Combined large-diameter expansion joint

Abstract

The utility model discloses a combined type large-caliber expansion joint, which relates to the technical field of expansion joints and comprises a plurality of straight pipes and bent pipes which are arranged in an arrayed mode, connecting rings are sleeved between two adjacent straight pipes and between the straight pipes and the bent pipes, two ends of the outer wall of each straight pipe and two ends of the outer wall of each bent pipe are respectively provided with two clamping grooves which are symmetrically arranged, and the clamping grooves are connected with the straight pipes and the bent pipes. Connecting mechanisms are arranged between the connecting rings and the clamping grooves, a plurality of first double-thread screws which are symmetrically arranged in a surrounding mode are jointly arranged between every two adjacent connecting rings in a sliding and penetrating mode, the two ends of each first double-thread screw are each sleeved with two symmetrically-arranged first bolts in a threaded mode, and the two first bolts are arranged on the two sides of the corresponding connecting ring correspondingly. According to the bent pipe, the straight pipe, the connecting ring, the first double-thread screw, the first bolt, the connecting mechanism and the elastic assembly, the bent pipe and the straight pipe can be combined and spliced according to connection requirements, and the use multifunctionality of the expansion joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a combined large-diameter expansion joint. Background Art

[0002] An expansion joint is an elastic compensation element, also commonly called a compensator. It is a flexible structure installed on a container shell or pipeline to compensate for additional stress caused by temperature difference and mechanical vibration.

[0003] After searching, the patent number CN213420236U discloses a large-diameter combined non-metallic expansion joint. The expansion joint is designed with a structure of an arc piece, an arc rubber piece, a connecting rod and a sealing end. Two flanges formed by a plurality of arc pieces are used to fix the expansion tube formed by a plurality of arc rubber pieces. The overall installation adopts a combined disassembly type, which is convenient for the overall transportation and installation of the non-metallic expansion joint. When the expansion tube formed by a plurality of arc rubber pieces is damaged, only a single arc rubber piece needs to be replaced, which reduces the cost of use and is highly practical.

[0004] The above expansion joint splices the entire expansion tube through multiple arc-shaped plates, resulting in more splicing seams. When the pressure of the material inside the expansion tube is high, the overall sealing of the expansion joint cannot be effectively guaranteed, and the expansion joint as a whole can only be used horizontally or vertically and cannot be bent and set according to installation requirements. Utility Model Content

[0005] In view of the above problems existing in the existing combined large-diameter expansion joints, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a combined large-diameter expansion joint, which solves the problem that the overall sealing of the expansion joint is poor, and that it can only be used horizontally or vertically and cannot be bent and set according to installation requirements.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A combined large-diameter expansion joint, comprising a plurality of straight pipes and curved pipes arranged in an arranged manner, a connecting ring is sleeved between two adjacent straight pipes and straight pipes and between a straight pipe and a curved pipe, two symmetrically arranged slots are provided at both ends of the outer wall of the straight pipe and the curved pipe, and a connecting mechanism is provided between the connecting ring and the slot;

[0009] A plurality of first double-headed screws symmetrically arranged around are slidably passed through two adjacent connecting rings, and two first double-headed screws are threadedly sleeved with two symmetrically arranged first bolts at both ends, and the two first bolts are respectively arranged on both sides of the connecting ring.

[0010] Preferably, the connection ring is provided with a plurality of first through holes inside thereof for cooperating with the first double-headed screw to pass through.

[0011] Preferably, the connecting mechanism includes a card block, and two symmetrically arranged grooves are provided on both sides of the inner wall of the connecting ring. The card block is located in the groove, and an elastic component is provided between the card block and the inner wall of the groove. The end of the card block is inserted into the card slot, and the card block is a wedge-shaped block.

[0012] Preferably, the elastic component includes a slide plate, and slide grooves are provided on both sides of the inner wall of the groove. The slide plate is slidably arranged in the slide groove and is fixedly connected to the inner wall of the slide groove through a spring.

[0013] Furthermore, flange rings are slidably sleeved on the outer sides of the two straight tubes that are far away from each other, a retaining ring is fixedly provided on the inner wall of the flange ring, the retaining ring is in contact and cooperate with the straight tube, a plurality of thread grooves are provided on the outer wall of the connecting ring, a second double-headed screw is slidably penetrated inside the flange ring, the bottom thread of the second double-headed screw is arranged in the thread groove, and two second bolts are provided on the upper thread sleeve of the second double-headed screw, and the second bolts are arranged on both sides of the flange ring.

[0014] Preferably, a plurality of second through holes matching the second double-headed screws are provided inside the flange ring.

[0015] Preferably, the pipe openings of the straight pipe and the curved pipe are both provided with a plurality of positioning grooves which are symmetrically arranged around the pipe, positioning rods are inserted into the positioning grooves, and the positioning rods are fixedly connected to the retaining ring.

[0016] Preferably, a sealing ring is fixedly embedded in the inner wall of the flange ring, and the sealing ring is in contact and fit with the pipe wall of the straight pipe.

[0017] Preferably, the cross section of the slide plate is rectangular.

[0018] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0019] 1. The utility model can combine and splice the bent pipe and the straight pipe according to the connection requirements through the bent pipe, the straight pipe, the connecting ring, the first double-headed screw, the first bolt and the connecting mechanism and the elastic component, thereby improving the versatility of the expansion joint.

[0020] 2. The utility model, through the intuition, curved pipe, flange ring, retaining ring, positioning rod, positioning groove, sealing ring, second double-headed screw and second bolt, can combine the curved pipe and the straight pipe to facilitate the connection of the combined pipeline with external equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 For the utility model Figure 1 A magnified schematic diagram of part A;

[0024] Figure 3 For the utility model Figure 1 A magnified schematic diagram of part B;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the clamping block and the sliding plate of the utility model.

[0026] Description of reference numerals:

[0027] 1. Straight pipe; 2. Bend pipe; 3. Connecting ring; 4. First double-headed screw; 5. First bolt; 6. Block; 7. Slide plate; 8. Spring; 9. Flange ring; 10. Retaining ring; 11. Second double-headed screw; 12. Second bolt; 13. Positioning groove; 14. Positioning rod; 15. Sealing ring. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The utility model embodiment discloses a combined large-diameter expansion joint.

[0030] Example 1

[0031] The utility model provides Figure 1-4 A combined large-diameter expansion joint shown in the figure includes a plurality of straight pipes 1 and curved pipes 2 arranged in an arranged manner, a connecting ring 3 is commonly sleeved between two adjacent straight pipes 1 and straight pipes 1, and between the straight pipe 1 and the curved pipe 2, two symmetrically arranged slots are provided at both ends of the outer walls of the straight pipe 1 and the curved pipe 2, a plurality of first double-headed screws 4 symmetrically arranged are commonly slidably penetrated between two adjacent connecting rings 3, a plurality of first through holes cooperating with the first double-headed screws 4 are provided inside the connecting ring 3, two symmetrically arranged first bolts 5 are threadedly sleeved at both ends of the first double-headed screw 4, and the two first bolts 5 are respectively provided on both sides of the connecting ring 3.

[0032] Before using the expansion joint, according to the installation position and installation angle of the expansion joint, multiple straight pipes 1 and bent pipes 2 can be staggered and matched, and the connecting ring 3 is sleeved between two adjacent straight pipes 2 or between a straight pipe 1 and a bent pipe 2, and the connecting ring 3 is fixed to the straight pipe 1 and the bent pipe 2, so that the expansion joint is integrally formed, the versatility of the expansion joint is improved, and the expansion joint is easy to be combined and formed, and the convenience of use is improved.

[0033] Example 2

[0034] Embodiment 2 is based on Embodiment 1 in order to be able to connect the connecting ring 3 with the straight pipe 1 or the curved pipe 2, such as Figure 1-2 and Figure 4 As shown, a connecting mechanism is provided between the connecting ring 3 and the slot, and the connecting mechanism includes a card block 6. Two symmetrically arranged grooves are provided on both sides of the inner wall of the connecting ring 3. The card block 6 is located in the groove, and an elastic component is provided between the card block 6 and the inner wall of the groove. The end of the card block 6 is inserted into the slot, and the card block 6 is a wedge-shaped block. The elastic component includes a slide plate 7. Slide grooves are provided on both sides of the inner wall of the groove. The slide plate 7 is slidably arranged in the slide groove and is fixedly connected to the inner wall of the slide groove by a spring 8. The cross-section of the slide plate 7 is rectangular.

[0035] Before fixing the position of the connecting ring 3, fix the connecting ring 3, and bring the straight pipe 1 and the curved pipe 2 that need to be connected to the connecting ring 3 close to and insert into the connecting ring 3. Since the side wall of the clamping block 6 is arranged in an inclined surface, when the straight pipe 1 and the curved pipe 2 contact the clamping block 6, the clamping block 6 is pushed and drives the slide plate 7 to squeeze the spring 8 in the slide groove, so that the clamping block 6 enters the groove. When the outer wall of the straight pipe 1 and the curved pipe 2 contact the inner wall of the connecting ring 3, the elastic force of the spring 8 makes the clamping block 6 inserted into the clamping groove, and the connecting ring 3 is connected to the straight pipe 1 and the curved pipe 2. Subsequently, the first double-headed screw 4 and the first bolt 5 are cooperated and fixed to complete the combined splicing of the expansion joint body.

[0036] Example 3

[0037] Embodiment 3 is based on Embodiments 1-2 so that the expansion joint body can be stably connected to the external pipeline after assembly. Figure 1 and Figure 3As shown, flange rings 9 are slidably sleeved on the outer sides of the two straight pipes 1 that are far away from each other, and a sealing ring 15 is fixedly embedded in the inner wall of the flange ring 9. The sealing ring 15 contacts and cooperates with the pipe wall of the straight pipe 1. A retaining ring 10 is fixedly provided on the inner wall of the flange ring 9. The pipe openings of the straight pipe 1 and the bent pipe 2 are provided with a plurality of positioning grooves 13 that are symmetrically arranged around. A positioning rod 14 is inserted in the positioning groove 13. The positioning rod 14 is fixedly connected to the retaining ring 10. A plurality of second through holes that match the second double-headed screw 11 are provided inside the flange ring 9. The retaining ring 10 contacts and cooperates with the straight pipe 1. A plurality of threaded grooves are provided on the outer wall of the connecting ring 3. A second double-headed screw 11 is slidably penetrated inside the flange ring 9. A plurality of second through holes that match the second double-headed screw 11 are provided inside the flange ring 9. The bottom thread of the second double-headed screw 11 is arranged in the threaded groove. The upper end thread of the second double-headed screw 11 is sleeved with two second bolts 12. The second bolts 12 are arranged on both sides of the flange ring 9.

[0038] After the expansion joint body is assembled, the flange ring 9 can be put on the outside of the straight pipe 1, and the retaining ring 10 can be made in contact with the straight pipe 1. At this time, the positioning rod 14 is inserted into the positioning groove 13 to fix the position of the flange ring 9. At this time, under the setting of the sealing ring 15, the sealing between the flange ring 9 and the straight pipe 1 is guaranteed. Finally, through the connection of the second double-headed screw 11 and the second bolt 12, the flange ring 9 can be connected to the connecting ring 3 and the expansion joint body to ensure that the collision body as a whole can be used stably.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A combined large-diameter expansion joint, comprising a plurality of straight pipes (1) and curved pipes (2) arranged in a plurality of sections, characterized in that: A connecting ring (3) is commonly sleeved between two adjacent straight tubes (1) and between the straight tube (1) and the curved tube (2); two symmetrically arranged slots are provided at both ends of the outer walls of the straight tube (1) and the curved tube (2); and a connecting mechanism is provided between the connecting ring (3) and the slot; A plurality of first double-headed screw rods (4) symmetrically arranged around and slidably pass through two adjacent connecting rings (3), two ends of the first double-headed screw rods (4) are threadedly sleeved with two symmetrically arranged first bolts (5), and the two first bolts (5) are respectively arranged on both sides of the connecting ring (3).

2. The combined large-diameter expansion joint according to claim 1, characterized in that: The connection ring (3) is provided with a plurality of first through holes inside thereof, which are matched with the first double-headed screw rod (4) to pass through.

3. The combined large-diameter expansion joint according to claim 1, characterized in that: The connection mechanism comprises a clamping block (6), two symmetrically arranged grooves are provided on both sides of the inner wall of the connection ring (3), the clamping block (6) is located in the groove, and an elastic component is provided between the clamping block (6) and the inner wall of the groove, the end of the clamping block (6) is inserted into the clamping groove, and the clamping block (6) is a wedge-shaped block.

4. The combined large-diameter expansion joint according to claim 3 is characterized in that: The elastic component comprises a slide plate (7), and slide grooves are provided on both sides of the inner wall of the groove. The slide plate (7) is slidably arranged in the slide groove and is fixedly connected to the inner wall of the slide groove via a spring (8).

5. The combined large-diameter expansion joint according to claim 1, characterized in that: The outer sides of the two straight tubes (1) that are far away from each other are both slidably sleeved with flange rings (9), the inner walls of the flange rings (9) are fixedly sleeved with retaining rings (10), the retaining rings (10) are in contact with and cooperate with the straight tubes (1), the outer wall of the connecting ring (3) is provided with a plurality of thread grooves, a second double-headed screw (11) is slidably penetrated inside the flange ring (9), the bottom thread of the second double-headed screw (11) is arranged in the thread groove, the upper end thread sleeve of the second double-headed screw (11) is sleeved with two second bolts (12), and the second bolts (12) are arranged on both sides of the flange ring (9).

6. The combined large-diameter expansion joint according to claim 5, characterized in that: The flange ring (9) is provided with a plurality of second through holes inside thereof for matching with the second double-headed screw rods (11).

7. The combined large-diameter expansion joint according to claim 1, characterized in that: The pipe openings of the straight pipe (1) and the curved pipe (2) are both provided with a plurality of positioning grooves (13) arranged in a symmetrical manner around the pipe. Positioning rods (14) are inserted into the positioning grooves (13). The positioning rods (14) are fixedly connected to the retaining ring (10).

8. The combined large-diameter expansion joint according to claim 5, characterized in that: A sealing ring (15) is fixedly embedded in the inner wall of the flange ring (9), and the sealing ring (15) is in contact with the wall of the straight pipe (1).

9. The combined large-diameter expansion joint according to claim 4, characterized in that: The cross section of the slide plate (7) is rectangular.

Images