A straight pipe pressure balance type compensator

Abstract

The present invention discloses a straight pipe pressure balance type compensator, which relates to the field of pressure balance. It includes a bottom plate, a bracket is fixedly connected to the top of the bottom plate, a communicating pipe is fixedly connected to the top of the bracket, a port is fixedly connected to one end of the communicating pipe, a working compensation unit is fixedly connected to the end of the communicating pipe away from the port, a balance compensation unit is fixedly connected to the end of the working compensation unit away from the communicating pipe, and a shock absorption unit is fixedly connected to the outer surface of the bracket. The medium will first flow in from the port, then pass through the working compensation unit and finally pass through the balance compensation unit. The working compensation unit is used to absorb the axial displacement of the pipeline, while the balance compensation unit plays the role of balancing the internal pressure thrust. When the pressure in the pipeline changes, the balance compensation unit will generate corresponding deformation, so that the compensator itself achieves pressure balance, reduces the force on the pipeline fixed support, and at the same time the shock absorption unit can effectively absorb the 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;

[0005] 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;

[0006] The steering mechanism includes a support frame. One end of the support frame away from the first pipe wall is fixedly connected with a first support plate. The outer surface of the first support plate is fixedly connected with a guide rod. A sliding block is slidably connected to the outer surface of the guide rod. A pull rod is fixedly connected to the outer surface of the sliding block. A first telescopic rod is fixedly connected to the inner wall of the first pipe wall. The output end of the first telescopic rod is fixedly connected with a clamping column. A clamping notch is arranged on the outer surface of the sliding block. An inner groove is arranged in the sliding block. A rubbing plate is fixedly connected to the outer surface of the inner groove.

[0007] Preferably, both ends of the first pipe wall are fixedly connected with the outer surface of the working compensation unit, and the outer surface of the support frame is fixedly connected with the outer surface of the first pipe wall.

[0008] Preferably, the outer surface of the clamping notch is slidably connected with the outer surface of the clamping column, and the outer surface of the rubbing plate is slidably connected with the outer wall of the guide rod.

[0009] Preferably, the outer surface of the balanced corrugated inner pipe is fixedly connected with the outer surface of the sliding block, and the outer surface of the balanced corrugated outer pipe is fixedly connected with the outer surface of the sliding block.

[0010] Preferably, the internal pressure balance mechanism includes an inner ring plate. Pressure sensors are evenly arranged on the inner wall of the inner ring plate. The outer surface of the pressure sensors is fixedly connected with the inner wall of the inner ring plate. A sealing gasket is arranged on the inner side of the first pipe wall. A wire is fixedly connected to the outer surface of the pressure sensors. One end of the wire away from the pressure sensors is fixedly connected with a second telescopic rod. The outer surface of the second telescopic rod is fixedly connected with the inner wall of the inner ring plate. A current-limiting plate is rotatably connected to the inner wall of the inner ring plate. A sealing soft skin is fixedly connected to the outer surface of the current-limiting plate.

[0011] Preferably, the outer surface of the inner ring plate is fixedly connected with the outer surface of the first pipe wall, and one end of the sealing soft skin away from the current-limiting plate is fixedly connected with the inner wall of the inner ring plate.

[0012] Preferably, the working compensation unit includes a second pipe wall. One end of the second pipe wall is fixedly connected with a working bellows. The end of the working bellows away from the second pipe wall is fixedly connected with a third pipe wall. A second fixing plate is fixedly connected to the outer surface of the third pipe wall. A second large pull rod is fixedly connected to the outer surface of the second fixing plate.

[0013] Preferably, the third pipe wall and the first pipe wall are fixedly connected by screws, and the outer surface of the second pipe wall is fixedly connected with one end of the connecting pipe away from the port.

[0014] Preferably, the shock absorption unit includes a side plate, the bottom of the side plate is fixedly connected to the outer surface of the bracket, a damper is fixedly connected to the inner wall of the side plate, a first telescopic spring is sleeved on the outer surface of the damper, one end of the damper away from the side plate is fixedly connected to the outer surface of the communication pipe, one end of the first telescopic spring away from the side plate is fixedly connected to the outer surface of the communication pipe, and an outer pushing mechanism is fixedly connected to the outer surface of the side plate.

[0015] Preferably, the outer pushing 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, a rotating column is fixedly connected to the outer surface of the rotating shaft, a second telescopic spring is fixedly connected to the inner wall of the rotating column, and a push plate is fixedly connected to one end of the second telescopic spring.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. By setting the working compensation unit, two layers of bellows, namely the balance corrugated outer pipe and the balance corrugated inner pipe, are provided. The material of the balance corrugated outer pipe is fiber-reinforced composite material, and the material of the balance corrugated inner pipe is nickel-based alloy. The fiber-reinforced composite material has high strength and elastic modulus, which can make the bellows more stable in bearing axial displacement and internal pressure, and at the same time reduce the weight of the compensator. The straight pipe pressure balance type compensator of the nickel-based alloy bellows can effectively resist medium corrosion and extend the service life of the compensator.

[0018] 2. By setting the direction control mechanism, through the setting of the guide rod, the deformation directions of the balance corrugated inner pipe and the balance corrugated outer pipe are restricted, so that the deformation direction is the same as the direction of the internal thrust force, thereby playing a role in balancing the internal pressure thrust force. At the same time, when the pressure in the straight pipe is small, the clamping column is in the extended state and inserted into the sliding block, and the deformation force of the balance corrugated inner pipe and the balance corrugated outer pipe will be restricted to avoid the deterioration of the recovery performance caused by long-term large deformation. When the pressure in the straight pipe is large, the first telescopic member will retract the clamping column, so that the deformation force of the balance corrugated inner pipe and the balance corrugated outer pipe is not restricted by the sliding block, and the internal thrust force can be better balanced.

[0019] 3. By setting the 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 scraping plate will scrape the transportation medium adhered to the sliding rod, avoiding the influence of these adhered media on the movement of the sliding block along the guide rod due to the deformation of the balance corrugated inner pipe and the balance corrugated outer pipe.

[0020] 4. By providing an internal pressure balancing mechanism in the present invention, since the connection between the working correction unit and the balance correction unit is also subject to the pressure generated by the medium transmission, the pressure in this part cannot be balanced and compensated. When the pressure at a certain point is too high, it may cause the rupture of the pipe wall and the leakage of the medium. 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 cause the second telescopic rod to extend, thereby causing the flow limiting plate to form a certain angle, changing the flow angle of the medium, and thus weakening the impact effect at the connection. At the same time, a plurality of sealing gaskets are provided at the connection between the first pipe wall and the third pipe wall, which also increases the sealing performance of the connection.

[0021] 5. By providing a shock absorption unit in the present invention, the damper and the first telescopic spring have the function of absorbing vibrations. When the medium enters the compensator from the connecting pipe and exits from the connecting pipe at the other end, fluid pulsation, vibration, etc. will occur in the connecting pipe. The damper and the first telescopic spring can effectively absorb the vibration energy, reduce the damage to the compensator, and improve the stability and reliability of the compensator. At the same time, the servo motor can drive the rotation of the rotating shaft, thereby causing the rotating column to rotate. The centrifugal force generated will cause the second telescopic spring to deform, and drive the push plate to limit the deformation of the working bellows. During the contact between the push plate and the second telescopic spring and the working bellows, vibrations in the direction opposite to the vibrations generated by the medium pressure impact will be generated, so that the vibrations in the two directions cancel each other out. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention.

[0023] Figure 2 is a cross-sectional structural view of the present invention.

[0024] Figure 3 is a schematic structural diagram of the balance compensation unit of the present invention.

[0025] Figure 4 is a cross-sectional structural view of the balance compensation unit of the present invention.

[0026] Figure 5 is a schematic structural diagram of the direction control mechanism of the present invention.

[0027] Figure 6 is a partial schematic structural diagram of the direction control mechanism of the present invention.

[0028] Figure 7 is a schematic structural diagram of the internal pressure balancing mechanism of the present invention.

[0029] Figure 8 is a partial schematic structural diagram of the internal pressure balancing mechanism of the present invention.

[0030] Figure 9 is a schematic structural diagram of the working compensation unit of the present invention.

[0031] Figure 10 It is a schematic structural diagram of the shock absorption unit of the present invention.

[0032] Figure 11 It is a schematic structural diagram of the extrapolation mechanism of the present invention.

[0033] In the figure: 1, bottom plate; 2, bracket; 3, connecting pipe; 4, port; 5, working compensation unit; 51, second pipe wall; 52, working bellows; 53, third pipe wall; 54, second fixing plate; 55, second large pull rod; 6, balance compensation unit; 61, first pipe wall; 62, balance corrugated outer pipe; 63, first fixing plate; 64, first large pull rod; 65, screw; 66, internal pressure balance mechanism; 661, inner ring plate; 662, pressure sensor; 663, sealing gasket; 664, electric wire; 665, second telescopic rod; 666, flow limiting plate; 667, sealing soft skin; 67, direction control mechanism; 671, support frame; 672, first support plate; 673, guide rod; 674, sliding block; 675, pull rod; 676, first telescopic rod; 677, clamping column; 678, clamping notch; 679, inner groove; 6710, rubbing plate; 68, balance corrugated inner pipe; 7, shock absorption unit; 71, side plate; 72, damper; 73, first telescopic spring; 74, extrapolation mechanism; 741, servo motor; 742, rotating shaft; 743, rotating column; 744, second telescopic spring; 745, push plate. Specific embodiments

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0035] Embodiment 1, use Figures 1-11 A straight pipe pressure balance type compensator according to an embodiment of the present invention will be described as follows.

[0036] As Figures 1-2 shown, a straight pipe pressure balance type compensator of the present invention includes 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, a port 4 is fixedly connected to one end of the connecting pipe 3, a working compensation unit 5 is fixedly connected to the end of the connecting pipe 3 away from the port 4, a balance compensation unit 6 is fixedly connected to the end of the working compensation unit 5 away from the connecting pipe 3, and a shock absorption unit 7 is fixedly connected to the outer surface of the bracket 2;

[0037] In the present invention, when the straight pipe is used for the transmission of the medium, the medium first flows in from port 4, then passes through the working compensation unit 5 and finally through the balance compensation unit 6. The working compensation unit 5 is used to absorb the axial displacement of the pipeline, while the balance compensation unit 6 plays the role of balancing the internal pressure thrust. When the pressure in the pipeline changes, the balance compensation unit 6 will generate corresponding deformation to offset the internal pressure thrust received by the working compensation unit 5, so as to achieve pressure balance of the compensator itself, reduce the force on the pipeline fixed support 2, and at the same time, the shock absorption unit 7 can effectively absorb vibration energy, reduce the damage to the compensator, and improve the stability and reliability of the compensator.

[0038] The working compensation unit 5 is one of the core components of the compensator. There are usually two, 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 change of the pipeline caused by thermal expansion and contraction, mechanical vibration, etc. through its own elastic deformation.

[0039] The function of the balance compensation unit 6 is to balance the axial thrust generated by the medium pressure in the pipeline. When there is pressure in the pipeline, the balance bellows will generate a force opposite to the internal pressure thrust received by the working bellows, so that the whole compensator remains balanced under the action of pressure and reduces the force on the pipeline fixed support.

[0040] As Figures 3-4 shown, the balance compensation unit 6 includes a pipe wall 61. A balance corrugated outer pipe 62 is fixedly connected to the pipe wall 61. A balance corrugated inner pipe 68 is fixedly connected to the inside of the pipe wall 61. A direction control mechanism 67 is fixedly connected to the outer surface of the pipe wall 61. An internal pressure balance mechanism 66 is fixedly connected to the inner wall of the pipe wall 61. Fixing plates 63 are evenly arranged on the outer surface of the pipe wall 61. The outer surface of the fixing plate 63 is fixedly connected to the outer surface of the pipe 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 surface of the pipe wall 61. The material of the balance corrugated inner pipe 68 is nickel-based alloy, and the material of the balance corrugated outer pipe 62 is fiber-reinforced composite material;

[0041] By providing two layers of bellows, namely the balance corrugated outer pipe 62 and the balance corrugated inner pipe 68, the material of the balance corrugated outer pipe 62 is fiber-reinforced composite material, and the material of the balance corrugated inner pipe 68 is nickel-based alloy. The fiber-reinforced composite material has high strength and elastic modulus, which can make the bellows more stable in bearing axial displacement and internal pressure, and at the same time reduce the weight of the compensator. The straight pipe pressure balance type compensator with nickel-based alloy bellows can effectively resist medium corrosion and extend the service life of the compensator.

[0042] As Figures 5-6As shown, the steering mechanism 67 includes a support frame 671. One end of the support frame 671 away from the pipe wall 61 is fixedly connected with a first support plate 672. The outer surface of the first support plate 672 is fixedly connected with a guide rod 673. The outer surface of the guide rod 673 is slidably connected with a sliding block 674. The outer surface of the sliding block 674 is fixedly connected with a pull rod 675. The inner wall of the pipe wall 61 is fixedly connected with a first telescopic rod 676. The output end of the first telescopic rod 676 is fixedly connected with a positioning post 677. A positioning notch 678 is arranged on the outer surface of the sliding block 674. An inner groove 679 is arranged in the sliding block 674. The outer surface of the inner groove 679 is fixedly connected with a scraping plate 6710.

[0043] By providing the guide rod 673, the deformation directions of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62 are restricted. At the same time, when the pressure in the straight pipe is small, the positioning post 677 is in the extended state and is inserted into the sliding block 674. The deformation forces of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62 will be restricted, avoiding the deterioration of the recovery performance caused by being in a large deformation for a long time. When the pressure in the straight pipe is large, the first telescopic rod will retract the positioning post 677, so that the deformation forces of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62 are not restricted by the sliding block 674, and the inner thrust can be better balanced.

[0044] 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 scraping plate 6710 will scrape the transport medium adhering to the sliding rod, avoiding the influence of these adhering media on the movement of the sliding block 674 along the guide rod 673 due to the deformation of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62.

[0045] Both ends of the pipe wall 61 are fixedly connected with the outer surface of the working compensation unit 5. The outer surface of the support frame 671 is fixedly connected with the outer surface of the pipe wall 61.

[0046] The outer surface of the positioning notch 678 is slidably connected with the outer surface of the positioning post 677. The outer surface of the scraping plate 6710 is slidably connected with the outer wall of the guide rod 673.

[0047] The outer surface of the balance corrugated inner pipe 68 is fixedly connected with the outer surface of the sliding block 674. The outer surface of the balance corrugated outer pipe 62 is fixedly connected with the outer surface of the sliding block 674.

[0048] As Figures 7-8As shown in the figure, the internal pressure balance mechanism 66 includes an inner ring plate 661. Pressure sensors 662 are evenly arranged on the inner wall of the inner ring plate 661. 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 arranged on the inner side of the pipe wall 61. A wire 664 is fixedly connected to the outer surface of the pressure sensor 662. One end of the wire 664 away from the pressure sensor 662 is fixedly connected to a second telescopic rod 665. The outer surface of the second telescopic rod 665 is fixedly connected to the inner wall of the inner ring plate 661. A flow limiting plate 666 is rotatably connected to the inner wall of the inner ring plate 661. A sealing soft skin 667 is fixedly connected to the outer surface of the flow limiting plate 666.

[0049] Since the connection part between the working correction unit and the balance correction unit will also receive the pressure generated by the medium transmission, the pressure at this part cannot be balanced and compensated. When the pressure at a certain place is too high, it may cause the breakage of the pipe wall and the leakage of the medium. 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 make the second telescopic rod 665 extend, so that the flow limiting plate 666 generates a certain angle, changing the flow angle of the medium and thus weakening the impact effect at the connection part. At the same time, a plurality of sealing gaskets 663 are arranged at the connection between the pipe wall 61 and the pipe wall 53, which also increases the sealing performance of the connection part.

[0050] The outer surface of the inner ring plate 661 is fixedly connected to the outer surface of the pipe wall 61. 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.

[0051] The specific working process is as follows:

[0052] During operation, when the medium moves to the balance compensation unit 6, the medium pressure in the pipeline causes the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62 to deform. By setting the guide rod 673, the deformation directions of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62 are restricted, so that the deformation direction is the same as the direction of the internal thrust, thus playing a role in balancing the internal pressure thrust. At the same time, when the pressure in the straight pipe is small, the clamping column 677 is in the extended state and inserted into the sliding block 674, and the deformation force of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62 will be restricted, avoiding the deterioration of the recovery performance caused by being in a large deformation for a long time. When the pressure in the straight pipe is large, the telescopic part will retract the clamping column 677, so that the deformation force of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 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 scraping plate 6710 will scrape the transported medium adhering to the sliding rod, avoiding the influence of these adhering media on the movement of the sliding block 674 along the guide rod 673 due to the deformation of the balance corrugated inner pipe 68 and the balance corrugated outer pipe 62.

[0053] Embodiment 2, using Figures 1-11 A straight pipe pressure balance type compensator according to an embodiment of the present invention will be described as follows.

[0054] As Figure 9 As shown, a straight pipe pressure balance type compensator of the present invention, on the basis of Embodiment 1, the working compensation unit 5 includes a second pipe wall 51. One end of the second pipe wall 51 is fixedly connected with a working bellows 52. The end of the working bellows 52 far from the second pipe wall 51 is fixedly connected with a third pipe wall 53. The outer surface of the third pipe wall 53 is fixedly connected with a second fixing plate 54. The outer surface of the second fixing plate 54 is fixedly connected with a second large pull rod 55.

[0055] The working bellows 52 is used to absorb the axial displacement of the pipeline.

[0056] The third pipe wall 53 and the first pipe wall 61 are fixedly connected by screws 65. The outer surface of the second pipe wall 51 is fixedly connected with one end of the connecting pipeline 3 far from the port 4.

[0057] As Figure 10 As shown, the shock absorption unit 7 includes a side plate 71. The bottom of the side plate 71 is fixedly connected with the outer surface of the bracket 2. The inner wall of the side plate 71 is fixedly connected with a damper 72. The outer surface of the damper 72 is sleeved with a first telescopic spring 73. The end of the damper 72 far from the side plate 71 is fixedly connected with the outer surface of the connecting pipeline 3. The end of the first telescopic spring 73 far from the side plate 71 is fixedly connected with the outer surface of the connecting pipeline 3. The outer surface of the side plate 71 is fixedly connected with an outer pushing mechanism 74.

[0058] AsFigure 11 As shown, the damper 72 and the first telescopic spring 73 have the function of absorbing vibrations. When the medium enters the compensator from the connecting pipe 3 and exits from the connecting pipe 3 at the other end, fluid pulsation, vibration, etc. will occur in the connecting pipe 3. The damper 72 and the first telescopic spring 73 can effectively absorb the vibration energy, reduce the damage to the compensator, and improve the stability and reliability of the compensator.

[0059] The extrapolation 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 second telescopic spring 744. One end of the second telescopic spring 744 is fixedly connected to a push plate 745.

[0060] 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 second telescopic spring 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 second telescopic spring 744 and the working bellows 52, vibrations in the direction opposite to the vibrations generated by the medium pressure impact will be generated, so that the vibrations in the two directions cancel each other out.

[0061] The specific working process is as follows:

[0062] 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 the rotating column 743 to rotate. The centrifugal force generated will cause the second telescopic spring 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 second telescopic spring 744 and the working bellows 52, vibrations in the direction opposite to the vibrations generated by the medium pressure impact will be generated, so that the vibrations in the two directions cancel each other out. At the same time, when the medium enters the compensator from the connecting pipe 3 and exits from the connecting pipe 3 at the other end, fluid pulsation, vibration, etc. will occur in the connecting pipe 3. The damper 72 and the first telescopic spring 73 can effectively absorb the vibration energy.

[0063] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without making creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special description and limitation.

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), the balancing corrugated outer tube (62) is located outside the balancing corrugated inner tube (68), 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 positioning column (677), the outer surface of the sliding block (674) is provided with a positioning 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); 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).

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 outer wall of the guide rod (673).

4. A 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).

5. A straight pipe pressure balanced compensator according to claim 4, 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).

6. A 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 the second pipe wall (51) is fixedly connected to a working bellows (52), an end of the working bellows (52) away from the second pipe wall (51) is fixedly connected to a third pipe wall (53), the outer surface of the third pipe wall (53) is fixedly connected to a second fixing plate (54), and the outer surface of the second fixing plate (54) is fixedly connected to a second large pull rod (55).

7. A straight pipe pressure balanced compensator according to claim 6, 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).

8. 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).

9. A straight pipe pressure balanced compensator according to claim 8, 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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