Detachable and reusable clamping sleeve type circular pipe connecting and sealing device and assembling and disassembling method of detachable and reusable clamping sleeve type circular pipe connecting and sealing device
By designing a clamp-type circular tube connection sealing device with sealing connection sleeves, locking sleeves and split-flap threaded sleeves, the problem of pipeline connection between small construction space and different pipe diameter materials is solved, and a detachable and reusable seal is achieved Effects reduce installation difficulty and material consumption.
Patent Information
- Application Number
- CN202411866204.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-01-14
AI Technical Summary
The existing pipeline connection sealing structure is difficult to achieve removable and reusable sealing connections under the conditions of small construction space, different pipe diameters, and different materials under pressure. In addition, welding, threaded connection and other methods require a large operating space and material hardness matching.
A clamp type circular tube connecting sealing device including a sealing connection sleeve, a locking sleeve and a split-flap thread clamp are designed. The seal is achieved through the internal thread and the sealing groove, and the annular thread clamp of the split-flap thread clamp is used. The conical structure is locked and suitable for reuse of different pipe diameters and materials.
It realizes a sealed connection for removable and reusable pipes of different pipe diameters and materials in a narrow construction space, reducing installation difficulty and material consumption, and is suitable for pipeline connections of multiple pipe diameters and materials.
Smart Images
Figure CN119309077A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of arc wind tunnel testing, and in particular relates to a detachable and reusable ferrule-type circular pipe connecting and sealing device and a assembling and disassembling method thereof. Background Art
[0002] Generally, pipelines are used to transport media, and most of them have pressure-bearing and sealing requirements. At present, there are several common ways to seal and connect pipelines: First, welding, which requires specific welding tools to weld weldable pipeline materials within a certain operating space, especially for installed pipeline welding, which requires higher welding operating space. In addition, different diameter pipeline welding generally requires different diameter adapters for welding; second, threaded connection, the threaded connection that plays a sealing role generally uses pipe threads, and requires the connector to be able to rotate to tighten the threads; third, flange connection, flange connection is suitable for pipeline connections with a diameter of more than 100mm, and the seal adopts end face sealing. The connection between flange and pipe fittings is generally welded or threaded; fourth, crimping connection, which generally uses a crimping machine to deform and clamp the metal clamp ring and achieve hard sealing. The structure is not removable and cannot be reused; fifth, ferrule connection, which uses a formed ferrule joint and a sealing material to clamp the deformed pipeline bayonet to achieve connection sealing. In the above-mentioned pipeline connection sealing structure, the connection is made by welding or threaded connection, and the sealing is made by welding, pipe thread, metal hard seal and packing seal, etc., which generally require a certain installation operation space. Structures such as welding, metal seal and bayonet deformation connection have poor disassembly and reusability.
[0003] Currently, there is an urgent need to develop a detachable and reusable ferrule-type circular tube connection sealing device and a method for assembling and disassembling the same. Summary of the invention
[0004] One technical problem to be solved by the present invention is to provide a detachable and reusable ferrule-type circular tube connection sealing device. Another technical problem to be solved by the present invention is to provide a loading and unloading method of a detachable and reusable ferrule-type circular tube connection sealing device to meet the needs of repeated installation and sealing connection of pressure-bearing pipelines with narrow construction space, different pipe diameters, and different materials.
[0005] The detachable and reusable sleeve-type circular pipe connection sealing device of the present invention comprises a sealing connection sleeve, a locking sleeve and a split-flap threaded sleeve; The two sealing rings of the sealing connection sleeve seal the front and rear sections of the round pipe respectively; the front and rear two sets of split threaded ferrules and locking sleeves cooperate with the front and rear sections of the sealing connection sleeve respectively, and the front and rear sections of the round pipe are connected by threaded clamping.
[0006] Furthermore, the sealing connection sleeve is a stepped tube body; the front and rear ends are round tube sections, the front round tube section and the rear round tube section are both provided with internal threads, the length of the internal threads is determined by calculating the thread size, to ensure the connection strength of the front and rear round tube sections, the locking sleeve is connected by the internal threads, and the locking sleeve is screwed in horizontally; the middle section is a hexagonal tube body, and the hexagonal tube body is used for clamping the wrench; The inner cavity of the central cavity in the middle section is a stepped cavity; the front central cavity matches the outer diameter of the circular tube in the front section, and a circumferential sealing groove is provided on the inner wall of the front central cavity, with a built-in sealing ring for sealing the circular tube in the front section; the rear central cavity matches the outer diameter of the circular tube in the rear section, and a circumferential sealing groove is provided on the inner wall of the rear central cavity, with a built-in sealing ring for sealing the circular tube in the rear section.
[0007] Furthermore, the locking sleeve is provided with an external thread matching the internal thread of the sealing connection sleeve; the contact surface between the locking sleeve and the split threaded ferrule is a cone, and the diameter of the cone near the middle section of the sealing connection sleeve is greater than the diameter of the cone away from the middle section of the sealing connection sleeve; The split thread ferrule is provided with a plurality of petals evenly distributed along the circumferential direction, the inner wall surface of the split thread ferrule is provided with threads, the threads are annular threads or thread teeth, the minor diameter of the teeth is slightly smaller than the outer diameter of the round tube, the petal gap, diameter difference, tooth height and number of threads are calculated and determined based on the material hardness of the round tube; the material hardness and strength of the split thread ferrule are greater than those of the round tube, ensuring that the connection strength of the split thread ferrule after locking and deformation meets the connection requirements.
[0008] The assembly and disassembly method of the detachable and reusable sleeve-type round pipe connection sealing device of the present invention comprises an assembly method and a disassembly method; The installation method includes the following steps: S10. Install the sealing ring; A sealing ring is installed in each of the two circumferential sealing grooves on the inner wall of the sealing connection sleeve, one sealing ring corresponds to the round tube on the left side, and the other sealing ring corresponds to the round tube on the right side; S20. Install the locking sleeve; Put two locking sleeves on the left and right round tubes respectively, then insert the left round tube with the locking sleeve into the left annular cavity of the sealing connection sleeve from left to right, and insert the right round tube with the locking sleeve into the right annular cavity of the sealing connection sleeve from right to left; S30. Install the split thread ferrule and lock it; Insert the two split thread ferrules into the corresponding locking sleeves respectively; clamp the wrench on the hexagonal tube body of the sealing connection sleeve; rotate the wrench to screw in the threads of the locking sleeve and the sealing connection sleeve, compress the outer cone surface of the split thread ferrule, realize thread compression, and complete the connection and sealing of the left round tube and the right round tube; The disassembly method includes the following steps: Rotate the wrench to loosen the threads of the two ends of the sealing connection sleeve and the corresponding locking sleeve, take out the corresponding split thread ferrule, pull out the corresponding round tube, and complete the disassembly.
[0009] The detachable and reusable ferrule-type circular tube connection sealing device of the present invention utilizes the change in the circumferential diameter of the cone cylinder caused by the horizontal displacement of the locking sleeve to achieve a larger locking force of the threaded ferrule on the circular tube, and cooperates with the sealing structure of the sealing connection sleeve to achieve connection and sealing of the pipeline.
[0010] The assembly and disassembly method of the detachable and reusable ferrule-type circular pipe connection sealing device of the present invention adopts a detachable structure, a threaded ferrule split-petal design, and a sealing position separated from a threaded clamping position, which can be re-installed and used. It is suitable for connecting pressure-bearing pipes of different diameters, different materials, and moderate material hardness (HB < 100), and can better solve the pipeline connection and installation problems caused by limited construction space, inconsistent pipe diameters, and difficult welding of heterogeneous materials. It is also suitable for sealed connection pipelines with repeated disassembly and assembly requirements, which can effectively reduce the difficulty of pipeline installation and material consumption, and has engineering practical value. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1a This is a front view of the assembly schematic diagram of Example 1 (connecting round tubes of the same diameter); Figure 1b for Figure 1a AA section view (connecting round tubes of the same diameter); Figure 2a This is a front view of the assembly schematic diagram of Example 2 (connecting round tubes of different diameters); Figure 2b for Figure 2a AA cross-section diagram (connecting circular tubes of different diameters).
[0012] In the figure, 1. Sealing connection sleeve; 2. Sealing ring; 3. Locking sleeve; 4. Split threaded ferrule; 5. Round tube. DETAILED DESCRIPTION
[0013] The present invention is described in detail below with reference to the accompanying drawings and embodiments.
[0014] Example 1: Figure 1a , Figure 1b As shown, the detachable and reusable sleeve-type circular tube connection sealing device of this embodiment is used to connect circular tubes 5 of the same diameter, and the outer diameters of the circular tube 5 on the left and the circular tube 5 on the right are both ΦD1; Figure 1b The cross section of the non-threaded end of the middle part of the sealing connection sleeve 1 is a hexagon; the length of the opposite side of the hexagon is S, and the diagonal diameter is ΦN. This embodiment is used for connecting the copper heat exchange tube of the arc wind tunnel cooler, the copper heat exchange tube has a diameter of 20mm~45mm, a temperature range of 20℃~80℃, and a pressure range of 0.5MPa~6.0MPa.
[0015] Example 2: Figure 2a , Figure 2b As shown, the detachable and reusable sleeve-type circular tube connection sealing device of this embodiment is used to connect circular tubes 5 of different diameters; the outer diameter of the circular tube 5 on the left is ΦD1, and the outer diameter of the circular tube 5 on the right is ΦD2, ΦD1<ΦD2. The connection process and disassembly process of embodiment 2 are the same as those of embodiment 11, and the difference is only reflected in that the left and right annular cavities of the sealing connection sleeve 1, the two sealing rings 2, the two locking sleeves 3, and the two split threaded sleeves 4 are matched with the corresponding left and right circular tubes 5, respectively.
[0016] The above embodiments only express typical implementations of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention's patent shall be subject to the attached claims.
Claims
1. A detachable and reusable sleeve-type round pipe connection sealing device, characterized in that: The detachable and reusable sleeve-type circular pipe connection sealing device comprises a sealing connection sleeve (1), a locking sleeve (3) and a split-flap threaded sleeve (4); Two sealing rings (2) of the sealing connection sleeve (1) seal the front and rear sections of the round tube (5) respectively; the front and rear two sets of split threaded clamping sleeves (4) and locking sleeves (3) cooperate with the front and rear sections of the sealing connection sleeve (1) respectively, and the front and rear sections of the round tube (5) are connected by threaded clamping.
2. The detachable and reusable sleeve-type circular pipe connection sealing device according to claim 1 is characterized in that: The sealing connection sleeve (1) is a stepped tube body; the front and rear ends are round tube sections, the front round tube section and the rear round tube section are both provided with internal threads, the length of the internal threads is determined by calculation according to the thread size, so as to ensure the connection strength of the front and rear round tube sections (5), and the locking sleeve (3) is connected through the internal threads to achieve horizontal screwing of the locking sleeve (3); the middle section is a hexagonal tube body, and the hexagonal tube body is used for clamping a wrench; The inner cavity of the central cavity of the middle section is a stepped cavity; the front central cavity matches the outer diameter of the circular tube (5) of the front section, a circumferential sealing groove is provided on the inner wall of the front central cavity, and a sealing ring (2) is built in for sealing the circular tube (5) of the front section; the rear central cavity matches the outer diameter of the circular tube (5) of the rear section, a circumferential sealing groove is provided on the inner wall of the rear central cavity, and a sealing ring (2) is built in for sealing the circular tube (5) of the rear section.
3. The detachable and reusable sleeve-type circular pipe connection sealing device according to claim 2 is characterized in that: The locking sleeve (3) is provided with an external thread matching the internal thread of the sealing connection sleeve (1); the contact surface between the locking sleeve (3) and the split threaded sleeve (4) is a cone, and the diameter of the cone of the locking sleeve (3) close to the middle section of the sealing connection sleeve (1) is larger than the diameter of the cone away from the middle section of the sealing connection sleeve (1); The split thread ferrule (4) is provided with a plurality of split ferrules evenly distributed along the circumferential direction, the inner wall surface of the split thread ferrule (4) is provided with threads, the threads are annular threads or thread teeth, the tooth minor diameter is slightly smaller than the outer diameter of the round tube (5), the split ferrule gap, diameter difference, tooth height and number of threads are calculated and determined based on the material hardness of the round tube (5); the material hardness and strength of the split thread ferrule (4) are greater than the material hardness and strength of the round tube (5), ensuring that the connection strength of the split thread ferrule (4) after locking and deformation meets the connection requirements.
4. A method for assembling and disassembling a detachable and reusable ferrule-type circular pipe connection sealing device, which is used for the detachable and reusable ferrule-type circular pipe connection sealing device described in claim 3, characterized in that: The loading and unloading method includes an installation method and a disassembly method; The installation method includes the following steps: S10. Install the sealing ring (2); A sealing ring (2) is installed in each of two circumferential sealing grooves on the inner wall surface of the sealing connection sleeve (1), one sealing ring (2) corresponds to the circular tube (5) on the left side, and the other sealing ring (2) corresponds to the circular tube (5) on the right side; S20. Install the locking sleeve (3); The two locking sleeves (3) are respectively put on the left circular tube (5) and the right circular tube (5), and then the left circular tube (5) with the locking sleeve (3) is inserted from left to right into the left annular cavity of the sealing connection sleeve (1), and the right circular tube (5) with the locking sleeve (3) is inserted from right to left into the right annular cavity of the sealing connection sleeve (1); S30. Install the split thread ferrule (4) and tighten it; Insert the two split thread ferrules (4) into the corresponding locking sleeves (3) respectively; clamp a wrench on the hexagonal tube body of the sealing connection sleeve (1); rotate the wrench to screw in the threads of the locking sleeve (3) and the sealing connection sleeve (1), compress the outer cone surface of the split thread ferrule (4), tighten the threads, and complete the connection and sealing of the left round tube (5) and the right round tube (5); The disassembly method includes the following steps: Rotate the wrench to loosen the threads of the two ends of the sealing connection sleeve (1) and the corresponding locking sleeve (3), remove the corresponding split thread sleeve (4), and pull out the corresponding round tube (5) to complete the disassembly.