Winter protection device and method for steel tube water level gauge platform

Abstract

The present invention proposes a winter protection device and method for a steel pipe water level gauge. The protection device includes a protective steel ring mounted on the steel pipe, which can slide up and down along the steel pipe with the water level; a first float connected to the outer wall of the protective steel ring, allowing the protective steel ring to float on the water surface; an airbag mechanism mounted on the steel pipe, located within the protective steel ring; the airbag mechanism can float on the water surface and slide up and down along the steel pipe with changes in water level; the airbag mechanism can be inflated or deflated to achieve volume changes; the area between the airbag mechanism and the protective steel ring forms an annular protection zone, and the airbag mechanism is connected to an inflation and deflation actuator with a controller to achieve inflation and squeezing of the annular protection zone. The present invention has the advantages of simplicity, efficiency, low cost, and high practicality, and can provide excellent protection.

Description

Technical Field

[0001] The present invention relates to the technical field of steel tube type water level gauge platforms, and in particular to a winter protection device and method for steel tube type water level gauge platforms. Background Art

[0002] like Figure 1 As shown in the figure, the steel pipe water level gauge platform is located on the upstream slope of the reservoir dam and consists of a steel pipe, a working platform, and an instrument protection device. The steel pipe is embedded in the concrete foundation of the riverbed, and the float water level gauge is placed inside the steel pipe. A working platform is set above the steel pipe to facilitate equipment maintenance. Above the working platform are the rain gauge system, solar power supply system, lightning rod system, instrument equipment box, and other components.

[0003] Frost damage is a common problem in northern my country, especially for water conservancy projects, which are particularly vulnerable due to their proximity to water. Currently, steel-tube water level gauges have the following issues: When protected by steel pipes, these gauges can be squeezed and deformed by the immense thrust created by the expansion of frozen water in winter. This can cause bending, damage to power and communication cables, and displacement of the level gauge, leading to inaccurate measurements.

[0004] Therefore, effective anti-icing measures are essential. De-icing and ice-breaking are common anti-icing measures. These measures typically involve increasing flow and changing water levels to break up frozen structures. Manual or mechanical ice-breaking is also used to prevent ice from forming on the water surface in front of adjacent buildings. However, these methods often require significant manpower, material, and financial resources, resulting in relatively high operating and maintenance costs.

[0005] Therefore, it is necessary to seek a simpler, more efficient, low-cost, highly practical device and method suitable for steel pipe protection. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a winter protection device and method for a steel pipe water level gauge platform.

[0007] The technical solution of the present invention to solve the technical problem is:

[0008] On the one hand, the technical solution proposes a winter protection device for a steel tube water level gauge station, comprising:

[0009] An annular protective steel ring is mounted on the steel pipe and can slide up and down along the steel pipe according to the water level. A first float is connected to the outer wall of the protective steel ring, so that the protective steel ring floats on the water surface.

[0010] An annular airbag mechanism is mounted on a steel pipe and is located within a protective steel ring. The airbag mechanism can float on the water surface and slide up and down along the steel pipe as the water level changes. The airbag mechanism can be inflated or deflated to achieve volume changes.

[0011] The area between the airbag mechanism and the protective steel ring forms an annular protective zone. The airbag mechanism is connected to an inflation and deflation actuator with a controller. When the inflation and deflation actuator is controlled by the controller to inflate the airbag mechanism, the volume of the airbag mechanism becomes larger and the area of ​​the annular protective zone is relatively reduced, thereby achieving squeezing of the annular protective zone.

[0012] Preferably, the protective steel ring is connected to a guide assembly, which includes a movable sleeve mounted on a steel pipe, the outer wall of the movable sleeve is connected to at least three groups of diagonal braces along the circumferential direction, and the bottom end of the diagonal brace is connected to the protective steel ring.

[0013] Preferably, the inner wall of the protective steel ring has an inclined surface, which is the first inclined portion; the thickness of the protective steel ring increases from top to bottom, forming a pattern with the small end at the top and the large end at the bottom.

[0014] Preferably, the airbag mechanism is a wheel hub and a tire connected to the wheel hub, the center of the wheel hub has a through hole; the steel pipe can freely pass through the through hole; the wheel hub can slide up and down along the steel pipe through the through hole.

[0015] Preferably, the outer wall of the tire has an inclined surface, which is the second oblique portion.

[0016] Preferably, the area between the movable sleeve and the protective steel ring is wrapped with a protective cover, and the protective cover is made of black coated fabric.

[0017] Preferably, the diagonal support is also connected to an ice-breaking hammer for assisting in ice-breaking, and the bottom of the ice-breaking hammer has a downwardly arranged spike portion.

[0018] Preferably, the inflation and deflation actuator includes an air source device, an exhaust valve and a controller. One end of the air source device is connected to the air nozzle through an air pipe, and the tire is installed with the air nozzle; the air source device includes an intake valve, a pressure sensor and a compressor with an air storage tank. The intake valve, exhaust valve and pressure sensor are respectively connected to the air pipe air circuit, and the pressure sensor is used to measure the tire pressure of the tire; the intake valve, pressure sensor, exhaust valve and compressor are respectively electrically connected to the controller.

[0019] On the other hand, this technical solution also proposes a winter protection method for a steel tube water level gauge station, comprising the following steps:

[0020] S1: Installing the winter protection device for the steel tube type water level gauge platform on the steel tube type water level gauge platform;

[0021] S2: The charging and discharging actuator is powered by a solar power supply system provided by the steel tube water level gauge;

[0022] S3: Set the program in the controller in advance, set the maximum air pressure in the airbag mechanism to p1, and the minimum air pressure in the airbag mechanism to p2; at the same time, set the inflation and deflation actuator to perform inflation and deflation actions every time interval t;

[0023] S4: If the water surface in the annular protection zone freezes within time t, when the t time period ends, the controller controls the inflation and deflation actuator to inflate the airbag mechanism, and the volume of the airbag mechanism increases. During the expansion process, the airbag mechanism will squeeze the ice in the annular protection zone toward the protective steel ring, and the ice will be crushed under the counter-force provided by the protective steel ring; as the inflation continues, when the air pressure in the airbag mechanism reaches the p1 value, the controller controls the inflation and deflation actuator to stop inflation; then, the controller controls the inflation and deflation actuator to deflate the airbag mechanism until the air pressure in the airbag mechanism drops to p2, stops deflation, and maintains this state. After the next t time period, the above process is repeated to perform an inflation and deflation process.

[0024] S4 also includes: the controller controls the inflation and deflation actuator to inflate the airbag mechanism, and the volume of the airbag mechanism increases. During the expansion process, the airbag mechanism will squeeze the ice cubes in the annular protection area toward the protective steel ring; since the protective steel ring has a first inclined portion, during the squeezing process, the ice cubes are subjected to an upward component of force, and the ice cubes are squeezed upward. Since an ice-breaking hammer is provided on the inclined support, the top of the ice cube touches the ice-breaking hammer during the upward movement and is broken by the action of the ice-breaking hammer.

[0025] The above technical solution has the following advantages or beneficial effects:

[0026] 1. The present invention has a simple structure and low production cost. It adopts the concept of "separation + inflation and extrusion" and uses a protective steel ring to separate the area around the steel pipe from the water surface of the reservoir. A small annular protection zone that is easy to manage and protect is formed inside the protective steel ring. Through the provided airbag mechanism, the airbag mechanism expands after inflation and its volume becomes larger, which can squeeze and crush the ice in the annular protection zone, thereby eliminating the ice thrust around the steel pipe, preventing the steel pipe from being squeezed and deformed, and effectively protecting the internal measurement facilities.

[0027] 2. The protective steel ring in the present invention not only plays a separating role, but also plays a role in providing an upward thrust. Since the inner wall of the protective steel ring has a first oblique portion, when the ice is squeezed, the ice will tend to climb along the first oblique portion under the guidance of the first oblique portion, thereby making it easier to split and break the annular ice. In addition, with the ice-breaking hammer provided, the ice is more easily broken during the upward movement of the ice, thereby effectively realizing the processing of ice in the annular protective area. With multiple measures, the ice thrust around the steel pipe can be effectively eliminated.

[0028] 3. The present invention also provides a protective cover, which wraps around the annular protection area. The protective cover is made of black coated fabric, which has good heat absorption capacity, thereby increasing the temperature of the annular protection area, playing a role in preventing or delaying icing, forming a dual management mode of prevention + intervention, and has the advantages of simplicity, efficiency, low cost and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0030] Figure 1 The present invention is a structural diagram of a steel pipe water level gauge station installed in a reservoir in the prior art.

[0031] Figure 2 It is a schematic structural diagram of the protective device and the steel pipe after installation proposed by the present invention in Example 1.

[0032] Figure 3 yes Figure 2 Top view of the structure of the middle protective device and steel pipe.

[0033] Figure 4 It is a structural stereogram of the protective steel ring in Example 1.

[0034] Figure 5 yes Figure 4 Structural cross-section of the middle protective steel ring.

[0035] Figure 6 It is a structural diagram of the protective steel ring and the airbag mechanism working together to break ice.

[0036] Figure 7 It is a top view of the structure of the airbag mechanism in Example 1.

[0037] Figure 8 yes Figure 7 Front view of the airbag mechanism.

[0038] Figure 9 It is a schematic structural diagram of the protective device and steel pipe after installation proposed by the present invention in Example 2.

[0039] Figure 10 yes Figure 9 Schematic diagram of the structure of the ice-breaking hammer.

[0040] Figure 11 It is a schematic structural diagram of the protective device and steel pipe after installation proposed by the present invention in Example 3.

[0041] Figure 12 It is a control diagram of the inflation and deflation actuator in the present invention.

[0042] Description of reference numerals:

[0043] 1. Dam; 2. Steel pipe water level gauge platform; 201. Steel pipe; 202. Working platform; 3. Movable sleeve; 4. Diagonal brace; 41. Ice hammer; 411. Spike; 5. Protective steel ring; 51. First oblique part; 6. First float; 7. Airbag mechanism; 71. Wheel hub; 72. Tire; 721. Second oblique part; 73. Through hole; 74. Air nozzle; 8. Annular protection area; 81. Ice cube; 9. Protective cover; 10. Compressor; 11. Air pipe; 12. Intake valve; 13. Exhaust valve; 14. Pressure sensor; 15. Controller; 16. Solar power supply system. DETAILED DESCRIPTION

[0044] In order to make the purposes, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0046] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] Example 1:

[0048] like Figure 1 As shown, the steel pipe water level gauge platform 2 is located on the upstream slope of the reservoir dam 1 and consists of a steel pipe 201, a working platform 202, and an instrument protection device. The steel pipe 201 is embedded in the riverbed concrete foundation, and the float water level gauge is placed within the steel pipe 201. A working platform 202 is located above the steel pipe 201 to facilitate equipment maintenance. Above the working platform 202 are the rain gauge system, solar power supply system 16, lightning rod system, and instrument equipment boxes.

[0049] Regarding the engineering frost damage problem of this steel pipe water level gauge platform 2, Figure 2 - Figure 8 As shown, this embodiment proposes a winter protection device for a steel tube water level gauge platform 2, which mainly consists of the following parts:

[0050] Part 1:

[0051] The annular protective steel ring 5 is mounted on the steel pipe 201. The protective steel ring 5 is made of hard steel and has excellent impact resistance and deformation resistance. The protective steel ring 5 can slide up and down along the steel pipe 201 according to the water level, mainly to achieve the purpose of automatic rise and fall following the water level. The outer wall of the protective steel ring 5 is connected to a first float 6, so that the protective steel ring 5 floats on the water surface. The first float 6 is made of conventional floating plate material, as long as it can make the protective steel ring 5 float on the water surface.

[0052] Part II:

[0053] An annular airbag mechanism 7 is mounted on the steel pipe 201 and positioned within the protective steel ring 5. The airbag mechanism 7 floats on the water surface and slides up and down along the steel pipe 201 as the water level fluctuates. This arrangement ensures that the airbag mechanism 7 and the protective steel ring 5 cooperate, allowing both to automatically rise and fall with changes in the water level to accommodate reservoir water level fluctuations. In this embodiment, the airbag mechanism 7 can be inflated or deflated to achieve volume changes. The details of the inflation and deflation of the airbag mechanism 7 are further described below.

[0054] Part III:

[0055] The area between the airbag mechanism 7 and the protective steel ring 5 forms an annular protective zone 8. The airbag mechanism 7 is connected to an inflation and deflation actuator with a controller 15, which is used to inflate and deflate the airbag mechanism 7. When the inflation and deflation actuator is controlled by the controller 15 to inflate the airbag mechanism 7, the volume of the airbag mechanism 7 becomes larger, and the area of ​​the annular protective zone 8 is relatively reduced, thereby squeezing the annular protective zone 8.

[0056] In order to further ensure the guiding effect of the protective steel ring 5:

[0057] In this embodiment, the protective steel ring 5 is connected to a guide assembly, which includes a movable sleeve 3 that is sleeved on the steel pipe 201. The movable sleeve 3 is tightly attached to the outer wall of the steel pipe 201 and can slide up and down along the steel pipe 201; the outer wall of the movable sleeve 3 is connected to at least three groups of diagonal braces 4 along the circumferential direction, and the bottom end of the diagonal brace 4 is connected to the protective steel ring 5. The diagonal brace 4 can be made of scrap steel bars.

[0058] In this embodiment, the airbag mechanism 7 is capable of inflating and deflating, and has two uses. First, it acts as a disturbance around the steel pipe 201. During inflation and deflation, the volume of the airbag mechanism 7 changes, causing fluctuations on the water surface to prevent ice formation. This method requires the airbag mechanism 7 to be inflated and deflated at a high frequency to achieve the disturbance effect. Second, high-frequency inflation and deflation can disturb the water surface, but it also has certain disadvantages: increased energy consumption, insufficient energy conservation, reduced service life, and relatively high operating and maintenance costs. To this end, this article also proposes a low-frequency extrusion method to achieve ice breaking as a supplementary means of protecting the steel pipe 201. In this article, the low-frequency extrusion method is mainly introduced.

[0059] Its working principle is:

[0060] This solution adopts the idea of ​​"separation + inflation and extrusion", and uses a protective steel ring 5 to separate the area around the steel pipe 201 from the water surface of the reservoir, and forms a small-area annular protection area 8 that is easy to manage and protect inside the protective steel ring 5; through the set airbag mechanism 7, the airbag mechanism 7 expands after inflation and its volume becomes larger, which can squeeze and break the ice cubes 81 in the annular protection area 8, thereby eliminating the ice thrust around the steel pipe 201, preventing the steel pipe 201 from being squeezed and deformed, and effectively protecting the internal measurement facilities.

[0061] As a feasible embodiment, the inner wall of the protective steel ring 5 has an inclined surface, which is the first inclined portion 51; the thickness of the protective steel ring 5 increases from top to bottom, forming a pattern with the small end at the top and the large end at the bottom.

[0062] In this embodiment, taking into account factors such as easy material acquisition and convenient production, the airbag mechanism 7 is a wheel hub 71 and a tire 72 connected to the wheel hub 71, both of which can be made of the wheel hub 71 and tire 72 replaced by the vehicle, which is low-cost and easy to obtain materials; the wheel hub 71 has a through hole 73 in the center. When in use, an opening of a suitable diameter is opened in the center of the wheel hub 71 according to the diameter of the steel pipe 201 to form the through hole 73; the steel pipe 201 can freely pass through the through hole 73; the wheel hub 71 can slide up and down along the steel pipe 201 through the through hole 73.

[0063] In this embodiment, to more conveniently crush ice cubes 81, the outer wall of the tire 72 used has an inclined surface, which serves as the second inclined portion 721. The second inclined portion 721 can be constructed using either an additive or subtractive approach. For example, a polyurea coating of varying thickness can be sprayed onto the outer wall of the tire 72 to construct the second inclined portion 721. Polyurea coatings are waterproof, corrosion-resistant, tough, impact-resistant, and wear-resistant, making them one of the most wear-resistant materials in rubber products and highly suitable for this technical environment. Alternatively, the outer wall of the tire 72 can be polished to create the aforementioned oblique shape, thereby constructing the second inclined portion 721. In this embodiment, spraying polyurea is preferred to construct the second inclined portion 721.

[0064] The inflation and deflation actuator mentioned above is a conventional technical means, which is implemented in a variety of ways in the prior art. This embodiment provides a specific solution as follows:

[0065] like Figure 12 As shown, the inflation and deflation actuator includes an air source device, an exhaust valve 13, and a controller 15. One end of the air source device is connected to an air nozzle 74 via an air pipe 11. The air nozzle 74 is installed on the tire 72, and the air nozzle 74 can use the air nozzle 74 provided by the tire 72. The air source device also includes an air inlet valve 12, a pressure sensor 14, and a compressor 10 with an air tank. The air inlet valve 12, the exhaust valve 13, and the pressure sensor 14 are each connected to the air circuit of the air pipe 11. The pressure sensor 14 is used to measure the tire pressure of the tire 72. The air inlet valve 12, the pressure sensor 14, the exhaust valve 13, and the compressor 10 are each electrically connected to the controller 15. The power supply used by the inflation and deflation actuator can be directly supplied by the solar power supply system 16 of the steel pipe water level gauge platform 2.

[0066] This embodiment also proposes a winter protection method for the steel tube water level gauge platform 2, comprising the following steps:

[0067] S1: Installing the winter protection device for the steel tube type water level gauge platform 2 on the steel tube 201 of the steel tube type water level gauge platform 2;

[0068] S2: The solar power supply system 16 provided by the steel tube water level gauge station 2 is used to supply power to the inflation and deflation actuator;

[0069] S3: Set a program in the controller 15 in advance, set the maximum air pressure in the airbag mechanism 7 to p1, and the minimum air pressure in the airbag mechanism 7 to p2, with the unit of p1 and p2 being bar; at the same time, set the inflation and deflation actuator to perform an inflation and deflation action every time interval t, with the unit of t being min;

[0070] S4: This step is introduced in detail by taking ice breaking as an example: if the water surface in the annular protection zone 8 freezes within time t, when the time period t ends, the controller 15 controls the inflation and deflation actuator to inflate the airbag mechanism 7, and the volume of the airbag mechanism 7 increases. In the process of increasing, the airbag mechanism 7 will squeeze the ice cubes 81 in the annular protection zone 8 toward the protective steel ring 5, and the ice cubes 81 are crushed under the action of the counter-force provided by the protective steel ring 5; as the inflation continues, when the air pressure in the airbag mechanism 7 reaches the p1 value, the controller 15 controls the inflation and deflation actuator to stop inflation; then, the controller 15 controls the inflation and deflation actuator to deflate the airbag mechanism 7 until the air pressure in the airbag mechanism 7 drops to p2, stops deflation, maintains this state, and repeats the above process after the next time period t to perform an inflation and deflation process.

[0071] It should be noted that if the protective steel ring 5 and the tire 72 are in a structural form with a first oblique portion 51 and a second oblique portion 721, refer to the attached Figure 6 After the tire 72 is inflated, it squeezes the ice cube 81. The first oblique portion 51 and / or the second oblique portion 721 provide an extrusion force to the ice cube 81, which is assumed to be F. Through force analysis, F is divided into two components F1 and F2. F1 acts upward, which has an upward lifting effect on the ice cube 81. The ice cube 81 is crushed or squeezed out, thereby processing the ice layer in the annular protection area 8 and eliminating the influence of the ice thrust caused by the ice around the steel pipe 201.

[0072] Example 2:

[0073] Based on the first embodiment, refer to the attached Figure 9 - Figure 10 In this embodiment, the diagonal support 4 is also connected to an ice-breaking hammer 41 for assisting in breaking ice. The bottom of the ice-breaking hammer 41 has a downwardly arranged spike portion 411. The setting of the ice-breaking hammer 41 is mainly to cooperate with the use of the first oblique portion 51 and / or the second oblique portion 721.

[0074] This embodiment also proposes a winter protection method for the steel tube water level gauge platform 2, comprising the following steps:

[0075] On the basis of the steps in Example 1, S4 also includes: the controller 15 controls the inflation and deflation actuator to inflate the airbag mechanism 7, and the volume of the airbag mechanism 7 increases. During the expansion process, the airbag mechanism 7 will squeeze the ice 81 in the annular protection area 8 toward the protective steel ring 5; because the protective steel ring 5 has a first oblique portion 51 or because the protective steel ring 5 has a first oblique portion 51 and the tire 72 has a second oblique portion 721, during the squeezing process, the ice 81 is subjected to an upward component of force, and the ice 81 is squeezed upward. Since an ice-breaking hammer 41 is provided on the diagonal support 4, the top of the ice 81 touches the ice-breaking hammer 41 during the upward movement and is broken under the action of the ice-breaking hammer 41.

[0076] It can be seen that the protective steel ring 5 in the present invention not only plays a separating role, but also plays a role in providing an upward thrust. Since the inner wall of the protective steel ring 5 has a first oblique portion 51, when the ice cube 81 is squeezed, the ice cube 81 will have a climbing tendency along the first oblique portion 51 under the guidance of the first oblique portion 51, thereby making it easier to split and break the annular ice cube 81; in addition, with the ice-breaking hammer 41 provided, the ice cube 81 is more easily broken during the upward movement of the ice cube 81, thereby effectively realizing the processing of the ice cube 81 in the annular protective area 8. Under multiple measures, the ice thrust around the steel pipe 201 can be effectively eliminated.

[0077] Example 3:

[0078] On the basis of Example 1 or Example 2, refer to the attached Figure 11 In this embodiment, the area between the movable sleeve 3 and the protective steel ring 5 is wrapped with a protective cover 9. The protective cover 9 is made of black coated fabric. The diagonal brace 4 serves as a skeleton. The protective cover 9 is fixedly attached to the diagonal brace 4 to form a "skirt" structure. Black coated fabric is one of the most common fabrics that absorb sunlight to generate heat. It can absorb most of the energy in sunlight and convert it into heat energy. This kind of fabric is usually made of materials such as polypropylene or polyamide, and the surface is covered with a black heat-absorbing coating. It has good heat absorption capacity, which can increase the temperature of the annular protection area 8, play a role in preventing or delaying ice formation, and cooperate with extrusion crushing to form a dual management mode of prevention + intervention, which has the advantages of simplicity, efficiency, low cost and high practicality.

[0079] Although the above describes the specific implementation methods of the invention in conjunction with the accompanying drawings, it does not limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A winter protection method for a steel tube water level gauge station, characterized in that: A winter protection device for a steel tube type water level gauge platform is used, the device comprising: An annular protective steel ring (5) is sleeved on the steel pipe (201), and the protective steel ring (5) can slide up and down along the steel pipe (201) according to the water level; the outer wall of the protective steel ring (5) is connected to a first float (6), so that the protective steel ring (5) floats on the water surface; An annular airbag mechanism (7) is sleeved on the steel pipe (201), and the airbag mechanism (7) is located within the protective steel ring (5); the airbag mechanism (7) can float on the water surface and can slide up and down along the steel pipe (201) as the water level changes; the airbag mechanism (7) can be inflated or deflated to achieve a change in volume; The area between the airbag mechanism (7) and the protective steel ring (5) forms an annular protective zone (8). The airbag mechanism (7) is connected to an inflation and deflation actuator with a controller (15). When the inflation and deflation actuator is controlled by the controller (15) to inflate the airbag mechanism (7), the volume of the airbag mechanism (7) increases, and the area of ​​the annular protective zone (8) decreases relatively, thereby achieving squeezing of the annular protective zone (8). The method comprises the following steps: S1: Installing the winter protection device for the steel tube type water level gauge platform on the steel tube type water level gauge platform (201); S2: The solar power supply system (16) provided by the steel tube water level gauge station is used to supply power to the inflation and deflation actuator; S3: Setting a program in the controller (15) in advance, setting the maximum air pressure in the airbag mechanism (7) to p1, and the minimum air pressure in the airbag mechanism (7) to p2; at the same time, setting the inflation and deflation actuator to perform an inflation and deflation action every time interval t; S4: If the water surface in the annular protection zone (8) freezes within the time period t, when the time period t ends, the controller (15) controls the inflation and deflation actuator to inflate the airbag mechanism (7), and the volume of the airbag mechanism (7) increases. During the expansion process, the airbag mechanism (7) squeezes the ice (81) in the annular protection zone (8) toward the protective steel ring (5), and the ice (81) is crushed under the counter-force provided by the protective steel ring (5); as the inflation continues, when the air pressure in the airbag mechanism (7) reaches the value p1, the controller (15) controls the inflation and deflation actuator to stop inflation; then, the controller (15) controls the inflation and deflation actuator to deflate the airbag mechanism (7) until the air pressure in the airbag mechanism (7) drops to p2, stops deflation, and maintains this state. After the next time period t, the above process is repeated to perform an inflation and deflation process; The controller (15) controls the inflation and deflation actuator to inflate the airbag mechanism (7), and the volume of the airbag mechanism (7) increases. During the expansion process, the airbag mechanism (7) squeezes the ice (81) in the annular protection area (8) toward the protective steel ring (5); since the protective steel ring (5) has a first oblique portion (51), during the squeezing process, the ice (81) is subjected to an upward component force, and the ice (81) is squeezed upward. Since the inclined support (4) is provided with an ice-breaking hammer (41), the top of the ice (81) touches the ice-breaking hammer (41) during the upward movement, and is broken under the action of the ice-breaking hammer (41).

2. A winter protection method for a steel tube water level gauge according to claim 1, characterized in that: The protective steel ring (5) is connected to a guide assembly, which includes a movable sleeve (3) sleeved on the steel pipe (201), the outer wall of the movable sleeve (3) being connected to at least three groups of diagonal braces (4) along the circumferential direction, and the bottom ends of the diagonal braces (4) are connected to the protective steel ring (5).

3. A winter protection method for a steel tube water level gauge according to claim 1, characterized in that: The inner wall of the protective steel ring (5) has an inclined surface, which is a first inclined portion (51); the thickness of the protective steel ring (5) increases from top to bottom, forming a pattern with the small end at the top and the large end at the bottom.

4. A winter protection method for a steel tube water level gauge platform according to claim 1, characterized in that: The airbag mechanism (7) comprises a wheel hub (71) and a tire (72) connected to the wheel hub (71); the wheel hub (71) has a through hole (73) at its center; the steel pipe (201) can freely pass through the through hole (73); and the wheel hub (71) can slide up and down along the steel pipe (201) through the through hole (73).

5. A winter protection method for a steel tube water level gauge platform according to claim 4, characterized in that: The outer wall of the tire (72) has an inclined surface, which is the second oblique portion (721).

6. A winter protection method for a steel tube water level gauge platform according to claim 2, characterized in that: The area between the movable sleeve (3) and the protective steel ring (5) is surrounded by a protective cover (9), and the protective cover (9) is made of black coated fabric.

7. A winter protection method for a steel tube water level gauge platform according to claim 2 or 6, characterized in that: The diagonal support (4) is also connected to an ice-breaking hammer (41) for assisting in ice-breaking, and the bottom of the ice-breaking hammer (41) has a downwardly disposed spike portion (411).

8. A winter protection method for a steel tube water level gauge platform according to claim 4, characterized in that: The inflation and deflation actuator comprises an air source device, an exhaust valve (13) and a controller (15); one end of the air source device is connected to an air nozzle (74) via an air pipe (11); the tire (72) is equipped with the air nozzle (74); the air source device comprises an air intake valve (12), a pressure sensor (14) and a compressor (10) with an air storage tank; the air intake valve (12), the exhaust valve (13) and the pressure sensor (14) are respectively connected to the air path of the air pipe (11); the pressure sensor (14) is used to measure the tire pressure of the tire (72); the air intake valve (12), the pressure sensor (14), the exhaust valve (13) and the compressor (10) are respectively electrically connected to the controller (15).

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