Automatic sealing door and radioactive equipment room

Abstract

The invention discloses an automatic sealing door which comprises a door plate assembly and a sealing assembly, the sealing assembly is arranged between the door plate assembly and a wall plate where a door opening is located, and the door plate assembly can press the sealing assembly on the wall plate so as to seal a gap between the door plate assembly and the wall plate while sealing the door opening. The sealing assembly comprises a sealing ring and a retainer, the sealing ring is embedded in the retainer so that the sealing ring and the retainer can form an integral module which can be disassembled, assembled and replaced together, and the retainer is of a rigid frame structure and is detachably connected to the wall plate so that the integral module can be replaced by disassembling and assembling the rigid retainer. The sealing door is reasonable in structural design, good in sealing performance, safe and reliable, the sealing ring is easy to replace and does not need to be operated and replaced by operators, and the invention further provides a radioactive equipment room.

Description

Technical Field

[0001] The invention particularly relates to an automatic sealing door and a radioactive equipment room. Background Art

[0002] A hot room is a device (or equipment room) with a radioactive environment and certain requirements for sealing. Due to radioactive reasons, hot rooms need to use remotely replaceable equipment as much as possible to reduce the frequency of personnel operations. Automatic sealing doors are a commonly used device in hot rooms and play an important role in ensuring the sealing of hot rooms.

[0003] The automatic sealing door in the hot room should be safe and reliable, the mechanical parts should be strong and durable, and the vulnerable parts should be easy to replace. The sealing ring is a major vulnerable part of the automatic sealing door, which is prone to aging and failure under frequent compression and radiation environments. However, due to space and environmental conditions, it is difficult, time-consuming and dangerous for workers to enter the hot room to replace the sealing ring. If mechanical operating equipment is used to directly replace the sealing ring, it is difficult to ensure installation accuracy and sealing. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic sealing door with reasonable structural design and good sealing performance in view of the above-mentioned deficiencies in the prior art.

[0005] It is safe and reliable, and the sealing ring is easy to replace without the need for operators to operate and replace it. The invention also provides a radioactive equipment room.

[0006] The present invention provides an automatic sealing door, comprising a door panel assembly and a sealing assembly, wherein the sealing assembly is arranged between the door panel assembly and a wall panel where a door opening is located, and the door panel assembly can press the sealing assembly against the wall panel to seal the gap between the door panel assembly and the wall panel while closing the door opening, and the sealing assembly comprises a sealing ring and a retaining frame, wherein the sealing ring is embedded in the retaining frame so that the sealing ring and the retaining frame form an integral module that can be disassembled and replaced together, and the retaining frame is a rigid frame structure that can be detachably connected to the wall panel so that the replacement of the integral module can be achieved by disassembling and assembling the rigid retaining frame.

[0007] Furthermore, in the retaining frame, sealing rings are embedded on both end surfaces facing the door panel assembly and the wall panel, and the retaining frame and the wall panel are provided with set relative movable margins along the pressing direction of the door panel assembly.

[0008] Furthermore, the sealing assembly also includes a support ear and a clamping piece, and the support ear and the clamping piece are both arranged on the wall panel. The retaining frame is hung on the wall panel through the support ear and then clamped and fixed by the clamping piece.

[0009] Furthermore, the clamping member includes a seat body, an elastic member and a clamping pin. The seat body is provided with a hole perpendicular to the clamping direction of the door panel assembly. The clamping pin is arranged in the hole and is connected to the inner surface of the hole through the elastic member to enable the clamping pin to extend and retract at the end of the hole toward the door opening. The clamping member is provided with two groups and is symmetrically arranged on both sides of the door opening of the wall panel so that the clamping pin can extend and clamp the fixed retaining frame under the elastic member's support.

[0010] Furthermore, the hole is a stepped hole, and the stepped hole is divided into a first hole section, a second hole section and a third hole section from one end facing the door opening to the other end. The apertures of the first hole section and the third hole section are both larger than the aperture of the second hole section. The clamping member also includes a screw, which is arranged in the third hole section and has an end diameter larger than the aperture of the second hole section. The clamping pin is in the shape of a stepped shaft and is arranged in the first hole section. The diameter of the shaft section facing the door opening is larger than the diameter of the shaft section away from the door opening, and the small diameter shaft section passes through the second hole section and is threadedly connected to the screw. One end of the elastic member is connected to the step surface between the large diameter shaft section and the small diameter shaft section in the clamping pin, and the other end is connected to the step surface between the first hole section and the second hole section.

[0011] Furthermore, the support ear includes an ear seat and a pin. The ear seat is installed on the wall panel and is symmetrically arranged on both sides of the door opening of the wall panel. A groove is provided on the ear seat, and the groove is provided with a vertical upward opening. The opening allows the pin to enter and exit. The pin is installed on both sides of the retaining frame. The retaining frame moves vertically downward to embed the pin into the groove of the ear seat, and then is clamped and fixed by the clamping member.

[0012] Furthermore, the automatic sealing door also includes a transmission assembly, and the door panel assembly is arranged along a vertical plane parallel to the wall panel. The door panel assembly is connected to the transmission assembly and is lifted and lowered in a vertical direction under the drive of the transmission assembly. A hinge mechanism is provided on the door panel assembly. After the door panel assembly descends to contact the ground, the hinge mechanism drives the door panel assembly to move horizontally to press the sealing assembly against the wall panel to close the door. When the door panel assembly rises, the hinge mechanism drives the door panel assembly to move horizontally to separate from the sealing assembly to open the door.

[0013] Furthermore, the door panel assembly includes an inner door panel and an outer door panel arranged parallel to each other, the inner door panel is arranged between the outer door panel and the wall panel, the hinge mechanism includes a plurality of connecting rods, the connecting rods are parallel to each other and have the same length, and both ends of each connecting rod are hingedly connected to the inner door panel and the outer door panel, so that the connecting rods, the inner door panel and the outer door panel form a movable parallelogram mechanism, the outer door panel is connected to the transmission assembly, so that when the inner door panel is driven to descend by the transmission assembly, the inner door panel is first supported by the ground, thereby driving the connecting rod to rotate during the descent of the outer door panel, so that the width of the connecting rod supporting the inner door panel and the outer door panel is gradually increased, so that the inner door panel moves horizontally on the ground to press the sealing assembly against the wall panel to close the door; and, when the outer door panel is pulled up by the transmission assembly, the outer door panel is first separated from the ground, so that the connecting rod rotates under the drag of the inner door panel, so that the width of the connecting rod supporting the inner door panel and the outer door panel is gradually reduced, so that the inner door panel moves horizontally on the ground and separates from the sealing assembly to open the door.

[0014] Furthermore, the automatic sealing door also includes a guide rail assembly, which is arranged on the wall panel in the vertical direction, and the outer door panel is connected to the guide rail assembly to move in the vertical direction under the limitation of the guide rail assembly.

[0015] Furthermore, the transmission assembly includes a motor, a lead screw, a connecting member and a supporting member. The lead screw is arranged in a vertical direction and connected to the driving end of the motor. The connecting member is sleeved on the lead screw and connected to the door panel assembly to drive the door panel assembly to rise and fall along the lead screw when the motor drives the lead screw to rotate. Support members are provided at both ends of the connecting member's movement stroke, and the supporting members are connected to the wall panel to support the lead screw.

[0016] The present invention also provides a radioactive equipment room, including an equipment room body and the above-mentioned automatic sealing door, wherein a door opening connecting the inside and outside of the equipment room body is opened on the wall panel of the equipment room body, and the automatic sealing door is installed on the wall panel where the door opening is located in the equipment room body, and is used to open and close the door opening.

[0017] The automatic sealing door of the present invention does not use conventional sealing rings set on the door opening or door panels for sealing, but sets the sealing components separately into a set of integral modular structures that can be disassembled and replaced as a whole, and achieves sealing by pressing the door panel components. Moreover, the sealing components themselves do not use a flexible structure like conventional sealing rings, but are provided with a rigid retaining frame, and when replacing, the retaining frame is subjected to corresponding disassembly and assembly operations.

[0018] In this setting, firstly, since the object of the operation is a rigid structure, compared with the flexible structure of the sealing ring itself, not only is the structure more regular, which is convenient for aligning the operating position, but it is also more durable and will not be easily damaged. Therefore, even if remote operation equipment such as a manipulator is used, the replacement operation can be achieved; secondly, precisely because a manipulator can be used for replacement, there is no need for personnel to operate it personally, which avoids the adverse effects of the environment in which the sealed door is located on personnel, improves safety, and is more suitable for use in radioactive equipment rooms and hot rooms; more importantly, the flexible sealing ring itself does not need to be operated during the operation (for example, putting the sealing ring on the door panel, putting the sealing ring on the edge of the door opening), so the sealing performance will not be affected by the operation accuracy problem, and the sealing is good and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the automatic sealing door in Embodiment 1 of the present invention;

[0020] Figure 2 is a schematic cross-sectional structural diagram of the automatic sealing door in Embodiment 1 of the present invention;

[0021] Figure 3 This is a front view of the sealing assembly structure of the automatic sealing door in Example 1 of the present invention;

[0022] Figure 4 is a side view of the sealing assembly structure of the automatic sealing door in Example 1 of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the clamping member of the automatic sealing door in Example 1 of the present invention;

[0024] Figure 6 is a schematic structural diagram of a door panel assembly of an automatic sealing door in Embodiment 1 of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the guide rail assembly of the automatic sealing door in Example 1 of the present invention;

[0026] Figure 8 Schematic diagram of the transmission assembly structure of the automatic sealing door in Example 1 of the present invention;

[0027] Fig. 91 is a schematic diagram of the mounting bracket structure of the automatic sealing door in Example 1 of the present invention. In the figure: 1, door panel assembly; 11, inner door panel; 111, roller; 12, outer door panel; 121, limit block; 13, hinge mechanism; 131, connecting rod; 2, sealing assembly; 21, sealing ring; 22, retaining frame; 221, anti-slip plate; 23, support ear; 24, clamping member; 241, seat body; 242, elastic member; 243, clamping pin; 244, screw; 245, hole; 2451, first hole section; 245 2. Second hole section; 2453. Third hole section; 3. Wall panel; 31. Flange; 32. Spacer; 4. Transmission assembly; 41. Motor; 42. Screw; 43. Connector; 44. Support; 45. Coupling; 5. Guide rail assembly; 51. Guide rail mounting seat; 52. Linear guide; 6. Mounting bracket; 61. Lower mounting plate; 62. Side support plate; 63. Upper mounting plate; 64. Motor mounting bracket; 7. Switch assembly. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0030] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] Example 1

[0033] The automatic sealing door of this embodiment can be used in the field of nuclear material and nuclear fuel processing, specifically in hot chambers or equipment rooms. It is a device that can be operated by a manipulator (replacing the sealing component 2), and can be said to be an automatic sealing door whose sealing ring can be replaced remotely.

[0034] like Figures 1 to 4 As shown, the automatic sealing door of this embodiment includes a door panel assembly 1 and a sealing assembly 2. The sealing assembly 2 is arranged between the door panel assembly 1 and a wall panel 3 where a door opening is located. The door panel assembly 1 can press the sealing assembly 2 onto the wall panel 3 to seal the gap between the door panel assembly 1 and the wall panel 3 while closing the door opening. The sealing assembly 2 includes a sealing ring 21 and a retaining frame 22. The sealing ring 21 is embedded in the retaining frame 22 so that the sealing ring 21 and the retaining frame 22 form an integral module that can be disassembled and replaced together (in this embodiment, the integral module is referred to as a sealing ring retaining frame). The retaining frame 22 is a rigid frame structure that can be detachably connected to the wall panel 3 so that the replacement of the integral module can be achieved by disassembling and assembling the rigid retaining frame 22.

[0035] The automatic sealing door of this embodiment does not use a conventional sealing ring set on the door opening or door panel for sealing, but the sealing assembly 2 is separately set as a set of integral modular structures that can be disassembled and replaced as a whole, and the sealing is achieved by pressing the door panel assembly 1. Moreover, the sealing assembly 2 itself does not use a flexible structure like a conventional sealing ring, but is provided with a rigid retaining frame 22, and when replacing, the retaining frame 22 is subjected to corresponding disassembly and assembly operations.

[0036] In this setting method, firstly, since the object of the operation is a rigid structure, compared with the flexible structure of the sealing ring 21 itself, not only is the structure more regular, which is convenient for aligning the operation position, but it is also more sturdy and durable and will not be easily damaged. Therefore, even if remote operation equipment such as a manipulator is used, the replacement operation can be achieved; secondly, precisely because a manipulator can be used for replacement, there is no need for personnel to operate it personally, which avoids the adverse effects of the environment in which the sealed door is located on personnel, improves safety, and is more suitable for use in radioactive equipment rooms and hot rooms; more importantly, there is no need to operate the flexible sealing ring 21 itself during the operation (for example, putting the sealing ring 21 on the door panel, putting the sealing ring 21 on the edge of the door opening), so the sealing performance will not be affected by the operation accuracy problem, and the sealing is good and reliable.

[0037] It can be seen that the purpose of this embodiment is to provide an automatic sealing door with a remotely replaceable sealing ring. The automatic sealing door is safe and reliable, sturdy and durable, and the sealing ring is easy to replace. The sealing ring can be remotely replaced by a manipulator. When the sealing ring needs to be replaced, there is no need for staff to enter the hot chamber. The replacement of the sealing ring can be completed outside the hot chamber by controlling the manipulator.

[0038] In this embodiment, Figure 3 and Figure 4 As shown, the retainer 22 is a square frame structure, and any structure that is compatible with the door opening structure can also be used. In the retainer 22, sealing rings 21 are embedded on both end surfaces facing the door panel assembly 1 and the wall panel 3. The layout profile of the sealing ring 21 is consistent with the profile of the retainer 22, and both are square frame-shaped. The retainer 22 and the wall panel 3 are provided with a set relative activity margin along the pressing direction of the door panel assembly 1.

[0039] Since the sealing door flange 31 and the equipment room box (i.e., the wall panel 3) will deform during the welding process, the flatness of the flange 31 surface will be destroyed after the welding is completed, that is, the flatness of the surface to be butted and fitted by the sealing component 2 is difficult to ensure. For a large automatic sealing door with a length × width of about 1m × 1m, the deformation can even reach about 5mm. In order to achieve sealing performance, the rubber ring of the sealing ring retainer close to the inner box side needs to protrude about 6mm from the retainer surface. When the door panel presses the rubber ring on the retainer by a certain amount, the sealing door has a good sealing performance. In this embodiment, the door panel assembly 1 is pressed to achieve sealing, so a relative activity margin can be set in the pressing direction. This relative activity margin not only reduces the difficulty of disassembly and installation, and greatly reduces the accuracy requirements for the replacement operation, but also allows the sealing component 2 to move freely within a certain range, reducing unnecessary friction, and ensuring that the deformation of the butt surface is compensated by the elasticity of the sealing ring 21 to achieve strict sealing. The value of this relative activity margin can be selected according to the specific working conditions.

[0040] In this embodiment, the sealing assembly 2 further includes a support ear 23 and a clamping piece 24, both of which are arranged on the wallboard 3, and the retaining frame 22 is hung on the wallboard 3 through the support ear 23, and then clamped and fixed through the clamping piece 24. Compared with the conventional method of completely fixing with fasteners, this fixing method combining hanging and clamping reduces the complexity of operation, and does not require a manipulator to operate each fastening point in sequence. Moreover, when the retaining frame 22 is separated from the clamping piece 24, the support ear can still ensure the position of the retaining frame 22, so as to prevent the retaining frame 22 from falling off due to improper operation, thereby improving the safety of operation.

[0041] In this embodiment, Figure 5 As shown, the clamping member 24 includes a seat body 241, an elastic member 242 and a clamping pin 243. The seat body 241 is provided with a hole 245 perpendicular to the clamping direction of the door panel assembly 1. The clamping pin 243 is arranged in the hole 245 and is connected to the inner surface of the hole 245 through the elastic member 242 to enable the clamping pin 243 to be able to extend and retract at the end of the hole 245 toward the door opening. The clamping member 24 is provided with two groups and is symmetrically arranged on both sides of the door opening of the wall panel 3 so that the clamping pin 243 can extend and clamp the fixed retaining frame 22 under the support of the elastic member 242.

[0042] Specifically, the position between the two clamping pins 243 is used as the clamping position, and the end of the clamping pin 243 protruding from the hole 245 is a hemispherical end. Therefore, when the retainer 22 enters the clamping position of the clamping member 24 or leaves the clamping position, it can slide smoothly along the curved surface, so the clamping or separation of the retainer 22 can be achieved without the robot operating the clamping member 24 itself, further simplifying the complexity of the operation. When the retainer 22 is installed, the clamping pin 243 moves backward, and under the action of the spring, the clamping pin 243 generates a certain pressure on the retainer 22.

[0043] In this embodiment, the hole 245 is a stepped hole, and the stepped hole is divided into a first hole section 2451, a second hole section 2452 and a third hole section 2453 from one end facing the door opening to the other end. The apertures of the first hole section 2451 and the third hole section 2453 are both larger than the aperture of the second hole section 2452. The clamping member 24 also includes a screw 244, which is arranged in the third hole section 2453 and has an end diameter larger than the aperture of the second hole section 2452. The clamping pin 243 is in the shape of a stepped shaft and is arranged in the first hole section 2451. The diameter of the shaft section facing the door opening is larger than the diameter of the shaft section away from the door opening, and the small diameter shaft section passes through the second hole section 2452 and is threadedly connected to the screw 244. One end of the elastic member 242 is connected to the step surface between the large diameter shaft section and the small diameter shaft section in the clamping pin 243, and the other end is connected to the step surface between the first hole section 2451 and the second hole section 2452.

[0044] Specifically, the elastic member 242 is a spring, which is sleeved on the outside of the small diameter shaft section of the clamping pin 243. A threaded hole can be set at the end of the small diameter shaft section of the clamping pin 243. The setting of the screw 244 structure can not only effectively prevent the clamping pin 243 from escaping from the hole 245, but also adjust the clamping force. By adjusting the depth of the screw 244 screwed into the threaded hole, the length of the elastic member 242 without external force can be adjusted, thereby adjusting the clamping force.

[0045] In this embodiment, the ear 23 includes an ear seat and a pin. The ear seat is installed on the wall panel 3 and symmetrically arranged on both sides of the door opening of the wall panel 3. A groove is provided on the ear seat, and the groove is provided with an opening vertically upward, and the opening allows the pin to enter and exit. The pin is installed on both sides of the retaining frame 22. The retaining frame 22 moves vertically downward to allow the pin to be embedded in the groove of the ear seat, and then clamped and fixed by the clamping member 24. The groove width of the ear seat in the horizontal direction is greater than the diameter of the pin, so as to leave a relative margin of movement for the sealing component 2 and the wall panel 3. In this embodiment, the structure of the ear seat of the ear seat of the support ear 23 is roughly L-shaped. After being connected to the wall panel 3, it forms a groove with a top opening (or a groove with openings on the top and both sides) together with the wall panel 3. The pins on both sides of the retaining frame 22 enter the groove from the top opening of the ear seat. The structure of the ear 23 is relatively simple, so it is not specifically reflected in the drawings, and will not be described in detail here.

[0046] Specifically, the middle of the upper frame and the middle of the lower frame of the retainer 22 are provided with a groove concave in the vertical direction, and the bottom of the groove is provided with an anti-slip plate 221 for clamping by a robot. Two groups of lugs 23 and clamping pieces 24 are provided, and are symmetrically arranged on both sides of the door opening to connect the left frame and the right frame of the retainer 22. The lugs 23 are located above the clamping pieces 24, so that the retainer 22 can still be supported after it is separated from the clamping pieces 24.

[0047] When the sealing ring 21 needs to be replaced, the manipulator first clamps the anti-skid plate 221 in the middle of the bottom of the retaining frame 22, moves outward a certain distance to make the retaining frame 22 separate from the clamping member 24, and then the manipulator clamps the anti-skid plate 221 in the middle of the top of the retaining frame 22, moves upward a certain distance (to make the pin disengage from the groove opening of the ear seat) and then moves outward to complete the disassembly of the sealing assembly 2.

[0048] In this embodiment, the automatic sealing door also includes a transmission component 4. The door panel component 1 is arranged along a vertical plane parallel to the wall panel 3. The door panel component 1 is connected to the transmission component 4 and is lifted and lowered in the vertical direction under the drive of the transmission component 4. A hinge mechanism 13 is provided on the door panel component 1. After the door panel component 1 descends to contact the ground, the hinge mechanism 13 drives the door panel component 1 to move horizontally and press the sealing component 2 against the wall panel 3 to close the door. When the door panel component 1 rises, the door panel component 1 is driven to move horizontally to separate from the sealing component 2 to open the door.

[0049] Compared with the method of opening and closing the door by sliding it horizontally along the axis or rotating it in a fan-shaped area around a hinge axis, this door opening and closing structure reduces the space required for opening and closing the door, thereby reducing the space occupied in the equipment room and making it easier to layout the space in the equipment room.

[0050] In this embodiment, Figure 6 As shown, the door panel assembly 1 includes an inner door panel 11 and an outer door panel 12 which are arranged parallel to each other, the inner door panel 11 is arranged between the outer door panel 12 and the wall panel 3, and the hinge mechanism 13 includes a plurality of connecting rods 131, each connecting rod 131 is parallel to each other and has the same length, and both ends of each connecting rod 131 are connected to the inner door panel 11 and the outer door panel 12 in a hinged manner, so that the connecting rod 131, the inner door panel 11 and the outer door panel 12 form a movable parallelogram mechanism, and in this parallelogram mechanism, when the inner door panel 11 and the outer door panel 12 are in contact with the ground at the same time, the projection length of the connecting rod 131 in the horizontal direction is greater than the projection length of the connecting rod 131 in the horizontal direction when the door panel assembly 1 is lifted. In this embodiment, when the inner door panel 11 and the outer door panel 12 are in contact with the ground at the same time, the connecting rod 131 is in a horizontal state.

[0051] The outer door panel 12 is connected to the transmission component 4, so that when the inner door panel 11 is driven to descend by the transmission component 4, the inner door panel 11 is supported by the ground first, thereby driving the connecting rod 131 to rotate (reach a supported state) during the descent of the outer door panel 12, so that the width of the connecting rod 131 supported between the inner door panel 11 and the outer door panel 12 gradually increases, so that the inner door panel 11 moves horizontally on the ground to press the sealing component 2 against the wall panel 3 to achieve door closing; and, when the outer door panel 12 is pulled up by the transmission component 4, the outer door panel 12 is separated from the ground first, so that the connecting rod 131 rotates (reaches a convergent state) under the drag of the inner door panel 11, and the width of the connecting rod 131 supported between the inner door panel 11 and the outer door panel 12 gradually decreases, so that the inner door panel 11 moves horizontally on the ground to separate from the sealing component 2 to achieve door opening.

[0052] Specifically, a roller 111 is provided at the bottom of the inner door panel 11 to facilitate the movement of the inner door panel 11 when the connecting rod 131 is propped up or retracted, and a limit block 121 is provided at the bottom of the outer door panel 12 to ensure that when the inner door panel 11 and the outer door panel 12 contact the ground at the same time, the connecting rod 131 is in a horizontal state. In addition, when the control system of the automatic sealing door fails and the motor continues to run, the limit block 121 can limit the continued downward movement of the outer door panel 12 of the automatic sealing door, causing the motor to trigger overload protection and stop moving.

[0053] In this embodiment, Figure 7 As shown, the automatic sealing door further includes a guide rail assembly 5 , which is arranged on the wall panel 3 along the vertical direction, and the outer door panel 12 is connected to the guide rail assembly 5 to move in the vertical direction under the limitation of the guide rail assembly 5 .

[0054] The guide rail assembly 5 includes a guide rail pad 32, a guide rail mounting seat 51, and a linear guide rail 52. The pad 32 is connected to the wall panel 3 (or the box body), and the guide rail mounting seat 51 provides a high-precision mounting platform for the linear guide rail 52. The linear guide rail 52 is connected to the door panel assembly 1 to bear the force of the door panel assembly 1. The linear guide rail 52 includes a track body and a slide groove. The track body is connected to the guide rail mounting seat 51, and the slide groove is connected to the door panel assembly 1. The two are adapted to achieve relative sliding.

[0055] In this embodiment, Figure 8As shown, the transmission assembly 4 includes a motor 41 (or a servo motor), a lead screw 42 (using a trapezoidal lead screw), a connecting member 43 and a supporting member 44. The lead screw 42 is arranged in the vertical direction and is connected to the driving end of the motor 41. The connecting member 43 is sleeved on the lead screw 42 and is connected to the door panel assembly 1, so that when the motor 41 drives the lead screw 42 to rotate, the door panel assembly 1 is driven to rise and fall along the lead screw 42. The connecting member 43 uses a nut to sleeve the lead screw 42, so it can also be called a nut assembly. Support members 44 are provided at both ends of the movement stroke of the connecting member 43. The support member 44 at the lower end serves as a supporting side assembly, and the support member 44 at the upper end serves as a fixed side supporting assembly. The support member 44 is connected to the wall panel 3 (indirectly through the mounting bracket 6) to support the lead screw 42. The transmission assembly 4 also includes a coupling 45, the motor 41 is connected to the lead screw 42 through the coupling 45, the servo motor 41 is a power input device, the coupling 45 connects the servo motor and the trapezoidal lead screw, the support 44 is installed at both ends of the trapezoidal lead screw, and the connecting member 43 is connected to the door panel assembly 1. The trapezoidal lead screw has a self-locking function, which can keep the door panel assembly 1 at any position.

[0056] The automatic sealing door of this embodiment can also be provided with a mounting bracket 6, such as Fig. 9 As shown, the mounting bracket 6 includes a lower mounting plate 61, a side support plate 62, an upper mounting plate 63, and a motor mounting frame 64. The lower mounting plate 61, the upper mounting plate 63, and the two side support plates 62 form a square frame structure, the lower mounting plate 61 is used to mount the trapezoidal screw support side assembly, the upper mounting plate is used to mount the trapezoidal screw fixed side support assembly, and the motor mounting frame 64 is used to support the servo motor.

[0057] In this embodiment, the motor 41 is electrically connected to the switch control system of the automatic sealing door, and is used to start when the switch control system receives an opening or closing command, and output forward rotation or reverse rotation. A switch assembly 7 is provided at the position where the door panel assembly 1 completely presses the sealing assembly 2 and at the top of the rising stroke of the door panel assembly 1. When the door panel assembly 1 is closed or opened, the switch assembly 7 will be triggered, and the switch assembly 7 will stop the output of the motor 41 (by sending a signal to the switch control system to control the switch control system).

[0058] In this embodiment, a flange 31 is provided on the wall panel 3 at the edge of the door opening. When the door panel assembly 1 is closed, the sealing assembly 2 is pressed against the flange 31. The flange 31 provides a sealing plane for the sealed door. The flange 31 has certain requirements for flatness, strength, rigidity, etc. Compared with setting the wall panel 3 as a plane that meets the precision requirements, setting the plane of the flange 31 to a plane that meets the precision requirements is less costly. Each component installed on the wall panel 3 can be installed with a pad 32, which can not only adapt to the height of the flange 31, but also meet the plane precision requirements.

[0059] In general, the automatic sealing door with remotely replaceable sealing ring of this embodiment mainly includes flange 31, sealing ring holder (an integral module formed by sealing ring 21 and holder 22), door panel assembly 1, guide rail assembly 5, transmission assembly 4, limit block 121, mounting bracket 6, and switch assembly 7. The sealing ring 21 is installed on the holder 22. When the sealing ring 21 needs to be replaced, the entire sealing ring holder is replaced.

[0060] When the door panel assembly 1 is driven by the motor 41 to move downward, the sealing door is closed, and the sealing ring holder is driven to be compressed. When the door panel assembly 1 is closed, the sealing ring 21 is compressed and the sealing door is in a sealed state. On the contrary, when the door panel assembly 1 moves upward, the sealing door is opened. The door panel assembly 1 is fastened to the guide rail assembly 5 by screws, etc., so that the door panel moves up and down along the guide rail; the transmission assembly 4 provides power for the sealing door under the drive of the servo motor, and converts the rotational motion of the motor 41 into linear motion of the door panel. The mounting bracket 6 provides a mounting surface with a certain precision for the transmission assembly 4, and can also withstand the force applied to the transmission assembly 4.

[0061] The automatic sealing door of this embodiment is characterized in that:

[0062] (1) Realize automatic opening and closing of the hot chamber sealing door;

[0063] (2) The automatic sealing door has a self-locking function;

[0064] (3) The sealing ring of the sealing door can be replaced remotely by a robot;

[0065] (4) Automatic sealing door can meet the sealing requirements of high-sealing hot chambers.

[0066] Specifically, the flange 31, the sealing ring retainer pad 32, the guide rail assembly pad 32, and the mounting bracket pad 32 are welded to the inner box body (i.e., the wall panel 3) of the box chamber, and the door panel assembly 1, the guide rail assembly 5, the mounting bracket 6 and other components use the flange 31 as the installation reference.

[0067] The sealing ring holder is suspended on the outer side of the flange 31 and the inner side of the door panel assembly 1 through the support ear 23. As a movable component, the sealing ring holder can move back and forth in a short distance under the action of external force along the thickness direction of the flange.

[0068] The transmission assembly 4 is connected to the door panel assembly 1. When the sealed door needs to be closed, the transmission assembly 4 drives the door panel assembly 1 to move downward after receiving the command. After the door panel assembly 1 moves to the set position (that is, after the inner door panel 11 touches the ground), it starts to press the sealing ring retainer. After pressing in place, the door panel assembly 1 hits the switch assembly 7, and the transmission assembly 4 stops moving. On the contrary, when the sealed door needs to be opened, the transmission assembly 4 drives the door panel assembly 1 to move upward after receiving the command. After reaching the set position, the door panel assembly 1 hits the switch assembly 7, and the transmission assembly 4 stops moving.

[0069] The door panel assembly 1 needs to bear a certain reaction force when pressing the sealing ring retainer, so a guide rail assembly 5 is arranged on the door panel assembly 1, and the guide rail assembly 5 also has the function of guiding and preventing the door panel assembly 1 from rotating. The mounting bracket 6 provides a high-precision mounting platform for the transmission assembly 4. In order to meet the force requirements of the transmission assembly 4, the mounting bracket should have sufficient strength and rigidity.

[0070] When the sealing ring fails in a radioactive environment, the door panel assembly 1 is opened, and the manipulator in the chamber removes the old sealing ring retainer according to a set position and replaces it with a new sealing ring retainer.

[0071] The sealing ring retainer mainly includes a clamping device (clamping piece 24), a lug 23, a retainer 22, an anti-slip plate 221, and a sealing ring 21. The sealing ring 21 is arranged in the sealing grooves on both sides of the retainer 22, and an anti-slip plate 221 is arranged in the middle of the upper and lower parts of the retainer 22 for the convenience of the robot to clamp it. The lug 23 plays the role of supporting the retainer 22. The width of the groove on the lug 23 leaves a margin for the sealing ring retainer to move back and forth. In order to prevent the retainer 22 from shaking in a non-pressed state, a clamping device is arranged on both sides below the retainer 22. The clamping device is in rigid contact with the sealing ring retainer. When the sealing ring retainer moves, it only needs to overcome the pressure of the spring in the clamping device on the sealing ring retainer.

[0072] In the door panel assembly 1, the inner door panel 11 and the sealing ring holder together form a sealing barrier of the automatic sealing door, the outer door panel 12 is connected to the transmission assembly 4, and the outer door panel 12 and the inner door panel 11 are connected through the hinge assembly (i.e., the hinge mechanism 13). When the transmission assembly 4 drives the outer door panel 12 to move downward, the roller 111 below the inner door panel 11 is in place first, the inner door panel 11 stops moving downward, and the outer door panel 12 continues to move downward. The inner door panel 11 moves sideways under the drive of the hinge assembly to press the sealing ring holder. The roller 111 plays a role in supporting the inner door panel 11, and the limit block 121 is a protective block to prevent the outer door panel 12 from excessively moving downward.

[0073] Example 2

[0074] The radioactive equipment room of this embodiment includes an equipment room body and the automatic sealing door in Example 1. A door opening connecting the inside and outside of the equipment room body is opened on the wall panel 3 of the equipment room body. The automatic sealing door is installed on the wall panel 3 where the door opening is located in the equipment room body, and is used to open and close the door opening.

[0075] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic sealing door, characterized in that: The invention comprises a door panel assembly (1) and a sealing assembly (2), wherein the sealing assembly (2) is arranged between the door panel assembly (1) and a wall panel (3) where a door opening is located. The door panel assembly (1) is capable of pressing the sealing assembly (2) against the wall panel (3) to seal the gap between the door panel assembly (1) and the wall panel (3) while closing the door opening. The sealing assembly (2) comprises a sealing ring (21) and a retaining frame (22). The sealing ring (21) is embedded in the retaining frame (22), so that the sealing ring (21) and the retaining frame (22) form an integral module that can be disassembled, assembled and replaced together. The retaining frame (22) is a rigid frame structure and is detachably connected to the wallboard (3) so that the replacement of the entire module can be achieved by disassembling and assembling the rigid retaining frame (22).

2. The automatic sealing door according to claim 1, characterized in that: In the retaining frame (22), sealing rings (21) are embedded on both end surfaces facing the door panel assembly (1) and the wall panel (3). The retaining frame (22) and the wall panel (3) are provided with a set relative movable margin along the pressing direction of the door panel assembly (1).

3. The automatic sealing door according to claim 1, characterized in that: The sealing assembly (2) further comprises a support ear (23) and a clamping member (24). The support ears (23) and the clamping members (24) are both arranged on the wallboard (3). The retaining frame (22) is hung on the wallboard (3) via the support ears (23) and is clamped and fixed via the clamping pieces (24).

4. The automatic sealing door according to claim 3, characterized in that: The clamping member (24) comprises a seat body (241), an elastic member (242) and a clamping pin (243). The seat body (241) is provided with a hole (245) perpendicular to the pressing direction of the door panel assembly (1). The clamping pin (243) is disposed in the hole (245) and is connected to the inner surface of the hole (245) by a supporting elastic member (242), so that the clamping pin (243) can be extended and retracted at the end of the hole (245) toward the door opening. The clamping members (24) are provided in two groups and are symmetrically arranged on both sides of the door opening of the wall panel (3), so that the clamping pins (243) are extended and clamped to fix the retaining frame (22) under the support of the elastic member (242).

5. The automatic sealing door according to claim 4, characterized in that: The hole (245) is a stepped hole, and the stepped hole is divided into a first hole section (2451), a second hole section (2452) and a third hole section (2453) from one end facing the door opening to the other end, and the hole diameters of the first hole section (2451) and the third hole section (2453) are both larger than the hole diameter of the second hole section (2452). The clamping member (24) further comprises a screw (244), wherein the screw (244) is arranged in the third hole section (2453) and the diameter of the end of the screw (244) is larger than the diameter of the second hole section (2452). The clamping pin (243) is in the shape of a stepped shaft and is arranged in the first hole section (2451). The diameter of the shaft section facing the door opening is larger than the diameter of the shaft section away from the door opening. The shaft section with a smaller diameter passes through the second hole section (2452) and is threadedly connected to the screw (244). One end of the elastic member (242) is connected to the step surface between the large diameter shaft section and the small diameter shaft section in the clamping pin (243), and the other end is connected to the step surface between the first hole section (2451) and the second hole section (2452).

6. The automatic sealing door according to claim 3, characterized in that: The support ear (23) comprises an ear seat and a pin, The ear seat is mounted on the wall panel (3) and symmetrically arranged on both sides of the door opening of the wall panel (3). A groove is provided on the ear seat, and the groove is provided with a vertical opening upward, and the opening allows the pin to enter and exit. The pins are mounted on both sides of the retaining frame (22). The retaining frame (22) moves vertically downward so that the pin is embedded in the groove of the ear seat, and then clamped and fixed by the clamping piece (24).

7. The automatic sealing door according to claim 1, characterized in that: It also includes a transmission assembly (4), The door panel assembly (1) is arranged along a vertical plane parallel to the wall panel (3); the door panel assembly (1) is connected to the transmission assembly (4) and is lifted and lowered in a vertical direction under the drive of the transmission assembly (4); The door panel assembly (1) is provided with a hinge mechanism (13). When the door panel assembly (1) is lowered to contact the ground, the hinge mechanism (13) drives the door panel assembly (1) to move horizontally to press the sealing assembly (2) against the wall panel (3) to close the door. When the door panel assembly (1) is raised, the hinge mechanism (13) drives the door panel assembly (1) to move horizontally to separate from the sealing assembly (2) to open the door.

8. The automatic sealing door according to claim 7, characterized in that: The door panel assembly (1) comprises an inner door panel (11) and an outer door panel (12) which are arranged parallel to each other, wherein the inner door panel (11) is arranged between the outer door panel (12) and the wall panel (3). The hinge mechanism (13) comprises a plurality of connecting rods (131), each connecting rod (131) is parallel to each other and has the same length, and both ends of each connecting rod (131) are connected to the inner door panel (11) and the outer door panel (12) in a hinged manner, so that the connecting rods (131), the inner door panel (11) and the outer door panel (12) form a movable parallelogram mechanism. The outer door panel (12) is connected to the transmission assembly (4), so that when the inner door panel (11) is driven to descend by the transmission assembly (4), the inner door panel (11) is first supported by the ground, thereby driving the connecting rod (131) to rotate during the descent of the outer door panel (12), so that the width of the connecting rod (131) between the inner door panel (11) and the outer door panel (12) is gradually increased, so that the inner door panel (11) moves horizontally on the ground to press the sealing assembly (2) against the wall panel (3) to achieve door closing; and, When being pulled upward by the transmission assembly (4), the outer door panel (12) is first separated from the ground, so that the connecting rod (131) rotates under the drag of the inner door panel (11), and the width of the connecting rod (131) between the inner door panel (11) and the outer door panel (12) is gradually reduced, so that the inner door panel (11) moves horizontally on the ground and separates from the sealing assembly (2) to realize door opening.

9. The automatic sealing door according to claim 8, characterized in that: It also includes a guide rail assembly (5), wherein the guide rail assembly (5) is arranged on the wall panel (3) in a vertical direction. The outer door panel (12) is connected to the guide rail assembly (5) so as to move in a vertical direction under the limit of the guide rail assembly (5).

10. The automatic sealing door according to claim 7, characterized in that: The transmission assembly (4) comprises a motor (41), a lead screw (42), a connecting member (43) and a supporting member (44). The lead screw (42) is arranged in a vertical direction and connected to a driving end of the motor (41). The connecting member (43) is sleeved on the lead screw (42) and connected to the door panel assembly (1) so as to drive the door panel assembly (1) to rise and fall along the lead screw (42) when the motor (41) drives the lead screw (42) to rotate. Support members (44) are provided at both ends of the movement stroke of the connecting member (43). The support member (44) is connected to the wall panel (3) to support the lead screw (42).

11. A radioactive equipment room, characterized in that: It comprises an equipment room body and an automatic sealing door as claimed in any one of claims 1 to 10, A door opening is provided on the wall panel (3) of the equipment room body, which is connected to the inside and outside of the equipment room body. The automatic sealing door is installed on a wall panel (3) where a door opening is located in the equipment room body, and is used to open and close the door opening.

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