Straight pipe pressure balance type compensator

Abstract

The invention discloses a straight pipe pressure balance type compensator, and relates to the field of pressure balance, the straight pipe pressure balance type compensator comprises a bottom plate, the top of the bottom plate is fixedly connected with a support, the top of the support is fixedly connected with a communication pipeline, and one end of the communication pipeline is fixedly connected with a port; the end, away from the end opening, of the communicating pipeline is fixedly connected with a work compensation unit, the end, away from the communicating pipeline, of the work compensation unit is fixedly connected with a balance compensation unit, the outer surface of the support is fixedly connected with a cushioning unit, and a medium can flow in from the end opening firstly, then passes through the work compensation unit and finally passes through the balance compensation unit. The work compensation unit is used for absorbing axial displacement of the pipeline, the balance compensation unit plays a role in balancing internal pressure thrust, and when the pressure in the pipeline changes, the balance compensation unit can generate corresponding deformation, so that the compensator achieves pressure balance, the acting force on a pipeline fixing support is reduced, and the pipeline fixing support is protected. And meanwhile, the cushioning unit can effectively absorb vibration energy.

Description

Technical Field

[0001] The invention relates to the technical field of pressure balance, in particular to a straight tube pressure balance compensator. Background Art

[0002] The pressure-balanced compensator is an important pipeline accessory, mainly used to compensate for the deformation of the pipeline caused by thermal expansion and contraction, mechanical displacement and other factors, and to balance the thrust generated by the medium pressure in the pipeline. It is usually composed of working bellows, balancing bellows, connecting pipes, large pull rods and other components. The working bellows is responsible for absorbing the displacement of the pipeline, and the balancing bellows cleverly offsets the internal pressure thrust, ensuring that the compensator is in a balanced state as a whole when under pressure, reducing the force on the pipeline fixing bracket, thereby ensuring the safe and stable operation of the pipeline system. This type of compensator is widely used in pipeline systems in many fields such as thermal, chemical, and petroleum.

[0003] In a complex piping system, due to the influence of factors such as the pipeline direction, fixed bracket setting and fluid distribution, the working bellows at both ends of the straight pipe pressure balanced compensator may not be able to evenly absorb the axial displacement of the pipeline. The displacement of each part in the straight pipe is unevenly distributed, which may cause the working bellows on one side to deform too much and the other side to deform insufficiently, and the direction of the balanced pressure cannot be controlled. If the deformation direction is not the correct direction, the deformation amount will exceed the design range, thereby damaging the compensator. Summary of the invention

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve the technical problems is as follows: a straight pipe pressure balance type compensator described in the present invention comprises a bottom plate, a bracket is fixedly connected to the top of the bottom plate, a connecting pipe is fixedly connected to the top of the bracket, one end of the connecting pipe is fixedly connected to a port, an end of the connecting pipe away from the port is fixedly connected to a working compensation unit, an end of the working compensation unit away from the connecting pipe is fixedly connected to a balance compensation unit, and a shock absorbing unit is fixedly connected to the outer surface of the bracket; The balance compensation unit comprises a tube wall 1, a balance corrugated outer tube is fixedly connected to the tube wall 1, a balance corrugated inner tube is fixedly connected to the interior of the tube wall 1, a direction control mechanism is fixedly connected to the outer surface of the tube wall 1, an internal pressure balance mechanism is fixedly connected to the inner wall of the tube wall 1, a fixing plate 1 is evenly arranged on the outer surface of the tube wall 1, a large pull rod 1 is fixedly connected to the outer surface of the fixing plate 1, the outer surface of the fixing plate 1 is fixedly connected to the outer surface of the tube wall 1, a screw is threadedly connected to the side of the tube wall 1, the material of the balance corrugated inner tube is a nickel-based alloy, and the material of the balance corrugated outer tube is a fiber-reinforced composite material; The control mechanism includes a support frame, an end of the support frame away from the tube wall is fixedly connected to a support plate 1, the outer surface of the support plate 1 is fixedly connected to a guide rod, the outer surface of the guide rod is slidably connected to a sliding block, the outer surface of the sliding block is fixedly connected to a pull rod, the inner wall of the tube wall 1 is fixedly connected to a telescopic rod 1, the output end of the telescopic rod 1 is fixedly connected to a positioning column, the outer surface of the sliding block is provided with a positioning notch, the sliding block is provided with an inner groove, and the outer surface of the inner groove is fixedly connected to a scratch plate.

[0005] Preferably, both ends of the tube wall 1 are fixedly connected to the outer surface of the working compensation unit, and the outer surface of the support frame is fixedly connected to the outer surface of the tube wall 1.

[0006] Preferably, the outer surface of the locking notch is slidably connected to the outer surface of the locking column, and the outer surface of the scratch plate is slidably connected to the inner wall of the guide rod.

[0007] Preferably, the outer surface of the balancing corrugated inner tube is fixedly connected to the outer surface of the sliding block, and the outer surface of the balancing corrugated outer tube is fixedly connected to the outer surface of the sliding block.

[0008] Preferably, the internal pressure balancing mechanism includes an inner ring plate, the inner wall of the inner ring plate is evenly provided with pressure sensors, the outer surface of the pressure sensor is fixedly connected to the inner wall of the inner ring plate, a sealing gasket is provided on the inner side of the tube wall one, the outer surface of the pressure sensor is fixedly connected to an electric wire, the end of the electric wire away from the pressure sensor is fixedly connected to a telescopic rod two, the outer surface of the telescopic rod two is fixedly connected to the inner wall of the inner ring plate, the inner wall of the inner ring plate is rotatably connected to a limiting plate, and the outer surface of the limiting plate is fixedly connected to a sealing soft skin.

[0009] Preferably, the outer surface of the inner ring plate is fixedly connected to the outer surface of the tube wall, and the end of the sealing soft skin away from the limiting plate is fixedly connected to the inner wall of the inner ring plate.

[0010] Preferably, the working compensation unit includes a second pipe wall, one end of which is fixedly connected to a working bellows, one end of which is fixedly connected to a third pipe wall, the outer surface of which is fixedly connected to a fixing plate two, and the outer surface of which is fixedly connected to a large pull rod two.

[0011] Preferably, the tube wall three and the tube wall one are fixedly connected by screws, and the outer surface of the tube wall two is fixedly connected to an end of the connecting pipe away from the port.

[0012] Preferably, the shock absorbing unit includes a side plate, the bottom of the side plate is fixedly connected to the outer surface of the bracket, the inner wall of the side plate is fixedly connected to a damper, the outer surface of the damper is sleeved with a telescopic spring 1, the end of the damper away from the side plate is fixedly connected to the outer surface of the connecting pipe, the end of the telescopic spring 1 away from the side plate is fixedly connected to the outer surface of the connecting pipe, and the outer surface of the side plate is fixedly connected to an outward push mechanism.

[0013] Preferably, the push-out mechanism includes a servo motor, the outer surface of the servo motor is fixedly connected to the outer surface of the side plate, the output end of the servo motor is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a rotating column, the inner wall of the rotating column is fixedly connected to a telescopic spring 2, and one end of the telescopic spring 2 is fixedly connected to a push plate.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention sets a working compensation unit, and sets two layers of bellows, namely a balanced bellows outer tube and a balanced bellows inner tube. The material of the balanced bellows outer tube is a fiber-reinforced composite material, and the material of the balanced bellows inner tube is a nickel-based alloy. The fiber-reinforced composite material has high strength and elastic modulus, which can make the performance of the bellows more stable when subjected to axial displacement and internal pressure, while reducing the weight of the compensator. The straight tube pressure-balanced compensator of the nickel-based alloy bellows can effectively resist medium corrosion and extend the service life of the compensator.

[0015] 2. The present invention sets a control mechanism and a guide rod to limit the deformation direction of the balancing corrugated inner tube and the balancing corrugated outer tube, so that the deformation direction is the same as the direction of the internal thrust, thereby balancing the internal pressure thrust. At the same time, when the pressure in the straight tube is relatively small, the positioning column is in an extended state and inserted in the sliding block, and the deformation force of the balancing corrugated inner tube and the balancing corrugated outer tube will be limited to avoid the deterioration of the recovery performance caused by long-term large deformation. When the pressure in the straight tube is relatively large, the positioning column is retracted after a while, so that the deformation force of the balancing corrugated inner tube and the balancing corrugated outer tube is not limited by the sliding block, and the internal thrust can be better balanced.

[0016] 3. The present invention sets a direction control mechanism. When the sliding block is not restricted, the pull rod can be pulled to drive the sliding block to move. During the movement, the internal scratch plate will scratch the transport medium attached to the sliding rod, thereby preventing the attached medium from affecting the sliding block and causing it to move along the guide rod due to the deformation of the balancing corrugated inner tube and the balancing corrugated outer tube.

[0017] 4. The present invention sets an internal pressure balancing mechanism. Since the connection between the working correction unit and the balance correction unit will also receive the pressure generated by the medium transmission, the pressure of this part cannot be balanced and compensated. When the pressure at a certain place is too high, the pipe wall may be broken and the medium may leak. The pressure sensor on the inner ring plate will detect the pressure in real time. When the pressure is too high, the pressure sensor will extend the telescopic rod 2 to make the flow limiting plate produce a certain angle, so that the flow angle of the medium changes and the impact effect of the connection is weakened. At the same time, a plurality of sealing gaskets are arranged at the connection between the pipe wall 1 and the pipe wall 3, which also increases the sealing of the connection.

[0018] 5. The present invention sets a shock-absorbing unit, and the damper and the telescopic spring 1 have the function of absorbing vibration. When the medium enters the compensator from the connecting pipe and moves out from the connecting pipe at the other end, fluid pulsation and vibration will appear in the connecting pipe. The damper and the telescopic spring 1 can effectively absorb vibration energy, reduce damage to the compensator, and improve the stability and reliability of the compensator. At the same time, the servo motor can drive the rotating shaft to rotate and then the rotating column to rotate. The centrifugal force generated will cause the telescopic spring 2 to deform and drive the push plate to limit the deformation of the working bellows. In the process of contact between the push plate and the telescopic spring 2 and the working bellows, vibrations in the opposite direction to the vibrations generated by the medium pressure shock will be generated, so that the vibrations in the two directions offset each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a structural cross-sectional view of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the balance compensation unit of the present invention.

[0022] Figure 4 It is a structural cross-sectional view of the balance compensation unit of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the direction control mechanism of the present invention.

[0024] Figure 6 It is a partial structural schematic diagram of the direction control mechanism of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the internal pressure balancing mechanism of the present invention.

[0026] Figure 8 It is a partial structural schematic diagram of the internal pressure balancing mechanism of the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the work compensation unit of the present invention.

[0028] Fig.10 It is a structural schematic diagram of the shock absorbing unit of the present invention.

[0029] Fig.11 It is a structural schematic diagram of the extrapolation mechanism of the present invention.

[0030] In the figure: 1, bottom plate; 2, bracket; 3, connecting pipe; 4, port; 5, working compensation unit; 51, pipe wall 2; 52, working bellows; 53, pipe wall 3; 54, fixing plate 2; 55, large pull rod 2; 6, balance compensation unit; 61, pipe wall 1; 62, balance bellows outer pipe; 63, fixing plate 1; 64, large pull rod 1; 65, screw; 66, internal pressure balance mechanism; 661, inner ring plate; 662, pressure sensor; 663, sealing gasket; 664, wire; 665, telescopic rod 2; 666, current limiting plate; 66 7. Sealing soft leather; 67. Direction control mechanism; 671. Support frame; 672. Support plate 1; 673. Guide rod; 674. Sliding block; 675. Pull rod; 676. Telescopic rod 1; 677. Positioning column; 678. Positioning notch; 679. Inner groove; 6710. Scratch plate; 68. Balancing corrugated inner tube; 7. Shock-absorbing unit; 71. Side plate; 72. Damper; 73. Telescopic spring 1; 74. Outward push mechanism; 741. Servo motor; 742. Rotating shaft; 743. Rotating column; 744. Telescopic spring 2; 745. Push plate. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0032] Example 1, using Figure 1-Figure 11 A straight pipe pressure balance compensator according to one embodiment of the present invention is described below.

[0033] like Figure 1-Figure 2 As shown, a straight pipe pressure balance type compensator of the present invention comprises a bottom plate 1, a bracket 2 is fixedly connected to the top of the bottom plate 1, a connecting pipe 3 is fixedly connected to the top of the bracket 2, one end of the connecting pipe 3 is fixedly connected to a port 4, an end of the connecting pipe 3 away from the port 4 is fixedly connected to a working compensation unit 5, an end of the working compensation unit 5 away from the connecting pipe 3 is fixedly connected to a balance compensation unit 6, and a shock absorbing unit 7 is fixedly connected to the outer surface of the bracket 2; In the present invention, when the straight pipe is used for medium transmission, the medium will first flow in from the port 4, then pass through the working compensation unit 5 and finally pass through the balance compensation unit 6. The working compensation unit 5 is used to absorb the axial displacement of the pipeline, and the balance compensation unit 6 plays a role in balancing the internal pressure thrust. When the pressure in the pipeline changes, the balance compensation unit 6 will produce corresponding deformation to offset the internal pressure thrust exerted on the working compensation unit 5, so that the compensator itself achieves pressure balance and reduces the force on the pipeline fixing bracket 2. At the same time, the shock-absorbing unit 7 can effectively absorb vibration energy, reduce damage to the compensator, and improve the stability and reliability of the compensator.

[0034] The working compensation unit 5 is one of the core components of the compensator. There are usually two of them, symmetrically distributed at both ends of the balance compensation unit 6. Its main function is to absorb the axial displacement of the pipeline and adapt to the length changes of the pipeline caused by thermal expansion and contraction, mechanical vibration, etc. through its own elastic deformation.

[0035] The function of the balancing and compensating unit 6 is to balance the axial thrust generated by the medium pressure in the pipeline. When there is pressure in the pipeline, the balancing bellows will generate a force opposite to the internal pressure thrust exerted on the working bellows, so that the compensator as a whole remains balanced under the action of pressure and reduces the force on the pipeline fixing bracket.

[0036] like Figure 3-Figure 4 As shown, the balance compensation unit 6 includes a tube wall 61, a balance corrugated outer tube 62 is fixedly connected to the tube wall 61, a balance corrugated inner tube 68 is fixedly connected to the inside of the tube wall 61, a control mechanism 67 is fixedly connected to the outer surface of the tube wall 61, an internal pressure balance mechanism 66 is fixedly connected to the inner wall of the tube wall 61, a fixing plate 63 is evenly arranged on the outer surface of the tube wall 61, the outer surface of the fixing plate 63 is fixedly connected to the outer surface of the tube wall 61, a large pull rod 64 is fixedly connected to the outer surface of the fixing plate 63, a screw 65 is threadedly connected to the side of the tube wall 61, the material of the balance corrugated inner tube 68 is a nickel-based alloy, and the material of the balance corrugated outer tube 62 is a fiber-reinforced composite material; By setting up two layers of bellows, a balancing bellows outer tube 62 and a balancing bellows inner tube 68, the material of the balancing bellows outer tube 62 is a fiber-reinforced composite material, and the material of the balancing bellows inner tube 68 is a nickel-based alloy. The fiber-reinforced composite material has higher strength and elastic modulus, which can make the performance of the bellows more stable when subjected to axial displacement and internal pressure, while reducing the weight of the compensator. The straight tube pressure-balanced compensator of the nickel-based alloy bellows can effectively resist medium corrosion and extend the service life of the compensator.

[0037] like Figure 5-Figure 6As shown, the control mechanism 67 includes a support frame 671, and the end of the support frame 671 away from the tube wall 61 is fixedly connected to a support plate 672, the outer surface of the support plate 672 is fixedly connected to a guide rod 673, the outer surface of the guide rod 673 is slidably connected to a sliding block 674, the outer surface of the sliding block 674 is fixedly connected to a pull rod 675, the inner wall of the tube wall 61 is fixedly connected to a telescopic rod 676, the output end of the telescopic rod 676 is fixedly connected to a locking column 677, the outer surface of the sliding block 674 is provided with a locking notch 678, the sliding block 674 is provided with an inner groove 679, and the outer surface of the inner groove 679 is fixedly connected to a scratch plate 6710.

[0038] By setting up the guide rod 673, the deformation direction of the balancing bellows inner tube 68 and the balancing bellows outer tube 62 is limited. At the same time, when the pressure in the straight tube is relatively small, the positioning column 677 is in an extended state and inserted in the sliding block 674. The deformation force of the balancing bellows inner tube 68 and the balancing bellows outer tube 62 is limited to avoid the deterioration of the recovery performance caused by long-term large deformation. When the pressure in the straight tube is relatively large, the positioning column 677 is retracted after a while, so that the deformation force of the balancing bellows inner tube 68 and the balancing bellows outer tube 62 is not limited by the sliding block 674, and the internal thrust can be better balanced.

[0039] When the sliding block 674 is not restricted, the pull rod 675 can be pulled to drive the sliding block 674 to move. During the movement, the internal scratch plate 6710 will scratch the transport medium attached to the sliding rod, thereby preventing these attached media from affecting the sliding block 674 and causing it to move along the guide rod 673 due to the deformation of the balancing corrugated inner tube 68 and the balancing corrugated outer tube 62.

[0040] Both ends of the tube wall 61 are fixedly connected to the outer surface of the working compensation unit 5 , and the outer surface of the support frame 671 is fixedly connected to the outer surface of the tube wall 61 .

[0041] The outer surface of the locking notch 678 is slidably connected to the outer surface of the locking column 677 , and the outer surface of the scratch plate 6710 is slidably connected to the inner wall of the guide rod 673 .

[0042] The outer surface of the balancing bellows inner tube 68 is fixedly connected to the outer surface of the sliding block 674 , and the outer surface of the balancing bellows outer tube 62 is fixedly connected to the outer surface of the sliding block 674 .

[0043] like Figure 7-Figure 8As shown, the internal pressure balancing mechanism 66 includes an inner ring plate 661, the inner wall of the inner ring plate 661 is evenly provided with pressure sensors 662, the outer surface of the pressure sensor 662 is fixedly connected to the inner wall of the inner ring plate 661, a sealing gasket 663 is provided on the inner side of the tube wall 61, the outer surface of the pressure sensor 662 is fixedly connected to an electric wire 664, the end of the electric wire 664 away from the pressure sensor 662 is fixedly connected to a telescopic rod 2 665, the outer surface of the telescopic rod 2 665 is fixedly connected to the inner wall of the inner ring plate 661, the inner wall of the inner ring plate 661 is rotatably connected to a limiting plate 666, and the outer surface of the limiting plate 666 is fixedly connected to a sealing soft skin 667.

[0044] Since the connection between the working correction unit and the balance correction unit will also receive the pressure generated by the medium transmission, this part of the pressure cannot be balanced and compensated. When the pressure at a certain place is too high, the pipe wall may be broken and the medium may leak. The pressure sensor 662 on the inner ring plate 661 will detect the pressure in real time. When the pressure is too high, the pressure sensor 662 will extend the telescopic rod 2 665 to make the flow limiting plate 666 produce a certain angle, so that the flow angle of the medium is changed and the impact effect of the connection is weakened. At the same time, a plurality of sealing gaskets 663 are arranged at the connection between the pipe wall 1 61 and the pipe wall 3 53, which also increases the sealing of the connection.

[0045] The outer surface of the inner ring plate 661 is fixedly connected to the outer surface of the tube wall 61 , and one end of the sealing soft skin 667 away from the flow limiting plate 666 is fixedly connected to the inner wall of the inner ring plate 661 .

[0046] The specific workflow is as follows: During operation, when the medium moves to the balancing compensation unit 6, the medium pressure in the pipeline will cause the balancing corrugated inner tube 68 and the balancing corrugated outer tube 62 to deform. By setting the guide rod 673, the deformation direction of the balancing corrugated inner tube 68 and the balancing corrugated outer tube 62 is limited, so that the deformation direction is the same as the direction of the internal thrust, thereby playing a role in balancing the internal pressure thrust. At the same time, when the pressure in the straight pipe is relatively small, the positioning column 677 is in an extended state and inserted in the sliding block 674. The deformation force of the balancing corrugated inner tube 68 and the balancing corrugated outer tube 62 will be limited to avoid long-term large deformation. The recovery performance becomes worse. When the pressure in the straight pipe is relatively high, the positioning column 677 is retracted for a while, so that the deformation force of the balancing corrugated inner tube 68 and the balancing corrugated outer tube 62 is not restricted by the sliding block 674, and the internal thrust can be better balanced. At the same time, when the sliding block 674 is not restricted, the pull rod 675 can be pulled to drive the sliding block 674 to move. During the movement, the internal scratch plate 6710 will scratch the transport medium attached to the sliding rod, thereby preventing these attached media from affecting the sliding block 674 due to the deformation of the balancing corrugated inner tube 68 and the balancing corrugated outer tube 62 and moving along the guide rod 673.

[0047] Embodiment 2, use Figure 1-Figure 11 A straight pipe pressure balance compensator according to one embodiment of the present invention is described below.

[0048] like Fig. 9 As shown, a straight tube pressure balanced compensator of the present invention is based on the first embodiment, and the working compensation unit 5 includes a pipe wall 2 51, one end of the pipe wall 2 51 is fixedly connected to a working bellows 52, one end of the working bellows 52 is fixedly connected to a pipe wall 3 53, the outer surface of the pipe wall 3 53 is fixedly connected to a fixing plate 2 54, and the outer surface of the fixing plate 2 54 is fixedly connected to a large pull rod 2 55.

[0049] The working bellows 52 is used to absorb the axial displacement of the pipeline.

[0050] The tube wall three 53 and the tube wall one 61 are fixedly connected by screws 65 , and the outer surface of the tube wall two 51 is fixedly connected to an end of the communicating pipe 3 away from the port 4 .

[0051] like Fig.10 As shown, the shock absorbing unit 7 includes a side plate 71, the bottom of the side plate 71 is fixedly connected to the outer surface of the bracket 2, the inner wall of the side plate 71 is fixedly connected to a damper 72, the outer surface of the damper 72 is sleeved with a telescopic spring 73, the end of the damper 72 away from the side plate 71 is fixedly connected to the outer surface of the connecting pipe 3, the end of the telescopic spring 73 away from the side plate 71 is fixedly connected to the outer surface of the connecting pipe 3, and the outer surface of the side plate 71 is fixedly connected to an outward push mechanism 74.

[0052] like Fig.11 As shown, the damper 72 and the telescopic spring 73 have the function of absorbing vibration. When the medium enters the compensator from the connecting pipe 3 and moves out of the connecting pipe 3 at the other end, fluid pulsation and vibration will appear in the connecting pipe 3. The damper 72 and the telescopic spring 73 can effectively absorb the vibration energy, reduce the damage to the compensator, and improve the stability and reliability of the compensator.

[0053] The push-out mechanism 74 includes a servo motor 741, the outer surface of the servo motor 741 is fixedly connected to the outer surface of the side plate 71, the output end of the servo motor 741 is fixedly connected to a rotating shaft 742, the outer surface of the rotating shaft 742 is fixedly connected to a rotating column 743, the inner wall of the rotating column 743 is fixedly connected to a telescopic spring 744, and one end of the telescopic spring 744 is fixedly connected to a push plate 745.

[0054] The servo motor 741 can drive the rotating shaft 742 to rotate and then the rotating column 743 to rotate. The centrifugal force generated will cause the telescopic spring 2 744 to deform and drive the push plate 745 to limit the deformation of the working bellows 52. When the push plate 745 and the telescopic spring 2 744 are in contact with the working bellows 52, vibrations in the opposite direction to the vibrations generated by the medium pressure shock will be generated, so that the vibrations in the two directions offset each other.

[0055] The specific workflow is as follows: During operation, the working bellows 52 is used to absorb the axial displacement of the pipeline. During this process, the servo motor 741 can drive the rotating shaft 742 to rotate and then rotate the rotating column 743. The centrifugal force generated will cause the telescopic spring 2 744 to deform, and drive the push plate 745 to limit the deformation of the working bellows 52. During the contact between the push plate 745 and the telescopic spring 2 744 and the working bellows 52, vibrations in the opposite direction to the vibrations generated by the medium pressure shock will be generated, so that the vibrations in the two directions offset each other. At the same time, when the medium enters the compensator from the connecting pipe 3 and moves out of the connecting pipe 3 at the other end, fluid pulsation, vibration, etc. will appear in the connecting pipe 3, and the damper 72 and the telescopic spring 1 73 can effectively absorb the vibration energy.

[0056] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A straight pipe pressure balance compensator, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a bracket (2), the top of the bracket (2) is fixedly connected to a connecting pipe (3), one end of the connecting pipe (3) is fixedly connected to a port (4), the end of the connecting pipe (3) away from the port (4) is fixedly connected to a working compensation unit (5), the end of the working compensation unit (5) away from the connecting pipe (3) is fixedly connected to a balancing compensation unit (6), and the outer surface of the bracket (2) is fixedly connected to a shock absorbing unit (7); The balancing compensation unit (6) comprises a tube wall (61), a balancing corrugated outer tube (62) is fixedly connected to the tube wall (61), a balancing corrugated inner tube (68) is fixedly connected inside the tube wall (61), a direction control mechanism (67) is fixedly connected to the outer surface of the tube wall (61), an internal pressure balancing mechanism (66) is fixedly connected to the inner wall of the tube wall (61), a fixing plate (63) is evenly arranged on the outer surface of the tube wall (61), a large pull rod (64) is fixedly connected to the outer surface of the fixing plate (63), the outer surface of the fixing plate (63) is fixedly connected to the outer surface of the tube wall (61), a screw (65) is threadedly connected to the side surface of the tube wall (61), the balancing corrugated inner tube (68) is made of a nickel-based alloy, and the balancing corrugated outer tube (62) is made of a fiber-reinforced composite material; The control mechanism (67) comprises a support frame (671), one end of the support frame (671) away from the tube wall (61) is fixedly connected to a support plate (672), the outer surface of the support plate (672) is fixedly connected to a guide rod (673), the outer surface of the guide rod (673) is slidably connected to a sliding block (674), the outer surface of the sliding block (674) is fixedly connected to a pull rod (675), the inner wall of the tube wall (61) is fixedly connected to a telescopic rod (676), the output end of the telescopic rod (676) is fixedly connected to a locking column (677), the outer surface of the sliding block (674) is provided with a locking notch (678), the sliding block (674) is provided with an inner groove (679), and the outer surface of the inner groove (679) is fixedly connected to a scratch plate (6710).

2. A straight pipe pressure balanced compensator according to claim 1, characterized in that: The two ends of the tube wall 1 (61) are fixedly connected to the outer surface of the working compensation unit (5), and the outer surface of the support frame (671) is fixedly connected to the outer surface of the tube wall 1 (61).

3. A straight pipe pressure balanced compensator according to claim 1, characterized in that: The outer surface of the locking notch (678) is slidably connected to the outer surface of the locking column (677), and the outer surface of the scratch plate (6710) is slidably connected to the inner wall of the guide rod (673).

4. A straight pipe pressure balanced compensator according to claim 1, characterized in that: The outer surface of the balancing corrugated inner tube (68) is fixedly connected to the outer surface of the sliding block (674), and the outer surface of the balancing corrugated outer tube (62) is fixedly connected to the outer surface of the sliding block (674).

5. The straight pipe pressure balanced compensator according to claim 1, characterized in that: The internal pressure balancing mechanism (66) comprises an inner ring plate (661), the inner wall of the inner ring plate (661) is evenly provided with pressure sensors (662), the outer surface of the pressure sensor (662) is fixedly connected to the inner wall of the inner ring plate (661), the inner side of the tube wall (61) is provided with a sealing gasket (663), the outer surface of the pressure sensor (662) is fixedly connected to an electric wire (664), the end of the electric wire (664) away from the pressure sensor (662) is fixedly connected to a telescopic rod (665), the outer surface of the telescopic rod (665) is fixedly connected to the inner wall of the inner ring plate (661), the inner wall of the inner ring plate (661) is rotatably connected to a limiting plate (666), and the outer surface of the limiting plate (666) is fixedly connected to a sealing soft skin (667).

6. A straight pipe pressure balanced compensator according to claim 5, characterized in that: The outer surface of the inner ring plate (661) is fixedly connected to the outer surface of the tube wall (61), and one end of the sealing soft skin (667) away from the flow limiting plate (666) is fixedly connected to the inner wall of the inner ring plate (661).

7. The straight pipe pressure balanced compensator according to claim 1, characterized in that: The working compensation unit (5) comprises a second pipe wall (51), one end of which is fixedly connected to a working bellows (52), one end of which is fixedly connected to a third pipe wall (53), the outer surface of which is fixedly connected to a second fixing plate (54), and the outer surface of which is fixedly connected to a second large pull rod (55).

8. A straight pipe pressure balanced compensator according to claim 7, characterized in that: The tube wall three (53) and the tube wall one (61) are fixedly connected by means of screws (65), and the outer surface of the tube wall two (51) is fixedly connected to an end of the connecting pipe (3) away from the port (4).

9. The straight pipe pressure balanced compensator according to claim 1, characterized in that: The shock absorbing unit (7) comprises a side plate (71), the bottom of the side plate (71) is fixedly connected to the outer surface of the bracket (2), the inner wall of the side plate (71) is fixedly connected to a damper (72), the outer surface of the damper (72) is sleeved with a telescopic spring (73), one end of the damper (72) away from the side plate (71) is fixedly connected to the outer surface of the connecting pipe (3), one end of the telescopic spring (73) away from the side plate (71) is fixedly connected to the outer surface of the connecting pipe (3), and the outer surface of the side plate (71) is fixedly connected to an outward pushing mechanism (74).

10. A straight pipe pressure balanced compensator according to claim 9, characterized in that: The push-out mechanism (74) comprises a servo motor (741), the outer surface of the servo motor (741) is fixedly connected to the outer surface of the side plate (71), the output end of the servo motor (741) is fixedly connected to a rotating shaft (742), the outer surface of the rotating shaft (742) is fixedly connected to a rotating column (743), the inner wall of the rotating column (743) is fixedly connected to a second telescopic spring (744), and one end of the second telescopic spring (744) is fixedly connected to a push plate (745).

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