Ore pulp pipeline connection compensator

Abstract

The utility model relates to an ore pulp pipeline connection compensator in the technical field of pipeline compensation, which comprises a pipe A and a pipe B. A flange A and a flange B are respectively sleeved and fixed on the outer walls of the corresponding pipe ends of the pipe A and the pipe B, and a deformable expansion joint is connected between the flange A and the flange B; the corresponding pipe ends of the pipe A and the pipe B extend to be close to and inserted into the telescopic joint, and wall surface gaps are formed between the telescopic joint and the corresponding outer pipe walls of the pipe A and the pipe B respectively; according to the ore pulp pipeline connection compensator, the abrasion influence of pulp can be reduced while the sealing and compensation effects are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline compensation, in particular to a slurry pipeline connecting compensator. Background Art

[0002] As is known, when the slurry flows, the slurry will cause rapid wear on the pipe, so the pipe for conveying the slurry is generally made of wear-resistant pipe; because the slurry pump needs to be frequently repaired, if the pipe connected to the slurry pump is rigidly connected with the flange, the docking accuracy requirement during installation is high, otherwise the flange surface cannot be centered or opened, which will cause difficulties in maintenance and disassembly. Therefore, some users add flexible pipe joints to the pipes. However, since the drum-shaped rubber parts of the flexible pipe joints are not wear-resistant, the service life is short;

[0003] Pipe compensators and flexible pipe joints also have the characteristics of absorbing axial, lateral and angular deformation of pipelines. Existing pipeline compensators mainly have two structures. One structure is a sleeve-shaped structure as shown in the pipeline compensator with announcement number CN1007654B. The inner pipe and the outer pipe are sleeved and can move relative to each other axially. The inner pipe and the outer pipe are slidingly sealed by the sealing ring installed between the inner pipe and the outer pipe. The disadvantage is that the radial adjustability of the inner pipe and the outer pipe is very small when they are installed. When there is an installation deviation, the compensation installation effect is poor; the other structure is a bellows-shaped structure, which is most similar to the flexible pipe joint. The bellows is installed and inserted between the two sections of the pipe, which can deform axially and radially, and can even bend to a certain extent, which is very conducive to installation and use compensation; however, generally, because of the deformability of bellows, most of them are made of materials with low hardness, high flexibility and elasticity, such as rubber, plastic, etc. When the pipeline is used to transmit slurries with solid particles such as ore slurry, the bellows are easily worn, thereby causing the service life of the bellows to decrease and cause rupture and leakage. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses a slurry pipeline connecting compensator, which can reduce the wear effect of slurry while ensuring the sealing and compensation effects.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A slurry pipeline connecting compensator comprises a pipe A and a pipe B, wherein the outer walls of the pipe ends corresponding to the pipe A and the pipe B are respectively sleeved and fixed with flanges A and flange B, and a deformable expansion joint is connected between the flange A and the flange B; the pipe ends corresponding to the pipe A and the pipe B are extended and inserted into the expansion joint, so that there is a wall gap between the expansion joint and the outer pipe walls corresponding to the pipe A and the pipe B respectively.

[0007] Furthermore, the corresponding tube ends of the tube A and the tube B have an end surface gap.

[0008] Furthermore, when the expansion joint is in a naturally contracted state, the end faces of the tube ends corresponding to the tube A and the tube B have an end face gap of less than 5 mm; when the expansion joint is in a state of maximum extension, the end face gap is less than or equal to 1.5 times the wall gap.

[0009] Furthermore, the tube A has a sleeve portion which is inserted into the gap of the corresponding tube end of the tube B.

[0010] Furthermore, a step surface corresponding to the end surface of tube B is provided between the sleeve portion and the main body of tube A.

[0011] Furthermore, the expansion joint is configured as a bellows, or an elastic tube whose entire middle portion expands and contracts outwards when axially compressed or extended.

[0012] Furthermore, both ends of the telescopic joint are covered with press-fit flanges, and both end walls of the telescopic joint are turned outward to the outer flange surfaces of the corresponding press-fit flanges to form sealing press edges, and the flange A and flange B are connected to the corresponding press-fit flanges with corresponding bolts.

[0013] Furthermore, an annular groove is provided on the outer flange surface of the press-fit flange, and a protrusion corresponding to the annular groove is provided on the sealing press edge.

[0014] Furthermore, the front end of the tube B is configured as a detachable tube section, and the flange B is sleeved and fixed to the rear end outer wall of the tube section.

[0015] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0016] The slurry pipeline connecting compensator disclosed by the utility model is designed to connect the deformable expansion joint between the two pipelines for sealing and compensation. The wear-resistant pipe A and pipe B are extended close to each other and inserted into the expansion joint, so as to play a role of diversion and reduce the direct contact between the high-speed flowing slurry and the expansion joint. As for the slurry water flowing out from the gap between the pipe A and the pipe B, it can be kept in the wall gap, that is, it cannot leak out, and the flow rate can be reduced or dead water can be formed, so as to protect the expansion joint from wear, thereby greatly improving the service life of the compensator of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of a second embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a third embodiment of the present utility model.

[0020] In the figure: 1, pipe A; 101, sleeve part; 2, flange A; 3, expansion joint; 301, sealing edge; 4, flange B; 5, pipe B; 501, joint pipe part; 6, press-fit flange; 7, wall gap; 8, end face gap. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction: Embodiment 1:

[0022] Combined with Figure 1 The slurry pipeline connection compensator comprises a pipe A1 and a pipe B5, and the outer walls of the corresponding pipe ends of the pipe A1 and the pipe B5 are respectively sleeved and fixed with flanges A2 and flange B4, and a deformable expansion joint 3 is connected between flange A2 and flange B4; specifically, the expansion joint 3 can be set as a bellows, or an elastic tube whose overall middle part expands and contracts when axially compressed or stretched, so as to ensure axial, radial and bending deformability; as needed, both ends of the expansion joint 3 are covered with press-fit flanges 6, and the two end walls of the expansion joint 3 are turned outward to the outer flange surface of the corresponding press-fit flange 6 to form a sealing edge 301, and the flange A2 and the flange B4 are connected with the corresponding press-fit flange 6 with corresponding bolts, and the expansion joint 3 forms a sealing edge 301 as a whole, and the sealing edge 301 is compressed by the flange to achieve a sealing effect; in addition, the outer flange surface of the press-fit flange 6 is provided with an annular groove, and the sealing edge 301 is provided with a protrusion corresponding to the annular groove to prevent the end of the expansion joint 3 from radially moving and causing leakage;

[0023] The pipe ends corresponding to pipe A1 and pipe B5 extend close to and are inserted into the expansion joint 3, so that a wall gap 7 is provided between the expansion joint 3 and the outer pipe walls corresponding to pipe A1 and pipe B5, respectively. The pipe section inserted into the expansion joint 3 can play a role in guiding the flow, thereby reducing the direct contact between the high-speed flowing slurry and the expansion joint 3. Of course, in order to retain the compensation performance of the expansion joint 3, there must be an active gap between pipe A1 and pipe B5, which causes the slurry to flow out. However, the outflowing slurry can be kept in the wall gap 7, that is, it cannot leak out, and the flow rate can also be reduced or local dead water can be formed to protect the expansion joint 3 from wear. According to needs, the pipe ends corresponding to pipe A1 and pipe B5 have an end face gap 8, specifically In the naturally contracted state of the expansion joint 3, the end faces of the corresponding tube ends of the tubes A1 and B5 have an end face gap 8 of less than 5 mm. The smaller the contact gap between the high-speed slurry and the expansion joint 3, the better the wear protection effect. In addition, in the maximum elongation state of the expansion joint 3, the end face gap 8 is less than or equal to 1.5 times the wall gap 7. The end face gap 8 will increase with the elongation of the expansion joint 3, thereby exposing more parts of the expansion joint 3 to the high-speed flowing slurry. However, as long as the wall gap 7 is also maintained at a larger distance, rather than directly attached to the walls of the tubes A1 and B5, the slurry entering the wall gap 7 will inevitably reduce the flow rate due to the dead angle of the space, thereby reducing the wear on the expansion joint 3.

[0024] To implement the slurry pipeline connection compensator described in the utility model, it is only necessary to move flange A2 and flange B4 away from the corresponding end faces of pipe A1 and pipe B5 for a certain distance, and then weld and fix them. Then, the expansion joint 3 is installed and fixed between flange A2 and flange B4 by pressing the flange 6. Embodiment 2:

[0025] As attached Figure 2 As shown, the difference from Example 1 is that tube A1 has a sleeve portion 101 inserted into the gap corresponding to the corresponding tube end of tube B5, and the sleeve portion 101 is integrally or detachably connected to tube A1. Specifically, the entire diameter of tube A1 can be larger than tube B5, so that no matter how the expansion joint 3 is expanded and contracted, the expansion joint 3 will not be directly exposed to the high-speed slurry, and the wear protection of the expansion joint 3 is better. At the same time, the sleeve portion 101 can also have a certain limit on the radial adjustment of the expansion joint 3 to prevent excessive adjustment and cause breakage; according to needs, there is a step surface corresponding to the end face of tube B5 between the sleeve portion 101 and the main body of tube A1, that is, only the diameter of the sleeve portion 101 is larger than that of tube B5, and the diameter of the main body of tube A1 can be the same as that of tube B5. Embodiment three:

[0026] As attached Figure 3As shown, the difference from Example 2 is that the front end of the tube B5 is set as a detachable joint tube portion 501, and the flange B4 is sleeved and fixed on the rear end outer wall of the joint tube portion 501. The tube wall of the tube B5 can be fixed with a new flange by sleeve, so as to be connected with the flange B4 and the corresponding press-fit flange 6 through bolts. By changing the different lengths of the joint tube portion 501, different pipeline installation spacings can be adapted. At the same time, after the joint tube portion 501 is taken out, the maintenance space can also be increased.

[0027] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A slurry pipeline connecting compensator, comprising a pipe A (1) and a pipe B (5), wherein the outer walls of the corresponding pipe ends of the pipe A (1) and the pipe B (5) are respectively sleeved and fixed with flanges A (2) and flanges B (4), and a deformable expansion joint (3) is connected between the flanges A (2) and B (4), wherein: The corresponding pipe ends of the pipe A (1) and the pipe B (5) are extended close to and inserted into the expansion joint (3), so that a wall gap (7) is formed between the expansion joint (3) and the corresponding outer pipe walls of the pipe A (1) and the pipe B (5); both ends of the expansion joint (3) are covered with press-fit flanges (6), and both end walls of the expansion joint (3) are turned outward to the outer flange surfaces of the corresponding press-fit flanges (6) to form sealing press edges (301), and the flange A (2) and the flange B (4) are connected to the corresponding press-fit flanges (6) by corresponding bolts.

2. The slurry pipeline connecting compensator according to claim 1 is characterized in that: The corresponding pipe ends of the pipe A (1) and the pipe B (5) have an end surface gap (8).

3. The slurry pipeline connecting compensator according to claim 2 is characterized in that: When the expansion joint (3) is in a naturally contracted state, the end faces of the tube ends of the tube A (1) and the tube B (5) have an end face gap (8) of less than 5 mm; when the expansion joint (3) is in a maximum extended state, the end face gap (8) is less than or equal to 1.5 times the wall gap (7).

4. The slurry pipeline connecting compensator according to claim 1 is characterized in that: The pipe A (1) has a sleeve portion (101) which is inserted into the gap of the corresponding pipe end of the pipe B (5).

5. The slurry pipeline connecting compensator according to claim 4 is characterized in that: A step surface corresponding to the end surface of the tube B (5) is provided between the sleeve portion (101) and the main body of the tube A (1).

6. The slurry pipeline connecting compensator according to claim 1 is characterized in that: The expansion joint (3) is configured as a bellows, or an elastic tube whose entire middle portion expands and contracts outwards when axially compressed or extended.

7. The slurry pipeline connecting compensator according to claim 6 is characterized by: The outer flange surface of the press-fit flange (6) is provided with an annular groove, and the sealing press edge (301) is provided with a protrusion corresponding to the annular groove.

8. The slurry pipeline connecting compensator according to claim 1 is characterized in that: The front end of the tube B (5) is provided as a detachable tube section (501), and the flange B (4) is sleeved and fixed to the rear end outer wall of the tube section (501).

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