Novel large-deflection compensation joint

Abstract

The utility model discloses a novel large deflection compensation joint which comprises a main pipe, first flange pieces, a compensation short pipe, first sealing pieces, second sealing pieces and second flange pieces, the first flange pieces are installed at the two ends of the main pipe, and the first flange pieces and the second flange pieces at the two ends of the compensation short pipe are installed in a butt joint mode. The first flange piece and the second flange piece are installed in a screwing-in mode through a bolt and a nut, a first sealing piece is installed between the outer side end of the first flange piece and the outer side end of the second flange piece, and a second sealing piece is installed between the main pipe and the inlet end of the compensation short pipe. A single axially-arranged sealing ring still cannot perform a better prognosis effect, so that actual use is not facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connecting piece technical field especially relates to a new formula big deflection compensation joint. BACKGROUND

[0002] Big deflection compensation joint is a kind of device for pipeline connection, with big flexible and telescopic amount, can absorb axial displacement and angular displacement in certain angle range, due to temperature change, medium flow, ground subsidence and other factors will cause pipeline axial displacement, the movable short pipe in the interior of big deflection compensation joint can slide in the body, by the adjusting effect of gland, make pipeline freely telescopic in certain range, to effectively absorb and relieve the stress caused by these displacements, keep the continuity and stability of pipeline system, by its big flexible and telescopic amount, joint can successfully overcome the offset generated by the butt joint of pipeline different axial under the premise of not affecting the overall performance of pipeline, ensure the normal connection of pipeline.

[0003] The currently commonly used structure needs the force of sealing strip to ensure the pre-tightening force of sealing ring to short pipe, to achieve better sealing effect, needs to control the cooperation of adjusting bolt and spring to complete the adjustment of pre-tightening force, this way can achieve sealing effect, but in actual use process, single axial setting sealing ring still cannot better carry out prognosis effect, is not conducive to actual use.

[0004] Therefore, it is necessary to provide a new formula big deflection compensation joint to solve the above technical problems. UTILITY MODEL CONTENT

[0005] In view of the above situation, in order to overcome the defects of prior art, the utility model provides a new formula big deflection compensation joint to solve the problem that single axial setting sealing ring still cannot better carry out prognosis effect in actual use process, is not conducive to actual use.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A new formula big deflection compensation joint, comprising: main pipe, first flange piece, compensation short pipe, first sealing piece, second sealing piece, second flange piece;

[0008] Both ends of the main pipe are provided with first flange pieces, the first flange pieces are connected with the second flange pieces at both ends of the compensation short pipe, and the first flange pieces and the second flange pieces are connected by bolts and nuts, the first flange pieces and the second flange pieces are provided with first sealing pieces between outer ends, and the main pipe and the compensation short pipe are provided with second sealing pieces between inlet ends.

[0009] In one embodiment, the first sealing member is formed by a protective ring, a through hole and a sealing gasket, the height of the protective ring is greater than the height of the first flange and the second flange after being connected, so that the first flange and the second flange are inside the protective ring, the through hole is formed in the inner wall of the protective ring, and the sealing gasket is installed on the through hole, the cross section of the sealing gasket and the protective ring is T-shaped structure, and the sealing gasket is outside the mounting bolt of the first flange and the second flange.

[0010] In one embodiment, the protective ring is formed by an elastic rubber pad structure, and the inner diameter of the protective ring is greater than the diameter of the first flange and the second flange after being extended.

[0011] In one embodiment, the sealing strip is installed at the end of the compensation short pipe in the main pipe, and the sealing strip is arranged in a half-cylindrical structure in an annular array.

[0012] In one embodiment, the second sealing member is a sealing ring structure, the cross section of the second sealing member is T-shaped structure, the inner circumferential surface of the second sealing member is provided with a sealing groove in sealing connection with the sealing strip, and the lower outer circumferential surface of the second sealing member is provided with an extrusion ring in a circular ring structure and arranged in multiple groups in up and down directions.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1), the utility model discloses a two sealing members, the first sealing member is between the connecting portion of two flanges, after the installation of the first flange and the second flange, the first sealing member is in the state of compression sealing, provides the post-protection, and the second sealing member is between the compensation short pipe and the main pipe, provides the main sealing protection, and then makes the sealing property of the whole joint more excellent.

[0015] (2), the utility model discloses that the port of the compensation short pipe is inserted into the second sealing member, so that the sealing strip and the sealing groove are in interference extrusion cooperation, and then the extrusion ring and the outer circumferential surface of the second sealing member provide pre-tightening force, so that the outer circumferential surface of the second sealing member is more tightly sealed between the main pipe and the compensation short pipe. DRAWINGS

[0016] Figure 1 It is the overall structural drawing of the utility model;

[0017] Figure 2 It is the first sealing member detail drawing of the utility model;

[0018] Figure 3 It is the second sealing member detail drawing of the utility model.

[0019] Wherein, the corresponding name of the reference sign is: main pipe 1, first flange 2, compensation short pipe 3, first sealing element 4, protective ring 41, through hole 42, sealing pad 43, second sealing element 5, sealing groove 51, extrusion ring 52, second flange 6. DETAILED DESCRIPTION

[0020] The utility model will be further explained in combination with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.

[0021] As Figures 1-2 The utility model provides a new -type big deflection compensation joint, including: main pipe 1, first flange 2, compensation short pipe 3, first sealing element 4, second sealing element 5, second flange 6,

[0022] As Figures 1-3 The both ends of main pipe 1 are equipped with first flange 2, first flange 2 is docked with the second flange 6 of both ends of compensation short pipe 3, and is installed by bolt, nut, and the first flange 2, second flange 6 are installed between first flange 2, second flange 6, and the first sealing element 4 is installed between the outer side end of first flange 2, second flange 6, and the second sealing element 5 is installed between main pipe 1 and the inlet end of compensation short pipe 3, by setting two groups of sealing elements, first sealing element 4 is between the connecting place of two flanges, and first sealing element 4 is in the state of pressure tight sealing after the installation of first flange 2, second flange 6, provides the protection of prognosis, and second sealing element 5 is between compensation short pipe 3 and main pipe 1, provides the protection of main sealing property, and then makes the sealing property of the whole joint more optimal.

[0023] Preferably, in an embodiment, as Figures 1-2 The first sealing element 4 is equipped with protective ring 41, through hole 42, sealing pad 43, the height of protective ring 41 is greater than the height after the connection of first flange 2, second flange 6, so that first flange 2, second flange 6 are inside protective ring 41, the through hole 42 is formed in the inside of protective ring 41, the inner wall at the through hole 42 is equipped with sealing pad 43, the section of sealing pad 43 and protective ring 41 is T-shaped structure, so that sealing pad 43 is at the outer side of the installation bolt of first flange 2, second flange 6, provides the sealing protection of prognosis.

[0024] Preferably, in an embodiment, the protective ring 41 is entirely by elastic rubber pad structure, and the inner diameter of the protective ring 41 is greater than the diameter of first flange 2 and second flange 6 after extension.

[0025] Preferably, in an embodiment, as Figure 3 The end of the compensation short pipe 3 in main pipe 1 is equipped with sealing strip 31, and the sealing strip 31 is a semicylindrical structure arranged in an annular array.

[0026] Preferably, in one embodiment, as shown, the second sealing element 5 is a sealing ring structure as a whole, and its cross section is a T-shaped structure. Figure 3 The inner periphery of the second sealing element 5 is provided with a sealing groove 51 connected with the sealing strip 31 in sealing manner, and the lower outer periphery of the second sealing element 5 is provided with an extrusion ring 52 in a circular ring structure, and a plurality of groups are arranged in up and down directions. In working, the port of the compensation short pipe 3 is inserted into the second sealing element 5, so that the sealing strip 31 is in interference extrusion fit with the sealing groove 51, and then the extrusion ring 52 is provided with pre-tightening force with the outer periphery of the second sealing element 5, so that the outer periphery of the second sealing element 5 is more tightly sealed with the main pipe 1 and the compensation short pipe 3.

[0027] Principle of the utility model:

[0028] In working, the two groups of sealing elements are arranged, the first sealing element 4 is arranged between the connecting part of the two flanges, and the first sealing element 4 is in compression sealing state after the first flange 2 and the second flange 6 are installed, so that the pre-after protection is provided, and the second sealing element 5 is arranged between the compensation short pipe 3 and the main pipe 1, so that the main sealing protection is provided, and then the sealing performance of the whole joint is more excellent. The port of the compensation short pipe 3 is inserted into the second sealing element 5, so that the sealing strip 31 is in interference extrusion fit with the sealing groove 51, and then the extrusion ring 52 is provided with pre-tightening force with the outer periphery of the second sealing element 5, so that the outer periphery of the second sealing element 5 is more tightly sealed with the main pipe 1 and the compensation short pipe 3.

[0029] The above embodiment is only one of the preferred embodiments of the utility model, and should not be used to limit the protection scope of the utility model. Any modification or polishing without substantial meaning made on the main design idea and spirit of the utility model, and the technical problems solved are still consistent with the utility model, and should be included in the protection scope of the utility model.

Claims

1. A new style large deflection compensation joint characterized by, Including: The main pipe, the first flange, the compensation short pipe, the first sealing element, the second sealing element, the second flange; Both ends of the main pipe are provided with the first flange, the first flange is in butt joint with the second flange at both ends of the compensation short pipe, the first flange and the second flange are screwed into installation through the bolt and the nut, the first flange and the second flange are provided with the first sealing element between the outer side ends, and the main pipe and the compensation short pipe are provided with the second sealing element between the inlet ends.

2. A new type of large deflection compensation joint according to claim 1, characterized in that, The first sealing element is provided with the protective ring, the through hole and the sealing gasket, the height of the protective ring is greater than the height of the first flange and the second flange after being connected, so that the first flange and the second flange are inside the protective ring, the through hole is formed in the inside of the protective ring, the inner wall of the through hole is provided with the sealing gasket, and the cross section of the sealing gasket and the protective ring is a T-shaped structure, so that the sealing gasket is outside the installation bolt of the first flange and the second flange.

3. A new type of large deflection compensation joint according to claim 2, characterized in that, The protective ring is entirely of the elastic rubber pad structure, and the inner diameter of the protective ring is greater than the diameter of the first flange and the second flange after being extended.

4. A new type of large deflection compensation joint according to claim 1, characterized in that, The end of the compensation short pipe in the main pipe is provided with the sealing strip, and the sealing strip is entirely of a semicylindrical structure arranged in an annular array.

5. A new type of large deflection compensation joint according to claim 1, characterized in that, The second sealing element is entirely of a sealing ring structure, and the cross section is a T-shaped structure, the inner peripheral surface of the second sealing element is provided with a sealing groove in sealing connection with the sealing strip, the lower outer peripheral surface of the second sealing element is provided with the extrusion ring, and the extrusion ring is a circular ring structure and is arranged in multiple groups in up and down.

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