Natural gas gathering and transportation pipeline valve switch safety device

Abstract

The utility model discloses a natural gas gathering and transportation pipeline valve opening and closing safety device which is arranged on a natural gas pipeline and comprises a valve structure and a valve closing structure. The valve structure comprises a valve body arranged on the natural gas pipeline, a valve ball arranged in the valve body and located in the natural gas pipeline and a valve bonnet arranged outside the valve body, and the valve closing structure comprises a driving device, a single-chip microcomputer controlling the driving device to act and a gas alarm connected with the single-chip microcomputer. The driving device is arranged in the valve bonnet and drives the valve ball to rotate until the valve is closed, the gas alarm transmits an alarm signal to the single chip microcomputer, and the single chip microcomputer controls the driving device to act to drive the valve ball to rotate until the valve is closed. The safety device can be used permanently, and can directly, automatically and conveniently close the valve of the gas inlet pipeline under the condition of gas leakage during compression of natural gas in a station, so that safety accidents caused by leakage are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipeline leakage safety, and more specifically, to a natural gas gathering and transmission pipeline valve switch safety device. Background Art

[0002] Currently, many natural gas projects use wellhead gas that undergoes dehydration, separation, and desulfurization before entering a compressor for compressed transmission. Natural gas pipelines can leak at the compressor's intake or within the compressor. Valves on natural gas pipelines are typically pneumatically operated for opening, but manually closed. This can lead to safety issues during field operations due to personnel negligence or a pipeline leak that prevents valve closing in time. Therefore, this application designs an automatic on / off valve that connects to a gas leak alarm within the compressor. Utility Model Content

[0003] One purpose of the utility model is to provide a natural gas gathering and transmission pipeline valve switch safety device, which is a safety device that can be used permanently. In the event of gas leakage during natural gas compression at the station, the air intake pipeline valve can be directly and automatically closed conveniently, thereby reducing the occurrence of safety accidents caused by leakage.

[0004] In order to solve the above technical problems, the utility model provides a natural gas gathering and transmission pipeline valve switch safety device, which is arranged on the natural gas pipeline and includes a valve structure and a valve closing structure. The valve structure includes a valve body arranged on the natural gas pipeline, a valve ball arranged in the valve body and located in the natural gas pipeline, and a valve cap arranged outside the valve body. The valve closing structure includes a driving device, a single-chip microcomputer for controlling the action of the driving device, and a gas alarm connected to the single-chip microcomputer. The driving device is arranged in the valve cap and drives the valve ball to rotate to close the valve. The gas alarm transmits the alarm signal to the single-chip microcomputer, which controls the action of the driving device through the single-chip microcomputer, driving the valve ball to rotate to close the valve.

[0005] Preferably, the driving device includes a forward and reverse motor and a driving gear, a driven gear and an internal gear located in the same plane, the driving gear is engaged with multiple driven gears on the periphery, and multiple driven gears are engaged with the inner ring of the internal gear, the output end of the forward and reverse motor is connected to the driving gear and drives it to rotate, the outer ring of the internal gear is connected to the valve ball through a support seat, and the central axes of the valve ball, the internal gear and the driving gear all coincide.

[0006] Preferably, the valve bonnet is a disc-like structure and comprises an upper and lower part, the lower part being a frame structure for accommodating the driving device, and the center of the driven gear is pivotally connected to the top surface of the upper part of the valve bonnet through a vertical axis.

[0007] Preferably, the support seat is composed of a truncated cone structure with a larger upper portion and a smaller lower portion, and a columnar structure.

[0008] Preferably, a bracket is provided on the valve body and is sleeved outside the valve cap, and the forward and reverse motor is fixedly provided on the bracket.

[0009] Preferably, the forward and reverse motors are connected to a single chip microcomputer in a compressor control cabinet via a connecting line, and the gas alarm is arranged in the compressor control cabinet.

[0010] The utility model has at least the following beneficial effects:

[0011] The utility model relates to a natural gas pipeline valve switch safety device, which is installed at the air inlet pipe of the compressor. Through the cooperation of the forward and reverse motor, the internal gear, the driving gear and the driven gear, the device realizes the function of automatically closing the valve. When the gas alarm of the compressor at the station detects a gas leak, the gas inlet valve is automatically closed in time, thereby reducing the occurrence of safety accidents caused by the leakage.

[0012] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front sectional view of the overall structure of the utility model;

[0014] Figure 2 This is the engagement diagram of the drive device of the present utility model.

[0015] Description of reference numerals:

[0016] 1 forward and reverse motor, 2 driving gear, 3 driven gear, 4 internal gear, 5 bracket, 6 natural gas pipeline, 7 valve body, 8 valve ball, 9 support seat, 10 valve cap. DETAILED DESCRIPTION

[0017] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below with reference to the accompanying drawings so that those skilled in the art can implement it according to the description.

[0018] It should be noted that, in the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figure 1 and Figure 2 As shown, the utility model provides a natural gas gathering and transmission pipeline valve switch safety device, which is arranged on a natural gas pipeline 6 and includes a valve structure and a valve closing structure. The valve structure includes a valve body 7 arranged on the natural gas pipeline, a valve ball 8 arranged in the valve body and located in the natural gas pipeline, and a valve cap 10 arranged outside the valve body. The valve closing structure includes a driving device, a single-chip microcomputer for controlling the action of the driving device, and a gas alarm connected to the single-chip microcomputer. The driving device is arranged in the valve cap and drives the valve ball to rotate to close the valve. The gas alarm transmits an alarm signal to the single-chip microcomputer, which controls the action of the driving device through the single-chip microcomputer, driving the valve ball to rotate to close the valve.

[0020] In another technical solution, the driving device includes a forward and reverse motor 1 and a driving gear 2, a driven gear 3 and an internal gear 4 located in the same plane. The driving gear is engaged with multiple driven gears on the periphery, and multiple driven gears are engaged with the inner ring of the internal gear. The output end of the forward and reverse motor is connected to the driving gear and drives it to rotate. The outer ring of the internal gear is connected to the valve ball through a support seat 9. The central axes of the valve ball, the internal gear and the driving gear all coincide.

[0021] In another technical solution, the valve bonnet is a disc-like structure consisting of two parts: an upper and lower portion. The lower portion is a frame structure that houses the drive mechanism. The center of the driven gear is pivotally connected to the top surface of the upper portion of the valve bonnet via a vertical axis, and an internal gear is located at the bottom of the valve bonnet. The disc-like shape of the valve bonnet reduces the required operating space compared to traditional valve handles.

[0022] In another technical solution, the support seat is composed of a truncated cone structure with a larger upper portion and a smaller lower portion, and a cylindrical structure. The top of the support seat is connected to the outer ring of the internal gear, and the bottom is connected to the valve ball. The support seat serves as a transition between the internal gear and the valve ball.

[0023] In another technical solution, a bracket 5 is provided on the valve body, which is sleeved outside the valve cap, and the forward and reverse motor is fixedly provided on the bracket.

[0024] In another technical solution, the forward and reverse motors are connected to a single-chip microcomputer in a compressor control cabinet via a connecting wire, and the gas alarm is installed in the compressor control cabinet. The forward and reverse motors are connected to the gas alarm in the control cabinet via a single-chip microcomputer, and the single-chip microcomputer model used is STC90C52.

[0025] The mounting device of the present application is installed on a natural gas intake pipe. A forward / reversing motor is mounted on a bracket and connected to a valve ball. The bracket is mounted on the valve body. A gas leak alarm within the compressor is connected to the forward / reversing motor via a single-chip microcomputer in the compressor control cabinet. A driving gear is connected to the output end of the forward / reversing motor. An internal gear meshes with the driving gear via a driven gear. A support seat is attached below the internal gear. The valve ball is connected to the support seat. The internal gear drives the support seat and valve ball to rotate, closing the valve.

[0026] When using a compressor to compress natural gas and using this equipment, the natural gas concentration detector in the compressor detects a gas leak, and the gas alarm inside the compressor sounds an alarm. The gas alarm transmits the signal to the single-chip microcomputer in the control cabinet, and after receiving feedback, it controls the forward and reverse motor of the drive device to rotate, so that the driving gear rotates. Figure 2 As shown, when the driving gear rotates, it can drive the driven gear. Through the transmission of the driven gear, the internal gear rotates. The internal gear is fixed on the support seat. The rotation of the support seat drives the valve ball to rotate, and the valve ball automatically closes, which can achieve the effect of automatically closing the valve.

[0027] It is understood that the present invention is described through some embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and implementation methods. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A natural gas gathering and transmission pipeline valve switch safety device, characterized in that: It is installed on a natural gas pipeline and includes a valve structure and a valve closing structure. The valve structure includes a valve body installed on the natural gas pipeline, a valve ball installed in the valve body and located in the natural gas pipeline, and a valve cap installed outside the valve body. The valve closing structure includes a drive device, a single-chip microcomputer that controls the operation of the drive device, and a gas alarm connected to the single-chip microcomputer. The drive device is installed in the valve cap and drives the valve ball to rotate to close the valve. The gas alarm transmits an alarm signal to the single-chip microcomputer, which controls the operation of the drive device through the single-chip microcomputer, driving the valve ball to rotate to close the valve. The driving device includes a forward and reverse motor and a driving gear, a driven gear and an internal gear located in the same plane. The driving gear is engaged with multiple driven gears on the outer periphery, and multiple driven gears are engaged with the inner ring of the internal gear. The output end of the forward and reverse motor is connected to the driving gear and drives it to rotate. The outer ring of the internal gear is connected to the valve ball through a support seat. The central axes of the valve ball, the internal gear and the driving gear all coincide.

2. The natural gas gathering and transmission pipeline valve switch safety device according to claim 1, characterized in that: The valve bonnet is a disc-like structure and comprises an upper and a lower part. The lower part is a frame structure for accommodating a driving device. The center of the driven gear is pivotally connected to the top surface of the upper part of the valve bonnet through a vertical axis.

3. The natural gas gathering and transmission pipeline valve switch safety device according to claim 1, characterized in that: The support seat is composed of a truncated cone structure with a larger upper portion and a smaller lower portion and a columnar structure.

4. The natural gas gathering and transmission pipeline valve switch safety device according to claim 1, characterized in that: The valve body is provided with a bracket which is sleeved on the outside of the valve cap, and the forward and reverse motor is fixedly provided on the bracket.

5. The natural gas gathering and transmission pipeline valve switch safety device according to claim 1, characterized in that: The forward and reverse motors are connected to the single chip microcomputer in the compressor control cabinet via connecting wires, and the gas alarm is arranged in the compressor control cabinet.

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