A snap-fit pipe compensator modular expansion joint

Abstract

The application relates to the technical field of pipeline connecting components, and discloses a buckle type pipeline compensator modular expansion joint. The buckle type pipeline compensator modular expansion joint comprises a bellows, a pipeline, a bridging cylinder, a butt joint cylinder, a synchronous driving assembly, a stud worm, a linkage assembly, a pushing assembly and an adjusting assembly. The bellows is provided with clamps at two ends and is fixedly connected with the bridging cylinder and the butt joint cylinder respectively. The bridging cylinder is provided with the synchronous driving assembly inside and the stud worm outside which is engaged with the synchronous driving assembly. The butt joint cylinders on the two sides are connected with the synchronous driving assembly through the linkage assembly. The butt joint cylinder is provided with the radially movable pushing assembly and the axially movable adjusting assembly. The two-side pipeline synchronous expansion adjustment can be realized through unilateral single-point operation, the expansion amount is consistent and the stress is uniform, the bellows is prevented from being damaged due to eccentric loading, the buckle type quick-mounting structure is adopted, a plurality of bolts are not needed for alignment and fastening, the pipeline is convenient to disassemble and assemble, has good sealing performance, is convenient to maintain and replace, and is suitable for pipeline systems such as water supply and drainage, heating and ventilation, and chemical engineering.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection components, specifically a snap-fit ​​modular expansion joint for pipeline compensators. Background Technology

[0002] Pipeline compensators are key components in pipeline systems used to absorb axial and radial displacements and compensate for thermal expansion and contraction. They are widely used in water supply and drainage, HVAC, chemical, and municipal pipeline networks.

[0003] Existing pipe compensators mostly use flange bolt fastening, welding, or clamp locking methods for connection, which have problems such as cumbersome installation steps, asynchronous expansion and contraction adjustment of pipes on both sides, and difficulty in disassembly and maintenance in the later stage.

[0004] Traditional expansion joints require bolts to be aligned and pre-tightened evenly during installation, which is time-consuming and labor-intensive. Furthermore, the expansion and contraction of the pipes on both sides cannot be adjusted synchronously, which can easily lead to uneven stress and damage to the corrugated pipe due to uneven load. This makes it difficult to meet the needs of rapid installation and synchronous expansion and contraction adjustment of pipeline systems.

[0005] In summary, a snap-fit ​​modular expansion joint for pipeline compensators is proposed to solve the above problems. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a snap-fit ​​modular expansion joint for pipe compensators, which has advantages such as quick snap-fit ​​installation, synchronous adjustment of pipe expansion and contraction on both sides, uniform stress distribution, and convenient disassembly and maintenance. It solves the problems of cumbersome installation, asynchronous expansion and contraction adjustment, easy damage to corrugated pipes due to uneven load, and difficult disassembly and maintenance of traditional compensators.

[0008] (II) Technical Solution

[0009] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A snap-fit ​​type modular expansion joint for pipe compensators includes a corrugated pipe and a pipe. Both ends of the corrugated pipe and one end of the pipe are provided with chucks. The corrugated pipe is arranged vertically. A bridging cylinder is fixed to the opposite side of the corrugated pipe by bolts. A docking cylinder adapted to the chuck at one end of the pipe is fixed to the opposite side of the corrugated pipe by bolts. A synchronous drive component coaxial with the bridging cylinder is provided inside the bridging cylinder. A bolt head worm gear extending into the front of the bridging cylinder and meshing with the synchronous drive component is rotatably connected to the front side of the bridging cylinder. Linkage components arranged in a ring array and extending into the docking cylinder are respectively connected to the synchronous drive component on the opposite side of the docking cylinder.

[0010] The outer side of each docking cylinder is provided with pushing components arranged in a ring array and extending to its inner side. The pushing components are radially movable and adapted to the chuck at one end of the pipe. The outer side of each docking cylinder is provided with adjusting components that are axially movable and abut against the side opposite to the pushing components.

[0011] The beneficial effects of this invention are:

[0012] 1) This snap-fit ​​pipe compensator modular expansion joint has the advantages of enabling synchronous expansion and contraction adjustment of pipes on both sides with a single-point operation on one side, consistent expansion and contraction, balanced force, and effective prevention of corrugated pipe eccentric load torsion damage.

[0013] 2) This snap-fit ​​pipe compensator modular expansion joint has the advantages of quick snap-fit ​​installation, no need to repeatedly align and tighten multiple sets of bolts, greatly improved disassembly and assembly efficiency, and modular structure that facilitates on-site replacement and later maintenance.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the synchronous drive assembly includes a transmission cylinder, an arc-shaped countersunk hole, an arc-shaped through hole, and a turbine. The transmission cylinder is rotatably connected to the inside of the bridging cylinder and is coaxial with it. The upper and lower ends of the transmission cylinder are provided with arc-shaped countersunk holes arranged in a ring array. The outer side of the transmission cylinder is provided with arc-shaped through holes arranged in a ring array and symmetrically distributed vertically. The arc-shaped through holes extend through the arc-shaped countersunk holes to the inner side of the transmission cylinder. A turbine that meshes with the bolt head worm gear is fixedly connected to the outer side of the middle section of the transmission cylinder.

[0016] Furthermore, the linkage component includes connecting rods and a drive shaft. Connecting rods arranged in a ring array and extending into the interior of the docking cylinder and into the interior of the arc-shaped groove countersunk hole are fixedly connected to the opposite side of the docking cylinder. A drive shaft extending into the arc-shaped through hole and drivingly connected to the connecting rod is fixedly connected to one end of the connecting rod in the arc-shaped groove countersunk hole.

[0017] The beneficial effects of adopting the above-mentioned further solution are that, through the self-locking transmission formed by the bolt head worm gear and the turbine, the transmission cylinder can be driven to rotate by operating only on one side of the bridge cylinder. The symmetrically arranged arc-shaped through holes cooperate with the transmission shaft to transmit the rotational motion synchronously and equally to the connecting rods on both sides, ensuring that the expansion and contraction of the upper and lower connecting cylinders and the bellows are synchronized, avoiding uneven displacement on both sides that leads to uneven load, tearing and failure of the bellows. At the same time, the transmission is smooth, highly accurate and reliable in operation.

[0018] Furthermore, the pushing assembly includes a double ball head shaft and a return spring. The outer side of the docking cylinder is provided with double ball head shafts arranged in a ring array and extending to its inner side. The double ball head shafts are radially movable and adapted to the chuck at one end of the pipe. The outer side of the double ball head shafts is fitted with a return spring located inside the docking cylinder.

[0019] Furthermore, the adjusting assembly includes an adjusting ring and a variable diameter ring. The adjusting ring is threadedly connected to the outer side of the docking cylinder, and the top of the adjusting ring is rotatably connected to a variable diameter ring that abuts against the opposite side of the double ball joint shaft.

[0020] Furthermore, the outer side of the docking cylinder is threaded with an anti-loosening ring that is in close contact with the other side of the adjusting ring.

[0021] The beneficial effects of adopting the above-mentioned further solution are that the rotating adjusting ring can drive the variable diameter ring to move axially, and the inclined surface structure on the inner side of the variable diameter ring can be used to push the double ball head shaft to extend radially inward, quickly clamping the outer conical surface of the pipe chuck, so that the pipe chuck and the connecting cylinder are tightly connected, realizing a boltless quick snap-fit ​​connection, improving the speed of installation and disassembly. The return spring can automatically reset the double ball head shaft after the adjusting ring is rotated in the opposite direction, which is convenient for disassembly. The anti-loosening ring can press the adjusting ring to form an anti-loosening structure, avoiding the connection from loosening due to vibration during long-term operation, and ensuring the sealing performance and structural stability of the pipeline connection.

[0022] Furthermore, the upper and lower ends of the bridging cylinder and the opposite end of the connecting cylinder are each provided with stepped grooves that are adapted to the chucks at both ends of the bellows. The interior of each stepped groove is fixed with a threaded rod that is adapted to the through hole of the chuck at both ends of the bellows.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the stepped groove can radially position and axially limit the bellows chuck, ensuring assembly coaxiality and reducing installation deviation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the bridging tube structure of the present invention;

[0026] Figure 3 This is a cross-sectional view of the docking cylinder structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the bellows structure of the present invention;

[0028] Figure 5 This is an enlarged schematic diagram of the structure at point a in this invention;

[0029] Figure 6 This is an enlarged schematic diagram of the structure at point b of the present invention.

[0030] In the diagram: 1. Bellows; 2. Pipe; 3. Bridging cylinder; 4. Connecting cylinder; 5. Synchronous drive assembly; 501. Transmission cylinder; 502. Arc-shaped groove countersunk hole; 503. Arc-shaped through hole; 504. Turbine; 6. Bolt-head worm gear; 7. Linkage assembly; 701. Connecting rod; 702. Drive shaft; 8. Pushing assembly; 801. Double ball head shaft; 802. Return spring; 9. Adjusting assembly; 901. Adjusting ring; 902. Variable diameter ring; 10. Anti-loosening ring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1, by Figure 1-6 The present invention provides a snap-fit ​​modular expansion joint for pipe compensators. The invention includes a corrugated pipe 1 and a pipe 2. Both ends of the corrugated pipe 1 and one end of the pipe 2 are provided with chucks. The corrugated pipe 1 is arranged vertically. A bridging cylinder 3 is bolted to the opposite side of the corrugated pipe 1. A docking cylinder 4 adapted to the chuck at one end of the pipe 2 is bolted to the opposite side of the corrugated pipe 1. A synchronous drive component 5 is provided inside the bridging cylinder 3 and is coaxial with it. A bolt head worm gear 6 is rotatably connected to the front side of the bridging cylinder 3 and extends into it and meshes with the synchronous drive component 5. Linkage components 7 are arranged in a ring array on the opposite side of the docking cylinder 4 and extend into the docking cylinder 4 and are respectively connected to the synchronous drive component 5 for transmission.

[0033] The outer side of the docking cylinder 4 is provided with pushing components 8 arranged in a ring array and extending to its inner side. The pushing components 8 are radially movable and adapted to the chuck at one end of the pipe 2. The outer side of the docking cylinder 4 is provided with adjusting components 9 that are axially movable and abut against the side opposite to the pushing components 8.

[0034] The synchronous drive assembly 5 includes a transmission cylinder 501, an arc-shaped groove countersunk hole 502, an arc-shaped through hole 503, and a turbine 504. The transmission cylinder 501 is rotatably connected to the inside of the bridge cylinder 3. The upper and lower ends of the transmission cylinder 501 are provided with arc-shaped groove countersunk holes 502 arranged in a ring array. The outer side of the transmission cylinder 501 is provided with arc-shaped through holes 503 arranged in a ring array and symmetrically distributed in the upper and lower parts. The arc-shaped through holes 503 extend through the arc-shaped groove countersunk holes 502 to the inner side of the transmission cylinder 501. The outer side of the middle section of the transmission cylinder 501 is fixedly connected with a turbine 504 that meshes with the bolt head worm gear 6.

[0035] The linkage assembly 7 includes a connecting rod 701 and a drive shaft 702. The connecting rods 701, which are arranged in a ring array and extend into the interior of the connecting cylinder 4 and into the arc-shaped groove countersunk hole 502, are fixed to the opposite side of the connecting cylinder 4. The drive shaft 702, which extends into the arc-shaped through hole 503 and is connected to the connecting rod 701 at one end of the connecting rod 701, is fixed to it.

[0036] In Example 2, based on Example 1, the pushing assembly 8 includes a double ball head shaft 801 and a return spring 802. The outer side of the docking cylinder 4 is provided with double ball head shafts 801 arranged in a ring array and extending to its inner side. The double ball head shafts 801 can move radially and are adapted to the chuck at one end of the pipe 2. The outer side of the double ball head shafts 801 is fitted with a return spring 802 located inside the docking cylinder 4.

[0037] The adjusting assembly 9 includes an adjusting ring 901 and a variable diameter ring 902. The adjusting ring 901 is threadedly connected to the outer side of the docking cylinder 4. The top of the adjusting ring 901 is rotatably connected to the variable diameter ring 902, which abuts against the opposite side of the double ball head shaft 801.

[0038] The outer side of the docking cylinder 4 is threaded with an anti-loosening ring 10 that is in close contact with the other side of the adjusting ring 901;

[0039] The upper and lower ends of the bridging cylinder 3 and the opposite end of the connecting cylinder 4 are each provided with stepped grooves that are adapted to the chucks at both ends of the bellows 1. The interior of each stepped groove is fixed with a threaded rod that is adapted to the through hole of the chuck at both ends of the bellows 1.

[0040] Working principle:

[0041] Implementation steps for the first innovation point:

[0042] Step 1: Use an Allen wrench to rotate the worm gear 6 on the outside of the bridge cylinder 3. The worm gear 6 drives the turbine 504 in the synchronous drive assembly 5 to rotate, forming a self-locking transmission.

[0043] Step 2: The turbine 504 drives the transmission cylinder 501 to rotate coaxially, which in turn drives the arc-shaped through holes 503 at both ends of the transmission cylinder 501 to rotate synchronously, thus pushing the transmission shaft 702 of the linkage components 7 on both sides to move along the arc-shaped through holes 503.

[0044] Step 3: The drive shaft 702 drives the two connecting cylinders 4 on both sides to make equal and opposite axial displacements through the connecting rod 701, so that the upper and lower bellows 1 are stretched or compressed synchronously, ensuring that the amount of expansion and contraction on both sides is consistent and the force is balanced.

[0045] Implementation steps for the second innovation point:

[0046] Step 1: Push the chuck at end 2 of the pipe into the connecting cylinder 4 to complete radial positioning and initial fitting;

[0047] Step 2: Rotating the adjusting ring 901 pushes the variable diameter ring 902 to move axially. The inner inclined surface of the variable diameter ring 902 squeezes the double ball head shaft 801 to extend radially inward, clamping the conical surface of the pipe 2 chuck, forcing the pipe 2 chuck to tightly connect with the docking cylinder 4, achieving rapid tight sealing.

[0048] Step 3: Tighten the anti-loosening ring 10 to tighten the adjusting ring 901 to prevent vibration from loosening. When disassembling, loosen the anti-loosening ring 10 and the adjusting ring 901. The return spring 802 will automatically push the double ball head shaft 801 back to its original position, and then the pipe can be pulled out.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A snap-fit ​​modular expansion joint for pipe compensators, comprising a corrugated pipe and a pipe, wherein both ends of the corrugated pipe and one end of the pipe are provided with clamps, characterized in that: The corrugated pipes are arranged vertically. A bridging cylinder is fixed to one side of the corrugated pipe by bolts. A docking cylinder adapted to a chuck at one end of the pipe is fixed to the opposite side of the corrugated pipe by bolts. A synchronous drive assembly is provided inside the bridging cylinder and is coaxial with it. A bolt head worm gear extending into the front of the bridging cylinder and meshing with the synchronous drive assembly is rotatably connected. A linkage assembly arranged in a ring array and extending into the docking cylinder is provided on the opposite side of the docking cylinder and is respectively connected to the synchronous drive assembly. The outer side of each docking cylinder is provided with pushing components arranged in a ring array and extending to its inner side. The pushing components are radially movable and adapted to the chuck at one end of the pipe. The outer side of each docking cylinder is provided with adjusting components that are axially movable and abut against the side opposite to the pushing components.

2. The modular expansion joint of the snap-fit ​​pipe compensator according to claim 1, characterized in that: The synchronous drive assembly includes a transmission cylinder, an arc-shaped countersunk hole, an arc-shaped through hole, and a turbine. The transmission cylinder is rotatably connected to the inside of the bridging cylinder and is coaxial with it. The upper and lower ends of the transmission cylinder are provided with arc-shaped countersunk holes arranged in a ring array. The outer side of the transmission cylinder is provided with arc-shaped through holes arranged in a ring array and symmetrically distributed vertically. The arc-shaped through holes extend through the arc-shaped countersunk holes to the inner side of the transmission cylinder. A turbine that meshes with the worm gear is fixed to the outer side of the middle section of the transmission cylinder.

3. A snap-fit ​​modular expansion joint for pipe compensators according to claim 2, characterized in that: The linkage assembly includes connecting rods and a drive shaft. Connecting rods arranged in a ring array and extending into the interior of the docking cylinder and into the interior of the arc-shaped groove countersunk hole are fixedly connected to the opposite side of the docking cylinder. A drive shaft extending into the arc-shaped through hole and drivingly connected to the connecting rod is fixedly connected to one end of the connecting rod at the arc-shaped groove countersunk hole.

4. A snap-fit ​​type modular expansion joint for pipe compensators according to claim 1, characterized in that: The pushing assembly includes a double ball head shaft and a return spring. The outer side of the docking cylinder is provided with double ball head shafts arranged in a ring array and extending to its inner side. The double ball head shafts are radially movable and adapted to the chuck at one end of the pipe. The outer side of the double ball head shafts is fitted with a return spring located inside the docking cylinder.

5. A snap-fit ​​modular expansion joint for pipe compensators according to claim 4, characterized in that: The adjusting assembly includes an adjusting ring and a reducing ring. The adjusting ring is threadedly connected to the outer side of the docking cylinder, and the reducing ring is rotatably connected to the top of the adjusting ring, which abuts against the opposite side of the double ball joint shaft.

6. A snap-fit ​​modular expansion joint for pipe compensators according to claim 5, characterized in that: The outer thread of the docking cylinder is connected to an anti-loosening ring that is in close contact with the other side of the adjusting ring.

7. A snap-fit ​​modular expansion joint for pipe compensators according to claim 1, characterized in that: The upper and lower ends of the bridging cylinder and the opposite end of the connecting cylinder are each provided with stepped grooves that are adapted to the chucks at both ends of the bellows. The interior of each stepped groove is fixed with a threaded rod that is adapted to the through hole of the chuck at both ends of the bellows.

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