Pipe network construction transition section pipe connection structure

Abstract

The utility model relates to the technical field of transition section pipeline connection, specifically is a kind of pipe network construction transition section pipeline connection structure, including transition pipe, the both sides of transition pipe are fixedly installed with connecting assembly, and the one end of transition pipe is fixedly installed with first pipeline body by connecting assembly, and the other end of transition pipe is fixedly installed with second pipeline body by connecting assembly, and connecting assembly includes two access pipes, and two the access pipe is fixedly installed at the both ends of transition pipe;The utility model installs transition pipe between two caliber different access pipes, when working, fluid passes through first pipeline body, and when fluid is guided under the conical inner wall of transition pipe, gradually increase the flow rate of fluid, avoid the flow rate and pressure fluctuation of excessive in short time, produce greater pressure to the connecting area between first pipeline body and second pipeline body, to protect the connecting area, improve the service life of connecting area.

Description

Technical Field

[0001] This utility model relates to the field of transition section pipeline connection technology, specifically a pipeline connection structure for transition section in pipeline network construction. Background Technology

[0002] Pipeline construction refers to the entire process of building a pipeline system in a construction project to meet the needs of transporting fluids or energy such as water, gas, oil, and electricity. This process involves excavating trenches, installing pipes, and connecting fittings. Pipeline construction is widely used in various infrastructure constructions such as urban water supply, drainage, gas supply, petrochemicals, and power. Multiple pipelines need to be connected during pipeline construction.

[0003] In existing technologies, when connecting pipelines, common methods such as welding are typically used to weld multiple pipelines together. Specifically, two pipelines that need to be connected are inserted into the connection ports at both ends of the connector using a pipe connector, and the joint is welded to complete the pipeline connection. This method is also used for connecting pipelines in some transition sections. However, in the actual connection process, when the connector connects two pipelines of different diameters in the transition section, the flow velocity of the fluid changes as it passes through the transition section due to the different diameters at both ends. Especially in transition sections with large diameter changes, eddies and turbulence may occur, thereby reducing the smoothness of fluid transport within the pipe, increasing the pressure on the transition section pipeline, and affecting the service life of the transition section pipeline. Utility Model Content

[0004] The purpose of this utility model is to provide a pipeline connection structure for the transition section of pipeline construction to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is: a pipeline connection structure for a transition section in pipeline network construction, including a transition pipe, with connecting components fixedly installed on both sides of the transition pipe, a first pipeline body fixedly installed at one end of the transition pipe through the connecting components, and a second pipeline body fixedly installed at the other end of the transition pipe through the connecting components.

[0006] The connecting assembly includes two access tubes, which are fixedly installed at both ends of a transition tube. The transition tube is tapered, and a wear-resistant smooth layer is fixedly installed on the inner wall of the transition tube. Both ends of the wear-resistant smooth layer are provided with annular guide surfaces, which are in contact with one side of the two access tubes.

[0007] Preferably, the connecting assembly further includes multiple fixing plates, the inner wall of the access pipe is provided with multiple sliding grooves, each of the multiple sliding grooves is slidably installed with a fixing plate, a sealing ring is provided between the multiple fixing plates, and an extrusion unit is fixedly installed on the surface of the fixing plate.

[0008] Preferably, the extrusion unit includes multiple guide strips and an extrusion ring. The multiple guide strips are correspondingly fixedly installed on the surfaces of multiple fixed plates. The surface of the extrusion ring is provided with a threaded line. The inner wall of the access tube is provided with a threaded groove. The extrusion ring is screwed onto the inner wall of the access tube.

[0009] Preferably, a plurality of primary positioning holes are provided on one side of the access tube, a knob is fixedly installed on one side of the compression ring, a plurality of secondary positioning holes are provided on one side of the knob, the plurality of secondary positioning holes correspond to the plurality of primary positioning holes, and a locking pin is slidably installed in each of the plurality of secondary positioning holes, the locking pin being adapted to the secondary positioning hole.

[0010] Preferably, a pull block is fixedly installed at the end of each of the locking pins away from the secondary positioning hole.

[0011] Preferably, the inner wall of the extrusion ring is configured as an annular inclined surface, and the contact surface between the guide strip and the extrusion ring is configured as an arc-shaped inclined surface.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, by installing a transition pipe between two inlet pipes of different diameters, allows the fluid to gradually increase its flow rate when it passes through the first pipe body during operation, under the guidance of the conical inner wall of the transition pipe. This avoids excessive flow rate and pressure fluctuations in a short period of time, which would otherwise generate significant pressure on the connection area between the first and second pipe bodies, thus protecting the connection area and extending its service life.

[0014] 2. In this utility model, by manually rotating the knob, the extrusion ring spirals into the inner wall of the inlet pipe. The annular inclined surface of the extrusion ring, in conjunction with the arc-shaped inclined surfaces on the upper sides of the four guide strips, extrudes the corresponding fixing plates, causing the four fixing plates to gradually approach each other. The four fixing plates extrude the sealing rings, making the sealing rings adhere to the surface of the first pipe body. Through the friction between the fixing plates and the sealing rings, and the friction between the sealing rings and the first pipe body, the transition section pipe is quickly connected, improving the connection efficiency. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the connecting component in this utility model;

[0018] Figure 3 yes Figure 2 Enlarged structural diagram of region A in the middle;

[0019] Figure 4 This is a cross-sectional structural diagram of the transition tube in this utility model;

[0020] Figure 5 This is an exploded structural diagram of the connecting component in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Transition pipe; 2. Inlet pipe; 3. First pipe body; 4. Second pipe body; 5. Sealing ring; 6. Fixing plate; 7. Slide groove; 8. Guide strip; 9. Extrusion ring; 10. Locking pin; 11. Knob; 12. Pull block; 13. Wear-resistant smooth layer; 14. Primary positioning hole; 15. Secondary positioning hole; 16. Threaded wire. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0024] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below.

[0025] like Figures 1-5 As shown, a pipeline connection structure for a pipeline construction transition section includes a transition pipe 1, with connecting components fixedly installed on both sides of the transition pipe 1. A first pipeline body 3 is fixedly installed at one end of the transition pipe 1 through the connecting components, and a second pipeline body 4 is fixedly installed at the other end of the transition pipe 1 through the connecting components.

[0026] The connecting assembly includes two access pipes 2, which are fixedly installed at both ends of a transition pipe 1. The transition pipe 1 is tapered, and a wear-resistant smooth layer 13 is fixedly installed on the inner wall of the transition pipe 1. Both ends of the wear-resistant smooth layer 13 are provided with annular guide surfaces, which are attached to one side of the two access pipes 2.

[0027] With the above structure, the diameter of the first pipe body 3 is larger than that of the second pipe body 4. The inner circumference of the two inlet pipes 2 in the connecting assembly corresponds to both of them and leaves a certain gap to facilitate the insertion of the sealing ring 5. A transition pipe 1 is fixedly installed on the opposite side of the two inlet pipes 2. The smaller diameter end of the transition pipe 1 corresponds to the smaller diameter inlet pipe 2, and the larger diameter end corresponds to the larger diameter inlet pipe 2. The inside of the transition pipe 1 is set as a conical fluid channel, which can guide the fluid and give the fluid a longer buffer area when passing between the first pipe body 3 and the second pipe body 4, gradually increasing its flow rate and avoiding excessive flow rate and pressure fluctuations in a short period of time, which would cause the connection to bear additional fluid kinetic energy pressure. The wear-resistant smooth layer 13 is made of polyurethane material, which has good wear resistance and can improve the wear resistance inside the transition pipe 1 and extend its service life. The annular guide cut surfaces at both ends of the wear-resistant smooth layer 13 can guide the first pipe body 3 and the second pipe body 4 at the pipe openings where the inlet pipe 2 is inserted, further improving the smoothness of fluid delivery.

[0028] Furthermore, the connecting assembly also includes multiple fixing plates 6, multiple grooves 7 are provided on the inner wall of the access pipe 2, and fixing plates 6 are slidably installed in each of the multiple grooves 7. Sealing rings 5 ​​are provided between the multiple fixing plates 6, and extrusion units are fixedly installed on the surface of the fixing plates 6.

[0029] With the above structure, four fixing plates 6 are installed at equal intervals. The fixing plates 6 are arc-shaped and can fit against the surface of the sealing ring 5. Each fixing plate 6 is slidably installed in a corresponding groove 7. The side of the fixing plate 6 that contacts the sealing ring 5 is provided with a frosted surface, which can greatly improve the friction and make the connection area more stable.

[0030] Furthermore, the extrusion unit includes multiple guide bars 8 and extrusion rings 9. The multiple guide bars 8 are correspondingly fixedly installed on the surfaces of multiple fixed plates 6. The surface of the extrusion ring 9 is provided with threaded lines 16, and the inner wall of the access pipe 2 is provided with threaded grooves. The extrusion ring 9 is screwed onto the inner wall of the access pipe 2.

[0031] With the above structure, the extrusion ring 9 is screwed into the threaded groove on the inner wall of the inlet pipe 2 via the threaded line 16, which drives the extrusion ring 9 to rotate and extrude.

[0032] Furthermore, a plurality of primary positioning holes 14 are provided on one side of the access pipe 2, and a knob 11 is fixedly installed on one side of the compression ring 9. A plurality of secondary positioning holes 15 are provided on one side of the knob 11. The plurality of secondary positioning holes 15 correspond to the plurality of primary positioning holes 14. A locking pin 10 is slidably installed in each of the plurality of secondary positioning holes 15. The locking pin 10 is adapted to the secondary positioning hole 15.

[0033] With the above structure, the primary positioning hole 14 and the secondary positioning hole 15 are provided with four equally spaced annular openings. Each primary positioning hole 14 has a locking pin 10 slidably installed in it. The size of the locking pin 10 is the same as that of the secondary positioning hole 15. When the locking pin 10 is inserted into the secondary positioning hole 15, the knob 11 and the access tube 2 are limited and fixed.

[0034] Furthermore, pull blocks 12 are fixedly installed at the ends of the multiple locking pins 10 that are away from the secondary positioning holes 15.

[0035] With the above structure, the locking pin 10 can be easily inserted and removed via the pull block 12.

[0036] Furthermore, the inner wall of the extrusion ring 9 is configured as an annular inclined surface, and the contact surface between the guide strip 8 and the extrusion ring 9 is configured as an arc-shaped inclined surface.

[0037] With the above structure, the inclination angles of the annular inclined surface and the arc-shaped inclined surface are the same. When the extrusion ring 9 slowly enters, it will gradually guide and extrude the guide strip 8. When it is extruded through the guide surface, the pressure generated during the extrusion is more even, so that multiple fixing plates 6 can be subjected to more even pressure, thereby making the pressing force of the sealing ring 5 in the bonding area more uniform and strengthening its connection sealing performance.

[0038] Working Principle: When using the device, firstly, the first pipe body 3 and the second pipe body 4 are pre-laid in the area where the transition section construction is required. Then, the device is taken out, and the two sealing rings 5 ​​of different sizes inside the device are respectively fitted onto the surfaces of the first pipe body 3 and the second pipe body 4 according to their corresponding sizes. Then, one of the corresponding sizes of the knob 11 and the compression ring 9 are fitted onto one end of the first pipe body 3. Next, the corresponding connecting pipe 2 is fitted into the surface of the first pipe body 3. After it is fitted to the maximum position, the compression ring 9 is pushed by hand to insert into the inner wall of the connecting pipe 2, and at the same time, the knob 11 is manually rotated to make the compression ring 9 spiral into the inner wall of the connecting pipe 2. At this time, the annular inclined surface of the compression ring 9, together with the arc-shaped inclined surface on the upper side of the four guide strips 8, compresses the corresponding fixing plate 6, so that the four fixing plates 6 gradually approach each other. The four fixing plates 6 respectively seal the sealing ring 3 and the second pipe body 4. The sealing ring 5 is squeezed to make it adhere to the surface of the first pipe body 3, sealing the connection. When the squeezing ring 9 is fully inserted into the inlet pipe 2, the knob 11 is rotated slightly left and right, and one of the pull blocks 12 is pushed by hand at the same time. The pull block 12 drives the locking pin 10 to move. When the primary positioning hole 14 is aligned with the secondary positioning hole 15, the locking pin 10 is inserted into the secondary positioning hole 15 to position the knob 11. Then the remaining locking pins 10 are inserted to position the multiple fixing plates 6. Through the friction between the fixing plate 6 and the sealing ring 5, and the friction between the sealing ring 5 and the first pipe body 3, the first pipe body 3 is fixedly installed on the inlet pipe 2 corresponding to its size. The above operation is repeated to install the second pipe body 4 on the other end of the corresponding inlet pipe 2, completing the pipe docking installation.

[0039] During operation, the fluid flows through the first pipe body 3. Under the guidance of the conical inner wall of the transition pipe 1, the fluid velocity gradually increases, avoiding excessive velocity and pressure fluctuations in a short period of time. This prevents the connection area between the first pipe body 3 and the second pipe body 4 from generating greater pressure, thereby protecting the connection area and extending its service life.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A pipeline connection structure for a transition section in pipeline network construction, comprising a transition pipe (1), characterized in that: Connecting components are fixedly installed on both sides of the transition pipe (1). A first pipe body (3) is fixedly installed at one end of the transition pipe (1) through the connecting components, and a second pipe body (4) is fixedly installed at the other end of the transition pipe (1) through the connecting components. The connecting assembly includes two access tubes (2), which are fixedly installed at both ends of a transition tube (1). The transition tube (1) is tapered, and a wear-resistant smooth layer (13) is fixedly installed on the inner wall of the transition tube (1). The two ends of the wear-resistant smooth layer (13) are provided with annular guide surfaces, which are in contact with one side of the two access tubes (2).

2. The pipeline connection structure for a transition section in pipeline construction according to claim 1, characterized in that: The connecting assembly also includes multiple fixing plates (6), and the inner wall of the access pipe (2) is provided with multiple sliding grooves (7). The fixing plates (6) are slidably installed in the multiple sliding grooves (7), and sealing rings (5) are provided between the multiple fixing plates (6). The surface of the fixing plates (6) is fixedly installed with extrusion units.

3. The pipeline connection structure for a transition section in pipeline construction according to claim 2, characterized in that: The extrusion unit includes multiple guide bars (8) and extrusion rings (9). The multiple guide bars (8) are fixedly installed on the surfaces of multiple fixed plates (6). The surface of the extrusion ring (9) is provided with a thread (16). The inner wall of the access pipe (2) is provided with a threaded groove. The extrusion ring (9) is screwed onto the inner wall of the access pipe (2).

4. The pipeline connection structure for a pipeline construction transition section according to claim 3, characterized in that: The access tube (2) has multiple primary positioning holes (14) on one side, and a knob (11) is fixedly installed on one side of the compression ring (9). The knob (11) has multiple secondary positioning holes (15) on one side. The multiple secondary positioning holes (15) correspond to the multiple primary positioning holes (14). Locking pins (10) are slidably installed in the multiple secondary positioning holes (15). The locking pins (10) are adapted to the secondary positioning holes (15).

5. The pipeline connection structure for a transition section in pipeline construction according to claim 4, characterized in that: Each of the locking pins (10) has a pull block (12) fixedly installed at the end away from the secondary positioning hole (15).

6. The pipeline connection structure for a transition section in pipeline construction according to claim 3, characterized in that: The inner wall of the extrusion ring (9) is configured as an annular inclined surface, and the contact surface between the guide strip (8) and the extrusion ring (9) is configured as an arc-shaped inclined surface.

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