CN215294022U - Novel gas valve flange sealing gasket - Google Patents

Abstract

The utility model relates to the technical field of energy transmission and distribution in the metallurgical industry, in particular to a novel gas valve flange sealing gasket, which comprises two pipelines; the number of the flanges is two, and the flanges are respectively arranged on one side of the pipeline; the number of the bolts is multiple, and the bolts are circumferentially arranged on the flange; the metal winding pad is arranged between the two flanges; a reinforcement portion disposed on an inner ring of the metal winding pad; the number of the rebound parts is two, and the rebound parts are respectively arranged on two sides of the metal winding pad. The utility model discloses on ordinary seal gasket's basis, set up and compressed tightly and multiple protector, improved the leakproofness, also very big avoided appearing the problem of revealing.

Description

Novel gas valve flange sealing gasket

Technical Field

The utility model relates to a metallurgical industry energy transmission and distribution technical field especially relates to a novel gas valve flange seal gasket.

Background

The sealing of the traditional flange connecting structure belongs to forced sealing, the sealing between flanges uniformly compresses a gasket by means of the pre-tightening action of a main bolt, so that convex-concave non-flat surfaces on the sealing surface of the flange are filled up by means of the deformation of the gasket, and the interface leakage is prevented. When the equipment bears the pressure of a medium, the bolt is stretched under the action of tensile stress, the flange sealing surfaces move along the directions separated from each other, the pretightening force between the sealing surfaces and the gasket is reduced, the compression amount of the gasket is reduced, and the pretightening sealing ratio is reduced.

If the sealing gasket has enough resilience to enable the resilience to be larger than the leakage driving force formed by the pressure difference on the two sides of the sealing surface, the flange still keeps a good sealing state, and otherwise, the sealing fails. Leakage problems of such seals occur frequently, especially during gas transport, and the greater the likelihood of leakage of such seals when the pipe diameter is large.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a novel gas valve flange seal gasket has solved the problem that the flange was revealed among the gas transmission process.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

designing a novel gas valve flange sealing gasket, which comprises two pipelines; the number of the flanges is two, and the flanges are respectively arranged on one side of the pipeline; the number of the bolts is multiple, and the bolts are circumferentially arranged on the flange; the metal winding pad is arranged between the two flanges; a reinforcement portion disposed on an inner ring of the metal winding pad; the number of the rebound parts is two, and the rebound parts are respectively arranged on two sides of the metal winding pad.

Preferably, the method further comprises the following steps: the number of the pull sheets is multiple, and the pull sheets are all arranged on the outer ring of the metal winding pad and are arranged in the circumferential direction; the number of the trapezoidal pulling blocks is the same as that of the pulling pieces, and the trapezoidal pulling blocks are respectively arranged on one side of the pulling pieces; and the pressing part is arranged between the two pipelines.

Preferably, the thickness of the metal winding pad is half of that of the pull tab, and the cross section of the reinforcing part is in a V-shaped structure.

Preferably, the rebound part is made of a polytetrafluoroethylene elastic belt, the size of the rebound part is changed according to the size change of the metal winding pad, and the rebound part is connected with the metal winding pad in an adhesive mode.

Preferably, the portion that compresses tightly includes two collars, the collar cup joints with the pipeline respectively mutually, the impartial angular fixation of collar is equipped with a plurality of mount tables, the equal threaded connection of mount table is equipped with clamp bolt, the upper surface of mount table all is equipped with the thread groove corresponding with clamp bolt, and is a plurality of clamp bolt cup joints and is equipped with a plurality of clamp plates, the lower surface of clamp plate all is equipped with and trapezoidal draws the corresponding spacing groove of piece.

Preferably, the number of the installation tables is twice that of the pressing plates, and the number of the pressing plates is the same as that of the trapezoidal pulling blocks.

Compared with the prior art, the beneficial effects of the utility model reside in that: the reinforced part with the V-shaped cross section is arranged, so that after the flange is fixed, the reinforced part is tightly attached to the inner wall of the pipeline to form primary sealing, the sealing effect is improved, the good chemical corrosion resistance of the polytetrafluoroethylene can be kept by arranging the springback part adopting the polytetrafluoroethylene elastic band, and the polytetrafluoroethylene reinforced pipe has excellent flexibility, compression strength and creep resistance and cold flow resistance and has high tensile strength; through setting up trapezoidal piece and pulling-on piece of drawing, under the direction on inclined plane, combine mutually with the portion that compresses tightly when can guarantee the inseparable degree of rib and the laminating of pipeline inner wall, can apply an opposite effort to two flanges, can effectually avoid the bolt not hard up phenomenon to appear.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of a novel gas valve flange sealing gasket provided by the present invention;

fig. 2 is a cross-sectional view of a novel gas valve flange sealing gasket provided by the present invention;

fig. 3 is a front view of a metal winding pad of a novel gas valve flange sealing gasket provided by the present invention;

fig. 4 is a cross-sectional view of the metal winding pad of the novel gas valve flange sealing gasket provided by the utility model.

In the figure: pipeline 1, flange 2, bolt 3, metal winding pad 4, reinforcement 5, resilience portion 6, pull tab 7, trapezoidal pull block 8, pressure part 9, collar 901, mount pad 902, clamp bolt 903, thread groove 904, clamp plate 905, spacing groove 906.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a novel gas valve flange sealing gasket comprises two pipelines 1; the number of the flanges 2 is two, and the flanges 2 are respectively arranged on one side of the pipeline 1; the number of the bolts 3 is multiple, and the bolts 3 are circumferentially arranged on the flange 2; the metal winding pad 4 is arranged between the two flanges 2; a reinforcing part 5, the reinforcing part 5 being provided on the inner ring of the metal winding pad 4; rebound portion 6, the quantity of rebound portion 6 is two, and rebound portion 6 sets up respectively in the both sides of metal winding pad 4.

Specifically, still include: the pulling sheets 7 are arranged in a plurality of numbers, and the pulling sheets 7 are all arranged on the outer ring of the metal winding pad 4 and are arranged in the circumferential direction; the number of the trapezoidal pulling blocks 8 is the same as that of the pulling pieces 7, and the trapezoidal pulling blocks 8 are respectively arranged on one side of the pulling pieces 7; and the pressing part 9, wherein the pressing part 9 is arranged between the two pipelines 1.

Specifically, the thickness of the metal winding pad 4 is half of that of the pull tab 7, and the cross section of the reinforcing part 5 is in a V-shaped structure.

Specifically, rebound portion 6 adopts the polytetrafluoroethylene elastic webbing, and the size of rebound portion 6 changes according to the size change of metal winding pad 4, adopts adhesive bonding between rebound portion 6 and the metal winding pad 4.

The polytetrafluoroethylene elastic band keeps the excellent chemical corrosion resistance of polytetrafluoroethylene, has excellent flexibility and compression strength, excellent creep resistance and cold flow resistance, and has higher tensile strength. The sealing tape can be very conveniently adhered to the flange sealing surface, and has little waste in use. The sealing strip is an economical and practical sealing material at the flange sealing part under medium and low pressure. Maximum use temperature: 280 ℃, maximum service pressure: 6.3MPa, pH: 0 to 14.

Specifically, the pressing portion 9 includes two mounting rings 901, the mounting rings 901 cup joint with pipeline 1 respectively, the impartial fixed angle of mounting ring 901 is equipped with a plurality of mount tables 902, the equal threaded connection of mount table 902 is equipped with clamp bolt 903, the upper surface of mount table 902 all is equipped with the thread groove 904 corresponding with clamp bolt 903, a plurality of clamp bolts 903 cup joint and is equipped with a plurality of clamp plates 905, the lower surface of clamp plate 905 all is equipped with and trapezoidal draws the corresponding spacing groove 906 of piece 8.

Specifically, the number of the mounting tables 902 is twice the number of the pressing plates 905, and the number of the pressing plates 905 is the same as that of the trapezoidal pulling blocks 8.

The utility model discloses an application principle and use flow: the staff glues rebound part 6 on the two sides of metal winding pad 4 according to the specification of metal winding pad 4, and place it between two flanges 2, insert bolt 3 and rotate, make the distance between flange 2 reduce gradually, under the inclined plane direction of trapezoidal piece 8 that draws, trapezoidal piece 8 that draws pulls pulling-on piece 7 and metal winding pad 4 and begin to move, reinforcing part 5 laminating at the inner wall of pipeline 1 after accomplishing pipeline 1 and flange 2's fixed, cup joint collar 901 respectively on the surface of pipeline 1, insert spacing groove 906 on clamp plate 905 on trapezoidal piece 8, pass clamp bolt 903 clamp plate 905 and rotate again, exert a decurrent power to clamp plate 905 under the cooperation of thread groove 904, exert opposite effort to two flanges 2 under the inclined plane effect of trapezoidal piece 8 that draws.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A novel gas valve flange sealing gasket is characterized by comprising,

the number of the pipelines (1) is two;

the number of the flanges (2) is two, and the flanges (2) are respectively arranged on one side of the pipeline (1);

the number of the bolts (3) is multiple, and the bolts (3) are circumferentially arranged on the flange (2);

a metal winding mat (4), the metal winding mat (4) being arranged between the two flanges (2);

a reinforcement (5), said reinforcement (5) being disposed on an inner ring of said metal winding pad (4);

rebound parts (6), the quantity of rebound parts (6) is two, rebound parts (6) set up respectively in the both sides of metal winding pad (4).

2. The novel gas valve flange gasket seal of claim 1, further comprising:

the number of the pull sheets (7) is multiple, and the pull sheets (7) are all arranged on the outer ring of the metal winding pad (4) and are arranged in the circumferential direction;

the number of the trapezoidal pulling blocks (8) is the same as that of the pulling pieces (7), and the trapezoidal pulling blocks (8) are respectively arranged on one side of each pulling piece (7);

a pressing part (9), wherein the pressing part (9) is arranged between the two pipelines (1).

3. The novel gas valve flange gasket seal according to claim 1, wherein the thickness of the metal winding pad (4) is half of the thickness of the pull tab (7), and the cross section of the reinforcement portion (5) is of a V-shaped structure.

4. The novel gas valve flange seal gasket according to claim 1, wherein the resilient portion (6) is made of teflon elastic tape, the size of the resilient portion (6) changes according to the size of the metal winding pad (4), and the resilient portion (6) is connected with the metal winding pad (4) through adhesive.

5. The novel gas valve flange seal gasket according to claim 2, wherein the pressing portion (9) comprises two mounting rings (901), the mounting rings (901) are respectively sleeved with the pipeline (1), a plurality of mounting tables (902) are fixedly arranged at equal angles of the mounting rings (901), the mounting tables (902) are respectively provided with pressing bolts (903) in a threaded connection manner, the upper surfaces of the mounting tables (902) are respectively provided with threaded grooves (904) corresponding to the pressing bolts (903), a plurality of pressing plates (905) are sleeved with the pressing bolts (903), and the lower surfaces of the pressing plates (905) are respectively provided with limiting grooves (906) corresponding to the trapezoidal pulling blocks (8).

6. The novel gas valve flange gasket seal according to claim 5, wherein the number of the installation platforms (902) is twice the number of the pressing plates (905), and the number of the pressing plates (905) is the same as the number of the trapezoidal pulling blocks (8).

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