Construction method for enhancing leakproofness of lead plate in medical space

Abstract

A construction method for enhancing leakproofness of a medical space lead plate belongs to the technical field of lead plate construction and comprises the following steps: a) paying off according to a construction paying-off diagram in the technical scheme; b) mounting a structural wall steel framework; c) mounting a structural top plate steel framework; d) installing a pipeline penetrating through a wall or a suspended ceiling; e) leveling, lofting and cutting the lead plate; f) fixing a lead plate; g) carrying out lap joint treatment on a plate seam lead plate; h) carrying out lap joint treatment on the corner lead plate; i) a lead plate additional layer is arranged at a pipeline node; j), the self-tapping screws are covered with lead plates; by utilizing the characteristic that rays can only go straight, the angle between a wall-penetrating or ceiling-penetrating pipeline and a radiation source is adjusted, and a lead plate additional layer is added around the pipeline, so that the rays are prevented from radiating outdoors through the pipeline; and the end part of the suspended ceiling screw rod is subjected to node conversion and is additionally provided with the lead plate gasket and the cover plate, so that rays are prevented from radiating outdoors through the thread screw rod, the mounting space and the cost are saved, and the leakproofness of the lead plate is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of lead plate construction, and specifically relates to a construction method for enhancing the airtightness of lead plates in medical spaces. Background Art

[0002] X-rays, gamma rays, and beta rays commonly used in clinical practice can cause harm to the human body, so radiation protection construction is required in hospital X-ray rooms, fluoroscopy rooms, gamma knife rooms, CT rooms, electron accelerator rooms, etc. Using radiation protection materials and radiation protection products to prevent radiation hazards is an important method and one of the effective means to protect the body. Radiation decoration will pay attention to radiation protection design, and lead plate is one of the necessary protective materials for hospitals.

[0003] Radiation has strong penetrability. A certain thickness of protective lead plate can block a certain proportion of radiation intensity. The radioactivity intensity decays exponentially with the thickness of the protective lead plate. These radiation rooms have the following weaknesses that need to be addressed:

[0004] 1. Indoors need power supply, air conditioning, medical gas, etc., so there will be pipe holes in the walls and ceilings. The holes in the radiation rooms in existing hospitals in China are generally not designed for radiation shielding. Because there are too many pipelines, it is difficult to block them. Therefore, the shielding of the maintenance structure that is so strictly guarded is destroyed because of the exposure of the holes through the wall or ceiling, and the shielding protection requirements cannot be met;

[0005] 2. The ceiling is suspended using screw threaded rods, keel frames, lead plates, and decorative surface layers. The screw thread of the ceiling passes through the lead plate, causing the radiation to radiate outside the machine room along the screw threaded rod, causing harm to the human body.

[0006] 3. Use self-tapping screws to fix the lead plate on the square steel keel frame. Even if the overlap is in accordance with the specification requirements, the self-tapping screws penetrate the lead plate, causing the radiation to radiate outside the machine room along the self-tapping screws, causing harm to the human body;

[0007] After searching, the invention with publication number CN116591330A provides a lead plate installation construction method for radiation protection engineering of radiological medical rooms, which mainly includes the following steps: S1. After the main structure of the radiological medical room is completed and passed the acceptance, the radiation protection engineering and secondary decoration engineering are started; S2. The technical scheme of the radiation protection engineering is determined; S3. The radiation protection engineering is carried out on the ground; S4. The radiation protection engineering is carried out on the wall; S5. The radiation protection engineering is carried out on the ceiling; S6. The fine decoration construction is carried out according to the fine decoration construction drawing; in this construction, a large amount of lead plate is used, and the cost is relatively high. At the same time, the screws are half-wrapped, and there is still a large opening. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a construction method for enhancing the airtightness of lead plates in medical spaces to solve the above problems.

[0009] A construction method for enhancing the airtightness of lead plates in medical spaces, comprising the following steps:

[0010] a) Lay out the lines according to the construction layout drawing in the technical plan;

[0011] b) Installation of structural wall steel frame;

[0012] c) Installation of structural top plate steel frame;

[0013] d) Installation of pipelines through walls or ceilings: Plan the hole sizes for electrical, air-conditioning, medical gas and other pipelines on the structural wall steel frame and the structural roof steel frame, strengthen the local keel, and install various professional pipelines. Before installation, consider the opening direction of the pipeline to avoid rays;

[0014] e) Lead plate leveling, setting out and cutting: The cut small pieces are collected in the waste box and reserved for making lead plate gaskets for self-tapping screws;

[0015] f) Fix the lead plate: According to the lead plate position line pre-set on the surface of the steel keel, pre-stick lead foil tape on the surface of the position line, then put the lead plate in place, check the position, and fix the wall with self-tapping screws of the lead plate gasket according to the specific construction requirements;

[0016] g) Overlapping of lead plates in plate seams: the lead plates installed later should overlap with the installed lead plates in front by 40±10mm, and the overlaps should be pressed flat with small wooden blocks, and self-tapping screws and lead plate gaskets should be installed at the overlaps;

[0017] h) Overlapping treatment of corner lead plates: The lead plates at the corners should overlap with the installed front lead plates by 40mm±10mm. The overlaps should be pressed flat with small wooden blocks, and self-tapping screws and lead plate gaskets should be installed at the overlaps.

[0018] i) Additional layer of lead plate at pipeline nodes; the overlap distance between the root of the pipeline and the wall or ceiling is ≥100mm, and the length of additional lead plate around the pipeline is 300mm more than the length of the long side or the diameter;

[0019] Beneficial effect: Form a continuous shielding layer to block radiation leakage along the pipeline gap.

[0020] j) Cover the self-tapping screws with lead plates: After the lead plates are installed, bend the lead plate gaskets at all the self-tapping screws to completely cover the nail caps.

[0021] The specific steps of installing the steel frame of the structure wall b are: the vertical keel of the steel square tube of the structure wall, and then the first horizontal keel of the steel square tube are installed, and the spacing between the fixed points of the keel wall is controlled within 500mm. After the installation is completed, the nodes and other damaged coatings are painted with anti-corrosion paint;

[0022] The specific steps of installing the steel frame of the C structure top plate are: installing a screw rod on the structure top plate, and connecting the bottom end of the screw rod to the ceiling fixing angle bracket;

[0023] The threaded screw is pre-installed with a lead sleeve, and the contact surface of the angle code is coated with radiation-proof glue containing lead powder epoxy resin before welding to further block the screw from transmitting radiation.

[0024] Beneficial effect: The grid structure is composed of vertical steel square tube keels + horizontal keels with a spacing of 500mm. Combined with ceiling screws and angle brackets, the structural stability is improved, the load-bearing lead plate weight is increased, and the standardized spacing simplifies the construction process and shortens the on-site adjustment time.

[0025] The specific steps of installing the C-structure top plate steel frame also include: welding and connecting the steel square tube longitudinal keel on one side of the ceiling fixing angle code, the fixing point is required to be consistent with the ground, and the second steel square tube transverse keel is installed according to the ground line. The spacing between the keel wall fixing points is controlled within 500mm. After the steel frame is installed, anti-corrosion paint is applied to the nodes and other damaged coating areas.

[0026] The specific steps of leveling, laying out and cutting the e-lead plate are: laying the blockboard on the flat leveling layer, then rolling the lead plate on it and lightly tapping it with a wooden square to make it flat, and cutting the lead plate according to the lead plate layout grid diagram. When cutting the lead plate, add the overlap length of the four sides, and mark the number after checking that it is correct.

[0027] The specific steps of fixing the lead plate are as follows: the bidirectional spacing of the self-tapping screws is 500mm; a 9mm thick flame retardant board is laid above the steel frame in the suspended ceiling, the lead plate is installed on the flame retardant board, and self-tapping screws and lead plate gaskets are added at the overlap, and the bidirectional spacing of the self-tapping screws is 500mm.

[0028] Beneficial effect: The lead plates overlap by 40±10mm and are fixed with lead gaskets and self-tapping screws. The bent part of the gasket is fully covered with the nail cap to further reduce possible leakage at the overlap.

[0029] The lead plate gasket includes a fixing portion and a bending portion, the fixing portion includes a first plate-shaped portion and a second plate-shaped portion, the first plate-shaped portion and the second plate-shaped portion are fixedly arranged or position-limited, the first plate-shaped portion and the second plate-shaped portion are perpendicular to each other, and the second plate-shaped portion is fixedly connected to the bending portion.

[0030] The bending portion includes a third plate-shaped portion and an arc-shaped portion or only includes an arc-shaped portion; when the bending portion includes a third plate-shaped portion and an arc-shaped portion, two ends of the third plate-shaped portion are fixedly connected to the end of the second plate-shaped portion and the end of the bending portion respectively, and when only the arc-shaped portion is included, the end of the arc-shaped portion is fixedly connected to the end of the second plate-shaped portion, and when the lead plate gasket is bent, the bending portion completely covers the upper surface of the first plate-shaped portion.

[0031] Beneficial effect: The arc-shaped or plate-shaped structure of the bent portion ensures 360° coverage of the self-tapping screws without dead angles, preventing radiation from leaking along the self-tapping screws.

[0032] A through hole is formed on the upper surface of the first plate-shaped portion, and a diameter of the through hole is smaller than that of the self-tapping screw.

[0033] Beneficial effect: Prevents the lead gasket from cracking due to random positioning when fixing with self-tapping screws, thus affecting the seal.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] Continuous shielding layer and ray blocking: Taking advantage of the fact that rays can only travel in a straight line, the angle between the pipeline passing through the wall or ceiling and the radiation source is adjusted, and an additional layer of lead plate is added around the pipeline to prevent rays from radiating to the outdoors through the pipeline; node conversion is performed at the end of the ceiling screw and additional lead plate gaskets and cover plates are added to prevent rays from radiating to the outdoors through the screw threads, which not only saves installation space and cost but also enhances the airtightness of the lead plate.

[0036] Cost reduction: Lead gaskets are used to prevent radiation leakage along the screws. There is no need to set up additional layers of lead plates to reduce costs. The structure of the lead gasket allows waste to be reused, further saving material costs.

[0037] Anti-corrosion and durability: Anti-corrosion painting is applied to the steel skeleton nodes and other damaged coating areas to extend the service life of the structure; the covering treatment of lead gaskets and self-tapping screws prevents radiation corrosion to the fixings and enhances durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 This is a schematic diagram of the unbent structure of the lead plate gasket;

[0040] Figure 2 c1 is a schematic diagram of the structure after the lead plate gasket is bent;

[0041] Figure 3 c2 is a schematic diagram of the structure after the lead plate gasket is bent;

[0042] Figure 4 It is a top view of the lead plate gasket after bending;

[0043] Figure 5 for Figure 4 Middle aa section view;

[0044] Figure 6 This is a schematic diagram of wall frame installation;

[0045] Figure 7 for Figure 6 Enlarged view of part A;

[0046] Figure 8 This is a schematic diagram of ceiling frame installation;

[0047] Fig. 9 This is a schematic diagram of the installation of additional lead plates at the air duct;

[0048] Fig.10 This is a schematic diagram of the self-tapping screw node processing structure;

[0049] Fig.11 The schematic diagram c3 is the structure diagram of the lead plate gasket after bending;

[0050] Fig.12 It is a schematic diagram of the structure in which a baffle is set after the lead plate gasket is bent;

[0051] Fig.13 This is a top view of the structure in which the baffle is set after the lead plate gasket is bent.

[0052] In the figure:

[0053] 1. Structural top plate;

[0054] 2. Structural wall;

[0055] 3. Ground;

[0056] 4. Fix the corner code of the top plate;

[0057] 5. Steel square tube vertical keel;

[0058] 6. The first steel square tube transverse keel;

[0059] 7. Lead sheet;

[0060] 8. Lead plate gasket; 801. First plate-shaped portion; 802. Second plate-shaped portion; 803. Third plate-shaped portion; 804. Arc-shaped portion; 805. Through hole; 806. Bend portion; 807. Groove; 808. Baffle;

[0061] 9. Self-tapping screws;

[0062] 10. Screw thread rod;

[0063] 11. Ceiling fixing angle code;

[0064] 12. Nut;

[0065] 13. Flame retardant board;

[0066] 14. Longitudinal keel of steel square tube;

[0067] 15. The second steel square tube transverse keel;

[0068] 16. Decorative surface layer;

[0069] 17. Pipeline;

[0070] 18. Additional layer of lead sheet;

[0071] 19. Steel square tube keel. DETAILED DESCRIPTION

[0072] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0073] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0074] Example 1

[0075] like Figure 6-10 As shown: A construction method for enhancing the airtightness of lead plates in medical spaces, comprising the following steps:

[0076] a) Lay out the lines according to the construction layout drawing in the technical plan, and survey and map out the center control line of the radiation-proof room floor 3, the edge lines of the inner and outer wall keels, the edge lines of the radiation-proof lead steel frame, the inner and outer decorative surface lines, the center line of the wall-mounted box installation, the outer edge line of the box and the elevation control line, and lead the line to the top surface of the concrete. Carry out acceptance of the on-site line setting, and after acceptance, handle the line inspection record and make good control protection lines. ;

[0077] b) Installation of structural wall 2 steel frame;

[0078] c) Installation of the steel frame of the structural top plate 1;

[0079] d) Installation of pipes 17 that pass through walls or ceilings: Plan the hole sizes for electrical, air-conditioning, medical gas and other pipelines on the steel frame of the structural wall 2 and the steel frame of the structural top plate 1, strengthen the local keel, and install various professional pipelines. Before installation, consider the opening direction of the pipeline to avoid rays;

[0080] e) Leveling, laying out and cutting of lead sheet 7: the cut small pieces are collected in the waste box and reserved for making lead sheet gaskets 8 for self-tapping screws;

[0081] f) Fix the lead plate 7: According to the position line of the lead plate 7 pre-set on the surface of the steel keel, pre-stick lead foil tape on the surface of the position line, then put the lead plate 7 in place, check the position, and fix the wall with self-tapping screws 9 of the lead plate gasket 8 according to the specific construction requirements;

[0082] g) Overlapping of lead plates in plate seams; the lead plates 7 installed later should overlap with the installed front lead plates 7 by 40±10mm, and the overlaps should be pressed flat with a small wooden square, and self-tapping screws 9 and lead plate gaskets 8 should be installed at the overlaps;

[0083] h) Overlapping of corner lead plates: The lead plates 7 at the corners should overlap with the installed front lead plates 7 by 40mm±10mm. The overlaps should be pressed flat with a small wooden square, and self-tapping screws 9 and lead plate gaskets 8 should be installed at the overlaps.

[0084] i) Additional layer of lead plate 18 at pipeline nodes; the overlap distance between the root of the pipe 17 and the lead plate 7 on the wall or ceiling is ≥100mm, and the length of the additional lead plate 7 around the pipe 17 is 300mm more than the length of the long side or the diameter;

[0085] Beneficial effect: Form a continuous shielding layer to block radiation leakage along the pipeline gap.

[0086] j) Lead sheet covering at the self-tapping screws: After the lead sheet 7 is installed, bend the lead sheet gaskets 8 at all the self-tapping screws 9 to completely cover the nail caps;

[0087] k) Installation of decorative surface.

[0088] Example 2

[0089] like Figure 8-10 As shown, on the basis of claim 1, the specific steps of b) the installation of the steel skeleton of the structural wall 2 are: the steel square tube vertical keel 5 of the structural wall 2, and then the first steel square tube horizontal keel 6 is installed, and the spacing between the keel wall fixing points is controlled within 500mm. After the installation is completed, the nodes and other damaged coatings are painted with anti-corrosion paint;

[0090] The specific steps of c) installing the steel frame of the structure top plate 1 are: installing the screw threaded rod 10 on the structure top plate 1, and connecting the bottom end of the screw threaded rod 10 to the ceiling fixing angle bracket 11;

[0091] The threaded screw rod 10 is pre-installed with a lead sleeve, and the contact surface of the angle code is coated with radiation-proof glue containing lead powder epoxy resin before welding to further block the radiation transmitted by the screw rod.

[0092] Beneficial effect: The grid structure is composed of 5 steel square tube vertical keels + horizontal keels with a spacing of 500mm, combined with ceiling screws 10 and angle codes 11 for fixing, which improves the structural stability and the load-bearing lead plate weight. The standardized spacing simplifies the construction process and shortens the on-site adjustment time.

[0093] The specific steps of installing the steel frame of the structure top plate 1 c) also include: welding and connecting the steel square tube longitudinal keel 14 on one side of the ceiling fixing angle code 11, the fixing point is required to be consistent with the ground, and the second steel square tube transverse keel 15 is installed according to the ground line. The spacing between the keel wall fixing points is controlled within 500mm. After the steel frame is installed, the nodes and other damaged coatings are painted with anti-corrosion paint; the steel square tube keel 19 is a 50×30×2.0mm rectangular steel tube.

[0094] The specific steps of e) leveling, laying out and cutting the lead plate are: laying the blockboard on the flat leveling layer, then rolling the lead plate on it and lightly tapping it with a wooden board to make it flat, cutting the lead plate 7 according to the lead plate 7 layout grid diagram, adding the overlap lengths on all four sides when cutting the lead plate 7, and marking the numbers after checking that they are correct.

[0095] The specific steps of f) fixing the lead plate are: the bidirectional spacing of the self-tapping screws 9 is 500mm; a 9mm thick flame retardant board 13 is laid above the steel frame in the suspended ceiling, the lead plate 7 is installed on the flame retardant board 13, and self-tapping screws 9 and lead plate gaskets 8 are added at the overlap, and the bidirectional spacing of the self-tapping screws 9 is 500mm.

[0096] Beneficial effect: The lead plate 7 overlaps by 40±10 mm, and is fixed at the overlap with a lead plate gasket 8 and a self-tapping screw 9, and the gasket bending portion 806 fully covers the nail cap, further reducing possible leakage at the overlap.

[0097] Example 3

[0098] like Figure 1-5 As shown, on the basis of Example 1, the lead plate gasket 8 includes a fixed portion and a bending portion 806, the fixed portion includes a first plate-like portion 801 and a second plate-like portion 802, the first plate-like portion 801 and the second plate-like portion 802 are fixedly arranged or limitedly arranged, the first plate-like portion 801 and the second plate-like portion 802 are perpendicular to each other, and the second plate-like portion 802 is fixedly connected to the bending portion 806.

[0099] The bending portion 806 includes a third plate-like portion 803 and an arc-shaped portion 804 or only includes the arc-shaped portion 804; when the bending portion 806 includes the third plate-like portion 803 and the arc-shaped portion 804, the two ends of the third plate-like portion 803 are respectively fixedly connected to the end of the second plate-like portion 802 and the end of the bending portion 806; when only the arc-shaped portion 804 is included, the end of the arc-shaped portion 804 is fixedly connected to the end of the second plate-like portion 802; when the lead plate gasket 8 is bent, the bending portion 806 completely covers the upper surface of the first plate-like portion 801.

[0100] Beneficial effect: The arc-shaped or plate-shaped structure of the bent portion 806 ensures that the self-tapping screw 9 is covered 360° without dead angles, thereby preventing radiation from leaking along the self-tapping screw 9.

[0101] A through hole 805 is formed on the upper surface of the first plate-like portion 801, and the diameter of the through hole 805 is smaller than the self-tapping screw 9, so as to prevent the lead plate gasket 8 from cracking due to random positioning when fixing with the self-tapping screw 9, thereby affecting the sealing.

[0102] Example 4

[0103] like Fig.11 As shown, on the basis of Example 3, a groove 807 is opened on the inner surface of the second plate-like portion 802 to control the bending direction and ensure complete coverage. Furthermore, a groove is set on the inner surface of the third plate-like portion 803 or the arc-shaped portion 804, so that when the third plate-like portion 803 or the arc-shaped portion 804 is bent, it can further fit to wrap the self-tapping screw 9.

[0104] Example 5

[0105] like Figure 12-13 As shown, on the basis of Example 3, blocks 808 are provided on both sides of the first plate-shaped portion 801 , and the bent portion 806 is bent between the two blocks 808 for positioning during bending, thereby achieving complete protection of the self-tapping screws 9 .

[0106] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0107] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A construction method for enhancing the airtightness of lead plates in medical spaces, characterized in that: The following steps are involved: a) Lay out the lines according to the construction layout drawing in the technical plan; b) Structural wall (2) steel frame installation; c) Installation of structural top plate (1) steel frame; d) Installation of pipes (17) that penetrate walls or ceilings: Plan the hole sizes for electrical, air-conditioning, medical gas and other pipelines on the steel frame of the structural wall (2) and the steel frame of the structural ceiling (1), strengthen the local keel, and install various professional pipelines. Before installation, consider the opening direction of the pipeline to avoid radiation; e) Leveling, laying out and cutting of lead sheet (7): the cut small pieces are collected in a waste box and reserved for making lead sheet gaskets (8) for self-tapping screws; f) Fixing the lead plate (7): According to the lead plate (7) position line pre-set on the surface of the steel keel, pre-stick lead foil tape on the surface of the position line, then put the lead plate (7) in place, check the position, and fix the wall with self-tapping screws (9) of the lead plate gasket (8) according to specific construction requirements; g) Overlapping of lead plates in plate seams; the lead plates (7) installed later should overlap with the installed front lead plates (7) by 40±10mm, and the overlaps should be pressed flat with a small wooden square, and self-tapping screws (9) and lead plate washers (8) should be installed at the overlaps; h) Overlapping of corner lead plates: The lead plates (7) at the corners should overlap with the installed front lead plates (7) by 40 mm ± 10 mm. The overlapped areas should be pressed flat with a small wooden square. Self-tapping screws (9) and lead plate washers (8) should be installed at the overlapped areas. i) Additional layer of lead plate (18) at pipeline nodes; the overlap distance between the root of the pipeline (17) and the lead plate (7) on the wall or ceiling is ≥100mm, and the length of the additional lead plate (7) around the pipeline (17) is 300mm more than the length of the long side or the diameter; j) Covering the self-tapping screws with lead plates: After the lead plates (7) are installed, bend the lead plate washers (8) at all the self-tapping screws (9) to completely cover the nail caps.

2. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 1, characterized in that: The specific steps of installing the steel frame of the structural wall (2) are as follows: first, the vertical steel square tube keel (5) of the structural wall (2) is installed, and then the first steel square tube horizontal keel (6) is installed. The spacing between the keel wall fixing points is controlled within 500 mm. After the installation is completed, the nodes and other damaged coatings are painted with anti-corrosion paint.

3. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 1, characterized in that: The specific steps of installing the steel frame of the structure top plate (1) are as follows: the structure top plate (1) is installed with a screw threaded rod (10), and the bottom end of the screw threaded rod (10) is connected to a ceiling fixing angle bracket (11).

4. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 3, characterized in that: The specific steps of installing the steel frame of the structural top plate (1) c) also include: pre-installing lead sleeves on the threaded screw rod (10), and coating the contact surface of the angle code with radiation-proof glue; One side of the ceiling fixing angle code (11) is welded to the steel square tube longitudinal keel (14), and the fixing point is required to be consistent with the ground. According to the ground line, the second steel square tube transverse keel (15) is installed, and the spacing between the keel wall fixing points is controlled within 500mm. After the steel frame is installed, the nodes and other damaged coatings are painted with anti-corrosion paint.

5. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 1, characterized in that: The specific steps of e) leveling, laying out and cutting the lead plate are as follows: laying the blockboard on the flat leveling layer, then rolling the lead plate on it and lightly tapping it with a wooden board to make it flat, cutting the lead plate (7) according to the lead plate (7) layout grid diagram, adding the overlap lengths on all four sides when cutting the lead plate (7), and marking the numbers after checking that they are correct.

6. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 1, characterized in that: The specific steps of fixing the lead plate in f) are as follows: the bidirectional spacing of the self-tapping screws (9) is 500 mm; a 9 mm thick flame retardant plate (13) is laid above the steel frame in the suspended ceiling, a lead plate (7) is installed on the flame retardant plate (13), and self-tapping screws (9) and lead plate gaskets (8) are added to the overlapped parts, and the bidirectional spacing of the self-tapping screws (9) is 500 mm.

7. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 1, characterized in that: The lead plate gasket (8) includes a fixing portion and a bending portion (806), the fixing portion includes a first plate-shaped portion (801) and a second plate-shaped portion (802), the first plate-shaped portion (801) and the second plate-shaped portion (802) are fixedly arranged or position-limited, the first plate-shaped portion (801) and the second plate-shaped portion (802) are perpendicular to each other, and the second plate-shaped portion (802) is fixedly connected to the bending portion (806).

8. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 7, characterized in that: The bending portion (806) includes a third plate-like portion (803) and an arc-shaped portion (804) or only includes an arc-shaped portion (804); when the bending portion (806) includes a third plate-like portion (803) and an arc-shaped portion (804), two ends of the third plate-like portion (803) are respectively fixedly connected to the end of the second plate-like portion (802) and the end of the bending portion (806); when only the arc-shaped portion (804) is included, the end of the arc-shaped portion (804) is fixedly connected to the end of the second plate-like portion (802); when the lead plate gasket (8) is bent, the bending portion (806) completely covers the upper surface of the first plate-like portion (801).

9. A construction method for enhancing the airtightness of lead plates in medical spaces according to claim 8, characterized in that: A through hole (805) is provided on the upper surface of the first plate-shaped portion (801), and the diameter of the through hole (805) is smaller than the self-tapping screw (9).

10. A method for using a lead sheet gasket (8), comprising the lead sheet gasket (8) according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Insert the lead plate gasket (8) through the through hole (805) and into the self-tapping screw (9); S2. Tighten the screws at the installation position until the surface of the lead plate (7) sinks; S3. Bend the bending portion (806) to ensure that it fits the lead plate (7) without any gap or fully covers the first plate-shaped portion (801).

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