CN217399520U - Modular gas shield dam - Google Patents

Abstract

The utility model discloses a modular gas shield dam belongs to water conservancy water and electricity facility technical field. The modular air shield dam is a flood-proof and water-retaining facility arranged at a river channel, a sea entrance, a reservoir, a garage, a subway entrance and the like. The system comprises an inflation system, a gas-filling system and a gas-filling system, wherein the inflation system consists of a screw compressor, a Roots blower, a gas storage tank, a filter and a cooling dryer; the manual control conveying system consists of a main pipeline, a ball valve, a bus bar, a branch pipeline, a proportional valve and a pressure gauge; the automatic control system is provided with a PLC, a pressure sensor, a water level sensor, an angle instrument and a video monitor; a remote monitoring system; the dam body comprises a steel shield, a rubber air bag, a main anchoring system, a deicing and anti-icing device and accessories. The utility model solves the bottleneck problem of the traditional movable dam type, has simple installation and operation, good real-time performance, low failure rate, strong practicability, long service life, good landscape effect, ecological and environment-friendly performance and good water-retaining flood-prevention effect; the production process is simple.

Description

Modular gas shield dam

Technical Field

The invention belongs to the technical field of water conservancy and hydropower facilities. Relates to a modular gas shield dam, in particular to a flood control and water retaining facility arranged at a river channel, a sea entrance, a reservoir, a garage, a subway entrance and the like.

Background

The air shield dam inherits the essence of the traditional movable dam type, overcomes the bottleneck problem of the traditional movable dam type, and has the characteristics of simple structure and simple and rapid construction, installation, use and maintenance; the flood control and flood-fighting capacity is outstanding, and the operation is safe and reliable; the water passing height and the running state are continuously controllable; has stronger capabilities of cleaning sewage and removing sludge; the lifting is free and quick, the operation management is simple, and the operation is unattended; the service life is ultra-long, and the comprehensive benefit is high; the shock resistance is strong, and the adaptability to the foundation is high; the landscape effect is good, and the landscape device has the characteristics of ecology, environmental friendliness and the like.

Compared with other dam types, the air shield dam has obvious advantages, is widely accepted and favored in the industry, and various production technologies and products are continuously emerged.

In 7 months in 1995, the invention patent US005713699A discloses an overflow shield-shaped gate system and an inflatable bag thereof, and the core technology is 'reinforced rubber dam bag (the pressure resistance can reach 0.5 MPa').

In 12.2010, the inventor's publication No. CN 102086637B discloses a "high-pressure seamless large-sized rubber airbag and a production process thereof", and the core technology is that the composition is EPDM outer covering rubber with excellent weather resistance, at least four (even) layers of framework layers formed by continuous high-strength cords interlaced at 90 degrees to form 46-56 degrees, a middle rubber layer formed by neoprene and natural blended rubber, and an inner rubber layer formed by butyl rubber with excellent air tightness. The production process flow comprises the following steps: (1) plasticating, matching, mixing and discharging raw rubber; (2) dipping and coating the high-strength cord; (3) performing by rotating the roller; weaving open-end fibers to enable the joints to be continuous, and meanwhile, sticking a film; (4) integrally forming at one time; (5) integral vulcanization; (6) and (4) reinforcing the edges and the corners and performing heat vulcanization.

2012, 4 months and the disclosure of the invention patent of CN 102628260B, disclose a ' vulcanizing method of a vulcanizing press of an air bag of a dam's flat vulcanizing machine ' a vulcanizing method of a vulcanizing press of an air bag of a dam's flat vulcanizing machine ', the core technology is that the rubber inner layer (1) and the rubber outer layer (2) are included, a frame layer (3) is clamped between the rubber inner layer and the rubber outer layer, the rubber inner layer (1) and the rubber outer layer (2) are combined into an integral structure by a vulcanizing 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 closely combined into an integral body by a calendering technology, the frame layer (3) is formed, the inclination angles of the cord fabrics (5) of the odd layer and the even layer of the cord fabric are opposite, the inclination angle of the cord fabric (5) is 40-60 degrees, the cord fabric is polyester cord fabric or nylon cord fabric.

The invention patent of patent publication No. CN 107761672A in 11.2017 discloses an air shield dam air bag and a processing technology thereof, and the core technology is that the air shield dam air bag comprises an air bag body, at least two layers of cord fabrics are arranged in the air bag body, a strip-shaped anchoring part is arranged on one side edge of the air bag body, the anchoring part and the air bag are vulcanized into a whole, and a plurality of anchoring holes are uniformly distributed on the anchoring part.

The air shield dam can play a role in retaining water and preventing flood, but the following defects are found through practical application:

1. by adopting the process of producing the rubber airbag of the core component of the gas shield dam by using the flat vulcanizing machine, the skeleton fiber and the rubber material generate a thermal aging phenomenon and fiber splitting at higher temperature and pressure, so that the strength of the material is reduced and the service life of the product is shortened, and particularly when the size of the airbag is larger, the phenomenon is more serious due to sectional vulcanization; meanwhile, the flat vulcanizing machine has large consumption and loss of heat energy and high operation cost.

2. The fiber cloth in the structure of the reinforcing framework fiber of the air bag is discontinuous and is bonded or lapped by rubber or adhesive, so that the aging resistance of the whole air bag is poor, and the service life of the whole air bag is greatly shortened.

3. The reinforced skeleton fiber material of the air bag adopts cord fabric or canvas, so that the interlayer adhesion is poor, the layering is easy, the flexibility of the air bag is poor, and the operating pressure is increased.

4. The ratio of the length to the width (water retaining height) of the rubber air bag is below 2.5, so that the rubber air bag has small stress area and strong pressure.

5. When the water retaining height is higher than 2.5 meters, the flat-plate-type upper and lower pressing plates are adopted, holes need to be punched at the edges of the air bags for the main anchoring bolt to penetrate through, and under the working conditions of high strength and high air pressure, the air bags are easy to tear, accidents and dangers are caused, and the reliability and the safety are poor.

6. Each air bag is not independently controlled, instantaneity is poor, asynchronism is caused during operation, and the whole air shield dam is not on the same line.

7. Under the working conditions of high altitude or strong sunshine, the carbon steel antiseptic treatment has insufficient weather resistance and ultraviolet resistance.

8. The simple single main anchoring form and the construction of the embedded bolts are complicated, concrete needs to be poured in the second stage, accurate positioning of the main bolts is difficult to guarantee, human factor influence is great, and labor intensity is high.

9. The air bag is deflated or slowly deflated to be normal.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a modular air shield dam, which solves the bottleneck problem of the existing air shield dam, and has the advantages of simple installation and operation, good real-time performance, low failure rate, strong practicability, long service life, good landscape effect, ecological and environment friendliness and good water retaining and flood preventing effects; the production process is simple.

In order to achieve the purpose, the invention provides the following technical scheme: the modular air shield dam is a flood-proof and water-retaining facility arranged at a river channel, a sea entrance, a reservoir, a garage, a subway entrance and the like.

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

in the modular air shield dam, a bus bar 23 of a manual control conveying system 2 is connected to a main pipeline 21 and consists 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;

according to the modular air shield dam, an automatic control system 3 and a remote monitoring system 4/SCADA (supervisory control and data acquisition) are interactively fed back, a pressure sensor 31, a water level sensor 32, an angle instrument 33 and a video monitor 34 are connected and monitored by a PLC (programmable logic controller), an HMI (human machine interface) and a shielding signal line, and the pressure and the flow of air supply of an air inflation system 1 are controlled and adjusted;

according to the modular gas shield dam, the remote monitoring system 4/SCADA is connected with the PLC of the automatic control system 3 and fed back to realize remote monitoring;

the modular air shield dam is characterized in that a steel shield 51 structurally comprises: a steel shield main plate 51a, a rib plate 51b, a wave breaking plate 51c, a top reinforcing pipe 51d and a shield plate shaft 51 e;

in the modular air shield dam, the rubber air bag 52 is composed of an inner rubber sheet 52a, a middle rubber sheet 52b, a framework fiber cord 52c and an outer weather-resistant rubber sheet 52 d;

the modular air shield dam, the primary anchoring system 53 comprises: a main anchoring bolt row 53a, a root embedded part 53b, a wedge part embedded part 53c, a main anchoring pouring positioning template 53d, a wedge-shaped pressing plate 54 and a flexible hinge cover plate 55;

in the modular air 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 gas shield dam, the metal screw rods and the 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;

the anchoring of the modular air shield dam with the water retaining height of less than 2.5 meters can be a flat-plate type upper pressing plate and a flat-plate type lower pressing plate, and the air shield dam with the water retaining height of more than 2.5 meters is a wedge-shaped pressing plate 54.

Further, the gas shield dam comprises a plurality of groups of gas shield dam module units according to the demand, and the gas shield dam module units comprise: a single steel shield 51, a single rubber air bag 52, a ball valve 22, a pressure sensor 31, a proportional valve 24, a pressure gauge 25 and an angle gauge 33 which are connected in series with a branch pipe 23a of the bus bar 23.

Further, the bus bar 23 is made of a welded 304 stainless steel tube; setting the corresponding number of branch pipelines 23a according to the number of units of the rubber air bags 52; the pressure sensor 31, the proportional valve 24 and the pressure gauge 25 are connected in series and connected with the ball valve 22 to form a single branch pipeline 23a, so that manual and automatic module type independent control is realized; all the branch pipes 23a are connected in parallel to the main pipe 21 to form a whole.

Further, the steel shield 51 is made of 304 stainless steel or 316L stainless steel or heavy-duty anticorrosive carbon steel.

Further, the anti-corrosion method of the heavy-duty carbon steel shield comprises the following steps: hot galvanizing coat, epoxy zinc-rich primer, epoxy micaceous iron intermediate paint and fluorocarbon paint finish.

Further, the length of the single rubber air bag 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 more than 2.5.

Further, the outer layer weather-proof rubber sheet (52d) of the rubber air bag 52 is made of ethylene propylene diene monomer; 3-5 parts of four-foot zinc oxide whisker and 5-7 parts of rutile titanium dioxide are added into 100 parts of ethylene propylene diene monomer rubber compound.

Further, the production process and equipment of the rubber air bag 52 are the autoclave production process method, the autoclave has hot air pressure, and the product has vacuum negative pressure in the mold.

Further, important components of the deicing and anti-icing device 6 are a deicing air pipe 6a, a mushroom-shaped one-way elastic aerator 6b and an aerator base 6c, and the deicing air pipe 6a is also provided with a ball valve 22, a proportional valve 24, a pressure gauge 25 and a pressure sensor 31; the mushroom-type unidirectional elastic aeration head 6b has a unidirectional aeration function.

Further, the preparation method of the rubber air bag 52 comprises the following steps:

step 1: wrapping the inner film 52a of the rubber air bag 52 on a mould according to the size of a product mould, and then paving a first layer of middle film 52b on the mould;

step 2: laying a first layer of framework fiber cords 52c on the first layer of medium rubber sheets 52b at an angle of 45 degrees;

and step 3: laying a second layer of middle rubber sheet 52b, and laying a second layer of framework fiber cords 52c on the second layer of middle rubber sheet in a 90-degree crossed mode;

and 4, step 4: laying the middle rubber sheets 52b and the skeleton fiber cords 52c repeatedly according to the step 3 until the design requirements are met, and laying the last layer of middle rubber sheets 52 b;

and 5: adding 3-5 parts of tetragonal zinc oxide whiskers and 5-7 parts of rutile titanium dioxide into 100 parts of ethylene propylene diene monomer rubber compound, and rolling into an outer weather-resistant rubber sheet 52 d; it is laid on the last layer of the middle film 52 b;

and 6: rolling by a rolling roller is needed for each laying to prepare a preset type piece of the rubber air bag 52, and then, the preset type piece is cold-pressed into an embryo of the preset type composite rubber air bag 52;

and 7: the embryo of the pre-shaped composite rubber air bag 52 is put into an elastic outer membrane bag, vacuumized to-0.090 MPa, sent into an autoclave with hot air pressure of 0.8MP for 30-40 min/140 ℃, and the small air bag can be put into a metal mold to be directly vulcanized on a flat vulcanizing machine for 30-40 min/150 ℃ to obtain the rubber air bag 52.

Further, the mushroom-type unidirectional elastic aeration head 6b is a micro-arc-shaped fluororubber membrane, and the preparation method comprises the following steps:

step 1: adding 2 parts of four-leg zinc oxide whiskers into 100 parts of fluororubber rubber compound;

step 2: preparing a film according to the size of a product mold;

and step 3: pre-forming the prepared rubber sheet and skeleton fiber cloth into a one-cloth-two-rubber or two-cloth-three-rubber fiber reinforced rubber composite adhesive sheet according to the size of a product mold in a mode of spacing a rubber layer and a cloth layer, rolling and pressing by using a rolling roller every time of laying, and then performing cold pressing to form a pre-formed composite adhesive sheet;

and 4, step 4: putting the pre-shaped composite adhesive tape piece into a metal mould and directly vulcanizing on a flat vulcanizing machine to prepare the micro-arc-shaped rubber diaphragm of the rubber cloth;

and 5: and punching the micro-arc rubber membrane from inside to outside by using a steel needle with the diameter of the micro-hole of 60-100 microns and the diameter of the steel needle is thick at the top and thin at the bottom to prepare the micro-scale aeration micro-hole.

Compared with the prior art, the invention has the beneficial effects that:

1. the modular air shield dam has strong functionality and reliability, is easy to install and operate, has good water retaining and flood preventing performance, is suitable for various complicated working conditions such as riverways, sea entrances, reservoirs, garages, subway entrances and the like, and solves the bottleneck problem of the traditional movable dam type;

2. the process for producing the air bag by using the autoclave has the advantages that the hot air pressure and the vacuum negative pressure of the product in the mold improve the compactness, integrity, quality and service life of the air bag product, and prevent fiber strand splitting and thermal aging; the vulcanization temperature and time are reduced, and the heat energy utilization rate is improved;

3. the silkworm cocoon type structure of the reinforced skeleton fiber of the air bag really realizes the continuity of the skeleton fiber, ensures the strength and the aging resistance of the whole air bag and prolongs the service life to more than 50 years;

4. the cord thread is adopted as the framework material, so that the flexibility of the air bag is improved, and the operation pressure is reduced; the glue layers on the two sides of the fiber are 'lapped', the interlayer affinity is ensured, and the strength and the aging resistance of the whole air bag are improved;

5. the functional layer of the rubber air bag and the outer layer weather-resistant rubber sheet sizing material are compatible, so that the ageing resistance and the service life of the rubber air bag are improved, and the flexibility of the air bag and the reduction of the operating pressure are ensured;

6. the ratio of the length to the width (water retaining height) of the rubber air bag is limited to be more than 2.5, so that the operation pressure of the air shield dam is reduced, and the operation reliability and safety of the air shield dam are improved;

7. the non-perforation wedge-shaped anchoring form is adopted, so that the reliability and the safety of the air shield dam under the working conditions of high strength and high air pressure are ensured;

8. each air bag is independently controlled in real time, so that the running consistency of each modular unit and the running of the whole air shield dam are ensured without difference;

9. the surface corrosion prevention design and application of the carbon steel shield plate ensure the heavy corrosion prevention, aging resistance and ultraviolet resistance of the shield plate, and are particularly suitable for working conditions with severe corrosion prevention requirements such as high altitude or strong sunshine;

10. by adopting the anchoring system of the bolt anchoring row, the pouring template, the root embedded part and the wedge part embedded part, the accurate positioning of the main bolt is ensured, the secondary pouring of concrete is omitted, and the complicated construction, the complexity, the influence of human factors and the labor intensity are reduced;

11. the radar water level sensor on the water surface is adopted, so that the installation and the maintenance are convenient, and the operation of the air shield dam is effectively monitored;

12. the ice removing and preventing device is adopted to prevent the damage of ice cover static pressure and ice flow to the air shield dam in cold seasons;

13. the air shield dam has the beneficial effects of eliminating air leakage or slow air scattering of the air bag and improving the overall stability, reliability and safety of the air shield dam.

Drawings

FIG. 1 is a schematic view of the overall structure of a modular air shield dam of the present invention;

FIG. 2 is a schematic diagram of the structure of the anchoring system of the modular air shield dam of the present invention;

FIG. 3 is a schematic diagram illustrating the structure and operation of a modular gas shield dam body according to the present invention;

FIG. 4 is a schematic view of the air bag structure of the modular air shield dam of the present invention;

FIG. 5 is a schematic view of the fiber structure of the skeleton of the modular air shield dam airbag of the present invention;

FIG. 6 is a schematic structural diagram of a steel shield of the modular air shield dam of the present invention;

FIG. 7 is a schematic view of a busbar structure of the modular air shield dam of the present invention;

FIG. 8 is a schematic diagram of the modular air shield dam automatic control system and the SCADA;

fig. 9 is a schematic structural diagram of the modular air shield dam deicing and anti-icing device of the invention.

In the figure: 1-an inflation system, 11-a screw compressor, 12-a Roots blower, 13-an air storage tank, 14-a filter and 15-a cold dryer; 2-a manual control conveying system, 21-a main pipeline, 22-ball valves, 23-a bus bar, 23 a-branch pipelines, 24-proportional valves and 25-a pressure gauge; 3. an automatic control system, 31-a pressure sensor, 32-a water level sensor (L2-a radar water level sensor, L1-an underwater water level sensor), 33-an angle gauge and 34-a video monitor; 4-a remote monitoring system; 5-dam body, 51-steel shield, 51 a-steel shield main board, 51 b-ribbed plate, 51 c-wave breaker, 51 d-top reinforcement pipe, 51 e-shield shaft, 51 f-steel shield fixing bolt, 52-rubber air bag, 52 a-inner rubber sheet, 52 b-middle rubber sheet, 52 c-skeleton fiber cord, 52 d-outer weather-resistant rubber sheet, 53-main anchoring system, 53 a-main anchoring bolt row, 53 b-root embedded part, 53 c-wedge embedded part, 53 d-main anchoring pouring positioning template, 54-wedge pressing plate, 55-flexible hinge cover plate, 56-interval sealing, 57-side sealing, 58-inhibiting belt and 59-side pier plate; 6-deicing and anti-icing device, 6 a-deicing air pipe, 6 b-mushroom type one-way elastic aeration head and 6 c-aeration head base.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a modular gas shield dam, anti-icing device set up in the flood control manger plate facility of river course, entry, reservoir, garage, subway entry etc. department, solved the bottleneck problem of current gas shield dam.

A modular air shield dam comprising: the inflation system 1 consists of a screw compressor 11, a Roots blower 12, a gas storage tank 13, a filter 14 and a cooling dryer 15; the manual control conveying system 2 consists of a main pipeline 21, a ball valve 22, a bus bar 23, a branch pipeline 23a, a proportional valve 24 and a pressure gauge 25; the automatic control system 3 is provided with a PLC, a pressure sensor 31, a water level sensor 32, an angle instrument 33 and a video monitor 34; a remote monitoring system 4; the dam body 5 comprises a steel shield 51, a rubber air bag 52, a main anchoring system 53, a wedge-shaped pressing plate 54, a flexible hinge cover plate 55, an interval sealing 56, a side sealing 57, a restraining belt 58 and a side pier plate 59; and a deicing and anti-icing device 6.

The air shield dam comprises array air shield dam modular unit according to the demand, and air shield dam modular unit includes: a single steel shield 51, a single rubber air bag 52, a ball valve 22, a pressure sensor 31, a proportional valve 24, a pressure gauge 25 and an angle gauge 33 which are connected in series with a branch pipe 23a of the bus bar 23.

The bus bar 23 is made of welded 304 stainless steel pipes; setting the corresponding number of branch pipelines 23a according to the number of units of the rubber air bags 52; the pressure sensor 31, the proportional valve 24 and the pressure gauge 25 are connected in series and connected with the ball valve 22 to form a single branch pipeline 23a, so that manual and automatic module type independent control is realized; all the branch pipes 23a are connected in parallel to the main pipe 21 to form a whole.

The bus bar 23 of the manual control conveying system 2 is connected to the main pipe 21, and is composed of a branch pipe 23a, a ball valve 22, a pressure sensor 31, a proportional valve 24, and a pressure gauge 25.

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

The automatic control system 3 and the remote monitoring system 4/SCADA are interactively fed back, the pressure sensor 31, the water level sensor 32, the angle gauge 33 and the video monitor 34 are connected and monitored by the PLC, the HMI and the shielding signal line, and the pressure and the flow of the air supply of the inflation system 1 are controlled and adjusted.

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

The steel shield 51 structure includes: a steel shield main plate 51a, a rib plate 51b, a wave breaker plate 51c, a top reinforcing pipe 51d and a shield plate shaft 51 e.

The steel shield 51 is made of 304 stainless steel or 316L stainless steel or heavy-duty anticorrosive carbon steel.

The corrosion prevention method of the heavy-corrosion-resistant carbon steel shield comprises the following steps: hot galvanizing layer, epoxy zinc-rich primer, epoxy micaceous iron intermediate paint and fluorocarbon paint finish.

The rubber bladder 52 is composed of an inner film 52a, a middle film 52b, a skeleton fiber cord 52c, and an outer weather-resistant film 52 d.

The length of the single rubber air bag 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 more than 2.5.

The outer weather-resistant rubber sheet 52d of the rubber airbag 52 is ethylene propylene diene monomer; 3-5 parts of four-foot zinc oxide whisker and 5-7 parts of rutile titanium dioxide are added into 100 parts of ethylene propylene diene monomer rubber compound.

The primary anchoring system 53 comprises: main anchor bolt row 53a, root buried piece 53b, wedge buried piece 53c, main anchor pouring positioning template 53d, wedge clamp plate 54, flexible hinge cover plate 55.

The main anchor bolt row 53a is constituted by a plurality of screws, an anchor row frame, and nuts.

The metal screw and the nut are made of 316L or 304 stainless steel or carbon steel, and the anchoring row frame is made of carbon steel.

The anchoring of the air shield dam with the water retaining height of less than 2.5 meters can be a flat-plate type upper pressing plate and a flat-plate type lower pressing plate, and the air shield dam with the water retaining height of more than 2.5 meters is a wedge-shaped pressing plate 54.

The production process and equipment of the rubber air bag 52 are the production process method of the autoclave, the autoclave has hot air pressure and the product has vacuum negative pressure in the mould.

The preparation method of the rubber airbag 52 comprises the following steps:

step 1: wrapping the inner film 52a of the rubber air bag 52 on a mould according to the size of a product mould, and then paving a first layer of middle film 52b on the mould;

step 2: laying a first layer of framework fiber cords 52c on the first layer of medium rubber sheets 52b at an angle of 45 degrees;

and step 3: laying a second layer of middle rubber sheets 52b, and laying a second layer of framework fiber cords 52c on the middle rubber sheets in a 90-degree crossed mode;

and 4, step 4: laying middle rubber sheets 52b and framework fiber cords 52c repeatedly according to the step 3 until the design requirements are met, and laying the last layer of middle rubber sheets 52 b;

and 5: adding 3-5 parts of tetragonal zinc oxide whiskers and 5-7 parts of rutile titanium dioxide into 100 parts of ethylene propylene diene monomer rubber compound, and rolling into an outer weather-resistant rubber sheet 52 d; it is laid on the last layer of the middle film 52 b;

step 6: rolling by a rolling roller is needed for each laying to prepare a preset type piece of the rubber air bag 52, and then, the preset type piece is cold-pressed into an embryo of the preset type composite rubber air bag 52;

and 7: filling the embryo of the pre-shaped composite rubber air bag 52 into an elastic outer membrane bag, vacuumizing to-0.090 MPa, putting into a hot-pressing tank with hot air pressure of 0.8MPa for vulcanization (140 ℃ multiplied by 60min), and vulcanizing the small air bag or the small air bag which can be filled into a metal mold directly on a plate vulcanizing machine (150 ℃ multiplied by 60min) to obtain the rubber air bag 52.

In the above-described manufacturing scheme of the rubber bladder 52 material (inner rubber sheet 52a, middle rubber sheet 52b and weather-resistant outer rubber sheet 52d) according to 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 rubber air bag weather-resistant outer rubber sheet 52d material is as follows international standard ISO 11346: 1997, a hot air accelerated aging test at 70 ℃, 80 ℃ and 90 ℃ is carried out, and the service life at 23 ℃ is extrapolated to 79.3 years (the safety coefficient is 2).

TABLE 1 vulcanizate Properties

The EPDM of the weather-resistant outer-layer film material is compatible, and the food hygiene performance of the product is as shown in the table 2 according to the inspection performance of national standard GB 4806.11-2016 rubber material and product for food contact:

TABLE 2 inspection of the hygiene of the sized food

The physical and mechanical properties of the composites made with rubber and fiber reinforced backbone are shown in table 3:

TABLE 3 physical Properties of the composite rubberized fabrics

The rubber material of the rubber air bag 52 has excellent compatibility of components, the production process is simple and convenient to operate, the rubber material can meet the requirements of one-step forming and vulcanization of weather-proof, ageing-resistant and high-strength rubber materials and rubber parts for hydraulic engineering or other rubber products, and the production stability is good; the produced rubber product has high compression strength (the using pressure reaches more than 1.5 MPa), the service life is more than 50 years, and the environmental sanitation index exceeds the national standard and requires 4 orders of magnitude; the method is particularly suitable for the production and application of key air bags of water conservancy water retaining flood prevention engineering air shield dams and rubber dams.

The invention relates to a test method of a rubber air bag 52 material, which comprises the following steps:

GB/T2941-2006 Standard temperature, humidity and time for environmental Conditioning and testing of rubber samples (eqv ISO 23529: 2004);

GB/T528-2009 determination of tensile stress strain Properties of vulcanized rubber or thermoplastic rubber (eqv ISO 37: 2005);

GB/T529-;

GB/T531.1-2008 "method for testing indentation hardness of rubber pocket durometer" (idt ISO 7619: 2004);

GB/T3512-;

GB/T7759-2015 compression set measurements of vulcanized rubber and thermoplastic rubber at Normal, high and Low temperatures (eqv ISO 815: 2008);

GB/T7762-;

GB/T9865.1-1996 preparation of samples and specimens of vulcanized or thermoplastic rubber first part: physical testing (idt ISO 4461-1: 1993);

GB/T15256-;

ISO 11346：2014《Rubber,vulcanized or thermoplastic-Estimation of life-time and maximum temperature of use from an Arrhenius plot》；

GB/T7755.1-2018 determination of air Permeability of vulcanizates or thermoplastic rubbers part 1: differential pressure method (eqv ISO 2782-1:2012, NEQ)

GB 4806.11-2016 rubber materials and products for food contact;

GB/T532-2008 < determination of adhesion strength of vulcanized rubber to fabrics (neq ISO 36: 2005);

HG/T2580-2008 determination of tensile Strength and elongation at Break of rubber-or Plastic-coated fabrics (eqv ISO 1421: 1977).

The invention relates to a surface heavy-duty anticorrosion scheme for a carbon steel shield 51 and other carbon steels, which comprises the following steps:

the surface heavy corrosion prevention scheme of the carbon steel is shown in the table 4, and the corrosion prevention performance is shown in the table 5:

TABLE 4 heavy surface anticorrosion scheme for carbon steels

Coating layer	Name of the product	Dry film thickness DFT: mum of	Note that
				Hot zinc spraying	Zinc powder	80～120
Primer coating	Epoxy zinc-rich	40～80
				Middle coating	Epoxy mica iron intermediate paint	60～80	Glass flakes
Finish paint	Fluorocarbon finish paint	40～60	Superstrong uvioresistant ray

TABLE 5 anticorrosive performance of the coating

The invention relates to a method for testing heavy corrosion resistance of surfaces of a carbon steel shield 51 and other carbon steels, which comprises the following steps:

GB/T9793-2012 "thermal spraying metals and other inorganic coatings zinc, aluminum and alloys thereof" (eqv ISO 2063:2005 IDT);

HG/T3668-2009 Zinc-rich primer (eqv JIS K5552: 2002 ジンクリッチプライマー);

HG/T4340-2012 epoxy cloud iron intermediate paint (eqv JIS K5555: 2002 エポキシ);

HG/T3792-2005 crosslinked fluororesin coating (eqv JIS K5659: weather-resistant coating for 2008 steel structures);

SL 105-2007 specification for corrosion protection of hydraulic metal structures.

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

1. control room indoor installation

1) Referring to fig. 1, an inflation system 1 is installed in a control room;

2) referring to fig. 1 and 7, a bus bar 23 of the manual control conveying system 2 and a deicing air pipe 6a of the deicing and anti-icing device 6 are connected to a main pipeline 21, the bus bar 23 comprises a plurality of groups of branch pipelines 23a, and a ball valve 22, a pressure sensor 31, a proportional valve 24 and a pressure gauge 25 are connected in series on each branch pipeline 23 a; the bus 23 is housed in a so-called manual control cabinet; the ball valve 22, the proportional valve 24, the pressure gauge 25 and the pressure sensor 31 which are serial components of the deicing and anti-icing device 6 are simultaneously installed;

3) referring to fig. 1 and 8, the logic control program of the automatic control system 3 and the remote supervisory control system 4/SCADA are assembled into a control cabinet, called as an automatic control cabinet, which is installed in a control room.

2. Outside the control room

1) Referring to fig. 1 and 2, the main anchoring position template 53d, the root embedded parts 53b, the wedge embedded parts 53c and the main anchoring bolt row 53a are arranged together with the reinforcement cage, and the main anchoring foundation is poured with concrete at one time. Taking down the main anchoring positioning template 53d after the concrete has strength to complete the pre-embedding installation of the main anchoring system 53; the side pier plates 59 are pre-embedded at the two terminal water channel shores of the modular gas shield dam;

2) with reference to fig. 1, 7, 8 and 9, a main pipeline 21 and various signal lines and signal line through pipes are pre-buried underground;

3) referring to fig. 1 and 3, a wedge-shaped pressing plate 54 is used for mounting a rubber air bag 52 (wedge-shaped edge) and a steel shield 51 on a screw rod of a main anchoring bolt row 53a through a flexible hinge cover plate 55, a shield plate shaft 51e and a bolt;

4) referring to fig. 1, the water level sensor 32 is installed on a modular air shield dam, wherein the radar water level sensor L2 is hung on the water surface, and is arranged underwater if an underwater water level sensor L1 is adopted;

5) referring to the attached figure 1, the angle meters 33 are respectively arranged on each group of shield plates 61 according to the number of the gas shield dam module units;

6) referring to FIG. 1, a plurality of video monitors 34 are mounted above the locations to be monitored;

7) referring to fig. 9, mushroom-type one-way elastic aeration heads 6b and aeration head bases 6c are installed on the ground of the water facing side of the modular air shield dam;

referring to the attached drawings 1-3, 7, 8 and 9, the components related to the air path are connected through the main pipeline 21, and the components related to the air path are connected through the signal line, so that the installation of the modular air shield dam is completed.

Example 1

An air shield dam with water retaining capacity of 3.5 meters and length of 110 meters is built at the entrance of a river in a certain area, and the modular air shield dam is adopted.

The present embodiment is described with reference to the drawings and the above detailed description.

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

the main anchor bolt row 53a is made of 316L stainless steel;

the wedge-shaped pressing plate 54;

the rubber bladder 52 has a size of 10m (L) x 3.5(H), i.e., an aspect ratio equal to 2.85;

the outer layer weather-resistant rubber sheet 52d of the rubber airbag 52 is made of ethylene propylene diene monomer, and 3 parts of tetrapod-shaped zinc oxide whiskers and 7 parts of rutile titanium dioxide are added into 100 parts of rubber compound of the ethylene propylene diene monomer;

the steel shield 51 is 316L stainless steel;

the bus bar 23 is 11 groups of modular units/11 branch pipes 23 a.

The operation pressure of the modular air shield dam for fully jacking is 0.12MPa, and only a little pressure is properly supplemented or discharged for temperature change.

Comparative example 1

And constructing an air shield dam with the length of 3.5 meters and the length of 80 meters.

An underwater water level sensor L1;

2, 3, 10 groups of air bags 52 and steel shields 51 of manual and automatic control systems are controlled in a unified way;

the main anchor bolt is made of single carbon steel, and concrete is poured in the second stage;

the steel shield 51 is anticorrosive carbon steel, hot spray zinc 80 μm, epoxy zinc-rich 40 μm, epoxy mica iron intermediate paint 60 μm, and chlorosulfonated polyethylene finish paint 60 μm;

the air shield dam is in a wedge-shaped pressing plate 54 form;

the rubber bladder 52 has a size of 7.94m (L) x 3.5(H), i.e., an aspect ratio equal to 2.27;

the outer layer weather-resistant rubber sheet 52d of the rubber air bag 52 is made of 70% of ethylene propylene diene monomer rubber + 30% of natural rubber;

the production process of the rubber air bag 52 is a sectional vulcanization process of a flat vulcanizing machine;

the skeleton material used for the rubber air bag 52 is cord fabric.

When the air shield dam is initially debugged and lifted, the pressure of each air bag needs to be 0.3MPa, namely the overall pressure is 0.3MPa, and part of the rubber air bags 52 leak air and bubbles and are replaced or repaired;

the operating pressure of the full lifting top is 0.19MPa, the phenomenon of air leakage or slow air leakage of an air bag exists, frequent air supplement/pressure is needed, and the top end (water passing surface) of the air shield dam is difficult to level and is not in a straight line.

After running for 1 year, the rubber air bag 52 has foaming phenomenon; the chlorosulfonated polyethylene finish paint has the phenomena of falling off, cracking and fine lines.

TABLE 6 vulcanizate Properties

TABLE 6 anticorrosive performance of chlorosulfonated polyethylene topcoat

Performance of	Chlorosulfonated polyethylene finish
		Adhesion (cross-cut method) of grade less than or equal to	0
Impact resistance, cm ≥	50
		Flexibility of mm less than or equal to	1
Acid and alkali salt resistance (30d)	No bubbling, no rusting and no falling
		Damp and heat resistance (7d)	No bubbling, rustiness and falling off
Weather resistance (natural solarization in Guangzhou region in month) is less than or equal to
		Light loss, grade	3
Color change, grade	3
		Powdering, grading	2
Crack, grade	1

The test method comprises the following steps: HG/T2661-1995 chlorosulfonated polyethylene anticorrosive coating (two-component)

Comparing example 1 with comparative example 1, it can be seen that:

1) the comparison of the whole vulcanization process of the rubber airbag 52 produced by the autoclave with the hardness and other properties of the rubber material related to the compatibility of the rubber material and the production process of the flat vulcanizing machine shows that: the compactness, flexibility, integrity and quality of the rubber air bag 52 product are good, and the flexibility, strength, quality and integrity of the rubber air bag 52 product are difficult to ensure by a sectional vulcanization production process of a flat vulcanizing machine;

2) compared with the lapping structure of the cord fabric, the continuous reinforced skeleton fiber cord thread cocoon type structure of the rubber air bag 52 of the invention has incomparable flexibility, strength, aging resistance and service life of the whole rubber air bag 52; as is well known, the strength of the rubber bladder 52 is provided by reinforcing the carcass fibers, while the rubber material provides elasticity and air-tightness;

3) the ratio of the length to the width (water retaining height) of the rubber air bag is more than 2.5, so that the operation pressure of the air shield dam is reduced, and the operation reliability and safety of the air shield dam are improved;

4) each rubber air bag 52 (unit module) is independently controlled, so that the real-time performance is good, and the operation is synchronous;

5) compared with the traditional mode of a single main anchoring bolt, the main anchoring system 53 of the invention ensures the accurate positioning of the main bolt, omits secondary concrete pouring, and reduces the complexity of construction, the influence of human factors and the labor intensity;

6) the invention has the advantages of eliminating air leakage or slow air scattering of the air bag and improving the integral stability, reliability and safety of the air shield dam.

Example 2

A modular air shield dam with 2.5 m water retaining and 40m long is constructed as in example 1.

The water level sensor 32 is an underwater water level sensor L1;

the main anchor bolt row 53a is 304 stainless steel;

the wedge-shaped pressing plate 54;

the rubber bladder 52 has a size of 10m (L) x 2.5(H), i.e., an aspect ratio equal to 4.0;

the outer layer weather-resistant rubber sheet 52d of the rubber airbag 52 is made of ethylene propylene diene monomer, and 5 parts of tetrapod-shaped zinc oxide whiskers and 5 parts of rutile titanium dioxide are added into 100 parts of rubber compound of the ethylene propylene diene monomer;

the steel shield 51 is 304 stainless steel;

the bus bar 23 is 4 sets of modular units/4 branch pipes 23 a.

The operation pressure of the modular air shield dam for fully lifting the roof is 0.060MPa, and only a little pressure is properly supplemented or relieved for the change of the air temperature.

Example 3

A modular air shield dam with 2.5 m water retaining and 35 m long was constructed as in example 1.

The main anchor bolt row 63a is carbon steel;

the rubber bladder 52 has a size of 8.75m (L) x 2.5(H), i.e., an aspect ratio equal to 3.5;

the outer layer weather-resistant rubber sheet 52d of the rubber airbag 52 is made of ethylene propylene diene monomer, and 4 parts of tetrapod-shaped zinc oxide whiskers and 6 parts of rutile titanium dioxide are added into 100 parts of rubber compound of the ethylene propylene diene monomer;

the steel shield 51 is heavy anti-corrosion carbon steel, and is thermally sprayed with zinc 120 mu m, epoxy zinc-rich 40 mu m, epoxy mica iron intermediate paint 60 mu m and fluorocarbon finish paint 60;

the bus bar 23 is 4 sets of modular units/4 branch pipes 23 a.

The operation pressure of the modular air shield dam for fully jacking is 0.061MPa, and only a little pressure is properly supplemented or discharged when the temperature changes.

Comparative example 2

An air shield dam with a water retaining length of 2.5 m and a length of 35 m was constructed according to comparative example 1.

Manual and automatic control systems, 8 groups of air bags 52 and steel shields are controlled in a unified way;

the steel shield 51 is anticorrosive carbon steel, and is hot sprayed with zinc 120 μm, epoxy zinc-rich 40 μm, epoxy mica iron intermediate paint 60 μm, and acrylic polyurethane finish paint 60 μm;

the air shield dam is in a flat plate type upper and lower pressing plate form, namely the air bag is anchored by a perforation;

the rubber bladder 52 has a size of 4.37m (L) x 2.5(H), i.e., an aspect ratio equal to 1.75;

the outer layer weather-resistant rubber sheet 52d of the rubber air bag 52 is made of 80% of ethylene propylene diene monomer rubber plus 20% of natural rubber;

the production process of the rubber air bag 52 is a flat vulcanizing machine process;

the skeleton material used for the rubber bladder 52 is canvas.

The operation pressure of the full jacking of the air shield dam is 0.12MPa, and the phenomenon of air leakage or slow air leakage of an air bag needs frequent air supplement/pressure.

During debugging, the phenomenon that the individual rubber air bags 52 are torn from the perforated positions exists; the top end (water passing surface) of the air shield dam is difficult to level and is not in a straight line.

After running for 1 year, the rubber air bag 52 has foaming phenomenon; acrylic polyurethane finish paint has the phenomena of shedding, cracking and fine lines.

TABLE 7 anticorrosive performance of acrylic polyurethane finish

Performance of	Acrylic polyurethane finish paint
		Adhesion (cross-cut method) of grade less than or equal to	1
Impact resistance, cm ≥	50
		Flexibility of mm less than or equal to	1
Salt spray resistance (1000h)	No bubbling, no rusting and no cracking
		Weather resistance (1000h)	No bubbling, no rusting and no cracking
Acid and alkali resistance (168h)	No abnormality

The test method comprises the following steps: HG/T2454-2006 solvent type polyvinyl chloride coating (two-component)

Comparing examples 1 to 3 with comparative example 2, it can be seen that:

1) the process for producing the rubber air bag 52 by the flat vulcanizing machine is easy to delaminate and foam;

2) the reinforced framework fiber material 52c of the air bag is made of canvas and sizing materials, has high mechanical strength and hardness, but the air bag is stiff, the interlayer bonding is not good, the layering is easy, the flexibility of the air bag is poor, and the operation pressure is high;

3) the length-width ratio of the rubber air bag 52 is less than 2.5, the air bag is subjected to larger pressure, and the operation pressure of the air shield dam is large;

4) the overall control effect of all the rubber air bags 52 is poor;

5) a perforation anchoring mode, namely an easily torn rubber air bag 52;

6) the installation and construction of a single main anchor bolt are complicated, secondary concrete pouring is needed, the accurate positioning of the main bolt is difficult to ensure, the influence of human factors is great, and the labor intensity is high;

7) the acrylic polyurethane finish paint has insufficient anticorrosion capability in harsh environments such as damp heat and ultraviolet strong irradiation. Aspect ratio rationality analysis of the rubber bladder 52:

analysis of the rationality of the aspect ratio of the rubber bladder

TABLE 8 analysis of rationality of the aspect ratio of rubber bladders

When the length-width ratio (L/H) of the air bag is 2.5, 67.3 percent of the length of the air bag bears the steel shield and the water pressure (the width of the air bag is equal to the height of water retaining and the width is equal to 3 meters), the effective width of the borne pressure is about 40 percent, namely 26.9 percent of the area of the air bag bears the pressure; with a given width, the pressure required to raise the bladder to the design height is inversely proportional to the bladder length over a range of lengths. The engineering case can also see the actual working condition and effect of the air bag.

The modular gas shield dam has the advantages of strong functionality, good reliability, simplicity in installation and operation, good instantaneity, low failure rate, strong practicability, long service life, good landscape effect, ecological and environment friendliness and good water retaining and flood preventing effects; the production process is simple.

The invention forms a new economic growth point, has reference function to the development of relevant theories and materials of water conservancy and hydropower water retaining flood control facilities, and has important social benefit and economic benefit.

The present invention is not limited to the above-described embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. A modular air shield dam is characterized in that the modular air shield dam is a flood-proof water-retaining facility arranged at a river channel, an entrance to the sea, a reservoir, a garage, a subway entrance and the like;

the modular air shield dam comprises an inflation system (1) and a control system, wherein the inflation system is composed of a screw compressor (11), a Roots blower (12), an air storage tank (13), a filter (14) and a cold dryer (15); the manual control conveying system (2) consists of a main pipeline (21), a ball valve (22), a bus bar (23), a branch pipeline (23a), a proportional valve (24) and a pressure gauge (25); the automatic control system (3) is provided with a PLC, a pressure sensor (31), a water level sensor (32), an angle instrument (33) and a video monitor (34); a remote monitoring system (4); the dam comprises a dam body (5), a steel shield (51), a rubber air bag (52), a main anchoring system (53), a wedge-shaped pressing plate (54), a flexible hinge cover plate (55), an interval sealing (56), a side sealing (57), a restraining belt (58), a side pier plate (59) and the like; a deicing and anti-icing device (6);

a bus bar (23) of a manual control conveying system (2) is connected to a main pipeline (21) and consists 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);

according to the modular gas shield dam, an automatic control system (3) and a remote monitoring system (4)/SCADA (supervisory control and data acquisition) are interactively fed back, the pressure sensor (31), the water level sensor (32), the angle gauge (33) and the video monitor (34) are connected and monitored by a PLC (programmable logic controller), an HMI (human machine interface) and a shielding signal line to control and adjust the pressure and the flow of gas supply of the gas charging system (1), and the modular gas shield dam is unattended;

according to the modular gas shield dam, the remote monitoring system (4) is connected with the PLC of the automatic control system (3) and feeds back to each other to realize remote monitoring;

the modular air shield dam, the primary anchoring system (53) comprising: the main anchoring bolt row (53a), the root embedded part (53b), the wedge embedded part (53c), the main anchoring pouring positioning template (53d), the wedge pressing plate (54) and the flexible hinge cover plate (55);

a main anchoring bolt row (53a) of the modular air shield dam is composed of a plurality of screw rods, an anchoring row frame and nuts;

in the modular air shield dam, the screw rods and the nuts are made of 316L or 304 stainless steel or carbon steel, and the anchoring row frame is made of carbon steel;

the modular air shield dam comprises a steel shield (51) structure which comprises: a steel shield main plate (51a), a ribbed plate (51b), a wave breaker plate (51c), a top reinforcing pipe (51d) and a shield plate shaft (51 e);

the modular air shield dam is characterized in that a rubber air bag (52) is composed of an inner rubber sheet (52a), a middle rubber sheet (52b), a framework fiber cord (52c) and an outer weather-resistant rubber sheet (52 d);

according to the modular air shield dam, the anchoring of the air shield dam with the water retaining height of less than 2.5 meters can be flat-plate-type upper and lower pressing plates, and the anchoring of the air shield dam with the water retaining height of more than 2.5 meters is a wedge-shaped pressing plate (54).

2. The modular air shield dam of claim 1, wherein said modular air shield dam module unit is formed by a plurality of sets of air shield dam module units according to requirements, said air shield dam module units comprising: a single steel shield (51), a single rubber air bag (52), a ball valve (22), a pressure sensor (31), a proportional valve (24), a pressure gauge (25) and an angle gauge (33) which are connected in series with a branch pipeline (23a) of the busbar (23).

3. The modular gas shield dam of claim 1, wherein said bus bar (23) is made of welded 304 stainless steel tubing; setting the number of corresponding branch pipelines (23a) according to the unit number of the rubber air bags (52); a pressure sensor (31), a proportional valve (24), a pressure gauge (25) and a ball valve (22) are connected in parallel to form a single branch pipeline (23a), namely a modular unit, so that manual and automatic individual control is realized; all the branch pipelines (23a) are connected in parallel with the main pipeline (21) to form a whole.

4. The modular gas shield dam of claim 1, wherein the steel shield (51) is 304 stainless steel or 316L stainless steel or heavy duty carbon steel.

5. A modular air shield dam according to claim 2, characterized in that the length of the individual rubber air cells (52) of the modular units of the air shield dam is 10m or less, compared to the width of 2.5 or more.

6. The modular air shield dam of claim 2, wherein the material of the outer weather-resistant rubber sheet (52d) of the rubber bladder (52) is ethylene propylene diene monomer.

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

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