Sleeve capable of collecting rainwater

Abstract

A sleeve capable of collecting rainwater comprises a sleeve body and a plurality of one-way valves arranged at the top of the sleeve body. The sleeve body is a closed cavity of a hollow double-layer structure, and the one-way valve is used for collecting rainwater and storing the rainwater in the closed cavity. The sleeve can be applied to fireproof protection of a bridge cable, and an air pressure adjusting device is installed at the top of the sleeve. A communicating pipeline is arranged at the lower part; and the plurality of sleeves are connected into a communicating vessel through the communicating pipelines. The characteristic that rainfall in a local area is rich is fully utilized, rainwater is collected and applied to fireproof protection of the bridge inhaul cable, and the temperature of the steel cable can be kept at a relatively low level all the time; the principle of communicating vessels is utilized to ensure that water sources at all positions can mutually flow and automatically flow to required positions; durability is good, daily maintenance is little, and the automatic working capacity is high; the device is flexibly applied to the surface of an important inhaul cable needing to be protected, is convenient to install, is customized in shape according to a specific bridge, and can be well attached to steel cables of different bridges.

Description

Technical Field

[0001] The utility model relates to a sleeve capable of collecting rainwater, which can be applied to the field of bridge disaster resistance. Background Art

[0002] At present, there are few studies on the protection of bridge cables under fire at home and abroad, the proposed solutions are limited, and the engineering application is still in its infancy. There are two main ideas for cable fire protection: (1) the idea of ​​installing sprinkler devices, installing sprinkler facilities near bridge cables to prevent the spread of fire; (2) the idea of ​​heat insulation, applying fire retardant paint on the outer surface of the cable, wrapping it with thermal insulation materials such as rock wool, to prevent heat from being transferred to the cable. However, the above ideas are mainly based on building fire protection solutions. The cooling effect of sprinkler devices on extremely strong fires such as tanker fires needs to be studied, and the weather resistance of fire retardant coatings in outdoor environments is also difficult to guarantee. The above solutions are difficult to meet the requirements of bridge fire protection.

[0003] The existing suspension bridge protection solutions in the field include fire retardant coatings and thermal insulation layers, protection tubes, and water cooling.

[0004] Two water-cooling cylinders are assembled and placed outside the steel cable through fixed buckles, and there is a water-cooling pipe inside. It is built into the water-cooling cylinder, one end is connected to the water inlet pipe, and the other end is a water vapor exhaust hole, which is disclosed in CN112342913A. The limitations of this technical solution and product: if it fails over time, the protection of the cable protected there will not be guaranteed, so there is a safety hazard.

[0005] CN 116856262 A proposes a fire protection system suitable for cable-stayed bridges, which uses a protective sleeve unit, which is coated on the cable of the suspension bridge and connected to an external water source through a connecting pipe. The physical properties of water and the principle of communicating vessels are fully utilized to ensure that water sources in various places can flow to each other and automatically flow to the required positions, so that the temperature of the steel cable is always kept at a relatively low level in the event of a fire. Summary of the invention

[0006] Aiming at the fire protection of cable-stayed bridges in some rainfall-rich areas, this application proposes a sleeve that can collect rainwater, collect and store rainwater, and the sleeve can be used for fire protection of bridge cables. When the bridge is threatened by fire, the physical properties of water are used to keep the temperature of the steel cable at a lower level.

[0007] The technical solution is:

[0008] A sleeve capable of collecting rainwater comprises a sleeve body 1-1 and a plurality of one-way valves 1-4 arranged on the top of the sleeve body; the sleeve body 1-1 is a closed cavity with a hollow double-layer structure, the one-way valves 1-4 are used to collect rainwater and prevent evaporation, and the collected rainwater is stored in a cavity surrounded by the inner and outer walls of the sleeve body.

[0009] Further, the one-way valve 1-4 is a double-flap check valve, provided with a valve body 1-4-6;

[0010] and a pair of valve flaps 1-4-3 disposed in the valve body 1-4-6;

[0011] and two horizontal pins 1-4-1, arranged in upper and lower layers, located below the valve disc 1-4-3;

[0012] and two springs 1-4-2;

[0013] in:

[0014] The valve body 1-4-6 has a top end configured as a water inlet and a bottom end configured as a water outlet;

[0015] Pin holes 1-4-3-1 are provided at the joints of the two valve flaps 1-4-3, and grooves 1-4-3-2 are provided on the lower surfaces of the valve flaps 1-4-3;

[0016] Two pins 1-4-1 are arranged in parallel and connected to the side wall of the valve body 1-4-6. They are divided into a near rod and a far rod according to their height positions. A pair of valve discs and a pair of springs are respectively sleeved on the near rod through their respective hole structures.

[0017] Hooks 1-4-2-1 and extensions 1-4-2-2 are provided at both ends of the spring 1-4-2, one end of which is connected to the remote rod through the hook 1-4-2-1, and the other end of which is embedded in the groove 1-4-3-2 on the lower surface of the valve disc 1-4-3 through the extension 1-4-2-2.

[0018] Furthermore, the one-way valve adjusts the opening and closing state of the valve disc according to the supporting force of the spring extension leg 1-4-2-2 and the pressure on the upper surface of the valve disc: when the pressure on the upper surface of the valve disc is less than or equal to the supporting force of the spring extension leg 1-4-2-2, the valve disc 1-4-3 of the one-way valve is horizontal, so that the water inlet of the one-way valve is in a closed state; when the pressure on the upper surface of the valve disc is greater than the supporting force of the spring extension leg 1-4-2-2, the valve disc 1-4-3 will flip downward around the rod, so that the water inlet of the one-way valve is in an open state.

[0019] Furthermore, the one-way valve also includes a filter screen 1-4-4, which is arranged on the top of the valve body 1-4-6 and is used to filter rainwater to avoid clogging of the sleeve.

[0020] Furthermore, the sleeve body is provided with a fixing buckle 3-1 and an auxiliary connecting pipe 2-2 at its lower part, the fixing buckle is used to install and attach the sleeve body to the cable, and the auxiliary connecting pipe is used to access the water source.

[0021] Furthermore, the sleeve body is provided with an air pressure regulating device 1-2 on its top for maintaining the air pressure balance in the sleeve. Furthermore, the air pressure regulating device 1-2 includes a high-pressure exhaust valve and a low-pressure air supply valve.

[0022] Furthermore, the sleeve is enclosed by a plurality of blocks with independent functions, and each block is a hollow double-layer structure and works independently. Each block is equipped with an independent one-way valve, an air pressure regulating device and an auxiliary connecting pipeline.

[0023] Furthermore, multiple sleeves are wrapped around the outside of the cable to be protected for fire protection; the air pressure regulating device arranged on the top of the sleeve works together with the connecting pipe arranged at the bottom to connect the multiple sleeves into a communicating vessel, and water can flow between different sleeves.

[0024] Compared with the existing solutions, the above technical solution has the following beneficial effects:

[0025] The rainwater collecting sleeve proposed in this application makes full use of the characteristics of abundant rainfall in local areas to collect rainwater. The sleeve can be used in the fire protection of bridge cables, and can always keep the temperature of the steel cables at a relatively low level; it uses the principle of communicating vessels to ensure that water sources in various places can flow to each other and automatically flow to the required location; it has good durability, less daily maintenance, and strong automation ability; it is flexibly used on important cable surfaces that need to be protected, is easy to install, and the shape is customized according to the specific bridge, and can fit the steel cables of different bridges well. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 (a) and (b) are schematic diagrams of sleeves that can collect rainwater.

[0027] Figure 2 (a), (b), (c), and (d) are structural diagrams of one-way valve-wafer double-flap check valve.

[0028] Figure 3 It is a schematic diagram of the explosion of a one-way valve-wafer double-flap check valve.

[0029] Figure 4 This is a diagram of the one-way valve-valve disc structure (from a bottom-up perspective).

[0030] Figure 5 This is a one-way valve-spring structure diagram.

[0031] Figure 6Schematic diagram of the one-way valve-valve disc, spring, and pin connection (from a bottom-up perspective).

[0032] Figure 7 (a) and (b) are schematic diagrams of the free opening and closing of the sleeve composed of two independent functional blocks.

[0033] Figure 8 (a), (b) and (c) are schematic diagrams of a multi-piece combined sleeve.

[0034] Fig. 9 This is a schematic diagram of the implementation of the application scenario of this application.

[0035] Fig.10 Schematic diagram of the sleeves and installation structure in area B of Example: (a) sling protection sleeve, (b) main cable protection sleeve.

[0036] Fig.11 Schematic diagram of rainwater collection.

[0037] Fig.12 It is a simplified working diagram of the fire protection and connection system.

[0038] Reference numerals:

[0039] Sleeve 1: sleeve body 1-1, air pressure regulating device 1-2, rotary bearing 1-3, one-way valve 1-4;

[0040] Pin 1-4-1, spring 1-4-2, fixing hook 1-4-2-1, extension foot 1-4-2-2, valve disc 1-4-3, pin hole 1-4-3-1, groove 1-4-3-2, filter screen 1-4-4, bolt 1-4-5, valve body 1-4-6;

[0041] Connecting pipe 2: main connecting pipe 2-1, auxiliary connecting pipe 2-2, water supply pipe 2-3;

[0042] Connecting accessory 3: fixing buckle 3-1;

[0043] Main cable 5, sling 6;

[0044] Water 7. DETAILED DESCRIPTION

[0045] The technical solution provided by the present application will be further described below in conjunction with specific embodiments and accompanying drawings. The advantages and features of the present application will become more apparent with the following description.

[0046] Example

[0047] like Figure 1As shown, a sleeve capable of collecting rainwater comprises a sleeve body 1-1 and a plurality of one-way valves 1-4 arranged on the top of the sleeve body, wherein the sleeve body 1-1 is a closed cavity with a hollow double-layer structure (as an embodiment, referring to the one-way valve 1-4 previously disclosed in CN116856262A), and the one-way valve 1-4 is used to collect rainwater and prevent evaporation, and the collected rainwater can be stored in a cavity surrounded by the inner and outer walls of the sleeve body.

[0048] The one-way valve 1-4 has a structure as follows Figure 2 As shown, (a) and (b) are perspectives from top to bottom, and (c) and (d) are perspectives from bottom to top.

[0049] Specifically, Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the one-way valve 1-4 is a double-flap check valve, which is provided with a valve body 1-4-6;

[0050] and a pair of valve flaps 1-4-3 disposed in the valve body 1-4-6;

[0051] and two horizontal pins 1-4-1, arranged in upper and lower layers, located below the valve disc 1-4-3;

[0052] and two springs 1-4-2;

[0053] in:

[0054] The valve body 1-4-6 has a top end configured as a water inlet and a bottom end configured as a water outlet;

[0055] Pin holes 1-4-3-1 are provided at the joints of the two valve flaps 1-4-3, and grooves 1-4-3-2 are provided on the lower surfaces of the valve flaps 1-4-3;

[0056] Two pins 1-4-1 are arranged in parallel and connected to the side wall of the valve body 1-4-6. They are divided into a near rod and a far rod according to their height positions. A pair of valve discs and a pair of springs are respectively sleeved on the near rod through their respective hole structures; (here the spring forms a force point through the near rod)

[0057] A hook 1-4-2-1 and an extension leg 1-4-2-2 are provided at both ends of the spring 1-4-2. One end of the spring 1-4-2 is connected to the remote rod through the hook 1-4-2-1, and the other end of the spring 1-4-3-2 is embedded in the groove 1-4-3-2 on the lower surface of the valve disc 1-4-3 through the extension leg 1-4-2-2; (here, the spring forms two points of force through its two ends)

[0058] As mentioned above, the spring forms three fulcrums in the one-way valve structure space through the two pins 1-4-1 and the valve disc, so that it can stably support the static load change of the surface water accumulation on the valve disc in the application and trigger the mechanical work and state recovery due to energy conversion when the threshold is reached.

[0059] As an embodiment, by way of example and not limitation, the valve body is a cylinder, usually made of metal material, having certain strength and corrosion resistance.

[0060] The one-way valve adjusts the opening and closing state of the valve disc according to the supporting force of the spring extension leg 1-4-2-2 and the pressure on the upper surface of the valve disc: when the pressure on the upper surface of the valve disc is less than or equal to the supporting force of the spring extension leg 1-4-2-2, the valve disc 1-4-3 of the one-way valve is horizontal, so that the water inlet of the one-way valve is in a closed state; when the pressure on the upper surface of the valve disc is greater than the supporting force of the spring extension leg 1-4-2-2, the valve disc 1-4-3 will flip downward around the rod, so that the water inlet of the one-way valve is in an open state.

[0061] Specifically, the one-way valve at the top of the sleeve works as follows:

[0062] The support force provided by the spring extension 1-4-2-2 is F, the area of ​​the valve disc 1-4-3 is S, and the rainfall pressure is P. Then the pressure F on the upper surface of each valve disc due to rainfall 压 =PS, according to the actual rainfall conditions, the opening and closing states of the valve disc are as follows:

[0063] When there is no rainfall or the rainfall intensity is too small, F 压 Less than or equal to F, the valve flap 1-4-3 of the one-way valve is in a horizontal position under the support of the spring extension leg 1-4-2-2, keeping the water inlet of the one-way valve in a closed state to prevent the rainwater stored inside the sleeve from evaporating;

[0064] When the rainfall reaches a certain intensity, F 压 When the pressure is greater than F, the valve flap 1-4-3 of the one-way valve flips downward under the impact of rainwater, so that the water inlet of the one-way valve is in an open state, and rainwater enters the sleeve body 1-1;

[0065] When the rain stops, the valve flap 1-4-3 of the one-way valve is reset under the action of the spring 1-4-2, so that the water inlet of the one-way valve is in a closed state to prevent rainwater from evaporating.

[0066] The spring support strength can be reasonably adjusted according to the rainfall intensity of the environment where the beam is located to ensure that the valve can be opened during rainfall.

[0067] Furthermore, the one-way valve also includes a filter screen 1-4-4, which is arranged on the top of the valve body 1-4-6 and is used to filter rainwater to avoid clogging of the sleeve.

[0068] The above-mentioned sleeve capable of collecting rainwater is applied to the fire protection of cable-stayed bridges in certain rainfall-rich areas. The sleeve capable of collecting rainwater is used to collect and store rainwater, and the sleeve can be applied to the fire protection of bridge cables. When a bridge is threatened by fire, the physical properties of water are used to keep the temperature of the steel cable at a lower level.

[0069] Specifically, the sleeve capable of collecting rainwater can be applied to fire protection work of suspension bridges, cable-stayed bridges, and even cable-stayed arch bridges, and its form varies according to the height and inclination of the cable. The setting height of the sleeve can be determined according to the situation of bridge fire and the demand for fire protection. Multiple sleeves capable of collecting rainwater are wrapped around the outside of the cable to be protected through a fixing device for fire protection, and the lower parts of each sleeve are connected by a connecting pipe.

[0070] Furthermore, a fixing buckle 3-1 is provided at the lower part of the sleeve, and the sleeve is installed and attached to the outer side of the cable to be protected through the fixing buckle 3-1.

[0071] Furthermore, the communicating pipe comprises a main communicating pipe 2-1 and an auxiliary communicating pipe 2-2; the lower part of the sleeve is provided with the auxiliary communicating pipe 2-2, and the sleeve is connected to the main communicating pipe 2-1 through the auxiliary communicating pipe 2-2.

[0072] Furthermore, each sleeve is directly connected to the main communicating pipe 2-1 through the auxiliary communicating pipe 2-2, or is indirectly connected to the main communicating pipe 2-1 after being connected to other sleeves through the auxiliary communicating pipe 2-2.

[0073] Furthermore, the main connecting pipe 2-1 can be connected to an external water source through a water supply pipe 2-3 to provide sufficient water for the sleeve. The type of external water source is not limited, including nearby water sources, groundwater, etc.

[0074] Furthermore, the sleeve is equipped with an air pressure regulating device 1-2, which is used to maintain the air pressure balance in the sleeve, including a high-pressure exhaust valve 1-2-1 and a low-pressure air supply valve 1-2-2. When the air pressure rises due to local heat, the high-pressure exhaust valve is triggered to open and release air, so as to prevent the pressure in the sleeve from accumulating too high and causing instability, thereby hindering the flow of liquid between the sleeves.

[0075] Furthermore, if Figure 7 As shown, the sleeve is a multi-petal design, which can be opened and closed freely, making it easy to install and replace, while improving the reliability of the protection system. The number of petals depends on the actual characteristics and needs of the project.

[0076] like Figure 8As shown, the sleeve is enclosed by four, three, and two blocks with independent functions, and each is a hollow double-layer structure and works independently; adjacent blocks are connected by rotating bearings 1-3, and each block with independent functions is equipped with an independent one-way valve, air pressure regulating device and auxiliary connecting pipeline.

[0077] The air pressure regulating device at the top of the sleeve works in conjunction with the connecting pipe at the bottom to connect multiple sleeves into a communicating vessel, so that water can flow between different sleeves. Its working principle is: when a local fire occurs, the temperature of the sleeve rises due to heat, and the internal water vaporizes into water vapor to absorb heat and is discharged from the air pressure regulating device. At the same time, water is continuously added from the bottom, and the temperature of the sleeve and the sling is always controlled at a relatively low level by using the physical properties of water.

[0078] like Fig. 9 The application scenario shown is: taking the cable of a suspension bridge as an example, the object to be protected is the cable (including suspenders and main cables), which is an existing component of the suspension bridge.

[0079] The sleeves that can collect rainwater can be installed on the outside of all slings, or only on the slings that need to be protected. The collected rainwater flows between the sleeves. Fig. 9 In area A, each sleeve for wrapping the sling is directly connected to the main communicating pipe 2-1 through the lower flexible auxiliary communicating pipe 2-2; in area B, the lower part of each sleeve for wrapping the sling is connected to the main communicating pipe 2-1 through the flexible auxiliary communicating pipe 2-2, and the top is connected to the sleeve for wrapping the main cable through the auxiliary communicating pipe 2-2. Fig.10 As shown. In this way, combined with the air pressure regulating device, each sleeve is connected into a communicating vessel to ensure the smooth flow of water between different sleeves. When a local fire occurs, the water vaporization in the sleeves around the fire is reduced, and the water in the remaining sleeves is quickly replenished into the sleeve affected by the fire through the connecting system, so that the water level in the sleeve affected by the fire is always maintained at a safe height; the communicating vessel can connect the water sources in various places into a whole that can flow freely with each other.

[0080] like Fig.11 As shown, when it rains, the sleeve that can collect rainwater can collect rainwater through a one-way valve. When a local fire occurs, the rainwater in the sleeve of the fire area evaporates and dissipates heat, the high-pressure exhaust device opens, and the water vapor is discharged, controlling the temperature of the sling within 100°C. At the same time, the rainwater in other sleeves continuously replenishes the sleeve in the fire area to maintain the water level at a safe height. The physical properties of water are used to keep the temperature of the sleeve and the sling at a relatively low level. The working principle is as follows: Fig.12 shown.

[0081] The connecting pipe is also connected to an external water source to provide a more sufficient water source for the fire protection of the sleeve when the stored rainwater is insufficient.

[0082] The sleeve is made of a material with good thermal conductivity and durability, for example but not limited to stainless steel. Good thermal conductivity and durability means that the thermal conductivity is 5W / (m·℃) or above and can withstand the erosion of the natural environment in the wild without fire.

[0083] The above description is only a description of the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any changes or modifications made by any person skilled in the art based on the above disclosed technical contents shall be deemed as equivalent effective embodiments and shall fall within the scope of protection of the technical solution of the present application.

Claims

1. A sleeve capable of collecting rainwater, characterized in that: It comprises a sleeve body (1-1) and a plurality of one-way valves (1-4) arranged on the top of the sleeve body; the sleeve body is a closed cavity with a hollow double-layer structure; the one-way valves (1-4) are used to collect rainwater and prevent evaporation; the collected rainwater is stored in a cavity surrounded by the inner and outer walls of the sleeve body.

2. The sleeve according to claim 1, characterized in that The one-way valve (1-4) is a double-flap check valve, provided with a valve body (1-4-6); and a pair of valve flaps (1-4-3) arranged in the valve body (1-4-6); and two horizontal pins (1-4-1) arranged in upper and lower layers and located below the valve disc (1-4-3); and two springs (1-4-2); in: The valve body (1-4-6) has a top end configured as a water inlet and a bottom end configured as a water outlet; A pin hole (1-4-3-1) is provided at the joint of the two valve flaps (1-4-3), and a groove (1-4-3-2) is provided on the lower surface of the valve flap (1-4-3); Two pins (1-4-1) are arranged in parallel and connected to the side wall of the valve body (1-4-6), and are divided into a near rod and a far rod according to their height positions. A pair of valve flaps and a pair of springs are respectively sleeved on the near rod through their respective hole structures. A hook (1-4-2-1) and an extension foot (1-4-2-2) are provided at both ends of the spring (1-4-2); one end of the spring is connected to the remote rod through the hook (1-4-2-1), and the other end of the spring is embedded in a groove (1-4-3-2) on the lower surface of the valve disc (1-4-3) through the extension foot (1-4-2-2).

3. The sleeve according to claim 2, characterized in that The one-way valve adjusts the opening and closing state of the valve disc according to the supporting force of the spring extension leg (1-4-2-2) and the pressure on the upper surface of the valve disc: when the pressure on the upper surface of the valve disc is less than or equal to the supporting force of the spring extension leg (1-4-2-2), the valve disc (1-4-3) of the one-way valve is horizontal, so that the water inlet of the one-way valve is in a closed state; when the pressure on the upper surface of the valve disc is greater than the supporting force of the spring extension leg (1-4-2-2), the valve disc (1-4-3) will turn downward around the rod, so that the water inlet of the one-way valve is in an open state.

4. The sleeve according to claim 2, characterized in that The one-way valve also includes a filter screen (1-4-4), which is arranged on the top of the valve body (1-4-6).

5. The sleeve according to claim 1, characterized in that The sleeve body (1-1) is provided with a fixing buckle (3-1) and an auxiliary connecting pipe (2-2) at its lower part, the fixing buckle is used to install and attach the sleeve body to the cable to be protected, and the auxiliary connecting pipe is used to connect to a water source.

6. The sleeve according to claim 1, characterized in that The top of the sleeve body (1-1) is equipped with an air pressure regulating device (1-2) for maintaining the air pressure balance in the sleeve.

7. The sleeve according to claim 6, characterized in that The air pressure regulating device (1-2) comprises a high-pressure exhaust valve and a low-pressure air supply valve.

8. The sleeve according to claim 6, characterized in that The sleeve is enclosed by a plurality of blocks with independent functions, each of which is a hollow double-layer structure and works independently. Each block is equipped with an independent one-way valve (1-4), an air pressure regulating device (1-2) and an auxiliary connecting pipe (2-2).

9. The sleeve according to claim 6, characterized in that A plurality of sleeves are wrapped around the outside of the cable to be protected for fire protection; an air pressure regulating device arranged on the top of the sleeve works in coordination with a connecting pipe arranged at the bottom to connect the plurality of sleeves into a communicating vessel, so that water can flow between different sleeves.

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