Observation pillar of pumped storage power station construction measurement control network in severe cold area

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By adopting the design of corrugated pipe structure and steel skeleton in the observation pier in extremely cold areas, the problems of concrete deformation and upward movement of the whole pipe were solved, and high-precision measurement was achieved in extremely cold environments.

CN223343315UActive Publication Date: 2025-09-16STATE GRID XINYUAN GRP CO LTD +1

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Patent Information

Application Number: CN202422818861.2
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-11-19
Publication Date: 2025-09-16
Estimated Expiration: 2034-11-19

AI Technical Summary

Technical Problem

In extremely cold regions, observation piers are prone to concrete deformation and upward movement of the entire pipe, resulting in reduced measurement accuracy.

Method used

The observation pier adopts a corrugated pipe structure, including an outer sheath and an inner lining. The outer sheath is a corrugated hard material, and the inner lining is a soft PVC material with shallow grooves, forming an air insulation layer. Combined with the base and the column steel frame, it ensures accurate positioning and prevents concrete cracks and upward movement of the entire pipe in severe cold environments.

Benefits of technology

It effectively prevents concrete from cracking in severe cold environments, improves measurement accuracy and structural stability, avoids the upward movement of the entire pipe, and ensures the long-term use effect of the measurement control network.

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Abstract

The utility model discloses a severe cold area pumped storage power station construction measurement control net observation pillar, which comprises a base, the base is embedded and fixed on the ground, a corrugated pipe is vertically arranged at the center of the upper surface of the base, a cylinder is cast in the corrugated pipe through concrete, and a forced centering device is horizontally arranged at the center of the top end of the cylinder. The corrugated pipe can effectively preserve heat of concrete and prevent the concrete from cracking, and the deeper corrugations of the corrugated pipe play a role in fixing the whole pipe, so that the situation that the whole pipe moves upwards can be effectively avoided, and the service life of the corrugated pipe is prolonged. The problems of concrete strength reduction and deformation caused by long-term outdoor construction measurement control network observation pillars in severe cold areas are effectively solved.

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Description

Technical Field

[0001] The utility model relates to an observation pier for a construction survey control network of a pumped storage power station in a severely cold region, and belongs to the technical field of observation equipment. Background Art

[0002] Observation piers in the construction survey control network are fundamental to ensuring precise construction and layout of a project. Measurement accuracy is at the millimeter level. Most observation piers are located on mountaintops and other high-elevation locations within the region. If the exterior of the observation piers is not protected, extreme weather conditions in cold regions can cause deformation of the concrete piers, resulting in reduced measurement accuracy. Existing technologies often use custom straight PVC pipes to protect the exterior of the observation piers. While this provides some protection by preventing direct contact between the concrete and the outside world, it is prone to cracking and upward displacement in cold regions. Therefore, we propose an observation pier for the construction survey control network of a pumped-storage power station in cold regions. Utility Model Content

[0003] The purpose of the utility model is to provide an observation pier for the construction measurement control network of a pumped storage power station in a severely cold area, which can not only effectively insulate the concrete and prevent cracks in the concrete, but also effectively avoid the situation where the entire pipe moves up.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: an observation pier for the construction measurement and control network of a pumped storage power station in a severely cold area, comprising a base, which is embedded and fixed on the ground, and is cast with concrete. A corrugated pipe is vertically arranged at the center of the upper surface of the base, and the center line of the corrugated pipe coincides with the center line of the base. A column is cast with concrete in the corrugated pipe, and a forced centering device is horizontally arranged at the center of the top of the column.

[0005] The aforementioned observation pier for the construction measurement and control network of the pumped storage power station in the severe cold region, the corrugated pipe includes an outer protective layer and an inner lining layer, the outer protective layer is a corrugated hard material, and the inner lining layer is a soft PVC material with shallow grooves.

[0006] The aforementioned observation pier for the construction measurement control network of the pumped storage power station in severe cold regions has a corrugated texture depth of 2 cm on the outer protective layer and a groove notch depth of 1 mm on the inner lining layer.

[0007] The aforementioned observation pier for the construction measurement and control network of the pumped storage power station in the severe cold region adopts a double-layer structure as the outer protective layer, forming an air insulation layer in the middle thereof, which has a better insulation effect.

[0008] The aforementioned observation pier for the construction measurement and control network of the pumped-storage power station in the severe cold region has a base steel frame provided in the base, and a column steel frame provided in the column. The base steel frame and the column steel frame are fixedly connected, which is convenient for pre-embedded installation and more accurate positioning.

[0009] The aforementioned observation pier for the construction measurement and control network of the pumped-storage power station in the severe cold region has a wire threading pipe pre-buried inside the column to facilitate subsequent wire threading.

[0010] For the aforementioned observation pier of the construction measurement control network of the pumped storage power station in the severe cold region, the difference between the horizontal center of the forced centering device and the geometric center of the base pier surface shall not exceed 5 mm, thereby ensuring the measurement accuracy.

[0011] For the aforementioned observation pier of the construction measurement control network of the pumped-storage power station in the severe cold region, the horizontal inclination of the forced centering device is not greater than ±4°.

[0012] The aforementioned observation pier of the construction measurement control network of the pumped-storage power station in the severe cold region has a slope of no more than ±1°.

[0013] The aforementioned observation pier for the construction measurement and control network of the pumped storage power station in severe cold regions, the outer surface side wall of the corrugated pipe is sprayed with white exterior wall paint.

[0014] Compared with the existing technology, the utility model adopts corrugated pipe to cast concrete to manufacture observation piers. The corrugated pipe can not only effectively insulate the concrete and prevent cracks in the concrete, but also the deeper corrugations of the corrugated pipe can fix the entire pipe, which can effectively avoid the situation where the entire pipe moves up, and effectively solve the problem of concrete strength reduction and deformation caused by the observation pier of the construction measurement control network in cold areas being outdoors for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the local structure of the bellows of the present utility model.

[0017] Figure numerals: 1-base, 2-corrugated pipe, 3-column, 4-outer protective layer, 5-inner lining layer, 6-air insulation layer, 7-base steel frame, 8-column steel frame, 9-threading pipe, 10-forced centering device.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0019] Example 1 of the present utility model: An observation pier for a measurement and control network for construction of a pumped-storage power station in a severely cold region comprises a base 1 which is embedded and fixed on the ground. The base 1 is cast with concrete. Before casting, a base pit is excavated on the ground at the construction site, and concrete is cast in the base pit to form the base 1. A corrugated pipe 2 is vertically arranged at the center of the upper surface of the base 1, and the center line of the corrugated pipe 2 coincides with the center line of the base 1. A column 3 is cast in the corrugated pipe 2 through concrete, and a forced centering device 10 is horizontally arranged at the center of the top of the column 3. The corrugated pipe 2 can effectively insulate the concrete and prevent cracks in the concrete, and the corrugated pipe 2 has deeper corrugations. The concrete is embedded in the corrugations of the corrugated pipe 2, which fixes the entire corrugated pipe 2 and can effectively avoid the upward movement of the entire pipe, effectively solving the problem of concrete strength reduction and deformation caused by the long-term outdoor conditions of the observation pier for construction measurement and control network in severely cold regions.

[0020] Example 2 of the present utility model: An observation pier for a measurement and control network for construction of a pumped-storage power station in a severely cold region comprises a base 1 which is embedded and fixed on the ground. The base 1 is cast with concrete. Before casting, a base pit is excavated on the ground at the construction site, and concrete is cast in the base pit to form the base 1. A corrugated pipe 2 is vertically arranged at the center of the upper surface of the base 1, and the center line of the corrugated pipe 2 coincides with the center line of the base 1. A column 3 is cast in the corrugated pipe 2 through concrete, and a forced centering device 10 is horizontally arranged at the center of the top of the column 3. The corrugated pipe 2 can effectively insulate the concrete and prevent cracks in the concrete, and the corrugated pipe 2 has deeper corrugations. The concrete is embedded in the corrugations of the corrugated pipe 2, which fixes the entire corrugated pipe 2 and can effectively avoid the upward movement of the entire pipe, effectively solving the problem of concrete strength reduction and deformation caused by the long-term outdoor conditions of the observation pier for construction measurement and control network in severely cold regions.

[0021] The corrugated pipe 2 comprises an outer sheath 4 and an inner liner 5. The outer sheath 4 is a corrugated, hard material, such as stainless steel or hard PVC. The inner liner 5 is a soft PVC material with shallow grooves. This double-layer structure enhances thermal insulation. The outer sheath 4's rigid structure provides protection, while the grooves in the inner liner 5 increase friction with the concrete, further enhancing the stability of the corrugated pipe 2. The corrugated texture of the outer sheath 4 is 2 cm deep, while the grooves in the inner liner 5 are 1 mm deep. The outer sheath 4 adopts a double-layer structure, with an air insulation layer 6 formed in the center, providing better thermal insulation.

[0022] Embodiment 3 of the present utility model: An observation pier for a measurement control network for construction of a pumped-storage power station in a severely cold region, comprising a base 1, which is embedded and fixed on the ground. The base 1 is cast with concrete. Before casting, a base pit is excavated on the ground at the construction site, and concrete is cast in the base pit to form the base 1. A corrugated pipe 2 is vertically arranged at the center of the upper surface of the base 1, and the center line of the corrugated pipe 2 coincides with the center line of the base 1. A column 3 is cast in the corrugated pipe 2 through concrete, and a forced centering device 10 is horizontally arranged at the center of the top of the column 3. A base steel frame 7 is arranged in the base 1, and a column steel frame 8 is arranged in the column 3. The base steel frame 7 is fixedly connected to the column steel frame 8. Before casting the base 1, first cast concrete of general height in the base pit, then put the prefabricated base steel frame 7 and column steel frame 8 into the base pit, and then cast concrete to the upper surface of the base steel frame 7 to form the base 1. The corrugated pipe 2 is sleeved on the column steel frame 8, and the column steel frame 8 is placed in the center of the corrugated pipe 2. Pour concrete into the corrugated pipe 2 and vibrate it fully. Vibrate the concrete once every 30 cm to remove air and moisture in the concrete, promote the close arrangement between concrete particles, and eliminate the internal stress in the concrete, thereby improving the strength and durability of the concrete, facilitating pre-buried installation, making the structure more stable, and more precise in positioning.

[0023] The corrugated pipe 2 can effectively insulate the concrete and prevent cracks in the concrete. The corrugated pipe 2 has deeper corrugations, and the concrete is embedded in the corrugations of the corrugated pipe 2, which fixes the entire corrugated pipe 2 and effectively avoids the situation where the entire pipe moves up. It effectively solves the problem of concrete strength reduction and deformation caused by the observation pier of the construction measurement control network in cold areas being outdoors for a long time.

[0024] The corrugated pipe 2 comprises an outer sheath 4 and an inner liner 5. The outer sheath 4 is a corrugated, hard material, such as stainless steel or hard PVC. The inner liner 5 is a soft PVC material with shallow grooves. This double-layer structure enhances thermal insulation. The outer sheath 4's rigid structure provides protection, while the grooves in the inner liner 5 increase friction with the concrete, further enhancing the stability of the corrugated pipe 2. The corrugated texture of the outer sheath 4 is 2 cm deep, while the grooves in the inner liner 5 are 1 mm deep. The outer sheath 4 adopts a double-layer structure, with an air insulation layer 6 formed in the center, providing better thermal insulation.

[0025] Example 4 of the present utility model: An observation pier for a measurement control network for construction of a pumped-storage power station in a severely cold region, comprising a base 1, which is embedded and fixed on the ground. The base 1 is cast with concrete. Before casting, a base pit is excavated on the ground at the construction site, and concrete is cast in the base pit to form the base 1. A corrugated pipe 2 is vertically arranged at the center of the upper surface of the base 1, and the center line of the corrugated pipe 2 coincides with the center line of the base 1. A column 3 is cast in the corrugated pipe 2 through concrete, and a forced centering device 10 is horizontally arranged at the center of the top of the column 3. A base steel frame 7 is arranged in the base 1, and a column steel frame 8 is arranged in the column 3. The base steel frame 7 is fixedly connected to the column steel frame 8. Before casting the base 1, first cast concrete of general height in the base pit, then put the prefabricated base steel frame 7 and column steel frame 8 into the base pit, and then cast concrete to the upper surface of the base steel frame 7 to form the base 1. The corrugated pipe 2 is sleeved on the column steel frame 8, and the column steel frame 8 is placed in the center of the corrugated pipe 2. Pour concrete into the corrugated pipe 2 and vibrate it fully. Vibrate the concrete once every 30 cm to remove air and moisture in the concrete, promote the close arrangement between concrete particles, and eliminate the internal stress in the concrete, thereby improving the strength and durability of the concrete, facilitating pre-buried installation, making the structure more stable, and more precise in positioning.

[0026] Among them, the difference between the horizontal center of the forced centering device 10 and the geometric center of the pier surface of the base 1 does not exceed 5 mm, the horizontal inclination of the forced centering device 10 is not greater than ±4°, and the inclination of the column 3 does not exceed ±1°, so as to ensure the measurement accuracy in subsequent use.

[0027] The corrugated pipe 2 can effectively insulate the concrete and prevent cracks in the concrete. The corrugated pipe 2 has deeper corrugations, and the concrete is embedded in the corrugations of the corrugated pipe 2, which fixes the entire corrugated pipe 2 and effectively avoids the situation where the entire pipe moves up. It effectively solves the problem of concrete strength reduction and deformation caused by the observation pier of the construction measurement control network in cold areas being outdoors for a long time.

[0028] The corrugated pipe 2 comprises an outer sheath 4 and an inner liner 5. The outer sheath 4 is a corrugated, hard material, such as stainless steel or hard PVC. The inner liner 5 is a soft PVC material with shallow grooves. This double-layer structure enhances thermal insulation. The outer sheath 4's rigid structure provides protection, while the grooves in the inner liner 5 increase friction with the concrete, further enhancing the stability of the corrugated pipe 2. The corrugated texture of the outer sheath 4 is 2 cm deep, while the grooves in the inner liner 5 are 1 mm deep. The outer sheath 4 adopts a double-layer structure, with an air insulation layer 6 formed in the center, providing better thermal insulation.

[0029] Specifically, a threading tube 9 is pre-buried inside the column 3 to facilitate subsequent threading.

[0030] Specifically, the outer surface sidewall of the corrugated pipe 2 is sprayed with white exterior wall paint.

[0031] The working principle of an embodiment of the present invention: The present invention adopts a bellows 2 for casting construction. The bellows 2 adopts a double-layer material consisting of an outer protective layer 4 and an inner lining layer 5. The outer protective layer 4 of the bellows 2 can be made of hard and flexible materials such as stainless steel and hard PVC, and the inner lining layer 5 adopts a soft PVC material with a shallow groove. During installation, the bellows 2 is vertically placed in the center of the base 1, concrete is poured and fully vibrated. The bellows 2 can not only effectively insulate the concrete and prevent cracks in the concrete, but also the deeper threads of the bellows 2 have a fixing effect on the entire pipe, which can effectively avoid the situation where the entire pipe moves up, and avoid the problem of concrete strength reduction and deformation caused by the construction measurement and control network observation pier in cold areas being outdoors for a long time; the outer protective layer 4 adopts a double-layer structure, and an air insulation layer 6 is formed in the middle thereof, which has a better insulation effect. A wire threading pipe 9 is pre-buried inside the column 3 to facilitate subsequent wire threading.

Claims

1. Observation pier for construction measurement and control network of pumped storage power station in severe cold regions, characterized by: The invention comprises a base (1), wherein the base (1) is embedded and fixed on the ground, a corrugated pipe (2) is vertically arranged at the center of the upper surface of the base (1), a column (3) is cast in the corrugated pipe (2) by concrete, and a forced centering device (10) is horizontally arranged at the center of the top end of the column (3).

2. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1 is characterized in that: The corrugated pipe (2) comprises an outer protective layer (4) and an inner lining layer (5); the outer protective layer (4) is a corrugated hard material, and the inner lining layer (5) is a soft PVC material with relatively shallow grooves.

3. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 2 is characterized in that: The corrugated texture depth of the outer protective layer (4) is 2 cm, and the groove notch depth of the inner lining layer (5) is 1 mm.

4. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 3 is characterized in that: The outer protective layer (4) adopts a double-layer structure, and an air insulation layer (6) is formed in the middle thereof.

5. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1 is characterized in that: A base steel frame (7) is provided in the base (1), a column steel frame (8) is provided in the column (3), and the base steel frame (7) and the column steel frame (8) are fixedly connected.

6. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1, characterized in that: A wire threading tube (9) is pre-buried inside the column (3).

7. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1, characterized in that: The difference between the horizontal center of the forced centering device (10) and the geometric center of the pier surface of the base (1) does not exceed 5 mm.

8. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1, characterized in that: The horizontal inclination of the forced centering device (10) is no greater than ±4°.

9. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1, characterized in that: The inclination of the column (3) does not exceed ±1°.

10. The observation pier for the construction survey and control network of a pumped storage power station in severe cold regions according to claim 1, characterized in that: The outer surface sidewall of the corrugated pipe (2) is sprayed with white exterior wall paint.