CN214947119U - High-pressure sealing flange - Google Patents

Abstract

The utility model discloses a high-pressure sealing flange, which belongs to the field of flanges and comprises a flange, a pipeline is inserted in the flange, two thread grooves are chiseled in the flange and are positioned at two sides of the pipeline, a screw rod is connected in the two thread grooves in a threaded manner, the lower end of the screw rod is connected with a screw cap in a threaded manner, the screw cap is positioned at the lower end of the flange, a cavity is chiseled in the flange and is communicated with the thread grooves, a fixed block is connected in the cavity in a sliding manner, a sealing block is fixedly connected at the outer end of the fixed block, a spring is arranged in the cavity and is fixedly connected with the sealing block, an extrusion plate is fixedly connected at the outer end of the spring and is connected with the cavity in a sliding manner, an air bag is arranged in the cavity and is fixedly connected with the extrusion plate, so that when the pressure of fluid in the pipeline is too high, the inner sealing ring can be adjusted in a telescopic manner according to the pressure, and the flange is not easy to loosen, and can remind the maintainer when pressure is too big.

Description

High-pressure sealing flange

Technical Field

The utility model relates to a flange field, more specifically say, relate to a high-pressure sealing flange.

Background

Flange, also called Flange or Flange, from english Flange, the basic meaning is that the protruding structure on the object, or the object with protruding structure, such as Flange bolt, Flange shaft, etc., because the Flange structure is commonly used for the connection between shaft and shaft, between pipe end and pipe end, or between equipment and equipment, the Flange generally refers to a part or structure for connection in the mechanical field, such as pipe Flange, reducer Flange, Flange connection refers to a mechanical connection mode that after gasket (ring) is filled between flanges, several bolts are used to tighten and seal, and is commonly used for the connection of pipe sections requiring frequent disassembly, such as steel pipe, cast iron pipe, plastic pipe, etc., and pipes with larger pipe diameter, more broadly speaking, where the connection is performed by means of Flange type structure at the periphery of two planes, and the connection part sealed at the same time is connected by bolts, generally referred to as "Flange for normal connection", for example, when the ventilation pipeline is connected, the part can be called as a flange part, the flange connection can realize that when the pressure intensity of fluid in the pipeline is overlarge, an internal sealing ring can be telescopically adjusted according to the pressure intensity, so that the flange is not easy to loosen, and a maintainer can be reminded of sealing connection under larger pressure when the pressure intensity is overlarge, so that the flange part is commonly used for connection between the pipeline and a pipe fitting; the flange connection can also realize that when the fluid pressure in the pipeline is too big, the inside sealing washer can stretch out and draw back and adjust according to the size of pressure, makes the difficult emergence of flange not hard up, and can remind driven function to the maintainer when pressure is too big, consequently also can be used to the connection of motor and reduction gear, or reduction gear and other equipment.

In the prior art, flanges are required to be connected at the pipeline joints, so that the joints are not easy to leak, but when the fluid pressure in the pipeline is too high, the flanges are loosened, so that the fluid leaks.

Disclosure of Invention

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a high-pressure sealing flange can realize when the fluid pressure in the pipeline is too big, and inside sealing washer can stretch out and draw back the regulation according to the size of pressure, makes the difficult emergence of flange not hard up, and can remind the maintainer when pressure is too big.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A high-pressure sealing flange comprises a flange, a pipeline is inserted in the flange, two thread grooves are formed in the flange, the thread grooves are located on two sides of the pipeline, a screw rod is connected to each thread groove in a threaded manner, a nut is connected to the lower end of the screw rod in a threaded manner, a cavity is formed in the flange and communicated with the thread grooves, a fixed block is connected to the outer end of the fixed block in a sliding manner, a sealing block is fixedly connected to the outer end of the fixed block, a spring is installed in the cavity and fixedly connected with the sealing block, an extrusion plate is fixedly connected to the outer end of the spring and slidably connected with the cavity, an air bag is installed in the cavity and fixedly connected with the extrusion plate, two air outlets are formed in the flange and communicated with the cavity, and the two air outlets are located on the outer side of the thread grooves, the rubber block is fixedly connected to the inner side of the cavity and located on the outer side of the air bag, when the pressure of fluid in the pipeline is too high, the inner sealing ring can be adjusted in a telescopic mode according to the pressure, the flange is not prone to loosening, and a maintainer can be reminded when the pressure is too high.

Furthermore, the outer end of the screw rod is inserted with a clamping rod, the clamping rod is located at the outer end of the flange, and after the screw rod is inserted in the flange, the upper end and the lower end of the screw rod can be clamped tightly through the clamping rod, so that the screw rod is not easy to loosen.

Furthermore, the limiting rings are arranged at the ends, close to each other, of the two fixing blocks and are fixedly connected with the cavity, when the pressure intensity applied to the fixing blocks is reduced, the fixing blocks can be restored to the original positions, and in order to keep the positions, corresponding to the original positions, of the fixing blocks unchanged, the positions, corresponding to the fixing blocks, of the fixing blocks can be limited by additionally arranging the limiting rings.

Further, install the mounting in the venthole, the mounting is located the upside of gasbag, and when the gasbag did not receive the extrusion, the accessible mounting was isolated in external and the cavity, made other external materials flow in and produce wearing and tearing to the gasbag.

Furthermore, a glass body is arranged in the air outlet hole, red powder is filled in the glass body, the glass body is located at the upper end of the sealing piece, when the air bag is broken due to overlarge pressure, the glass body can be lifted upwards through airflow generated by breaking, and is in contact with the screw rod and broken, so that attention of a maintenance worker is reminded.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme can realize when fluid pressure is too big in the pipeline, and inside sealing washer can stretch out and draw back the regulation according to the size of pressure, makes the difficult emergence of flange not hard up, and can remind the maintainer when pressure is too big.

(2) The outer end of the screw rod is inserted with the clamping rod, the clamping rod is located at the outer end of the flange, and after the screw rod is inserted into the flange, the upper end and the lower end of the screw rod can be clamped through the clamping rod, so that the screw rod is not easy to loosen.

(3) The limiting rings are installed at the ends, close to each other, of the two fixing blocks and are fixedly connected with the cavity, when the pressure intensity received by the fixing blocks is reduced, the fixing blocks can be restored to the original positions, and in order to enable the positions, when the fixing blocks are restored, of the fixing blocks to be unchanged, the positions, restored by the aid of the limiting rings, of the fixing blocks can be limited.

(4) Install the mounting in the venthole, the mounting is located the upside of gasbag, and when the gasbag did not receive the extrusion, the accessible mounting was isolated in external and the cavity, made external other material flow in produce wearing and tearing to the gasbag.

(5) Install the vitreous body in the outlet port, vitreous body intussuseption is filled with red powder, and the vitreous body is located the upper end of mounting, receives the too big emergence of pressure when breaking at the gasbag, and the accessible breaks the air current that produces and makes the vitreous body upwards rise, takes place to contact and breakage with the screw rod to this reaches the attention of reminding the maintainer.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

The reference numbers in the figures illustrate:

1 flange, 2 pipelines, 3 thread grooves, 4 screws, 401 clamping rods, 5 nuts, 6 cavities, 7 fixing blocks, 701 limiting rings, 8 sealing blocks, 9 springs, 10 extrusion plates, 11 air bags, 12 air outlet holes, 1201 sealing sheets, 1202 glass bodies and 13 rubber blocks.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-3, a high pressure sealing flange comprises a flange 1, a pipeline 2 is inserted into the flange 1, two thread grooves 3 are drilled in the flange 1, the thread grooves 3 are positioned at two sides of the pipeline 2, a screw rod 4 is connected in each of the two thread grooves 3 in a threaded manner, a nut 5 is connected at the lower end of the screw rod 4 in a threaded manner, the nut 5 is positioned at the lower end of the flange 1, a cavity 6 is drilled in the flange 1, the cavity 6 is communicated with the thread grooves 3, a fixing block 7 is connected in the cavity 6 in a sliding manner, a sealing block 8 is fixedly connected at the outer end of the fixing block 7, a spring 9 is arranged in the cavity 6, the spring 9 is fixedly connected with the sealing block 8, an extrusion plate 10 is fixedly connected at the outer end of the spring 9, the extrusion plate 10 is connected with the cavity 6 in a sliding manner, an air bag 11 is arranged in the cavity 6, the air bag 11 is fixedly connected with the extrusion plate 10, two air outlet holes 12 are drilled in the flange 1, the air outlet holes 12 are communicated with the cavity 6, two ventholes 12 are located the thread groove 3 outside, and fixedly connected with block rubber 13 in cavity 6, block rubber 13 are located the outside of gasbag 11, can realize when the fluid pressure of pipeline is too big, and inside sealing washer can stretch out and draw back the regulation according to the size of pressure, makes the difficult emergence of flange become flexible, and can remind the maintainer when pressure is too big.

Referring to fig. 2, a clamping rod 401 is inserted at the outer end of the screw rod 4, the clamping rod 401 is located at the outer end of the flange 1, after the screw rod 4 is inserted in the flange 1, the upper end and the lower end of the screw rod 4 can be clamped through the clamping rod 401, so that the screw rod 4 is not easy to loosen, a limiting ring 701 is installed at one end of each of the two fixing blocks 7 close to each other, the limiting ring 701 is fixedly connected with the cavity 6, when the pressure applied to the fixing block 7 is reduced, the fixing block can return to the original position, and in order to keep the position of the fixing block 7 when returning to the original position, the position of the fixing block 7 can be limited by additionally arranging the limiting ring 701.

Referring to fig. 3, a sealing plate 1201 is installed in the air outlet 12, the sealing plate 1201 is located on the upper side of the airbag 11, when the airbag 11 is not extruded, the outside is isolated from the cavity 6 by the sealing plate 1201, so that other substances outside flow into the airbag 11 to be abraded, a glass body 1202 is installed in the air outlet 12, red powder is filled in the glass body 1202, the glass body 1202 is located at the upper end of the sealing plate 1201, and when the airbag 11 is broken due to excessive pressure, the glass body 1202 is lifted upwards by airflow generated by breaking and is in contact with and broken by the screw rod 4, so that attention of a maintainer is reminded.

In the utility model, when the related technicians use the device, the screw rod 4 is firstly inserted into the thread groove 3 through the thread rotation, then the rubber block 13 is extruded to enhance the sealing performance, when the fluid pressure in the pipeline 2 is overlarge, the fixed block 7 is pushed backwards by extrusion, and in the process of gradually pushing backwards, the extrusion plate 10 extrudes the air bag 11, when the pressure is too high and reaches the limit of the bearing point, the air bag 11 is pressed to be broken, then the gas generated by the fracture ejects out of the glass body 1202 through the gas outlet hole 12, so that the glass body 1202 is broken after contacting with the screw rod 4, the powder in the glass body is scattered, compared with the prior art, the utility model discloses can realize when fluid pressure is too big in the pipeline, inside sealing washer can stretch out and draw back the regulation according to the size of pressure, makes the difficult emergence of flange not hard up, and can remind the maintainer when pressure is too big.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (5)

1. A high-pressure sealing flange, comprising a flange (1), characterized in that: pipeline (2) is inserted into flange (1), two thread grooves (3) are chiseled in flange (1), thread grooves (3) are located on two sides of pipeline (2), two equal threaded connection has screw rod (4) in thread grooves (3), lower end threaded connection has nut (5) under screw rod (4), nut (5) is located at the lower end of flange (1), cavity (6) is chiseled in flange (1), cavity (6) is communicated with thread grooves (3), sliding connection has fixed block (7) in cavity (6), fixed block (7) outer end fixedly connected with sealing block (8), install spring (9) in cavity (6), spring (9) and sealing block (8) fixed connection, spring (9) outer end fixedly connected with stripper plate (10), stripper plate (10) and cavity (6) sliding connection, the installation is by gasbag (11) in cavity (6), gasbag (11) and stripper plate (10) fixed connection, it has two ventholes (12) to open chisel in flange (1), venthole (12) are linked together with cavity (6), two venthole (12) are located thread groove (3) the outside, fixedly connected with block rubber (13) in cavity (6), block rubber (13) are located the outside of gasbag (11).

2. A high pressure sealing flange according to claim 1, wherein: and a clamping rod (401) is inserted at the outer end of the screw rod (4), and the clamping rod (401) is positioned at the outer end of the flange (1).

3. A high pressure sealing flange according to claim 1, wherein: two spacing ring (701) are all installed to the one end that fixed block (7) are close to each other, spacing ring (701) and cavity (6) fixed connection.

4. A high pressure sealing flange according to claim 1, wherein: a sealing sheet (1201) is arranged in the air outlet (12), and the sealing sheet (1201) is positioned on the upper side of the air bag (11).

5. A high pressure sealing flange according to claim 1, wherein: a glass body (1202) is installed in the air outlet hole (12), red powder is filled in the glass body (1202), and the glass body (1202) is located at the upper end of the sealing piece (1201).

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