Radiation-proof one-time concrete pouring construction air pipe and through-wall assembly method thereof

Abstract

The invention relates to the technical field of ventilation, in particular to an anti-radiation one-time concrete pouring construction air duct and a through-wall assembly method.The anti-radiation one-time concrete pouring construction air duct comprises a lower-layer steel mold, two side steel molds, a reinforcing steel mold and an upper-layer cover plate, the two side steel molds are welded to the left side and the right side of the lower-layer steel mold respectively, and the reinforcing steel mold is welded to the middle of the lower-layer steel mold; the upper-layer cover plate is welded to the tops of the two-side steel molds and the reinforcing steel mold, a plurality of fixing clamps are welded to the inner side faces of the lower-layer steel mold, the two-side steel molds, the reinforcing steel mold and the upper-layer cover plate, heat preservation layers are placed on the left side and the right side of the reinforcing steel mold and abut against the ends of the fixing clamps, and Z-shaped air pipes are connected into the heat preservation layers. The Z-shaped air pipe and steel template design is combined with the angle steel flange connection process, X-ray linear propagation is blocked through a multi-stage bending path, the radiation leakage risk is remarkably reduced, meanwhile, the full-length welding process and heat preservation layer overall coating are adopted, the leakproofness of the air pipe connector is ensured, airflow leakage is completely eradicated, and radiation gas is directionally and safely exhausted.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation, and in particular to a radiation-proof disposable concrete casting construction air duct and a wall-piercing assembly method thereof. Background Art

[0002] In the medical field, a particle linear accelerator room needs to adopt an ultra-thick concrete structure to prevent radiation leakage, and the air duct of its ventilation system needs to be arranged through the wall for ventilation. In the prior art, the conventional linear air duct opening is easy to cause X-ray leakage. Optimizing it into a Z-shaped reserved opening can achieve a radiation-proof effect. At the same time, the structural wall cannot have a construction joint and needs to be cast in one piece, otherwise it will increase the risk of X-ray overflow. However, in the traditional construction method, due to the design defect of the formwork and the deficiency of the air duct assembly process, it is difficult to achieve efficient construction and reliable sealing. The Z-shaped opening reserved in the wall makes it impossible to remove the formwork due to its complex shape, and there are problems such as difficult joint connection, incomplete laying of the insulation layer, and insecure fixation when the air duct is installed in sections, seriously affecting the construction efficiency and radiation-proof performance.

[0003] Therefore, a radiation-proof disposable concrete casting construction air duct and a wall-piercing assembly method thereof are proposed. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a radiation-proof disposable concrete casting construction air duct and a wall-piercing assembly method thereof.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a radiation-proof disposable concrete casting construction air duct, characterized in that it includes a lower steel formwork, two side steel formworks, a reinforcing steel formwork and an upper cover plate. The number of the two side steel formworks is two and they are respectively welded to the left and right sides of the lower steel formwork. The reinforcing steel formwork is welded in the middle of the lower steel formwork. The upper cover plate is welded to the tops of the two side steel formworks and the reinforcing steel formwork. A number of fixing clips are welded to the inner sides of the lower steel formwork, the two side steel formworks, the reinforcing steel formwork and the upper cover plate. Heat preservation layers are placed on the left and right sides of the reinforcing steel formwork, and the heat preservation layers abut against the ends of the fixing clips. A Z-shaped air duct is connected inside the heat preservation layer. The Z-shaped air duct is formed by connecting multiple air ducts in a Z shape through angle steel flanges. The lower steel formwork, the two side steel formworks, the reinforcing steel formwork, the upper cover plate and the heat preservation layer are all in a Z shape.

[0006] As a preferred technical solution of the present invention, a fixing plate assembly for fixing the steel mold to assist in improving the welding quality is provided inside the lower steel mold. The fixing plate assembly includes a suction cup frame. The suction cup frame is arranged on the top surface at the front end of the lower steel mold. Holes are formed on the side surface and the top surface of the suction cup frame, and negative pressure suction cups are installed in the holes. A connecting pipeline is fixedly connected to the end of the suction cup frame. An interface connected to the negative pressure suction cup is provided on the outer wall of the connecting pipeline, and the negative pressure suction cup is connected and communicated with the connecting pipeline. An air cylinder is connected to the upper end of the suction cup frame. An opening is formed on the front surface of the air cylinder, and a plug column is sleeved in the opening. A return spring is abutted between the end of the plug column and the inner wall of the air cylinder. A check valve I is installed on the surface of the air cylinder corresponding to the connecting pipeline. The check valve I is connected and communicated with the plug column. A check valve II is installed on the rear side surface of the air cylinder. The check valve I can allow air to enter the air cylinder unidirectionally, and the check valve II can allow air to exit the air cylinder unidirectionally. The end of the connecting pipeline away from the air cylinder is connected with an exhaust plug. An opening is formed on the surface of the exhaust plug corresponding to the connecting pipeline. An air rod is sleeved in the opening on the side surface of the exhaust plug. Both ends of the air rod are communicated, and through holes are formed on the outer wall of the air rod located outside the exhaust plug.

[0007] As a preferred technical solution of the present invention, an adjusting component for adjusting the position of the fixing plate assembly to fix the reinforcing steel mold is provided on the lower steel mold. The adjusting component includes a slide rail. The slide rail is connected to the top surface at the front end of the lower steel mold. A long rectangular hole is formed on the top surface of the slide rail. Positioning grooves are formed on the front and rear surfaces of the slide rail at positions corresponding to the welding area. A sliding frame in the shape of a rectangular frame is sleeved on the outer side surface of the slide rail. Holes are formed on the front and rear surfaces of the sliding frame, and positioning pins are sleeved in the holes. A rod body is connected to the end of the positioning pin. The positioning pin is inserted into the positioning groove. A support spring is sleeved on the rod body of the positioning pin. A circular hole is formed on the top surface of the sliding frame, and a turntable is rotatably connected in the circular hole. A limiting column is connected to the bottom surface of the turntable. The limiting column is sleeved in the rectangular hole of the sliding frame. A column is connected to the outer edge of the top surface of the turntable. The top end of the column is connected to the lower end of the suction cup frame.

[0008] As a preferred technical solution of the present invention, front and rear cover plates are threadedly connected to the front and rear end faces of the two side steel molds. Avoidance holes are formed on the front surfaces of the front and rear cover plates at positions corresponding to the Z-shaped air ducts. A detection component for pumping air and sampling impurities inside the steel mold is provided inside the lower steel mold. The detection component includes an operating shaft. Openings are formed on the front surfaces of the front and rear cover plates, and the operating shaft is rotatably installed in the openings. One end of the operating shaft located inside the lower steel mold is connected with a cam disc. A plurality of curved protrusions are provided on the outer wall of the cam disc. A handle is connected to the end of the operating shaft located outside the lower steel mold. An opening is formed on the front surface of the front and rear cover plates on one side of the operating shaft, and a sampling cylinder is connected in the opening. A transparent plate is connected to the surface of the sampling cylinder located outside the lower steel mold. Sieve holes are formed on the surface of the sampling cylinder located inside the lower steel mold. A sampling tube is connected and communicated with the bottom surface of the sample cylinder. Sampling cylinders are connected to the surfaces of the two side steel molds located inside the lower steel mold. The front and rear ends of the sampling cylinder are close to the front and rear ends of the two side steel molds. A plurality of sampling tubes are connected and communicated with the upper and lower surfaces of the sampling cylinder at equal intervals. An opening is formed at the front end of the sampling cylinder, and the sampling tube is sleeved into it.

[0009] As a preferred technical solution of the present invention, a fixing plate assembly and an adjustment component are also provided on the top surface at the rear end of the lower steel mold. There are no air extraction components such as air cylinders on the suction cup holder on the top surface at the rear end of the lower steel mold. The bottom surface of the connecting pipeline is connected and communicated with a manifold. The center of the manifold corresponds to the center of the turntable. A rotatable air pipe joint is installed at the nozzle of the manifold. A connecting pipe is connected between two rotatable air pipe joints corresponding to the front and rear.

[0010] A wall-piercing assembly method for a radiation-proof disposable concrete-cast construction air duct, characterized by comprising the following steps:

[0011] S1. Air duct assembly;

[0012] S2. Installation in place;

[0013] Wherein the S1 includes the following steps:

[0014] S101. Construct a BIM model through the structural drawings, analyze the internal shape of the hole, the corner position, and the dimensions of each surface, and reverse-deduce the processing dimensions of the steel formwork. The lower steel mold and the upper cover plate are both welded into the shape by three steel plates. The two side steel molds and the strengthening steel mold are directly cut and formed according to the processing dimensions;

[0015] S102. Weld and fix the cards on the steel mold according to the position of the Z-shaped air duct, with a spacing of 200 mm;

[0016] S103. After removing the rust from the inner sides of the two side steel molds, the strengthening steel mold, the upper cover plate, the fixed cards and the welds of the fixed cards, apply an anti-rust paint to prevent the internal corrosion of the steel plates;

[0017] S104. Connect the adjustment component on the lower steel mold according to the preset position, install the fixing plate assembly on the adjustment component, and first assemble the lower steel mold, the two side steel molds and the strengthening steel mold by welding;

[0018] S105. According to the air supply and exhaust requirements of the linear accelerator room, the sizes of the supply air duct and the exhaust air duct are both 500x250 mm. The Z-shaped air duct sub-systems are prefabricated and processed respectively. The Z-shaped air ducts are connected by angle steel flanges. After installation, conduct a ventilation test to check the airtightness of the joints and the air volume;

[0019] S106. The insulation layer is integrally coated with 30 mm ultra-fine centrifugal glass wool and fixed with a special insulation glue;

[0020] S107. The outside of the insulation layer is protected with 0.5 mm iron sheet to avoid damage and deformation of the insulation layer during subsequent construction;

[0021] S108. Combine the prefabricated insulated air duct with the processed steel formwork at the predetermined position and place it on both sides of the strengthening steel mold in the lower steel mold;

[0022] S109. After the installation of the two Z-shaped air ducts is completed, install the upper cover plate. The lower steel formwork, the two side steel formworks, the strengthening steel formwork and the upper cover plate are all welded with 12-mm thick strengthening steel plates, and all the welds are full welds to ensure that concrete will not seep into the interior of the steel formwork during concrete pouring. During the welding process, use the fixing plate assembly to increase the stability of the steel formwork, ensure the welding quality, and avoid the efficiency problems caused by the need to disassemble and assemble due to the offset of the steel formwork;

[0023] Among them, S2 includes the following steps:

[0024] S201. First, bind the walls on both sides of the opening and the hidden beam at the lower part of the opening. After binding, set concrete protection pads;

[0025] S202. Install the steel formwork and the Z-shaped air duct assembly in place. After installation, set additional steel bar protection layer top formwork bars to ensure that the steel formwork will not shift during concrete pouring;

[0026] S203. Set concrete protection pads above the steel formwork, bind the hidden beam at the upper part of the opening and the wall steel bars, and set upper protection layer top formwork bars;

[0027] S204. After the steel bar acceptance is completed, close the wall formwork. First, pour a small amount of concrete, and use the detection component to detect the internal state of the lower steel formwork to judge whether there is concrete infiltration. When there is concrete infiltration, remove a small amount of concrete and then repair the defects. When there is no concrete infiltration, pour the subsequent concrete.

[0028] Compared with the prior art, the beneficial effects that the present invention can achieve are:

[0029] 1. Through the design of the Z-shaped air duct and the steel formwork in combination with the angle steel flange connection process, block the straight-line propagation of X-rays through multiple bending paths, significantly reduce the risk of radiation leakage. At the same time, the full-weld process and the overall coating of the insulation layer ensure the airtightness of the air duct joints, prevent air leakage, and realize the directional and safe discharge of radioactive gas.

[0030] 2. Through the negative pressure adsorption technology of the fixing plate assembly and the slide rail positioning design of the position adjustment assembly, realize the rapid fixation and precise adjustment of the steel formwork, thereby improving the welding efficiency and stability of the Z-shaped steel formwork, and reducing the rework caused by welding offset.

[0031] 3. The cam disk drive air extraction and sampling function of the detection component can extract the impurity samples in the steel formwork in real time, directly observe impurities such as concrete infiltration and rust through the transparent plate, and combine with the test pouring of a small amount of concrete to avoid the risk of large-scale rework.

[0032] 4. The steel formwork adopts a full-weld process with 12-mm thick steel plates, and is fixed with additional steel bar protection layer top formwork bars. Combined with the outer covering of the insulation layer with 0.5-mm thick iron sheet protection, the compressive and anti-deformation capabilities are greatly improved, and the service life of the air duct is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the present invention with the upper cover plate removed;

[0035] Figure 3 It is a structural schematic diagram inside the steel formwork of the present invention;

[0036] Figure 4 It is a disassembled structural schematic diagram of the steel formwork of the present invention;

[0037] Figure 5 It is a schematic diagram of the welding state of the steel molds on both sides of the present invention;

[0038] Figure 6 It is a top view structural schematic diagram of the fixed plate assembly and the position adjustment assembly of the present invention;

[0039] Figure 7 It is a front view structural schematic diagram of the fixed plate assembly and the position adjustment assembly of the present invention;

[0040] Figure 8 It is an exploded structural schematic diagram of the position adjustment assembly of the present invention;

[0041] Figure 9 It is a structural schematic diagram of the detection assembly of the present invention.

[0042] Wherein: 10, lower steel mold; 11, steel molds on both sides; 12, reinforcing steel mold; 13, upper cover plate; 14, fixing clamp; 15, thermal insulation layer; 16, Z-shaped air duct; 17, fixed plate assembly; 18, suction cup holder; 19, negative pressure suction cup; 20, connecting pipeline; 21, air cylinder; 22, plug column; 23, check valve one; 24, check valve two; 25, closing plug; 26, exhaust plug; 27, air rod; 28, position adjustment assembly; 29, slide rail; 30, positioning groove; 31, sliding frame; 32, positioning pin; 33, turntable; 34, limit column; 35, column; 36, manifold; 37, connecting pipe; 38, front and rear cover plates; 39, detection assembly; 40, avoidance hole; 41, operating shaft; 42, cam disc; 43, handle; 44, sample cylinder; 45, sieve hole; 46, sampling cylinder; 47, sampling pipe; 48, insertion pipe. DETAILED DESCRIPTION OF THE INVENTION

[0043] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without making creative efforts all fall within the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0044] Embodiment: As Figure 1 , Figure 3 and Figure 4 shown, a radiation-proof disposable concrete-cast construction air duct and its wall-piercing assembly method include a lower steel mold 10, two side steel molds 11, a reinforcing steel mold 12 and an upper cover plate 13. The number of the two side steel molds 11 is two and they are respectively welded to the left and right sides of the lower steel mold 10. The reinforcing steel mold 12 is welded in the middle of the lower steel mold 10. The upper cover plate 13 is welded on the tops of the two side steel molds 11 and the reinforcing steel mold 12. A number of fixing clips 14 are welded on the inner sides of the lower steel mold 10, the two side steel molds 11, the reinforcing steel mold 12 and the upper cover plate 13. Heat insulation layers 15 are placed on the left and right sides of the reinforcing steel mold 12. The heat insulation layers 15 abut against the ends of the fixing clips 14. A Z-shaped air duct 16 is connected inside the heat insulation layers 15. The Z-shaped air duct 16 is formed by connecting multiple air ducts in a Z shape through angle steel flanges. The two ends of the Z-shaped air duct 16 protrude from both ends of the heat insulation layers 15. The lower steel mold 10, the two side steel molds 11, the reinforcing steel mold 12, the upper cover plate 13 and the heat insulation layers 15 are all in a Z shape.

[0045] Specifically, when the air duct is ventilated, the X-rays in the form of linear propagation are prevented from leaking out through the Z-shaped structural design, greatly improving the radiation-proof effect.

[0046] As Figure 5 , Figure 6 and Figure 7As shown, since the lower steel mold 10 and other structures are set in a Z shape, the weight of the steel mold is greatly increased. During welding, the vertical steel mold has the risk of position deviation and tilt, which leads to the reduction of welding quality and efficiency. For this reason, a fixing plate assembly 17 for fixing the steel mold to assist in improving the welding quality is provided inside the lower steel mold 10. The fixing plate assembly 17 includes a suction cup frame 18. The suction cup frame 18 is arranged on the top surface of the front end of the lower steel mold 10. The suction cup frame 18 is in an inverted L shape. The side and top surfaces of the suction cup frame 18 are provided with holes, and a negative pressure device is installed in the hole. The suction cup 19 is a known technology. After being attached to a fixed surface, negative pressure is generated inside the suction cup 19 to achieve the effect of adsorption. The edge of the adsorption surface of the negative pressure suction cup 19 is connected with a rubber ring for improving the sealing performance. The end of the suction cup frame 18 is fixedly connected with a connecting pipe 20. The outer wall of the connecting pipe 20 is provided with an interface connected to the negative pressure suction cup 19, and the negative pressure suction cup 19 is connected and communicated with the connecting pipe 20. The upper end of the suction cup frame 18 is connected with an air cylinder 21 through a C-shaped frame. The front of the air cylinder 21 has a hole and is sleeved with a plug 22. The plug 2 2 can slide on the inner wall of the cylinder 21 and is sealed with the inner wall of the cylinder 21 through a rubber ring. A return spring (not shown in the figure) is in contact between the end of the plug 22 and the inner wall of the cylinder 21. It should be noted that the return spring needs to be a model with strong elasticity. A one-way valve 23 is installed on the side of the cylinder 21 corresponding to the connecting pipeline 20. The one-way valve 23 is connected and communicated with the plug 22. A one-way valve 24 is installed on the rear side of the cylinder 21. Both the one-way valve 23 and the one-way valve 24 are communicated with the cylinder 21. Both the one-way valve 23 and the one-way valve 24 are According to the existing known technology, the one-way valve 23 and the one-way valve 24 have the function of one-way ventilation, and the one-way valve 23 can ventilate the inside of the air cylinder 21 in one way, and the one-way valve 24 can ventilate the outside of the air cylinder 21 in one way. It should be noted that a closing plug 25 is inserted into the pipe mouth of the negative pressure suction cup 19, and an exhaust plug 26 is connected to the end of the connecting pipeline 20 away from the air cylinder 21. The exhaust plug 26 corresponds to an opening on one side of the connecting pipeline 20. A hole is opened on the side of the exhaust plug 26 and a gas rod 27 is sleeved thereon. The two ends of the gas rod 27 are connected and a through hole is opened on the outer wall outside the exhaust plug 26.

[0047] Specifically, when welding the steel molds 11 on both sides and the upper cover plate 13, first pull out the closing plug 25 in the negative pressure suction cup 19 on the corresponding surface, and then attach the upper cover plates 13 of the steel molds 11 on both sides to the negative pressure suction cup 19 at the welding position, so as to form a sealed space between the negative pressure suction cup 19 and the upper cover plates 13 of the steel molds 11 on both sides. Press the plug post 22 into the air cylinder 21, and the plug post 22 discharges the air in the air cylinder 21 through the check valve II 24. Then release the plug post 22, and the plug post 22 is reset by the return spring and extracts air through the check valve I 23. The check valve I 23 is connected to the negative pressure suction cup 19 through the plug post 22, thereby sucking away the air in the adsorption surface of the negative pressure suction cup 19. By repeatedly pressing the plug post 22, the air in the negative pressure suction cup 19 can be further reduced until it is close to vacuum. Due to the internal and external air pressure difference, the upper cover plates 13 of the steel molds 11 on both sides are adsorbed on the negative pressure suction cup 19, so as to maintain the stability of the positions of the upper cover plates 13 of the steel molds 11 on both sides during the welding process, and further improve the welding quality. After the welding is completed, push the air rod 27 to slide on the exhaust plug 26, so that the through hole on the air rod 27 enters the exhaust plug 26, and the external air enters the negative pressure suction cup 19 through the through hole, filling the negative pressure suction cup 19 with air, thus facilitating the separation of the negative pressure suction cup 19 from the upper cover plates 13 of the steel molds 11 on both sides.

[0048] As Figure 5 and Figure 8 shown, an adjustment component 28 for adjusting the position of the fixing plate component 17 to fix the reinforcing steel mold 12 is arranged on the lower steel mold 10. The adjustment component 28 includes a slide rail 29, and the slide rail 29 is connected to the front top surface of the lower steel mold 10. A long rectangular hole is opened on the top surface of the slide rail 29, and positioning grooves 30 are opened on the front and rear surfaces of the slide rail 29 at positions corresponding to the welding area. The top surface of the positioning groove 30 is curved. A sliding frame 31 in the shape of a rectangular frame is sleeved on the outer side surface of the slide rail 29. There is a gap between the bottom of the sliding frame 31 and the slide rail 29. Through holes are opened on the front and rear surfaces of the sliding frame 31, and positioning pins 32 are sleeved in the through holes. The end of the positioning pin 32 is connected with a rod body. The shape and size of the positioning pin 32 are adapted to the positioning groove 30, and the positioning pin 32 is inserted into the positioning groove 30. A support spring is sleeved on the rod body of the positioning pin 32, and the support spring abuts against the sliding frame 31. A round hole is opened on the top surface of the sliding frame 31, and a turntable 33 is rotatably connected in the round hole. A limiting column 34 is connected to the bottom surface of the turntable 33. The limiting column 34 is square and sleeved in the rectangular hole of the sliding frame 31. A column 35 is connected to the outer edge of the top surface of the turntable 33, and the top end of the column 35 is connected to the lower end of the suction cup frame 18.

[0049] Specifically, when it is necessary to weld the reinforcement steel mold 12, the sliding frame 31 is pulled up, the positioning pin 32 slides along the curved surface of the positioning groove 30 and exits the positioning groove 30, compressing the support spring. At this time, the limit post 34 disengages from the sliding frame 31, and the turntable 33 can be driven to rotate to adjust the orientation of the adsorption surface of the negative pressure suction cup 19. Then, the sliding frame 31 is pushed to slide on the slide rail 29 to the middle of the lower steel mold 10. After the sliding frame 31 is lowered, when the positioning pin 32 corresponds to the positioning groove 30, the support spring releases energy and pushes the positioning pin 32 into the positioning groove 30 to limit the position of the negative pressure suction cup 19. Then, the operation of adsorption and fixation is repeated to fix the reinforcement steel mold 12, so as to stabilize the position of the reinforcement steel mold 12 during the welding of the reinforcement steel mold 12.

[0050] As Figure 5 and Figure 7 shown, a fixing plate assembly 17 and an adjustment component 28 are also provided on the top surface of the rear end of the lower steel mold 10. No air extraction components such as an air cylinder 21 are provided on the suction cup holder 18 on the top surface of the rear end of the lower steel mold 10. The bottom surface of the connecting pipe 20 is connected and communicated with a manifold 36. The center of the manifold 36 corresponds to the center of the turntable 33. A rotatable air pipe joint is installed at the pipe orifice of the manifold 36. A connecting pipe 37 is connected between two rotatable air pipe joints corresponding to the front and back.

[0051] Specifically, the two connecting pipes 20 corresponding to the front and back are connected and communicated through the connecting pipe 37, so that when the fixing plate assembly 17 at the front end of the lower steel mold 10 is operated, the fixing plate assembly 17 at the rear end of the lower steel mold 10 operates synchronously. Furthermore, the two ends of the steel mold can be adsorbed without increasing the complexity of the operation, further improving the stability during welding, and when changing the position, they can operate together through the connection of the connecting pipe 37, thereby improving the efficiency.

[0052] As Figure 2 shown, front and rear covers 38 are threadedly connected to the front and rear end faces of the two side steel molds 11. Avoidance holes 40 are provided on the front faces of the front and rear covers 38 corresponding to the positions of the Z-shaped air ducts 16.

[0053] Specifically, through the setting of the front and rear covers 38, the gaps at the ends of the air ducts can be blocked, thereby avoiding unnecessary internal and external communication and ensuring that the internal air flow is only transmitted through the air ducts.

[0054] As Figure 2 and Figure 9As shown in the figure, since the steel mold is arranged in a zigzag shape with multiple internal bends, it is difficult to observe the internal state of the lower steel mold 10. During subsequent use, it is impossible to conveniently judge the internal state of the steel mold. Therefore, a detection component 39 for extracting air samples to detect impurities inside the steel mold is provided on the front and rear covers 38 and inside the lower steel mold 10. The detection component 39 includes an operating shaft 41. The front and rear covers 38 are provided with openings on the front surface, and the operating shaft 41 is rotatably installed in the openings. One end of the operating shaft 41 located inside the lower steel mold 10 is connected to a cam disc 42. The outer wall of the cam disc 42 is provided with several curved protrusions. One end of the operating shaft 41 located outside the lower steel mold 10 is connected to a handle 43. The front surface of the front and rear covers 38 is provided with an opening on one side of the operating shaft 41, and a sampling cylinder 46 is connected inside the opening. The surface of the sampling cylinder 46 located outside the lower steel mold 10 is connected with a transparent plate, and the transparent plate is made of a transparent material. The surface of the sampling cylinder 46 located inside the lower steel mold 10 is provided with sieve holes 45. The surfaces of the two side steel molds 11 located inside the lower steel mold 10 are connected with the sampling cylinder 46. The front and rear ends of the sampling cylinder 46 are close to the front and rear ends of the two side steel molds 11. The upper and lower surfaces of the sampling cylinder 46 are connected and communicated with a plurality of sampling tubes 47 at equal intervals. The bottom surface of the sample cylinder 44 is connected and communicated with an insertion tube 48. The front end of the sampling cylinder 46 is provided with an opening, and the insertion tube 48 is sleeved into it. The insertion tube 48 and the sampling cylinder 46 are sealed. The sealing treatment is a well-known prior art and can be achieved through raw material tapes, rubber rings, etc., and will not be elaborated here. It should be noted that the size of the air cylinder 21 in the attached drawing is a schematic size, and the specific size can be adjusted according to the nozzle size of the sampling tube 47, thereby increasing or decreasing the air extraction volume. The present application does not make specific limitations.

[0055] Specifically, the fixing plate assembly 17 is moved to the two ends of the lower steel mold 10, and the adjusting assembly 28 is rotated ninety degrees to allow the vertical negative pressure suction cups 19 to adsorb faces corresponding to the front and rear cover plates 38, and the upper negative pressure suction cups 19 are closed by the closing plugs 25. When the front and rear cover plates 38 are connected to the steel molds 11 on both sides, the cam plate 42 corresponds to the plug 22, and the negative pressure suction cups 19 are attached to the sample tube 44 and correspond to the sieve holes 45. Then, during the pouring of concrete or subsequent maintenance, the operating shaft 41 can be rotated by operating the handle 43 externally, and the curved protrusion of the cam plate 42 rotates and intermittently contacts the plug 22, thereby pushing the plug 22. When the plug 22 is separated, the plug 22 is reset by the reset spring, so that during the rotation of the cam plate 42, the plug 22 continuously reciprocates to allow the negative pressure suction cup 19 to continuously draw in air. The effect of the air drawn in by the negative pressure suction cup 19 acts on the sampling tube 46 through the sieve hole 45 and the sample tube 44, and finally the air is drawn in from the end of the sampling tube 47. The impurities in the steel mold can be injected into the sampling tube 46 along with the drawn air along the sampling tube 47, and then injected into the sample tube 44 through the sampling tube 46 and blocked by the sieve hole 45. The user can observe the composition of the drawn impurities, such as concrete, paint layer, rust, etc., through the sample tube 44 from the outside, and then judge the internal state of the lower steel mold 10 to judge whether risks need to be eliminated or maintenance is needed. The sampling tube 46 and the sampling tube 47 distributed on the side walls of the steel mold 11 on both sides can fully and comprehensively inspect the internal state of the steel mold.

[0056] A through-the-wall assembly method for radiation-proof one-time concrete pouring construction air duct comprises the following steps:

[0057] S1. Duct assembly;

[0058] S2, install in place;

[0059] Wherein S1 comprises the following steps:

[0060] S101. Build a BIM model through structural drawings, analyze the internal shape of the opening, the corner position and the size of each surface, and invert the processing size of the steel template. The lower steel template 10 and the upper cover plate 13 are both welded from three steel plates. The steel templates 11 on both sides and the reinforcement steel template 12 are directly cut and formed according to the processing size.

[0061] S102, weld the fixing clips 14 on the steel mold according to the position of the Z-shaped air duct 16, with a spacing of 200 mm;

[0062] S103, remove rust from the steel molds 11 on both sides, the reinforcing steel mold 12, the upper cover plate 13, the inner side of the fixing card 14 and the welds of the fixing card 14 and then apply anti-rust paint to prevent the internal corrosion of the steel plate;

[0063] S104. Connect the position - adjusting component 28 on the lower - layer steel form 10 according to the preset position, install the fixing - plate component 17 on the position - adjusting component 28, and first assemble the lower - layer steel form 10, the two - side steel forms 11 and the strengthening steel form 12 by welding;

[0064] S105. According to the air - supply and exhaust requirements of the linear accelerator room, the sizes of the air - supply duct and the exhaust duct are both 500x250mm. The Z - shaped duct 16 sub - systems are pre - fabricated and processed respectively. The Z - shaped duct 16 is connected by angle - steel flanges. After installation, ventilation detection is carried out to check the airtightness of the joints and the air output;

[0065] S106. The insulation layer 15 is integrally coated with 30mm super - fine centrifugal glass wool and fixed with special insulation glue;

[0066] S107. The outside of the insulation layer 15 is protected with 0.5mm iron sheet to prevent the insulation layer 15 from being damaged and deformed during subsequent construction;

[0067] S108. Combine the pre - fabricated insulated ducts with the processed steel formwork according to the predetermined position and place them on both sides of the strengthening steel form 12 inside the lower - layer steel form 10;

[0068] S109. After the installation of the two Z - shaped ducts 16 is completed, install the upper cover plate 13. The lower - layer steel form 10, the two - side steel forms 11, the strengthening steel form 12 and the upper cover plate 13 are all welded with 12mm thick steel plates of the strengthening steel form. The welds are all full - welds to ensure that concrete will not penetrate into the inside of the steel formwork during concrete pouring. During the welding process, use the fixing - plate component 17 to increase the stability of the steel formwork, ensure the welding quality, and avoid the efficiency problems caused by the displacement and disassembly of the steel formwork;

[0069] Among them, the said S2 includes the following steps:

[0070] S201. First, bind the walls on both sides of the opening and the hidden beam at the lower part of the opening. After binding, set concrete protection pads;

[0071] S202. Install the steel formwork and the Z - shaped duct 16 assembly in place. After installation, set additional steel - bar protection top formwork bars to ensure that the steel formwork will not be displaced during concrete pouring;

[0072] S203. Set concrete protection pads above the steel formwork, bind the hidden beam at the upper part of the opening and the wall steel bars, and set upper - layer protection top formwork bars;

[0073] S204. After the steel - bar acceptance is completed, close the wall formwork. First, pour a small amount of concrete, and detect the internal state of the lower - layer steel form 10 through the detection component 39 to judge whether there is concrete penetration. When there is concrete penetration, remove the small amount of concrete and then repair the defects. When there is no concrete penetration, pour the subsequent concrete.

[0074] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which it pertains.

Claims

1. A disposable concrete casting construction air duct with radiation protection, characterized in that, It includes a lower steel mold (10), two side steel molds (11), a reinforcing steel mold (12) and an upper cover plate (13). The number of the side steel molds (11) is two and they are respectively welded to the left and right sides of the lower steel mold (10). The reinforcing steel mold (12) is welded in the middle of the lower steel mold (10). The upper cover plate (13) is welded on the tops of the side steel molds (11) and the reinforcing steel mold (12). A number of fixing clips (14) are welded on the inner sides of the lower steel mold (10), the side steel molds (11), the reinforcing steel mold (12) and the upper cover plate (13). Heat-insulating layers (15) are placed on the left and right sides of the reinforcing steel mold (12), and the heat-insulating layers (15) abut against the ends of the fixing clips (14). A Z-shaped air duct (16) is connected inside the heat-insulating layer (15). The Z-shaped air duct (16) is formed by connecting multiple air ducts in a Z shape through angle steel flanges. The lower steel mold (10), the side steel molds (11), the reinforcing steel mold (12), the upper cover plate (13) and the heat-insulating layer (15) are all in a Z shape. A fixing plate assembly (17) for fixing the steel mold to assist in improving the welding quality is arranged inside the lower steel mold (10). An adjusting component (28) for adjusting the position of the fixing plate assembly (17) to fix the reinforcing steel mold (12) is arranged on the lower steel mold (10). A detection component (39) for pumping air and sampling impurities inside the steel mold is arranged inside the lower steel mold (10).

2. The disposable concrete casting construction air duct with radiation protection according to claim 1, characterized in that, The fixing plate assembly (17) includes a suction cup frame (18). The suction cup frame (18) is arranged on the top surface at the front end of the lower steel mold (10). Holes are formed on the side surface and the top surface of the suction cup frame (18), and negative pressure suction cups (19) are installed in the holes. A connecting pipeline (20) is fixedly connected to the end of the suction cup frame (18). An interface connected to the negative pressure suction cup (19) is arranged on the outer wall of the connecting pipeline (20), and the negative pressure suction cup (19) is connected and communicated with the connecting pipeline (20). An air cylinder (21) is connected to the upper end of the suction cup frame (18). A hole is formed on the front surface of the air cylinder (21) and a plug column (22) is sleeved on the hole. A return spring abuts between the end of the plug column (22) and the inner wall of the air cylinder (21). A check valve one (23) is installed on one side of the air cylinder (21) corresponding to the connecting pipeline (20). The check valve one (23) is connected and communicated with the plug column (22). A check valve two (24) is installed on the rear side surface of the air cylinder (21). The check valve one (23) can allow air to flow into the inside of the air cylinder (21) unidirectionally, and the check valve two (24) can allow air to flow out of the air cylinder (21) unidirectionally. One end of the connecting pipeline (20) far away from the air cylinder (21) is connected with an exhaust plug (26). An opening is formed on one side of the exhaust plug (26) corresponding to the connecting pipeline (20). A hole is formed on the side surface of the exhaust plug (26) and an air rod (27) is sleeved on the hole. Both ends of the air rod (27) are communicated, and through holes are formed on the outer wall of the air rod (27) located outside the exhaust plug (26).

3. The disposable concrete pouring construction air duct for radiation protection according to claim 2, characterized in that, The positioning component (28) includes a slide rail (29). The slide rail (29) is connected to the front top surface of the lower steel mold (10). A long rectangular hole is formed on the top surface of the slide rail (29). Positioning grooves (30) are formed on the front and rear surfaces of the slide rail (29) at positions corresponding to the welding areas. A sliding frame (31) in the shape of a rectangular frame is sleeved on the outer side surface of the slide rail (29). Holes are formed on the front and rear surfaces of the sliding frame (31), and positioning pins (32) are sleeved in the holes. A rod body is connected to the end of the positioning pin (32). The positioning pin (32) is inserted into the positioning groove (30). A support spring is sleeved on the rod body of the positioning pin (32). A circular hole is formed on the top surface of the sliding frame (31), and a turntable (33) is rotatably connected in the circular hole. A limit post (34) is connected to the bottom surface of the turntable (33). The limit post (34) is sleeved in the rectangular hole of the sliding frame (31). A column (35) is connected to the outer edge of the top surface of the turntable (33). The top end of the column (35) is connected to the lower end of the suction cup frame (18).

4. The disposable concrete casting construction air duct for radiation protection according to claim 3, characterized in that, A fixing plate component (17) and a positioning component (28) are also provided on the rear top surface of the lower steel mold (10). No air extraction components such as an air cylinder (21) are provided on the suction cup frame (18) on the rear top surface of the lower steel mold (10). The bottom surface of the connecting pipe (20) is connected and communicated with a manifold (36). The center of the manifold (36) corresponds to the center of the turntable (33). A rotatable air pipe joint is installed at the pipe orifice of the manifold (36). A connecting pipe (37) is connected between two rotatable air pipe joints corresponding to the front and rear.

5. The disposable concrete pouring construction air duct for radiation protection according to claim 4, characterized in that, Front and rear covers (38) are threadedly connected to the front and rear end faces of the two side steel molds (11). Avoidance holes (40) are formed on the front faces of the front and rear covers (38) at positions corresponding to the Z-shaped air ducts (16).

6. A radiation-proof disposable concrete-cast construction air duct according to claim 5, characterized in that, The detection component (39) includes an operating shaft (41). A hole is formed on the front face of the front and rear covers (38), and the operating shaft (41) is rotatably installed in the hole. One end of the operating shaft (41) located inside the lower steel mold (10) is connected with a cam disc (42). A plurality of curved protrusions are provided on the outer wall of the cam disc (42). One end of the operating shaft (41) located outside the lower steel mold (10) is connected with a handle (43). A hole is formed on the front face of the front and rear covers (38) on one side of the operating shaft (41), and a sampling cylinder (46) is connected in the hole. A transparent plate is connected to the surface of the sampling cylinder (46) located outside the lower steel mold (10). A sieve hole (45) is formed on the surface of the sampling cylinder (46) located inside the lower steel mold (10). A sampling tube (48) is connected and communicated with the bottom surface of the sample cylinder (44).

7. A radiation-proof disposable concrete casting construction air duct according to claim 6, characterized in that, Sampling cylinders (46) are connected to the surfaces of the two side steel molds (11) located inside the lower steel mold (10). The front and rear ends of the sampling cylinders (46) are close to the front and rear ends of the two side steel molds (11). A plurality of sampling tubes (47) are connected and communicated with the upper and lower surfaces of the sampling cylinders (46) at equal intervals. The front end of the sampling cylinder (46) is provided with a hole, and the sampling tube (48) is sleeved therein.

8. A wall-piercing assembly method for a radiation-proof disposable concrete-cast construction air duct, characterized in that, Including the following steps: S1. Air duct assembly; S2. Installation in place; Wherein the S1 includes the following steps: S101. Construct a BIM model through the structural drawings, analyze the internal shape of the openings, the corner positions, and the dimensions of each surface, and reverse-deduce the processing dimensions of the steel formwork. The lower steel formwork (10) and the upper cover plate (13) are both formed by welding three steel plates. The two-side steel formwork (11) and the strengthening steel formwork (12) are directly cut into shape according to the processing dimensions. S102. Weld and fix the clamps (14) on the steel formwork according to the position of the Z-shaped air duct (16), with a spacing of 200 mm. S103. Remove rust from the inner sides of the two-side steel formwork (11), the strengthening steel formwork (12), the upper cover plate (13), and the clamps (14) and the welds of the clamps (14), and apply anti-rust paint to prevent internal rusting of the steel plates. S104. Connect the position-adjusting components (28) on the lower steel formwork (10) according to the preset positions, install the fixing plate components (17) on the position-adjusting components (28), and first assemble the lower steel formwork (10), the two-side steel formwork (11), and the strengthening steel formwork (12) by welding. S105. According to the air supply and exhaust requirements of the linear accelerator room, the dimensions of the air supply duct and the exhaust duct are both 500x250 mm. The Z-shaped air ducts (16) are prefabricated and processed separately for each system. The Z-shaped air ducts (16) are connected by angle steel flanges. After installation, ventilation detection is carried out to check the airtightness of the joints and the air output. S106. The insulation layer (15) is integrally coated with 30 mm ultra-fine centrifugal glass wool and fixed with special insulation glue. S107. The outside of the insulation layer (15) is protected with 0.5 mm iron sheet to prevent damage and deformation of the insulation layer (15) during subsequent construction. S108. Combine the prefabricated insulated air ducts with the processed steel formwork at the predetermined positions and place them on both sides of the strengthening steel formwork (12) inside the lower steel formwork (10). S109. After the installation of the two Z-shaped air ducts (16) is completed, install the upper cover plate (13). The lower steel formwork (10), the two-side steel formwork (11), the strengthening steel formwork (12), and the upper cover plate (13) are all welded with 12 mm thick strengthening steel plates, and the welds are all full welds to ensure that concrete will not seep into the inside of the steel formwork during concrete pouring. During the welding process, use the fixing plate components to increase the stability of the steel formwork, ensure the welding quality, and avoid the efficiency problems caused by the need for disassembly and assembly due to the offset of the steel formwork. Wherein the said S2 includes the following steps: S201. First, bind the walls on both sides of the opening and the hidden beam at the lower part of the opening. After binding, set concrete protection pads. S202. Install the combined steel formwork and Z-shaped air duct (16) in place. After installation, set additional steel bar protection top formwork rods to ensure that the steel formwork does not shift during concrete pouring. S203. Set concrete protection pads above the steel formwork, bind the hidden beam at the upper part of the opening and the wall steel bars, and set the upper protection top formwork rods. S204. After the steel bar acceptance is completed, close the wall formwork. First, pour a small amount of concrete, and detect the internal state of the lower steel formwork (10) through the detection component (39) to judge whether there is concrete seepage. When there is concrete seepage, remove the small amount of concrete and repair the defects. When there is no concrete seepage, pour the subsequent concrete.

Images