Multi-branch unequal-height broken line type high-pressure hard tube compensation structure and using method thereof

Abstract

The invention belongs to the technical field of industrial pipeline compensation, and discloses a multi-branch unequal-height fold line type high-pressure hard pipe compensation structure and a using method thereof. The high-pressure hard tube compensation structure comprises a high-pressure sleeve compensator and a double-right-angle hinge compensator; the high-pressure sleeve compensator stretches out and draws back in the axial direction for length compensation. The double-right-angle hinge compensator is used for elevation and angle compensation. The use method of the high-pressure hard tube compensation structure comprises the steps of designing a single branch; mounting a high-pressure sleeve compensator; mounting a double-right-angle hinge compensator; installing a single branch; and assembling a plurality of branches. The high-pressure hard pipe compensation structure is a thick-wall type combined compensator, can achieve high-pressure pipeline installation length compensation and can further achieve high-pressure pipeline installation elevation and angle compensation. According to the using method of the high-pressure hard pipe compensation structure, multiple branches can be assembled according to needs, and the high-pressure hard pipe compensation structure is suitable for high-pressure fluid circulation complex pipelines and has engineering practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial pipeline compensation, and in particular relates to a multi-branch unequal height broken line type high-pressure hard pipe compensation structure and a use method thereof. Background Art

[0002] With the improvement of industrial level, the layout of pipelines used in industrial equipment is intricate, and multi-branch pipelines often converge. Errors are inevitable in the installation of industrial pipelines, and compensators are generally required to be installed on the pipelines. For complex pipelines with multiple branches, unequal heights, and broken lines, compensation needs to be considered in all directions. Common compensator types include metal-wound corrugated hoses, rubber hoses, corrugated expansion joints, rotary compensators, sleeve compensators, etc. In high-pressure pipeline applications, metal-wound corrugated hoses and rubber hoses are currently commonly used; in high-pressure, large-diameter pipeline applications, metal-wound corrugated hoses are generally used, which can achieve length and angle compensation functions at the same time.

[0003] There are many public literature reports on common compensator types such as metal-wound corrugated hoses, rubber hoses, bellows expansion joints, rotary compensators, and sleeve compensators, and an industrial chain with mature technology and market has been formed.

[0004] The sleeve compensator absorbs the axial displacement of the pipeline through the relative movement between the core tube and the shell. It is generally used in medium and low pressure applications. The main structural types include thrust sleeve compensators and non-thrust sleeve compensators. When the medium pressure is high, the sleeve compensator is prone to wear and fracture of the sealing material, which eventually leads to medium leakage, and the core tube is easily deformed by shear stress.

[0005] The Chinese Patent Literature Library discloses a thrustless sleeve compensator (CN117685440A), which includes a sealing mechanism, a compensation structure, a connecting mechanism, a clamping mechanism, a collecting mechanism, and a locking mechanism. Through the coordinated installation of the compensating mechanism and the sealing mechanism, the connected pipeline has elastic compensation and better sealing, thereby reducing leakage and damage to the pipeline. Through the connecting mechanism, one end of the compensating mechanism can be connected to connecting accessories of different sizes, thereby facilitating the connection of different pipelines. Through the clamping mechanism, the compensating mechanism is quickly connected to the external pipeline flange through the connecting mechanism, and it is easy to disassemble and assemble, which is conducive to subsequent rapid maintenance and replacement. Through the locking mechanism, the collecting mechanism is convenient to disassemble and assemble, which is conducive to subsequent cleaning; through the driving of the sealing mechanism by the locking mechanism, the sealing between the collecting mechanism and the sealing seat is better.

[0006] The Chinese Patent Literature Library discloses a sleeve compensator (CN220470954U) with high sealing performance. A sealing ring is connected to the inner side of the outer shell of the sleeve compensator, and a groove is opened on the surface of the sealing ring, and a notch compensation ring is connected to the inner side of the groove; the notch compensation ring and the protrusion compensation ring are pushed respectively by extending the spring push rod to deform and compress the high-temperature spring pad, and the inner diameter of the sealing ring formed by the notch compensation ring and the protrusion compensation ring is reduced to achieve sealing with the outer diameter of the core tube, thereby adaptively compensating the wear gap caused by the sliding of the inner diameter of the sleeve compensator and the inner diameter of the notch compensation ring and the protrusion compensation ring, thereby improving the sealing of the sleeve compensator and extending the service life and reliability of the sleeve compensator.

[0007] The Chinese Patent Literature Library discloses a sleeve bellows compensator (CN220488605U), which transports high-temperature media through a core tube. When the high-temperature media is transported to the bellows, the bellows expansion joint expands due to the high temperature and can adapt to larger axial displacements, giving full play to the sealing effect of the bellows. At the same time, the sleeve compensator connected in series at the right end of the core tube cooperates with the bellows to play a double sealing role, thereby improving the sealing effect and preventing leakage.

[0008] The rotary compensator absorbs the circumferential displacement and vibration of the pipeline through the relative rotation of the rotary drum, and is generally used in medium and low pressure applications. The rotary compensator has a complex structure, is difficult to maintain, and has high cost. The rotary compensator basically adopts a compression seal, and the state of the sealing material cannot be detected in time during use. When the wear is severe, leakage will occur quickly, which poses a great safety hazard.

[0009] The Chinese Patent Literature Library discloses a maintenance-free rotary compensator (CN213871658U), which is maintenance-free and easy to install by filling the central through hole of the bolt. The external tube and the bellows are connected by the outer tube connecting sleeve and the outer tube, and the bellows connector and the bellows, while the ball bearing is used to avoid torsional stress between the outer tube and the bellows; the thread on the bolt wall is kept in close contact with the threaded hole wall on the support platform by the compression spring, so as to prevent the bolt from loosening and rotating outward, causing the inner clamp ring to be disengaged.

[0010] The Chinese Patent Literature Library discloses a high temperature and high pressure resistant rotary compensator (CN221221835U), which ensures the sealing performance of the rotary compensator during use through two sealing methods: sealing gasket sealing and compression sealing. Among them, the compression sealing structure is filled with flexible graphite, and when the sealing material is worn, the sealing performance is ensured by the compression mechanism. The rotary compensator is also provided with a limit mechanism to ensure the working performance of the rotary compensator, and a ball bearing is provided between the rotating cylinder and the outer seat to ensure the normal operation of the rotary compensator and reduce the friction between the rotating cylinder and the outer shell.

[0011] The Chinese Patent Literature Library discloses a high-pressure resistant rotary compensator for pipelines (CN221300514U), which comprises components such as threaded rods, extrusion springs and rotating components. When tightening multiple extrusion springs on the high-pressure resistant rotary compensator, the hand wheel on one side of the large gear ring is rotated, so that the large gear ring drives multiple small gears meshing on the inner ring surface to rotate synchronously in the same direction. At this time, the threaded rod fixed on one side of the small gear moves toward the large gear ring, thereby compressing and tightening the extrusion spring at one end of the threaded rod, avoiding the problem of tightening multiple threaded rods in sequence, resulting in a slow tightening process and low efficiency.

[0012] Metal spiral corrugated hose is a flexible pipe connection element made of metal material. The inner layer is composed of a series of interconnected thin-walled metal bellows, and the outer layer is made of metal wires wound into a mesh to strengthen the pressure-bearing capacity of the inner layer. The metal spiral corrugated hose itself is flexible and can rotate within a certain angle range, and can also be compressed and stretched within a certain length range. The metal spiral corrugated hose is greatly affected by installation and vibration. In the case of improper installation, the disadvantage of the thin wall of the metal spiral corrugated hose is more likely to be highlighted, and the welding point between the inner thin wall and the thick wall joint is prone to rupture due to the concentrated impact shear stress.

[0013] Considering the potential failure risk of the thin-walled structure of the metal wound corrugated hose, it is urgent to develop a high-pressure thick-walled compensator that can achieve flexible length and angle compensation in some hazardous gas circulation pipelines. However, there is no public literature report on thick-walled flexible compensators suitable for high-pressure fluids. At present, it is urgent to develop a multi-branch unequal height broken line high-pressure rigid pipe compensation structure and its use method. Summary of the invention

[0014] One technical problem to be solved by the present invention is to provide a multi-branch unequal height broken line type high-pressure rigid pipe compensation structure. Another technical problem to be solved by the present invention is to provide a method for using a multi-branch unequal height broken line type high-pressure rigid pipe compensation structure to avoid the risk of thin-walled metal wrapped corrugated hoses that are easily damaged and leaked.

[0015] The multi-branch unequal height broken line high-pressure hard pipe compensation structure of the present invention comprises a high-pressure sleeve compensator and a double right-angle hinge compensator; both the high-pressure sleeve compensator and the double right-angle hinge compensator are sealed with O-rings; the high-pressure sleeve compensator is extended and retracted along the axial direction for length compensation; the double right-angle hinge compensator is used for elevation and angle compensation.

[0016] Furthermore, the O-ring is a rubber sealing ring.

[0017] Furthermore, the high-pressure sleeve compensator is applicable to a pressure greater than 4 MPa.

[0018] Furthermore, the high-pressure sleeve compensator comprises a housing, a threaded flange I, a locking nut I, a sealing ring groove I, a support ring, a bolt I and a core tube; The outer shell is a tube body I with an annular protrusion I; an external thread I is arranged on the annular protrusion I; a threaded flange I is sleeved on the annular protrusion I through the external thread I, and the length of the external thread I is greater than the length of the threaded flange I; a group of threaded holes I are evenly distributed along the circumferential direction of the threaded flange I; a plurality of sealing ring grooves I are arranged in sequence from front to back at the rear section of the outer shell, an O-ring is installed in the sealing ring groove I, and a support ring is also sleeved on the rear section of the outer shell, and the sleeved support ring and the rear section of the outer shell are sealed by the O-ring; The core tube is a tube body II with an annular protrusion II, and an external thread II is arranged on the annular protrusion II; another threaded flange I is sleeved on the annular protrusion II through the external thread II, and the length of the external thread II is also greater than the length of the threaded flange I; another group of threaded holes I are evenly distributed along the circumferential direction of the threaded flange I; the inner cavity of the core tube is provided with a step hole, and another support ring is embedded in the front step hole, and the inner diameter of the embedded support ring matches the outer diameter of the shell, and the inner diameter of the rear step hole is the same as the inner diameter of the shell; the rear section of the shell is inserted into the front step hole of the core tube, and the support ring sleeved on the shell and the support ring embedded in the core tube are slidingly sealed by two support rings, and the rear section of the shell slides back and forth in the front section of the core tube, and the maximum sliding distance is D; A group of threaded holes I of the shell and another group of threaded holes I of the core tube have the same size and correspond to each other one by one, so that the holes are concentric; bolts I are passed through in sequence along the circumferential direction between the two groups of threaded holes I, and a section of external thread and two locking nuts I are provided at both ends of each bolt I, and the length of the external thread is greater than the sum of the length of the corresponding threaded hole I and the length of the two locking nuts I; the bolts I are locked and fixed by the locking nuts I to the relative position of the shell and the core tube; The shell of the high-pressure sleeve compensator expands and contracts axially after being matched with the core tube. The matching method is the base shaft system, in which the shell is the hole end and the core tube is the shaft end; the front end of the shell is connected to a pipe, and the rear end of the core tube is connected to another pipe to realize the axial connection of the two pipes. The axial compensation range is 0~D.

[0019] Furthermore, the double right-angle hinge compensator comprises a threaded flange II, a locking nut II, a bolt II, a convex stopper, a concave stopper and a sealing ring groove II; The male stopper is a pipe body III with an annular protrusion III, and an external thread III is arranged on the annular protrusion III; a threaded flange II is mounted on the annular protrusion III through the external thread III, and the length of the external thread III is greater than the length of the threaded flange II; a group of threaded holes II are evenly distributed along the circumferential direction of the threaded flange II; a sealing ring groove II is arranged on the protruding stopper of the male stopper, and an O-ring is installed in the sealing ring groove II; The concave stopper is a tube body IV with an annular protrusion IV, and an external thread IV is arranged on the annular protrusion IV; another threaded flange II is sleeved on the annular protrusion IV through the external thread IV, and the length of the external thread IV is also greater than the length of the threaded flange II; another group of threaded holes II are evenly distributed along the circumferential direction of the threaded flange II; A group of threaded holes II of the convex stopper and another group of threaded holes II of the concave stopper have the same size and correspond to each other one by one, so that the holes are concentric; bolts II are passed through in sequence along the circumferential direction between the two groups of threaded holes II, each bolt II is provided with an external thread that passes through front and back, and locking nuts II are provided at both ends of each bolt II; The convex stop and the concave stop of the double right-angle hinge compensator rotate along the axial direction after matching. The matching method is the base shaft system. The convex stop is the shaft end, and the concave stop is the hole end. The outer diameter of the convex stop is smaller than the inner diameter of the convex stop. The convex stop is inserted into the concave stop, and the convex stop of the convex stop and the concave stop of the concave stop are matched and connected, and sealed by an O-ring. The two threaded flanges II face each other, and the convex stop and the concave stop are fixed by a locking nut II. When the convex stop and the concave stop rotate relative to each other around the axial direction, the two threaded flanges II separate, the maximum separation gap is S, and the rotation angle corresponding to the maximum separation gap S is θ; The front end of the convex stopper is connected to one pipe, and the rear end of the concave stopper is connected to another pipe, so that the two pipes are axially connected, and the rotation angle compensation range of the two pipes is 0~θ.

[0020] The method for using the multi-branch unequal height broken line type high-pressure hard pipe compensation structure of the present invention comprises the following steps: S10. Design a single branch; The single branch is a straight pipe, a double right-angle hinge compensator I, a connecting elbow, a connecting straight pipe, a high-pressure sleeve compensator I, a connecting pipe I and a converging tee connected in sequence along the direction of airflow; the rear branch of the converging tee is a double right-angle hinge compensator II and a connecting pipe II connected in sequence along the direction of airflow; the front branch of the converging tee is a double right-angle hinge compensator III, a connecting pipe III, a high-pressure sleeve compensator II and a connecting pipe IV connected in sequence along the direction of airflow; S20. Install high-voltage sleeve compensator; Place the O-ring into the sealing ring groove Ⅰ of the core tube, set a support ring on the rear section of the shell, and insert another support ring into the step hole at the front section of the core tube; Insert the rear section of the shell into the front step hole of the core tube, install a threaded flange I on the external thread I of the shell and tighten it, and install another threaded flange I on the external thread II of the core tube; adjust the threaded flange I on the core tube to ensure that the two threaded flanges I are concentric with the hole; Between the two groups of threaded holes I, bolts I are passed through in sequence along the circumferential direction; Adjust the relative position between the shell and the core tube through the threaded flange Ⅰ of the core tube, set the maximum sliding distance between the shell and the core tube to D, tighten and fix the two locking nuts Ⅰ outside the bolt Ⅰ; realize the axial compensation range between the shell and the core tube to 0~D; In the axial compensation range of 0~D, adjust the distance between the shell and the core tube according to the compensation requirements, and then tighten and fix the two locking nuts Ⅰ on the inner side of the bolt Ⅰ to fix the high-pressure sleeve compensator; S30. Install double right-angle hinge compensators; Put the O-ring into the sealing ring groove II of the convex stop; Install a threaded flange II on the external thread III of the convex stop and tighten it, and install another threaded flange II on the external thread IV of the concave stop; Insert the male end into the female end, rotate the threaded flange II of the female end, and ensure that the two threaded flanges II are concentric with the holes; Between the two groups of threaded holes II, bolts II are passed through in sequence along the circumferential direction; Rotate the concave stopper, and the threaded flange II of the concave stopper moves back until the maximum separation gap between the convex stopper and the concave stopper is S, and tighten and fix the locking nut I at the front end of the bolt II; the rotation angle compensation range between the convex stopper and the concave stopper is 0~θ; Within the rotation angle compensation range of 0~θ, according to the compensation requirements, relatively rotate the convex stop and the concave stop, and then tighten and fix the locking nut I at the rear end of the bolt II to fix the double right-angle hinge compensator; S40. Install a single branch; S401. Loosen all high-voltage sleeve compensators and double right-angle hinge compensators; S402. One end of the double right-angle hinge compensator I is connected to the straight pipe, and the other end is connected to one end of the connecting elbow. After the connection is completed, the connecting elbow rotates along the axis through the double right-angle hinge compensator I; Continue to connect the other end of the bent pipe to one end of the connecting straight pipe, connect the other end of the connecting straight pipe to one end of the high-pressure sleeve compensator Ⅰ, and connect the other end of the high-pressure sleeve compensator to the connecting pipe Ⅰ; after the connection is completed, the connecting pipe Ⅰ rotates axially through the double right-angle hinge compensator Ⅰ and moves axially through the high-pressure sleeve compensator Ⅰ; S403. The rear branch of the converging tee is connected to the double right-angle hinge compensator II and the connecting pipe II in sequence; after the connection is completed, the converging tee rotates axially through the double right-angle hinge compensator II; S404. The front branch of the converging tee is connected to the double right-angle hinge compensator III, the connecting pipe III, the high-pressure sleeve compensator II and the connecting pipe IV in sequence; after the connection is completed, the connecting pipe III and the connecting pipe IV can be moved axially through the high-pressure sleeve compensator II; S405. Establish an XOY coordinate system, with the connecting pipe I located on the Y axis; confirm that the connecting pipe I can rotate around the X axis and move along the Y axis through the double right-angle hinge compensator I and the high-pressure sleeve compensator I; confirm that the converging tee can move along the X axis and rotate around the X axis through the double right-angle hinge compensators III and the double right-angle hinge compensator II on the front and rear sides and the high-pressure sleeve compensator II in front; Adjust the spatial position of the converging tee and the connecting pipe I, finally realize the converging of the single branch in the X direction and the Y direction, and fasten the converging tee and the connecting pipe I with the bolts of the threaded flange on the contact surface; S50. Assemble multiple branches; According to the needs, three single branches are established in order from front to back. The names of the three single branches are branch I, branch II and branch III. The connecting pipe II of branch I is connected to the connecting pipe IV of branch II, and the connecting pipe II of branch II is connected to the connecting pipe IV of branch III. In order to realize the confluence of multiple branches in the X direction and the Y direction, the double right-angle hinge compensators at both ends of the high-voltage sleeve compensators of each branch are rotated to stretch or shrink the high-voltage sleeve compensators; the double right-angle hinge compensators at both ends of the high-voltage sleeve compensators of each branch are rotated, one double right-angle hinge compensator is rotated by an angle of θ1, and the other double right-angle hinge compensator is rotated by an angle of θ2. The combination of the two double right-angle hinge compensators realizes the relative rotation of adjacent connected pipes, and the rotation angle θ=θ2-θ1; Perform iterative adjustments on the high-voltage sleeve compensators and double right-angle hinge compensators of each branch. Finally, fix the high-voltage sleeve compensators of each branch with locking nut I, and fix the double right-angle hinge compensators of each branch with locking nut II to complete the multi-branch assembly.

[0021] Furthermore, pipeline supports are provided at both ends of the multi-branch high-pressure sleeve compensator or the double right-angle hinge compensator to increase the height of the multi-branch.

[0022] The pipe fixing brackets of multi-branch, unequal height, and broken line high-pressure rigid pipes are fixed to the foundation, and length compensation is required between each pipe bracket. The high-pressure sleeve compensator of the multi-branch unequal height broken line high-pressure rigid pipe compensation structure of the present invention can realize the relative sliding of the core pipe and the outer shell along the axial direction, and the sliding distance can be adjusted according to the position of the locking nut. The use method of the multi-branch unequal height broken line high-pressure rigid pipe compensation structure of the present invention can install the high-pressure sleeve compensator between each pipe bracket, and realize the installation length error compensation by sliding the high-pressure sleeve compensator along the axial direction.

[0023] The central axes of multi-branch, unequal-height, broken-line high-pressure rigid pipes are not in the same horizontal plane and have a certain elevation difference. The multi-branch unequal-height broken-line high-pressure rigid pipe compensation structure and its use method of the present invention realize the rotation of the axis by adjusting the right-angle hinges at two different positions of the double right-angle hinge compensator. Combined with the high-pressure sleeve compensator, the pipeline telescopic docking can be flexibly realized, and the installation elevation and angle compensation of the high-pressure pipeline can be realized.

[0024] In short, the multi-branch unequal height broken line high-pressure rigid pipe compensation structure of the present invention is a thick-walled combined compensator, which can realize the installation length compensation of the high-pressure pipeline, and can also realize the installation elevation and angle compensation of the high-pressure pipeline. The use method of the multi-branch unequal height broken line high-pressure rigid pipe compensation structure of the present invention can assemble multiple branches as needed, is suitable for complex pipelines with high-pressure fluid circulation, and has engineering practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the spatial layout diagram of the piping system; Figure 2 It is a top view of the piping system; Figure 3 It is a side view of the piping system; Figure 4 It is a schematic diagram of the structure of a high-voltage sleeve compensator; Figure 5 This is a schematic diagram of the installation position of the high-voltage sleeve compensator; Figure 6 It is a schematic diagram of the structure of a double right-angle hinge compensator; Figure 7 This is a schematic diagram of the installation of a double right-angle hinge compensator; Figure 8 It is a schematic diagram of a single branch; Fig. 9 This is a schematic diagram of the compensation principle of a high-voltage sleeve compensator; Fig.10 Schematic diagram of the compensation principle of the double right-angle hinge compensator.

[0026] In the figure, 1. housing; 2. threaded flange Ⅰ; ​​3. locking nut Ⅰ; 4. sealing ring groove Ⅰ; 5. support ring; 6. bolt Ⅰ; 7. core tube; 8. threaded flange Ⅱ; 9. locking nut Ⅱ; 10. bolt Ⅱ; 11. convex stopper; 12. concave stopper; 13. sealing ring groove Ⅱ; 14. straight pipe; 15. double right-angle hinge compensator Ⅰ; 16. connecting elbow; 17. connecting straight pipe; 18. high-pressure sleeve compensator Ⅰ; 19. connecting pipeline Ⅰ; 20. converging tee; 21. connecting pipeline Ⅱ; 22. double right-angle hinge compensator Ⅱ; 23. double right-angle hinge compensator Ⅲ; 24. connecting pipeline Ⅲ; 25. high-pressure sleeve compensator Ⅱ; 26. connecting pipeline Ⅳ.

[0027] In the figure, the direction of the arrow is the flow direction of the high-pressure airflow; H is the height difference caused by the confluence of the pipelines. DETAILED DESCRIPTION

[0028] The following describes the implementation of the present invention through specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] like Figure 1~Figure 3 As shown, the multi-branch unequal height broken line high-pressure hard pipe compensation structure of the present invention includes a high-pressure sleeve compensator and a double right-angle hinge compensator; the high-pressure sleeve compensator and the double right-angle hinge compensator are both sealed with O-rings; the high-pressure sleeve compensator is extended and retracted along the axial direction for length compensation; the double right-angle hinge compensator is used for elevation and angle compensation.

[0030] Furthermore, the O-ring is a rubber sealing ring.

[0031] Furthermore, the high-pressure sleeve compensator is applicable to a pressure greater than 4 MPa.

[0032] Furthermore, if Figure 4 , Figure 5 As shown, the high-pressure sleeve compensator comprises a housing 1, a threaded flange Ⅰ2, a locking nut Ⅰ3, a sealing ring groove Ⅰ4, a support ring 5, a bolt Ⅰ6 and a core tube 7; The housing 1 is a tube body I with an annular protrusion I; an external thread I is provided on the annular protrusion I; a threaded flange I2 is sleeved on the annular protrusion I through the external thread I, and the length of the external thread I is greater than the length of the threaded flange I2; a group of threaded holes I are evenly distributed along the circumferential direction of the threaded flange I2; a plurality of sealing ring grooves I4 arranged in sequence from front to back are provided on the rear section of the housing 1, and an O-ring is installed in the sealing ring groove I4, and a support ring 5 is also sleeved on the rear section of the housing 1, and the sleeved support ring 5 and the rear section of the housing 1 are sealed by an O-ring; The core tube 7 is a tube body II with an annular protrusion II, and an external thread II is arranged on the annular protrusion II; another threaded flange I2 is sleeved on the annular protrusion II through the external thread II, and the length of the external thread II is also greater than the length of the threaded flange I2; another group of threaded holes I are evenly distributed along the circumferential direction of the threaded flange I2; the inner cavity of the core tube 7 is provided with a step hole, and another support ring 5 is embedded in the front step hole, and the inner diameter of the embedded support ring 5 matches the outer diameter of the shell 1, and the inner diameter of the rear step hole is the same as the inner diameter of the shell 1; the rear section of the shell 1 is inserted into the front step hole of the core tube 7, and the support ring 5 sleeved on the shell 1 and the support ring 5 embedded in the core tube 7 are slidingly sealed by two support rings 5, and the rear section of the shell 1 slides back and forth in the front section of the core tube 7, and the maximum sliding distance is D; A group of threaded holes I of the housing 1 and another group of threaded holes I of the core tube 7 are of the same size and correspond one to one, so that the holes are concentric; bolts I6 are passed through in sequence along the circumferential direction between the two groups of threaded holes I, and each bolt I6 is provided with an external thread and two locking nuts I3 at both ends, and the length of the external thread is greater than the sum of the length of the corresponding threaded hole I and the length of the two locking nuts I3; the bolts I6 are locked and fixed to the relative position of the housing 1 and the core tube 7 by the locking nuts I3; The shell 1 of the high-pressure sleeve compensator is expanded and contracted axially after being matched with the core tube 7, and the matching method is the base shaft system, wherein the shell 1 is the hole end and the core tube 7 is the shaft end; the front end of the shell 1 is connected to a pipeline, and the rear end of the core tube 7 is connected to another pipeline, so as to realize the axial connection of the two pipelines, and the axial compensation range is 0~D.

[0033] The support ring 5 of the shell 1 of the high-pressure sleeve compensator and the support ring 5 embedded in the core tube 7 can ensure that the high-pressure sleeve compensator will not pull the cylinder when it expands and contracts along the axis. At the same time, the wall thickness of the high-pressure sleeve compensator is much thicker than that of the metal wound corrugated hose. While meeting the axial compensation function, it can avoid the risk of thin-walled metal wound corrugated hose being easily damaged and leaked.

[0034] Furthermore, if Figure 6 , Figure 7 As shown, the double right-angle hinge compensator comprises a threaded flange II 8, a locking nut II 9, a bolt II 10, a convex stop 11, a concave stop 12 and a sealing ring groove II 13; The male stop 11 is a pipe body III with an annular protrusion III, and an external thread III is arranged on the annular protrusion III; a threaded flange II8 is mounted on the annular protrusion III through the external thread III, and the length of the external thread III is greater than the length of the threaded flange II8; the threaded flange II8 is provided with a group of threaded holes II evenly distributed along the circumferential direction; a sealing ring groove II13 is arranged on the protruding stop of the male stop 11, and an O-ring is installed in the sealing ring groove II13; The concave stop 12 is a tube body IV with an annular protrusion IV, and an external thread IV is arranged on the annular protrusion IV; another threaded flange II8 is sleeved on the annular protrusion IV through the external thread IV, and the length of the external thread IV is also greater than the length of the threaded flange II8; the threaded flange II8 is provided with another group of threaded holes II evenly distributed along the circumferential direction; A group of threaded holes II of the male stop 11 and another group of threaded holes II of the female stop 12 are of the same size and correspond one to one, so that the holes are concentric; bolts II 10 are passed through in sequence along the circumferential direction between the two groups of threaded holes II, each bolt II 10 is provided with an external thread that passes through front and back, and locking nuts II 9 are provided at both ends of each bolt II 10; The male stop 11 and the female stop 12 of the double right-angle hinge compensator rotate along the axial direction after being matched, and the matching method is the base shaft system, the male stop 11 is the shaft end, the female stop 12 is the hole end, and the outer diameter of the male stop 11 is smaller than the inner diameter of the male stop 11; the male stop 11 is inserted into the female stop 12, and the male stop 11 and the female stop 12 are matched and connected by the male stop 11 and the female stop 12, and are sealed by an O-ring, and the two threaded flanges II8 face each other, and the male stop 11 and the female stop 12 are fixed by a locking nut II9; When the male stop 11 and the female stop 12 rotate relative to each other around the axial direction, the two threaded flanges II8 separate, the maximum separation gap is S, and the rotation angle corresponding to the maximum separation gap S is θ; The front end of the convex stop 11 is connected to one pipe, and the rear end of the concave stop 12 is connected to another pipe, so that the two pipes are axially connected, and the rotation angle compensation range of the two pipes is 0~θ.

[0035] To perform angle compensation using a double right-angle hinge compensator, two right-angle elbow hinges must be constructed. The two right-angle hinges in different positions can achieve rotational alignment, and combined with a high-pressure sleeve compensator, pipeline docking can be flexibly achieved.

[0036] The method for using the multi-branch unequal height broken line type high-pressure hard pipe compensation structure of the present invention comprises the following steps: S10. Design a single branch; like Figure 8 As shown, a single branch is a straight pipe 14, a double right-angle hinge compensator Ⅰ15, a connecting elbow 16, a connecting straight pipe 17, a high-pressure sleeve compensator Ⅰ18, a connecting pipe Ⅰ19 and a converging tee 20 connected in sequence along the airflow direction; the rear branch of the converging tee 20 is a double right-angle hinge compensator Ⅱ22 and a connecting pipe Ⅱ21 connected in sequence along the airflow direction; the front branch of the converging tee 20 is a double right-angle hinge compensator Ⅲ23, a connecting pipe Ⅲ24, a high-pressure sleeve compensator Ⅱ25 and a connecting pipe Ⅳ26 connected in sequence along the airflow direction; S20. Install high-voltage sleeve compensator; Put the O-ring into the sealing ring groove Ⅰ4 of the core tube 7, set a support ring 5 on the rear section of the shell 1, and embed another support ring 5 in the step hole of the front section of the core tube 7; Insert the rear section of the shell 1 into the front step hole of the core tube 7, fit a threaded flange Ⅰ2 on the external thread Ⅰ of the shell 1 and tighten it, and fit another threaded flange Ⅰ2 on the external thread Ⅱ of the core tube 7; adjust the threaded flange Ⅰ2 on the core tube 7 to ensure that the two threaded flanges Ⅰ2 are concentric with the hole; Between the two groups of threaded holes I, bolts I6 are passed through in sequence along the circumferential direction; Adjust the relative position between the shell 1 and the core tube 7 through the threaded flange Ⅰ2 of the core tube 7, set the maximum sliding distance between the shell 1 and the core tube 7 to D, tighten and fix the two locking nuts Ⅰ3 outside the bolt Ⅰ6; realize the axial compensation range between the shell 1 and the core tube 7 to 0~D; In the axial compensation range 0~D, adjust the distance between the housing 1 and the core tube 7 according to the compensation requirements, and then tighten and fix the two locking nuts Ⅰ3 inside the bolt Ⅰ6 to fix the high-pressure sleeve compensator; S30. Install double right-angle hinge compensators; Place the O-ring into the sealing ring groove II 13 of the convex stop 11; A threaded flange II 8 is mounted on the external thread III of the male stop 11 and tightened, and another threaded flange II 8 is mounted on the external thread IV of the female stop 12; Insert the male stopper 11 into the female stopper 12, rotate the threaded flange Ⅱ8 of the female stopper 12, and ensure that the two threaded flanges Ⅱ8 are concentric with the holes; Between the two groups of threaded holes II, bolts II 10 are passed through in sequence along the circumferential direction; Rotate the concave stop 12, and the threaded flange II8 of the concave stop 12 retreats until the maximum separation gap between the convex stop 11 and the concave stop 12 is S, and tighten and fix the locking nut I3 at the front end of the bolt II10; realize the rotation angle compensation range between the convex stop 11 and the concave stop 12 is 0~θ; Within the rotation angle compensation range of 0~θ, according to the compensation requirements, relatively rotate the convex stop 11 and the concave stop 12, and then tighten and fix the locking nut Ⅰ3 at the rear end of the bolt Ⅱ10 to fix the double right-angle hinge compensator; S40. Install a single branch; S401. Loosen all high-voltage sleeve compensators and double right-angle hinge compensators; S402. One end of the double right-angle hinge compensator Ⅰ15 is connected to the straight pipe 14, and the other end is connected to one end of the connecting elbow 16. After the connection is completed, the connecting elbow 16 rotates along the axis through the double right-angle hinge compensator Ⅰ15; Continue to connect the other end of the bent pipe 16 to one end of the connecting straight pipe 17, the other end of the connecting straight pipe 17 to one end of the high-pressure sleeve compensator Ⅰ18, and the other end of the high-pressure sleeve compensator to the connecting pipe Ⅰ19; after the connection is completed, the connecting pipe Ⅰ19 rotates axially through the double right-angle hinge compensator Ⅰ15 and moves axially through the high-pressure sleeve compensator Ⅰ18; S403. The rear branch of the converging tee 20 is connected to the double right-angle hinge compensator Ⅱ22 and the connecting pipe Ⅱ21 in sequence; after the connection is completed, the converging tee 20 rotates axially through the double right-angle hinge compensator Ⅱ22; S404. The front branch of the converging tee 20 is connected to the double right-angle hinge compensator III 23, the connecting pipe III 24, the high-pressure sleeve compensator II 25 and the connecting pipe IV 26 in sequence; after the connection is completed, the connecting pipe III 24 and the connecting pipe IV 26 can be moved axially through the high-pressure sleeve compensator II 25; S405. Establish an XOY coordinate system, with the connecting pipe Ⅰ19 located on the Y axis; confirm that the connecting pipe Ⅰ19 can rotate around the X axis and move along the Y axis through the double right-angle hinge compensator Ⅰ15 and the high-pressure sleeve compensator Ⅰ18; confirm that the converging tee 20 can move along the X axis and rotate around the X axis through the double right-angle hinge compensators Ⅲ23 and the double right-angle hinge compensator Ⅱ22 on the front and rear sides and the high-pressure sleeve compensator Ⅱ25 in front; Adjust the spatial position of the converging tee 20 and the connecting pipe Ⅰ19, finally realize the converging of the single branch in the X direction and the Y direction, and fasten the converging tee 20 and the connecting pipe Ⅰ19 with bolts of the threaded flange on the contact surface; S50. Assemble multiple branches; According to the needs, three single branches are established in order from front to back. The names of the three single branches are branch I, branch II and branch III. The connecting pipe II21 of branch I is connected to the connecting pipe IV26 of branch II, and the connecting pipe II21 of branch II is connected to the connecting pipe IV26 of branch III. To achieve the convergence of multiple branches in the X and Y directions, Fig. 9 As shown, the double right-angle hinge compensators at both ends of each branch high-voltage sleeve compensator are rotated to stretch or shrink the high-voltage sleeve compensator; Fig.10 As shown, the double right-angle hinge compensators at both ends of each branch high-pressure sleeve compensator are rotated, one double right-angle hinge compensator is rotated by an angle of θ1, and the other double right-angle hinge compensator is rotated by an angle of θ2. The combination of the two double right-angle hinge compensators realizes the relative rotation of adjacent connected pipes, and the rotation angle θ=θ2-θ1; Perform iterative adjustments on the high-voltage sleeve compensators and double right-angle hinge compensators of each branch. Finally, fix the high-voltage sleeve compensators of each branch with locking nut I3, and fix the double right-angle hinge compensators of each branch with locking nut II9 to complete the multi-branch assembly.

[0037] Furthermore, pipeline supports are provided at both ends of the multi-branch high-pressure sleeve compensator or the double right-angle hinge compensator to increase the height of the multi-branch.

[0038] Example 1: This example is installed Figure 1~Figure 3 The multi-branch pipeline system shown in the figure has three branches, namely branch I, branch II and branch III, and the corresponding three air flow inlets are air flow inlet I, air flow inlet II and air flow inlet III; first install Figure 8 The single branch shown, the installation steps of the single branch are as follows: a1. According to Figure 2 , Figure 3 As shown, establish the XOY coordinate system, and then follow Figure 8 The shown connection is for each piping element in a single branch; a2. Adjust the high-pressure sleeve compensator Ⅱ25 of the X-axis so that the connecting end of the converging tee 20 on the Y-axis and the connecting pipe Ⅰ19 of the Y-axis are in the same plane, and the high-pressure sleeve compensator Ⅱ25 of the X-axis is not locked; a3. Adjust the rotation angle θ of the double right-angle hinge compensator Ⅰ15 on the Y-axis butt pipe, and adjust the double right-angle hinge compensator Ⅱ22 and the double right-angle hinge compensator Ⅲ23 on the X-axis, so that the connecting end of the confluence tee 20 on the Y-axis is coaxial with the connecting pipe Ⅰ19 on the Y-axis; a4. Adjust the high-pressure sleeve compensator Ⅰ18 of the Y-axis so that the connecting end of the converging tee 20 on the Y-axis is coaxially connected with the connecting pipe Ⅰ19 of the Y-axis; a5. Tighten all interface threads.

[0039] The installation method of the remaining single branches is the same as the above steps. Finally, the airflow outlets of the three branches are connected in sequence through Figure 2 The high-pressure sleeve compensator connection shown completes the multi-branch piping system installation.

[0040] Example 2: This example is disassembled as follows Figure 1~Figure 3 The multi-branch piping system shown in the figure; first remove the high-pressure sleeve compensators connected to the air flow outlets of the three branches to divide them into three single branches. The disassembly steps of the single branches are as follows: b1. Loosen all interface threads; b2. Adjust the high-pressure sleeve compensator Ⅰ18 of the Y axis, slide the housing 1 or the core tube 7 to separate the two; b3. Adjust the rotation angle θ of the double right-angle hinge compensator Ⅰ15 on the Y-axis butt pipe, so that the connection end of the confluence tee 20 on the Y-axis is dislocated and separated from the Y-axis connecting pipe Ⅰ19, and then disassemble the Y-axis pipe components; b4. Adjust the high-pressure sleeve compensator Ⅱ25 of the X-axis, slide the housing 1 or the core tube 7 to separate the two; b5. Disassemble the X-axis pipeline as a whole, and then disassemble it component by component.

Claims

1. A multi-branch unequal height broken line high-pressure hard pipe compensation structure, characterized in that: The high-pressure hard pipe compensation structure includes a high-pressure sleeve compensator and a double right-angle hinge compensator; both the high-pressure sleeve compensator and the double right-angle hinge compensator are sealed with O-rings; the high-pressure sleeve compensator is axially extended and retracted for length compensation; the double right-angle hinge compensator is used for elevation and angle compensation.

2. The multi-branch unequal height broken line high-pressure hard pipe compensation structure according to claim 1 is characterized in that: The O-shaped sealing ring is a rubber sealing ring.

3. The multi-branch unequal height broken line high pressure hard pipe compensation structure according to claim 1 is characterized in that: The high-pressure sleeve compensator is suitable for a pressure greater than 4 MPa.

4. The multi-branch unequal height broken line high-pressure hard pipe compensation structure according to claim 1 is characterized in that: The high-pressure sleeve compensator comprises a housing (1), a threaded flange I (2), a locking nut I (3), a sealing ring groove I (4), a support ring (5), a bolt I (6) and a core tube (7); The outer shell (1) is a tube body I having an annular protrusion I; an external thread I is provided on the annular protrusion I; a threaded flange I (2) is sleeved on the annular protrusion I through the external thread I, and the length of the external thread I is greater than the length of the threaded flange I (2); a group of threaded holes I are evenly distributed along the circumferential direction of the threaded flange I (2); a rear section of the outer shell (1) is provided with a plurality of sealing ring grooves I (4) arranged in sequence from front to back, an O-ring is installed in the sealing ring groove I (4), and a support ring (5) is also sleeved on the rear section of the outer shell (1), and the sleeved support ring (5) and the rear section of the outer shell (1) are sealed by the O-ring; The core tube (7) is a tube body II having an annular protrusion II, and an external thread II is arranged on the annular protrusion II; another threaded flange I (2) is sleeved on the annular protrusion II through the external thread II, and the length of the external thread II is also greater than the length of the threaded flange I (2); another group of threaded holes I are evenly distributed along the circumferential direction of the threaded flange I (2); the inner cavity of the core tube (7) is provided with a step hole, and another support ring (5) is embedded in the front step hole, and the inner diameter of the embedded support ring (5) matches the outer diameter of the outer shell (1), and the inner diameter of the rear step hole is the same as the inner diameter of the outer shell (1); the rear section of the outer shell (1) is inserted into the front step hole of the core tube (7), and the support ring (5) sleeved on the outer shell (1) and the support ring (5) embedded in the core tube (7) are slidingly sealed by two support rings (5), and the rear section of the outer shell (1) slides back and forth in the front section of the core tube (7), and the maximum sliding distance is D; A set of threaded holes I of the housing (1) and another set of threaded holes I of the core tube (7) are of the same size and correspond one to one, so that the holes are concentric. Bolts I (6) are passed through the two sets of threaded holes I in sequence along the circumferential direction. Each bolt I (6) is provided with an external thread and two locking nuts I (3) at both ends, and the length of the external thread is greater than the sum of the length of the corresponding threaded hole I and the length of the two locking nuts I (3). The bolts I (6) are locked and fixed by the locking nuts I (3) to the relative position of the housing (1) and the core tube (7). The shell (1) of the high-pressure sleeve compensator and the core tube (7) are adapted to expand and contract in the axial direction, and the adaption method is a base shaft system, wherein the shell (1) is a hole end and the core tube (7) is an axis end; the front end of the shell (1) is connected to a pipeline, and the rear end of the core tube (7) is connected to another pipeline, so that the two pipelines are axially connected, and the axial compensation range is 0~D.

5. The multi-branch unequal height broken line high-pressure hard pipe compensation structure according to claim 4 is characterized in that: The double right-angle hinge compensator comprises a threaded flange II (8), a locking nut II (9), a bolt II (10), a convex stopper (11), a concave stopper (12) and a sealing ring groove II (13); The male stopper (11) is a tube body III having an annular protrusion III, and the annular protrusion III is provided with an external thread III; a threaded flange II (8) is sleeved on the annular protrusion III through the external thread III, and the length of the external thread III is greater than the length of the threaded flange II (8); the threaded flange II (8) is provided with a group of threaded holes II evenly distributed along the circumferential direction; a sealing ring groove II (13) is provided on the protruding stopper of the male stopper (11), and an O-ring is installed in the sealing ring groove II (13); The concave stopper (12) is a tube body IV having an annular protrusion IV, and an external thread IV is arranged on the annular protrusion IV; another threaded flange II (8) is sleeved on the annular protrusion IV through the external thread IV, and the length of the external thread IV is also greater than the length of the threaded flange II (8); the threaded flange II (8) is provided with another group of threaded holes II evenly distributed along the circumferential direction; A group of threaded holes II of the male stop (11) and another group of threaded holes II of the female stop (12) are of the same size and correspond one to one, so that the holes are concentric; bolts II (10) are passed through in sequence along the circumferential direction between the two groups of threaded holes II, each bolt II (10) is provided with an external thread that passes through front and back, and locking nuts II (9) are provided at both front and rear ends of each bolt II (10); The male stop (11) and the female stop (12) of the double right-angle hinge compensator rotate along the axial direction after being matched, and the matching method is a base shaft system, the male stop (11) is the shaft end, the female stop (12) is the hole end, and the outer diameter of the male stop (11) is smaller than the inner diameter of the male stop (11); the male stop (11) is inserted into the female stop (12), and the male stop (11) and the female stop (12) are matched and connected by the male stop (11) and the female stop (12), and the O-ring is used for sealing, and the two threaded flanges II (8) face each other, and the male stop (11) and the female stop (12) are fixed by the locking nut II (9); When the convex stopper (11) and the concave stopper (12) rotate relative to each other about the axial direction, the two threaded flanges II (8) separate, the maximum separation gap is S, and the rotation angle corresponding to the maximum separation gap S is θ; The front end of the convex stop (11) is connected to one pipe, and the rear end of the concave stop (12) is connected to another pipe, so that the two pipes are axially connected, and the rotation angle compensation range of the two pipes is 0~θ.

6. A method for using a multi-branch unequal height broken line type high-pressure rigid pipe compensation structure, which is used for the multi-branch unequal height broken line type high-pressure rigid pipe compensation structure described in any one of claims 4 to 5, characterized in that: The following steps are involved: S10. Design a single branch; The single branch is a straight pipe (14), a double right-angle hinge compensator I (15), a connecting elbow (16), a connecting straight pipe (17), a high-pressure sleeve compensator I (18), a connecting pipe I (19) and a converging tee (20) connected in sequence along the direction of airflow; the rear branch of the converging tee (20) is a double right-angle hinge compensator II (22) and a connecting pipe II (21) connected in sequence along the direction of airflow; the front branch of the converging tee (20) is a double right-angle hinge compensator III (23), a connecting pipe III (24), a high-pressure sleeve compensator II (25) and a connecting pipe IV (26) connected in sequence along the direction of airflow; S20. Install high-voltage sleeve compensator; Place an O-ring into the sealing ring groove I (4) of the core tube (7), insert a support ring (5) into the rear section of the housing (1), and insert another support ring (5) into the front step hole of the core tube (7); Insert the rear section of the housing (1) into the front step hole of the core tube (7), fit a threaded flange I (2) onto the external thread I of the housing (1) and tighten it, and fit another threaded flange I (2) onto the external thread II of the core tube (7); adjust the threaded flange I (2) on the core tube (7) to ensure that the two threaded flanges I (2) are concentric with the holes; Bolts I (6) are passed through in sequence along the circumferential direction between the two sets of threaded holes I; The relative position between the housing (1) and the core tube (7) is adjusted by means of the threaded flange I (2) of the core tube (7), the maximum sliding distance between the housing (1) and the core tube (7) is set to D, and the two locking nuts I (3) on the outside of the bolt I (6) are tightened and fixed; the axial compensation range between the housing (1) and the core tube (7) is realized to be 0~D; Within the axial compensation range 0~D, adjust the distance between the housing (1) and the core tube (7) according to the compensation requirements, and then tighten and fix the two locking nuts I (3) inside the bolts I (6) to fix the high-pressure sleeve compensator; S30. Install double right-angle hinge compensators; Place the O-ring into the sealing ring groove II (13) of the convex stop (11); A threaded flange II (8) is mounted on the external thread III of the male stop (11) and tightened, and another threaded flange II (8) is mounted on the external thread IV of the female stop (12); Insert the male stopper (11) into the female stopper (12), and rotate the threaded flange II (8) of the female stopper (12) to ensure that the two threaded flanges II (8) are concentric with the holes; Bolts II (10) are passed through the two sets of threaded holes II in sequence along the circumferential direction; The concave stopper (12) is rotated, and the threaded flange II (8) of the concave stopper (12) is moved back until the maximum separation gap between the convex stopper (11) and the concave stopper (12) is S, and the locking nut I (3) at the front end of the bolt II (10) is tightened and fixed; the rotation angle compensation range between the convex stopper (11) and the concave stopper (12) is realized to be 0~θ; Within the rotation angle compensation range of 0 to θ, according to the compensation requirements, the convex stopper (11) and the concave stopper (12) are relatively rotated, and then the locking nut I (3) at the rear end of the bolt II (10) is tightened and fixed to fix the double right-angle hinge compensator; S40. Install a single branch; S401. Loosen all high-voltage sleeve compensators and double right-angle hinge compensators; S402. One end of the double right-angle hinge compensator Ⅰ (15) is connected to the straight pipe (14), and the other end is connected to one end of the connecting elbow (16). After the connection is completed, the connecting elbow (16) rotates along the axis through the double right-angle hinge compensator Ⅰ (15); Continue to connect the other end of the bent pipe (16) to one end of the connecting straight pipe (17), connect the other end of the connecting straight pipe (17) to one end of the high-pressure sleeve compensator I (18), and connect the other end of the high-pressure sleeve compensator to the connecting pipe I (19); after the connection is completed, the connecting pipe I (19) rotates axially through the double right-angle hinge compensator I (15) and moves axially through the high-pressure sleeve compensator I (18); S403. The rear branch of the converging tee (20) is connected to the double right-angle hinge compensator II (22) and the connecting pipe II (21) in sequence; after the connection is completed, the converging tee (20) is rotated axially through the double right-angle hinge compensator II (22); S404. The front branch of the converging tee (20) is connected to the double right-angle hinge compensator III (23), the connecting pipe III (24), the high-pressure sleeve compensator II (25) and the connecting pipe IV (26) in sequence; after the connection is completed, the connecting pipe III (24) and the connecting pipe IV (26) can both move axially through the high-pressure sleeve compensator II (25); S405. Establish an XOY coordinate system, with the connecting pipe I (19) located on the Y axis; confirm that the connecting pipe I (19) can be rotated around the X axis and moved along the Y axis through the double right-angle hinge compensator I (15) and the high-pressure sleeve compensator I (18); confirm that the converging tee (20) can be moved along the X axis and rotated around the X axis through the double right-angle hinge compensators III (23) on the front and rear sides, the double right-angle hinge compensator II (22) and the high-pressure sleeve compensator II (25) in front; Adjust the spatial position of the converging tee (20) and the connecting pipe I (19) to finally realize the converging of the single branch in the X direction and the Y direction, and fasten the converging tee (20) and the connecting pipe I (19) with bolts through the threaded flanges on the contact surfaces; S50. Assemble multiple branches; According to the needs, three single branches are established in order from front to back. The names of the three single branches are branch I, branch II and branch III. The connecting pipe II (21) of branch I is connected to the connecting pipe IV (26) of branch II, and the connecting pipe II (21) of branch II is connected to the connecting pipe IV (26) of branch III. In order to realize the confluence of multiple branches in the X direction and the Y direction, the double right-angle hinge compensators at both ends of the high-voltage sleeve compensators of each branch are rotated to stretch or shrink the high-voltage sleeve compensators; the double right-angle hinge compensators at both ends of the high-voltage sleeve compensators of each branch are rotated, one double right-angle hinge compensator is rotated by an angle of θ1, and the other double right-angle hinge compensator is rotated by an angle of θ2. The combination of the two double right-angle hinge compensators realizes the relative rotation of adjacent connected pipes, and the rotation angle θ=θ2-θ1; Perform iterative adjustments on the high-voltage sleeve compensators and double right-angle hinge compensators of each branch. Finally, fix the high-voltage sleeve compensators of each branch with locking nuts I (3) and fix the double right-angle hinge compensators of each branch with locking nuts II (9) to complete the multi-branch assembly.

7. The method for using the multi-branch unequal height broken line high-pressure hard pipe compensation structure according to claim 6 is characterized in that: Pipe supports are arranged at both ends of the multi-branch high-pressure sleeve compensator or double right-angle hinge compensator to increase the height of the multi-branch.

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