阅读说明：本技术 一种具有刚度软化特性的管道刚性吊挂装置 (Rigid pipeline hanging device with rigidity softening characteristic ) 是由 陈尚军 王军民 安付立 李楠林 陈盛广 康豫军 武彦飞 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种具有刚度软化特性的管道刚性吊挂装置,调节器筒体内自上而下依次设置有调节器顶丝、阈值调节器、调节器压盘及承载弹簧,顶端封盖固定于调节器筒体的顶部开口处,调节器顶丝的一端连接于顶端封盖上,调节器顶丝的另一端与阈值调节器连接,调节器拉杆的一端依次穿过调节器筒体的下端面、承载弹簧及调节器压盘后套接有锁紧件,调节器拉杆的另一端与管夹抱箍相连接；销座固定于顶端封盖上,位移控制螺母套接于调节器拉杆上,且位移控制螺母位于调节器筒体的下端面与调节器压盘之间,该装置具有吊挂载荷低于阈值时刚度恒定、吊挂载荷高于阈值时刚度软化、阈值可调、管道最大位移量可控的特点。(The invention discloses a rigid pipeline hanging device with rigidity and softening characteristics, wherein a regulator jackscrew, a threshold regulator, a regulator pressure plate and a bearing spring are sequentially arranged in a regulator barrel from top to bottom; the device has the characteristics that the rigidity is constant when the hanging load is lower than a threshold value, the rigidity is softened when the hanging load is higher than the threshold value, the threshold value is adjustable, and the maximum displacement of the pipeline is controllable.)

1. A rigid pipeline hanging device with rigidity and softening characteristics is characterized by comprising a regulator cylinder (5), a top end sealing cover (4), a regulator pull rod (14), a pipe clamp hoop (19), a pin seat (1) and a displacement control nut (13);

an adjuster jackscrew (6), a threshold adjuster (8), an adjuster pressure plate (10) and a bearing spring (12) are sequentially arranged in the adjuster cylinder (5) from top to bottom, a top end sealing cover (4) is fixed at the top opening of the adjuster cylinder (5), one end of the adjuster jackscrew (6) is connected to the top end sealing cover (4), the other end of the adjuster jackscrew (6) is connected with the threshold adjuster (8), one end of an adjuster pull rod (14) sequentially penetrates through the lower end face of the adjuster cylinder (5), the bearing spring (12) and the adjuster pressure plate (10) and then is sleeved with a locking piece, and the other end of the adjuster pull rod (14) is connected with a pipe clamp hoop (19);

the pin boss (1) is fixed on the top end sealing cover (4), the displacement control nut (13) is sleeved on the regulator pull rod (14), and the displacement control nut (13) is located between the lower end face of the regulator cylinder body (5) and the regulator pressure plate (10).

2. Rigid pipe hanger according to claim 1, wherein the top end cover (4) is fixed to the top opening of the adjuster cylinder (5) by means of a connecting bolt (31).

3. The rigid pipeline hanging device with the rigidity and softening characteristics as claimed in claim 1, wherein one end of the regulator jackscrew (6) is connected to a threaded hole on the top end cover (4) and locked by a first locking nut (71), and the other end of the regulator jackscrew (6) is in threaded connection with the threshold regulator (8).

4. Rigid pipe hanger according to claim 1, wherein the locking member comprises a carrying nut (9) and a second locking nut (72).

5. Rigid pipe hanger according to claim 1, wherein the load bearing spring (12) is a cylindrical coil spring with a circular cross section.

6. Rigid pipe hanger with rigidity and softening characteristics according to claim 1, wherein the pin base (1) is fixed on the top end cover (4) through the pin shaft (2).

7. The rigid pipe hanging device with the rigidity softening property is characterized by further comprising a flange screw (15), a pipe clamp pull rod (16), an eyenut (17) and a first pipe clamp bolt (181);

the end of the adjuster pull rod (14) is connected with one end of the pipe clamp pull rod (16) through a turnbuckle (15), the other end of the pipe clamp pull rod (16) is connected with one side of the pipe clamp hoop (19) through an eyenut (17) and a first pipe clamp bolt (181), and a second pipe clamp bolt (182) is arranged on the other side of the pipe clamp hoop (19).

8. Rigid pipe hanger according to claim 1, wherein the regulator pressure plate (10) has an annular groove on its upper end surface, and the lower end surface of the threshold regulator (8) is embedded in the annular groove.

9. The rigid pipeline hanging device with the rigidity and softening characteristics as claimed in claim 1, wherein a slotted hole is formed in the side surface of the adjuster cylinder (5), a pressure plate pointer (11) is arranged on the adjuster pressure plate (10), the end of the pressure plate pointer (11) penetrates through the slotted hole, and scales matched with the pressure plate pointer (11) are arranged on the outer wall of the adjuster cylinder (5).

10. The rigid pipeline hanging device with the rigidity and the softening property as claimed in claim 1, wherein the inner wall of the regulator cylinder (5) is provided with a guide groove, the outer circumferential surface of the regulator pressure plate (10) is provided with a boss matched with the guide groove, and the boss is embedded in the guide groove.

Technical Field

The invention relates to a rigid pipeline hanging device, in particular to a rigid pipeline hanging device with rigidity and softening characteristics.

Background

The pipeline is a transportation system for connecting two or more devices to transport media, and is widely applied to the energy industry fields of thermal power plants, nuclear power plants, petrochemical industry and the like. In the service process, in order to overcome the effects of mechanical load, displacement load and thermal load, a hanging device needs to be arranged at a proper position on the pipeline so as to ensure the safe operation of the pipeline. A common pipe hanging device is: the device comprises a rigid hanging device, a constant force spring hanging device, a variable force spring hanging device and the like, wherein the rigid hanging device provides a displacement dead point for the gravity direction of the pipeline, plays a dual role in limiting the displacement of the pipeline and bearing the load of the pipeline, and is a vital component in a pipeline hanging system.

When the pipeline supporting and hanging system has abnormal bearing, the traditional rigid hanging device keeps constant response rigidity, and the load of the traditional rigid hanging device greatly deviates from the designed value. Under extreme conditions, the phenomena of structural part damage and hanger load loss can be caused; in addition, when the load fluctuation at the lifting point is large or the load at the lifting point is too large, the pipeline stress at the lifting point may exceed the allowable stress of the pipe, so that the phenomena of cracking, deformation and the like of the pipeline are caused.

Therefore, there is a need for a more reasonable and effective rigid hanging device for pipeline, which has the following functions: the rigidity is constant (approximate infinity) when the hanging load is lower than the threshold value, the rigidity is soft when the hanging load is higher than the threshold value, the threshold value is adjustable, and the maximum displacement of the pipeline is controllable.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a rigid pipeline hanging device with rigidity softening characteristics, which has the characteristics of constant rigidity when the hanging load is lower than a threshold value, softening rigidity when the hanging load is higher than the threshold value, adjustable threshold value and controllable maximum displacement of a pipeline.

In order to achieve the aim, the rigid pipeline hanging device with the rigidity softening characteristic comprises a regulator cylinder, a top end sealing cover, a regulator pull rod, a pipe clamp hoop, a pin seat and a displacement control nut;

an adjuster jackscrew, a threshold adjuster, an adjuster pressure plate and a bearing spring are sequentially arranged in the adjuster cylinder from top to bottom, a top end sealing cover is fixed at the opening at the top of the adjuster cylinder, one end of the adjuster jackscrew is connected to the top end sealing cover, the other end of the adjuster jackscrew is connected with the threshold adjuster, one end of an adjuster pull rod sequentially penetrates through the lower end surface of the adjuster cylinder, the bearing spring and the adjuster pressure plate and then is sleeved with a locking piece, and the other end of the adjuster pull rod is connected with a pipe clamp hoop;

the pin seat is fixed on the top end sealing cover, the displacement control nut is sleeved on the regulator pull rod, and the displacement control nut is located between the lower end face of the regulator cylinder and the regulator pressure plate.

The top end sealing cover is fixed at the opening at the top of the adjuster cylinder through a connecting bolt.

One end of the adjuster jackscrew is connected in a threaded hole in the top end sealing cover and locked by a first locking nut, and the other end of the adjuster jackscrew is in threaded connection with the threshold adjuster.

The retaining member includes a load bearing nut and a second retaining nut.

The bearing spring is a cylindrical spiral spring with a circular section.

The pin boss is fixed on the top end sealing cover through a pin shaft.

The clamp also comprises a turnbuckle, a pipe clamp pull rod, a lifting ring nut and a first pipe clamp bolt;

the tip of regulator pull rod is connected with the one end of pipe clamp pull rod through the turnbuckle, and the other end of pipe clamp pull rod is connected with one side of pipe clamp staple bolt through eyenut and first pipe clamp bolt, and the opposite side of pipe clamp staple bolt is provided with second pipe clamp bolt.

An annular groove is formed in the upper end face of the regulator pressure plate, and the lower end face of the threshold regulator is embedded into the annular groove.

The side of the adjuster cylinder is provided with a slotted hole, a pressure plate pointer is arranged on the adjuster pressure plate, the end of the pressure plate pointer penetrates through the slotted hole, and scales matched with the pressure plate pointer are arranged on the outer wall of the adjuster cylinder.

The inner wall of the adjuster cylinder is provided with a guide groove, the outer peripheral surface of the adjuster pressure plate is provided with a boss matched with the guide groove, and the boss is embedded in the guide groove.

The invention has the following beneficial effects:

when the rigid pipeline hanging device with the rigidity softening characteristic is operated specifically, the threshold value adjuster is rotated to move in the axial direction of the jackscrew of the adjuster, so that the adjuster pressure plate is controlled to compress or release the bearing spring, and the spring pre-tightening force of the bearing spring can be accurately equal to the designed working load force of the rigid hanging device by controlling the rotation amount of the threshold value adjuster. When the actual hanging force on the hanging rod is smaller than the designed working load force, the whole hanging device shows constant response rigidity, and when the actual hanging force on the hanging rod is larger than the designed working load force, the response rigidity of the hanging device is the macroscopic rigidity of the bearing spring, and the numerical value of the response rigidity is far smaller than the response rigidity of the traditional rigid hanging device. Therefore, when the rigid hanging device has an overload phenomenon, the overload protection can be realized by a method for softening the response rigidity of the hanging bracket, the load fluctuation at the hanging point and the pipeline stress at the hanging point are effectively reduced, and meanwhile, the displacement locking function is realized, so that the problems that the drainage gradient of the pipeline and the state of an auxiliary pipeline are changed due to the fact that the pipeline generates overlarge displacement downwards can be effectively solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the interior of the regulator cylinder 5 of the present invention;

FIG. 4 is a diagram illustrating the relationship between design parameters according to the present invention.

The device comprises a pin seat 1, a pin shaft 2, a connecting bolt 31, a top end cover 4, an adjuster cylinder 5, an adjuster jackscrew 6, a first locking nut 71, a second locking nut 72, a threshold adjuster 8, a bearing nut 9, an adjuster pressure plate 10, a pressure plate pointer 11, a bearing spring 12, a displacement control nut 13, an adjuster pull rod 14, a turnbuckle 15, a pipe clamp pull rod 16, an eyenut 17, a first pipe clamp bolt 181, a second pipe clamp bolt 182 and a pipe clamp hoop 19.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 to 4, the rigid pipe hanger with rigidity and softening characteristics according to the present invention comprises a top end cover 4, a regulator cylinder 5, a threshold regulator 8, a regulator pull rod 14 and a pipe clamp hoop 19; the top-down has set gradually regulator jackscrew 6, threshold value regulator 8, regulator pressure disk 10 and carrier spring 12 in the regulator barrel 5, top closing cap 4 is fixed in the top opening part of regulator barrel 5 through connecting bolt 31, the threaded hole on top closing cap 4 is connected to the one end of regulator jackscrew 6, and lock through first lock nut 71, the other end and the threshold value regulator 8 of regulator jackscrew 6 pass through threaded connection, the lower terminal surface of regulator barrel 5, carrier spring 12 and regulator pressure disk 10 back cup joint carrier nut 9 and second lock nut 72 is passed in proper order to the one end of regulator pull rod 14, carrier spring 12 is circular cross-section cylinder coil spring.

In addition, the invention also comprises a pin seat 1, a pin shaft 2 and a displacement control nut 13, wherein the pin seat 1 is fixed on the top end sealing cover 4 through the pin shaft 2, the displacement control nut 13 is sleeved on the adjuster pull rod 14, and the displacement control nut 13 is positioned between the lower end surface of the adjuster cylinder 5 and the adjuster pressure plate 10.

The other end of the adjuster pull rod 14 is connected with one end of a pipe clamp pull rod 16 through a turnbuckle 15, the other end of the pipe clamp pull rod 16 is connected with one side of a pipe clamp hoop 19 through an eyenut 17 and a first pipe clamp bolt 181, and the other side of the pipe clamp hoop 19 is provided with a second pipe clamp bolt 182.

The peripheral surface of the threshold value regulator 8 is provided with a plurality of layers of circular through holes, and angular deflection is designed among the circular through holes of each layer; an annular groove is formed in the upper end face of the regulator pressure plate 10, and the lower end face of the threshold regulator 8 is embedded in the annular groove.

Slotted holes are formed in the side face of the adjuster cylinder body 5, a pressure plate pointer 11 is arranged on the adjuster pressure plate 10, the end portion of the pressure plate pointer 11 penetrates through the slotted holes, and scales matched with the pressure plate pointer 11 are arranged on the outer wall of the adjuster cylinder body 5.

Be provided with the guide way on the inner wall of regulator barrel 5, be provided with on the outer peripheral face of regulator pressure disk 10 with guide way matched with boss, the boss embedded in the guide way, wherein, the figure of guide way is four, and four guide ways distribute along circumference in proper order.

The principle of the invention is as follows:

according to the working load F of the rigid suspension means_gzDetermining the pretension F of the support spring 12_turnAnd make F_gz＝F_turnThe compression stiffness of the carrier spring 12 is K₂During actual installation, the pin boss 1 is connected with a field structural member, the pipe clamp hoop 19 is connected with a pipeline, and when the bearing spring 12 is in an uncompressed state and the threshold value adjuster 8, the adjuster pressure plate 10 and the bearing spring 12 are not in clearance, the threshold value adjuster 8 is rotated to enable the bearing spring 12 to move downwards D along the axial direction of the adjuster jackscrew 6_yjThe pre-compression of the carrier spring 12 is completed, wherein the amount of pre-compression displacement D_yj＝F_gz/K₂. At the same time, the distance D between the displacement control nut 13 and the lower end face of the adjuster cylinder 5 is adjusted in advance_xwSo that D is_xw＝D_max-D_turnAnd finally, the initial installation gap between each component is eliminated by tightening the turnbuckle 15.

In the actual operating state, when the actual hanging force F of the hanging device_sjLess than design work load force F_gzAt this time, the position of the regulator pressure plate 10 does not change, the amount of compression of the carrier spring 12 remains unchanged, and the forces acting on the regulator pressure plate 10 (the tensile force of the regulator rod 14 on the regulator pressure plate 10, the reactive thrust force of the carrier spring 12 on the regulator pressure plate 10, and the thrust force of the threshold regulator 8 on the regulator pressure plate 10) are constantly maintainedThe balance is maintained, so that the hanging device at the stage integrally shows constant response rigidity K₁(approximately infinity);

when the actual hanging force F of the hanging device_sjGreater than the design working load force F_gzAt this stage, the regulator pressure plate 10 moves downward along the axial direction of the regulator jack 6, and the carrier spring 12 is further compressed until the tension of the regulator pull rod 14 on the regulator pressure plate 10 and the reaction force of the carrier spring 12 on the regulator pressure plate 10 reach a balance, so that the response stiffness of the whole hanging device is the compression stiffness K of the carrier spring 12₂A value much less than K₁. In this stage, the regulator pressure plate 10 continuously moves downwards along with the increase of the hanging force, and when the displacement control nut 13 contacts the lower end face of the regulator cylinder 5, the hanging device is locked, so that the condition that the drainage gradient of the pipeline and the state of an auxiliary pipeline are changed due to the fact that the pipeline moves downwards excessively is avoided. Meanwhile, the position of a pressure plate pointer 11 on the regulator pressure plate 10 is observed to judge whether the rigid hanging device is overloaded or not and the specific value of the overload.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention shall be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.