CN219388925U - Pressure pipeline connecting flange - Google Patents

Abstract

The utility model discloses a pressure pipeline connecting flange, which belongs to the technical field of flanges and comprises a first flange plate and a second flange plate; when the first flange plate is connected with the second flange plate, the limiting ring is inserted between the fixing ring and the supporting ring, the pressing block inside the limiting ring is in contact with the first flange plate, the first flange plate and the second flange plate are continuously extruded, the telescopic rod is driven to be shortened after the pressing block is stressed, gas after the internal gas pressure of the telescopic rod is increased enters the outer gas gasket and the inner gas gasket through the two gas guide pipes respectively, the outer gas gasket and the inner gas gasket are expanded, the sealing ring on the outer gas gasket and the inner gas gasket is embedded into the sealing groove on the fixing ring and the supporting ring, sealing connection is carried out in an expansion extrusion mode, the sealing effect between the first flange plate and the second flange plate is greatly improved, the situation that a gap appears at the joint of the first flange plate and the second flange plate is prevented, and meanwhile, the use safety of the pressure pipeline and the flange is guaranteed.

Description

Pressure pipeline connecting flange

Technical Field

The utility model belongs to the technical field of flanges, and particularly relates to a pressure pipeline connecting flange.

Background

Flanges, also called flange collars or lugs, are parts of the shaft-to-shaft connection for connection between pipe ends, and also useful flanges on equipment inlets and outlets for connection between two pieces of equipment, such as speed reducer flanges. The flange connection or the flange joint refers to detachable connection which is formed by connecting a flange, a gasket and a bolt with each other to form a group of combined sealing structures.

In the interconnect of pressure pipeline, mostly be through ring flange with pipeline interconnect, but the ring flange that now generally uses is the pressure pipeline connection of direct through the bolt with both sides, and the pressure pipeline is easy to influence because of environment and pressure after the both sides fastening, makes the junction of flange appear the gap influence leakproofness, leads to external liquid and pipeline inside liquid to get into inside the flange, corrodes the flange, still can cause the leakage condition, influences the security that the flange used.

Disclosure of Invention

In order to overcome the defects, the utility model provides the pressure pipeline connecting flange, which solves the problems that after the two sides of the pressure pipeline are fastened, the sealing performance is affected by gaps at the joint of the flange, so that external liquid and liquid in the pipeline enter the flange to corrode the flange, leakage is caused, and the use safety of the flange is affected.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pipeline under pressure flange, includes flange first and flange second, a plurality of mounting hole has all been seted up outward to flange first and flange, one side fixedly connected with spacing ring of flange second, the embedded groove has been seted up in the spacing ring, the spacing ring is pegged graft between retainer plate and holding ring, retainer plate and holding ring all with one side fixed connection of flange first, be equipped with eight inflation extrusion subassembly in the embedded groove, eight inflation extrusion subassembly all communicate with outer gas cushion and interior gas cushion, outer gas cushion and interior gas cushion are fixed respectively at the outer wall and the inner wall of spacing ring.

As a further aspect of the utility model: the outer wall of outer gas packing ring and the inner wall of interior gas packing ring all are equipped with a plurality of sealing washer, a plurality of seal groove has all been seted up to the inner wall of retainer plate and the outer wall of holding ring, and the sealing washer embedding is in the seal groove.

As a further aspect of the utility model: six limiting blocks are arranged outside the limiting ring and are fixedly connected with the inner side of the second flange plate, six limiting grooves are formed in the outer wall of the fixing ring, and the limiting blocks are inserted into the limiting grooves.

As a further aspect of the utility model: the expansion extrusion assembly comprises a telescopic rod, the telescopic rod consists of a piston cylinder and a piston rod, the fixed end of the telescopic rod is fixedly connected with the bottom of the inner wall of the embedded groove, the telescopic end of the telescopic rod is fixedly connected with a pressing block, and the pressing block is overlapped with one side of the first flange plate.

As a further aspect of the utility model: the telescopic rod is sleeved with a spring, one end of the spring is fixedly connected with the pressing block, and the other end of the spring is fixedly connected with the fixed end of the telescopic rod.

As a further aspect of the utility model: the fixed end of telescopic link is connected with two air ducts, and the one end that two air ducts kept away from each other communicates with outer air cushion ring and interior air cushion ring respectively, the air duct runs through the spacing collar.

Compared with the prior art, the utility model has the beneficial effects that:

1. this pipeline under pressure flange, through with flange first and flange second when being connected, make the spacing collar peg graft between retainer plate and holding ring, and the inside briquetting of spacing collar and flange first contact, last extrusion flange first and flange second, then drive the telescopic link and shorten after the briquetting atress, the inside atmospheric pressure of telescopic link is after increasing then get into outer gas gasket and interior air cushion circle respectively through two air ducts in, make outer gas gasket and interior air cushion circle take place the inflation, make the sealing ring embedding on outer gas gasket and the interior air cushion circle in the seal groove on retainer plate and the holding ring, carry out sealing connection through inflation extrusion's mode, improve the sealed effect between flange first and the flange second greatly, prevent that the gap from appearing leaking the condition in its junction, guarantee the safety in utilization of pipeline under pressure and flange when playing the protection to the flange.

2. This pipeline under pressure flange carries out spacingly through retainer plate and backup ring to the spacing collar, guarantee that ring flange one is in concentric position with ring flange two, improve connection stability, when dismantling this flange, unscrew the bolt of installing in the mounting hole, break open ring flange one with the fingers and thumb the in-process of ring flange two, spacing girdle moves the telescopic link and keeps away from ring flange one, simultaneously support through the elasticity of spring, make the telescopic link extension, because the inside volume grow of telescopic link, the air duct can extract the gas in outer gas packing ring and the interior gas packing ring, make outer gas packing ring and interior gas packing ring resume the original form and break away from the seal groove on retainer plate and the backup ring, can take off ring flange two, the operation is very convenient, the equipment sealing work of convenient next time simultaneously.

3. This pipeline under pressure flange installs the stopper through the inboard at ring flange two, in the in-process of equipment ring flange one and ring flange two, the stopper can block into the spacing inslot, the stopper plays the purpose to ring flange two spacing, prevents to take place between ring flange one and the ring flange two to deflect and influence connection stability, because the telescopic link comprises piston cylinder and piston rod, makes the telescopic link guarantee its inside sealed effect at flexible in-process, and gaseous difficult excessive improves outer gas packing ring and interior air cushion ring collision sealed effect.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a first flange of the present utility model;

FIG. 4 is a schematic view of the structure of the expansion and extrusion assembly of the present utility model;

in the figure: 1. a first flange plate; 2. a second flange plate; 3. a mounting hole; 4. a limiting ring; 5. an embedding groove; 6. an outer air gasket; 7. an inner gas gasket; 8. an expansion and extrusion assembly; 801. a telescopic rod; 802. briquetting; 803. a spring; 804. an air duct; 9. a limiting block; 10. a limit groove; 11. a fixing ring; 12. and a support ring.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

As shown in fig. 1-4, the present utility model provides a technical solution: the utility model provides a pipeline under pressure flange, including ring flange 1 and ring flange 2, a plurality of mounting hole 3 have all been seted up to ring flange 1 and ring flange 2 outside, ring flange 2's one side fixedly connected with spacing collar 4, set up embedded groove 5 in the spacing collar 4, spacing collar 4 peg graft between retainer plate 11 and support ring 12, retainer plate 11 and support ring 12 all are connected with ring flange 1's one side fixed connection, carry out spacing to spacing collar 4 through retainer plate 11 and support ring 12, guarantee that ring flange 1 and ring flange 2 are in concentric position, improve connection stability;

eight expansion extrusion assemblies 8 are arranged in the embedded groove 5, the eight expansion extrusion assemblies 8 are communicated with the outer air cushion ring 6 and the inner air cushion ring 7, the expansion extrusion assemblies 8 comprise telescopic rods 801, the telescopic rods 801 are composed of piston cylinders and piston rods, fixed ends of the telescopic rods 801 are fixedly connected with bottoms of the inner walls of the embedded groove 5, pressing blocks 802 are fixedly connected with telescopic ends of the telescopic rods 801, the pressing blocks 802 are lapped with one side of the first flange plate 1, and the telescopic rods 801 are composed of the piston cylinders and the piston rods, so that the sealing effect of the inner parts of the telescopic rods 801 is guaranteed in the telescopic process, gas is not easy to overflow, and the collision sealing effect of the outer air cushion ring 6 and the inner air cushion ring 7 is improved;

the telescopic rod 801 is sleeved with the spring 803, one end of the spring 803 is fixedly connected with the pressing block 802, the other end of the spring 803 is fixedly connected with the fixed end of the telescopic rod 801, the telescopic rod 801 is stretched by the elastic force of the spring 803, and the air duct 804 can extract air in the outer air cushion ring 6 and the inner air cushion ring 7 to restore the original state and separate from sealing grooves on the fixed ring 11 and the supporting ring 12 so as to facilitate the separation of the first flange plate 1 and the second flange plate 2 due to the fact that the inner volume of the telescopic rod 801 is enlarged;

the fixed end of the telescopic rod 801 is connected with two air guide pipes 804, and one ends of the two air guide pipes 804, which are far away from each other, are respectively communicated with the outer air cushion ring 6 and the inner air cushion ring 7, and the air guide pipes 804 penetrate through the limiting ring 4;

the outer air cushion ring 6 and the inner air cushion ring 7 are respectively fixed on the outer wall and the inner wall of the limiting ring 4, a plurality of sealing rings are respectively arranged on the outer wall of the outer air cushion ring 6 and the inner wall of the inner air cushion ring 7, a plurality of sealing grooves are respectively arranged on the inner wall of the fixed ring 11 and the outer wall of the supporting ring 12, the sealing rings are embedded into the sealing grooves, and the sealing rings on the outer air cushion ring 6 and the inner air cushion ring 7 are embedded into the sealing grooves on the fixed ring 11 and the supporting ring 12 through expansion extrusion, so that the sealing effect between the first flange plate 1 and the second flange plate 2 is greatly improved.

Six limiting blocks 9 are arranged outside the limiting ring 4, the six limiting blocks 9 are fixedly connected with the inner side of the flange plate II 2, six limiting grooves 10 are formed in the outer wall of the fixing ring 11, the limiting blocks 9 are inserted into the limiting grooves 10, and the limiting blocks 9 can be clamped into the limiting grooves 10 in the process of assembling the flange plate I1 and the flange plate II 2 by mutually matching the limiting blocks 9 with the limiting grooves 10, so that the limiting blocks 9 play a role in limiting the flange plate II 2, and the connection stability is prevented from being influenced by deflection between the flange plate I1 and the flange plate II 2.

The working principle of the utility model is as follows:

when the air cushion is used, the limiting ring 4 is inserted between the fixed ring 11 and the supporting ring 12, the pressing block 802 in the limiting ring 4 is in contact with the first flange plate 1 and continuously extrudes the first flange plate 1 and the second flange plate 2, the pressing block 802 drives the telescopic rod 801 to shorten after being stressed, and air in the telescopic rod 801 after the air pressure is increased enters the outer air cushion ring 6 and the inner air cushion ring 7 through the two air guide pipes 804 respectively, so that the outer air cushion ring 6 and the inner air cushion ring 7 expand, the sealing rings on the outer air cushion ring 6 and the inner air cushion ring 7 are embedded into the sealing grooves on the fixed ring 11 and the supporting ring 12, and then the sealing rings are respectively inserted into the six mounting holes 3 through six bolts to be fixed;

when dismantling this flange, unscrew the bolt of installing in the mounting hole 3, break open flange 1 and flange 2's in-process off with the fingers and thumb, stop collar 4 drives telescopic link 801 and keeps away from flange 1, simultaneously through the elasticity support of spring 803, make telescopic link 801 extension, because telescopic link 801 internal volume grow, air duct 804 can extract the gas in outer air cushion circle 6 and the interior air cushion circle 7, make outer air cushion circle 6 and interior air cushion circle 7 resume the original state and break away from the seal groove on retainer plate 11 and the backup ring 12, can take off flange 2.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of one of ordinary skill in the art.

Claims (6)

1. The utility model provides a pipeline under pressure flange, includes ring flange one (1) and ring flange two (2), its characterized in that: a plurality of mounting holes (3) are formed in the outer sides of the first flange plate (1) and the second flange plate (2), a limiting ring (4) is fixedly connected to one side of the second flange plate (2), an embedded groove (5) is formed in the limiting ring (4), the limiting ring (4) is inserted between a fixing ring (11) and a supporting ring (12), the fixing ring (11) and the supporting ring (12) are fixedly connected with one side of the first flange plate (1), eight expansion extrusion assemblies (8) are arranged in the embedded groove (5), the eight expansion extrusion assemblies (8) are communicated with an outer air gasket (6) and an inner air gasket (7), and the outer air gasket (6) and the inner air gasket (7) are respectively fixed on the outer wall and the inner wall of the limiting ring (4).

2. A pressure pipe connection flange according to claim 1, wherein: the outer wall of outer gas packing ring (6) and the inner wall of interior air packing ring (7) all are equipped with a plurality of sealing washer, a plurality of seal groove has all been seted up to the inner wall of retainer plate (11) and the outer wall of backup ring (12), and the sealing washer embedding is in the seal groove.

3. A pressure pipe connection flange according to claim 1, wherein: six limiting blocks (9) are arranged outside the limiting ring (4), the six limiting blocks (9) are fixedly connected with the inner side of the flange plate II (2), six limiting grooves (10) are formed in the outer wall of the fixing ring (11), and the limiting blocks (9) are inserted into the limiting grooves (10).

4. A pressure pipe connection flange according to claim 1, wherein: the expansion extrusion assembly (8) comprises a telescopic rod (801), the telescopic rod (801) consists of a piston cylinder and a piston rod, the fixed end of the telescopic rod (801) is fixedly connected with the bottom of the inner wall of the embedded groove (5), the telescopic end of the telescopic rod (801) is fixedly connected with a pressing block (802), and the pressing block (802) is overlapped with one side of the first flange plate (1).

5. A pressure pipe connection flange as defined in claim 4, wherein: the telescopic rod (801) is sleeved with a spring (803), one end of the spring (803) is fixedly connected with the pressing block (802), and the other end of the spring (803) is fixedly connected with the fixed end of the telescopic rod (801).

6. A pressure pipe connection flange as defined in claim 4, wherein: the fixed end of the telescopic rod (801) is connected with two air guide pipes (804), one ends, away from each other, of the two air guide pipes (804) are respectively communicated with the outer air gasket (6) and the inner air gasket (7), and the air guide pipes (804) penetrate through the limiting ring (4).