CN201021744Y

CN201021744Y - A sealing steel ring for steel sealing

Info

Publication number: CN201021744Y
Application number: CNU2006200908046U
Authority: CN
Inventors: 赵广友; 赵广臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-16
Filing date: 2006-05-16
Publication date: 2008-02-13
Anticipated expiration: 2016-05-16

Abstract

The utility model relates to an obturating steel ring for rigid sealing, belonging to the connecting and sealing device for the pipelines feeding the gaseous or the liquid objects. A rectangular heave shaped lathe dog head whose two ends are welded with pipelines is divided into two parts, a hole passage is arranged in the center part, the sealing part of the conical surface of the pipeline in the hole passage contacts the contacting surface of the obturating ring, the rectangular heave part on the two ends of the outer side of the lathe dog head has a lathe dog clamping the two side lathe dog heads close. The obturating ring has an inner hole, and the two side edges of the obturating ring are provided with the steel rings with a taper sylphon bellowss shaped structure formed by a plurality of spheres, and an annular positioning ring is arranged on the centerline of the ring wall of the sealing ring. The device guarantees a better sealing performance, in addition, by providing with a plurality of various gyration sphere, the obturating steel ring can be used for more than two times. The utility model has the function of preventing self-overturn with simple structure and convenient usage, and can be widely used in the connection and sealing of the pipelines.

Description

A kind of sealing steel loop that is used for the rigidity sealing

Technical field:

The utility model relates to a kind of sealing steel loop that is used for the rigidity sealing, belongs to being used to carry the pipeline of vapour, liquid material to connect the seal arrangement class.

Background technique:

The oil field uses steam injection pipeline to improve oil well output to injecting high-temperature steam in the well in gas injection process at present, and pipeline relies on pipe joint to connect, most of pipe joint passes through conical surface seal in the existing technology, because the conical surface is shorter, repeated wear clip head can cause seals damaged during use, pipeline occurs and connect frequent the leakage, not only the vapour construction is annotated in influence, also can cause the accident, therefore, a kind of structure of many at present employings is a cone seal steel loop curved surface SEALING FITTING, this joint has prolonged pipe joint working life, also improved sealing effect, but because the conical surface seal part of the pipeline connecting device of this type just relies on the single curved surface sealing above the connecting head, in practical operation, when still keeping away unavoidable on-the-spot the use, pipeline is because of construction and annotate the drawback that vapour dismounting and carrying cause curved surface sealing point of contact to damage for a long time, and for example application number is that 03214025.8 utility model patent is an example.

Summary of the invention:

The utility model purpose is in order to overcome above-mentioned shortcoming, and a kind of sealing steel loop that is used for the rigidity sealing is provided, and during use, can avoid annotating the pipeline of high temperature, high pressure steam, and leak the joint, also can reduce because of the manual operation reason and cause pipeline leakage.

The technical solution of the utility model is such:

For achieving the above object, the utility model is in the profile that two ends are welded with pipeline is the clip head of " protruding " word shape seal ring to be housed, the clip head is that cast steel material is made, profile is " protruding " font, this clip is divided into two-part, intermediate portion has the duct, the pipeline conical surface and seal ring surface of contact in the duct contact with each other, play the place " protruding " at two ends, the clip head outside one clip is arranged, left and right sides clip head is tightened, described seal ring is to have the steel loop that endoporus and both sides of the edge are the taper bellows-like structure formed of a plurality of spheres, at the position of center line of seal ring ring wall one ring-type positioning ring is arranged.

The conical surface angle of the taper bellows-like structure of described seal ring top is between the 14-24 degree, wherein the R2 spherical radius is the 25-48 millimeter, optimum radius is 38 millimeters, and the distance between the centre distance between the two N-Side surf R2 is between ± 10 millimeters, and optimum size is 3 millimeters.

Described seal ring material is that steel material is made, and its hardness should be less than the hardness of clip head.

The utility model working method is such.

During use, earlier seal ring is loaded between two clips, and make positioning ring aim at the central position that pipeline connects seal arrangement, then, " protruding " that snap into the clip head by clip rises, the last both sides that again pipeline are welded on the clip head, can use, high temperature and high pressure steam just can enter in the oil well through pipeline during work, this pipeline since the sealing surface between seal ring and the jointing clip head for the taper corrugated tube shape has a plurality of curved surface sealing configurations, rely on a curved surface sealing under the normal state, as using in the work for a long time or improper use, pipeline leakage appears, as long as tighten the clip head, this moment R1, R3 first, the 3rd curved surface can play again the effect of pipeline sealing compensation, still can continue to use.

The utility model compared with prior art has distinguishing feature:

Because the sealing surface of the utility model seal ring adopts the taper bellows-like structure, wherein revolving sphere sealing, have a plurality of different surface of contact, can better play seal action, except that better sealing effect, also can repeatedly use, in addition during use, positioning ring in this device can effectively prevent the seal ring upset in the pipeline connection procedure.

Description of drawings

Fig. 1 is the utility model overall structure schematic representation.Fig. 2 is the seal ring structure schematic representation.Fig. 3 is the positioning ring enlarged diagram.

Among the figure: 1, clip, 2, the clip head, 3, seal ring, 4, positioning ring, 5, pipeline conical surface seal part, 6, pipeline forms.

Embodiment:

The utility model is provided by following examples: below in conjunction with accompanying drawing the utility model is described further.

Among Fig. 1, sealing steel loop is that the profile that is welded with pipeline at two ends is equipped with a seal ring 3 in the clip head 2 of " protruding " word shape, described seal ring 3 is for having endoporus, and both sides of the edge have the taper ripple that a plurality of spheres are formed, the steel loop of tubulose has a ring-type positioning ring 4 (Fig. 3) at seal ring 3 ring wall position of center line, and this ring can make easy for installation.Clip head 2 is made for cast steel material, profile is " protruding " word, this clip head 2 is divided into two-part, there is the duct centre, in pipeline conical surface seal part 5 is arranged, this part contacts with seal ring 3 surface of contact, can play seal action, prevent that material leaks in the pipeline, " protruding " at two ends, clip head 2 outside played a clip 1 at place, with two-part clip head 2 chuckings in the left and right sides.

The taper bellows-like structure of seal ring 3 tops, its conical surface angle is between the 14-24 degree, and wherein the R2 spherical radius is the 25-48 millimeter, and optimum radius is 38 millimeters, and the distance between the centre distance between the two N-Side surf R2 is between ± 10 millimeters, and optimum size is 3 millimeters.

Described seal ring 3 materials are that steel material is made, and its hardness should its objective is in order to keep sealing effect less than the hardness of the pipeline conical surface seal part 5 of clip head 2.

Claims

1. one kind is used for the sealing steel loop that rigidity seals, be that the profile that is welded with pipeline at two ends is equipped with a seal ring (3) in the clip head (2) of " protruding " word shape, clip head (2) is made for cast steel material, profile is " protruding " font, this clip head (2) is divided into two-part, intermediate portion has the duct, pipeline conical surface seal part (5) in the duct contacts with each other with seal ring (3) surface of contact, playing the place " protruding " at two ends, clip head (2) outside has a clip (1), with clip head (2) chucking of and arranged on left and right sides; It is characterized in that: described seal ring (3) is the steel loop that a plurality of spheres are formed the taper bellows-like structure for having endoporus and both sides of the edge, at the position of center line of seal ring (3) ring wall one ring-type positioning ring (4) is arranged.

2. a kind of sealing steel loop that is used for the rigidity sealing according to claim 1, it is characterized in that: the taper bellows-like structure of seal ring (3) top, its conical surface angle is between the 14-24 degree, wherein the R2 spherical radius is the 25-48 millimeter, optimum radius is 38 millimeters, and the distance between the centre distance between the two N-Side surf R2 is between ± 10 millimeters, and optimum size is 3 millimeters.

3. a kind of sealing steel loop that is used for the rigidity sealing according to claim 1, it is characterized in that: described seal ring (3) material is that steel material is made, and its hardness should be less than the hardness of clip head (2).