CN-117212450-B - Metal sealing ring pad

CN117212450BCN 117212450 BCN117212450 BCN 117212450BCN-117212450-B

Abstract

The invention discloses a metal sealing ring gasket which comprises a metal ring body, wherein the cross section of the upper end face and the lower end face of the ring body is trapezoid or elliptic, V-shaped grooves are formed in the upper end face and the lower end face of the ring body, V-shaped elastic sealing rings are arranged in the V-shaped grooves, an extrusion sealing groove is formed in the center of each V-shaped elastic sealing ring, and a communication groove is formed between each extrusion sealing groove and the inner side of the outer end face of each V-shaped elastic sealing ring. When the ring body is placed between the pipeline connecting surfaces for compression use, the upper end face and the lower end face of the ring body are in tight contact sealing fit with the V-shaped mounting groove, the V-shaped groove deforms inwards and extrudes the V-shaped elastic sealing ring outwards, so that the outer end face of the V-shaped elastic sealing ring is also in elastic contact sealing fit with the sealing surface, the sealing performance is improved, the good overall sealing fit is ensured, and the anti-leakage capability of the metal ring gasket hard seal is greatly improved.

Inventors

ZHANG HU
ZHANG YONG
HU BINGYI
LIU PING
Qin Xiangqiang
WANG YONGXIN
HU ZHIMING
DU YUSI

Assignees

温州市华海密封件有限公司

Dates

Publication Date: 20260512
Application Date: 20231027

Claims (5)

1. The metal sealing ring gasket comprises a metal ring body (1), wherein the cross section of the upper end face and the lower end face of the ring body (1) is trapezoid or elliptic, and the metal sealing ring gasket is characterized in that V-shaped grooves (2) are formed in the upper end face and the lower end face of the ring body (1), V-shaped elastic sealing rings (3) are arranged in the V-shaped grooves (2), annular arch grooves (11) are formed in the outer side wall of the ring body (1), an elastic hoop (12), a rubber sealing ring (13) and an elastic rubber gasket (14) are sequentially arranged on the annular arch grooves (11) from inside to outside, and the rubber sealing ring (13) is used for bonding the annular arch grooves (11), the elastic hoop (12) and the elastic rubber gasket (14); the center of V type elastic sealing washer (3) is equipped with extrusion seal groove (4), is equipped with intercommunication groove (5) between the outer terminal surface inboard of extrusion seal groove (4) and V type elastic sealing washer (3), extrusion seal groove (4) internally mounted has C shape holding ring (10) that one deck was made by water swelling rubber.
2. The metal sealing ring gasket according to claim 1, wherein a hard rubber sealing ring (6) is arranged on the outer bottom corner of the outer end surface of the V-shaped elastic sealing ring (3).
3. The metal sealing ring gasket according to claim 2, wherein the material formula of the hard rubber sealing ring (6) comprises, by mass, 10 parts of natural rubber, 50 parts of neoprene, 5 parts of a plasticizer, 10 parts of palygorskite particles, 8 parts of bakelite powder, 6 parts of an antioxidant, 5 parts of N660 carbon black, 8 parts of a vulcanizing agent, 8 parts of antimony oxide, 10 parts of stearic acid and 4 parts of an antioxidant, and the rubber is prepared by adding the above materials in the proportion into an internal mixer for mixing and banburying at a temperature of 125-130 ℃ for 3-5 hours.
4. The metal seal ring gasket of claim 1, wherein the material of the ring body (1) comprises, by mass, 60% -65% of iron, 0.01% -0.03% of carbon, 18% -20% of chromium, 8% -10% of nickel, 0.20% -0.30% of manganese, 0.05% -0.07% of silicon and 2% -4% of titanium.
5. The metal sealing ring gasket of claim 1, wherein the inner hole of the ring body (1) is fixedly provided with an elastic inner sealing ring gasket (15), the outer side of the inner sealing ring gasket (15) is provided with two embedded rings (16), the inner side of the inner sealing ring gasket is provided with two expansion grooves (17), the embedded rings (16) correspond to the expansion grooves (17), a plurality of reinforcing ribs (18) are arranged on the expansion grooves (17) at intervals, the inner side wall of the ring body (1) is provided with two embedded grooves (19), and the two embedded grooves (19) are in concave-convex fit with the two embedded rings (16).

Description

Metal sealing ring pad Technical Field The invention relates to the technical field of hard sealing rings, in particular to a metal sealing ring gasket. Background The metal ring pad for hard sealing is placed between the equipment connecting surfaces to be tightly pressed when in use, so that the end surface of the ring pad is tightly contacted with the equipment connecting surfaces for sealing fit. In practice, because of reasons such as processing assembly errors or uneven distribution of pressing force, the contact between the ring pad and the equipment connecting surface is insufficient, the tightness degree is uneven, the sealing fit effect is not good enough, leakage can occur, and the sealing reliability is reduced. Disclosure of Invention The invention aims to solve the problems in the prior art and provides a metal sealing ring gasket. The technical scheme includes that the metal sealing ring gasket comprises a metal ring body, wherein the cross section of the upper end face and the lower end face of the ring body is trapezoid or elliptic, V-shaped grooves are formed in the upper end face and the lower end face of the ring body, V-shaped elastic sealing rings are arranged in the V-shaped grooves, annular arch grooves are formed in the outer side wall of the ring body, an elastic hoop, a rubber sealing ring and an elastic rubber gasket are sequentially arranged on the annular arch grooves from inside to outside, and the rubber sealing ring is used for bonding the annular arch grooves, the elastic hoop and the elastic rubber gasket. Further perfecting, a hard rubber sealing ring is arranged on the outer bottom corner of the outer end face of the V-shaped elastic sealing ring. The hard rubber sealing ring is further perfected by a material formula, which comprises, by mass, 10 parts of natural rubber, 50 parts of neoprene, 5 parts of plasticizer, 10 parts of palygorskite particles, 8 parts of bakelite powder, 6 parts of antioxidant, 5 parts of N660 carbon black, 8 parts of vulcanizing agent, 8 parts of antimony oxide, 10 parts of stearic acid and 4 parts of antioxidant, and mixing and banburying the materials in an internal mixer at a temperature of 125-130 ℃ for 3-4 hours. Further perfecting, the center of the V-shaped elastic sealing ring is provided with an extrusion sealing groove, and a communication groove is arranged between the extrusion sealing groove and the inner side of the outer end face of the V-shaped elastic sealing ring. And a layer of C-shaped supporting ring made of water-absorbing expansion rubber is arranged in the extrusion sealing groove. Further perfecting, fixedly mounting has elastic interior sealing ring pad on the hole of ring body, and interior sealing ring pad's outside and inboard are equipped with twice embedded ring and twice hook groove respectively, and the embedded ring corresponds with the position of expansion groove, and the interval is provided with a plurality of strengthening ribs on the expansion groove, be equipped with twice embedded groove on the inside wall of ring body, twice embedded groove carries out unsmooth cooperation with twice embedded ring. The ring pad has the beneficial effects that 1, the whole structure of the ring pad is novel. When the ring body is placed between the pipeline connecting surfaces and tightly pressed for use, the upper end face and the lower end face of the ring body are tightly contacted with the V-shaped mounting groove for sealing, the V-shaped groove deforms inwards, the V-shaped elastic sealing ring is extruded outwards, the outer end face of the V-shaped elastic sealing ring is elastically contacted with the sealing surface for sealing, the sealing performance is improved, the integral sealing fit is ensured to be good, and the anti-leakage capability of the metal ring gasket hard seal is greatly improved. 2. The composite material of the ring pad is novel. The ring body is made of a Ti-containing 304 stainless steel metal material, has good wear resistance and corrosion resistance, low material hardness and high toughness, and is suitable for being applied to manufacturing a metal sealing ring gasket with long service life. The V-shaped elastic sealing ring is made of hard rubber sealing ring materials at the corners, and has excellent corrosion resistance and strong leakage resistance. Drawings FIG. 1 is a schematic view of the installation of the present invention; FIG. 2 is a schematic diagram of the structure of the present invention after the pre-tightening force is applied; FIG. 3 is a schematic view of a ring body configuration with an inner seal ring gasket assembled; FIG. 4 is an enlarged schematic view of the structure without the annular arches; FIG. 5 is an enlarged schematic view of the cross-sectional structure of the V-shaped elastic seal ring in FIG. 4; The reference numerals indicate that 1, a ring body, 2, a V-shaped groove, 3, a V-shaped elastic sealing ring, 4, an extrusion sealing groove, 5, a co