阅读说明：本技术 一种内置粘滞阻尼的防甩击消能限位装置 (Built-in viscous damping prevents whipping energy dissipation stop device ) 是由 陈康华 于 2021-10-26 设计创作，主要内容包括：本发明涉及一种用于高能管的防甩击消能限位装置,其特征在于：由防甩击消能及限位的环状约束件构成,该环状约束件包括内环缸体和外环缸体,在外环缸体中嵌接有内置环状缸体；内环缸体套接在高能管上,外环缸体为对外固定连接端构成固定缸体,内环缸体通过内置环状缸体与外环缸体连接成一整体,形成径向限位结构；内环缸体与内置环状缸体形成嵌接活动连接结构,内置环状缸体与外环缸体形成嵌接活动连接结构,内置环状缸体和内环缸体为活动缸体,形成多向转动及纵向限位结构；在内环缸体与内置环状缸体的连接处的空隙位置和外环缸体与内置环状缸体的连接处的空隙位置弹性缓冲单元,形成内置阻尼及消能结构。具有防止造成固定端和管道产生损伤等特点和进步。(The invention relates to an anti-whipping energy dissipation limiting device for a high-energy pipe, which is characterized in that: the device comprises an annular restraining piece for preventing throwing energy dissipation and limiting, wherein the annular restraining piece comprises an inner ring cylinder body and an outer ring cylinder body, and a built-in annular cylinder body is embedded in the outer ring cylinder body; the inner ring cylinder body is sleeved on the high-energy pipe, the outer ring cylinder body is a fixed cylinder body formed by an external fixed connecting end, and the inner ring cylinder body is connected with the outer ring cylinder body into a whole through the built-in ring cylinder body to form a radial limiting structure; the inner ring cylinder body and the built-in ring cylinder body form a scarf joint movable connection structure, the built-in ring cylinder body and the outer ring cylinder body form a scarf joint movable connection structure, and the built-in ring cylinder body and the inner ring cylinder body are movable cylinder bodies to form a multidirectional rotation and longitudinal limiting structure; and elastic buffer units are arranged at the gap position of the joint of the inner ring cylinder body and the built-in ring cylinder body and the gap position of the joint of the outer ring cylinder body and the built-in ring cylinder body to form a built-in damping and energy dissipation structure. The device has the characteristics and the improvement of preventing the fixed end and the pipeline from being damaged.)

1. The utility model provides a prevent whipping energy dissipation stop device for high energy pipe which characterized in that: the energy dissipation and limiting device is composed of an annular restraining piece for preventing whipping and dissipating energy and limiting, wherein the annular restraining piece comprises an inner ring cylinder body (1) and an outer ring cylinder body (2), and a built-in annular cylinder body (3) is embedded in the outer ring cylinder body (2); the inner ring cylinder body (1) is sleeved on the high-energy pipe (10), the outer ring cylinder body (2) is a fixed cylinder body formed by an external fixed connecting end, and the inner ring cylinder body (1) is connected with the outer ring cylinder body (2) into a whole through the built-in ring cylinder body (3) to form a radial limiting structure; the inner ring cylinder body (1) and the built-in ring cylinder body (3) form a scarf joint movable connection structure, the built-in ring cylinder body (3) and the outer ring cylinder body (2) form a scarf joint movable connection structure, and the built-in ring cylinder body (3) and the inner ring cylinder body (1) are movable cylinder bodies to form a multidirectional rotation and longitudinal limiting structure; sealing structures are arranged at the joint of the inner ring cylinder body (1) and the built-in ring cylinder body (3) and the joint of the outer ring cylinder body (2) and the built-in ring cylinder body (3) to prevent leakage; elastic buffer units are arranged at the gap position of the joint of the inner ring cylinder body (1) and the built-in ring cylinder body (3) and the gap position of the joint of the outer ring cylinder body (2) and the built-in ring cylinder body (3) to form a built-in damping and energy dissipation structure; the radial limiting structure, the longitudinal limiting structure and the built-in damping and energy dissipation structure are used for restraining the high-energy pipe to form an annular integral structure with radial, longitudinal and annular telescopic restraining functions so as to dissipate and limit the energy of the high-energy pipe.

2. The anti-whipping energy dissipation limiting device for the high-energy pipe as claimed in claim 1, wherein: the section of the inner ring cylinder body (1) is rectangular and is provided with an opening, two vertical bars (1-1) are arranged at the opening, each vertical bar (1-1) is provided with two through holes (1-1-1), and an inner ring connecting bar (1-2) is arranged in the middle; the section of the outer ring cylinder body (2) is rectangular and is provided with an opening, a T-shaped outer ring connecting strip (2-1) is arranged in the middle, and a bent part (2-2) is arranged at the opening; the built-in annular cylinder body (3) is provided with an upper part (3-1) and a lower part (3-2), and the upper part (3-1) is transited to the lower part (3-2) through a connecting plate (3-3) to form an integral structure; the upper part is upwards opened, the lower part (3-2) is rectangular closed, two sides of the lower part (3-2) are respectively provided with a side connecting plate (3-6), the bottom surface of the lower part (3-2) is provided with a bottom through hole (3-5), and the connection of the lower side wall of the upper part (3-1) and the upper side wall of the lower part (3-2) is provided with a side through hole (3-4); the built-in annular cylinder body (3) is embedded with the inner annular cylinder body (1) through the side through holes (3-4), and the built-in annular cylinder body (3) is embedded with the outer annular cylinder body (2) through the bottom through holes (3-5) to form a movable embedding connection structure.

3. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 1 or 2, characterized in that: the elastic buffer unit comprises a viscous damping structure and a spring damping structure, the viscous damping structure is composed of a first viscous damping (4) and a second viscous damping (5), the first viscous damping (4) is composed of viscous substances arranged in the built-in annular cylinder body (3), and the second viscous damping (5) is composed of viscous substances arranged in the inner ring cylinder body (1); the spring damping structure is composed of a first spring damper (6) and a second spring damper (7), the first spring damper (6) is composed of a first spring damper arranged on the outer ring cylinder body, and the second viscoelastic spring damper (7) is composed of a second spring damper arranged on the inner ring cylinder body (1); the first spring damping comprises two first springs (6-1), one end of each first spring (6-1) is fixedly connected to the side wall of the outer ring cylinder body (2), the other end of each first spring (6-1) is connected with the annular piston head (6-2), and the annular piston head (6-2) is located in a gap between the side wall of the outer ring cylinder body (2) and the side wall of the built-in ring cylinder body (3) to form a radial spring damping structure; the second spring damper comprises two second springs (7-1), one end of each second spring (7-1) is fixedly connected to the side wall of the built-in annular cylinder body (3), and the other end of each second spring (7-1) is fixedly connected to the partition plate (1-1) in the middle of the annular inner ring cylinder body (1) to form a longitudinal and annular spring damping structure.

4. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 1 or 2, characterized in that: the inner ring cylinder body (1) is a movable cylinder body, the outer ring cylinder body (2) is a fixed cylinder body, and the connecting structure of the anti-whipping energy dissipation limiting structure is as follows: the outer ring cylinder body (2) is connected to the fixed end, and the built-in ring cylinder body (3) and the inner ring cylinder body (1) are movably connected into a whole to form a rotary and telescopic connecting structure; the inner ring cylinder body (1) is sleeved on the high-energy pipeline to form an annular hooping structure.

5. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 3, characterized in that: the annular friction plate is arranged in the viscous substance of the first viscous damping (4) and used for increasing the friction coefficient between the viscous substances, so that the back-and-forth movement of the viscous substance is utilized to perform energy dissipation and energy consumption, the throwing energy of pipeline injection is fully absorbed, the energy dissipation effect is increased, and the pipeline is prevented from being broken.

6. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 3, characterized in that: further, the outer ring cylinder body (2) is connected with the built-in ring cylinder body (3) through a first viscous damper (4) and a first spring damper (6), and a high-strength sealing ring (8) is arranged at each contact position of the side walls of the two cylinder bodies, so that the built-in ring cylinder body (3) can move relative to the outer ring cylinder body (2) in the radial direction and the annular direction of the pipeline.

7. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 3, characterized in that: the built-in annular cylinder body (3) is connected with the inner annular cylinder body 1 through a second viscous damper (5) and a second spring damper (7), and a high-strength sealing ring (8) is arranged at each contact position of the side walls of the two cylinder bodies; the second viscous damper (5) constitutes an energy dissipation structure, which is made of a semisolid or liquid material; the inner ring cylinder body (1) moves relative to the built-in ring cylinder body (3) along the longitudinal direction and the ring direction of the high-energy pipeline.

8. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 3, characterized in that: a ring-shaped piston ring (9) is arranged in the inner ring cylinder body (1), and the ring-shaped piston ring (9) is formed by a piston head with a hole so as to facilitate the second viscous damping (5) to do reciprocating motion in the longitudinal direction of the pipeline in the inner ring cylinder body (3); the viscous damping (6) flows through the inner ring cylinder body (1) through the piston head with the hole, so that the energy dissipation and energy consumption are carried out by utilizing the back-and-forth movement of the viscous substance, and the whipping energy of the pipeline injection is fully absorbed.

9. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 3, characterized in that: two ends of a first spring (6-1) of the first spring damper are connected to the annular and radial hinged supports (6-2), one of the annular and radial hinged supports (6-2) is fixed on the side wall of the outer ring cylinder body (2), and the other one of the annular and radial hinged supports is connected to the annular piston head (9), and the first spring (6-1) is provided with 12-20 springs which are arranged in an inclined manner to form an inclined angle; two ends of a second spring (7-1) of the second spring damping are connected to the annular and longitudinal hinged supports (7-2), one of the annular and longitudinal hinged supports (7-2) is fixed on the side wall of the built-in annular cylinder body (3), and the other one is connected to the side wall of the inner ring cylinder body (1); the second spring (7-1) is provided with (12-20) strips which are arranged in an inclined manner to form an inclined angle; the radial and longitudinal displacement and the rotation of the high-energy pipeline are limited, so that the high-energy pipeline is convenient to reset.

10. An anti-whipping energy dissipation limiting device for high energy pipes according to claim 9, characterized in that: the inclination angle alpha is 0-30 degrees.

Technical Field

The invention relates to an anti-whipping energy dissipation limiting device for a high-energy pipe, which is suitable for preventing whipping and energy dissipation of the high-energy pipe in a nuclear power plant, a thermal power plant, a cogeneration project and heating equipment. Belongs to the technical field of power equipment and application.

Background

At present, high-energy pipelines are widely used in the fields of electric power and heat supply, such as nuclear power plants, thermal power stations, cogeneration projects, and heat supply plants. The high temperature and high pressure steam in such pipelines contains huge energy, and once the pipeline is broken, the phenomena of pipeline injection and pipe throwing can cause no small loss of personnel and economy.

Nuclear power is one of clean energy in the field of power generation, and is increasingly widely applied. In nuclear power plants, whip-hit prevention structures are often used as transitions between nuclear islands and conventional islands. And high-energy pipelines such as a main steam pipe, a main water supply pipe and the like need to penetrate between the nuclear island and the conventional island, and the whipping force can reach more than 8000kN when the pipelines are broken. Therefore, it is necessary to provide a whip-proof structure to protect the structural safety of the nuclear island and the conventional island. The high-energy pipelines of the heat supply station and the heat supply pipe network have wide range of approaches, and the anti-whipping structure is also required to be arranged to protect the safety of related equipment.

In order to defend the phenomena of jetting and pipe throwing caused by pipe breakage of the high-energy pipeline under an extreme working condition, the anti-throwing piece is required to be arranged in the anti-throwing structure so as to resist huge throwing force under the action of the pipe throwing of the high-energy pipeline. Therefore, the structure safety and the personnel safety nearby of the nuclear power station, the thermal power plant and the heating plant are guaranteed, and the impact of the whipping effect is reduced to the minimum.

In the prior art, the whip preventing member can be divided into a rigid whip preventing member and a flexible whip preventing member according to energy dissipation capacity. The rigid whipping prevention piece can be a reinforced concrete shear wall type or a steel/concrete frame type, the contact surface of the rigid whipping prevention piece and the high-energy pipeline is in hard contact, and the energy dissipation capacity is almost zero. Moreover, the anti-whipping structure is often heavy and large, and the economic benefit is underground. For the flexible anti-whipping part, a U-shaped steel hoop is arranged on the outer side which is more applied at present, so that the restraint and the energy consumption of the high-energy pipeline are formed, and the whipping of the high-energy pipeline is prevented, namely the U-shaped hoop anti-whipping part is called as the' U-shaped hoop anti-whipping part for short. However, the U-shaped hoop anti-whipping piece has the following problems: (1) this prevent getting rid of the piece can only restrict the pipeline and get rid of to the free end, can't restrict the high energy pipeline and get rid of the displacement to the fixed end direction, cause stiff end and pipeline to produce the damage easily. (2) The anti-throwing piece can only limit the radial displacement of the high-energy pipeline and cannot limit the circumferential rotation and the longitudinal displacement. (3) The U-shaped hoop anti-whipping piece consumes energy by utilizing the self-extending deformation, and has single energy consumption type and low energy consumption capability. (4) It has almost no elastic stage and can directly enter into plastic deformation stage, and its recovery capability is lacked.

Disclosure of Invention

The invention aims to solve the technical problems that the radial displacement of a high-energy pipeline can only be limited, the circumferential rotation and the longitudinal displacement can not be limited, the displacement of the high-energy pipeline in the direction of a fixed end can not be limited, the fixed end and the pipeline are easily damaged, the energy dissipation and energy consumption capacity is low and the like in an anti-throwing piece with a U-shaped hoop structure in the prior art.

The purpose of the invention can be achieved by adopting the following technical scheme:

the utility model provides a prevent whipping energy dissipation stop device for high energy pipe, its structural feature lies in: the device comprises an annular restraining piece for preventing throwing energy dissipation and limiting, wherein the annular restraining piece comprises an inner ring cylinder body and an outer ring cylinder body, and a built-in annular cylinder body is embedded in the outer ring cylinder body; the inner ring cylinder body is sleeved on the high-energy pipe, the outer ring cylinder body is a fixed cylinder body formed by an external fixed connecting end, and the inner ring cylinder body is connected with the outer ring cylinder body into a whole through the built-in ring cylinder body to form a radial limiting structure; the inner ring cylinder body and the built-in ring cylinder body form a scarf joint movable connection structure, the built-in ring cylinder body and the outer ring cylinder body form a scarf joint movable connection structure, and the built-in ring cylinder body and the inner ring cylinder body are movable cylinder bodies to form a multidirectional rotation and longitudinal limiting structure; sealing structures are arranged at the joint of the inner ring cylinder body and the built-in ring cylinder body and the joint of the outer ring cylinder body and the built-in ring cylinder body to prevent leakage; elastic buffer units are arranged at the gap position of the joint of the inner ring cylinder body and the built-in ring cylinder body and the gap position of the joint of the outer ring cylinder body and the built-in ring cylinder body to form a built-in damping and energy dissipation structure; the radial limiting structure, the longitudinal limiting structure and the built-in damping and energy dissipation structure are used for restraining the high-energy pipe to form an annular integral structure with radial, longitudinal and annular telescopic restraining functions so as to dissipate and limit the energy of the high-energy pipe.

The purpose of the invention can be achieved by adopting the following technical scheme:

furthermore, the section of the inner ring cylinder body 1 is rectangular and is provided with an opening, two vertical bars are arranged at the opening, each vertical bar is provided with two through holes, and an inner ring connecting bar is arranged in the middle; the section of the outer ring cylinder body is rectangular and is provided with an opening, a T-shaped outer ring connecting strip is arranged in the middle of the outer ring cylinder body, and a bent part is arranged at the opening; the built-in annular cylinder body is provided with an upper part and a lower part, and the upper part is transited to the lower part through a connecting plate to form an integral structure; the upper part is in an upward opening shape, the lower part is in a rectangular closed shape, two sides of the lower part are respectively provided with a side connecting plate, the bottom surface of the lower part is provided with a bottom through hole, and the connection between the upper lower side wall and the lower upper side wall is provided with a side through hole; the built-in annular cylinder body is embedded with the inner annular cylinder body 1 through the side through hole, and the built-in annular cylinder body is embedded with the outer annular cylinder body through the bottom through hole to form a movable embedding connection structure.

Further, the elastic buffer unit comprises a viscous damping structure and a spring damping structure, wherein the viscous damping structure is composed of a first viscous damping and a second viscous damping, the first viscous damping is composed of viscous substances arranged in the built-in annular cylinder body, and the second viscous damping is composed of viscous substances arranged in the inner ring cylinder body; the spring damping structure is composed of a first spring damper and a second spring damper, the first spring damper is composed of a first spring damper arranged on the outer ring cylinder body, and the second viscoelastic spring damper is composed of a second spring damper arranged on the inner ring cylinder body; the first spring damper comprises two first springs, one end of each first spring is fixedly connected to the side wall of the outer ring cylinder body 2, the other end of each first spring is connected with the annular piston head, and the annular piston head is located in a gap between the side wall of the outer ring cylinder body and the side wall of the built-in ring cylinder body to form a radial spring damping structure; the second spring damper comprises two second springs, one end of each second spring is fixedly connected to the side wall of the built-in annular cylinder body, and the other end of each second spring is fixedly connected to the partition plate in the middle of the ring inner ring cylinder body, so that a longitudinal and annular spring damping structure is formed.

Further, the inner ring cylinder body is a movable cylinder body, the outer ring cylinder body is a fixed cylinder body, and the connecting structure of the anti-whipping energy dissipation limiting structure is as follows: the outer ring cylinder body is connected to the fixed end, and the built-in ring cylinder body and the inner ring cylinder body are movably connected into a whole to form a rotating and telescopic connecting structure; the inner ring cylinder body is sleeved on the high-energy pipeline to form an annular hooping structure.

Furthermore, an annular friction plate is arranged in the viscous substance of the first viscous damping and used for increasing the friction coefficient between the viscous substances, so that the back-and-forth movement of the viscous substance is utilized to perform energy dissipation and energy consumption, the throwing energy of pipeline injection is fully absorbed, the energy dissipation effect is increased, and the pipeline is prevented from being broken.

Further, the outer ring cylinder body is connected with the built-in ring cylinder body through a first viscous damper and a first spring damper 6, and a high-strength sealing ring is arranged at each contact position of the side walls of the two cylinder bodies, so that the built-in ring cylinder body can move relative to the outer ring cylinder body in the radial direction and the annular direction of the pipeline.

Furthermore, the built-in annular cylinder body is connected with the inner annular cylinder body through a second viscous damper and a second spring damper, and a high-strength sealing ring is arranged at each contact position of the side walls of the two cylinder bodies; the second viscous damping forms an energy dissipation structure which is made of semisolid or liquid materials; the inner ring cylinder body moves relative to the built-in ring cylinder body along the longitudinal direction and the annular direction of the high-energy pipeline.

Further, a ring piston ring is arranged in the inner ring cylinder body, and the ring piston ring is formed by a piston head with a hole, so that second viscous damping can perform reciprocating motion in the longitudinal direction of the pipeline in the built-in ring cylinder body; viscous damping flows through the inner ring cylinder body through the piston head with the hole, so that energy dissipation and energy consumption are carried out by utilizing the back-and-forth movement of the viscous substance, and the throwing energy of pipeline injection is fully absorbed.

Furthermore, two ends of a first spring of the first spring damper are connected to the annular and radial hinged supports, one of the annular and radial hinged supports is fixed on the side wall of the outer ring cylinder body, and the other one of the annular and radial hinged supports is connected to the annular piston head, and the first spring is provided with 12-20 springs which are arranged in an inclined manner to form an inclined angle; two ends of a second spring of the second spring damper are connected to the annular and longitudinal hinged supports, one of the annular and longitudinal hinged supports is fixed on the side wall of the built-in annular cylinder body, and the other one of the annular and longitudinal hinged supports is connected to the side wall of the inner ring cylinder body; the second springs are provided with 12-20 strips and are arranged in an inclined mode to form an inclined angle alpha; the radial and longitudinal displacement and the rotation of the high-energy pipeline are limited, so that the high-energy pipeline is convenient to reset.

Further, the inclination angle α is 0 to 30 °.

The invention has the following prominent substantive characteristics and remarkable progress:

1. the invention forms a multi-cylinder type connecting structure by connecting a built-in annular cylinder body embedded in a fixed cylinder body with a movable cylinder body (an inner ring cylinder body), and forms a flexible connecting structure by arranging viscous damping and spring damping at the mutual connection position of each cylinder body, thereby forming the restraint of a radial limiting structure, a longitudinal limiting structure and an energy dissipation structure on a high-energy pipe, and forming an annular integral structure with radial, longitudinal and annular telescopic restraint functions to dissipate and limit the energy of the high-energy pipe. Therefore, the anti-throwing piece with the U-shaped hoop structure can solve the problems that the anti-throwing piece with the U-shaped hoop structure in the prior art can only limit the radial displacement of a high-energy pipeline, can not limit the circumferential rotation and the longitudinal displacement, can not limit the displacement of the high-energy pipeline thrown to the fixed end direction, can easily cause damage to the fixed end and the pipeline and low energy dissipation and energy consumption capacity and the like, and has the prominent substantive characteristics and obvious technical progress of limiting the radial displacement of the high-energy pipeline, limiting the circumferential rotation and the longitudinal displacement, limiting the displacement of the high-energy pipeline thrown to the fixed end direction, preventing the fixed end and the pipeline from being damaged and preventing the energy dissipation and energy consumption capacity from being high.

2. The invention comprises an inner ring cylinder body and an outer ring cylinder body, wherein a built-in ring cylinder body is embedded in the outer ring cylinder body; the inner ring cylinder body is sleeved on the high-energy pipe, the outer ring cylinder body is a fixed cylinder body formed by an external fixed connecting end, and the inner ring cylinder body is connected with the outer ring cylinder body into a whole through the built-in ring cylinder body to form a radial limiting structure; the inner ring cylinder body and the built-in ring cylinder body form a scarf joint movable connection structure, the built-in ring cylinder body and the outer ring cylinder body form a scarf joint movable connection structure, and the built-in ring cylinder body and the inner ring cylinder body are movable cylinder bodies to form a multidirectional rotation and longitudinal limiting structure; sealing structures are arranged at the joint of the inner ring cylinder body and the built-in ring cylinder body and the joint of the outer ring cylinder body and the built-in ring cylinder body to prevent leakage; elastic buffer units are arranged at the gap position of the joint of the inner ring cylinder body and the built-in ring cylinder body and the gap position of the joint of the outer ring cylinder body and the built-in ring cylinder body to form a built-in damping and energy dissipation structure; and an annular integral structure with radial, longitudinal and annular telescopic constraint functions is formed by constraining the high-energy pipe through the radial limit structure, the longitudinal limit structure and the built-in energy dissipation structure, so that the high-energy pipe is subjected to energy dissipation and limitation. Therefore, the displacement and the circumferential rotation of the high-energy pipeline in any direction can be limited, the safety of the high-energy pipeline, the main structure and nearby personnel is guaranteed, secondary damage is avoided, and the effect is obvious.

3. The elastic buffer unit is arranged and comprises a viscous damping structure and a spring damping structure, the viscous damping structure is composed of a first viscous damping and a second viscous damping, the spring damping structure is composed of a first spring damping and a second spring damping, energy dissipation and consumption can be carried out by fully utilizing the viscous damping and the liquid damping of the spring damper, and the throwing energy of the high-energy pipeline is fully absorbed, so that the energy dissipation and consumption capacity of the throwing-proof part is greatly improved.

4. The invention realizes flexible connection through the spring damper and viscous damping, avoids stress concentration, can greatly reduce the throwing power of the high-energy pipeline and fully damp vibration; the throwing-proof stress is reasonable, and the structural material and the cost are saved. Because this prevent that to get rid of the piece is flexonics, so can reduce the pipeline vibration and throw the structural noise who produces when hitting, have certain noise reduction effect.

5. The invention combines the spring damper and the viscous damping to use, so that the anti-throwing piece can limit the thermal displacement in the operation stage and can also limit the throwing displacement and the rotation of the pipeline under the throwing-proof working condition, and the application range is very wide. And the spring damper can always keep elastic state to work under the external force action of the running working condition and the throwing-proof working condition of the throwing-proof piece. Viscous damping can provide very big bearing capacity in the inside flow of cylinder body, should prevent getting rid of the piece make full use of viscous damping and spring damper's atress and hysteresis characteristics, provide nimble convenience for preventing getting rid of the restriction point setting.

Drawings

FIG. 1 is a longitudinal cross-sectional view of a conduit according to an embodiment of the present invention.

Fig. 2 is a structural sectional view of the inner ring cylinder of fig. 1.

Fig. 3 is a structural sectional view of the outer ring cylinder of fig. 1.

Fig. 4 is a structural sectional view of the built-in ring cylinder of fig. 1.

Fig. 5 is a sectional view of a portion of the structure taken along line a-a in fig. 1.

Fig. 6 is a partial structural sectional view taken along line B-B in fig. 1.

Detailed Description

Specific example 1:

referring to fig. 1-6, the energy dissipation limiting device for preventing whipping of a high-energy pipe according to the present embodiment is composed of an annular restraining member for preventing whipping energy dissipation and limiting, wherein the annular restraining member comprises an inner ring cylinder body 1 and an outer ring cylinder body 2, and a built-in annular cylinder body 3 is embedded in the outer ring cylinder body 2; the inner ring cylinder body 1 is sleeved on the high-energy pipe 10, the outer ring cylinder body 2 is a fixed cylinder body formed by an external fixed connecting end, and the inner ring cylinder body 1 is connected with the outer ring cylinder body 2 into a whole through the built-in ring cylinder body 3 to form a radial limiting structure; the inner ring cylinder body 1 and the built-in ring cylinder body 3 form a scarf joint movable connection structure, the built-in ring cylinder body 3 and the outer ring cylinder body 2 form a scarf joint movable connection structure, and the built-in ring cylinder body 3 and the inner ring cylinder body 1 are movable cylinder bodies to form a multidirectional rotation and longitudinal limiting structure; sealing structures are arranged at the joint of the inner ring cylinder body 1 and the built-in ring cylinder body 3 and the joint of the outer ring cylinder body 2 and the built-in ring cylinder body 3 to prevent leakage; elastic buffer units are arranged at the gap position of the joint of the inner ring cylinder body 1 and the built-in ring cylinder body 3 and the gap position of the joint of the outer ring cylinder body 2 and the built-in ring cylinder body 3 to form a built-in damping and energy dissipation structure; and an annular integral structure with radial, longitudinal and annular telescopic constraint functions is formed by constraining the high-energy pipe through the radial limit structure, the longitudinal limit structure and the built-in energy dissipation structure, so that the high-energy pipe is subjected to energy dissipation and limitation.

In this embodiment:

the section of the inner ring cylinder body 1 is rectangular and is provided with an opening, two vertical bars 1-1 are arranged at the opening, each vertical bar 1-1 is provided with two through holes 1-1-1, and an inner ring connecting bar 1-2 is arranged in the middle; the section of the outer ring cylinder body 2 is rectangular and is provided with an opening, a T-shaped outer ring connecting strip 2-1 is arranged in the middle, and a bent part 2-2 is arranged at the opening; the built-in annular cylinder 3 has an upper portion 3-1 and a lower portion 3-2, the upper portion 3-1 being transitioned to the lower portion 3-2 by a connecting plate 3-3 to form a unitary structure; the upper part is upwards opened, the lower part 3-2 is rectangular closed, two sides of the lower part 3-2 are respectively provided with a side connecting plate 3-6, the bottom surface of the lower part 3-2 is provided with a bottom through hole 3-5, and the connection of the lower side wall of the upper part 3-1 and the upper side wall of the lower part 3-2 is provided with a side through hole 3-4; the built-in annular cylinder body 3 is embedded with the inner annular cylinder body 1 through the side through holes 3-4, and the built-in annular cylinder body 3 is embedded with the outer annular cylinder body 2 through the bottom through holes 3-5 to form a movable embedding connection structure.

The elastic buffer unit comprises a viscous damping structure and a spring damping structure, the viscous damping structure is composed of a first viscous damping and a second viscous damping, the first viscous damping 4 is composed of viscous substances arranged in the built-in annular cylinder body 3, and the second viscous damping 5 is composed of viscous substances arranged in the inner ring cylinder body 1; the spring damping structure is composed of a first spring damper and a second spring damper, the first spring damper is composed of a first spring damper 6 arranged on the outer ring cylinder body, and the second viscoelastic spring damper is composed of a second spring damper 7 arranged on the inner ring cylinder body 1; the first spring damper 6 comprises two first springs 6-1, one end of each first spring 6-1 is fixedly connected to the side wall of the outer ring cylinder 2, the other end of each first spring 6-1 is connected with the annular piston head 6-1, and the annular piston head 6-1 is located in a gap between the side wall of the outer ring cylinder 2 and the side wall of the built-in ring cylinder 3 to form a radial spring damping structure; the second spring damper 7 comprises two second springs 7-1, one end of each second spring 7-1 is fixedly connected to the side wall of the built-in annular cylinder body 3, and the other end of each second spring 7-1 is fixedly connected to the partition plate 1-1 in the middle of the ring-inner annular cylinder body 1, so that a longitudinal and annular spring damping structure is formed.

The inner ring cylinder body 1 is a movable cylinder body, the outer ring cylinder body 2 is a fixed cylinder body, and the connecting structure of the anti-whipping energy dissipation limiting structure is as follows: the outer ring cylinder body 2 is connected to the fixed end, and the built-in ring cylinder body 3 and the inner ring cylinder body 1 are movably connected into a whole to form a rotary and telescopic connecting structure; the inner ring cylinder body 1 is sleeved on the high-energy pipeline to form an annular hooping structure.

The annular friction plate is arranged in the viscous substance of the first viscous damping 4 and used for increasing the friction coefficient between the viscous substances, so that the back-and-forth movement of the viscous substance is utilized to perform energy dissipation and energy consumption, the throwing energy of pipeline injection is fully absorbed, the energy dissipation effect is increased, and the pipeline is prevented from being broken.

The outer ring cylinder body 2 is connected with the built-in ring cylinder body 3 through a first viscous damper 4 and a first spring damper 6, and a high-strength sealing ring 8 is arranged at each contact part of the side walls of the two cylinder bodies, so that the built-in ring cylinder body 3 can move relative to the outer ring cylinder body 2 along the radial direction and the circumferential direction of a pipeline.

The built-in annular cylinder body 3 is connected with the inner annular cylinder body 1 through a second viscous damper 5 and a second spring damper 7, and a high-strength sealing ring 8 is arranged at each contact part of the side walls of the two cylinder bodies; the second viscous damper 5 constitutes an energy dissipation structure, which is made of a semisolid or liquid material; the inner ring cylinder body 1 moves relative to the inner ring cylinder body 3 along the longitudinal direction and the annular direction of the high-energy pipeline.

A ring-shaped piston ring 9 is arranged in the inner ring cylinder body 1, the ring-shaped piston ring 9 is composed of a piston head with a hole, so that the second viscous damping 5 can reciprocate in the longitudinal direction of the pipeline in the inner ring cylinder body 3; the viscous damper 6 flows through the inner ring cylinder body 1 through the piston head with the hole, so that energy dissipation and energy consumption are carried out by utilizing the back-and-forth movement of the viscous substance, and the whipping energy of pipeline injection is fully absorbed.

Two ends of a first spring 6-1 of the first spring damper are connected to the annular and radial hinged supports 6-2, one of the annular and radial hinged supports 6-2 is fixed on the side wall of the outer ring cylinder body 2, and the other one is connected to the annular piston head 9, and the first spring 6-1 is provided with 12-20 strips which are arranged in an inclined manner to form an inclined angle; two ends of a second spring 7-1 of the second spring damping are connected to the annular and longitudinal hinged supports 7-2, one of the annular and longitudinal hinged supports 7-2 is fixed on the side wall of the built-in annular cylinder body 3, and the other two of the annular and longitudinal hinged supports are connected to the side wall of the inner ring cylinder body 1; the second springs 7-1 are provided with 12-20 strips and are arranged in an inclined mode to form an inclined angle; the radial and longitudinal displacement and the rotation of the high-energy pipeline are limited, so that the high-energy pipeline is convenient to reset. The inclination angle α may be 15 °.

The working principle of the embodiment is described in detail below with reference to the accompanying drawings:

referring to fig. 1 to 4, the present embodiment includes a main body structure 20 as a fixed end to which an outer ring cylinder 2 (fixed cylinder) is connected, a plurality of cylinders (fixed cylinder and movable cylinder), a plurality of sets of viscous dampers, and a plurality of spring dampers. Connected with the fixed cylinder is a built-in annular cylinder 3 (movable cylinder A), and connected with the high-energy pipeline is an inner annular cylinder 1 (movable cylinder B). The two movable cylinder bodies are connected with each other to form a whole. The connection sequence between them is: the fixed end, the fixed cylinder body, the movable cylinder body A, the movable cylinder body B and the high-energy pipeline are arranged in the cylinder body; the fixed cylinder body is connected with the movable cylinder body A through a first viscous damper 4 and a first spring damper 6. Each contact part of the cylinder body wall is provided with a high-strength sealing ring so that the movable cylinder body A can move relative to the fixed cylinder body along the radial direction and the annular direction of the pipeline. The first viscous damper 4 can be made of semisolid or liquid materials to provide energy dissipation and vibration reduction effects in reciprocating motion between the cylinder bodies, so that the throwing force of the pipeline is greatly reduced, and the energy of the throwing of the pipeline is absorbed. The annular friction plate is arranged in the first viscous damping 4 and used for increasing the friction coefficient between the viscous damping 4, increasing the energy dissipation effect and fully absorbing the energy released by the broken pipeline.

The connection between the built-in annular cylinder body 3 and the movable cylinder body B also uses a high-strength sealing ring and is connected with a second spring damper 7 through a second viscous damper 5. The energy dissipation structure is mainly the second viscous damping 5, and semi-solid or liquid materials can be adopted as well. The movable cylinder body B can move along the longitudinal direction and the annular direction of the pipeline relative to the built-in annular cylinder body 3. The ring piston ring of the movable cylinder B uses a perforated piston head to facilitate the second viscous damping 5 to reciprocate longitudinally along the pipe inside the built-in movable cylinder a.

The first spring damper 6 and the second spring damper 7 are used in an operation stage or a whipping prevention stage, so that the high-energy pipeline has the restoring capacity of returning to the original position after the vibration is terminated. The axial directions of the first spring damper 6 and the second spring damper 7 form a certain included angle with the radial direction or the longitudinal direction or the annular direction of the high-energy pipeline. The size of the included angle can be determined according to the direction and the size of the whipping force of each constraint point. Due to the included angle, the axial force of the spring damper device not only provides the component force in the radial direction of the pipeline, but also provides the component force in the annular direction and the longitudinal direction of the pipeline. Through the arrangement and combination of the spring damper devices, the constraint can be provided for the swinging force and the circumferential rotation of the pipeline in all directions. And energy dissipation and energy consumption are carried out through a series of characteristics such as elasticity, friction damping and the like of a liquid damper and the spring damper in the spring damper device, the throwing power is further reduced, the high-energy pipeline is protected, secondary damage to the high-energy pipeline is prevented, and the main structure is also protected.

As can be seen from fig. 5 and 6, the first spring damper 6 and the second spring damper 7 are respectively provided with a hinged support at both ends thereof, and are hinged with the cylinder bodies. The fixed cylinder body is fixedly connected with the fixed end and is fixed on the main body structure. The movable cylinder body B is fixed on the high-energy pipeline.

When the anti-whipping energy dissipation limiting device is in a normal operation condition, the viscous damping enters a working state, provides vibration isolation and noise reduction effects for the main structure, limits the thermal displacement of the pipeline and reduces the fatigue effect of the main structure.

When the structure is in the anti-whipping working condition, under the action of huge whipping force, the viscous damping provides a main energy absorption and dissipation effect, the energy released by the broken pipeline is greatly absorbed in the reciprocating motion of the movable cylinder body, and huge anti-whipping bearing capacity is provided for the main body structure and the high-energy pipeline. Meanwhile, the liquid damping of the spring damper also absorbs part of the whipping energy, so that the original position of the high-energy pipeline is restored, the whipping force is further reduced, and the main structure and the high-energy pipeline are protected from secondary damage.

In the scheme of the anti-whipping restraint part, the anti-whipping device consists of a plurality of cylinder bodies, a plurality of viscous dampers and a plurality of groups of spring dampers. The device can limit the radial and longitudinal equal-direction displacement and circumferential rotation of the high-energy pipeline. Once the high-energy pipeline is broken, the pipeline is displaced or rotated under the action of the jet force and the throwing power. Viscous damping and a spring damper in the anti-throwing piece are in a working state, viscous damping is generated by the back-and-forth movement of the viscous substance in the cylinder body, and the throwing force of the high-energy pipeline is buffered and greatly reduced. Meanwhile, the liquid damping in the middle of the spring damper also generates viscous damping by the back and forth movement of the viscous liquid in the cylinder. The viscous damping and the liquid damping of the spring damper consume impact energy at the same time, and the throwing energy of the high-energy pipeline is converted into the internal energy and the strain energy of the throwing-proof part, so that the purpose of energy dissipation and energy consumption is achieved.

Thermal conduits are often associated with thermal displacements and vibrations during operating conditions. At the moment, the force of the anti-throwing piece is smaller, and viscous damping and spring damper pieces in the anti-throwing piece can also enter a working stage, so that the vibration of the pipeline is reduced, and the displacement of the pipeline is limited.

Under the throwing working condition, the injection force and the throwing load of the thermal pipeline are large. At this time, the anti-throwing piece is subjected to a large impact force instantaneously, and the viscous damping and the spring damper piece in the anti-throwing piece enter a working state simultaneously. Viscous damping greatly reduces and buffers the whip force, while spring dampers limit whip displacement and rotation. The flexible connection is realized from a plurality of angles by the anti-throwing piece, and an ideal stress effect is provided for the main body structure and the high-energy pipeline.

The invention relates to an anti-whipping energy dissipation limiting device which is a flexible connection anti-whipping part mainly composed of a plurality of cylinder bodies, a plurality of groups of viscous dampers and a plurality of spring dampers, and the longitudinal section along a pipeline is shown as the following figure:

as can be seen from fig. 5, the fixed cylinder is connected with the movable cylinder a through the viscous damper a and the spring damper a. Each contact part of the cylinder wall is provided with a high-strength sealing ring so that the movable cylinder body A can move relative to the fixed cylinder body along the radial direction and the annular direction of the pipeline. The viscous damping A can be made of semisolid or liquid materials, and provides energy dissipation and vibration reduction effects in the reciprocating motion between the cylinder bodies, so that the throwing force of the pipeline is greatly reduced, and the energy of the throwing of the pipeline is absorbed. The annular friction plate is arranged in the viscous damping A and used for increasing the friction coefficient between the viscous damping A, increasing the energy dissipation effect and fully absorbing the energy released by the broken pipeline.

And the connection between the movable cylinder body A and the movable cylinder body B also uses a high-strength sealing ring and is connected with the spring damper B through the viscous damping B. The energy dissipation medium is mainly viscous damping B, and a semisolid or liquid material can also be adopted. The movable cylinder body B can move relative to the movable cylinder body A along the longitudinal direction and the annular direction of the pipeline. The annular piston ring of the movable cylinder body B uses a piston head with a hole so as to facilitate the viscous damping B to reciprocate in the movable cylinder body A along the longitudinal direction of the pipeline.

The spring damper is used in the operation stage or the throwing-proof stage, so that the high-energy pipeline has the restoring capacity of returning to the original position after the vibration is terminated. The axial direction of the spring damper and the radial direction or the longitudinal direction and the annular direction of the high-energy pipeline form a certain included angle. The size of the included angle can be determined according to the direction and the size of the whipping force of each constraint point. Due to the included angle, the axial force of the spring damper device not only provides the component force in the radial direction of the pipeline, but also provides the component force in the annular direction and the longitudinal direction of the pipeline. Through the arrangement and combination of the spring damper devices, the constraint can be provided for the swinging force and the circumferential rotation of the pipeline in all directions. And energy dissipation and energy consumption are carried out through a series of characteristics such as elasticity, friction damping and the like of a liquid damper and the spring damper in the spring damper device, the throwing power is further reduced, the high-energy pipeline is protected, secondary damage to the high-energy pipeline is prevented, and the main structure is also protected.

As can be seen from the section A-A and the section B-B, the two ends of the spring damper device are provided with the hinged supports which are hinged with the cylinder bodies. And the fixed cylinder body is fixedly connected with the fixed end and is fixed on the main body structure. The movable cylinder body B is fixed on the high-energy pipeline.

When the structure is in the normal operating mode, viscous damping and the viscous damping enter the working state simultaneously, vibration isolation and noise reduction effects are provided for the main structure, thermal displacement of the pipeline is limited, and fatigue effects of the main structure are reduced.

When the structure is in the anti-whipping working condition, under the action of huge whipping force, the viscous damping provides a main energy absorption and dissipation effect, the energy released by the broken pipeline is greatly absorbed in the reciprocating motion of the movable cylinder body, and huge anti-whipping bearing capacity is provided for the main body structure and the high-energy pipeline. Meanwhile, the liquid damping of the spring damper also absorbs part of the whipping energy, so that the original position of the high-energy pipeline is restored, the whipping force is further reduced, and the main structure and the high-energy pipeline are protected from secondary damage.

In the scheme of the anti-whipping restraint part, the anti-whipping device consists of a plurality of cylinder bodies, a plurality of viscous dampers and a plurality of groups of spring dampers. The device can limit the radial and longitudinal equal-direction displacement and circumferential rotation of the high-energy pipeline. Once the high-energy pipeline is broken, the pipeline is displaced or rotated under the action of the jet force and the throwing power. Viscous damping and a spring damper in the anti-throwing piece are in a working state, viscous damping is generated by the back-and-forth movement of the viscous substance in the cylinder body, and the throwing force of the high-energy pipeline is buffered and greatly reduced. Meanwhile, the liquid damping in the middle of the spring damper also generates viscous damping by the back and forth movement of the viscous liquid in the cylinder. The viscous damping and the liquid damping of the spring damper consume impact energy at the same time, and the throwing energy of the high-energy pipeline is converted into the internal energy and the strain energy of the throwing-proof part, so that the purpose of energy dissipation and energy consumption is achieved.

Thermal conduits are often associated with thermal displacements and vibrations during operating conditions. At the moment, the force of the anti-throwing piece is smaller, and viscous damping and spring damper pieces in the anti-throwing piece can also enter a working stage, so that the vibration of the pipeline is reduced, and the displacement of the pipeline is limited.

Under the throwing working condition, the injection force and the throwing load of the thermal pipeline are large. At this time, the anti-throwing piece is subjected to a large impact force instantaneously, and the viscous damping and the spring damper piece in the anti-throwing piece enter a working state simultaneously. Viscous damping greatly reduces and buffers the whip force, while spring dampers limit whip displacement and rotation. The flexible connection is realized from a plurality of angles by the anti-throwing piece, and an ideal stress effect is provided for the main body structure and the high-energy pipeline.

Furthermore, the anti-throwing piece can limit the thermal displacement of the pipeline in the operation stage and can also limit the throwing displacement and the rotation of the pipeline under the accidental action of the throwing force.

Other specific examples:

other specific embodiments of the invention are characterized in that: the inclination angle α is determined according to the load-bearing characteristics, and may be any angle outside the range of 0 to 30 °, for example: may be 1 °, 5 °, 10 °, 17 °, 20 °, 25 °, or 30 °. The rest is the same as in embodiment 1.

In summary, in the invention, when designing the anti-whipping restraint, the following principles are referred to: (1) in the operation and whipping prevention stages, the vibration damper has the restoring capability of returning to the original position after the vibration is terminated; (2) the damping coefficient is certain, and the energy consumption capability is better; (3) the durability is good, the performance is stable, and the elasticity or other physical and chemical properties are not greatly changed due to the change of conditions such as external temperature, humidity and the like; (4) the materials are convenient to obtain, and the method is economical and practical; (5) on the premise of meeting the requirements of bearing capacity and other performances, the manufacturing cost is reduced as much as possible. In order to defend the phenomena of injection and pipe throwing caused by pipe breakage of a high-energy pipeline under an extreme working condition, the anti-throwing piece is arranged in the anti-throwing structure and is used for resisting huge throwing force under the action of the pipe throwing of the high-energy pipeline. The traditional anti-throwing piece has limited energy dissipation and energy consumption capacity and cannot limit the displacement of the high-energy pipeline in the direction of throwing to the fixed end and the displacement and rotation in other directions; once the pipe is thrown to the fixed end, the fixed end and the pipe may be damaged, thereby involving the rest of the pipe and causing secondary damage.

The invention solves the problems of energy dissipation and limiting of the traditional anti-throwing piece, reduces the throwing force through flexible connection, and provides limiting and energy dissipation of circumferential rotation and each direction of translation for the high-energy pipeline. With this structure safety and the personnel safety of guarantee nuclear power station, thermal power plant, heat supply pipe network, the innovation through preventing the part scheme of getting rid of realizes the optimization that the energy dissipation was arranged, falls to minimumly with the influence of getting rid of the effect.