Electric pole flange structure capable of preventing slurry leakage and construction method of electric pole flange structure

Abstract

The invention discloses an anti-slurry-leakage electric pole flange structure and a construction method thereof, and belongs to the technical field of electric pole flange plates, the anti-slurry-leakage electric pole flange structure comprises a flange plate body, a steel belt, an annular steel ring and an elastic sealing ring, the upper end of the steel belt is of a horn-mouth-shaped structure and can be attached to the inner surface of an electric pole mold, and the annular steel ring is arranged at the lower end of the steel belt; the annular steel ring is embedded in an outer annular groove formed in the upper end of the flange plate body, the elastic sealing ring is arranged between the annular groove and the annular steel ring, and the elastic sealing ring is installed in a steel belt between the electric pole and the flange plate body and the annular steel ring and keeps in elastic contact with the steel belt and the annular steel ring. The problem of slurry loss in the centrifugal forming process is effectively solved, it is ensured that concrete at the connecting position of the flange and the electric pole is compact and free of hollowing, and the strength and durability of the overall structure of the electric pole are enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of pole flanges and relates to a slurry leakage-proof pole flange structure and a construction method thereof. Background Art

[0002] In the traditional production of pole flanges, the connection between the pole flange and concrete in the centrifugal forming process is not well sealed, and the concrete slurry easily seeps out from the connection under the action of centrifugal force, resulting in the flange and the pole steel cage not being completely compacted. The hollowing caused by this slurry loss phenomenon not only greatly reduces the structural strength of the flange connection, but also provides a channel for external intrusion such as rainwater. When exposed to rain, snow, and high humidity for a long time, rainwater will penetrate through the hollowing, further aggravating the corrosion of the steel bars inside the pole and reducing the service life of the pole. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a leakage-proof pole flange structure and a construction method thereof, which effectively solves the problem of slurry loss during centrifugal forming, ensures that the concrete at the connection between the flange and the pole is dense and free of hollows, and enhances the strength and durability of the overall structure of the pole.

[0004] The technical solution adopted by the present invention is: a leakage-proof pole flange structure, including a flange body, a steel belt, an annular steel ring and an elastic sealing ring. The upper end of the steel belt is a trumpet-shaped structure, which can be fitted to the inner surface of the pole mold, and an annular steel ring is arranged at the lower end. The annular steel ring is embedded in an outer annular groove arranged at the upper end of the flange body. The elastic sealing ring is installed in the steel belt and the annular steel ring between the pole and the flange body and maintains elastic contact with them.

[0005] Furthermore, an inwardly convex annular groove portion is arranged between the annular steel ring and the steel belt.

[0006] Furthermore, the length of the portion of the annular steel ring that is sleeved on the rib ring plate of the flange body is greater than one third of the thickness of the rib ring plate.

[0007] Furthermore, the lower end of the annular steel ring is convexly bent inwardly and embedded in a lower annular narrow groove arranged at the lower side of the outer annular groove.

[0008] Furthermore, the elastic sealing ring is made of an elastic material that is resistant to high temperature and wear.

[0009] Furthermore, a collar is provided in the middle of the flange body, a connecting ring plate is provided at the lower end, a plurality of rib plates are evenly arranged circumferentially between the connecting ring plate and the hanging rib ring plate, and each rib plate is fixedly connected to the collar, the connecting ring plate is provided with bolt holes, and the hanging rib ring plate is provided with steel bar through holes.

[0010] A construction method for a leakage-proof pole flange structure, the method comprising the following steps: Step 1: Make a steel belt, make the upper end of the steel belt into a bell-shaped structure, the middle and lower parts are inwardly convex annular groove parts, and the lower end of the steel belt is an annular steel ring integrated with it; Step 2: Set the outer cylindrical surface of the upper end of the rib ring plate of the flange body to form an outer annular groove; Step 3: Sleeve the annular steel ring of the steel belt made in step 1 onto the outer annular groove, and press the elastic sealing ring into the steel belt and the annular steel ring so that the lower end abuts against the flange body; Step 4: Install the flange to the end of the pole mold, and lock the end steel bars of the pole steel mesh through the elastic sealing ring and the steel bar perforations on the flange body, and fit the flared end of the steel belt to the inner surface of the pole mold; Step 5: Carry out the pouring construction of the electric poles.

[0011] Furthermore, the extrusion equipment for making the upper end of the steel strip into a bell-mouth shape includes.

[0012] Beneficial effects of the present invention: Compared with the prior art, the effects of the present invention are as follows: (1) In the centrifugal forming process of the present invention, the structural design of the steel belt bell mouth ensures that the steel belt can fit tightly with the mold, preventing the slurry from leaking from the gap between the flange and the mold. This structure of the steel belt not only improves the sealing effect, but also ensures that the concrete will not seep out from the connection part under the action of centrifugal force; an elastic sealing ring and an annular steel ring are provided, and the elastic sealing ring is located in the outer annular groove, which can adapt to the flow of concrete under centrifugal force by deformation, thereby further improving the sealing effect; the annular steel ring serves as a second barrier to enhance the sealing performance and ensure that the slurry cannot penetrate during the centrifugal forming process; the multi-layer sealing protection of the present invention ensures that the slurry at the connection part between the pole and the flange will not be lost during the centrifugal forming process, effectively solves the problem of slurry loss during the centrifugal forming process, avoids the hollowing phenomenon caused by insufficient concrete density, thereby ensuring the strength of the overall structure of the pole and the long-term stability of the connection part; the flange sealing structure of the present invention not only effectively prevents the intrusion of rainwater and moisture during subsequent use, but also blocks external corrosive media from entering the flange, thereby enhancing the corrosion resistance of the pole flange connection and extending the service life of the pole; the pole designed with this sealing structure is particularly suitable for centrifugal forming processes and pole flange connections in high-demand environments such as high-voltage power towers and urban power grids, and has broad application prospects and promotion value; (2) The annular groove is provided to form a limiter with the concrete, so that the steel belt can be reliably connected after the pole is formed; (3) The length of the annular steel ring that is sleeved on the flange body and connected to the rib ring plate is greater than one-third of the thickness of the rib ring plate. This length can ensure the reliability of the connection and prevent the steel belt from loosening due to excessive centrifugal force or excessive adhesion of concrete during rotation; (4) The annular steel ring fits tightly with the annular groove of the flange and the pole to form a secondary sealing structure, which further prevents the loss of concrete slurry, and the lower end is convexly bent inward to further improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the installation of the pole flange structure to prevent leakage. DETAILED DESCRIPTION

[0014] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Example 1: Figure 1 As shown, a pole flange structure for preventing slurry leakage comprises a flange body 1, a steel belt 2, an annular steel ring 3 and an elastic sealing ring 4. The upper end of the steel belt 2 is a trumpet-shaped structure, which can be fitted to the inner surface of the pole mold 5. The lower end is provided with an annular steel ring 3, which is embedded in an outer annular groove 6 provided at the upper end of the flange body 1. The elastic sealing ring 4 is installed in the steel belt 2 and the annular steel ring 3 between the pole 8 and the flange body 1 and maintains elastic contact with them (the steel belt 2 and the annular steel ring 3). One end of the steel belt is provided with a trumpet-shaped structure, which can be tightly fitted with the mold during centrifugal molding, so as to prevent slurry from leaking from the gap between the flange and the mold; the annular steel ring and the elastic sealing ring are nested in the outer annular groove of the flange, and form a sealing structure together with the pole and the steel belt. The elastic sealing ring is arranged inside the groove and can be deformed during centrifugal molding, thereby enhancing the sealing effect.

[0016] In order to improve the stability of the steel belt, an inwardly convex annular groove portion 7 is provided between the annular steel ring 3 and the steel belt 2. The annular groove portion and the concrete form a limiting effect, thereby improving the reliable connection of the steel belt after the pole is formed.

[0017] In order to improve the connection reliability of the steel belt, the length of the annular steel ring 3 that is sleeved on the hanging rib ring plate 101 of the flange body 1 is greater than one third of the thickness of the hanging rib ring plate 101. This length can ensure the reliability after connection and avoid loosening of the steel belt due to excessive centrifugal force or excessive adhesion of concrete during rotation.

[0018] Among them, the lower end of the annular steel ring 3 is convexly bent inwardly and embedded in the lower annular narrow groove arranged on the lower side of the outer annular groove 6. The annular steel ring 3 fits tightly with the annular groove of the flange and the pole to form a secondary sealing structure, which further prevents the loss of concrete slurry, and the lower end is convexly bent inwardly to further improve the sealing effect.

[0019] The elastic sealing ring 4 is made of a high temperature resistant and wear resistant elastic material, which can adapt to the deformation under the action of centrifugal force and effectively improve the sealing performance of the connection between the flange and the pole.

[0020] In order to improve the anti-corrosion effect of the steel belt, the steel belt 2 is made of high-strength corrosion-resistant metal material, and an anti-corrosion coating is provided on the outer surface to enhance its corrosion resistance and durability.

[0021] The flange body 1 includes a rib ring plate 101, a collar 102 and a connecting ring plate 103. A collar 102 is provided in the middle of the flange body 1, and a connecting ring plate 103 is provided at the lower end. A plurality of rib plates 104 are evenly arranged circumferentially between the connecting ring plate 103 and the rib ring plate 101, and each rib plate 104 is fixedly connected to the collar 102. The connecting ring plate 103 is provided with bolt holes, and the rib ring plate 101 is provided with steel bar through holes.

[0022] A circle of high-strength steel belt is introduced at the connection between the flange body and the pole. One end of the steel belt is made with a trumpet-shaped structure, and the large end of the trumpet can fit tightly against the inner wall of the mold. During the centrifugal forming process, the structural design of the trumpet ensures that the steel belt can fit tightly against the mold, preventing the slurry from leaking from the gap between the flange and the mold. This structure of the steel belt not only improves the sealing effect, but also ensures that the concrete will not leak out from the connection part under the action of centrifugal force; in addition to the steel belt and trumpet design, an elastic sealing ring and an annular steel ring are also provided at the flange connection. The elastic sealing ring is located in the groove and can adapt to the flow of concrete under centrifugal force by deformation, further improving the sealing effect; the annular steel ring serves as the second barrier to enhance the sealing performance and ensure that the slurry cannot penetrate during the centrifugal forming process; the present invention ensures that the slurry at the connection part between the pole and the flange will not leak during the centrifugal forming process through the multi-layer protection of the steel belt with a trumpet, the elastic sealing ring and the annular steel ring, thereby avoiding the hollowing phenomenon caused by insufficient concrete density, thereby ensuring the strength of the overall structure of the pole and the long-term stability of the connection part. The multi-layer sealing structure of the present invention can not only effectively prevent the intrusion of rainwater and moisture during subsequent use, but also block external corrosive media from entering the interior of the flange, thereby enhancing the corrosion resistance of the pole flange connection and extending the service life of the pole.

[0023] The connection between the rib ring plate 101 of the flange body 1 and the pole not only relies on the mechanical structure of the flange itself, but also achieves a firm connection through the steel bars 9 or prestressed steel bars 9. During the production of the pole, the steel bars or prestressed steel bars 9 extend from the pole body, pass through the through hole above the elastic sealing ring and the reserved hole of the flange (the hole position on the rib ring plate or the connecting ring plate), and are locked with anchor nuts 10 (threads are set at the ends of the steel bars). The anchor nuts 10 are adjusted to adjust the prestressed steel bars 9. After these steel bars are fixed, they can be welded to the flange to ensure a rigid connection between the flange and the pole. The prestressed steel bars provide additional tension through the tensioning process, further enhancing the bonding force between the flange and the pole, and ensuring that the flange remains stable when subjected to external loads.

[0024] This connection method of steel bars or prestressed steel bars can ensure that the flange and the pole form an integral force-bearing structure, effectively disperse the stress caused by the external environment (such as wind load, snow load, etc.), and avoid local stress concentration leading to structural failure.

[0025] A circle of high-strength steel belt is introduced at the connection between the flange and the pole. One end of the steel belt is designed as a bell-mouth structure, which can fit tightly with the inner wall of the mold during the centrifugal forming process to prevent the slurry from leaking out of the gap between the flange and the mold. The steel belt wraps around the outside of the flange and contacts the outer wall of the pole to form the first leak-proof barrier. During the centrifugal forming process, as the mold rotates at high speed, the bell-mouth of the steel belt ensures that the steel belt is tightly combined with the mold, preventing the slurry from leaking through the gap of the flange, and ensuring that the concrete in the connection area between the flange and the pole is dense and has no hollows.

[0026] In certain application scenarios, the present invention uses prestressed steel bars to strengthen the connection between the flange and the pole. Prestressed steel bars are prestressed by a specific tensioning process during installation, and the flange plate is connected to the pole while maintaining a stable prestressed state through these steel bars. Prestressed steel bars not only provide a stronger structural bearing capacity, but also reduce the deformation between the flange and the pole caused by long-term loads, ensuring the stability of the flange connection during use.

[0027] An annular elastic sealing ring and an annular steel ring are installed in the annular groove of the flange body. The elastic sealing ring can deform with the centrifugal force, close to the inner wall of the flange and the surface of the pole, and prevent the loss of concrete slurry. The annular steel ring is located inside the groove to further enhance the sealing effect. The flange is connected to the pole through steel bars or prestressed steel bars, and the multi-layer structure of steel belts, elastic sealing rings and annular steel rings ensures that the slurry will not leak during the centrifugal molding process, and there is no hollowing phenomenon at the flange connection.

[0028] In actual use, the multi-layer sealing structure of the present invention can not only prevent the loss of slurry, but also effectively prevent the intrusion of rainwater and moisture in subsequent use. Since the connection between the flange and the pole is tightly combined through the steel bar or prestressed steel bar, and the steel belt, sealing ring and steel ring are protected, it can prevent rainwater from penetrating into the pole through the flange gap, reduce the corrosion of the internal steel bar, and thus extend the service life of the pole.

[0029] The ribs on the flange body are evenly spaced to ensure uniform force during the centrifugal forming process, thus improving the strength and stability of the flange connection. Embodiment 2: A construction method for a leakage-proof pole flange structure, the method comprising the following steps: Step 1: Make the steel belt. The upper end of the steel belt is made into a bell-shaped structure, the middle and lower parts are an inwardly convex annular groove, and the lower end of the steel belt is an annular steel ring integrated with it. This process uses a hydraulic press or mold forming equipment to ensure the accuracy of the bell-shaped shape of the steel belt and the annular groove. The pressure setting of the press needs to be controlled within the set range to ensure the accuracy of the steel belt shape and avoid deformation of the material. Step 2: Set the outer cylindrical surface of the upper end of the flange body's rib ring plate to an outer annular groove. This operation uses CNC machining equipment for high-precision machining to ensure that the depth and width of the groove are consistent so that the annular steel ring can be tightly embedded to enhance the sealing performance. Step 3: Sleeve the annular steel ring of the steel belt made in step 1 onto the outer annular groove, and press the elastic sealing ring into the steel belt and the annular steel ring until the lower end is against the flange body; in this step, a crimping machine is used to evenly press the elastic sealing ring between the steel belt and the annular steel ring to ensure that the sealing ring will not shift during the crimping process. The pressure of the crimping machine (to ensure that the elastic sealing ring is stably pressed in) and time control are crucial to ensure the sealing effect; Step 4: Install the flange to the end of the pole mold, and lock the end steel bars of the pole steel mesh through the elastic sealing ring and the steel bar perforations on the flange body, and fit the flared end of the steel belt to the inner surface of the pole mold; Step 5: Carry out the pouring construction of the electric poles.

[0030] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pole flange structure for preventing leakage of slurry, characterized by: The invention comprises a flange body (1), a steel belt (2), an annular steel ring (3) and an elastic sealing ring (4); the upper end of the steel belt (2) is a bell-shaped structure capable of being attached to the inner surface of an electric pole mold (5); the lower end is provided with an annular steel ring (3); the annular steel ring (3) is embedded in an outer annular groove (6) provided at the upper end of the flange body (1); the elastic sealing ring (4) is installed in the steel belt (2) and the annular steel ring (3) between the electric pole (8) and the flange body (1) and maintains elastic contact with the steel belt (2) and the annular steel ring (3).

2. The anti-leakage pole flange structure according to claim 1 is characterized by: An inwardly convex annular groove portion (7) is provided between the annular steel ring (3) and the steel belt (2).

3. The anti-leakage pole flange structure according to claim 2, characterized in that: The length of the portion of the annular steel ring (3) sleeved on the rib ring plate (101) of the flange body (1) is greater than one third of the thickness of the rib ring plate (101).

4. The anti-leakage pole flange structure according to claim 1, characterized in that: The lower end of the annular steel ring (3) is inwardly bent and embedded in a lower annular narrow groove arranged at the lower side of the outer annular groove (6).

5. The anti-leakage pole flange structure according to claim 1, characterized in that: The elastic sealing ring (4) is made of an elastic material that is resistant to high temperature and wear.

6. The anti-leakage pole flange structure according to claim 3, characterized in that: A collar (102) is provided in the middle of the flange body (1), and a connecting ring plate (103) is provided at the lower end. A plurality of rib plates (104) are evenly arranged in the circumferential direction between the connecting ring plate (103) and the rib hanging ring plate (101), and each rib plate (104) is fixedly connected to the collar (102). The connecting ring plate (103) is provided with bolt holes, and the rib hanging ring plate (101) is provided with steel bar through holes.

7. The anti-leakage pole flange structure according to claim 3 is characterized by: The steel belt (2) is made of high-strength corrosion-resistant metal material and has an anti-corrosion coating on its outer surface.

8. The construction method of a leakage-proof pole flange structure according to claim 1, characterized in that: The method comprises the following steps: Step 1: Make a steel belt, make the upper end of the steel belt into a bell-shaped structure, the middle and lower parts are inwardly convex annular groove parts, and the lower end of the steel belt is an annular steel ring integrated with it; Step 2: Set the outer cylindrical surface of the upper end of the rib ring plate of the flange body to form an outer annular groove; Step 3: Sleeve the annular steel ring of the steel belt made in step 1 onto the outer annular groove, and press the elastic sealing ring into the steel belt and the annular steel ring so that the lower end abuts against the flange body; Step 4: Install the flange to the end of the pole mold, and lock the end steel bars of the pole steel mesh through the elastic sealing ring and the steel bar perforations on the flange body, and fit the flared end of the steel belt to the inner surface of the pole mold; Step 5: Carry out the pouring construction of the electric poles.

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