CN219912139U - High-pressure leakage early warning flange - Google Patents

Abstract

The utility model discloses a high-pressure leakage early warning flange, which belongs to the field of sealing structures of flanges, and comprises two sleeves and two clamping sleeves, wherein the two sleeves are sleeved on the two sleeves, and the two sleeves can be abutted by the two clamping sleeves; the sealing device also comprises two sealing rings, wherein one sealing ring is sealed at a channel position close to the two pipe sleeves, and the other sealing ring is sealed at a channel position far from the two pipe sleeves; and a sealing cavity is formed between the two sealing rings and the two pipe sleeves, one pipe sleeve is provided with an early warning channel, and the early warning channel is communicated with the sealing cavity. The utility model adopts the structure to ensure that the sealing failure can be early warned in time and the medium is prevented from leaking.

Description

High-pressure leakage early warning flange

Technical Field

The utility model relates to the field of sealing structures of flanges, in particular to a high-pressure leakage early warning flange.

Background

On pressure-bearing equipment such as boilers, pressure vessels, pressure pipelines and the like used in the fields of oil gas equipment, chemical equipment, food equipment, pharmaceutical equipment and the like, for high-pressure equipment (the pressure is more than or equal to 10 MPa), a high-pressure self-tightening flange is often used to ensure reliable sealing under the condition of high pressure. However, due to corrosion and scouring of the medium, the gasket of the high-pressure self-tightening flange is easy to be damaged, and the sealing effect is lost. Once the sealing fails, the high-pressure medium can be immediately discharged, and strong impact and pressure cause great potential safety hazards to surrounding equipment and personnel, and particularly the secondary disasters caused by leakage of toxic medium are difficult to dispose.

Aiming at the problems in the prior art, the utility model designs and manufactures the high-pressure leakage early warning flange to overcome the defects.

Disclosure of Invention

For the problems in the prior art, the high-pressure leakage early warning flange provided by the utility model can be used for timely early warning after sealing failure and ensuring that a medium does not leak.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the high-pressure leakage early warning flange comprises two sleeves and two clamping sleeves, wherein the clamping sleeves are sleeved on the sleeves, and the ends of the two sleeves can be abutted by the clamping sleeves;

the sealing device also comprises two sealing rings, wherein one sealing ring is sealed at a channel position close to the two pipe sleeves, and the other sealing ring is sealed at a channel position far from the two pipe sleeves;

and a sealing cavity is formed between the two sealing rings and the two pipe sleeves, one pipe sleeve is provided with an early warning channel, and the early warning channel is communicated with the sealing cavity.

Preferably, a sensor is arranged in the early warning channel.

Preferably, the sealing cavity comprises sealing grooves, the sealing grooves are symmetrically arranged on the two pipe sleeves, and the sealing grooves are communicated with the early warning channel.

Preferably, the sealing ring is a T-shaped structure formed by a clamping part and a sealing part, the clamping part is clamped between the two pipe sleeves, one sealing ring sealing part forms a seal with the inner walls of the channels of the two pipe sleeves, and the other sealing ring sealing part forms a seal with the side wall of the sealing groove far away from the channel direction.

Preferably, the inner walls of the two pipe sleeve channels corresponding to the sealing position of the sealing ring are inclined structures, and the two inclined structures form a sealing conical surface.

Preferably, the side walls of the sealing grooves of the two corresponding pipe sleeves at the sealing position of the sealing ring are inclined structures, and the two inclined structures also form a sealing conical surface.

Preferably, the sealing surface of the sealing ring is a taper surface matched with the sealing conical surface.

Preferably, the sealing part of the sealing ring is in interference fit with the sealing part.

Preferably, the outer side walls of the two pipe sleeves are respectively symmetrically provided with a boss;

the clamping sleeve is provided with two radian rings, two ends of each radian ring are respectively provided with a threaded hole, a bolt penetrates through each threaded hole to fixedly connect the two radian rings together so as to tightly clamp the two pipe sleeves, and the axis of the bolt is perpendicular to the axis of each pipe sleeve;

the bolts at the two ends of the radian ring are pre-tightened, so that the pre-tightening force of the bolts can be converted into axial force for tightly pressing the sealing ring and the pipe sleeve.

Preferably, the inner walls of the two radian rings are provided with circumferential grooves, and the two sides of each circumferential groove are provided with pre-tightening inclined planes;

the boss of two the pipe sleeve is located in the circumference recess, be equipped with the cooperation inclined plane on the boss and the cooperation of the pretension inclined plane of circumference recess, pretension radian ring both ends bolt makes circumference recess internal diameter reduce, and two pretension inclined planes extrusion boss make two pipe sleeves compress tightly the sealing ring.

The utility model has the advantages that:

1. according to the utility model, a double-sealing structure is adopted, after the sealing rings close to the channel are leaked, the sealing rings in the sealing grooves further prevent leakage, and the sealing cavity between the two sealing rings is connected with the sensor through the early warning channel, so that once a high-pressure medium leaks into the sealing cavity, early warning can be timely carried out, an operator is reminded to replace the primary sealing ring in time, and the leakage accident is avoided.

2. The sealing part of the sealing ring and the matching surface of the sealing part are conical surfaces, so that a self-tightening effect can be formed under the extrusion of a high-pressure medium, and the tightness is ensured.

Drawings

FIG. 1 is a cross-sectional view of a high pressure leak warning flange;

FIG. 2 is an enlarged view of a portion of the seal ring of the present utility model;

fig. 3 is a side view of a high pressure leak warning flange.

In the figure: 1-pipe sleeve, 2-cutting sleeve, 3-sealing ring, 4-sealing groove, 5-early warning channel, 6-sensor, 11-channel, 12-boss, 21-circumferential groove, 22-bolt.

Detailed Description

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

As shown in fig. 1 to 3, the high-pressure leakage early warning flange comprises a pipe sleeve 1 and a clamping sleeve 2, wherein the pipe sleeve 1 is provided with two clamping sleeves 2, the clamping sleeve 2 is sleeved on the pipe sleeve 1, and the clamping sleeve 2 can enable the end parts of the two pipe sleeves 1 to be close to each other. Specifically, boss 12 is symmetrically arranged on the outer side wall of two pipe sleeves 1 respectively, the clamping sleeve 2 is provided with two radian rings, threaded holes are respectively formed in two ends of each radian ring, a bolt 22 penetrates through the threaded holes to fixedly connect the two radian rings together so as to clamp the two pipe sleeves 1 tightly, the axis of the bolt 22 is perpendicular to the axis of the pipe sleeve 1, the bolts 22 at two ends of each radian ring are pre-tightened, and the pre-tightening force of the bolts 22 can be converted into axial force for compressing the sealing ring 3 and the pipe sleeve 1. Specifically, the inner walls of the two radian rings are provided with circumferential grooves 21, the two sides of the circumferential grooves 21 are provided with pre-tightening inclined planes, the bosses 12 of the two pipe sleeves 1 are located in the circumferential grooves 21, the bosses 12 are preferably provided with pre-tightening inclined planes matched with the circumferential grooves 21, the bolts 22 at the two ends of the pre-tightening radian rings reduce the inner diameters of the circumferential grooves, and the two pre-tightening inclined planes can squeeze the bosses 12 to enable the two pipe sleeves 1 to compress the sealing rings 3.

The utility model also comprises two sealing rings 3, wherein one sealing ring 3 is sealed at a position close to a channel 11 of the two pipe sleeves 1, the other sealing ring 3 is sealed at a position far away from the channel 11 of the two pipe sleeves 1, a sealing cavity is formed between the two sealing rings 3 and the two pipe sleeves 1, an early warning channel 5 is arranged on one pipe sleeve 1, the early warning channel 5 is communicated with the sealing cavity, and a sensor 6 is arranged in the early warning channel 5.

Adopt double containment structure, after the sealing ring 3 that is close to passageway 11 leaks, another sealing ring 3 can further prevent to leak, and the sealed chamber between two sealing rings 3 passes through early warning passageway 5 and connects sensor 6, and in the sealed chamber of once revealing entering, early warning that can be timely reminds operating personnel to in time change one-level sealing ring 3, stops the emergence of revealing the accident.

The sealing cavity specifically comprises sealing grooves 4, the sealing grooves 4 are symmetrically arranged on the two pipe sleeves 1, the sealing grooves 4 are communicated with the early warning channel 5, and the sealing grooves 4 are arranged to ensure that the sealing cavity has enough high-pressure medium containing space to leak, so that the sensor 6 can conveniently detect.

The sealing ring 3 of the utility model is formed by a clamping part and a sealing part, the cross section of the sealing ring is of a T-shaped structure, the clamping part is clamped between the two pipe sleeves 1, the sealing part of one sealing ring 3 forms a seal with the inner wall of a channel 11 of the two pipe sleeves 1, and the sealing part of the other sealing ring 3 forms a seal with the side wall of the sealing groove 4 in the direction away from the channel 11.

In order to further improve the sealing effect, the inner walls of the channels 11 of the two corresponding pipe sleeves 1 at the sealing position of the sealing ring 3 are preferably inclined structures, the two inclined structures form a sealing conical surface, the side walls of the sealing grooves 4 of the two corresponding pipe sleeves 1 at the sealing position of the sealing ring 3 are also inclined structures, the two inclined structures also form a sealing conical surface, the sealing surface of the sealing ring 3 is set to be matched with the conical surface, the sealing part of the sealing ring 3 is in interference fit with the sealing position, the interference magnitude of the interference fit position is consistent with the sealing conical surface, and the angle is preferably 10 degrees. The sealing part of the sealing ring 3 and the matching surface of the sealing part are conical surfaces, so that a self-tightening effect can be formed under the extrusion of a high-pressure medium, and the tightness is ensured.

Early warning process:

when the high-pressure medium leaks to the seal groove 4 after the seal ring 3 near the passage 11 leaks, the high-pressure medium is blocked in the other seal ring 3, and the leakage of the high-pressure medium is prevented.

In addition, because the sealing ring 3 close to the channel 11 is invalid, high-pressure medium can be transmitted to the pressure sensor 6 through the sealing groove 4 and the early warning channel 5, the pressure sensor 6 transmits pressure signals to the control center, an alarm sounds, an operator is reminded of timely replacing the sealing ring 3 close to the channel 11, and leakage accidents are avoided.

It should be understood that these examples are for the purpose of illustrating the utility model only and are not intended to limit the scope of the utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of the present utility model as defined in the appended claims.

Claims (10)

1. The high-pressure leakage early warning flange is characterized by comprising two sleeves and two clamping sleeves, wherein the clamping sleeves are sleeved on the sleeves, and the ends of the two sleeves can be abutted by the clamping sleeves;

the sealing device also comprises two sealing rings, wherein one sealing ring is sealed at a channel position close to the two pipe sleeves, and the other sealing ring is sealed at a channel position far from the two pipe sleeves;

and a sealing cavity is formed between the two sealing rings and the two pipe sleeves, one pipe sleeve is provided with an early warning channel, and the early warning channel is communicated with the sealing cavity.

2. The high pressure leakage warning flange of claim 1, wherein a sensor is provided in the warning channel.

3. The high pressure leakage warning flange of claim 1, wherein the seal cavity comprises a seal groove symmetrically arranged on two of the sleeves, the seal groove being in communication with the warning channel.

4. A high pressure leakage warning flange according to claim 3, wherein the sealing ring comprises a structure with a T-shaped cross section formed by a clamping part and a sealing part, the clamping part is clamped between two pipe sleeves, one sealing ring sealing part forms a seal with the inner walls of the two pipe sleeve channels, and the other sealing ring sealing part forms a seal with the side wall of the sealing groove away from the channel direction.

5. The high-pressure leakage early warning flange according to claim 3, wherein the inner walls of the two corresponding pipe sleeve channels at the sealing position of the sealing ring are inclined structures, and the two inclined structures form a sealing conical surface.

6. The high-pressure leakage early warning flange according to claim 5, wherein the side walls of the sealing grooves of the two corresponding sleeves at the sealing position of the sealing ring are inclined structures, and the two inclined structures also form sealing conical surfaces.

7. The high pressure leakage warning flange of claim 6, wherein the sealing ring sealing surface is configured as a tapered surface that mates with the sealing tapered surface.

8. The high pressure leakage warning flange of claim 7, wherein the sealing portion of the sealing ring is in an interference fit with the sealing portion.

9. The high-pressure leakage early warning flange according to claim 1, wherein bosses are symmetrically arranged on the outer side walls of the two sleeves respectively;

the clamping sleeve is provided with two radian rings, two ends of each radian ring are respectively provided with a threaded hole, a bolt penetrates through each threaded hole to fixedly connect the two radian rings together so as to tightly clamp the two pipe sleeves, and the axis of the bolt is perpendicular to the axis of each pipe sleeve;

the bolts at the two ends of the radian ring are pre-tightened, so that the pre-tightening force of the bolts can be converted into axial force for tightly pressing the sealing ring and the pipe sleeve.

10. The high-pressure leakage early warning flange according to claim 9, wherein the inner walls of the two radian rings are provided with circumferential grooves, and two sides of each circumferential groove are provided with pre-tightening inclined planes;

the boss of two the pipe sleeve is located in the circumference recess, be equipped with the cooperation inclined plane on the boss and the cooperation of the pretension inclined plane of circumference recess, pretension radian ring both ends bolt makes circumference recess internal diameter reduce, and two pretension inclined planes extrusion boss make two pipe sleeves compress tightly the sealing ring.