CN210440714U - Solderless combined type dual metal high-pressure union - Google Patents

Abstract

A weldless combined type double metal high-pressure union belongs to the technical field of resources and environment, and comprises a male union head, a female union head and a union nut; it is equipped with first recess to be in an unaided way by the nut near mother, the cross-section of first recess is half-circular arc, be equipped with in the first recess in an unaided way by aerifing the child, it is in an unaided way by aerifing the child body, metal connecting plate and valve core to be in an unaided way, the cross-section of the body of the unaided way is half-circular arc, be equipped with the screw thread on the inner wall of metal connecting plate, metal connecting plate and mother are in an unaided way by the tip threaded connection of head. The utility model discloses the union adopts the connected mode of components of a whole that can function independently by the nut, establishes the screwed metal sheet and is connected with the union by the nut through the union by aerifing the child body, and the outer wall part of the child body of inflating is fixed on the union by the inner wall of nut in the union, and the union is inflated into an amount of gas by aerifing the child body, can provide certain shock-absorbing capacity, and the while closely laminates by the nut inner wall with the union and provides good sealing performance.

Description

Solderless combined type dual metal high-pressure union

Technical Field

The utility model belongs to the technical field of resource and environment, specifically, relate to a dual metal high pressure union of solderless combination formula.

Background

The union is a pipe connector convenient to mount and dismount, is widely used in an acid working environment, is mainly used in a discharge pipeline, an input pipeline, a temporary fluid pipeline and other pipeline connections for conveying fluid under other working conditions, and can separate two pipes without moving the pipes. In the use process of the union, because two sections of pipelines are connected, the tightness of the union has strict requirements in the petroleum industry.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a dual metal high pressure union of solderless combination formula has solved the problem of the leakproofness of union.

The technical scheme is as follows: the utility model provides a solderless combined type double metal high-pressure union, which comprises a male union head, a female union head and a union nut, wherein one end of the male union head is arranged in one end of the female union head, and the male union head and the female union head are connected through the union nut; the union is provided with a first groove by the inner wall of one end of the nut close to the union head, the cross section of the first groove is in a semi-circular arc shape, a union inflatable tire is arranged in the first groove and comprises a union inflatable tire body, a metal connecting plate and a valve core, the cross section of the union inflatable tire body is in a semi-circular arc shape, the inner wall of the union inflatable tire body is a plane, the metal connecting plate is fixedly arranged on the inner wall of the union inflatable tire body, threads are arranged on the inner wall of the metal connecting plate, the metal connecting plate is in threaded connection with the end part of the union head, the union inflatable tire body is arranged in the first groove, the valve core is arranged on the union inflatable tire body and can be inflated or deflated through the valve core through the inflatable tire body, a first through hole is arranged in the radial direction of the union nut, and the valve core is arranged in the first through hole, and the inflation and deflation end part of the valve core extends out of the first through hole. The utility model discloses a dual metal high pressure union of no welding combination formula will be in the union by the connected mode that the nut adopted the components of a whole that can function independently, establishes the screwed metal sheet and is connected by the nut through in the union by inflating the child body with in the union, and in the union by the outer wall part of inflating the child body fix on in the union by the inner wall of nut, in the union by inflating the child body fill into an amount of gas, can provide certain shock-absorbing capacity, provide good sealing performance with in the union by the inseparable laminating of nut inner wall simultaneously.

Further, foretell dual metal high pressure union of solderless combination formula, public union is equipped with first convex part by the tip of the nearly mother union of head rest, the outer wall of first convex part is first arcwall face, the mother and union is equipped with the second recess by the tip of the nearly public union of head rest by the head, the inner wall of second recess is the second arcwall face, first arcwall face and the laminating of second arcwall face. The laminating of arcwall face has at first improved area of contact, and secondly the arcwall face has good contact nature, improves sealing performance.

Furthermore, according to the non-welding combined type double-metal high-pressure union, the end face, away from the union head, of the first convex portion is provided with the third groove, the third groove is annularly arranged, and the cross section of the third groove is trapezoidal.

Further, according to the welding-free combined type double-metal high-pressure union, the inner wall of the union nut is provided with the first sealing ring, the first sealing ring is arranged in an annular shape, the cross section of the first sealing ring is trapezoidal, and the first sealing ring is arranged in the third groove. Through the first sealing ring, the end face of the union nut, which is attached to the union male head, is sealed.

Furthermore, the joint of the union head and the union head is provided with a labyrinth seal structure, the labyrinth seal structure comprises a first labyrinth seal ring body, a second labyrinth seal ring body, a first seal body and a second seal body, wherein the first labyrinth seal ring body is in a cylindrical shape with openings at two ends, and two ends of the labyrinth seal ring body I are respectively arranged in one end of the male union head and one end of the female union head, the labyrinth seal ring body II is arranged on the outer wall of the labyrinth seal ring body I, and a second labyrinth seal ring body is positioned between the end surface of the male union head and the end surface of the female union head, the first seal body and the second seal body are respectively arranged on the upper end surface and the lower end surface of the second labyrinth seal ring body, the first seal body is disposed within an end face of the union head and the second seal body is disposed within an end face of the union head. Through labyrinth seal structure, just can take place the seepage through multiple seal structure, improved sealing performance, improved the safety in utilization and the life-span of nonyl.

Further, foretell dual metal high pressure union of solderless combination formula, public union is equipped with the fourth recess by head end inner wall near the union by the head rest, the union is equipped with the fifth recess by the head end inner wall near public union by the head rest on, the both ends of labyrinth seal body one set up respectively in fourth recess and fifth recess. The first uterine cavity sealing ring body is arranged on the inner walls of the male union.

Further, according to the non-welding combined type dual metal high-pressure union, the inner walls of the fourth groove and the fifth groove are provided with the group of sixth grooves, the outer wall of the first labyrinth seal ring body is provided with the group of seventh grooves, the sixth grooves and the seventh grooves are arranged in a one-to-one mode, and the sixth grooves and the seventh grooves are internally provided with the second seal rings. The second sealing ring is arranged at intervals to form a sectional sealing structure, so that the sealing performance is improved.

Furthermore, the double metal high pressure union of above-mentioned solderless combination formula, the union is equipped with the screw thread fixing base by nut outer wall first through-hole department, be equipped with the nut end cap on the screw thread fixing base, nut end cap and screw thread fixing base threaded connection. The valve core is packaged in the union nut through the nut plug, so that the valve core is prevented from being damaged when extending out of the outer part.

Further, according to the non-welding combined type double-metal high-pressure union, the end, away from the first labyrinth seal body, of the second labyrinth seal body is provided with the wedge-shaped portion. The wedge-shaped part can extend to the inner wall of the first groove, so that the labyrinth seal ring body II can fill the connecting gap between the male union head and the female union head.

Further, according to the non-welding combined type double-metal high-pressure union, the cross sections of the first sealing body and the second sealing body are isosceles trapezoid. The first sealing body and the second sealing body of the isosceles trapezoid structure are convenient to arrange the small interface part and the groove at first, after the small interface part is compressed, the outer walls of the first sealing body and the second sealing body are tightly attached to the inclined plane of the inner wall of the groove, and the sealing performance is good.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: double metal high pressure union of solderless combination formula, simple structure, it is reasonable, high durability and convenient use, low in application cost, adaptability is good, through public union by the head, female union is by the split type structure of head and union by the nut, be convenient for be connected with the pipeline, simultaneously in order to improve sealing performance, set up the union by inflating child and labyrinth seal structure, the union is through regularly mending gas by inflating the child, can remain throughout with the laminating of the inner wall of union by the nut, certain buffer capacity has simultaneously, labyrinth seal structure has changed the single mode that sets up the sealing washer and seals, the sealed body of multiunit through setting up can reach good sealed effect, has very high spreading value.

Drawings

Fig. 1 is a schematic structural view of a weldless combined type dual metal high-pressure union of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion of the structure shown at B in FIG. 1;

fig. 4 is a schematic structural diagram of the union nut of the present invention.

In the figure: the male union head 1, the first convex part 11, the first arc-shaped surface 12, the third groove 13, the fourth groove 14, the sixth groove 15, the second sealing ring 16, the female union head 2, the second groove 21, the second arc-shaped surface 22, the fifth groove 23, the union nut 3, the first groove 31, the first through hole 32, the first sealing ring 33, the thread fixing seat 34, the nut plug 35, the union pneumatic tire 4, the union pneumatic tire body 41, the metal connecting plate 42, the valve core 43, the labyrinth seal structure 5, the first labyrinth seal body 51, the seventh groove 511, the second labyrinth seal body 52, the wedge 521, the first seal body 53 and the second seal body 54.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

A weldless combined type double metal high pressure union as shown in fig. 1-4, comprising a male union head 1, a female union head 2 and a union nut 3, wherein one end of the male union head 1 is arranged in one end of the female union head 2, and the male union head 1 and the female union head 2 are connected through the union nut 3; the inner wall of one end of the union nut 3 close to the union head 2 is provided with a first groove 31, the section of the first groove 31 is in a semi-circular arc shape, a union inflatable tire 4 is arranged in the first groove 31, the union inflatable tire 4 comprises a union inflatable tire body 41, a metal connecting plate 42 and a valve core 43, the section of the union inflatable tire body 41 is in the semi-circular arc shape, the inner wall of the union inflatable tire body 41 is a plane, the metal connecting plate 42 is fixedly arranged on the inner wall of the union inflatable tire body 41, the inner wall of the metal connecting plate 42 is provided with threads, the metal connecting plate 42 is in threaded connection with the end part of the union head 2, the union inflatable tire body 41 is arranged in the first groove 31, the valve core 43 is arranged on the union inflatable tire body 41, the union inflatable tire body 41 can be inflated or deflated through the valve core 43, the first through hole 32 is arranged on the union nut 3 in the radial direction, the valve core 43 is arranged in the first through hole 32, and the inflation and deflation end portions of the valve core 43 protrude out of the first through hole 32. In the above structure, the inflatable tire body 41 is fixedly connected with the inner wall of the first groove 31, for example, a part of the outer wall of the inflatable tire body 41 is adhered to a part of the inner wall of the first groove 31, a certain amount of gas is firstly injected into the inflatable tire body 41 through the valve core 43, a certain supporting force is provided enough to support the metal connecting plate 42, the metal connecting plate 4 is connected with the union by the head 2 through the screw thread, and then the inflatable tire body 41 is continuously inflated through the valve core 43, so that the outer wall of the inflatable tire body 41 is tightly adhered to the inner wall of the first groove 31.

In addition, the end portion of the male union close to the female union by the head 1 is provided with a first convex portion 11, the outer wall of the first convex portion 11 is a first arc-shaped surface 12, the end portion of the female union close to the male union by the head 2 is internally provided with a second groove 21, the inner wall of the second groove 21 is a second arc-shaped surface 22, and the first arc-shaped surface 12 is attached to the second arc-shaped surface 22. Through the close fit of the first arc-shaped surface 12 and the second arc-shaped surface 22, good air tightness between the male union head 1 and the female union head 2 can be ensured. Because the first arc-shaped surface 12 and the second arc-shaped surface 22 can change in cooling and heating during long-term use, the tightness of the connection is affected to a certain extent. Therefore, in the utility model discloses well first convex part 11 is equipped with third recess 13 on keeping away from the terminal surface of mother's nonyl by head 2, and third recess 13 is the annular setting to the cross-section of third recess 13 is trapezoidal. Be equipped with first sealing washer 33 on the inner wall of nonyl by nut 3, first sealing washer 33 is the annular setting to first sealing washer 33's cross-section is trapezoidal, and first sealing washer 33 sets up in third recess 13. The sealing performance is further improved by the provision of the first seal ring 33.

In addition, the utility model is provided with a labyrinth seal structure 5 at the joint of the male union head 1 and the female union head 2, the labyrinth seal structure 5 comprises a labyrinth seal ring body I51, a labyrinth seal ring body II 52, a first seal body 53 and a second seal body 54, the labyrinth seal ring body I51 is in a cylinder shape with two open ends, and two ends of a first labyrinth seal body 51 are respectively arranged in one end of the male union head 1 and one end of the female union head 2, a second labyrinth seal body 52 is arranged on the outer wall of the first labyrinth seal body 51, and a second labyrinth seal body 52 is positioned between the end surface of the male union head 1 and the end surface of the female union head 2, a first seal body 53 and a second seal body 54 are respectively arranged on the upper end surface and the lower end surface of the second labyrinth seal body 52, the first seal body 53 is arranged in the end surface of the female union head 2, and the second seal body 54 is arranged in the end surface of the male union head 1. The end of the second labyrinth seal body 52 far away from the first labyrinth seal body 51 is provided with a wedge 521. The inner wall of the end part of the male union head 1 close to the female union head 2 is provided with a fourth groove 14, the inner wall of the end part of the female union head 2 close to the male union head 1 is provided with a fifth groove 23, and two ends of a labyrinth seal ring body 51 are respectively arranged in the fourth groove 14 and the fifth groove 23. A group of sixth grooves 15 are formed in the inner walls of the fourth groove 14 and the fifth groove 23, a group of seventh grooves 511 are formed in the outer wall of the first labyrinth seal body 51, the sixth grooves 15 and the seventh grooves 511 are arranged in a one-to-one manner, and second seal rings 16 are arranged in the sixth grooves 15 and the seventh grooves 511. The labyrinth seal structure 5 arranged above belongs to the end face of the male union head 1 close to the female union head 2, and can prevent the leakage of the joint through the seal connection at the end face. In the mounting process, the first seal body 53 and the second seal body 54 have an isosceles trapezoidal cross section for easy mounting.

The utility model discloses it is nonby the first through-hole 32 department of 3 outer walls of nut to be equipped with screw thread fixing base 34, is equipped with nut end cap 35 on the screw thread fixing base 34, nut end cap 35 and the 34 threaded connection of screw thread fixing base. The valve core 43 is plugged through the nut plug 35, so that the valve core 43 can be prevented from being damaged, and certain sealing performance is provided.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. A weldless combined type double-metal high-pressure union comprises a male union head (1), a female union head (2) and a union nut (3), wherein one end of the male union head (1) is arranged in one end of the female union head (2), and the male union head (1) and the female union head (2) are connected through the union nut (3); the method is characterized in that: the union is equipped with first recess (31) by nut (3) near the one end inner wall of the union by head (2), the cross-section of first recess (31) is half-circular arc, be equipped with in first recess (31) and be in union by inflatable tyre (4), it is in union by inflatable tyre (4) including being in union by inflatable tyre body (41), metal connecting plate (42) and valve core (43), the cross-section of union by inflatable tyre body (41) is half-circular arc to be in union by the inner wall of inflatable tyre body (41) is the plane, metal connecting plate (42) are fixed to be set up on the inner wall of union by inflatable tyre body (41), be equipped with the screw thread on the inner wall of metal connecting plate (42), metal connecting plate (42) and the end threaded connection of union by head (2), it is in first recess (31) by inflatable tyre body (41) to be in union, valve core (43) sets up on being in union by inflatable tyre body (41), and the union is inflated or deflated by an inflating tire body (41) through a valve core (43), a first through hole (32) is arranged in the radial direction of the union nut (3), the valve core (43) is arranged in the first through hole (32), and the inflating and deflating end part of the valve core (43) extends out of the first through hole (32).

2. The weldless combination dual metal high pressure union of claim 1, wherein: public nonyl is equipped with first convex part (11) by head (1) near the tip of female nonyl by head (2), the outer wall of first convex part (11) is first arcwall face (12), female nonyl is equipped with second recess (21) by head (2) near the tip of public nonyl by head (1), the inner wall of second recess (21) is second arcwall face (22), first arcwall face (12) and second arcwall face (22) laminating.

3. The weldless combination dual metal high pressure union of claim 2, wherein: the end face, away from the union head (2), of the first convex part (11) is provided with a third groove (13), the third groove (13) is annularly arranged, and the cross section of the third groove (13) is trapezoidal.

4. The weldless combination dual metal high pressure union of claim 3, wherein: the nut is characterized in that a first sealing ring (33) is arranged on the inner wall of the nut (3), the first sealing ring (33) is arranged in an annular mode, the cross section of the first sealing ring (33) is trapezoidal, and the first sealing ring (33) is arranged in the third groove (13).

5. The weldless combination dual metal high pressure union of claim 1, wherein: the labyrinth seal structure comprises a labyrinth seal structure (5) arranged at the joint of a male union head (1) and a female union head (2), wherein the labyrinth seal structure (5) comprises a labyrinth seal ring body I (51), a labyrinth seal ring body II (52), a first seal body (53) and a second seal body (54), the labyrinth seal ring body I (51) is cylindrical, two ends of the labyrinth seal ring body I (51) are respectively arranged in one end of the male union head (1) and one end of the female union head (2), the labyrinth seal ring body II (52) is arranged on the outer wall of the labyrinth seal ring body I (51), the labyrinth seal ring body II (52) is positioned between the end face of the male union head (1) and the end face of the female union head (2), the first seal body (53) and the second seal body (54) are respectively arranged on the upper end face and the lower end face of the labyrinth seal ring body II (52), the first sealing body (53) is arranged in the end face of the female union head (2), and the second sealing body (54) is arranged in the end face of the male union head (1).

6. The weldless combination dual metal high pressure union of claim 5, wherein: public nonyl is close to female nonyl by head (1) and is equipped with fourth recess (14) on the tip inner wall by head (2), female nonyl is close to being equipped with fifth recess (23) on the tip inner wall of public nonyl by head (1) by head (2), the both ends of labyrinth seal body (51) set up respectively in fourth recess (14) and fifth recess (23).

7. The weldless combination dual metal high pressure union of claim 6, wherein: a group of sixth grooves (15) are formed in the inner walls of the fourth groove (14) and the fifth groove (23), a group of seventh grooves (511) are formed in the outer wall of the first labyrinth seal ring body (51), the sixth grooves (15) and the seventh grooves (511) are arranged in a one-to-one mode, and second seal rings (16) are arranged in the sixth grooves (15) and the seventh grooves (511).

8. The weldless combination dual metal high pressure union of claim 1, wherein: the nut is equipped with screw thread fixing base (34) by first through-hole (32) department of nut (3) outer wall on the whole, be equipped with nut end cap (35) on screw thread fixing base (34), nut end cap (35) and screw thread fixing base (34) threaded connection.

9. The weldless combination dual metal high pressure union of claim 5, wherein: the end part, far away from the first labyrinth seal ring body (51), of the second labyrinth seal ring body (52) is provided with a wedge-shaped part (521).

10. The weldless combination dual metal high pressure union of claim 5, wherein: the cross sections of the first sealing body (53) and the second sealing body (54) are isosceles trapezoids.

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