CN201368274Y

CN201368274Y - Gas pipe joint

Info

Publication number: CN201368274Y
Application number: CNU2009201142911U
Authority: CN
Inventors: 董阿能
Original assignee: NINGBO CHINAUST AUTOMOBILE FITTINGS CO Ltd
Current assignee: NINGBO CHINAUST AUTOMOBILE FITTINGS CO Ltd
Priority date: 2009-02-19
Filing date: 2009-02-19
Publication date: 2009-12-23
Anticipated expiration: 2019-02-19

Abstract

The utility model discloses a gas pipe joint, which has the advantages of low cost, good sealing property and long service life. The gas pipe joint comprises a male joint (1), a cover cap (5), a hoop (6) and a female joint (8), wherein a third sealing ring (7) is arranged between the end part of the male joint (1) and the inner bottom surface of the female joint (8); a circular groove II (9) is opened in the third sealing ring (7); one axial end face of the third sealing ring (7) is closely stuck with the end face and the partial outer surface of the end part of the male joint (1), and the other axial end face thereof is closely stuck with the inner bottom surface of the female joint (8).

Description

Gas path joint

Technical field

The utility model relates to pipeline interconnection technique field, specifically is a kind of gas path joint.

Background technique

In the gas path joint that generally uses, the bottom surface of the negative joint inside of gas path joint is provided with the plain cushion seal ring at present, and the end face of the tapered end of described male connector is close to described plain cushion seal ring, and described plain cushion seal ring plays seal action.Described plain cushion seal ring is the rubber material, when the rubber of described plain cushion seal ring use is really up to the mark, described male connector will cooperate not in place with negative joint, the rubber that uses when described plain cushion seal ring is crossed when soft, the sealing effect of described plain cushion seal ring is just bad, the rubber Material Selection that therefore described plain cushion seal ring uses requires high, has correspondingly increased cost.Because the end face of the tapered end of described male connector is close to described plain cushion seal ring, so described end face has extruding to the plain cushion seal ring, again because described end face and plain cushion seal ring area of contact are little, so described end face is bigger to the squeezing pressure of plain cushion seal ring, can cause the extrusion-deformation of plain cushion seal ring bigger like this, after described plain cushion seal ring is through long-time the use, described plain cushion seal ring is fatigue failure very easily, after described plain cushion seal ring has to a certain degree breakage, the sealing effect of described plain cushion seal ring is with regard to variation, described gas path joint just produces most probably and leaks, and the dirt in the pipeline that described gas path joint connected just can enter in the space between male connector and the negative joint easily, thereby there are very many corrosions the part that causes male connector in the space and negative joint, make the mechanical property variation of male connector and negative joint, that is to say that described gas path joint is short working life.

The model utility content

The technical problems to be solved in the utility model is, provides that a kind of cost is low, the gas path joint of good sealing effect, long service life.

The technical solution of the utility model is, the utility model gas path joint comprises male connector, block, clip, negative joint, described male connector and block Spielpassung, described male connector has the circular groove I that is used to place clip, an axial end face of described clip and a wall of described groove offset, the axial other end of described clip and an end face of block offset, described block and negative joint are spirally connected, be provided with at least one seal ring I between described male connector and the block, be provided with at least one seal ring II between described block and the negative joint, be provided with the 3rd seal ring between the bottom surface of the end of described male connector and negative joint inside, the inside of described the 3rd seal ring has circular groove II, the end face of an axial end face of described the 3rd seal ring and the end of described male connector and the part outer surface of end are close to, and the axial other end and the negative joint inner bottom surface of described the 3rd seal ring are close to.

After adopting said structure, the utility model compared with prior art, have the following advantages: because the inside of described the 3rd seal ring has circular groove II, the end face of an axial end face of described the 3rd seal ring and the end of described male connector and the part outer surface of end are close to, the axial other end and the negative joint inner bottom surface of described the 3rd seal ring are close to, so in described gas path joint, have gas stream out-of-date, this gas will be full of described circular groove II, at this moment, described circular groove II just is equivalent to an air chamber, under the effect of gas pressure, the end face of an axial end face of described the 3rd seal ring and the end of described male connector and the part outer surface of end will tightly stick together, the axial other end of described the 3rd seal ring and the bottom surface of negative joint inside also will tightly stick together, like this, described the 3rd seal ring just has extraordinary sealing effect; Because it is low that described the 3rd seal ring selection requires, soft slightly or hard partially rubber material all can, so correspondingly reduced cost; Because described the 3rd seal ring is not to rely on the mutual extrusion of male connector and negative joint to reach sealing, and the end area of contact of an axial end face of described the 3rd seal ring and described male connector is big, be that the pressure of gas pressure on the unit area of described the 3rd seal ring is just little, so be not easy fatigue failure after the use of described the 3rd seal ring through one period long period, still can reliable sealing, like this, just can not enter dirt in the space between described male connector and the negative joint, also just not having corrosion produces, thereby make the mechanical property of male connector and negative joint keep stable, make the utility model gas path joint longer than the working life of the gas path joint of prior art in the long-time back of using.

Description of drawings

Fig. 1 is the structural representation of the utility model gas path joint.

Fig. 2 is the structural representation of the gas path joint of prior art.

Fig. 3 is the exploded perspective view of the utility model gas path joint.

Shown in the figure:

The gas path joint of prior art description of symbols, 101, male connector, 102, zero type circle a, 103, zero type circle b, 104, zero type circle c, 105, block, 106, clip, the 107, the 3rd seal ring, 108, negative joint.

The utility model gas path joint description of symbols, 1, male connector, 2, zero type circle a, 3, zero type circle b, 4, zero type circle c, 5, block, 6, clip, the 7, the 3rd seal ring, 8, negative joint, 9, circular groove II.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

The gas path joint of prior art generally is made up of male connector 101, zero type circle a 102, zero type circle b 103, zero type circle c 104, block 105, clip 106, the 3rd seal ring 107, negative joint 108, described the 3rd seal ring 107 is the plain cushion seal ring, concrete structure and annexation can not add and give unnecessary details referring to Fig. 2.

The utility model gas path joint comprises male connector 1, block 5, clip 6, negative joint 8, described male connector 1 and block 5 Spielpassung, described male connector 1 has the circular groove I that is used to place clip 6, an axial end face of described clip 6 and a wall of described groove offset, the axial other end of described clip 6 offsets with an end face of block 5, described block 5 is spirally connected with negative joint 8, be provided with at least one seal ring I between described male connector 1 and the block 5, be provided with at least one seal ring II between described block 5 and the negative joint 8, be provided with the 3rd seal ring 7 between the bottom surface of the end of described male connector 1 and negative joint 8 inside, the inside of described the 3rd seal ring 7 has circular groove II9, the end face of an axial end face of described the 3rd seal ring 7 and the end of described male connector 1 and the part outer surface of end are close to, and the bottom surface of the axial other end of described the 3rd seal ring 7 and negative joint 8 inside is close to.Concrete structure is shown in Fig. 1 or 3.

Described the 3rd seal ring 7 be fabricated to prior art, need customize according to the shape of the end of described male connector 1, the end of male connector described in this example 1 be shaped as taper.

Described male connector 1 and the seal ring I of block between 5 are two, i.e. first seal ring and second seal ring, and described first seal ring is zero type circle a2, described second seal ring is zero type circle b3; Seal ring II between described block 5 and the negative joint 8 is one, i.e. the 4th seal ring, and described the 4th seal ring is zero type circle c4.Concrete structure is shown in Fig. 1 or 3.

Claims

1, a kind of gas path joint, it comprises male connector (1), block (5), clip (6), negative joint (8), described male connector (1) and block (5) Spielpassung, described male connector (1) has the circular groove I that is used to place clip (6), an axial end face of described clip (6) and a wall of described groove offset, one end face of the axial other end of described clip (6) and block (5) offsets, described block (5) is spirally connected with negative joint (8), be provided with at least one seal ring I between described male connector (1) and the block (5), be provided with at least one seal ring II between described block (5) and the negative joint (8), be provided with the 3rd seal ring (7) between the bottom surface of the end of described male connector (1) and negative joint (8) inside, it is characterized in that: the inside of described the 3rd seal ring (7) has circular groove II (9), the end face of an axial end face of described the 3rd seal ring (7) and the end of described male connector (1) and the part outer surface of end are close to, and the axial other end of described the 3rd seal ring (7) and negative joint (8) inner bottom surface are close to.

2, gas path joint according to claim 1 is characterized in that: the seal ring I between described male connector (1) and the block (5) is two, i.e. first seal ring and second seal ring; Seal ring II between described block (5) and the negative joint (8) is one, i.e. the 4th seal ring.