Air tightness detection device and detection method for lead-protected electric door

Abstract

The present invention belongs to the technical field of air tightness detection, and in particular, relates to an air tightness detection device and detection method for a lead-protected electric door, comprising a frame plate, the frame plate being installed inside a door frame, the side wall of the frame plate close to the door leaf side being provided with a frame-type installation groove, the frame-type installation groove being provided with a frame-type movable plate inside, the side wall of the frame-type movable plate close to the door leaf side being provided with a frame-type air groove, the frame-type air groove being provided with a plurality of evenly distributed sealing partitions inside. The present invention utilizes the direction of airflow to accurately indicate the leakage point between the lead-protected door and the door frame, is simple and intuitive, and can automatically perform air tightness detection during the use of the lead-protected door based on the number of times the lead-protected door is started, and remind personnel to perform maintenance on the lead-protected door, and at the same time, can remind personnel to stay away from the lead-protected door by touch, thereby indirectly improving the protective effect of the lead-protected door.

Description

Technical Field

[0001] The invention belongs to the technical field of air tightness detection, and in particular relates to an air tightness detection device and a detection method for a lead-protected electric door. Background Art

[0002] Radiation protection is of vital importance in the fields of medical treatment, scientific research and industry. Lead protective doors, as commonly used radiation protection equipment, are widely used in places such as X-ray rooms. Airtightness testing is very critical for lead protective doors. It can promptly detect the poor sealing of lead protective doors to prevent the radiation shielding effect from deteriorating due to poor sealing of lead protective doors.

[0003] At present, when testing the sealing performance of door leaves, fluid is usually used to test the air tightness of the gap between the door leaf and the door frame. By comparing the pressure difference before and after the fluid enters, it is possible to quickly test whether the air tightness of the door leaf is qualified, such as the civil air defense door leaf sealing performance testing device and testing method disclosed in patent publication number CN109141777B;

[0004] Although the device disclosed in the above patent can perform airtightness detection on door leaves and can quickly locate the position of poor airtightness, it can only perform airtightness detection during the production process and needs to use consumables such as toner, which increases the detection cost. The toner recovery is relatively difficult and requires special cleaning. At the same time, in actual work of the lead protection door, a sealing strip that can be filled with fluid will be set at the door frame (used to maintain the sealing between the door frame and the door leaf after the lead protection door is closed). During the frequent entry and exit of fluid and the increase in usage time, the sealing strip may age and affect the sealing of the lead protection door. The method of only performing detection during production cannot timely detect the phenomenon that the lead protection door may have poor airtightness in actual use. Summary of the invention

[0005] The purpose of the present invention is to provide an air tightness detection device and a detection method for a lead-protected electric door in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an air tightness detection device for a lead-protected electric door, comprising a frame plate, the frame plate is installed inside the door frame, the side wall of the frame plate close to the door leaf is provided with a frame-type installation groove, the frame-type installation groove is provided with a frame-type movable plate, the side wall of the frame-type movable plate close to the door leaf is provided with a frame-type air groove, the frame-type air groove is provided with a plurality of evenly distributed sealing baffles, each of the end faces of the sealing baffles is provided with a forward air vent and a reverse air vent, and the forward air vent and the reverse air vent are both provided with a one-way valve, each of the sealing baffles Ventilation detection mechanisms corresponding to the positions of forward air holes and reverse air holes are installed at both upper and lower ends, an indication component electrically connected to the ventilation detection mechanism is provided on the side wall of the frame plate away from the door leaf, a driving sealing component is installed together with the frame-type movable plate and the frame-type mounting groove, a plurality of exhaust holes are provided on the groove wall of the frame-type air groove near the contact position between the door frame and the door leaf, an air supply mechanism connected to the frame-type air groove is installed on the top of the frame plate, and a leakage starting component is installed inside the air supply mechanism, a control main board is provided inside the air supply mechanism, and a counting starting mechanism is installed together inside the frame plate and the air supply mechanism.

[0007] Preferably, each of the ventilation detection mechanisms includes an elastic diaphragm arranged on the end face of the sealing baffle, and the elastic diaphragm is arranged at the air outlet end of the one-way valve on the same side. A pressure strip is provided on the upper side of the elastic diaphragm, and the pressure strip is detachably connected to the sealing baffle. Lamp beads are fixedly installed on one end of the inside of the forward air vent and the reverse air vent away from the pressure strip on the same side, and a mounting block corresponding to the position of the lamp bead on the same side is fixedly installed on the end face of the sealing baffle, and a photoelectric switch is fixedly installed on the side wall of the mounting block close to the lamp bead, and the lamp bead and the photoelectric switch are both electrically connected to the control main board.

[0008] Preferably, the indication component includes a plurality of grooves opened on the side wall of the frame plate away from the door leaf, and two direction indicator light strips are fixedly installed inside each groove, and the indication directions of the two direction indicator light strips on the same side are opposite, and the notches of each groove are fixedly encapsulated with a transparent plate, and each photoelectric switch is electrically connected to the corresponding direction indicator light strip through the control main board, a voice prompter is provided above the frame plate, and the photoelectric switch is electrically connected to the voice prompter through the control main board.

[0009] Preferably, the drive sealing assembly includes four circular grooves opened at the bottom of the frame-type mounting groove, and the four circular grooves are respectively arranged at the four corners of the frame-type mounting groove, an electric push rod is fixedly installed inside each of the circular grooves, the telescopic ends of the electric push rods are fixedly connected to the frame-type movable plate, the side wall of the frame-type movable plate close to the door leaf side and the side wall of each sealing partition close to the door leaf side are jointly fixedly connected with a sealing gasket, the inner and outer side walls of the frame-type mounting groove are fixedly installed with frame-type rubber pads, the inner and outer side walls of the frame-type movable plate are in sliding contact with the side wall of the frame-type rubber pad on the same side, and the four electric push rods are electrically connected to the control main board.

[0010] Preferably, the air supply mechanism includes a hollow plate fixedly mounted on the top of the frame plate, an air pump is fixedly mounted on the side wall of the hollow plate away from the door leaf, and the air outlet end of the air pump is connected to the interior of the hollow plate, a frame-shaped air cavity is provided inside the frame plate, an air supply pipe is fixedly connected to the frame-shaped air cavity and the hollow plate, and a normally closed solenoid valve is installed inside the air supply pipe, a plurality of connecting holes are provided on the cavity wall of the frame-shaped air cavity and the bottom of the frame-shaped mounting groove, a plurality of conical holes are provided on the bottom of the frame-shaped air groove, and the aperture of the air inlet end of each conical hole is larger than the aperture of the air outlet end, the air pump and the normally closed solenoid valve are electrically connected to the control main board, and the voice prompter is fixedly plugged into the side wall of the hollow plate.

[0011] Preferably, the leakage starting assembly includes an insulating sleeve fixedly mounted inside a frame-shaped air cavity, a piston being slidably disposed inside the insulating sleeve, and an insulating rod being fixedly mounted on the side wall of the piston, a conductive column being fixedly mounted on the end of the insulating rod away from the piston, a conductive ring matching the conductive column being fixedly mounted on the inner wall of the insulating sleeve, the conductive ring being in sliding contact with the side wall of the conductive column, a spring being fixedly mounted between the piston and the inner wall of the insulating sleeve, and each of the photoelectric switches being electrically connected to a voice prompter and a corresponding direction indicator light bar through a control mainboard, a conductive column and a conductive ring.

[0012] Preferably, the counting start mechanism includes a columnar groove opened on the side wall of the frame plate close to the door leaf, and a proximity switch is fixedly installed at the bottom of the columnar groove, an electromagnetic switch electrically connected to the proximity switch is fixedly installed inside the hollow plate, a first counter is fixedly installed inside the hollow plate, and the electromagnetic switch is electrically connected to the first counter, the first counter is electrically connected to the control main board, and the proximity switch is electrically connected to the air pump.

[0013] Preferably, a hollow bar is provided on one side of the hollow plate, and a plurality of air injection holes are opened at the bottom of the hollow bar, and two connecting pipes are fixedly plugged into the hollow bar and the hollow plate, and normally open solenoid valves are installed inside the two connecting pipes.

[0014] Preferably, a second counter is fixedly installed inside the hollow plate, the electromagnetic switch is electrically connected to the second counter, and the second counter is electrically connected to the voice prompter through the control mainboard.

[0015] A detection method for an air tightness detection device of a lead-protected electric door, the detection method comprising the following steps:

[0016] S1. Weld the frame plate to the inside of the door frame, and install the hollow plate on the indoor wall of the radiation room. It is necessary to drill holes in the wall and pass two connecting pipes through the holes. Then install the hollow bar on the outer wall of the radiation room, so that the hollow bar is located above the door leaf of the lead-protected electric door, and the hollow bar is connected to the two connecting pipes. Finally, connect the control main board to the external circuit;

[0017] S2. When the door leaf of the lead protection electric door is closed, the counting start mechanism will count the number of times the door leaf of the lead protection electric door is closed, and output a start electrical signal to the control main board after reaching a certain number of times;

[0018] S3, after the control main board receives the electrical signal from the counting start mechanism, it will control the driving sealing component to work regularly, so that the sealing gasket on the frame movable plate will abut against the door leaf;

[0019] S4, the control mainboard controls the air supply mechanism to work and delivers a fixed amount of air to the inside of the frame-shaped air slot, so that the connection circuit between the leakage start component and the control mainboard is disconnected;

[0020] S5. After the control mainboard receives the connection electrical signal from the leakage start component, the control mainboard starts the voice prompter and controls the indication component to work. The staff determines the location of the leakage point according to the directions indicated by the direction indicator light bars on the indication component.

[0021] Compared with the existing technology, the advantages of an air tightness detection device and a detection method for a lead-protected electric door are:

[0022] 1. Through the cooperation of the set frame plate, frame-type mounting groove, frame-type movable plate, frame-type air groove, sealing partition, forward vent, reverse vent, one-way valve, exhaust hole, air supply mechanism, leakage start component, control main board, ventilation detection mechanism and indication component, the leakage point between the lead protection door and the door frame can be accurately indicated by inflation and utilizing the direction of airflow. It is simple and intuitive, has good use effect and does not require the use of consumables.

[0023] 2. Through the setting of the counting start mechanism, the airtightness test of the lead protection door can be automatically controlled based on the number of times the lead protection door is opened and closed, and the airtightness test can be performed during the use of the lead protection door without the participation of personnel. The use is highly automated, and in conjunction with the second counter set, it can automatically remind personnel to perform maintenance on the lead protection door based on the number of times the lead protection door is opened and closed.

[0024] 3. Through the cooperation of the hollow strips, air jet holes, connecting pipes and normally open solenoid valves, an air film can be formed on the outside of the door leaf of the lead protection door after the lead protection door is closed. This can remind people not to touch the lead protection door by touch, thereby helping to improve the protective effect of the lead protection door. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an air tightness detection device and a detection method for a lead-protected electric door provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the connection structure of a frame plate, a door leaf and a door frame of an air tightness detection device and a detection method for a lead-protected electric door provided by the present invention;

[0027] Figure 3 The invention provides an air tightness detection device and a detection method for a lead-protected electric door. Figure 2 A magnified view of the structure of part A;

[0028] Figure 4 It is a side structural schematic diagram of a sealing partition of an air tightness detection device and detection method for a lead-protected electric door provided by the present invention;

[0029] Figure 5 It is a schematic diagram of the back structure of a frame plate of an air tightness detection device and detection method for a lead-protected electric door provided by the present invention;

[0030] Figure 6 It is a schematic diagram of the internal structure of a hollow plate in a top view of an air tightness detection device and a detection method for a lead-protected electric door provided by the present invention;

[0031] Figure 7 The invention provides an air tightness detection device and a detection method for a lead-protected electric door. Figure 2 A magnified view of the structure of part B;

[0032] Figure 8 It is a front view structural schematic diagram of a frame-type air groove of an air tightness detection device and detection method for a lead-protected electric door provided by the present invention.

[0033] In the figure: 1 frame plate, 2 door frame, 3 door leaf, 4 frame type installation groove, 5 frame type movable plate, 6 frame type air groove, 7 sealing partition, 8 forward vent, 9 reverse vent, 10 one-way valve, 11 ventilation detection mechanism, 111 elastic diaphragm, 112 pressure strip, 113 lamp bead, 114 mounting block, 115 photoelectric switch, 12 indication component, 121 groove, 122 direction indicator light bar, 123 transparent plate, 124 voice prompter, 13 driving sealing component, 131 round groove, 132 electric push rod, 133 sealing pad, 134 frame type rubber pad, 14 exhaust hole, 15 air supply mechanism, 151 hollow plate, 152 air pump, 153 frame-type air cavity, 154 air supply pipe, 155 normally closed solenoid valve, 156 connecting hole, 157 tapered hole, 16 leakage start component, 161 insulating sleeve, 162 piston, 163 insulating rod, 164 conductive column, 165 conductive ring, 166 spring, 17 control main board, 18 counting start mechanism, 181 column groove, 182 proximity switch, 183 electromagnetic switch, 184 first counter, 19 hollow bar, 20 air injection hole, 21 connecting pipe, 22 normally open solenoid valve, 23 second counter. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] like Figure 1-Figure 8As shown, an air tightness detection device for a lead-protected electric door comprises a frame plate 1, the frame plate 1 is mounted inside a door frame 2, a frame-type mounting groove 4 is provided on the side wall of the frame plate 1 close to the door leaf 3, a frame-type movable plate 5 is provided inside the frame-type mounting groove 4, a frame-type movable plate 5 is provided on the side wall close to the door leaf 3, a frame-type air groove 6 is provided inside the frame-type air groove 6, a plurality of evenly distributed sealing partitions 7 are provided inside, a forward air vent 8 and a reverse air vent 9 are provided on the end face of each sealing partition 7, and a check valve 10 is installed inside the forward air vent 8 and the reverse air vent 9, a ventilation detection mechanism 11 corresponding to the position of the forward air vent 8 and the reverse air vent 9 is installed on the upper and lower ends of each sealing partition 7, and each ventilation detection mechanism 11 comprises an elastic membrane arranged on the end face of the sealing partition 7 The elastic diaphragm 111 is arranged at the air outlet end of the one-way valve 10 on the same side, a pressure strip 112 is arranged on the upper side of the elastic diaphragm 111, and the pressure strip 112 is detachably connected to the sealing baffle 7, and a lamp bead 113 is fixedly installed on the end of the inner part of the forward air vent 8 and the reverse air vent 9 away from the pressure strip 112 on the same side, and a mounting block 114 corresponding to the position of the lamp bead 113 on the same side is fixedly installed on the end surface of the sealing baffle 7, and a photoelectric switch 115 is fixedly installed on the side wall of the mounting block 114 close to the lamp bead 113. The lamp bead 113 and the photoelectric switch 115 are both electrically connected to the control main board 17. After receiving the light signal emitted by the lamp bead 113, the photoelectric switch 115 can convert the light signal into an electrical signal and output it to the control main board 17. This is an existing mature technology, so it will not be elaborated here.

[0036] An indication component 12 electrically connected to the ventilation detection mechanism 11 is provided on the side wall of the frame plate 1 away from the door leaf 3. The indication component 12 includes a plurality of grooves 121 opened on the side wall of the frame plate 1 away from the door leaf 3, and two direction indicator light strips 122 are fixedly installed inside each groove 121, and the indication directions of the two direction indicator light strips 122 on the same side are opposite, and the notches of each groove 121 are fixedly encapsulated with a transparent plate 123, and each photoelectric switch 115 is electrically connected to the corresponding direction indicator light strip 122 through the control main board 17, a voice prompter 124 is provided above the frame plate 1, and the photoelectric switch 115 is electrically connected to the voice prompter 124 through the control main board 17, and the direction indicator light strip 122 is in the shape of an "arrow" to facilitate direction indication.

[0037] The frame-type movable plate 5 and the frame-type mounting groove 4 are jointly equipped with a driving seal assembly 13, and a plurality of exhaust holes 14 are provided on the groove wall of the frame-type air groove 6 near the contact position between the door frame 2 and the door leaf 3. The driving seal assembly 13 includes four circular grooves 131 provided at the bottom of the frame-type mounting groove 4, and the four circular grooves 131 are respectively arranged at the four corners of the frame-type mounting groove 4, and an electric push rod 132 is fixedly installed inside each circular groove 131, and the telescopic ends of the electric push rod 132 are fixedly connected to the frame-type movable plate 5, and the frame-type The side wall of the movable plate 5 close to the door leaf 3 and the side walls of each sealing partition 7 close to the door leaf 3 are fixedly connected with a sealing gasket 133, and the inner and outer side walls of the frame-type mounting groove 4 are fixedly installed with frame-type rubber pads 134. The inner and outer side walls of the frame-type movable plate 5 are in sliding contact with the side walls of the frame-type rubber pad 134 on the same side. The four electric push rods 132 are electrically connected to the control main board 17. Under the action of the frame-type rubber pad 134, the sealing between the frame-type movable plate 5 and the frame-type mounting groove 4 can be ensured.

[0038] The top of the frame plate 1 is provided with an air supply mechanism 15 connected with the frame-shaped air groove 6. The air supply mechanism 15 includes a hollow plate 151 fixedly installed on the top of the frame plate 1. An air pump 152 is fixedly installed on the side wall of the hollow plate 151 away from the door leaf 3, and the air outlet end of the air pump 152 is connected with the inside of the hollow plate 151. A frame-shaped air cavity 153 is provided inside the frame plate 1. The frame-shaped air cavity 153 and the hollow plate 151 are fixedly connected with an air supply pipe 154, and a normally closed solenoid valve 155 is installed inside the air supply pipe 154. The cavity wall of the frame-shaped air cavity 153 is connected with the frame-shaped mounting. The bottom of the groove 4 is jointly provided with a plurality of connecting holes 156, the bottom of the frame-type air groove 6 is provided with a plurality of conical holes 157, and the aperture of the air inlet end of each conical hole 157 is larger than the aperture of the air outlet end, the air pump 152 and the normally closed solenoid valve 155 are electrically connected to the control main board 17, and the voice prompter 124 is fixedly plugged into the side wall of the hollow plate 151. The design of the conical holes 157 can prevent the air between the sealing partitions 7 from flowing backward through the conical holes 157 in case of leakage, thereby ensuring that most of the air flows through the forward vents 8 and the reverse vents 9.

[0039] A leakage start component 16 is installed inside the air supply mechanism 15. The leakage start component 16 includes an insulating sleeve 161 fixedly installed inside the frame-shaped air cavity 153. A piston 162 is slidably provided inside the insulating sleeve 161, and an insulating rod 163 is fixedly installed on the side wall of the piston 162. A conductive column 164 is fixedly installed on the end of the insulating rod 163 away from the piston 162. A conductive ring 165 matching the conductive column 164 is fixedly installed on the inner wall of the insulating sleeve 161. The conductive ring 165 is in sliding contact with the side wall of the conductive column 164. A spring 166 is fixedly provided between the piston 162 and the inner wall of the insulating sleeve 161. Each photoelectric switch 115 is electrically connected to the voice prompter 124 and the corresponding direction indicator light bar 122 through the control main board 17, the conductive column 164 and the conductive ring 165. When the controller starts the normally closed solenoid valve 155, the connection circuit between the conductive housing 164, the conductive ring 165 and the control main board 17 is not energized.

[0040] A control main board 17 is provided inside the air supply mechanism 15, and a counting start mechanism 18 is installed inside the frame plate 1 and the air supply mechanism 15. The counting start mechanism 18 includes a columnar groove 181 opened on the side wall of the frame plate 1 close to the door leaf 3 of the lead protection door, and a proximity switch 182 is fixedly installed at the bottom of the columnar groove 181. An electromagnetic switch 183 electrically connected to the proximity switch 182 is fixedly installed inside the hollow plate 151. A first counter 184 is fixedly installed inside the hollow plate 151, and the electromagnetic switch 183 is electrically connected to the first counter 184. The first counter 184 is electrically connected to the control main board 17, and the proximity switch 182 is electrically connected to the air pump 152. The proximity switch 182 can detect the approach of the door leaf 3 of the lead protection door, and output an electrical signal to the control main board 17 after the door leaf 3 of the lead protection door approaches. This is an existing mature technology, so it will not be elaborated on here.

[0041] A hollow strip 19 is provided on one side of the hollow plate 151, and a plurality of jet holes 20 are opened at the bottom of the hollow strip 19. Two connecting pipes 21 are fixedly connected to the hollow strip 19 and the hollow plate 151, and normally open solenoid valves 22 are installed inside the two connecting pipes 21. The airflow ejected through the jet holes 20 can form an air film on the surface of the door leaf 3 of the lead protective door, thereby reminding passers-by to stay away from the door leaf 3 of the lead protective door.

[0042] A second counter 23 is fixedly installed inside the hollow plate 151, and the electromagnetic switch 183 is electrically connected to the second counter 23. The second counter 23 is electrically connected to the voice prompter 124 through the control main board 17. The first counter 184 and the second counter 23 both increase their own counting information by receiving electrical signals, and output electrical signals to the control main board 17 after the count reaches a set value. This is an existing mature technology, so it will not be elaborated here.

[0043] The operating principle of the present invention is now described as follows: the frame plate 1 is welded to the inside of the door frame 2, and the hollow plate 151 is installed on the indoor wall of the radiation room, and holes need to be drilled in the wall, and two connecting pipes 21 are passed through the holes, and then the hollow bar 19 is installed on the outer wall of the radiation room, so that the hollow bar 19 is located above the door leaf 3 of the lead protection door, and the hollow bar 19 is connected to the two connecting pipes 21, and finally the control main board 17 is connected to the external circuit;

[0044] When the door leaf 3 of the lead protection door is closed, the proximity switch 182 will detect that the lead protection door is closed, and at this time the proximity switch 182 will output an electrical signal to the electromagnetic switch 183, and the moving contact of the electromagnetic switch 183 will immediately close by magnetic attraction, thereby outputting an electrical signal to the first counter 184. After receiving the closing electrical signal of the electromagnetic switch 183, the first counter 184 will immediately increase the count by "1". When the count of the first counter 184 reaches the set value (for example, 20 times), the first counter 184 will output a start electrical signal to the control main board 17, and at this time the control main board 17 will immediately start an airtightness detection work;

[0045] The control main board 17 controls the four electric push rods 132 to perform timed output work. At this time, the frame-type movable plate 5 moves toward the door leaf 3 of the lead protection door, so that the sealing gasket 133 on the frame-type movable plate 5 abuts against the side wall of the door leaf 3 of the lead protection door. Then, the control main board 17 controls the air pump 152, the normally closed solenoid valve 155 and the two normally open solenoid valves 22 to work regularly for 1 minute. At this time, the air pump 152 delivers air to the inside of the hollow plate 151, and the air enters the frame-type air cavity 153 through the air supply pipe 154, and then enters the frame-type air groove 6 through each connecting hole 156 and the tapered hole 157, so that the frame-type air groove 6, the air pressure inside increases, when the air pressure increases, the piston 162 is pushed to move, at this time, the piston 162 moves away from the conductive ring 165 through the insulating rod 163 and the conductive column 164, if there is a leakage point between the door leaf 3 and the door frame 2 of the lead protection door, the high-pressure air inside the frame-type air groove 6 will escape, at this time, the air pressure inside the frame-type air groove 6 decreases, under the action of the spring 166, the piston 162 starts to drive the insulating rod 163 to move back, until the conductive column 164 contacts the conductive ring 165, the connection circuit between the conductive column 164, the conductive ring 165 and the control main board 17 is reconnected, at this time, the control main board 17 will immediately That is, the voice prompter 124 is controlled to work, and at the same time, the connection circuits of each direction indicator light strip 122 and the photoelectric switch 115 are connected. Since there is a leakage point between the door leaf 3 and the door frame 2 of the lead protection door, negative pressure is generated at the leakage point, and the high-pressure air inside the frame-type air groove 6 will flow to the low-pressure area. Since there is a one-way valve 10 inside the forward air vent 8 and the reverse air vent 9 on each sealing partition 7, the airflow flowing to the leakage point will only flow along the forward air vent 8 or the reverse air vent 9 (the aperture of the outlet end of the conical hole 157 at the bottom of the frame-type air groove 6 is small, and the amount of airflow that can enter through this place is low), and at the pressure point, the airflow will not flow along the forward air vent 8 or the reverse air vent 9. Under the action of the difference, the corresponding elastic diaphragm 111 will be blown up a certain distance, so that the lamp bead 113 inside the forward vent hole 8 or the reverse vent hole is exposed, and the photoelectric switch 115 on the same side will receive the light signal, and the photoelectric switch 115 will then output an electrical signal to the control mainboard 17, and the control mainboard 17 will immediately control the direction indicator light bar 122 corresponding to the photoelectric switch 115 to light up. Therefore, the direction indicated by each lit direction indicator light can be used to know the direction of the airflow, and the intersection area of ​​the two airflow directions is the location of the leakage point, so that personnel can intuitively and quickly determine the location of the leakage point;

[0046] Each time the proximity switch 182 detects that the door leaf 3 of the lead protection door is closed, the proximity switch 182 will output an electrical signal to the control mainboard 17, and the control mainboard 17 will control the air pump 152 to work. At this time, the air delivered by the air pump 152 will enter the hollow bar 19 through the connecting pipe 21, and be ejected through each jet hole 20, so that a layer of air film can be formed on the surface of the door leaf 3 of the lead protection door. When passing by the lead protection door, the passerby will feel the flow of air, so that the passerby can be reminded to stay away from the lead protection door as much as possible, thereby helping to improve the protective effect of the door leaf 3 of the lead protection door;

[0047] Secondly, each time the electromagnetic switch 183 is closed, it will output an electrical signal to the second counter 23, and the count of the second counter 23 will be increased by "1". After the count of the second counter 23 reaches the set value (the set value can be set by the staff, such as 50 times), the second counter 23 will output an electrical signal to the control motherboard 17, and the control motherboard 17 will immediately remind the relevant personnel through the voice prompter 124 (the prompt voice of the voice prompter 124 is different from the voice prompt sound of the door leaf 3 of the lead protection door when a leakage point occurs) to perform maintenance on the door leaf 3 and the door frame 2 of the lead protection door (such as removing impurities inside the slide rail, etc.).

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air tightness detection device for a lead-protected electric door, comprising a frame plate (1), characterized in that: The frame plate (1) is installed inside the door frame (2); a frame-shaped installation groove (4) is provided on the side wall of the frame plate (1) close to the door leaf (3); a frame-shaped movable plate (5) is provided inside the frame-shaped installation groove (4); a frame-shaped air groove (6) is provided on the side wall of the frame-shaped movable plate (5) close to the door leaf (3); a plurality of evenly distributed sealing partitions (7) are provided inside the frame-shaped air groove (6); a forward vent hole (8) and a reverse vent hole (9) are provided on the end surface of each of the sealing partitions (7); and a check valve (10) is installed inside the forward vent hole (8) and the reverse vent hole (9); and a check valve (10) corresponding to the position of the forward vent hole (8) and the reverse vent hole (9) is installed at the upper and lower ends of each of the sealing partitions (7). A gas detection mechanism (11), a side wall of the frame plate (1) away from the door leaf (3) is provided with an indication component (12) electrically connected to the ventilation detection mechanism (11), the frame-type movable plate (5) and the frame-type mounting groove (4) are jointly provided with a driving sealing component (13), a groove wall of the frame-type gas groove (6) close to the contact position between the door frame (2) and the door leaf (3) is provided with a plurality of exhaust holes (14), a gas supply mechanism (15) connected to the frame-type gas groove (6) is installed on the top of the frame plate (1), and a leakage start component (16) is installed inside the gas supply mechanism (15), a control main board (17) is arranged inside the gas supply mechanism (15), and a counting start mechanism (18) is jointly installed inside the frame plate (1) and the gas supply mechanism (15); Each of the ventilation detection mechanisms (11) comprises an elastic diaphragm (111) arranged on the end surface of the sealing baffle (7), the elastic diaphragm (111) being arranged at the air outlet end of the one-way valve (10) on the same side, a pressure strip (112) being arranged on the upper side of the elastic diaphragm (111), and the pressure strip (112) being detachably connected to the sealing baffle (7), a lamp bead (113) being fixedly mounted on one end of the inside of the forward vent (8) and the reverse vent (9) away from the pressure strip (112) on the same side, a mounting block (114) corresponding to the position of the lamp bead (113) on the same side being fixedly mounted on the end surface of the sealing baffle (7), and a photoelectric switch (115) being fixedly mounted on the side wall of the mounting block (114) close to the lamp bead (113), and both the lamp bead (113) and the photoelectric switch (115) being electrically connected to the control mainboard (17); The indicating assembly (12) comprises a plurality of grooves (121) formed on a side wall of the frame plate (1) away from the door leaf (3), and two direction indicator light bars (122) are fixedly mounted inside each groove (121), and the indicating directions of the two direction indicator light bars (122) on the same side are opposite, and the notches of each groove (121) are fixedly encapsulated with a transparent plate (123), and each photoelectric switch (115) is electrically connected to the corresponding direction indicator light bar (122) via a control mainboard (17), and a voice prompter (124) is provided above the frame plate (1), and the photoelectric switch (115) is electrically connected to the voice prompter (124) via the control mainboard (17); The driving seal assembly (13) comprises four circular grooves (131) formed at the bottom of the frame-type mounting groove (4), and the four circular grooves (131) are respectively arranged at the four corners of the frame-type mounting groove (4), and an electric push rod (132) is fixedly installed inside each of the circular grooves (131), and the telescopic ends of the electric push rods (132) are fixedly connected to the frame-type movable plate (5), and the side wall of the frame-type movable plate (5) close to the door leaf (3) and the side wall of each sealing partition (7) close to the door leaf (3) are fixedly connected to a sealing gasket (133), and the inner and outer side walls of the frame-type mounting groove (4) are fixedly installed with a frame-type rubber pad (134), and the inner and outer side walls of the frame-type movable plate (5) are in sliding contact with the side wall of the frame-type rubber pad (134) on the same side, and the four electric push rods (132) are electrically connected to the control main board (17); The air supply mechanism (15) comprises a hollow plate (151) fixedly mounted on the top of the frame plate (1); an air pump (152) is fixedly mounted on a side wall of the hollow plate (151) away from the door leaf (3); an air outlet of the air pump (152) is connected to the interior of the hollow plate (151); a frame-shaped air cavity (153) is provided inside the frame plate (1); an air supply pipe (154) is fixedly connected to the frame-shaped air cavity (153) and the hollow plate (151); and the interior of the air supply pipe (154) is installed A normally closed solenoid valve (155) is provided, a cavity wall of the frame-shaped air cavity (153) and a groove bottom of the frame-shaped mounting groove (4) are provided with a plurality of connecting holes (156), a groove bottom of the frame-shaped air groove (6) is provided with a plurality of conical holes (157), and the aperture of the air inlet end of each conical hole (157) is larger than the aperture of the air outlet end, the air pump (152) and the normally closed solenoid valve (155) are electrically connected to the control main board (17), and the voice prompter (124) is fixedly plugged into the side wall of the hollow plate (151); The leakage start component (16) comprises an insulating sleeve (161) fixedly mounted inside the frame-shaped air cavity (153); a piston (162) is slidably mounted inside the insulating sleeve (161); an insulating rod (163) is fixedly mounted on the side wall of the piston (162); a conductive column (164) is fixedly mounted on one end of the insulating rod (163) away from the piston (162); a conductive ring (165) matching the conductive column (164) is fixedly mounted on the inner wall of the insulating sleeve (161); the conductive ring (165) is in sliding contact with the side wall of the conductive column (164); a spring (166) is fixedly mounted between the piston (162) and the inner wall of the insulating sleeve (161); and each of the photoelectric switches (115) is electrically connected to the voice prompter (124) and the corresponding direction indicator light bar (122) via the control mainboard (17), the conductive column (164) and the conductive ring (165).

2. The air tightness detection device for lead-protected electric door according to claim 1, characterized in that: The counting start mechanism (18) comprises a columnar groove (181) formed on a side wall of the frame plate (1) close to the door leaf (3), a proximity switch (182) being fixedly mounted on the bottom of the columnar groove (181), an electromagnetic switch (183) electrically connected to the proximity switch (182) being fixedly mounted inside the hollow plate (151), a first counter (184) being fixedly mounted inside the hollow plate (151), the electromagnetic switch (183) being electrically connected to the first counter (184), the first counter (184) being electrically connected to the control main board (17), and the proximity switch (182) being electrically connected to the air pump (152).

3. The air tightness detection device for lead-protected electric door according to claim 2, characterized in that: A hollow strip (19) is provided on one side of the hollow plate (151), and a plurality of air injection holes (20) are provided at the bottom of the hollow strip (19). Two connecting pipes (21) are fixedly plugged into the hollow strip (19) and the hollow plate (151), and normally open solenoid valves (22) are installed inside the two connecting pipes (21).

4. The air tightness detection device for lead-protected electric door according to claim 3, characterized in that: A second counter (23) is fixedly installed inside the hollow plate (151), the electromagnetic switch (183) is electrically connected to the second counter (23), and the second counter (23) is electrically connected to the voice prompter (124) via the control main board (17).

5. The detection method of the air tightness detection device of the lead-protected electric door according to claim 4 is characterized in that: The detection method comprises the following steps: S1, welding the frame plate (1) to the inside of the door frame (2), and installing the hollow plate (151) on the indoor wall of the radiation room, and drilling holes in the wall, and passing two connecting pipes (21) through the holes, and then installing the hollow bar (19) on the outer wall of the radiation room, so that the hollow bar (19) is located above the door leaf (3) of the lead-protected electric door, and the hollow bar (19) is connected to the two connecting pipes (21), and finally connecting the control main board (17) to the external circuit; S2, when the door leaf (3) of the lead protection electric door is closed, the counting start mechanism (18) counts the number of times the door leaf (3) of the lead protection electric door is closed, and outputs a start electrical signal to the control main board (17) after reaching a certain number of times; S3, after receiving the electrical signal from the counting start mechanism (18), the control main board (17) controls the driving sealing assembly (13) to work at a fixed time, so that the sealing gasket (133) on the frame-shaped movable plate (5) abuts against the door leaf (3); S4, the control main board (17) controls the air supply mechanism (15) to operate and delivers a fixed amount of air to the inside of the frame-shaped air groove (6), so that the connection circuit between the leakage start component (16) and the control main board (17) is disconnected; S5. After the control mainboard (17) receives the connection electrical signal from the leakage start component (16), the control mainboard (17) starts the voice prompter (124) and controls the indication component (12) to work. The staff determines the location of the leakage point according to the direction indicated by each direction indicator light bar (122) on the indication component (12).

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