Concrete intake and exhaust well

Abstract

The utility model discloses a concrete intake and exhaust well, and relates to the technical field of maintenance facilities. According to the technical key points, the device comprises a concrete well body and a conveying pipe, a through hole is formed in the upper edge of a well body of the concrete well body, and a waterproof sleeve is installed in the through hole; the conveying pipe is made of materials with the water flow module loss coefficient and the mass smaller than those of steel pipes. Part of the pipe section of the conveying pipe sequentially penetrates through the middle positions of the two waterproof sleeves in the axis direction of the through hole, and gaps between the waterproof sleeves and the conveying pipe are filled with waterproof plates with flexibility and supporting performance. According to the concrete intake and exhaust well, the water hammer effect in the medium conveying process can be reduced, the structure of the whole well body can be simplified, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of maintenance facilities, in particular to a concrete air intake and exhaust well. BACKGROUND

[0002] The air intake and exhaust well is a key facility in the underground pipeline system, such as a concrete air intake and exhaust well is often set at equal intervals in a long-distance water pipeline project, which mainly functions to exclude the air accumulated in the pipeline through the air intake and exhaust valve in the air intake and exhaust well, so as to avoid the air resistance in the pipeline affecting the fluid conveying efficiency, and when water hammer occurs, the air intake and exhaust valve in the air intake and exhaust well can automatically enter the air to avoid negative pressure, because when the negative pressure forms a vacuum in the pipeline, the water column may separate to form a steam cavity, which produces more serious water hammer in the pipeline.

[0003] The existing air intake and exhaust well is provided with a through hole on the well wall, a waterproof sleeve is arranged in the through hole, a large-diameter water conveying steel pipe passes through the waterproof sleeve, and an annular steel plate, also known as a wing ring, is welded on the outside of the middle position of the protective sleeve, which mainly functions to anchor the waterproof sleeve and prevent water. Because the inner wall of the large-diameter water conveying steel pipe has a large resistance to fluid, water hammer effect is easily generated during use, and therefore the following measures need to be taken during installation of the steel pipe to solve the problem, a baffle ring is welded on the outer side of the large-diameter water conveying steel pipe along the circumferential direction, the baffle ring is generally opposite to the center line of the concrete air intake and exhaust well wall in the initial state, and the baffle ring is used for positioning and auxiliary sealing; the periphery of the baffle ring also needs to be filled with oil hemp during construction, because the oil hemp has elastic buffering and sealing functions, when water hammer effect occurs, the steel pipe drives the baffle ring to move, which is limited within the oil hemp filling range; and asbestos cement needs to be filled at both ends of the oil hemp filling area for sealing between the waterproof sleeve and the steel pipe. Obviously, this will increase the complexity of the overall structure of the air intake and exhaust well and affect the construction efficiency. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a concrete air intake and exhaust well, which can simplify the overall structure of the air intake and exhaust well and improve the construction efficiency.

[0005] The above-mentioned object of the present application is realized by the following technical scheme:

[0006] A concrete air intake and exhaust well, comprising a concrete well body and a conveying pipe for conveying medium, characterized in that: a through hole is arranged on the upper half of the well wall of the concrete well body along the radial direction thereof, a waterproof sleeve is fixedly installed at the junction of the well wall of the concrete well body and the through hole, and a wing ring is welded on the outside of the waterproof sleeve, and the wing ring is embedded in the well wall of the concrete well body at the corresponding position.

[0007] The conveying pipe is made of a material with a smaller flow module loss coefficient and mass than that of the steel pipe;

[0008] The part of the conveying pipe sequentially passes through the middle positions of the two waterproof sleeve pipes along the axial direction of the through hole, and the gap between the waterproof sleeve pipes and the conveying pipe is filled with waterproof plates with flexibility and support;

[0009] The conveying pipe is provided with an air inlet and outlet valve on the pipe body in the concrete well body.

[0010] Further, the conveying pipe is a glass steel reinforced pipe.

[0011] Further, the waterproof plate is made of high-pressure polyethylene closed-cell foam board.

[0012] Further, the conveying pipe and the air inlet and outlet valve are connected together by a flange unit.

[0013] Further, the flange unit comprises a fixed flange and a flange short pipe, the fixed flange is fixedly arranged at the lower end of the air inlet and outlet valve, the flange part of the flange short pipe and the fixed flange are connected by fastening bolts and fastening nuts, and the lower end of the pipe body section of the flange short pipe is fixedly connected with the conveying pipe.

[0014] Further, the conveying pipe is provided with a mounting hole at a position corresponding to the flange short pipe, and the lower end of the pipe body section of the flange short pipe is inserted into the mounting hole and fixed together by hand lay-up method.

[0015] Further, the flange unit comprises a fixed flange and a flange short pipe, the fixed flange is fixedly arranged at the lower end of the air inlet and outlet valve, the flange part of the flange short pipe and the fixed flange are connected by fastening bolts and fastening nuts, and the lower end of the pipe body section of the flange short pipe is fixedly connected with the conveying pipe.

[0016] Further, the conveying pipe is provided with a mounting hole at a position corresponding to the flange short pipe, and the lower end of the pipe body section of the flange short pipe is inserted into the mounting hole and fixed together by hand lay-up method.

[0017] Further, the lower side of the through hole and the bottom of the concrete well body have a height difference, which can form a gap between the part of the conveying pipe in the concrete well body and the bottom of the concrete well body, and a concrete cushion is arranged in the gap between the conveying pipe and the bottom of the concrete well body, and the upper side of the concrete cushion abuts against the lower side of the conveying pipe.

[0018] Further, a prefabricated cover plate is arranged at the upper end of the concrete well body, and a crooked stick-shaped air hole is fixedly arranged at the center of the prefabricated cover plate.

[0019] Therefore, the present application has at least one of the following beneficial technical effects:

[0020] The water flow module of the application is made of material with smaller loss coefficient than steel pipe, so that the resistance of the fluid medium during the process of conveying medium can be significantly reduced, and the water hammer effect of the conveying pipe can be improved accordingly. On this basis, the blocking ring, oil, hemp and asbestos cement between the conveying pipe and the waterproof sleeve are all removed and replaced with a unified material waterproof board, so that the construction steps can be simplified and the construction effect can be effectively improved during construction. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of the application;

[0023] Figure 2 It is a large-scale drawing of the well wall of the concrete well body, wherein one part of the well wall is provided with a waterproof sleeve;

[0024] Figure 3 It is a schematic diagram of the connection state of the fixed flange and the flange short pipe below the air inlet and outlet valve;

[0025] Figure 4 It is a schematic diagram of the structure of the flange short pipe.

[0026] Reference signs: 1, concrete well body; 2, conveying pipe; 3, through hole; 4, waterproof sleeve; 5, wing ring; 6, waterproof board; 7, air inlet and outlet valve; 8, flange unit; 81, fixed flange; 82, flange short pipe; 9, concrete cushion block; 10, prefabricated cover plate; 11, air vent hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the technical solutions in the embodiments of the application will be described clearly and completely below. Obviously, the described embodiments are some embodiments of the application, not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor also belong to the scope of protection of the application.

[0028] As Figure 1 and Figure 2As shown, the concrete air intake and exhaust well disclosed in the present application comprises a concrete well body 1 and a conveying pipe 2 for conveying medium, a through hole 3 is arranged on the lower half of the well body 1 along the radial direction thereof, a waterproof sleeve 4 is fixedly arranged at the junction of the well wall of the concrete well body 1 and the through hole 3, a wing ring 5 is welded to the outer side of the waterproof sleeve 4, and the wing ring 5 is embedded in the well wall of the concrete well body 1 at the corresponding position;

[0029] The conveying pipe 2 is made of a material with smaller water flow module loss coefficient and mass than steel pipe;

[0030] Part of the pipe section of the conveying pipe 2 passes through the middle positions of the two waterproof sleeves 4 along the axis direction of the through hole 3, and a waterproof plate 6 with flexibility and support is filled in the gap between the waterproof sleeve 4 and the conveying pipe 2;

[0031] An air intake and exhaust valve 7 is arranged on the pipe section of the conveying pipe 2 in the concrete well body 1.

[0032] In the above embodiment, the through hole 3 arranged on the lower half of the well body 1 of the concrete well body 1 is used to facilitate the passage of the conveying pipe 2 for conveying medium through the inside thereof, in order to improve the sealing performance of the air intake and exhaust well, the waterproof sleeve 4 is arranged in the through hole 3, the wing ring 5 is welded to the outer side of the waterproof sleeve 4, and the air intake and exhaust valve 7 arranged on the pipe section of the conveying pipe 2 in the concrete well body 1 can realize the effect of introducing air into the conveying pipe 2 or exhausting air in the conveying pipe 2 according to the requirement. This part is the same as the structure of the existing air intake and exhaust well, and thus is not described herein.

[0033] In the present application, the material (such as glass steel reinforced pipe, polytetrafluoroethylene pipe, polyvinyl chloride pipe, etc.) of the conveying pipe 2 for conveying medium is superior to steel pipe in terms of water flow module loss coefficient and mass, so that the friction between the fluid medium and the inner wall of the conveying pipe 2 can be effectively reduced in the process of conveying medium, thereby effectively reducing the risk of water hammer effect caused thereby, and the damage to the conveying pipe 2 caused by the water hammer effect can also be effectively reduced. Since the mass of the conveying pipe 2 is also smaller than that of the steel pipe, the operation of the construction personnel in the process of installing the conveying pipe 2 is more convenient, and the labor intensity can be effectively reduced.

[0034] In the present application, the waterproof plate 6 with flexibility and support (such as high-pressure polyethylene closed-cell foam plate, cross-linked polyethylene plate, polyimide foam plate, etc.) is used to replace the existing technology of blocking ring, oil and asbestos cement between the conveying pipe 2 and the waterproof sleeve 4. Since the concrete air intake and exhaust well of the present application only needs to fill one kind of material when filling the gap between the conveying pipe 2 and the waterproof sleeve 4, compared with the existing technology of filling multiple materials between the conveying pipe 2 and the waterproof sleeve 4, the construction process can be obviously simplified, and the construction efficiency can be improved.

[0035] Further, the conveying pipe 2 is a glass steel reinforced pipe.

[0036] In the above embodiment, the glass steel reinforced pipe is a glass fiber reinforced plastic reinforced pipe. The pipe is made of glass fiber and its products as reinforcing materials, thermosetting resin as matrix material, and winding process. The pipe has annular reinforcing ribs on the outer surface of the pipe wall. The outer reinforcing ribs significantly improve the bending resistance, compression resistance and external load resistance of the pipe by increasing the moment of inertia of the pipe section. When subjected to water hammer effect, the reinforcing ribs work with the pipe wall to reduce vibration transmission and fatigue damage. The reinforcing ribs also increase the contact effect between the remaining waterproof boards 6, so that when the conveying pipe 2 is displaced or deformed, the waterproof boards 6 adaptively change to ensure the sealing between the waterproof sleeve 4 and the conveying pipe 2.

[0037] In addition, compared with the traditional steel pipe, the cost of the glass steel reinforced pipe is only about 1 / 3 of that of the ordinary steel pipe, and it has excellent corrosion resistance. When conveying media with high risk (such as oil), the glass steel reinforced pipe can improve the safety of the conveying process by using its good insulation. The weight of the glass steel reinforced pipe is also lighter than that of the ordinary steel pipe, which makes it more convenient for workers to install and construct. In addition, the water flow friction loss coefficient f of the glass steel reinforced pipe is about 0.0009 (the water flow friction loss coefficient is a key parameter describing the energy loss caused by friction when the fluid flows in the pipe). The water flow friction loss coefficient of the ordinary steel pipe is about 0.0018. Compared with the ordinary steel pipe, the water flow friction loss coefficient of the glass steel reinforced pipe is significantly lower. Accordingly, the glass steel reinforced pipe can effectively reduce the kinetic energy loss of the fluid when conveying media, thereby improving the conveying capacity. In addition, the low resistance effect of the inner wall of the glass steel reinforced pipe on the conveying medium can reduce the turbulence intensity, so that the medium flow velocity changes more gently, and the peak pressure of the water hammer shock wave is reduced. Therefore, the conveying pipe 2 of the present application selects the glass steel reinforced pipe.

[0038] Further, the material of the waterproof board 6 is high-pressure polyethylene closed-cell foam board.

[0039] In the above embodiment, the high-pressure polyethylene closed-cell foam board has a uniform and fine closed-cell honeycomb structure inside, and the compressive strength is greater than or equal to 0.15 MPa. The closed-cell structure is uniformly distributed by independent bubbles to achieve pressure dispersion. It can withstand the continuous pressure of moderate load (for example, in the scenario of filling the building ground heat insulation layer or concrete expansion joint, it can effectively support the weight of the upper structure). In addition, the recovery rate of the high-pressure polyethylene closed-cell foam board after being pressed can reach more than 95% during use. Therefore, the high-pressure polyethylene closed-cell foam board is uniformly filled in the gap between the waterproof sleeve 4 and the conveying pipe 2. It not only can provide good support effect to the conveying pipe 2 to ensure its stability during use, but also can adapt to various dynamic load scenarios (such as displacement or vibration of the pipe due to thermal expansion and cold contraction or water hammer effect) during use of the conveying pipe 2 by using the excellent pressure recovery rate of the high-pressure polyethylene closed-cell foam board. At the same time, this material also has good waterproof performance, can effectively prevent water penetration, and has small density, light weight, good flexibility, strong corrosion resistance, heat preservation and insulation. Based on the above performance of the high-pressure polyethylene closed-cell foam board, the high-pressure polyethylene closed-cell foam board is used to replace the materials such as the check ring, oil hemp and asbestos cement in the prior art. Therefore, the overall structure of the concrete air inlet and exhaust well can be effectively simplified during construction, and the construction efficiency of workers can be improved.

[0040] Further, as shown in Figure 1 and Figure 3 , the conveying pipe 2 and the air inlet and exhaust valve 7 are connected together by the flange unit 8.

[0041] In the above embodiment, the air inlet and exhaust valve 7 is connected to the conveying pipe 2 through the flange unit 8. Therefore, it is convenient for subsequent workers to overhaul and replace the air inlet and exhaust valve 7.

[0042] Further, as shown in Figure 1 , Figure 3 and Figure 4 , the flange unit 8 includes a fixed flange 81 and a flange short pipe 82. The fixed flange 81 is fixedly arranged at the lower end of the air inlet and exhaust valve 7. The flange part of the flange short pipe 82 is connected to the fixed flange 81 through fastening bolts and fastening nuts. The lower end of the pipe body section of the flange short pipe 82 is fixedly connected to the conveying pipe 2.

[0043] In the above embodiment, the fixed flange 81 below the air inlet and exhaust valve 7 is connected to the flange part of the upper end of the flange short pipe 82 through fastening bolts and fastening nuts. The lower end of the pipe body section of the flange short pipe 82 is connected to the conveying pipe 2. This structure can ensure that the connection between the two is firm enough during normal use to prevent leakage of the medium from the connection between the two. Since the air inlet and exhaust valve 7 is installed on the flange short pipe 82 by cooperating the fastening bolts and the fastening nuts, when the air inlet and exhaust valve 7 is subsequently overhauled and replaced, the workers only need to remove the fastening bolts and the fastening nuts. Therefore, the convenience of subsequent overhauling and replacement of the air inlet and exhaust valve 7 is improved.

[0044] Further, the conveying pipe 2 is provided with a mounting hole at a position corresponding to the flange short pipe 82, and the lower end of the pipe body section of the flange short pipe 82 is inserted into the mounting hole and fixed together by hand lay-up method.

[0045] In the above embodiment, the conveying pipe 2 of the present application is a glass fiber reinforced plastic pipe, and the main material is glass fiber. After the lower end of the pipe body section of the flange short pipe 82 is fixed to the mounting hole provided on the conveying pipe 2 by hand lay-up method, the worker can apply resin mixed glass fiber to the junction between the pipe body of the flange short pipe 82 and the mounting hole of the conveying pipe 2. After the resin mixed glass fiber is cured, the flange short pipe 82 and the conveying pipe 2 can be firmly fixed together. Compared with the traditional welding process for connecting valves on steel pipes, this method does not require complex machinery, only basic tools such as brushes and rollers, and the operation process is simple, without the need for professional training. It is convenient for workers to start and has better quality control than welding connection. In addition, the resin and glass fiber can be flexibly adjusted on site according to demand, with less waste.

[0046] Further, as shown in Figure 1 , the lower side of the through hole 3 and the bottom of the concrete well body 1 have a height difference, which can form a gap between the part of the conveying pipe 2 in the concrete well body 1 and the bottom of the concrete well body 1. A concrete pad 9 is arranged in the gap between the conveying pipe 2 and the bottom of the concrete well body 1, and the upper side of the concrete pad 9 abuts against the lower side of the conveying pipe 2.

[0047] In the above embodiment, the position of the through hole 3 on the concrete well body 1 is set according to the above method, which can effectively support the suspended section of the conveying pipe 2 installed later by preinstalling the concrete pad 9 at the bottom of the concrete well body 1 during the installation of the conveying pipe 2, thereby reducing the risk of deformation of the pipe section in the concrete well body 1 during use. If the water pressure in the conveying pipe 2 is high, the concrete pad 9 in the concrete well body 1 can be replaced with a pier structure (pier is a hydraulic structure set at the horizontal corner of the pipeline or on the long distance pipeline to prevent the displacement of the pipeline, mainly used to fix the pressure pipeline to prevent its displacement. The specific selection can be determined by the relevant technical personnel according to the needs on site).

[0048] Further, as shown in Figure 1 , a prefabricated cover plate 10 is arranged at the upper end of the concrete well body 1, and a gas vent 11 in the shape of a curved stick is fixedly installed at the center of the prefabricated cover plate 10.

[0049] In the above embodiment, the prefabricated cover plate 10 at the upper end of the concrete well body 1 can temporarily block the concrete well body 1 when the delivery pipe 2 is in normal operation. This not only ensures the cleanliness of the inside of the concrete well body 1, but also reduces the risk of pedestrians falling from the upper end of the concrete well body 1. After the prefabricated cover plate 10 is opened by subsequent workers, it is also convenient for workers to enter the concrete to inspect the delivery pipe 2 or related components thereon. The elbow-shaped air vent hole 11 provided on the prefabricated cover plate 10 is not vertically upward at the port outside the prefabricated cover plate 10, which can reduce the risk of impurities in the external environment entering the air vent hole 11 and causing blockage. When the air inlet and outlet valve 7 in the concrete well body 1 automatically inlets and outlets air, the air vent hole 11 can use its internal passage to guide the air in the well out or guide the air outside the well into the well.

[0050] The implementation principle of the present embodiment is as follows: when the concrete air inlet and outlet well of the present application is constructed, the worker first pours the bottom plate of the concrete well body 1 and the concrete cushion block 9 in the well, and embeds the vertical steel bar stub at the position of the through hole 3 on the well wall. After the strength of the bottom plate of the concrete well body 1 and the concrete cushion block 9 meets the requirements, sandbags are placed in other areas between the concrete cushion block 9 and the well wall of the concrete well body 1. Then, the lower half of the steel bar at the position of the through hole 3 on the well wall of the concrete well body 1 is bound, and the lower half of the waterproof sleeve 4 is installed in place. The delivery pipe 2 is hoisted to be properly placed on the concrete cushion block 9 and the sandbags, and the specific axis and longitudinal slope meet the design drawing requirements, and the pipe side pad is stable. After the delivery pipe 2 is hoisted, the air inlet and outlet valve 7 is installed. The general process is as follows: first, the worker uses professional tools to open an installation hole on the delivery pipe 2 made of glass reinforced pipe at the corresponding position of the air inlet and outlet valve 7. The diameter of the installation hole is the outer diameter of the pipe body section of the flange short pipe 82. After the pipe body section of the flange short pipe 82 is inserted into the installation hole, it is connected to the delivery pipe 2 by hand lay-up method. After the strength of the joint meets the requirements, the flange part on the flange short pipe 82 and the fixing flange 81 below the air inlet and outlet valve 7 are connected together by fastening bolts and fastening nuts, thereby completing the installation of the air inlet and outlet valve 7. In the process of installing the air inlet and outlet valve, the steel bars of the upper half of the reserved through hole 3 can be bound at the same time (this can improve the construction efficiency), and the upper half of the waterproof sleeve 4 can be installed. After the steel bars of the side wall of the concrete well body 1 are all bound, the formwork is installed to pour the side wall of the entire concrete well body 1. After the strength of the side wall concrete meets the requirements, the prefabricated cover plate 10 of the air inlet and outlet well 1 is hoisted, and finally the worker fills the waterproof board 6 made of high-pressure polyethylene closed-cell foam board between the delivery pipe 2 and the waterproof sleeve 4.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand; it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A concrete air intake and exhaust shaft comprising a concrete shaft body (1) and a transport pipe (2) for a transport medium, characterized in that: The lower half of the concrete well body (1) is provided with a through hole (3) along its radial direction, and a waterproof sleeve (4) is fixedly installed at the junction of the well wall of the concrete well body (1) and the through hole (3), and a wing ring (5) is welded to the outer side of the waterproof sleeve (4), which is embedded in the well wall of the concrete well body (1) at the corresponding position; The conveying pipe (2) is made of a material with smaller flow module loss coefficient and mass than steel pipe; Part of the pipe section of the conveying pipe (2) passes through the middle position of the two waterproof sleeves (4) along the axis direction of the through hole (3), and a waterproof plate (6) with flexibility and support is filled in the gap between the waterproof sleeve (4) and the conveying pipe (2); An air inlet and exhaust valve (7) is installed on the pipe section of the conveying pipe (2) in the concrete well body (1).

2. The concrete plenum according to claim 1, wherein: The conveying pipe (2) is a glass steel reinforced pipe.

3. The concrete plenum according to claim 2, wherein: The waterproof plate (6) is made of high-pressure polyethylene closed-cell foam board.

4. The concrete plenum according to claim 3, wherein: The conveying pipe (2) and the air inlet and exhaust valve (7) are connected together by a flange unit (8).

5. The concrete plenum according to claim 4, wherein: The flange unit (8) includes a fixed flange (81) and a flange short pipe (82), the fixed flange (81) is fixedly arranged at the lower end of the air inlet and exhaust valve (7), the flange part of the flange short pipe (82) is connected with the fixed flange (81) through fastening bolts and nuts, and the lower end of the pipe section of the flange short pipe (82) is fixedly connected with the conveying pipe (2).

6. The concrete plenum according to claim 5, wherein: An installation hole is formed at the position corresponding to the flange short pipe (82) on the conveying pipe (2), the lower end of the pipe section of the flange short pipe (82) is inserted into the installation hole and fixed together by hand lay-up method.

7. A concrete vent shaft according to any one of claims 1 to 6, characterised in that: The lower side of the through hole (3) and the bottom of the concrete well body (1) have a height difference, which can form a gap between the part of the conveying pipe (2) in the concrete well body (1) and the bottom of the concrete well body (1), a concrete pad (9) is arranged in the gap between the conveying pipe (2) and the bottom of the concrete well body (1), and the upper side of the concrete pad (9) abuts against the lower side of the conveying pipe (2).

8. The concrete plenum according to claim 7, wherein: A prefabricated cover plate (10) is arranged at the upper end of the concrete well body (1), and a crooked stick-shaped air vent (11) is fixedly installed at the center of the prefabricated cover plate (10).

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