Modular air shield dam

Abstract

The present invention discloses a modular air shield dam, which belongs to the technical field of water conservancy and hydropower facilities. The modular air shield dam is a flood prevention and water retaining facility set up in rivers, estuaries, reservoirs, garages, subway entrances, etc. It includes an inflation system, which is composed of a screw compressor, a Roots blower, an air storage tank, a filter and a cold dryer; a manual control conveying system, which is composed of a main pipeline, a ball valve, a bus, a branch pipeline, a proportional valve and a pressure gauge; an automatic control system, which is provided with a PLC, a pressure sensor, a water level sensor, an angle meter, a video monitor; a remote monitoring system; a dam body, which includes a steel shield, a rubber airbag, a main anchoring system, an ice removal and anti-icing device and accessories. The present invention solves the bottleneck problem of the traditional movable dam type, is easy to install and operate, has good real-time performance, a low failure rate, strong practicality, a long service life, good landscape effect, and is ecologically and environmentally friendly, and has a good water retaining and flood prevention effect; the production process is simple.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy and hydropower facilities and relates to a modular air shield dam, specifically a flood control and water retaining facility arranged at a river, an estuary, a reservoir, a garage, a subway entrance and the like. Background Art

[0002] The air shield dam inherits the essence of the traditional movable dam type and overcomes the bottleneck problem of the traditional movable dam type. It has the characteristics of simple structure, simple and quick construction, installation, use and maintenance; outstanding flood control and flood crossing capabilities, safe and reliable operation; continuously controllable water height and operating status; stronger pollution cleaning and silt removal capabilities; easy and agile lifting and lowering, simple operation and management, and unattended operation; extremely long service life and high comprehensive benefits; strong earthquake resistance and high adaptability to the foundation; good landscape effects and ecological and environmental friendliness.

[0003] Compared with other types of dams, air shield dams have obvious advantages and have been widely recognized and favored in the industry. Various production technologies and products are constantly emerging.

[0004] In July 1995, the U.S. invention patent US005713699A disclosed an "overflow shield gate system and its inflatable bag", the core technology of which was "enhanced rubber dam bag (with a pressure resistance of up to 0.5MPa)".

[0005] In December 2010, the inventor's publication number CN 102086637 B disclosed "High-pressure seamless large rubber airbag and its production process", the core technology of which is "the composition is an EPDM outer cover rubber with excellent weather resistance, a skeleton layer composed of at least four layers (even number) of continuous high-strength cords staggered at 90 degrees to each other at an angle of 46-56 degrees, a middle rubber layer composed of chloroprene and natural rubber, and an inner rubber layer composed of butyl rubber with excellent air tightness. Its production process flow is as follows: (1) plasticizing, compounding, mixing and sheeting of raw rubber; (2) dipping and coating of high-strength cords; (3) pre-forming by drum rotation; weaving open-end fibers to make their joints continuous and pasting rubber sheets at the same time; (4) one-time integral molding; (5) overall vulcanization; (6) hot vulcanization of edges and corners for reinforcement".

[0006] In April 2012, the invention patent with publication number CN 102628260 B disclosed a "flat plate vulcanizing machine vulcanization processing method for a dam airbag", the core technology of which is "comprising a rubber inner layer (1) and a rubber outer layer (2), a skeleton layer (3) is sandwiched between the two, and the three are combined into an integrated structure through vulcanization technology, the rubber inner layer (1) and the rubber outer layer (2) comprise a cord fabric and a rubber layer, the cord fabric and the rubber layer are tightly bonded together through calendering technology to form a skeleton layer (3), the cord wires (5) of the odd-numbered and even-numbered cord fabrics have opposite inclination angles, the inclination angle of the cord wires (5) is 40-60 degrees, and the cord fabric is a polyester cord fabric or a nylon cord fabric".

[0007] In November 2017, the invention patent with publication number CN 107761672 A disclosed an "air shield dam airbag and its processing technology", the core technology of which is "including an airbag body, at least two layers of curtain fabric are arranged in the airbag body, a strip anchoring part is provided on one side of the airbag body, the anchoring part is vulcanized into one with the airbag, and a number of anchoring holes are evenly distributed on the anchoring part".

[0008] The above-mentioned air shield dam can generally play a role in water blocking and flood prevention, but through practical application, it is found that there are the following shortcomings:

[0009] 1. The process of using a flat-plate vulcanizer to produce rubber airbags, the core components of air shield dams, causes high temperature and pressure to cause thermal aging of the skeleton fiber and rubber materials and splitting of the fibers, which reduces the material strength and shortens the product life. This phenomenon is more serious when the airbag is large in size and vulcanized in sections. At the same time, the flat-plate vulcanizer consumes and loses a lot of heat energy, and the operating cost is high.

[0010] 2. The fiber cloth in the structure of the reinforced skeleton fiber of the airbag is discontinuous and is bonded or overlapped by rubber or adhesive, resulting in poor aging resistance of the overall airbag and greatly shortened service life.

[0011] 3. The reinforced skeleton fiber material of the airbag is made of curtain cloth or canvas, which makes the interlayer bonding poor, easy to delaminate, and the airbag has poor flexibility, and the operating pressure increases.

[0012] 4. The ratio of the length to the width (water retaining height) of the rubber airbag is less than 2.5, so that the force-bearing area of ​​the rubber airbag is small and the pressure is strong.

[0013] 5. When the water retaining height is higher than 2.5 meters, flat upper and lower pressure plates are used. In order to allow the main anchor bolt rod to pass through, it is necessary to perforate the edge of the airbag. Under high-strength and high-pressure working conditions, the airbag is easily torn, causing accidents and dangers, and poor reliability and safety.

[0014] 6. Each airbag is not independently controlled, resulting in poor real-time performance, causing asynchrony during operation, and the overall air shield dam is not in a straight line.

[0015] 7. Under high altitude or strong sunlight conditions, the weather resistance and UV resistance of carbon steel anti-corrosion treatment are insufficient.

[0016] 8. The construction of a simple single main anchoring form and embedded bolts is cumbersome and complicated, requiring a second phase of concrete pouring. It is difficult to ensure the precise positioning of the main bolts, and the human factor has a great influence and the labor intensity is high.

[0017] 9. Airbag leakage or slow deflation becomes the norm. Summary of the invention

[0018] In view of the problems existing in the prior art, the purpose of the present invention is to provide a modular air shield dam to solve the bottleneck problems of the above-mentioned existing air shield dams. It is easy to install and operate, has good real-time performance, low failure rate, strong practicality, long service life, good landscape effect, ecological and environmental friendliness, good water retaining and flood prevention effects; and the production process is simple.

[0019] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the modular air shield dam is a flood control and water retaining facility arranged in rivers, estuaries, reservoirs, garages, subway entrances, etc.

[0020] The modular air shield dam comprises: an inflation system 1, which is composed of a screw compressor 11, a Roots blower 12, an air storage tank 13, a filter 14 and a cold dryer 15; a manually controlled conveying system 2, which is composed of a main pipeline 21, a ball valve 22, a bus 23, a branch pipeline 23a, a proportional valve 24 and a pressure gauge 25; an automatic control system 3, which is provided with a PLC, a pressure sensor 31, a water level sensor 32, an angle meter 33, and a video monitor 34; a remote monitoring system 4; a dam body 5, which is composed of a steel shield 51, a rubber airbag 52, a main anchoring system 53, a wedge-shaped pressure plate 54, a flexible hinge cover plate 55, an intermediate stop seal 56, a side stop seal 57, a suppression belt 58, and a side pier plate 59; a deicing and anti-icing device 6;

[0021] The modular gas shield dam, the bus 23 of the manual control conveying system 2 is connected to the main pipeline 21, and is composed of a branch pipeline 23a, a ball valve 22, a pressure sensor 31, a proportional valve 24, and a pressure gauge 25;

[0022] In the modular air shield dam, the water level sensor 32 is a radar water level sensor L2 arranged on the water surface, or an underwater water level sensor L1;

[0023] The modular gas shield dam, the automatic control system 3 and the remote monitoring system 4 / SCADA interactive feedback, the pressure sensor 31, the water level sensor 32, the angle meter 33, the video monitor 34 are connected and monitored by the PLC, HMI and shielded signal line, and the pressure and flow of the gas supply system 1 are controlled and adjusted;

[0024] In the modular gas shield dam, the remote monitoring system 4 / SCADA is connected to the PLC of the automatic control system 3 for mutual feedback to realize remote monitoring;

[0025] The modular air shield dam, the steel shield 51 structure includes: a steel shield main board 51a, a rib plate 51b, a wave-breaking plate 51c, a top reinforcement tube 51d and a shield plate shaft 51e;

[0026] In the modular air shield dam, the rubber airbag 52 is composed of an inner rubber sheet 52a, a middle rubber sheet 52b, a skeleton fiber cord 52c and an outer weather-resistant rubber sheet 52d;

[0027] The modular gas shield dam, the main anchoring system 53 includes: a main anchoring bolt row 53a, a root embedded part 53b, a wedge embedded part 53c, a main anchoring casting positioning template 53d, a wedge-shaped pressure plate 54, and a flexible hinge cover plate 55;

[0028] In the modular gas shield dam, the main anchor bolt row 53a is composed of a plurality of screws, an anchor row frame and nuts;

[0029] In the modular gas shield dam, the metal screws and nuts of the main anchor bolt row 53a are made of 316L or 304 stainless steel or carbon steel, and the anchor row frame is made of carbon steel;

[0030] In the modular air shield dam, the anchoring of the air shield dam with a water retaining height below 2.5 meters can be flat upper and lower pressure plates, and the anchoring of the air shield dam with a water retaining height above 2.5 meters can be wedge-shaped pressure plates 54.

[0031] Furthermore, the air shield dam is composed of an array of air shield dam module units according to needs, and the air shield dam module unit includes: a single steel shield 51, a single rubber airbag 52, a branch pipe 23a of the bus 23 connected in series with a ball valve 22, a pressure sensor 31, a proportional valve 24, a pressure gauge 25, and an angle meter 33.

[0032] Furthermore, the bus 23 is made of welded 304 stainless steel pipe; the corresponding number of branch pipes 23a is set according to the number of units of the rubber airbag 52; the pressure sensor 31, the proportional valve 24, and the pressure gauge 25 are connected in series with the ball valve 22 to form a single branch pipe 23a, so as to realize manual and automatic modular independent control; all the single branch pipes 23a are then connected to the main pipe 21 to form a whole.

[0033] Furthermore, the steel shield 51 is made of 304 stainless steel or 316L stainless steel or heavy-duty anti-corrosion carbon steel.

[0034] Furthermore, the anti-corrosion method of the heavy-duty anti-corrosion carbon steel shield is: hot-dip galvanizing layer + epoxy zinc-rich primer + epoxy micaceous iron intermediate paint + fluorocarbon paint topcoat.

[0035] Furthermore, the length of a single rubber airbag 52 of the air shield dam module unit is less than or equal to 10 meters, and the ratio of the length to the width (water retaining height) is greater than 2.5.

[0036] Furthermore, the material of the outer weather-resistant film (52d) of the rubber airbag 52 is EPDM rubber; 3 to 5 parts of tetrapod-shaped zinc oxide whiskers and 5 to 7 parts of rutile titanium dioxide are added to 100 parts of the EPDM rubber mix.

[0037] Furthermore, the production process and equipment of the rubber airbag 52 is an autoclave production process method, and the autoclave has hot air pressure and the product has vacuum negative pressure in the mold.

[0038] Furthermore, the important components of the deicing and anti-icing device 6 are the deicing air pipe 6a, the mushroom-shaped one-way elastic aeration head 6b, and the aeration head base 6c. The deicing air pipe 6a is also equipped with a ball valve 22, a proportional valve 24, a pressure gauge 25 and a pressure sensor 31; the mushroom-shaped one-way elastic aeration head 6b has a one-way aeration function.

[0039] Furthermore, the method for preparing the rubber airbag 52 comprises the following steps:

[0040] Step 1: Wrap the inner film 52a of the rubber airbag 52 on the mold according to the size of the product mold, and then lay the first layer of the middle film 52b on it;

[0041] Step 2: Lay the first layer of skeleton fiber cords 52c on the first layer of film 52b at an angle of 45 degrees;

[0042] Step 3: Lay the second layer of middle film 52b, and then lay the second layer of skeleton fiber cord 52c thereon in a 90-degree cross pattern;

[0043] Step 4: Repeat step 3 to lay the middle film 52b and the skeleton fiber cord 52c until the design requirements are met, and then lay the last layer of the middle film 52b;

[0044] Step 5: Add 3-5 parts of tetrapod zinc oxide whiskers and 5-7 parts of rutile titanium dioxide to 100 parts of EPDM rubber mix, and roll it into an outer layer of weather-resistant film 52d; spread it on the last layer of middle film 52b;

[0045] Step 6: Each time the rubber is laid, it needs to be rolled with a rolling roller to obtain a pre-shaped part of the rubber airbag 52, and then cold-pressed into an embryo of the pre-shaped composite rubber airbag 52;

[0046] Step 7: Place the embryo of the pre-shaped composite rubber airbag 52 into an elastic outer membrane bag, evacuate to -0.090MPa, and send it into an autoclave with a hot air pressure of 0.8MP for 30 to 40min / 140℃. The small airbag can be placed in a metal mold and directly vulcanized on a flat vulcanizer for 30 to 40min / 150℃ to make the rubber airbag 52.

[0047] Furthermore, the mushroom-shaped one-way elastic aeration head 6b is a micro-arc fluororubber diaphragm, and its preparation method includes the following steps:

[0048] Step 1: Add 2 parts of tetrapod-shaped zinc oxide whiskers to 100 parts of fluororubber compound;

[0049] Step 2: Cut the film according to the product mold size;

[0050] Step 3: Preform the prepared film and skeleton fiber cloth into a one-cloth-two-rubber or two-cloth-three-rubber fiber-reinforced rubber composite tape sheet according to the size of the product mold and the spacing between the rubber layer and the cloth layer. Each time it is laid, it needs to be rolled with a rolling roller and then cold-pressed into a predetermined composite tape sheet;

[0051] Step 4: Place the pre-shaped composite rubber sheet into a metal mold and vulcanize it directly on a flat vulcanizer to prepare a slightly curved rubber membrane of rubber cloth;

[0052] Step 5: Use a steel needle with a diameter of 60 to 100 microns, which is thick at the top and thin at the bottom, to punch holes in the slightly curved rubber diaphragm from the inside out to form micron-level aeration micropores.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] 1. The modular air shield dam of the present invention has strong functionality and reliability, is easy to install and operate, has good water retaining and flood prevention performance, and is suitable for various complex working conditions such as rivers, estuaries, reservoirs, garages, and subway entrances, solving the bottleneck problem of traditional movable dams;

[0055] 2. The airbag production process uses autoclaves, and the hot air pressure and vacuum negative pressure of the product in the mold improve the density, integrity, quality and service life of the airbag product, and eliminate fiber splitting and thermal aging; reduce the vulcanization temperature and time, and improve the utilization rate of thermal energy;

[0056] 3. The cocoon-like structure of the reinforced skeleton fiber of the airbag truly realizes the continuity of the skeleton fiber, ensures the strength and aging resistance of the overall airbag and increases the service life to more than 50 years;

[0057] 4. The cord is used as the skeleton material to improve the flexibility of the airbag and reduce the operating pressure; the rubber layers on both sides of the fiber are "hand-in-hand" to ensure the affinity between the layers and improve the strength and aging resistance of the overall airbag;

[0058] 5. The combination of the functional layer of the rubber airbag and the outer weather-resistant film material improves its aging resistance and service life, and ensures the flexibility of the airbag and reduces the operating pressure;

[0059] 6. The ratio of the length to width (water retaining height) of the rubber airbag is limited to above 2.5, which reduces the operating pressure of the air shield dam and improves the reliability and safety of the air shield dam operation;

[0060] 7. The non-perforated wedge-shaped anchoring method is adopted to ensure the reliability and safety of the air shield dam under high-strength and high-pressure working conditions;

[0061] 8. Each airbag is independently controlled in real time, ensuring the consistency of operation of each modular unit and the "undifferentiated" operation of the entire air shield dam;

[0062] 9. The surface anti-corrosion design and application of carbon steel shield ensures the heavy-duty anti-corrosion, aging resistance and UV resistance of the shield, which is especially suitable for working conditions with harsh anti-corrosion requirements such as high altitude or strong sunshine;

[0063] 10. The anchoring system of bolt anchor row, casting formwork, root embedded parts and wedge embedded parts ensures the precise positioning of the main bolts, omits the second phase of concrete pouring, and reduces the cumbersome complexity of construction, the influence of human factors and labor intensity;

[0064] 11. The radar water level sensor on the water surface is used to facilitate installation and maintenance, and effectively monitor the operation of the gas shield dam;

[0065] 12. Use de-icing and anti-icing devices to prevent the damage of ice cover static pressure and drifting ice to the air shield dam in cold seasons;

[0066] 13. It combines multiple beneficial effects, eliminates air bag leakage or slow air release, and improves the overall stability, reliability and safety of the air shield dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a schematic diagram of the overall structure of the modular air shield dam of the present invention;

[0068] Figure 2 It is a schematic diagram of the structure of the anchoring system of the modular air shield dam in the present invention;

[0069] Figure 3 It is a schematic diagram of the composition structure and operation of the modular air shield dam body in the present invention;

[0070] Figure 4 It is a schematic diagram of the air bag structure of the modular air shield dam in the present invention;

[0071] Figure 5 It is a schematic diagram of the skeleton fiber structure of the modular air shield dam airbag in the present invention;

[0072] Figure 6 It is a schematic diagram of the steel shield structure of the modular air shield dam in the present invention;

[0073] Figure 7 It is a schematic diagram of the busbar structure of the modular gas shield dam in the present invention;

[0074] Figure 8 It is a schematic diagram of the composition structure of the modular gas shield dam automatic control system and SCADA in the present invention;

[0075] Fig. 9 It is a schematic diagram of the structure of the modular air shield dam deicing and anti-icing device in the present invention.

[0076] In the figure: 1- inflation system, 11- screw compressor, 12- roots blower, 13- air storage tank, 14- filter, 15- cold dryer; 2- manual control conveying system, 21- main pipeline, 22- ball valve, 23- bus, 23a- branch pipeline, 24- proportional valve, 25- pressure gauge; 3, automatic control system, 31- pressure sensor, 32- water level sensor (L2- radar water level sensor, L1- underwater water level sensor), 33- angle meter, 34- video monitor; 4- remote monitoring system; 5- dam body, 51- steel shield, 51a- steel shield mainboard, 51b- rib plate, 51c- wave breaking plate, 51d- rib plate, 51e- rib plate, 51f- rib plate, 51f- rib plate, 51g- rib plate, 51h- rib plate, 51h- rib plate, 51h- rib plate, 51h- rib plate, 51c- rib plate, 51d- rib plate, 51e- rib plate, 51f- rib plate, 51f- rib plate, 51g- rib plate, 51h ... 1d-top reinforcement tube, 51e-shield shaft, 51f-steel shield fixing bolt, 52-rubber airbag, 52a-inner rubber film, 52b-middle rubber film, 52c-skeleton fiber cord, 52d-outer weather-resistant rubber film, 53-main anchoring system, 53a-main anchoring bolt row, 53b-root embedded parts, 53c-wedge embedded parts, 53d-main anchoring casting positioning template, 54-wedge pressure plate, 55-flexible hinge cover plate, 56-interval stop seal, 57-side stop seal, 58-suppression belt, 59-side pier plate; 6-deicing and anti-icing device, 6a-deicing air pipe, 6b-mushroom-type unidirectional elastic aeration head, 6c-aeration head base. DETAILED DESCRIPTION

[0077] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0078] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0079] A modular air shield dam, wherein the anti-icing device is a flood control and water retaining facility arranged at a river channel, an estuary, a reservoir, a garage, a subway entrance, etc., which solves the bottleneck problem of the existing air shield dam.

[0080] A modular air shield dam comprises: an inflation system 1, which is composed of a screw compressor 11, a Roots blower 12, an air storage tank 13, a filter 14 and a cold dryer 15; a manually controlled conveying system 2, which is composed of a main pipeline 21, a ball valve 22, a bus 23, a branch pipeline 23a, a proportional valve 24 and a pressure gauge 25; an automatic control system 3, which is provided with a PLC, a pressure sensor 31, a water level sensor 32, an angle meter 33, and a video monitor 34; a remote monitoring system 4; a dam body 5, which comprises a steel shield 51, a rubber airbag 52, a main anchoring system 53, a wedge-shaped pressure plate 54, a flexible hinge cover plate 55, an intermediate stop seal 56, a side stop seal 57, a suppression belt 58, and a side pier plate 59; and a deicing and anti-icing device 6.

[0081] The air shield dam is composed of an array of air shield dam module units according to the requirements. The air shield dam module unit includes: a single steel shield 51, a single rubber airbag 52, a branch pipe 23a of the bus 23 connected in series with a ball valve 22, a pressure sensor 31, a proportional valve 24, a pressure gauge 25, and an angle meter 33.

[0082] The bus 23 is made of welded 304 stainless steel pipes; the corresponding number of branch pipes 23a is set according to the number of units of the rubber airbag 52; the pressure sensor 31, the proportional valve 24, and the pressure gauge 25 are connected in series with the ball valve 22 to form a single branch pipe 23a, realizing manual and automatic modular independent control; all single branch pipes 23a are then connected to the main pipe 21 to form a whole.

[0083] The bus 23 of the manual control delivery system 2 is connected to the main pipeline 21 , and is composed of a branch pipeline 23 a , a ball valve 22 , a pressure sensor 31 , a proportional valve 24 , and a pressure gauge 25 .

[0084] The water level sensor 32 is a radar water level sensor L2 disposed on the water surface, or an underwater water level sensor L1.

[0085] The automatic control system 3 and the remote monitoring system 4 / SCADA interact with each other for feedback. The pressure sensor 31, the water level sensor 32, the angle meter 33, and the video monitor 34 are connected and monitored by the PLC, HMI, and shielded signal lines to control and adjust the pressure and flow of the gas supply of the gas supply system 1.

[0086] The remote monitoring system 4 is connected to the PLC of the automatic control system 3 for mutual feedback to realize remote monitoring.

[0087] The structure of the steel shield 51 includes: a steel shield main board 51a, ribs 51b, wave-breaking plates 51c, a top reinforcement tube 51d and a shield shaft 51e.

[0088] The material of steel shield 51 is 304 stainless steel or 316L stainless steel or heavy corrosion resistant carbon steel.

[0089] Anti-corrosion method of heavy-duty anti-corrosion carbon steel shield: hot-dip galvanizing layer + epoxy zinc-rich primer + epoxy micaceous iron intermediate paint + fluorocarbon paint topcoat.

[0090] The rubber airbag 52 is composed of an inner rubber sheet 52a, a middle rubber sheet 52b, a skeleton fiber cord 52c and an outer weather-resistant rubber sheet 52d.

[0091] The length of a single rubber airbag 52 of the air shield dam module unit is less than or equal to 10 meters, and the ratio of the length to the width (water retaining height) is greater than 2.5.

[0092] The outer weather-resistant film 52d of the rubber airbag 52 is EPDM rubber; 3 to 5 parts of tetrapod-shaped zinc oxide whiskers and 5 to 7 parts of rutile titanium dioxide are added to 100 parts of the EPDM rubber mix.

[0093] The main anchoring system 53 includes: a main anchoring bolt row 53a, a root embedded part 53b, a wedge embedded part 53c, a main anchoring casting positioning template 53d, a wedge-shaped pressure plate 54, and a flexible hinge cover plate 55.

[0094] The main anchor bolt row 53a is composed of a plurality of screw rods, an anchor row frame and nuts.

[0095] The metal screws and nuts are made of 316L or 304 stainless steel or carbon steel, and the anchor row frame is made of carbon steel.

[0096] The anchoring of the air shield dam of the present invention can be flat upper and lower pressure plates for air shield dams with a water retaining height below 2.5 meters, and wedge-shaped pressure plates 54 for air shield dams with a water retaining height above 2.5 meters.

[0097] The production process and equipment of the rubber airbag 52 is an autoclave production process method, and the autoclave has hot air pressure and the product has vacuum negative pressure in the mold.

[0098] The method for preparing the rubber airbag 52 comprises the following steps:

[0099] Step 1: Wrap the inner film 52a of the rubber airbag 52 on the mold according to the size of the product mold, and then lay the first layer of the middle film 52b on it;

[0100] Step 2: Lay the first layer of skeleton fiber cords 52c on the first layer of film 52b at an angle of 45 degrees;

[0101] Step 3: Lay the second layer of middle film 52b, and then lay the second layer of skeleton fiber cord 52c thereon in a 90-degree cross pattern;

[0102] Step 4: Repeat step 3 to lay the middle film 52b and the skeleton fiber cord 52c until the design requirements are met, and then lay the last layer of the middle film 52b;

[0103] Step 5: Add 3-5 parts of tetrapod zinc oxide whiskers and 5-7 parts of rutile titanium dioxide to 100 parts of EPDM rubber mix, and roll it into an outer layer of weather-resistant film 52d; spread it on the last layer of middle film 52b;

[0104] Step 6: Each time the rubber is laid, it needs to be rolled with a rolling roller to obtain a pre-shaped part of the rubber airbag 52, and then cold-pressed into an embryo of the pre-shaped composite rubber airbag 52;

[0105] Step 7: Place the embryo of the predetermined composite rubber airbag 52 into an elastic outer membrane bag, evacuate to -0.090MPa, and send it into an autoclave with hot air pressure of 0.8MPa for vulcanization (140℃×60min). The small airbag can be placed in a metal mold and directly vulcanized on a flat vulcanizer (150℃×60min) to make the rubber airbag 52.

[0106] In the manufacturing scheme of the rubber airbag 52 material (inner rubber sheet 52a, middle rubber sheet 52b and weather-resistant outer rubber sheet 52d) of the present invention, the physical and mechanical properties of the vulcanized rubber of the product are shown in Table 1, wherein the service life of the weather-resistant outer rubber sheet 52d of the rubber airbag is subjected to accelerated aging tests at 70°C, 80°C and 90°C in hot air according to the international standard ISO 11346:1997, and its service life at 23°C is extrapolated to be 79.3 years (with a safety factor of 2) based on the tensile properties.

[0107] Table 1 Vulcanized rubber properties

[0108]

[0109] The weather-resistant outer layer film material of the present invention is EPDM compatible, and the food hygiene performance of the product is tested according to the national standard GB4806.11-2016 "Food Contact Rubber Materials and Products" as shown in Table 2:

[0110] Table 2 Food Hygiene Inspection of Rubber Materials

[0111]

[0112] The physical and mechanical properties of the composite materials made of rubber and fiber reinforced skeleton are shown in Table 3:

[0113] Table 3 Physical properties of composite adhesive coated fabric

[0114]

[0115] The rubber material composition of the rubber airbag 52 of the present invention has excellent performance, the production process is simple to operate, and can meet the one-time molding and vulcanization of weather-resistant, aging-resistant, high-strength rubber materials and rubber parts or other rubber products for water conservancy projects, and has good production stability; the rubber products produced have high compressive strength (the operating pressure reaches above 1.5MPa), a service life of more than 50 years, and environmental hygiene indicators exceed national standards by 4 orders of magnitude; it is particularly suitable for the production and application of key parts airbags of air shield dams and rubber dams in water conservancy flood control projects.

[0116] The present invention relates to a method for testing the rubber airbag 52 material:

[0117] GB / T 2941-2006 Standard temperature, humidity and time for environmental conditioning and testing of rubber specimens (eqv ISO23529:2004);

[0118] GB / T 528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber" (eqv ISO 37:2005);

[0119] GB / T 529-2008 "Determination of tear strength of vulcanized rubber or thermoplastic rubber (trouser-shaped, right-angled and crescent-shaped test specimens)" (eqv ISO 34:2004);

[0120] GB / T 531.1-2008 Rubber pocket hardness tester indentation hardness test method (idt ISO 7619:2004);

[0121] GB / T 3512-2014 "Hot air accelerated aging and heat resistance tests for vulcanized rubber or thermoplastic rubber" (neq ISO188:2011);

[0122] GB / T 7759-2015 "Determination of compression set of vulcanized rubber and thermoplastic rubber at room temperature, high temperature and low temperature" (eqv ISO 815:2008);

[0123] GB / T 7762-2014 "Vulcanized rubber ozone aging resistance test static tensile test method" (neq ISO 1431 / 1: 2004);

[0124] GB / T 9865.1-1996 "Preparation of samples and test pieces of vulcanized rubber or thermoplastic rubber Part 1: Physical testing (idt ISO 4461-1: 1993);

[0125] GB / T 15256-2014 "Determination of low temperature brittleness of vulcanized rubber (multiple specimen method)" (eqv ISO 812:2011;

[0126] ISO 11346: 2014 "Rubber, vulcanized or thermoplastic-Estimation of life-time and maximum temperature of use from an Arrhenius plot";

[0127] GB / T 7755.1-2018 "Determination of air permeability of vulcanized rubber or thermoplastic rubber Part 1: Pressure difference method" (eqvISO 2782-1:2012, NEQ)

[0128] GB 4806.11-2016 "Food Contact Rubber Materials and Products";

[0129] GB / T 532-2008 "Determination of adhesion strength between vulcanized rubber and fabrics (neq ISO 36:2005);

[0130] HG / T 2580-2008 "Rubber or plastic coated fabrics - Determination of tensile strength and elongation at break" (eqv ISO1421:1977).

[0131] The present invention relates to a carbon steel shield 51 and other carbon steel surface heavy corrosion protection solutions:

[0132] The surface heavy corrosion protection scheme of carbon steel is shown in Table 4, and the corrosion protection performance is shown in Table 5:

[0133] Table 4 Heavy surface corrosion protection scheme for carbon steel

[0134] coating Product Name Dry film thickness DFT: μm Note Thermal Spraying Zinc powder 80～120 Primer Epoxy zinc rich 40～80 Middle coating Epoxy mica iron intermediate paint 60～80 Glass flakes Topcoat Fluorocarbon topcoat 40～60 Super UV resistance

[0135] Table 5 Anticorrosion performance of coatings

[0136]

[0137] The present invention relates to a test method for surface heavy corrosion protection of carbon steel shield 51 and other carbon steels:

[0138] GB / T 9793-2012 Thermal spraying of metals and other inorganic coatings - zinc, aluminium and their alloys (eqv ISO 2063:2005IDT);

[0139] HG / T 3668-2009 "Zinc-rich primer" (eqv JIS K 5552:2002ジンクリッチプライマー);

[0140] HG / T 4340-2012 "Epoxy Micaceous Iron Intermediate Paint" (eqv JIS K 5555:2002 Epoxy Micaceous Iron Oxidation Coating);

[0141] HG / T 3792-2005 "Cross-linked fluororesin coatings" (eqv JIS K 5659:2008 Weathering resistant coatings for steel structures);

[0142] SL 105-2007 "Code for Corrosion Protection of Hydraulic Metal Structures".

[0143] The modular gas shield dam of the present invention is installed and applied on site as follows:

[0144] 1.Indoor installation in control room

[0145] 1) See Appendix Figure 1 Install the inflation system 1 into the control room;

[0146] 2) See Appendix Figure 1 and attached Figure 7 The bus 23 of the manual control delivery system 2 and the deicing air pipe 6a of the deicing and anti-icing device 6 are connected to the main pipeline 21. The bus 23 includes a parallel array of branch pipelines 23a, and the branch pipelines 23a are connected in series with a ball valve 22, a pressure sensor 31, a proportional valve 24, and a pressure gauge 25; the bus 23 is installed in a so-called manual control cabinet; the series components of the deicing and anti-icing device 6, the ball valve 22, the proportional valve 24, the pressure gauge 25 and the pressure sensor 31 are installed at the same time;

[0147] 3) See Appendix Figure 1 and attached Figure 8 The logic control program of the automatic control system 3 and the remote monitoring system 4 / SCADA are assembled into a control cabinet, which is called an automatic control cabinet, and the automatic control cabinet is installed in the control room.

[0148] 2. Installation outside the control room

[0149] 1) See Appendix Figure 1 and attached Figure 2 The main anchoring template 53d, the root embedded parts 53b, the wedge embedded parts 53c, the main anchor bolt row 53a and the steel cage are set together, and the main anchoring foundation is poured with concrete at one time. After the concrete has strength, the main anchoring template 53d is removed to complete the pre-embedded installation of the main anchoring system 53; the side pier plate 59 is pre-embedded on the two terminal waterway banks of the modular air shield dam;

[0150] 2) See Appendix Figure 1 , Attachment Figure 7 , Attachment Figure 8 And attached Fig. 9 The main pipeline 21 and various signal lines and signal lines are pre-buried underground through pipes;

[0151] 3) See Appendix Figure 1 and attached Figure 3 On the screw rod of the main anchor bolt row 53a, the rubber airbag 52 (wedge-shaped edge) and the steel shield 51 are installed by a wedge-shaped pressure plate 54 through a flexible hinge cover plate 55, a shield plate shaft 51e and bolts;

[0152] 4) See Appendix Figure 1 The water level sensor 32 is installed on the modular air shield dam, wherein the radar water level sensor L2 is suspended and set on the water surface, and if the underwater water level sensor L1 is used, it is set underwater;

[0153] 5) See Appendix Figure 1 The inclinometer 33 is installed on each set of shield plates 61 according to the number of air shield dam module units;

[0154] 6) See Appendix Figure 1 Install several video monitors 34 above the places where video monitoring is required;

[0155] 7) See Appendix Fig. 9 Install the mushroom-shaped one-way elastic aeration head 6b and the aeration head base 6c on the water-facing side of the modular air shield dam;

[0156] See attached Figure 1 ~Attached Figure 3 and attached Figure 7 , Attachment Figure 8 , Attachment Fig. 9 , the components involved in the gas circuit are connected through the main pipeline 21, and the components involved are connected through the signal line to complete the installation of the modular gas shield dam.

[0157] Example 1

[0158] At the estuary of an inland river in a certain area, an air shield dam with a water retaining capacity of 3.5 meters and a length of 110 meters was built, and the modular air shield dam of the present invention was adopted.

[0159] This embodiment is described with reference to the accompanying drawings and the above-mentioned specific implementation manner.

[0160] The water level sensor 32 is a radar water level sensor L2 arranged on the water surface;

[0161] The main anchor bolt row 53a is made of 316L stainless steel;

[0162] The wedge-shaped pressure plate 54;

[0163] The rubber airbag 52 has a size of 10m (L)×3.5 (H), i.e., a length-to-width ratio of 2.85;

[0164] The material of the outer weather-resistant film 52d of the rubber airbag 52 is EPDM rubber, and 3 parts of tetrapod-shaped zinc oxide whiskers and 7 parts of rutile titanium dioxide are added to 100 parts of the EPDM rubber mix;

[0165] The steel shield 51 is made of 316L stainless steel;

[0166] The busbar 23 includes 11 groups of module units / 11 branch pipes 23a.

[0167] The fully raised operating pressure of the modular air shield dam is 0.12MPa, and only a small amount of air is added or pressure is relieved to cope with changes in air temperature.

[0168] Comparative Example 1

[0169] Build an air shield dam with a water barrier height of 3.5 meters and a length of 80 meters.

[0170] Underwater water level sensor L1;

[0171] Manual and automatic control systems 2, 3, 10 groups of air bags 52 and steel shields 51 are uniformly controlled;

[0172] The main anchor bolt is a single carbon steel, and the concrete is poured in the second phase;

[0173] Steel shield 51 is anti-corrosion carbon steel, with 80μm hot-spray zinc, 40μm epoxy zinc-rich, 60μm epoxy mica iron intermediate paint, and 60μm chlorosulfonated polyethylene topcoat;

[0174] The air shield dam is in the form of a wedge-shaped pressure plate 54;

[0175] The size of the rubber airbag 52 is 7.94m (L)×3.5 (H), that is, the aspect ratio is equal to 2.27;

[0176] The outer weather-resistant film 52d of the rubber airbag 52 is made of 70% EPDM rubber and 30% natural rubber;

[0177] The production process of rubber airbag 52 is a staged vulcanization process on a flat vulcanizing machine;

[0178] The frame material used for the rubber airbag 52 is a cord fabric.

[0179] When the air shield dam was initially debugged and raised, individual air bags required a pressure of 0.3 MPa, i.e., the overall pressure was 0.3 MPa at this time. Some rubber air bags 52 had air leaks and bubbles, and were replaced or repaired;

[0180] The operating pressure for full top lifting is 0.19MPa. There is air bag leakage or slow air release, and frequent air / pressure replenishment is required. The top of the air shield dam (over the water surface) is difficult to level and is not in a straight line.

[0181] After one year of operation, the rubber airbag 52 had blistering and the chlorosulfonated polyethylene topcoat had peeling, cracking and fine lines.

[0182] Table 6 Vulcanized rubber properties

[0183]

[0184] Table 6 Anticorrosion performance of chlorosulfonated polyethylene topcoat

[0185] performance Chlorosulfonated polyethylene topcoat Adhesion (cross-cut method), grade ≤ 0 Impact resistance, cm≥ 50 Flexibility, mm≤ 1 Acid, alkali and salt resistance (30d) No bubbles, no rust, no shedding Heat and humidity resistance (7d) No blistering, no rusting, no shedding Weather resistance (after months of natural exposure in Guangzhou) ≤ Loss of light, level 3 Color change, level 3 Powdering, Grade 2 Crack, Grade 1

[0186] Test method: HG / T 2661-1995 "Chlorosulfonated polyethylene anticorrosion coating (two-component)"

[0187] By comparing Example 1 with Comparative Example 1, it can be seen that:

[0188] 1) The comparison of the overall vulcanization process of the rubber airbag 52 produced by the autoclave and the hardness and other properties of the rubber materials involved in the rubber material compatibility shows that the rubber airbag 52 product has good density, flexibility, integrity and quality, while the segmented vulcanization production process of the flat vulcanizer is difficult to ensure the flexibility, strength, quality and integrity of the rubber airbag 52 product;

[0189] 2) The continuous reinforced skeleton fiber cord cocoon-like structure of the rubber airbag 52 of the present invention is incomparable to the overlapped structure of the cord fabric in terms of flexibility, strength, aging resistance and service life of the overall rubber airbag 52; as is known to all, the strength of the rubber airbag 52 is provided by the reinforced skeleton fiber, while the rubber material provides elasticity and air tightness;

[0190] 3) The ratio of the length to width (water retaining height) of the rubber airbag is above 2.5, which reduces the operating pressure of the air shield dam and improves the reliability and safety of the air shield dam operation;

[0191] 4) Each rubber airbag 52 (unit module) is controlled individually, with good real-time performance and synchronous operation;

[0192] 5) Compared with the traditional single main anchor bolt method, the main anchor system 53 of the present invention ensures the accurate positioning of the main bolt, omits the second phase of concrete pouring, and reduces the cumbersome complexity of construction, the influence of human factors and labor intensity;

[0193] 6) Taking into account the multiple beneficial effects of the present invention, air bag leakage or slow air release is eliminated and the overall stability, reliability and safety of the air shield dam are improved.

[0194] Example 2

[0195] Construct a modular air shield dam with a water retaining capacity of 2.5 meters and a length of 40 meters according to Example 1.

[0196] The water level sensor 32 is an underwater water level sensor L1;

[0197] The main anchor bolt row 53a is made of 304 stainless steel;

[0198] The wedge-shaped pressure plate 54;

[0199] The rubber airbag 52 has a size of 10m (L)×2.5 (H), i.e., a length-to-width ratio of 4.0;

[0200] The material of the outer weather-resistant film 52d of the rubber airbag 52 is EPDM rubber, and 5 parts of tetrapod-shaped zinc oxide whiskers and 5 parts of rutile titanium dioxide are added to 100 parts of the EPDM rubber mix;

[0201] The steel shield 51 is made of 304 stainless steel;

[0202] The busbar 23 is composed of 4 groups of module units / 4 branch pipes 23a.

[0203] The fully raised operating pressure of the modular air shield dam is 0.060MPa, and only a small amount of air is added or pressure is relieved to cope with changes in air temperature.

[0204] Example 3

[0205] Construct a modular air shield dam with a water retaining capacity of 2.5 meters and a length of 35 meters according to Example 1.

[0206] The main anchor bolt row 63a is made of carbon steel;

[0207] The rubber airbag 52 has a size of 8.75m (L)×2.5 (H), i.e., a length-to-width ratio of 3.5;

[0208] The material of the outer weather-resistant film 52d of the rubber airbag 52 is EPDM rubber, and 4 parts of tetrapod-shaped zinc oxide whiskers and 6 parts of rutile titanium dioxide are added to 100 parts of the EPDM rubber mix;

[0209] The steel shield 51 is made of heavy-duty anti-corrosion carbon steel, with 120 μm hot-spray zinc, 40 μm epoxy zinc-rich, 60 μm epoxy mica iron intermediate paint, and 60 μm fluorocarbon topcoat;

[0210] The busbar 23 is composed of 4 groups of module units / 4 branch pipes 23a.

[0211] The fully raised operating pressure of the modular air shield dam is 0.061MPa, and only a small amount of air is added or pressure is relieved due to changes in air temperature.

[0212] Comparative Example 2

[0213] Construct an air shield dam with a water retaining capacity of 2.5 meters and a length of 35 meters according to Example 1.

[0214] Manual and automatic control system, unified control of 8 sets of airbags 52 and steel shield;

[0215] Steel shield 51 is anti-corrosion carbon steel, with 120μm hot-spray zinc, 40μm epoxy zinc-rich, 60μm epoxy mica iron intermediate paint, and 60μm acrylic polyurethane topcoat;

[0216] The air shield dam is in the form of a flat plate with upper and lower pressure plates, i.e. the airbag is perforated and anchored;

[0217] The size of the rubber airbag 52 is 4.37m (L)×2.5 (H), that is, the aspect ratio is equal to 1.75;

[0218] The outer weather-resistant film 52d of the rubber airbag 52 is made of 80% EPDM rubber and 20% natural rubber;

[0219] The production process of the rubber airbag 52 is a flat plate vulcanizing machine process;

[0220] The frame material used for the rubber airbag 52 is canvas.

[0221] The operating pressure for the air shield dam to fully rise to the top is 0.12MPa. If there is air bag leakage or slow air release, it needs to be replenished with air / pressure more frequently.

[0222] During debugging, some rubber airbags 52 were torn from the perforations; the top of the air shield dam (over the water surface) was difficult to level and was not in a straight line.

[0223] After one year of operation, the rubber airbag 52 had blistering and the acrylic polyurethane topcoat had peeling, cracking and fine lines.

[0224] Table 7 Anticorrosion performance of acrylic polyurethane topcoat

[0225] performance Acrylic polyurethane topcoat Adhesion (cross-cut method), grade ≤ 1 Impact resistance, cm≥ 50 Flexibility, mm≤ 1 Salt spray resistance (1000h) No blistering, no rusting, no cracking Artificial weathering resistance (1000h) No blistering, no rusting, no cracking Acid and alkali resistance (168h) No abnormality

[0226] Test method: HG / T 2454-2006 "Solvent-based polyurethane coatings (two-component)"

[0227] By comparing Examples 1 to 3 with Comparative Example 2, it can be seen that:

[0228] 1) The flat vulcanizing machine produces rubber airbags in the 52 process, which is prone to stratification and blistering;

[0229] 2) The airbag reinforcement skeleton fiber material 52c is made of canvas and rubber, which has high mechanical strength and hardness, but the airbag is stiff, the interlayer bonding is poor, it is easy to delaminate, the airbag has poor flexibility, and the operating pressure is high;

[0230] 3) The length-to-width ratio of the rubber airbag 52 is less than 2.5, the airbag is subjected to a large pressure, and the operating pressure of the air shield dam is high;

[0231] 4) The overall control effect of all rubber airbags 52 is not good;

[0232] 5) Perforated anchoring method, easy to tear rubber airbag 52;

[0233] 6) The installation and construction of a single main anchor bolt is cumbersome and complex, requiring a second phase of concrete pouring, making it difficult to ensure the precise positioning of the main bolt, with a great impact from human factors and high labor intensity;

[0234] 7) The acrylic polyurethane topcoat has insufficient anti-corrosion ability in harsh environments such as humidity, heat and strong ultraviolet radiation. Reasonable analysis of the length-to-width ratio of the rubber airbag 52:

[0235] Reasonable analysis of the length-to-width ratio of rubber airbags

[0236] Table 8 Reasonable analysis of the length-to-width ratio of rubber airbags

[0237]

[0238] When the airbag length-to-width ratio (L / H) is 2.5, 67.3% of the airbag length bears the steel shield and water pressure (airbag width = water retaining height, width equals 3 meters), and the effective width bearing the pressure is about 40%, that is, 26.9% of the airbag area bears the pressure; when the width is constant, within a certain length range, the pressure required to raise the airbag to the designed height is inversely proportional to the airbag length. Engineering cases can also show the actual working conditions and effects of the airbag.

[0239] The modular air shield dam of the present invention has strong functionality and good reliability, is easy to install and operate, has good real-time performance, low failure rate, strong practicality, long service life, good landscape effect, and is ecologically and environmentally friendly, and has good water retaining and flood prevention effects; the production process is simple.

[0240] The invention forms a new economic growth point, serves as a reference for the development of relevant theories and material applications of water conservancy and hydropower water retaining and flood prevention facilities, and has important social and economic benefits.

[0241] The above embodiments are preferred representative implementations of the present invention, but the present invention is not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the essence and principles of the present invention are equivalent replacement schemes and should be included in the protection scope of the present invention.

Claims

1. A modular air shield dam, characterized in that: The modular air shield dam comprises an air filling system (1), which is composed of a screw compressor (11), a Roots blower (12), an air storage tank (13), a filter (14) and a cold dryer (15); a manually controlled conveying system (2), which is composed of a main pipeline (21), a ball valve (22), a bus (23), a branch pipeline (23a), a proportional valve (24) and a pressure gauge (25); an automatic control system (3), which is composed of a PLC, a pressure sensor (31), a water level sensor (32), an angle meter (33) and a video monitor (34); a remote monitoring system (4); a dam body (5), which is composed of a steel shield (51), a rubber airbag (52), a main anchoring system (53), a wedge-shaped pressure plate (54), a flexible hinge cover plate (55), an intermediate stop seal (56), a side stop seal (57), a suppression belt (58) and a side pier plate (59); and a deicing and anti-icing device (6); The modular gas shield dam comprises a busbar (23) of a manually controlled conveying system (2) connected to a main pipeline (21), and is composed of a branch pipeline (23a), a ball valve (22), a pressure sensor (31), a proportional valve (24), and a pressure gauge (25); In the modular air shield dam, the water level sensor (32) is a radar water level sensor (L2) arranged on the water surface, or an underwater water level sensor (L1); The modular air shield dam has an automatic control system (3) and a remote monitoring system (4) / SCADA interactive feedback, and is connected and monitored by a PLC, an HMI and a shielded signal line. The pressure sensor (31), a water level sensor (32), an angle meter (33), and a video monitor (34) control and adjust the pressure and flow of the air supply of the inflation system (1), and there is no one on duty; In the modular gas shield dam, the remote monitoring system (4) is connected to the PLC of the automatic control system (3) to provide feedback to each other to realize remote monitoring; The modular air shield dam, the main anchoring system (53) comprises: a main anchoring bolt row (53a), a root embedded part (53b), a wedge embedded part (53c), a main anchoring casting positioning template (53d), a wedge-shaped pressure plate (54), and a flexible hinge cover plate (55); In the modular gas shield dam, the main anchor bolt row (53a) is composed of a plurality of screw rods, an anchor row frame and nuts; In the modular air shield dam, the screw and nut are made of 316L or 304 stainless steel or carbon steel, and the anchor row frame is made of carbon steel; The modular air shield dam, the steel shield (51) structure comprises: a steel shield main plate (51a), a rib plate (51b), a wave-breaking plate (51c), a top reinforcement pipe (51d) and a shield plate shaft (51e); In the modular air shield dam, the rubber airbag (52) is composed of an inner rubber sheet (52a), a middle rubber sheet (52b), a skeleton fiber cord (52c) and an outer weather-resistant rubber sheet (52d); In the modular air shield dam, the air shield dam with a water retaining height below 2.5 meters is anchored by flat upper and lower pressure plates, and the air shield dam with a water retaining height above 2.5 meters is anchored by wedge-shaped pressure plates (54); According to the requirements, it is composed of an array of air shield dam module units, and the air shield dam module unit includes: a single steel shield (51), a single rubber air bag (52), a branch pipe (23a) of a busbar (23) connected in series with a ball valve (22), a pressure sensor (31), a proportional valve (24), a pressure gauge (25), and an angle meter (33); The busbar (23) is made of welded 304 stainless steel pipe; the number of corresponding branch pipes (23a) is set according to the number of rubber airbags (52); the pressure sensor (31), the proportional valve (24), the pressure gauge (25), and the ball valve (22) connected in series are connected to form a single branch pipe (23a), i.e., a modular unit, to achieve manual and automatic individual control; all the single branch pipes (23a) are then connected to the main pipe (21) to form a whole.

2. A modular air shield dam according to claim 1, characterized in that: The material of the steel shield (51) is 304 stainless steel or 316L stainless steel or heavy corrosion-resistant carbon steel.

3. A modular air shield dam according to claim 2, characterized in that: The anti-corrosion method of the heavy-duty anti-corrosion carbon steel shield is as follows: hot-dip galvanizing layer + epoxy zinc-rich primer + epoxy micaceous iron intermediate paint + fluorocarbon paint topcoat.

4. A modular air shield dam according to claim 2, characterized in that: The length of a single rubber airbag (52) of the air shield dam module unit is less than or equal to 10 meters, and the ratio of the length to the width is greater than 2.

5.

5. A modular air shield dam according to claim 2, characterized in that: The material of the outer weather-resistant film (52d) of the rubber airbag (52) is EPDM rubber; 3 to 5 parts of tetrapod-shaped zinc oxide whiskers and 5 to 7 parts of rutile titanium dioxide are added to 100 parts of the EPDM rubber mix.

6. A modular air shield dam according to claim 1, characterized in that: The production process and equipment of the rubber airbag (52) is a hot-pressurized production process method, in which the hot-pressurized tank has hot air pressure and the product has vacuum negative pressure in the mold.

7. The modular air shield dam according to claim 1, characterized in that: The important components of the deicing and anti-icing device (6) are a deicing air pipe (6a), a mushroom-shaped one-way elastic aeration head (6b), and an aeration head base (6c). The deicing air pipe (6a) is also equipped with a ball valve (22), a proportional valve (24), a pressure gauge (25), and a pressure sensor (31); the mushroom-shaped one-way elastic aeration head (6b) has a one-way aeration function.

8. The modular air shield dam according to claim 1, characterized in that: The method for preparing the rubber airbag (52) comprises the following steps: Step 1: Wrap the inner film (52a) of the rubber airbag (52) on the mold according to the size of the product mold, and then lay the first layer of the middle film (52b) thereon; Step 2: Lay the first layer of skeleton fiber cords (52c) on the first layer of middle film (52b) at an angle of 45 degrees; Step 3: Lay a second layer of middle film (52b), and then lay a second layer of skeleton fiber cords (52c) thereon in a 90-degree cross pattern; Step 4: Repeat the step 3 to lay the middle film (52b) and the skeleton fiber cord (52c) until the design requirements are met, and then lay the last layer of the middle film (52b); Step 5: Add 3-5 parts of tetrapod zinc oxide whiskers and 5-7 parts of rutile titanium dioxide to 100 parts of EPDM rubber mix, and roll it into an outer layer weather-resistant film (52d); spread it on the last layer of middle film (52b); Step 6: Each time the laying process is performed, a rolling roller is used to roll the rubber airbag (52) to obtain a pre-shaped part, and then the pre-shaped composite rubber airbag (52) is cold-pressed to form a preform; Step 7: Place the preformed part of the pre-shaped composite rubber airbag (52) into an elastic outer film bag, evacuate to -0.090MPa, and send it into an autoclave with hot air pressure of 0.8MP for vulcanization for 30 to 40 minutes at 140°C. A small airbag can be placed in a metal mold and directly vulcanized on a flat vulcanizer for 30 to 40 minutes at 150°C to form a rubber airbag (52).

9. A modular air shield dam according to claim 7, characterized in that: The mushroom-shaped one-way elastic aeration head (6b) is a micro-arc fluororubber diaphragm, and its preparation method comprises the following steps: Step 1: Add 2 parts of tetrapod-shaped zinc oxide whiskers to 100 parts of fluororubber compound; Step 2: Cut the film according to the product mold size; Step 3: Preform the prepared film and skeleton fiber cloth into a one-cloth-two-rubber or two-cloth-three-rubber fiber-reinforced rubber composite tape sheet according to the size of the product mold and the spacing between the rubber layer and the cloth layer. Each time it is laid, it needs to be rolled with a rolling roller and then cold-pressed into a predetermined composite tape sheet; Step 4: Place the pre-shaped composite rubber sheet into a metal mold and vulcanize it directly on a flat vulcanizer to prepare a slightly curved rubber membrane of rubber cloth; Step 5: Use a steel needle with a diameter of 60 to 100 microns, which is thick at the top and thin at the bottom, to punch holes in the slightly curved rubber diaphragm from the inside out to form micron-level aeration micropores.

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