A reducing pipe with same thickness of inner and outer walls

By designing reducers with the same inner and outer wall thickness and using structures such as flanges, fixing ears, auxiliary snap fasteners, and locking rings, the problems of low strength and poor sealing at the reducer connection are solved, achieving a stable and sealed connection effect.

CN224315682UActive Publication Date: 2026-06-02YINGANG PIPELINE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YINGANG PIPELINE MFG CO LTD
Filing Date
2025-06-18
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing reducing pipe connection methods result in low joint strength, poor sealing, easy liquid leakage, and inconvenience for direct connection.

Method used

The design incorporates reducing pipes with the same inner and outer wall thickness, and employs structures such as flanges, fixing ears, auxiliary clips, and locking rings. Sealing and stable fixing are achieved through screws, pins, and locking connections.

Benefits of technology

It improves the stability and sealing of reducer connections, ensuring that the connection is less prone to leakage and enhancing the strength and sealing effect of the connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of different diameter pipes of same inner and outer wall thickness, it is related to different diameter pipe technical field, including first different diameter pipe and second different diameter pipe, the top of one side of first different diameter pipe is fixedly connected with first connection flange, the surface of one side of first connection flange is equipped with first connection sealing hole, the top edge of one side of first connection flange is fixedly connected with first fixed lug, the surface of one side of first fixed lug is equipped with first fixed bolt hole, the top of one side of second different diameter pipe is fixedly installed with second connection flange. When being connected by setting first different diameter pipe small diameter end, by the alignment operation between first connection flange and second connection flange, the alignment operation of first connection sealing hole and second connection sealing hole is realized at this time, screw is installed inside first connection sealing hole and second connection sealing hole, the sealing connection of first different diameter pipe and second different diameter pipe is realized.
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Description

Technical Field

[0001] This utility model relates to the field of reducing pipe technology, and in particular to a reducing pipe with the same inner and outer wall thickness. Background Technology

[0002] In the petrochemical industry, pipeline transportation is indispensable. If two pipes to be connected have different diameters, it's impossible to weld them together precisely and achieve an effective seal. In such cases, a reducer can be used. Currently, the common method for reducing connections is to thread the existing pipe onto the reducer. This method results in low joint strength and leakage of internal liquid, reducing its effectiveness. Traditional methods also compromise sealing, and the reducer is not convenient for direct connection. Therefore, we have redesigned a reducer with the same inner and outer wall thickness. Utility Model Content

[0003] The purpose of this invention is to provide a reducing pipe with the same inner and outer wall thickness.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a reducing pipe with the same inner and outer wall thickness, including a first reducing pipe and a second reducing pipe, a first connecting flange is fixedly connected to one top side of the first reducing pipe, a first connecting sealing hole is opened on one side surface of the first connecting flange, a first fixing lug is fixedly connected to one edge of one top side of the first connecting flange, a first fixing pin hole is opened on one side surface of the first fixing lug, a second connecting flange is fixedly installed to one top side of the second reducing pipe, a second connecting sealing hole is opened on one side surface of the second connecting flange, a second fixing lug is fixedly connected to one top side of the second connecting flange, and a second fixing pin hole is opened on one side surface of the second fixing lug.

[0005] Preferably, a side auxiliary latch is detachably installed on the side surface of the first connecting flange near the first fixing lug, and a third fixing pin hole is opened on the top surface of one side of the side auxiliary latch, and a pin limiting groove is opened on the back surface of one side of the side auxiliary latch.

[0006] Preferably, the positions of the first connecting sealing hole and the second connecting sealing hole correspond one-to-one, and the cross-sectional diameters of the first connecting sealing hole and the second connecting sealing hole are the same. The positions of the first fixing pin hole and the second fixing pin hole also correspond one-to-one, and the cross-sectional diameters of the first fixing pin hole and the second fixing pin hole are the same. The connection relationship between the pin limiting groove and the first fixing ear is a movable snap-fit. The connection relationship between the pin limiting groove and the second fixing ear is a movable snap-fit. The third fixing pin hole penetrates the top and bottom ends of the side auxiliary buckle. The positions of the third fixing pin hole and the first fixing pin hole correspond one-to-one, and the cross-sectional diameters of the third fixing pin hole and the first fixing pin hole are the same.

[0007] Preferably, a sealing ring is detachably installed on the top of the side of the first reducer away from the first connecting flange. A snap-fit ​​sleeve is fixedly connected to the top surface of one side of the sealing ring. A locking ring is detachably installed on the outer wall surface of one side of the snap-fit ​​sleeve. A locking plate is fixedly connected to the top of one side of the locking ring. A locking hole is provided on one side of the locking plate.

[0008] Preferably, there are two snap-fit ​​rings, which are symmetrically distributed on the top surfaces of both sides of the sealing connection ring. The snap-fit ​​rings are connected to the first reducer in a movable snap-fit ​​manner, and the snap-fit ​​rings are connected to the second reducer in a movable snap-fit ​​manner.

[0009] Preferably, the cross-sectional diameter of the locking connecting ring is larger than the cross-sectional diameter of the snap-fit ​​sleeve ring, the connection relationship between the locking connecting ring and the snap-fit ​​sleeve ring is a movable sleeve, the locking connecting discs are distributed on both top sides of the locking connecting ring, and locking fixing holes are opened on the surface of both locking connecting discs, and the positions of the locking fixing holes on the surface of the two locking connecting discs correspond one-to-one.

[0010] Compared with related technologies, the reducer with the same inner and outer wall thickness provided by this utility model has the following advantages:

[0011] 1. This utility model provides a reducer with the same inner and outer wall thickness. When connecting the smaller diameter end of the first reducer, the alignment between the first and second connecting flanges is achieved through the alignment of the first and second connecting sealing holes. Screws are installed inside the first and second connecting sealing holes to achieve a sealed connection between the first and second reducers. The first and second fixing ears are directly wrapped by a side auxiliary buckle. The first and second fixing ears are directly inserted into the pin limiting groove. The third fixing pin hole is aligned with the first fixing pin hole. The direct alignment between the first and second fixing pin holes allows for the insertion of a pin rod inside the third fixing pin hole, further tightening the sealing buckle between the first and second connecting flanges and improving the stability of the connection between the first and second reducers.

[0012] 2. This utility model provides a reducer with the same inner and outer wall thickness. When connecting the large-diameter end of the first reducer, the first and second reducers are directly snapped into the snap-fit ​​rings on both sides of the sealing connection ring by a pin. A locking connection ring is provided on the surface of each snap-fit ​​ring. The locking connection ring directly fits onto the surface of the snap-fit ​​ring. By installing screws in the locking holes on the surface of the locking connection ring, the connection between the snap-fit ​​ring and the first reducer is locked, further ensuring the connection stability between the first reducer and the snap-fit ​​ring. The same principle applies to the connection locking operation between the second reducer and the snap-fit ​​ring, improving the connection sealing performance of the device. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure after the small diameter end of the reducer of this utility model is connected;

[0015] Figure 3 This is a schematic diagram of the disassembled structure of the large-diameter end connection of the reducer of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure after the large-diameter end of the reducer of this utility model is connected.

[0017] The following are the labels in the diagram: 1. First reducer; 2. Second reducer; 3. First connecting flange; 4. First connecting sealing hole; 5. First fixing lug; 6. First fixing pin hole; 7. Second connecting flange; 8. Second connecting sealing hole; 9. Second fixing lug; 10. Second fixing pin hole; 11. Side auxiliary snap fastener; 12. Third fixing pin hole; 13. Pin limiting groove; 14. Sealing connection ring; 15. Snap fastener ring; 16. Locking connection ring; 17. Locking connection disc; 18. Locking fixing hole. Detailed Implementation

[0018] Example 1:

[0019] Please see Figure 1-4 This utility model provides a technical solution: a reducing pipe with the same inner and outer wall thickness, including a first reducing pipe 1 and a second reducing pipe 2. A first connecting flange 3 is fixedly connected to one top side of the first reducing pipe 1. A first connecting sealing hole 4 is opened on one side surface of the first connecting flange 3. A first fixing lug 5 is fixedly connected to one top edge of one side of the first connecting flange 3. A first fixing pin hole 6 is opened on one side surface of the first fixing lug 5. A second connecting flange 7 is fixedly installed to one top side of the second reducing pipe 2. A second connecting sealing hole 8 is opened on one side surface of the second connecting flange 7. A second fixing lug 9 is fixedly connected to one top side of the second connecting flange 7. A second fixing pin hole 10 is opened on one side surface of the second fixing lug 9. A side auxiliary buckle 11 is detachably installed on the side surface of the first connecting flange 3 near the first fixing lug 5. A third fixing pin hole 12 is provided on the top surface of one side of the buckle 11, and a pin limiting groove 13 is provided on the back surface of one side of the side auxiliary buckle 11. The positions of the first connecting sealing hole 4 and the second connecting sealing hole 8 are one-to-one, and the cross-sectional diameters of the first connecting sealing hole 4 and the second connecting sealing hole 8 are the same. The positions of the first fixing pin hole 6 and the second fixing pin hole 10 are one-to-one, and the cross-sectional diameters of the first fixing pin hole 6 and the second fixing pin hole 10 are the same. The pin limiting groove 13 and the first fixing ear 5 are connected by a movable snap-fit. The pin limiting groove 13 and the second fixing ear 9 are connected by a movable snap-fit. The third fixing pin hole 12 penetrates the top and bottom of the side auxiliary buckle 11. The positions of the third fixing pin hole 12 and the first fixing pin hole 6 are one-to-one, and the cross-sectional diameters of the third fixing pin hole 12 and the first fixing pin hole 6 are the same.

[0020] In the implementation scheme, when the small-diameter end of the first reducer 1 is connected, the alignment between the first connecting flange 3 and the second connecting flange 7 is performed. At this time, the first connecting sealing hole 4 and the second connecting sealing hole 8 are aligned. Screws are installed inside the first connecting sealing hole 4 and the second connecting sealing hole 8 to achieve a sealed connection between the first reducer 1 and the second reducer 2. The first fixing ear 5 and the second fixing ear 9 are directly wrapped by the side auxiliary buckle 11. At this time, the first fixing ear 5 and the second fixing ear 9 are directly inserted into the pin limiting groove 13. The third fixing pin hole 12 is aligned with the first fixing pin hole 6. The first fixing pin hole 6 and the second fixing pin hole 10 are directly aligned. A pin is directly inserted into the third fixing pin hole 12 to further lock the sealing buckle between the first connecting flange 3 and the second connecting flange 7, thereby improving the stability of the connection between the first reducer 1 and the second reducer 2.

[0021] Example 2:

[0022] Please see Figure 1-4 This utility model provides a technical solution: a reducing pipe with the same inner and outer wall thickness, including a first reducing pipe 1 with a sealing connecting ring 14 detachably installed on the top end of the side away from the first connecting flange 3, a snap-fit ​​sleeve ring 15 fixedly connected to the top surface of one side of the sealing connecting ring 14, a locking connecting ring 16 detachably installed on the outer wall surface of one side of the snap-fit ​​sleeve ring 15, a locking connecting disc 17 fixedly connected to the top end of one side of the locking connecting ring 16, and a locking fixing hole 18 opened on one side surface of the locking connecting disc 17. There are two snap-fit ​​sleeve rings 15, symmetrically arranged. The snap-fit ​​sleeve 15 and the first reducer 1 are connected in a movable snap-fit ​​manner on the top surfaces of both sides of the sealing connecting ring 14. The snap-fit ​​sleeve 15 and the second reducer 2 are also connected in a movable snap-fit ​​manner. The cross-sectional diameter of the locking connecting ring 16 is larger than that of the snap-fit ​​sleeve 15. The locking connecting ring 16 and the snap-fit ​​sleeve 15 are connected in a movable sleeve manner. The locking connecting discs 17 are distributed on the top surfaces of both sides of the locking connecting ring 16. The surfaces of the two locking connecting discs 17 are provided with locking holes 18, and the positions of the locking holes 18 on the surfaces of the two locking connecting discs 17 correspond one-to-one.

[0023] In the implementation scheme, when the large-diameter end of the first reducer 1 is connected, the first reducer 1 and the second reducer 2 are directly snapped into the inside of the snap-fit ​​sleeves 15 on both sides of the sealing connection ring 14 by means of pins. Locking connection rings 16 are provided on the surface of the snap-fit ​​sleeves 15 on both sides. The locking connection rings 16 are directly fitted onto the surface of the snap-fit ​​sleeves 15. Screws are installed in the locking fixing holes 18 on the surface of the locking connection plate 17 to lock the connection between the snap-fit ​​sleeves 15 and the first reducer 1, thereby further ensuring the connection stability between the first reducer 1 and the snap-fit ​​sleeves 15. The same principle is used to lock the connection between the second reducer 2 and the snap-fit ​​sleeves 15, thereby improving the connection sealing of the device.

[0024] Working principle:

[0025] When connecting the smaller diameter end of the first reducer 1, the alignment between the first connecting flange 3 and the second connecting flange 7 is performed, and the alignment between the first connecting sealing hole 4 and the second connecting sealing hole 8 is achieved. Screws are installed inside the first connecting sealing hole 4 and the second connecting sealing hole 8 to achieve a sealed connection between the first reducer 1 and the second reducer 2. The first fixing ear 5 and the second fixing ear 9 are directly wrapped by the side auxiliary buckle 11. The first fixing ear 5 and the second fixing ear 9 are directly inserted into the pin limiting groove 13. The third fixing pin hole 12 is aligned with the first fixing pin hole 6. The direct alignment between the first fixing pin hole 6 and the second fixing pin hole 10 is achieved. A pin is directly inserted into the third fixing pin hole 12 to further lock the sealing buckle between the first connecting flange 3 and the second connecting flange 7, thereby improving the stability of the connection between the first reducer 1 and the second reducer 2.

[0026] When connecting the large-diameter end of the first reducer 1, the first reducer 1 and the second reducer 2 are directly snapped into the inside of the snap-fit ​​sleeves 15 on both sides of the sealing connection ring 14 by the pins. A locking connection ring 16 is provided on the surface of the snap-fit ​​sleeves 15 on both sides. The locking connection ring 16 is directly fitted onto the surface of the snap-fit ​​sleeves 15. By installing screws in the locking fixing holes 18 on the surface of the locking connection plate 17, the connection between the snap-fit ​​sleeves 15 and the first reducer 1 is locked, which further ensures the connection stability between the first reducer 1 and the snap-fit ​​sleeves 15. The same principle is used to lock the connection between the second reducer 2 and the snap-fit ​​sleeves 15, thereby improving the connection sealing of the device.

Claims

1. A reducing pipe with the same inner and outer wall thickness, comprising a first reducing pipe (1) and a second reducing pipe (2), wherein a first connecting flange (3) is fixedly connected to one end of the first reducing pipe (1), characterized in that: The first connecting flange (3) has a first connecting sealing hole (4) on one side surface, and a first fixing ear (5) is fixedly connected to the top edge of one side of the first connecting flange (3). A first fixing pin hole (6) is opened on one side surface of the first fixing ear (5). A second connecting flange (7) is fixedly installed on one side top of the second reducer (2). A second connecting sealing hole (8) is opened on one side surface of the second connecting flange (7). A second fixing ear (9) is fixedly connected to one side top of the second connecting flange (7). A second fixing pin hole (10) is opened on one side surface of the second fixing ear (9).

2. A reducing pipe with the same inner and outer wall thickness according to claim 1, characterized in that, The first connecting flange (3) has a side auxiliary buckle (11) detachably installed on one side surface near the first fixing ear (5). The top surface of one side of the side auxiliary buckle (11) is provided with a third fixing pin hole (12), and the back surface of one side of the side auxiliary buckle (11) is provided with a pin limiting groove (13).

3. A reducing pipe with the same inner and outer wall thickness according to claim 1, characterized in that, The positions of the first connecting sealing hole (4) and the second connecting sealing hole (8) are one-to-one, and the cross-sectional diameters of the first connecting sealing hole (4) and the second connecting sealing hole (8) are the same. The positions of the first fixing pin hole (6) and the second fixing pin hole (10) are one-to-one, and the cross-sectional diameters of the first fixing pin hole (6) and the second fixing pin hole (10) are the same. The connection relationship between the pin limiting groove (13) and the first fixing ear (5) is a movable snap-fit. The connection relationship between the pin limiting groove (13) and the second fixing ear (9) is a movable snap-fit. The third fixing pin hole (12) penetrates the top and bottom of the side auxiliary buckle (11). The positions of the third fixing pin hole (12) and the first fixing pin hole (6) are one-to-one, and the cross-sectional diameters of the third fixing pin hole (12) and the first fixing pin hole (6) are the same.

4. A reducing pipe with the same inner and outer wall thickness according to claim 1, characterized in that, A sealing ring (14) is detachably installed on the top of the side of the first reducer (1) away from the first connecting flange (3). A snap-fit ​​sleeve (15) is fixedly connected to the top surface of one side of the sealing ring (14). A locking ring (16) is detachably installed on the outer wall surface of one side of the snap-fit ​​sleeve (15). A locking disc (17) is fixedly connected to the top of one side of the locking ring (16). A locking hole (18) is opened on one side surface of the locking disc (17).

5. A reducing pipe with the same inner and outer wall thickness according to claim 4, characterized in that, The number of the snap-fit ​​sleeves (15) is two. The two snap-fit ​​sleeves (15) are symmetrically distributed on the top surfaces of the two sides of the sealing connection ring (14). The snap-fit ​​sleeves (15) and the first reducer (1) are connected by a snap-fit. The snap-fit ​​sleeves (15) and the second reducer (2) are connected by a snap-fit.

6. A reducing pipe with the same inner and outer wall thickness according to claim 4, characterized in that, The cross-sectional diameter of the locking connecting ring (16) is larger than that of the snap-fit ​​sleeve (15). The connection between the locking connecting ring (16) and the snap-fit ​​sleeve (15) is a movable sleeve. The locking connecting discs (17) are distributed on both sides of the top of the locking connecting ring (16). The surfaces of the two locking connecting discs (17) are provided with locking fixing holes (18). The positions of the locking fixing holes (18) on the surfaces of the two locking connecting discs (17) correspond one-to-one.