CN216344511U

CN216344511U - Clamp formula flange

Info

Publication number: CN216344511U
Application number: CN202122437919.5U
Authority: CN
Inventors: 张政; 谢建昌; 孙友莲; 王良
Original assignee: ROC-MASTER PIPING SOLUTIONS Ltd
Current assignee: Suzhou Luokeli Technology Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-04-19
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a clamp type flange, which comprises a clamp, wherein the clamp is formed by vertically and detachably butting two half clamps with the same structure, a taper groove is radially formed in the inner peripheral wall of the clamp, a pair of butt flanges which are symmetrically arranged at the left and right sides and an elastic metal sealing element which is tightly and closely attached between the two butt flanges are fastened in the taper groove, a corrosion-resistant alloy layer is welded on the inner wall of each butt flange, an inclined structure is formed in the inner peripheral surface of the butt end of each butt flange, each annular sealing groove metal sealing element comprises a sealing ring which is attached between the butt surfaces of the two butt flanges and an extrusion strip which is annularly arranged on the inner peripheral wall of the sealing ring, and the upper end and the lower end of each extrusion strip are correspondingly and respectively attached in the two annular sealing grooves. The utility model solves the technical problem of how to effectively improve the load capacity and the tightness of the clamp type flange, and has the advantages of long service life, good sealing property, high load capacity and the like.

Description

Clamp formula flange

Technical Field

The utility model relates to the technical field of pipeline connecting devices, in particular to a clamp type flange.

Background

The clamp type flange is a commonly used connecting device in the connection of submarine pipelines. The existing clamp type flange is composed of a clamp, two butt joint flanges fastened in the clamp and a rubber sealing ring pressed between butt joint ends of the two butt joint flanges, and is obvious, the structure enables the extrusion area between the butt joint flanges and the clamp to be small, and in addition, the flange is located in seabed high pressure and high temperature and corrosive environments for a long time, so that the service life is short, the flanges and the rubber sealing ring are easy to deform and cannot be tightly attached together, the sealing effect is poor, even the sealing is failed, and great leakage risks exist.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is how to effectively improve the load capacity and the tightness of the clamp type flange.

In order to solve the technical problem, the utility model provides a clamp type flange which comprises a clamp, wherein the clamp is formed by vertically and detachably butting two half clamps with the same structure, a taper groove is radially formed in the inner peripheral wall of the clamp, a pair of butt flanges which are symmetrically arranged from left to right and a metal sealing element which is tightly and tightly extruded and attached between the two butt flanges and has elasticity are fastened in the taper groove, a corrosion-resistant alloy layer is welded on the inner wall of each butt flange, an inclined annular sealing groove is formed in the inner peripheral surface of the butt end of each butt flange, each metal sealing element comprises a sealing ring which abuts between the butt surfaces of the two butt flanges and an extrusion strip which is annularly arranged on the inner peripheral wall of the sealing ring, and the upper end and the lower end of each extrusion strip are correspondingly matched and abutted in the two annular sealing grooves respectively.

In one embodiment of the utility model, the angle of inclination of the annular seal groove is 14-16 °.

In one embodiment of the utility model, the taper of the tapered slot is 3 ° to 6 °.

In one embodiment of the utility model, the corrosion-resistant alloy layer has a thickness of not less than 3 mm.

In an embodiment of the utility model, the half hoop comprises a body in a semicircular ring shape, two ends of the body are respectively provided with an outward-turned ear seat, and a plurality of connecting holes are vertically arranged on the ear seats in a penetrating manner.

In one embodiment of the utility model, the number of the connecting holes is two, and the connecting holes are symmetrically arranged in the middle of the ear seat.

In one embodiment of the utility model, the attachment holes are bolt holes.

In one embodiment of the utility model, the sealing ring and the extruded strip are integrally formed.

In one embodiment of the utility model, the metal seal is made of a corrosion resistant resilient alloy material.

In one embodiment of the utility model, the taper groove is covered with a silica gel pad.

Compared with the prior art, the technical scheme of the utility model has the following advantages: the arrangement that the taper grooves for fastening the butt flange and the metal sealing element are arranged on the inner circumferential surface of the clamp in the radial direction increases the extrusion area between the butt flange and the metal sealing element; the annular sealing grooves are obliquely arranged on the inner peripheral surface of the butt joint end of the butt joint flanges, the metal sealing element is arranged into a structure which is formed by sealing rings abutted between the butt joint surfaces of the two butt joint flanges and extrusion strips annularly arranged on the inner peripheral wall of the sealing rings and respectively abutted between the upper end and the lower end in a corresponding and matched mode in the two annular sealing grooves, the service life is prolonged, the metal sealing element can be always tightly abutted between the pair of butt joint flanges, and therefore the clamp type flange is large in load capacity and good in sealing performance.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic diagram of the exploded structure of FIG. 1;

the specification reference numbers indicate: 1. the device comprises a hoop 11, a half hoop 12, a taper groove 2, a butt flange 21, an annular sealing groove 3, a metal sealing element 31, a sealing ring 32, an extrusion strip 4 and a corrosion-resistant alloy layer.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1, 2 and 3: the utility model provides a clamp 1 formula flange, includes clamp 1, clamp 1 is formed by two half clamps 11 upper and lower detachably butt joints that the structure is the same, and half clamps 11's structure is as follows: half clamp 11 is including being the annular body of semicircle, the both ends of body are equipped with an ear seat that turns over to the book outward respectively, vertically on the ear seat wear to be equipped with a plurality of connecting holes, specifically, the connecting hole is the bolt hole, and quantity be two and about the middle part symmetry of ear seat sets up. The inner peripheral wall of the hoop 1 is radially provided with a taper groove 12, and the taper of the taper groove 12 is 3-6 degrees. A pair of butt flange 2 that bilateral symmetry set up and closely crowded subsides are in to the fastening in tapering groove 12 are in two between the butt flange 2 and have elastic metal seal 3, set up like this and increased the extrusion area between clamp 1 and the butt flange 2 to the beneficial effect that load capacity can improve has been realized. The inner wall of the butt flange 2 is welded with a corrosion-resistant alloy layer 4, the thickness of the corrosion-resistant alloy layer 4 is not less than 3mm, an inclined annular sealing groove 21 is formed in the inner circumferential surface of the butt end of the butt flange 2, and the inclination angle of the annular sealing groove 21 is 14-16 degrees. Metal seal 3 is including supporting paste two sealing ring 31 and the ring between the butt joint face of flange 2 are established extrusion strip 32 on the internal perisporium of sealing ring 31, the upper and lower end of extrusion strip 32 corresponds the adaptation respectively and supports paste two in the annular seal groove 21, set up like this and make metal seal 3 closely paste between a pair of flange 2 all the time to the technical effect that the leakproofness can effectively improve has been realized.

Further, the seal ring 31 and the extrusion strip 32 are integrally formed of a corrosion-resistant elastic alloy material, so that the metal seal 3 has a compact structure and high strength.

Further, the taper groove 12 is covered with a silica gel pad, so that the service life of the metal sealing element 3 is prolonged.

In summary, the present invention provides the clamp 1 type flange with the advantages of long service life, good sealing performance, and large load capacity by radially forming the taper groove 12 for fastening the pair of the butt flange 2 and the metal sealing member 3 on the inner circumferential surface of the clamp 1, forming the annular sealing groove 21 obliquely formed on the inner circumferential surface of the butt end of the butt flange 2, and forming the metal sealing member 3 into a structure composed of the sealing ring 31 abutted between the butt surfaces of the two butt flanges 2 and the pressing strip 32 annularly formed on the inner circumferential wall of the sealing ring 31 and having the upper and lower ends respectively correspondingly fitted and abutted in the two annular sealing grooves 21.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.

Claims

1. The utility model provides a clamp formula flange, a serial communication port, including the clamp, the clamp is formed by detachably butt joint about two half clamps that the structure is the same, radially seted up the taper slot on the internal perisporium of clamp, the taper slot internal fastening has the flange that a pair of bilateral symmetry set up and closely extrudes pastes two between the flange and have elastic metal seal, it is equipped with corrosion-resistant alloy-layer to weld on the inner wall of flange, and sets up the annular seal groove that the slope set up on the inner peripheral surface of its butt joint end, metal seal includes to paste two sealing ring and ring between flange's the butt joint face are established extrusion strip on the internal perisporium of sealing ring, the upper end and the lower extreme of extrusion strip correspond the adaptation respectively and paste two in the annular seal groove.

2. The band flange of claim 1, wherein the annular seal groove is inclined at an angle of 14 ° -16 °.

3. The clamp flange according to claim 1, wherein the taper of the tapered groove is 3 ° to 6 °.

4. The clamp flange of claim 1, wherein the corrosion-resistant alloy layer has a thickness of not less than 3 mm.

5. The clamp type flange according to claim 1, wherein the half clamp comprises a body in a semi-circular shape, two ends of the body are respectively provided with an outwardly turned ear seat, and a plurality of connecting holes are vertically formed through the ear seats.

6. The band clamp flange according to claim 5, wherein the number of the coupling holes is two and is symmetrically disposed about a middle portion of the ear seat.

7. The clamp flange according to claim 5, wherein the coupling holes are bolt holes.

8. The clamp flange according to claim 1, wherein the sealing ring and the extruded strip are integrally formed.

9. The clamp flange of claim 1, wherein the metal seal is made of a corrosion resistant resilient alloy material.

10. The clamp flange according to claim 1, wherein the tapered groove is covered with a silicone gasket.