Large-compression-ratio electric packing pressing device and pressing method

Abstract

The embodiment of the invention relates to the technical field of high-temperature gas cooled reactor equipment, and particularly discloses a large-compression-ratio electric packing pressing device and a pressing method. The telescopic assembly is arranged on the base, the telescopic assembly comprises a telescopic rod, and the telescopic rod can do telescopic motion in the vertical direction; one end of the lever assembly is connected to the end, away from the base, of the telescopic rod, the lever assembly is rotationally connected with the telescopic rod, the lever assembly comprises a pressing plate, the pressing plate is located at the other end of the lever assembly, the pressing plate abuts against the upper side of the packing, and the pressing plate is arranged on the base in the first direction. The pressing plate can move up and down along with the telescopic movement of the telescopic rod, and the first direction is the vertical direction. By means of the mode, the packing in the displacement sealing cavity can be pressed through the pressing plate on the lever assembly, and the pressing efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of high temperature gas-cooled reactor equipment, and in particular to a large compression ratio electric packing pressing device and a pressing method. Background Art

[0002] The high temperature gas-cooled reactor pressure vessel is a key equipment in a nuclear power plant that is used to accommodate a nuclear reactor and withstand high temperature and high pressure. Its sealing performance is crucial to ensure the safe operation of the nuclear power plant. In the design and manufacture of the high temperature gas-cooled reactor pressure vessel, a specific sealing technology is usually used to ensure the sealing of the container and prevent the leakage of radioactive materials. In the related technology, packing (also called sealing filler) is usually used in the high temperature gas-cooled reactor pressure vessel. The packing is filled in the sealing cavity of the high temperature gas-cooled reactor pressure vessel and is covered with a pressure plate. The pressure plate and the high temperature gas-cooled reactor pressure vessel are connected by bolts.

[0003] In the process of realizing the present invention, the inventors of the present invention found that in the related art, the packing is usually pressed together by manually holding a pressure plate, which has low labor efficiency and is prone to small compression of the packing due to limited manual strength. The packing with a small compression ratio is prone to provide a reaction force to the pressure plate, which is prone to cause deformation of the pressure plate, thereby affecting the sealing effect of the pressure plate. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention provides a large compression ratio electric packing pressing device and a pressing method, which overcome the above problems or at least partially solve the above problems.

[0005] According to one aspect of the present invention, there is provided a large compression ratio electric packing pressing device, comprising a base; a telescopic assembly, which is arranged on the base, the telescopic assembly comprising a telescopic rod, and the telescopic rod can perform telescopic movement in a vertical direction; a lever assembly, one end of the lever assembly is connected to the end of the telescopic rod away from the base, the lever assembly is rotatably connected to the telescopic rod, the lever assembly comprises a pressing plate, the pressing plate is located at the other end of the lever assembly, the pressing plate abuts against the upper side of the packing, and along a first direction, the pressing plate can move up and down with the telescopic movement of the telescopic rod, and the first direction is a vertical direction.

[0006] In an optional embodiment, the lever assembly includes a first connecting arm, a support frame and a second connecting arm, one end of the first connecting arm is connected to one end of the second connecting arm, one end of the first connecting arm and one end of the second connecting arm are both rotatably connected to the support frame, the other end of the first connecting arm is rotatably connected to the telescopic rod, and the other end of the second connecting arm is connected to the pressing plate.

[0007] In an optional manner, the telescopic assembly includes a cylinder body, one end of the telescopic rod is arranged in the cylinder body, the other end of the telescopic rod is connected to the other end of the first connecting arm, and the telescopic rod can move in the vertical direction relative to the cylinder body; the large compression ratio electric packing pressing device also includes a control assembly and a displacement sensor, the displacement sensor is connected to the control assembly, the displacement sensor is arranged on the cylinder body, and the displacement sensor can be used to detect the displacement of the telescopic rod in the vertical direction.

[0008] In an optional manner, the high compression ratio electric packing pressing device also includes a pressure sensor, which is connected to the control component, one end of the pressure sensor is connected to the other end of the telescopic rod, and the other end of the pressure sensor is rotatably connected to the other end of the first connecting arm.

[0009] In an optional manner, two connecting blocks extend from the other end of the first connecting arm, the two connecting blocks are spaced apart along the second direction, and a first through hole is provided on the connecting block; a limiting portion is provided at the end of the pressure sensor away from the telescopic rod, and a second through hole is provided on the limiting portion, the second through hole is coaxially arranged with the first through hole along the second direction, the limiting portion is located between the two connecting blocks, and the limiting portion can rotate relative to the connecting block; the lever assembly also includes a first rotating shaft, the first rotating shaft is inserted into the first through hole and the second through hole, the axial direction of the first rotating shaft is along the second direction, and the second direction is perpendicular to the first direction.

[0010] In an optional manner, the outer surface of the first rotating shaft is covered with a rubber pad, and the connecting block and the limiting portion are both in contact with the rubber pad.

[0011] In an optional manner, the other end of the second connecting arm is detachably connected to the pressing plate.

[0012] In an optional manner, the pressing plate includes a connecting portion and a pressing portion, one end of the connecting portion is connected to the second connecting arm, the other end of the connecting portion is connected to the pressing portion, the side of the pressing portion facing away from the connecting portion abuts against the upper side of the packing, and along a third direction, the thickness of the connecting portion is less than the thickness of the pressing portion, and the third direction is perpendicular to the first direction.

[0013] In an optional manner, the length from the first connecting arm to the fulcrum on the support frame is L, the length from the second connecting arm to the fulcrum on the support frame is L1, and L1:L=1:13.

[0014] According to another aspect of the present invention, a clamping method is provided, which comprises S1: the control component is turned on, the control component controls the movement of the telescopic component and adjusts the power of the motor; S2: the telescopic rod pushes the lever component to move, and the pressing plate on the lever component presses the packing; S3: the pressure sensor transmits the driving force of the telescopic rod to the control component, and the control component determines whether the driving force of the telescopic rod reaches a preset pressure value; S4: if so, the telescopic rod continues to push the pressing plate on the lever assembly to move, if not, returns to step S1.

[0015] In an optional manner, the clamping method also includes: S5: the control component controls the movement of the telescopic component and adjusts the telescopic length of the telescopic rod; S6: the telescopic rod pushes the pressing plate on the lever assembly to move, and the displacement sensor transmits the displacement distance of the telescopic rod to the control component, and the control component determines whether the pressing plate reaches a preset depth based on the displacement distance of the telescopic rod; S7: if so, the telescopic rod continues to push the pressing plate on the lever assembly to move, if not, return to step S5.

[0016] According to another aspect of the present invention, a clamping method is provided, which comprises S11: the control component is turned on, the control component controls the movement of the telescopic component and adjusts the telescopic length of the telescopic rod; S12: the telescopic rod pushes the lever component to move, and the pressing plate on the lever component presses the packing; S13: the displacement sensor transmits the displacement distance of the telescopic rod to the control component, and the control component determines whether the pressing plate reaches a preset depth according to the displacement distance of the telescopic rod; S14: if so, the telescopic rod continues to push the pressing plate on the lever assembly to move, if not, returns to step S11.

[0017] The beneficial effect of the embodiment of the present invention is as follows: Different from the prior art, the embodiment of the present invention is provided with a base, a telescopic assembly and a lever assembly. The telescopic assembly is arranged on the base, the telescopic assembly includes a telescopic rod, the telescopic rod can perform telescopic movement in the vertical direction, one end of the lever assembly is connected to the end of the telescopic rod away from the base, the lever assembly and the telescopic rod are rotatably connected, the lever assembly includes a pressing plate, the pressing plate is located at the other end of the lever assembly, the pressing plate abuts against the upper side of the packing, and along the first direction, the pressing plate can move up and down with the telescopic movement of the telescopic rod, the first direction is the vertical direction, so that The user can use the telescopic assembly to control the pressing plate on the lever assembly to press the packing in the sealing cavity, so that the packing is compressed to a preset height. Compared with the method of manually holding the pressing plate to press the packing in the related art, the embodiment of the present application can use the lever assembly and the telescopic assembly to press the packing, which has a high pressing efficiency and saves labor costs. The compression of the packing is relatively large, and the reaction force of the packing can be reduced, thereby reducing the influence of the reaction force of the packing on the pressing plate, thereby avoiding the deformation of the pressing plate under the reaction force of the packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 This is a schematic diagram of an application scenario of an embodiment of a high compression ratio electric packing pressing device of the present invention;

[0020] Figure 2 It is a side sectional view of an application scenario of an embodiment of the high compression ratio electric packing pressing device of the present invention;

[0021] Figure 3 yes Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 4 It is a partial structural schematic diagram of a large compression ratio electric packing pressing device according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 6 yes Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0025] Figure 7 It is a schematic flow chart of an embodiment of the compacting method of the present invention;

[0026] Figure 8 It is a schematic flow chart of another embodiment of the compacting method of the present invention;

[0027] Fig. 9 It is a schematic flow chart of another embodiment of the compacting method of the present invention. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0030] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0031] It should be noted that: Figure 1-Figure 3 As shown, the high compression ratio electric packing pressing device in the present application is applied to a high temperature gas-cooled reactor pressure vessel 2000, and a sealed cavity 2001 is provided on the high temperature gas-cooled reactor pressure vessel 2000, and at least one packing 2002 is provided in the sealed cavity 2001, and the lower side of the packing 2002 abuts against the bottom of the sealed cavity 2001. The high compression ratio electric packing pressing device can only press one packing 2002, or two packings 2002, or more than two packings 2002 each time it performs a pressing work. It can be understood that the high compression ratio electric packing pressing device in the present application is not limited to being applied to pressing the packing 2002, and can also be used to press other sealing components.

[0032] See also Figure 4The large compression ratio electric packing pressing device 1000 includes a base 10, a telescopic assembly 20, a lever assembly 30, a pressure sensor 40, a displacement sensor and a control assembly. The telescopic assembly 20 is arranged on the base 10, the lever assembly 30 is connected to the telescopic assembly 20, the telescopic assembly 20 can drive the lever assembly 30 to move, the pressure sensor 40 and the displacement sensor are both connected to the control assembly, the pressure sensor 40 is arranged at the connection between the lever assembly 30 and the telescopic assembly 20, and the displacement sensor is arranged on the telescopic assembly 20. The base 10, the telescopic assembly 20, the lever assembly 30, the pressure sensor 40, the displacement sensor and the control assembly are described in detail below.

[0033] In order to better illustrate the structure of the large compression ratio electric packing pressing device 1000, the structure of the large compression ratio electric packing pressing device 1000 will be described in combination with the X, Y, and Z axes. The X, Y, and Z axes are perpendicular to each other, the first direction is along the Z axis, the second direction is along the X axis, and the third direction is along the Y axis.

[0034] For the above-mentioned base 10 and telescopic assembly 20, as Figure 4 and Figure 5 As shown, the telescopic assembly 20 is arranged on the base 10, and the telescopic assembly 20 includes a telescopic rod 201, a cylinder 202, a gear box 203 and a motor 204. One end of the telescopic rod 201 is arranged in the cylinder 202, and the cylinder 202 is connected to the motor 204 through the gear box 203. The telescopic rod 201 is connected to the gear box 203. The telescopic rod 201 can move in the vertical direction (first direction Z) relative to the cylinder 202, and the motor 204 can control the movement rate of the telescopic rod 201 in the vertical direction. It can be understood that: in order to realize the movement of the telescopic rod 201 in the vertical direction, the movement principle of the telescopic assembly 20 is not limited to the above, and can also be other ways, such as: the telescopic movement principle of the piston rod and the cylinder, the movement principle of the slide rail and the slider, etc.

[0035] For the lever assembly 30 and the pressure sensor 40, as shown in FIG. Figure 4-Figure 6As shown, the lever assembly 30 includes a first connecting arm 301, a support frame 302, a second connecting arm 303, a second rotating shaft 304 and a pressing plate 305. One end of the first connecting arm 301 and one end of the second connecting arm 303 are both rotatably connected to the support frame 302 through the second rotating shaft 304. The other end of the first connecting arm 301 is rotatably connected to an end of the telescopic rod 201 away from the base 10. The pressing plate 305 is arranged at the other end of the second connecting arm 303. The pressing plate 305 abuts against the upper side of the packing 2002. The pressing plate 305 can move up and down with the telescopic movement of the telescopic rod 201. One end of the pressure sensor 40 is connected to the other end of the telescopic rod 201, and the other end of the pressure sensor 40 can be rotatably connected to the other end of the first connecting arm 301. The pressure sensor 40 is located between the first connecting arm 301 and the telescopic rod 201. The pressure sensor 40 can be used to detect the pushing force of the telescopic rod 201 pushing the first connecting arm 301. Among them, the telescopic rod 201 moves in the vertical direction, which can drive the first connecting arm 301 to rotate around the support frame 302, and then drive the second connecting arm 303 to rotate around the support frame 302. The rotating second connecting arm 303 drives the pressing plate 305 to move up and down. When the packing 2002 needs to be compressed, it is only necessary to use the lever assembly 30 to drive the pressing plate 305 to move downward, and use the pressing plate 305 to compress the packing 2002. When the compression movement is completed or the number of packing 2002 needs to be supplemented, it is only necessary to use the lever assembly 30 to drive the pressing plate 305 to move upward so that the pressing plate 305 extends out of the sealing cavity 2001.

[0036] It can be understood that: since the pressure sensor 40 can detect the pushing force of the telescopic rod 201 pushing the first connecting arm 301, the user can calculate the pressing force applied by the pressing plate 305 to the packing 2002 according to the ratio between the length of the first connecting arm 301 to the fulcrum on the support frame 302 and the length of the second connecting arm 303 to the fulcrum on the support frame 302. The user can set the length ratio of the first connecting arm 301 and the second connecting arm 303 to the fulcrum on the support frame 302 according to actual needs, and no specific limitation is made in this application, for example: the length of the first connecting arm 301 to the fulcrum on the support frame 302 is L, the length of the second connecting arm 303 to the fulcrum on the support frame 302 is L1, and L1:L=1:13.

[0037] In some embodiments, the other end of the second connecting arm 303 is detachably connected to the pressing plate 305 . With this arrangement, the user can replace the pressing plate 305 of different lengths along the first direction Z according to actual needs to compress different numbers of packings 2002 .

[0038] In some embodiments, two connecting blocks 3011 extend from the other end of the first connecting arm 301 , and the two connecting blocks 3011 are spaced apart along the second direction X. A first through hole (not marked) is provided on the connecting block 3011 , and the two connecting blocks 3011 are used to connect the pressure sensor 40 .

[0039] In some embodiments, a limiting portion 401 is provided at one end of the pressure sensor 40 away from the telescopic rod 201, and a second through hole (not shown) is provided on the limiting portion 401. The second through hole is coaxially arranged with the first through hole along the second direction X. The limiting portion 401 is located between the two connecting blocks 3011, and the limiting portion 401 can rotate relative to the connecting block 3011. The lever assembly 30 also includes a first rotating shaft 306, which is inserted into the first through hole and the second through hole. The axial direction of the first rotating shaft 306 is along the second direction X. The first rotating shaft 306 is used to connect the two connecting blocks 3011 and the limiting portion 401, thereby realizing the connection of the pressure sensor 40 to the other end of the first connecting arm 301. Among them, the limiting portion 401 is located between the two connecting blocks 3011. In this arrangement, when the telescopic rod 201 drives the pressure sensor 40 to push the first connecting arm 301, the driving force provided by the telescopic rod 201 can be transmitted to the two connecting blocks 3011 on the first connecting arm 301 through the limiting portion 401, and the two connecting blocks 3011 can ensure the stable rotation of the first connecting arm 301.

[0040] In some embodiments, the outer surface of the first rotating shaft 306 is coated with a rubber pad 3061, and the connecting block 3011 and the limiting part 401 are in contact with the rubber pad 3061. Since the base 10 is usually placed on a horizontal plane or connected with other components during the working process of the electric packing pressing device with a large compression ratio, when the base 10 cannot be connected with other components, the user can place the base 10 on a horizontal plane, and when the motor 204 on the telescopic assembly 20 moves, the telescopic rod 201 drives the pressure sensor 40 to push the first connecting arm 301, and the limiting part 401 on the pressure sensor 40 pushes the first rotating shaft 306, thereby pushing the first connecting arm 301, and the rubber pad 3061 can provide part of the reaction force for the limiting part 401, reduce the overturning force of the telescopic rod 201 on the base 10, and avoid the tipping of the telescopic assembly 20, so as to ensure the normal operation of the electric packing pressing device with a large compression ratio.

[0041] In some embodiments, the pressing plate 305 includes a connecting portion 3051 and a pressing portion 3052, one end of the connecting portion 3051 is connected to the second connecting arm 303, the other end of the connecting portion 3051 is connected to the pressing portion 3052, the side of the pressing portion 3052 away from the connecting portion 3051 is in contact with the upper side of the packing 2002, and the pressing portion 3052 can be used to press the packing 2002 to compress the packing 2002 to a preset thickness. Optionally, along the third direction Y, the thickness of the connecting portion 3051 is less than the thickness of the pressing portion 3052, so that the contact between the connecting portion 3051 and the side wall of the sealed cavity 2001 can be reduced, thereby reducing the impact on the side wall of the sealed cavity 2001.

[0042] In some embodiments, an external connection portion 3021 is further provided at the bottom end of the support frame 302, and an external connection hole 30211 and a bolt 30212 are provided on the external connection portion 3021, one end of the bolt 30212 is inserted into the external connection hole 30211, and one end of the bolt 30212 can be used to externally connect other components to fix the support frame 302 to the other components, for example: the bolt 30212 on the support frame 302 can be connected to the outer surface of the high temperature gas-cooled reactor pressure vessel 2000 to fix the support frame 302 to the outer surface of the high temperature gas-cooled reactor pressure vessel 2000 to ensure that the lever assembly 30 can work normally.

[0043] Regarding the above-mentioned control component and displacement sensor, the displacement sensor is connected to the control component, the displacement sensor is arranged on the cylinder body 202, and the displacement sensor can be used to detect the displacement of the telescopic rod 201 in the vertical direction. Optionally, the control component includes a display screen, which can be used to display relevant displacement data of the displacement sensor and relevant pressure data of the pressure sensor 40, etc. The user can directly observe the pushing displacement of the telescopic rod 201 in the first direction Z through the display screen and obtain the pressing displacement of the pressing plate 305 in the first direction Z through simple conversion. The pressing displacement of the pressing plate 305 in the first direction Z can also be displayed through the display screen. For example: the length from the first connecting arm 301 to the fulcrum on the support frame 302 is L, the length from the second connecting arm 303 to the fulcrum on the support frame 302 is L1, the displacement of the telescopic rod 201 is d, and the pressing displacement of the pressing plate 305 is d1, then d1=L×d / L1. Similarly, the pushing force of the telescopic rod 201 to push the first connecting arm 301 is F, and the pressing force of the pressing plate 305 to press the packing 2002 is F1, then F=L1×F1 / L.

[0044] In addition, in order to verify the compression effect of the large compression ratio electric packing compression device 1000 in the present application, the inventor assembled a prototype according to actual needs and conducted relevant comparative tests, as follows:

[0045] Five packings are used, the thickness of a single packing is 25.5 mm, and the total thickness of the five packings is 127.5 mm. Using the manual pressing method in the prior art, the total compression of the five packings is 18 mm, and the compression ratio of the five packings in the prior art is 14.1%. In the present application, the pressing plate is electrically driven to first compress a single packing, and then, while the compression of the single packing remains basically unchanged, the second packing is added to continue compressing, and so on, until the fifth packing is added. After that, the total compression of the five packings is 32 mm, and the compression ratio of the five packings in the present application is 25%. It can be seen that the technical solution in the present application has a better compression effect on the packing and has a larger compression amount and compression ratio.

[0046] In the embodiment of the present invention, a base 10, a telescopic assembly 20 and a lever assembly 30 are provided. The telescopic assembly 20 is provided on the base 10, and the telescopic assembly 20 includes a telescopic rod 201, and the telescopic rod 201 can perform telescopic movement in the vertical direction. One end of the lever assembly 30 is connected to the end of the telescopic rod 201 away from the base 10, and the lever assembly 30 is rotatably connected to the telescopic rod 201. The lever assembly 30 includes a pressing plate 305, and the pressing plate 305 is located at the other end of the lever assembly 30. The pressing plate 305 abuts against the upper side of the packing 2002, and along the first direction Z, the pressing plate 305 can move up and down with the telescopic movement of the telescopic rod 201, and the first direction Z is the vertical direction, so that The user can use the telescopic component 20 to control the pressing plate 305 on the lever component 30 to press the packing 2002 located in the sealing cavity 2001, so that the packing 2002 is compressed to a preset height. Compared with the method of manually holding the pressing plate to press the packing 2002 in the related art, the embodiment of the present application can use the lever component 30 and the telescopic component 20 to cooperate to achieve the pressing of the packing 2002, the pressing efficiency is high, the labor cost is saved, and the compression of the packing 2002 is relatively large. At the same time, the reaction force of the packing 2002 can be reduced, and the influence of the reaction force of the packing 2002 on the pressing plate is reduced, thereby avoiding the deformation of the pressing plate under the reaction force of the packing 2002.

[0047] like Figure 7 As shown, the present invention also provides an embodiment of a clamping method using the above-mentioned large compression ratio electric packing clamping device, and the clamping method includes S1: the control component is turned on, the control component controls the movement of the telescopic component 20, and adjusts the power of the motor 204; S2: the telescopic rod 201 pushes the lever assembly 30 to move, and the pressing plate 305 on the lever assembly 30 presses the packing; S3: the pressure sensor 40 transmits the driving force of the telescopic rod 201 to the control component, and the control component determines whether the driving force of the telescopic rod 201 reaches a preset pressure value; S4: if so, the telescopic rod 201 continues to push the pressing plate 305 on the lever assembly 30 to move, if not, return to step S1.

[0048] In the embodiment of the pressing method, the pressure sensor 40 is used alone. In order to better control the pressing force of the pressing plate 305 on the packing, using the above-mentioned pressing method, the control component can judge whether the pushing force of the telescopic rod 201 reaches the preset pressure value based on the pushing force of the telescopic rod 201 fed back by the pressure sensor 40, and then know whether the pressing force of the corresponding pressing plate 305 on the packing reaches the preset value. When the pushing force of the telescopic rod 201 does not reach the preset pressure value, the control component can adjust the power of the motor 204 accordingly to achieve the adjustment of the pushing force of the telescopic rod 201, so that the pressing force of the pressing plate 305 on the packing reaches the preset value.

[0049] In some embodiments, Figure 8 As shown, the above-mentioned clamping method also includes S5: the control component controls the movement of the telescopic component 20 and adjusts the telescopic length of the telescopic rod 201; S6: the telescopic rod 201 pushes the pressing plate 305 on the lever assembly 30 to move, and the displacement sensor transmits the displacement distance of the telescopic rod 201 to the control component, and the control component determines whether the pressing plate 305 reaches a preset depth according to the displacement distance of the telescopic rod 201; S7: if so, the telescopic rod 201 continues to push the pressing plate 305 on the lever assembly 30 to move, if not, return to step S5.

[0050] In the embodiment of the pressing method, the pressure sensor 40 and the displacement sensor are used in combination. In order to better control the pressing of the packing by the pressing plate 305 to reach a preset depth, the control component can judge whether the pressing plate 305 reaches the preset depth based on the displacement distance of the telescopic rod 201 fed back by the displacement sensor. When the displacement distance of the telescopic rod 201 does not reach the preset displacement distance, the control component can adjust the telescopic length of the telescopic rod 201 accordingly so that the pressing plate 305 reaches the preset depth.

[0051] like Fig. 9As shown, the present invention also provides an embodiment of a clamping method using the above-mentioned large compression ratio electric packing clamping device, and the clamping method includes S11: the control component is turned on, the control component controls the movement of the telescopic component 20, and adjusts the telescopic length of the telescopic rod 201; S12: the telescopic rod 201 pushes the lever assembly 30 to move, and the pressing plate 305 on the lever assembly 30 presses the packing; S13: the displacement sensor transmits the displacement distance of the telescopic rod 201 to the control component, and the control component determines whether the pressing plate 305 reaches a preset depth according to the displacement distance of the telescopic rod 201; S14: if so, the telescopic rod 201 continues to push the pressing plate 305 on the lever assembly 30 to move, if not, return to step S11.

[0052] In an embodiment of the pressing method, the displacement sensor is used alone. In order to better control the pressing of the packing by the pressing plate 305 to reach a preset depth, the control component can determine whether the pressing plate 305 has reached a preset depth based on the displacement distance of the telescopic rod 201 fed back by the displacement sensor. When the displacement distance of the telescopic rod 201 does not reach the preset displacement distance, the control component can correspondingly adjust the telescopic length of the telescopic rod 201 so that the pressing plate 305 reaches the preset depth.

[0053] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high compression ratio electric packing pressing device, applied to a high temperature gas-cooled reactor pressure vessel, wherein the high temperature gas-cooled reactor pressure vessel is provided with a sealed cavity, wherein at least one packing is provided in the sealed cavity, wherein the lower side of the packing abuts against the bottom of the sealed cavity, and wherein: The high compression ratio electric packing pressing device comprises: Base; A telescopic assembly is arranged on the base, and the telescopic assembly includes a telescopic rod, and the telescopic rod can perform telescopic movement in a vertical direction; A lever assembly, one end of which is connected to an end of the telescopic rod facing away from the base, the lever assembly is rotatably connected to the telescopic rod, the lever assembly includes a pressing plate, the pressing plate is located at the other end of the lever assembly, the pressing plate abuts against the upper side of the packing, and along a first direction, the pressing plate can move up and down with the telescopic movement of the telescopic rod, the first direction being a vertical direction.

2. The high compression ratio electric packing pressing device according to claim 1 is characterized in that: The lever assembly includes a first connecting arm, a support frame and a second connecting arm, one end of the first connecting arm is connected to one end of the second connecting arm, one end of the first connecting arm and one end of the second connecting arm are both rotatably connected to the support frame, the other end of the first connecting arm is rotatably connected to the telescopic rod, and the other end of the second connecting arm is connected to the pressing plate.

3. The high compression ratio electric packing pressing device according to claim 2 is characterized in that: The telescopic assembly includes a cylinder and a motor, one end of the telescopic rod is arranged in the cylinder, the other end of the telescopic rod is connected to the other end of the first connecting arm, the cylinder is in transmission connection with the motor, and the telescopic rod can move in a vertical direction relative to the cylinder; The large compression ratio electric packing pressing device further comprises a control component and a displacement sensor. The displacement sensor is connected to the control component and is arranged on the cylinder body. The displacement sensor can be used to detect the displacement of the telescopic rod in the vertical direction.

4. The high compression ratio electric packing pressing device according to claim 3 is characterized in that: The high compression ratio electric packing pressing device also includes a pressure sensor, which is connected to the control component, one end of the pressure sensor is connected to the other end of the telescopic rod, and the other end of the pressure sensor is rotatably connected to the other end of the first connecting arm.

5. The high compression ratio electric packing pressing device according to claim 4 is characterized in that: Two connecting blocks extend from the other end of the first connecting arm, the two connecting blocks are spaced apart along the second direction, and the connecting blocks are provided with a first through hole; A limiting portion is provided at one end of the pressure sensor away from the telescopic rod, a second through hole is provided on the limiting portion, the second through hole is coaxially arranged with the first through hole along a second direction, the limiting portion is located between the two connecting blocks, and the limiting portion can rotate relative to the connecting block; The lever assembly further includes a first rotating shaft, which is inserted into the first through hole and the second through hole. The axial direction of the first rotating shaft is along a second direction, and the second direction is perpendicular to the first direction.

6. The high compression ratio electric packing pressing device according to claim 5 is characterized in that: The outer surface of the first rotating shaft is covered with a rubber pad, and the connecting block and the limiting part are both in contact with the rubber pad.

7. The high compression ratio electric packing pressing device according to claim 2 is characterized in that: The pressing plate includes a connecting portion and a pressing portion, one end of the connecting portion is connected to the second connecting arm, the other end of the connecting portion is connected to the pressing portion, a side of the pressing portion facing away from the connecting portion abuts against an upper side of the packing, and along a third direction, a thickness of the connecting portion is smaller than a thickness of the pressing portion, and the third direction is perpendicular to the first direction.

8. A compression method using the large compression ratio electric packing compression device according to any one of claims 4 to 7, characterized in that: The compacting method comprises: S1: The control component is turned on, and the control component controls the movement of the telescopic component and adjusts the power of the motor; S2: the telescopic rod pushes the lever assembly to move, and the pressing plate on the lever assembly presses the packing; S3: the pressure sensor transmits the driving force of the telescopic rod to the control component, and the control component determines whether the driving force of the telescopic rod reaches a preset pressure value; S4: If yes, the telescopic rod continues to push the pressing plate on the lever assembly to move; if no, return to step S1.

9. The pressing method according to claim 8, characterized in that: The compacting method further comprises: S5: the control component controls the movement of the telescopic component and adjusts the telescopic length of the telescopic rod; S6: the telescopic rod pushes the pressing plate on the lever assembly to move, the displacement sensor transmits the displacement distance of the telescopic rod to the control assembly, and the control assembly determines whether the pressing plate reaches a preset depth according to the displacement distance of the telescopic rod; S7: If yes, the telescopic rod continues to push the pressing plate on the lever assembly to move; if no, return to step S5.

10. A compression method using the large compression ratio electric packing compression device according to any one of claims 4 to 7, characterized in that: The compacting method comprises: S11: the control component is turned on, and the control component controls the movement of the telescopic component and adjusts the telescopic length of the telescopic rod; S12: the telescopic rod pushes the lever assembly to move, and the pressing plate on the lever assembly presses the packing; S13: the displacement sensor transmits the displacement distance of the telescopic rod to the control component, and the control component determines whether the pressing plate reaches a preset depth according to the displacement distance of the telescopic rod; S14: If yes, the telescopic rod continues to push the pressing plate on the lever assembly to move; if no, return to step S11.

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