixed ring (401), and the fixed ring (403) is fixedly connected with a hollow butterfly disc (404) away from the inner gear (402), which is fixedly connected to the inner wall of the fixed shell (1), so that the relative static of the fixed ring (403) is ensured.

3. An in-line natural gas isolation device according to claim 2, wherein: The fixed ring (401) is rotatably connected with a plurality of rotating shafts (405), and the outer wall of the rotating shaft (405) is fixedly connected with a half gear (406) engaged with the inner gear (402); The non-tooth side of the half gear (406) is fixedly connected with a baffle (407), and the center of the plurality of baffles (407) is formed into a through hole with variable diameter, so as to achieve the purpose of flow control and isolation.

4. A natural gas in-line isolating device according to claim 3, wherein: The plurality of baffles (407) are placed in turn.

5. A natural gas in-line isolating device as defined in claim 3, wherein: The outer tooth part is fixedly connected to any side of the inner gear (402), the outer tooth part is engaged with a transmission gear (408), and the transmission gear (408) is fixedly connected with a servo motor (409) for providing rotating force.

6. An in-line natural gas isolation device according to claim 5, wherein: The outer wall of the transmission pipeline (2) is fixedly connected with a mobile power supply for providing power for the servo motor (409).

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