CN216112363U - Gas emergency cut-off valve convenient to installation - Google Patents

Abstract

The utility model relates to a gas emergency cut-off valve convenient to install, which comprises a main body mechanism, wherein the main body mechanism comprises a valve body, connectors arranged at two ends of the valve body and an opening and closing control assembly arranged at the upper end of the valve body, and telescopic flange mechanisms are arranged inside the connectors. The utility model enables the emergency cut-off valve to be directly butted with the telescopic flange connecting piece when the emergency cut-off valve is installed and connected with pipelines at two sides by arranging the telescopic connecting flange, greatly improves the installation efficiency, is particularly suitable for the lengthening and shortening of the interface distance caused by the expansion caused by heat and the contraction caused by cold of the pipeline, is provided with the fixing structure, prevents the valve body from greatly sliding on the telescopic pipe back and forth, and presses the serration plate on the surface of the serration groove by the internal air pressure after the internal air pressure of the pipeline is increased, thereby preventing the valve body from greatly vibrating and wearing the piston ring on the outer wall surface of the telescopic pipe.

Description

Gas emergency cut-off valve convenient to installation

Technical Field

The utility model belongs to the field of gas conveying, and particularly relates to a gas emergency cut-off valve convenient to install.

Background

The gas emergency cut-off valve is used for cutting off the source of upstream dangerous materials when equipment is in failure, corrosion damage and sealing failure and leakage occurs or is in emergency, so that the accident range is prevented from being enlarged, the influence of accidents is controlled, and the accident loss is reduced.

When the gas emergency cut-off valve is installed, the gas emergency cut-off valve is generally connected with pipelines at two sides through flanges, and a gap between the pipelines at two sides is possibly too large or too small, so that the flanges of the emergency cut-off valve and the pipeline flanges are difficult to butt.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a gas emergency shut-off valve which is simple in structure and reasonable in design and is convenient to install.

The utility model realizes the purpose through the following technical scheme:

the utility model provides a gas emergency cut-off valve convenient to installation, includes main part mechanism, main part mechanism includes the valve body, installs at the connector at the valve body both ends and installs the start-stop control subassembly in the valve body upper end, the inside of connector all is provided with flexible flange mechanism, and flexible flange mechanism includes that the flexible pipe of telescopic is used for preventing rotatory square stopper, the inside of flexible flange mechanism all is provided with a plurality of fixed establishment who are used for the automatic fixed valve body, and fixed establishment includes serration line board and serration line groove, and serration line board can closely laminate with serration line groove under atmospheric pressure when inside atmospheric pressure risees.

As a further optimization scheme of the utility model, a telescopic pipe and a square limiting block in the telescopic flange mechanism are respectively connected in a circular sliding groove and a square sliding groove which are arranged in a connector in a sliding manner, a flange connecting piece which is butted with a pipeline is arranged at the end part of the telescopic pipe, and a bolt hole for fixing a bolt, a sealing groove for sealing and a sealing ring are arranged on the surface of the flange connecting piece.

As a further optimization scheme of the utility model, the fixing mechanism comprises a square block and a square rod which are used for pushing the serration plate, a square groove and a square hole which are used for accommodating the square block and the square rod are respectively formed between the inner wall and the outer wall of the telescopic pipe which are positioned at the same position, two ends of the square rod are respectively fixedly connected with the serration plate and the square block, and the serration groove which is arranged corresponding to the serration plate is formed on the surface of the inner wall of the circular sliding groove.

As a further optimization scheme of the utility model, a piston ring for sealing is arranged on the contact surface between the outer wall surface of one end, close to the square limiting block, of the telescopic pipe and the circular sliding groove.

As a further optimization scheme of the utility model, an annular sealing gasket for sealing is arranged on the contact surface of the square block and the square groove, and the square block and the square rod can slide along the radial direction of the telescopic pipe in the corresponding grooves and can also slightly swing along the axial direction of the telescopic pipe.

The utility model has the beneficial effects that:

1) according to the utility model, by arranging the telescopic connecting flange, when the emergency cut-off valve is installed and connected with the pipelines at two sides, the emergency cut-off valve can be directly butted with the telescopic flange connecting piece, so that the installation efficiency is greatly improved, and the emergency cut-off valve is particularly suitable for lengthening and shortening the interface distance caused by expansion caused by heat and contraction caused by cold of the pipeline;

2) the valve body is prevented from sliding on the telescopic pipe back and forth to a large extent by arranging the fixing structure, when the air pressure in the pipeline rises, the serration plate is pressed on the surface of the serration groove by the internal air pressure, the square rod and the square hole can slide in a small extent, the serration plate is convenient to align with the serration groove, and the engaged valve body plays a fixing role, so that the valve body is prevented from vibrating greatly and wearing a piston ring on the outer wall surface of the telescopic pipe;

3) the utility model has simple structure, high stability, reasonable design and convenient realization.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the telescopic flange mechanism of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

Fig. 4 is a perspective view of the telescopic flange mechanism of the present invention.

In the figure: 1. a main body mechanism; 11. a valve body; 12. an opening and closing control component; 13. a connector; 14. a circular chute; 15. a square chute; 2. a telescopic flange mechanism; 21. a telescopic pipe; 22. a square limiting block; 23. a flange connection; 24. a sealing groove; 25. a seal ring; 26. bolt holes; 27. a piston ring; 3. a fixing mechanism; 31. a square groove; 32. a square hole; 33. a square block; 34. a square rod; 35. an annular seal; 36. fine-toothed plate; 37. fine tooth-line groove.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; in the description of the present invention, the meaning of "plurality" or "a plurality" is two or more unless otherwise specified.

Example 1

As shown in fig. 1-4, a gas emergency cut-off valve convenient to install comprises a main body mechanism 1, the main body mechanism 1 comprises a valve body 11, connectors 13 installed at two ends of the valve body 11 and an opening and closing control assembly 12 installed at the upper end of the valve body 11, the opening and closing control assembly 12 can be connected with a fire-fighting circuit, a pipeline can be automatically cut off in case of emergency, an automatic control part and a manual control part are arranged, telescopic flange mechanisms 2 are arranged inside the connectors 13, the telescopic flange mechanisms 2 comprise telescopic pipes 21 and square limit blocks 22 for preventing rotation, the telescopic flange mechanisms 2 can effectively butt-joint pipelines at two ends, when the installation space of the pipelines changes due to thermal expansion and cold contraction, the pipelines can still be effectively butted, a plurality of fixing mechanisms 3 for automatically fixing the valve body 11 are arranged inside the telescopic flange mechanisms 2, the fixing mechanisms 3 comprise fine toothed plates 36 and fine toothed grooves 37, when the internal air pressure rises, the serration plate 36 can be tightly attached to the serration groove 37 under the air pressure, the valve body 11 can be fixed by the internal air pressure after ventilation, and the valve body 11 cannot rotate and cannot slide greatly in the axial direction of the extension tube 21.

The telescopic pipe 21 and the square limiting block 22 in the telescopic flange mechanism 2 are respectively connected in the circular sliding groove 14 and the square sliding groove 15 which are arranged in the connecting head 13 in a sliding manner, the end part of the telescopic pipe 21 is provided with a flange connecting piece 23 which is butted with a pipeline, the surface of the flange connecting piece 23 is provided with a bolt hole 26 for bolt fixing, a sealing groove 24 and a sealing ring 25 for sealing, and the telescopic flange mechanism 2 needs to keep good air tightness and prevent gas leakage in the process of sliding and butting the pipeline.

Fixing mechanism 3 is including square piece 33 and the square pole 34 that is used for promoting serration plate 36, square recess 31 and quad slit 32 have been seted up respectively between the interior outer wall that flexible pipe 21 is located the same position and have been used for holding square piece 33 and square pole 34, square pole 34's both ends respectively with serration plate 36 and square piece 33 fixed connection, the inner wall surface at circular spout 14 is seted up with serration plate 36 correspondence set up's serration groove 37, fixing mechanism 3 makes serration plate 36 and serration groove 37 closely laminate under the inside gas atmospheric pressure of flexible pipe 21 promotes, prevent that valve body 11 from sliding by a wide margin, square stopper 22 can effectively prevent that valve body 11 from rotating simultaneously.

The outer wall surface of one end of the telescopic pipe 21 close to the square limiting block 22 and the contact surface of the round sliding chute 14 are provided with a piston ring 27 for sealing, so that the sealing effect is achieved.

The contact surface of the square block 33 and the square groove 31 is provided with an annular sealing gasket 35 for sealing, the square block 33 and the square rod 34 can slide along the radial direction of the extension tube 21 in the corresponding grooves and can slightly swing along the axial direction of the extension tube 21, the width of the square block 33 in each direction is larger than that of the square rod 34, the square block 33 and the square rod 34 can be sealed through the annular sealing gasket 35 after the internal air pressure rises, air leakage is prevented, meanwhile, the air pressure at the other end of the square rod 34 is normal atmospheric pressure, and the serration plate 36 can be pushed to be engaged with the serration groove 37 under the air pressure difference, wherein the square block 33 and the square rod 34 can slightly swing along the axial direction of the extension tube 21 so as to facilitate the engagement of the serration plate 36 and the serration groove 37.

The implementation mode is specifically as follows: when the valve body 11 is installed and connected, the telescopic flange mechanisms 2 at two ends are firstly stretched to enable the flange connecting piece 23 to be butted with a flange of a pipeline, a bolt penetrates through the bolt hole 26 to be fixed, after the air pressure in the pipeline rises, the air pressure pushes the square block 33 and the square rod 34 to slide along the radial direction of the telescopic pipe 21, the annular sealing gasket 35 is extruded on the surface of the square groove 31, meanwhile, the square rod 34 is driven to press the thin corrugated plate 36 on the surface of the thin corrugated groove 37, the square rod 34 and the square hole 32 can slide in a small range, the thin corrugated plate 36 is conveniently aligned with the thin corrugated groove 37, the valve body 11 is fixed after being occluded, the piston ring 27 on the surface of the outer wall of the telescopic pipe 21 is prevented from vibrating greatly, the installation efficiency of the valve body 11 can be effectively improved through the telescopic connecting structure, direct butt joint is convenient, and an automatic fixing structure is provided, the valve body 11 is prevented from sliding back and forth on the bellows 21 to a great extent.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (5)

1. The utility model provides a gas quick action emergency valve convenient to installation, includes main part mechanism (1), main part mechanism (1) includes valve body (11), installs connector (13) at valve body (11) both ends and installs opening and close control assembly (12) in valve body (11) upper end, its characterized in that: the inside of connector (13) all is provided with flexible flange mechanism (2), and flexible flange mechanism (2) include flexible pipe (21) of telescopic and be used for preventing rotatory square stopper (22), the inside of flexible flange mechanism (2) all is provided with a plurality of fixed establishment (3) that are used for automatic fixed valve body (11), and fixed establishment (3) include serration line board (36) and serration groove (37), and serration line board (36) can closely laminate with serration groove (37) under atmospheric pressure when inside atmospheric pressure rises.

2. A gas quick action emergency valve easy to install according to claim 1, wherein: flexible pipe (21) and square stopper (22) in flexible flange mechanism (2) are sliding connection respectively in offering circular spout (14) and square spout (15) in connector (13), the tip of flexible pipe (21) is provided with flange joint spare (23) with the pipeline butt joint to set up bolt hole (26) that are used for the bolt fastening and be used for sealed seal groove (24) and sealing washer (25) on the surface of flange joint spare (23).

3. An easy-to-install gas quick action emergency valve according to claim 1 or 2, wherein: fixed establishment (3) are including square piece (33) and square pole (34) that are used for promoting serration board (36), square recess (31) and quad slit (32) have been seted up respectively between the interior outer wall that flexible pipe (21) are located the same position and have been used for holding square piece (33) and square pole (34), the both ends of square pole (34) respectively with serration board (36) and square piece (33) fixed connection, set up the inner wall surface at circular spout (14) with serration board (36) correspondence serration groove (37) that set up.

4. A gas quick action emergency valve easy to install according to claim 2, wherein: and a piston ring (27) for sealing is arranged on the contact surface between the outer wall surface of one end of the telescopic pipe (21) close to the square limiting block (22) and the circular sliding groove (14).

5. A gas quick action emergency valve easy to install according to claim 3, wherein: an annular sealing gasket (35) for sealing is arranged on the contact surface of the square block (33) and the square groove (31), and the square block (33) and the square rod (34) can slide along the radial direction of the telescopic pipe (21) in the corresponding grooves and can slightly swing along the axial direction of the telescopic pipe (21).

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