A restraint device and method for preventing creep buckling of a containment structure

Abstract

The application discloses a container structure anti-creep buckling restraint device and a restraint method, and belongs to the technical field of high-energy physics detectors.The container structure anti-creep buckling restraint device comprises a lower ring, a vertical rod, an upper ring and a rope, the lower ring is fixedly arranged at the bottom of a container, the lower end of the vertical rod is fixedly connected with the lower ring, the upper end of the vertical rod is fixedly connected with the upper ring, the number of the rope is one, the rope is periodically and uniformly wound between the upper ring and a liquid discharge pipe to form upward restraint on a spherical shell, and then the rope is periodically and uniformly wound between the lower ring and a liquid inlet pipe to form downward restraint on the spherical shell.In the container structure anti-creep buckling restraint device, the rope is used to suspend the spherical shell between the lower ring and the upper ring, so that the spherical shell can be subjected to the pulling force of the whole rope when the spherical shell floats up and sinks down, and the spherical shell can be prevented from buckling due to the deformation increase caused by creep, the container structure anti-creep buckling restraint device has a simple structure, is favorable for light propagation and improves the detection effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-energy physics detectors, and particularly relates to a container structure anti-creep buckling restraint device and a restraint method. BACKGROUND

[0002] High-energy physics detectors often use spherical containers as core detectors (such as Figure 1 ), and in this example, the core container of the high-energy physics detector is a spherical shell made of PMMA organic glass material, which is immersed in a container filled with external liquid. The spherical detector is filled with internal liquid, and the densities of the external liquid and the internal liquid are usually not equal. Since the internal liquid in the detector needs to be replaced frequently during operation, a liquid inlet pipe and a liquid outlet pipe are designed to communicate with the upper and lower ends of the spherical shell, respectively, and the liquid outlet pipe is used to pump out the internal liquid in the spherical shell to facilitate the replacement of the internal liquid.

[0003] Compared with other shaped containers, the spherical container has the following advantages:

[0004] 1. Relatively small stress concentration: the shape of the spherical shell can make the stress on the inside of the container be distributed relatively uniformly, compared with other shaped containers, the spherical shell can reduce the stress concentration phenomenon, thereby improving the structural stability and safety of the container;

[0005] 2. Maximum area to volume ratio: under the same volume, the outside of the spherical shell is relatively smoother, so the outer surface area of the spherical shell can be more fully utilized to increase the number of detection devices arranged;

[0006] 3. Easy to perform isotropic detection: the shape of the spherical shell can make the response of the detector to external environmental changes isotropic, that is, the detector can sense radiation and particles from any direction;

[0007] 4. Facilitate optical measurement: due to the relatively uniform optical properties of the spherical shell, better optical measurement conditions can be provided, and the optical design of the spherical shell is relatively simple, and is widely used in the fields of optics, lasers and optical communication.

[0008] In addition, in the field of high-energy physics, due to the requirements of optical measurement, the core detector (spherical shell) is often made of transparent materials. Traditional glass materials are prone to spontaneous breakage and are difficult to process, making them unsuitable as container materials for core detectors. Polymers such as plexiglass (PMMA) or other transparent materials such as PC have good transparency and processability, and will not spontaneously break, making them suitable as core container materials for high-energy physics detectors. Spherical detectors made of plexiglass also have the creep problem that exists in all polymer materials. Material creep may lead to continuous increase in structural deformation, which may eventually buckle under pressure. Therefore, PMMA plexiglass spherical containers are used.

[0009] Because spherical detectors operate in a unique environment, such as Figure 1 As shown, the core container is filled with liquids of different densities inside and out. Therefore, the surface of the core container will be subjected to huge pressure caused by the density difference between the inner and outer liquids. Overall, if the density of the inner liquid is greater than that of the outer liquid, the container will be subjected to a downward force; if the density of the inner liquid is less than that of the outer liquid, the container will be subjected to an upward buoyant force.

[0010] Therefore, we need to find a fixing method that can both support the detector and prevent it from buckling due to excessive deformation. At the same time, since the plexiglass detector ball is essentially an optical detector, we also need to ensure that this support method is simple enough to prevent an overly complicated support system from blocking light propagation and affecting the detection effect. Summary of the Invention

[0011] The purpose of this invention is to overcome the problems in the prior art and provide a constraint device and method for preventing creep buckling of container structures. This device is used to constrain the floating and sinking of a spherical shell, ensure that the tension at all points on the rope is equal, prevent the spherical shell from buckling due to increased creep deformation, and also facilitate light propagation, thereby improving the detection effect.

[0012] This invention provides a constraint device for preventing creep buckling of a container structure, comprising a spherical shell disposed within the container, with an inlet pipe at the top and a drain pipe at the bottom. The constraint device further includes a lower ring, a vertical rod, an upper ring, and a rope. The lower ring is fixedly disposed at the bottom of the container; the lower end of the vertical rod is fixedly connected to the lower ring; the upper ring is fixedly connected to the upper end of the vertical rod; and a single rope is used, which is periodically and evenly wound between the upper ring and the drain pipe to exert an upward constraint on the spherical shell, and then periodically and evenly wound between the lower ring and the inlet pipe to exert a downward constraint on the spherical shell, thus suspending the spherical shell between the lower and upper rings.

[0013] Preferably, the upper surface of the lower ring is uniformly fixed with a plurality of first fixing rings, and the lower surface of the upper ring is uniformly fixed with a plurality of second fixing rings, the first fixing ring and the second fixing ring are used for the rope to pass through, the number of the rope is one, the first end of the rope is tied to one of the second fixing rings of the upper ring, the second end is wound downward around the drain pipe and upward around the other second fixing ring of the upper ring, the second end is wound downward around the drain pipe again, and the steps are repeated in sequence until the rope is evenly wound around the upper ring; then the second end of the rope is wound around one of the first fixing rings of the lower ring, and the same winding method is used for the lower ring, the inlet pipe and the first fixing ring, and finally the second end of the rope is tied to the first fixing ring, and the tension of the rope is equal everywhere.

[0014] Preferably, the number of vertical rods is a plurality, and the plurality of vertical rods are evenly distributed around the vertical axis of the lower ring.

[0015] Preferably, the number of vertical rods is 3-4.

[0016] Preferably, the ring holes on the first fixing ring and the second fixing ring are provided with arc surfaces at both ends to reduce the friction with the rope.

[0017] Preferably, the horizontal axis of the ring hole on the first fixing ring is perpendicular to one of the radii of the lower ring, and the horizontal axis of the ring hole on the second fixing ring is perpendicular to one of the radii of the upper ring.

[0018] Preferably, the constraint method of the container structure anti-creep buckling constraint device comprises the following steps:

[0019] S1, the first end of the rope is hung and tied to the upper ring, marked as the first hanging point;

[0020] S2, the second end of the rope is wound downward around the drain pipe below the spherical shell to form a first winding section;

[0021] S3, then the second end of the rope is wound upward and hung on the upper ring to form a second winding section, and a second hanging point is marked, and the included angle between the first winding section and the second winding section in the horizontal plane direction is A;

[0022] S4, then the second end of the rope is wound and hung on the upper ring again to form a third winding section, and a third hanging point is marked, and the third hanging point is located between the first hanging point and the second hanging point;

[0023] S5, the first winding section, the second winding section and the third winding section form a group of constraints, the second end of the rope continues to be wound and the steps S2-S4 are repeated to form a plurality of groups of constraints, so that the plurality of groups of constraints are evenly distributed on the upper ring;

[0024] S6, after the plurality of constraints are arranged on the upper ring and evenly distributed, the second end of the rope is hung on the lower ring, and the lower ring is hung according to the similar steps of S1-S5, the rope is arranged around the corresponding liquid inlet pipe, and the hanging point on the lower ring is located at the middle of the adjacent two hanging points on the upper ring;

[0025] S7, after the second end of the rope is hung on the lower ring, the second end of the rope is tied to the last hanging point on the lower ring.

[0026] Preferably, the included angle A in step S3 is less than 180°.

[0027] Preferably, if the included angle A is 90°, at least four groups of constraints are required; if the included angle A is 120°, at least six groups of constraints are required.

[0028] Compared with the prior art, the beneficial effects of the present application are that: the container structure anti-creep buckling restraint device of the present application suspends the spherical shell between the lower ring and the upper ring by the rope, so that the spherical shell can be subjected to the tension of the entire rope when floating up and sinking, the tension of each part of the rope is equal, the buckling of the spherical shell due to the increase of creep deformation is avoided, and the spherical shell is also constrained to float up and sink, so that the relative position of the spherical shell and the container can be kept unchanged at all times, the container structure anti-creep buckling restraint device is simple in structure, is conducive to light propagation, and improves the detection effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the front view of the present application;

[0030] Figure 2 is the assembly schematic view of the lower ring, the upper ring and the plurality of vertical rods of the present application;

[0031] Figure 3 is the partial schematic view of the upper ring of the present application;

[0032] Figure 4 is the schematic view of a group of constraints of the present application;

[0033] Figure 5 is the schematic view of the included angle A of the present application;

[0034] Figure 6 is the first schematic view of the rope of the present application;

[0035] Figure 7 is the second schematic view of the rope of the present application;

[0036] Figure 8 is the third schematic view of the rope of the present application;

[0037] Figure 9 is the fourth schematic view of the rope of the present application;

[0038] Figure 10 Fifth schematic view of the rope of the application;

[0039] Figure 11 Sixth schematic view of the rope of the application.

[0040] Reference signs:

[0041] 1. lower ring, 2. container, 3. vertical rod, 4. upper ring, 5. rope, 6. spherical shell, 7. liquid discharge pipe, 8. liquid inlet pipe, 9. first section of rope, 10. second section of rope, 11. third section of rope. DETAILED DESCRIPTION

[0042] The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments. Based on the examples in the present application, all other examples obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0043] The present application provides a container structure anti-creep buckling restraint device, which comprises a spherical shell 6 arranged in a container 2, wherein the top of the spherical shell 6 is provided with a liquid inlet pipe 8 and the bottom of the spherical shell 6 is provided with a liquid discharge pipe 7. Figures 1-3 The container structure anti-creep buckling restraint device further comprises a lower ring 1, a vertical rod 3, an upper ring 4 and a rope 5, wherein the lower ring 1 is fixedly arranged at the bottom of the container 2, the lower end of the vertical rod 3 is fixedly connected to the lower ring 1, the upper end of the vertical rod 3 is fixedly connected to the upper ring 4, and the rope 5 is arranged periodically and uniformly between the upper ring 4 and the liquid discharge pipe 7 to form an upward restraint on the spherical shell 6, and then arranged periodically and uniformly between the lower ring 1 and the liquid inlet pipe 8 to form a downward restraint on the spherical shell 6, so that the spherical shell 6 is suspended between the lower ring 1 and the upper ring 4.

[0044] In the container structure anti-creep buckling restraint device of the present application, the spherical shell is suspended between the lower ring and the upper ring by the rope, so that the spherical shell can be subjected to the tension of the entire rope when floating up and sinking down, the tension at each position of the rope is equal, the spherical shell is prevented from buckling due to the increase in creep deformation, and the spherical shell is also restrained from floating up and sinking down, so that the relative position between the spherical shell and the container can be kept unchanged. The container structure anti-creep buckling restraint device has a simple structure, is conducive to light propagation, and improves the detection effect.

[0045] Preferably, as Figures 1-3The upper surface of the lower ring 1 is uniformly fixed with a plurality of first fixing rings, and the lower surface of the upper ring 4 is uniformly fixed with a plurality of second fixing rings, the first fixing ring and the second fixing ring are used for the rope 5 to pass through, the number of the rope 5 is one, the first end of the rope 5 is tied to one of the second fixing rings of the upper ring 4, the second end is downwardly wound around the drain pipe 7 and upwardly wound around another second fixing ring of the upper ring 4, the second end is again downwardly wound around the drain pipe 7, and the winding is sequentially repeated until the rope 5 is uniformly wound around the upper ring 4 for one round; then the second end of the rope 5 is downwardly wound around one of the first fixing rings of the lower ring 1, the same winding method is adopted to wind around the lower ring 1, the inlet pipe 8 and the first fixing ring, and finally the second end of the rope 5 is tied to the first fixing ring, and the tension of the rope 5 is equal everywhere.

[0046] The rope 5 is wound around the lower ring 1 and the upper ring 4 in a plurality of W-shaped tracks.

[0047] Preferably, as Figure 2 The number of the vertical rods 3 is a plurality, and the plurality of vertical rods 3 are uniformly distributed around the vertical axis of the lower ring 1; the number of the vertical rods 3 is 3-4.

[0048] The container structure anti-creep buckling restraint device has a simple structure, is conducive to light propagation, and improves the detection effect.

[0049] Preferably, the ring holes on the first fixing ring and the second fixing ring are provided with arc surfaces at both ends for reducing the friction with the rope 5; the horizontal axis of the ring hole on the first fixing ring is perpendicular to one of the radii of the lower ring 1, and the horizontal axis of the ring hole on the second fixing ring is perpendicular to one of the radii of the upper ring 4.

[0050] The purpose is to reduce the friction between the rope 5 and the first fixing ring and the second fixing ring.

[0051] Preferably, the restraint method of the container structure anti-creep buckling restraint device comprises the following steps:

[0052] S1, as Figures 3-4 , the first end of the rope 5 is hung and tied to the upper ring 4, which is marked as a first hanging point;

[0053] S2, as Figure 4 , the second end of the rope 5 is downwardly wound around the drain pipe 7 below the spherical shell 6 to form a first winding rope 9;

[0054] S3, as Figures 4-5 , then the second end of the rope 5 is upwardly wound and hung on the upper ring 4 to form a second winding rope 10, and a second hanging point is marked, and the included angle between the first winding rope 9 and the second winding rope 10 in the horizontal plane direction is A;

[0055] S4, as Figure 4 and Figures 6-7 Then the second end of the rope 5 is re-wound and hung on the upper ring 4 to form a third winding 11 and mark a third hanging point, and the third hanging point is located between the first hanging point and the second hanging point.

[0056] S5, as Figure 7 The first winding 9, the second winding 10 and the third winding 11 form a set of constraints, and the second end of the rope 5 is continuously wound and the steps of S2-S4 are repeated to form multiple sets of constraints, so that the multiple sets of constraints are uniformly distributed on the upper ring 4.

[0057] S6, as Figure 8 After the multiple sets of constraints are wound and uniformly distributed on the upper ring 4, the second end of the rope 5 is hung on the lower ring 1, and the lower ring 1 is hung in a similar manner to S1-S5, the rope 5 is wound around the corresponding liquid inlet pipe 8, and the hanging points on the lower ring 1 are located in the middle of the adjacent two hanging points on the upper ring 4.

[0058] S7, as Figures 9-11 After the second end of the rope 5 is hung on the lower ring 1, the second end of the rope 5 is tied to the last hanging point on the lower ring 1.

[0059] Preferably, the included angle A in step S3 is less than 180°.

[0060] If the included angle A is greater than or equal to 180°, the rope 5 cannot be wound around the liquid outlet pipe 7 and the liquid inlet pipe 8, and cannot effectively constrain the spherical shell 6.

[0061] Preferably, as Figures 7-11 If the included angle A is 90°, at least four sets of constraints are required; if the included angle A is 120°, at least six sets of constraints are required.

[0062] Since only one rope is used for the entire constraint, the stress at any position on the rope is the same, and the stress acting on the surface of the spherical shell is also the same, which ensures that the spherical shell will not deform unevenly and eventually creep due to the small force on the upper half of the spherical shell and the large force on the lower half of the spherical shell.

[0063] The present application ensures that the tightening force of the rope constraint on the spherical shell will not be large at the top and small at the bottom or small at the bottom and large at the top, regardless of whether the spherical shell is in a floating or sinking working condition.

[0064] The entire rope winding method effectively constrains the degrees of freedom of the spherical shell in all directions, and only one rope is used in total, which is more economical and simple than other traditional constraint schemes such as using a steel structure support scheme.

[0065] For the high-energy physics detector, the shell surface of the detector should be as transparent as possible, so the shell surface cannot be set with too large shielding, so the rope is used for constraint, which not only meets the constraint requirement, but also ensures that the shielding area of the shell surface is minimum.

[0066] In the application, the angle of the rope winding the drainage pipe 7 and the liquid inlet pipe 8 also needs to be considered, and the angle of the rope winding the drainage pipe 7 and the liquid inlet pipe 8 in the embodiment is 90°. In fact, the angle can be changed according to the situation, but the constraint condition is that the rope realizes the envelope of the circumference of the drainage pipe 7 and the liquid inlet pipe 8.

[0067] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A containment structure anti-creep buckling restraint device, comprising a spherical shell (6) arranged in a containment vessel (2), the spherical shell (6) having a liquid inlet pipe (8) at the top and a liquid outlet pipe (7) at the bottom, characterized in that, Also include: Lower ring (1), fixedly arranged at the bottom of the container (2); Vertical rod (3), the lower end is fixedly connected with the lower ring (1); Upper ring (4), the upper end of the vertical rod (3) is fixedly connected; Rope (5), the number is one, the rope (5) is periodically and uniformly wound between the upper ring (4) and the drain pipe (7), and the spherical shell (6) is formed upwardly constrained, then it is periodically and uniformly wound between the lower ring (1) and the liquid inlet pipe (8), and the spherical shell (6) is formed downwardly constrained, so that the spherical shell (6) is hung between the lower ring (1) and the upper ring (4).

2. The containment structure buckling restraint device of claim 1, wherein, The upper surface of the lower ring (1) is uniformly fixed with a plurality of first fixed rings, and the lower surface of the upper ring (4) is uniformly fixed with a plurality of second fixed rings, the first fixed ring and the second fixed ring are used for the rope (5) to pass through, the first end of the rope (5) is tied to one of the second fixed rings of the upper ring (4), the second end is wound downwardly around the drain pipe (7) and is wound upwardly on the other second fixed ring of the upper ring (4), the second end is wound downwardly around the drain pipe (7) again, and the steps are repeated in sequence until the rope (5) is uniformly wound around the upper ring (4) for one turn; then the second end of the rope (5) is wound on one of the first fixed rings of the lower ring (1), the lower ring (1), the liquid inlet pipe (8) and the first fixed ring are wound in the same way, and finally the second end of the rope (5) is tied to the first fixed ring.

3. The containment structure buckling restraint device of claim 1, wherein, The number of the vertical rod (3) is multiple, and the multiple vertical rods (3) are uniformly distributed around the vertical axis of the lower ring (1).

4. The containment structure buckling restraint device of claim 3, wherein, The number of the vertical rod (3) is 3-4.

5. The containment structure buckling restraint device of claim 2, wherein, The ring holes on the first fixed ring and the second fixed ring are provided with arc surfaces at both ends for reducing the friction with the rope (5).

6. The containment structure buckling restraint device of claim 2, wherein, The horizontal axis of the ring hole on the first fixed ring is perpendicular to one of the radii of the lower ring (1), and the horizontal axis of the ring hole on the second fixed ring is perpendicular to one of the radii of the upper ring (4).

7. The restraining method of the container structure against the creep buckling restraining device according to claim 1, wherein The steps include: S1, the first end of the rope (5) is hung and tied to the upper ring (4), and is marked as the first hanging point; S2, the second end of the rope (5) is wound downwardly around the drain pipe (7) below the spherical shell (6), and a first winding (9) is formed; S3, then the second end of the rope (5) is wound upwardly and hung on the upper ring (4), a second winding (10) is formed, a second hanging point is marked, and the included angle between the first winding (9) and the second winding (10) in the horizontal plane direction is A; S4, then the second end of the rope (5) is wound and hung on the upper ring (4) again, a third winding (11) is formed, and a third hanging point is marked, and the third hanging point is located between the first hanging point and the second hanging point; S5, the first winding (9), the second winding (10) and the third winding (11) form a group of constraints, the second end of the rope (5) is continuously wound and the steps S2-S4 are repeated, a plurality of constraints are formed, and the plurality of constraints are uniformly distributed on the upper ring (4); S6, after the multiple sets of constraints are completed and uniformly distributed around the upper ring (4), the second end of the rope (5) is hung on the lower ring (1), and the lower ring (1) is hung according to the similar steps of S1-S5, the rope (5) passes through the corresponding liquid inlet pipe (8), and the hanging point on the lower ring (1) is located at the middle of the adjacent two hanging points on the upper ring (4); S7, after the second end of the rope (5) is hung on the lower ring (1), the second end of the rope (5) is tied to the last hanging point on the lower ring (1).

8. The restraining method of the container structure against the creep buckling restraining device according to claim 7, wherein The included angle A in step S3 is less than 180°.

9. The restraining method of the container structure against the creep buckling restraining device according to claim 7, wherein If the included angle A is 90°, at least four sets of constraints are required; if the included angle A is 120°, at least six sets of constraints are required.

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