Winter protection device and method for steel pipe type water level gauge table

Abstract

The invention provides a winter protection device and method for a steel pipe type water level gauge platform, and the protection device comprises a protection steel ring which sleeves a steel pipe and can slide up and down along the steel pipe along with the height of the water level; the outer wall of the protective steel ring is connected with a first floating body, so that the protective steel ring floats on the water surface; the air bag mechanism is arranged on the steel pipe in a sleeving mode and located in the protective steel ring; the air bag mechanism can float on the water surface and can slide up and down along the steel pipe along with the water level change; the air bag mechanism can be inflated or deflated so as to realize volume change; an annular protection area is formed in the area between the air bag mechanism and the protection steel ring, and the air bag mechanism is connected with an inflation and deflation executing mechanism with a controller to achieve inflation and extrusion of the annular protection area. The invention has the advantages of simplicity, high efficiency, low cost and high practicability, and can play a good protection role.

Description

Technical Field

[0001] The 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 station is arranged in the water-facing slope of the reservoir dam, and is composed of steel pipes, working platforms, instrument protection devices, etc. The steel pipe is embedded in the concrete foundation of the riverbed, and the float water level gauge is placed in the steel pipe. A working platform is set on the upper part of the steel pipe to facilitate equipment maintenance. Above the working platform are components such as the rain gauge system, solar power supply system, lightning rod system, and instrument equipment box.

[0003] The problem of engineering frost damage is common in northern my country, especially in water conservancy projects. The problem of frost damage is more prominent due to the water environment. At present, this type of steel pipe water level gauge has the following problems when in use: after the steel pipe water level gauge is protected by steel pipes, the huge thrust formed by the expansion of the ice surface in winter due to the freezing of the water body causes the steel pipe to be squeezed and deformed, resulting in the bending of the steel pipe, the damage of power supply and communication cables, and the change of the position of the liquid level gauge, making the water level gauge measure inaccurately.

[0004] Therefore, effective anti-freezing measures are essential. De-icing and ice-breaking are common anti-freezing measures, which generally use methods such as increasing flow and changing water levels to destroy the ice structure. At the same time, manual or mechanical ice-breaking is also used to prevent the water surface in front of adjacent buildings from freezing. However, such methods often require a lot of manpower, material and financial resources, and the operation and maintenance costs are relatively high.

[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 proposes a winter protection device and method for a steel tube water level gauge station.

[0007] The technical solution of the present invention to solve the technical problem is: On the one hand, the technical solution proposes a winter protection device for a steel tube water level gauge station, comprising: An annular protective steel ring is sleeved on the steel pipe, and the protective steel ring can slide up and down along the steel pipe according to the water level; the outer wall of the protective steel ring is connected to a first floating body, so that the protective steel ring floats on the water surface; An annular airbag mechanism is sleeved on a steel pipe, and the airbag mechanism is located in a protective steel ring; the airbag mechanism can float on the water surface and can slide up and down along the steel pipe as the water level changes; the airbag mechanism can be inflated or deflated to achieve a change in volume; The area between the airbag mechanism and the protective steel ring forms an annular protection 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 increases and the area of ​​the annular protection zone is relatively reduced, thereby achieving squeezing of the annular protection zone.

[0008] Preferably, the protective steel ring is connected to a guide assembly, and the guide assembly includes a movable sleeve mounted on a steel pipe, and 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.

[0009] 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.

[0010] 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.

[0011] Preferably, the outer wall of the tire has an inclined surface, which is the second oblique portion.

[0012] 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.

[0013] Preferably, an ice-breaking hammer for assisting ice-breaking is also connected to the diagonal support, and the bottom of the ice-breaking hammer has a downwardly disposed spike portion.

[0014] 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 an air nozzle via 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, the exhaust valve and the 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, the pressure sensor, the exhaust valve and the compressor are respectively electrically connected to the controller.

[0015] On the other hand, the technical solution also proposes a winter protection method for a steel tube water level gauge station, comprising 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; S2: The charging and discharging actuator is powered by the solar power supply system of the steel tube water level gauge; 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; 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 action of 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, maintains this state, and after the next t time period, repeats the above process to perform an inflation and deflation process.

[0016] 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.

[0017] The above technical solution has the following advantages or beneficial effects: 1. The present invention has a simple structure and low manufacturing cost. It adopts the idea 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, forming a small annular protection area inside the protective steel ring that is easy to manage and protect. Through the airbag mechanism that is set up, the airbag mechanism expands after inflation and its volume becomes larger, which can squeeze and break the ice in the annular protection area, 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.

[0018] 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 inclined portion, when the ice cubes are squeezed, the ice cubes will tend to climb along the first inclined portion under the guidance of the first inclined portion, thereby making it easier to split and break the annular ice cubes. In addition, with the ice-breaking hammer provided, the ice cubes are more easily broken during the upward movement of the ice cubes, thereby effectively realizing the processing of ice cubes in the annular protective area. With multiple measures, the ice thrust around the steel pipe can be effectively eliminated.

[0019] 3. The present invention also provides a protective cover, which is wrapped around the annular protection area. The protective cover is made of black coated fabric and has good heat absorption capacity, so that the temperature of the annular protection area can be increased to prevent or delay icing, forming a dual management mode of prevention + intervention, which has the advantages of simplicity, high efficiency, low cost and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 The invention is a structural schematic diagram of a steel tube water level gauge platform after being installed in a reservoir in the prior art.

[0022] Figure 2 It is a schematic diagram of the structure of the protective device and the steel pipe after installation in the first embodiment of the present invention.

[0023] Figure 3 yes Figure 2 Structural top view of the middle protection device and steel pipe.

[0024] Figure 4 It is a structural stereogram of the protective steel ring in the first embodiment.

[0025] Figure 5 yes Figure 4 Structural cross-section view of the middle protective steel ring.

[0026] Figure 6 It is a schematic diagram of the structure of the protective steel ring and the airbag mechanism working together to break ice.

[0027] Figure 7 It is a top view of the structure of the airbag mechanism in the first embodiment.

[0028] Figure 8 yes Figure 7 Front view of the airbag mechanism.

[0029] Fig. 9 It is a schematic diagram of the structure of the protective device and the steel pipe after installation in the second embodiment of the present invention.

[0030] Fig.10 yes Fig. 9 Schematic diagram of the structure of the ice-breaking hammer.

[0031] Fig.11 It is a schematic diagram of the structure of the protective device and the steel pipe after installation proposed by the present invention in Example 3.

[0032] Fig.12 It is a control diagram of the inflation and deflation actuator in the present invention.

[0033] Description of reference numerals: 1. Dam; 2. Steel pipe water level gauge platform; 201. Steel pipe; 202. Working platform; 3. Movable cover; 4. Diagonal brace; 41. Ice breaker; 411. Spike; 5. Protective steel ring; 51. First oblique part; 6. First floating body; 7. Air bag mechanism; 71. Wheel hub; 72. Tire; 721. Second oblique part; 73. Through hole; 74. Air nozzle; 8. Annular protection area; 81. Ice body; 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

[0034] In order to make the purpose, 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 creative work are within the scope of protection of the present invention.

[0035] 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 drawings. This is merely 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.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] Embodiment 1: like Figure 1 As shown, the steel pipe water level gauge station 2 is arranged in the water-facing slope of the reservoir dam 1, and is composed of a steel pipe 201, a working platform 202, an instrument protection device, etc. The steel pipe 201 is embedded in the river bottom concrete foundation, and the float water level gauge is placed in the steel pipe 201. A working platform 202 is set on the upper part of the steel pipe 201 for easy equipment maintenance. A rain gauge system, a solar power supply system 16, a lightning rod system, an instrument equipment box, and other components are set above the working platform 202.

[0038] In view of the engineering frost damage problem of this steel tube 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: Part I: The annular protective steel ring 5 is sleeved 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 the first floating body 6, so that the protective steel ring 5 floats on the water surface. The first floating body 6 adopts conventional floating plate materials, as long as it can make the protective steel ring 5 float on the water surface.

[0039] Part II: The annular airbag mechanism 7 is sleeved on the steel pipe 201, and the airbag mechanism 7 is located in 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 purpose of this arrangement is to achieve the coordination between the airbag mechanism 7 and the protective steel ring 5, so that both can automatically rise and fall as the water level changes to meet the changes in the water level of the reservoir area. In this embodiment, the airbag mechanism 7 can be inflated or deflated to achieve a change in volume. The inflation and deflation changes of the airbag mechanism 7 are further described in detail below.

[0040] Part III: 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 realize the inflation and deflation of 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 realizing the squeezing of the annular protective zone 8.

[0041] In order to further ensure the guiding effect of the protective steel ring 5: In this embodiment, the protective steel ring 5 is connected to a guide assembly, which includes a movable sleeve 3 mounted 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. The bottom end of the diagonal brace 4 is connected to the protective steel ring 5. The diagonal brace 4 can be made of waste steel bars.

[0042] In this embodiment, the airbag mechanism 7 can be inflated and deflated, and has two usage modes. First, it plays a disturbing role around the steel pipe 201. When inflating and deflated, the volume of the airbag mechanism 7 changes, which will cause the water surface to fluctuate and prevent ice. This method requires the airbag mechanism 7 to be inflated and deflated at a high frequency in order to achieve the disturbance effect. Second, high-frequency inflation and deflation can have the effect of disturbing the water surface, but it also has certain disadvantages: increased energy consumption, insufficient energy saving, reduced service life, and relatively high operating and maintenance costs. For this reason, 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.

[0043] Its working principle is: 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 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.

[0044] 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.

[0045] In this embodiment, taking into account factors such as easy material acquisition and convenient manufacturing, 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 the 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, and 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.

[0046] In this embodiment, in order to more conveniently squeeze and crush the ice cube 81, the outer wall of the tire 72 used has an inclined surface, which is the second oblique portion 721. The construction of the second oblique portion 721 can be achieved by "addition" or "subtraction". For example, the outer wall of the tire 72 is sprayed with polyurea coatings of different thicknesses to achieve the construction of the second oblique portion 721. The polyurea coating has the advantages of being waterproof, anti-corrosive, tough, strong in impact resistance, and wear-resistant. It is one of the most wear-resistant materials in rubber products and is very suitable for this technical environment. For another example, the outer wall of the tire 72 is polished to cut out the oblique shape to construct the second oblique portion 721. Compared with the two, in this embodiment, it is preferred to spray polyurea to construct the second oblique portion 721.

[0047] The inflation and deflation actuator mentioned above is a conventional technical means, which is implemented in many ways in the prior art. This embodiment provides a specific solution, as follows: like Fig.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 through an air pipe 11. The tire 72 is equipped with the air nozzle 74. The air nozzle 74 can be the air nozzle 74 of the tire 72. The air source device includes an intake valve 12, a pressure sensor 14 and a compressor 10 with an air storage tank. The 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 intake valve 12, the pressure sensor 14, the exhaust valve 13 and the compressor 10 are respectively electrically connected to the controller 15. The power supply used by the inflation and deflation actuator can be directly powered by the solar power supply system 16 of the steel pipe water level gauge 2.

[0048] This embodiment also proposes a winter protection method for a steel tube water level gauge platform 2, comprising the following steps: 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; S2: The charging and discharging actuator is powered by the solar power supply system 16 provided by the steel tube water level gauge station 2; 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, and the units of p1 and p2 are bar; at the same time, set the inflation and deflation actuator to perform an inflation and deflation action every time interval t, and the unit of t is min; S4: This step is described 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. During the expansion process, 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 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, and deflation stops, maintaining this state, and after the next time period t, repeating the above process to perform an inflation and deflation process.

[0049] 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 formation around the steel pipe 201.

[0050] Embodiment 2: Based on the first embodiment, refer to the attached Fig. 9 - Fig.10 In this embodiment, an ice-breaking hammer 41 for assisting ice-breaking is also connected to the diagonal support 4. The bottom of the ice-breaking hammer 41 has a downwardly disposed spike portion 411. The ice-breaking hammer 41 is mainly disposed to cooperate with the use of the first oblique portion 51 and / or the second oblique portion 721.

[0051] This embodiment also proposes a winter protection method for a steel tube water level gauge platform 2, comprising the following steps: 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 and moved upward. Since the diagonal 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.

[0052] 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 inclined portion 51, when the ice block 81 is squeezed, the ice block 81 will tend to climb along the first inclined portion 51 under the guidance of the first inclined portion 51, thereby making it easier to split and break the annular ice block 81; in addition, with the ice-breaking hammer 41, the ice block 81 is more easily broken during the upward movement of the ice block 81, thereby effectively realizing the processing of the ice block 81 in the annular protective area 8. Under multiple measures, the ice thrust around the steel pipe 201 can be effectively eliminated.

[0053] Embodiment three: Based on the first or second embodiment, refer to the attached Fig.11 In this embodiment, the area between the movable sleeve 3 and the protective steel ring 5 is wrapped with a protective cover 9, which is made of black coated fabric. The diagonal brace 4 serves as a skeleton, and 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, so it can increase the temperature of the annular protection area 8, play a role in preventing or delaying ice formation, and cooperate with extrusion and crushing to form a dual management mode of prevention + intervention, which has the advantages of simplicity, high efficiency, low cost and high practicality.

[0054] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to 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 device for a steel tube water level gauge station, characterized in that: include: 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 floating body (6), so that the protective steel ring (5) floats on the water surface; An annular airbag mechanism (7) sleeved on the steel pipe (201), the airbag mechanism (7) being located inside the protective steel ring (5); the airbag mechanism (7) being able to float on the water surface and being able to slide up and down along the steel pipe (201) as the water level changes; the airbag mechanism (7) being able to 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).

2. A winter protection device 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, the guide assembly comprising a movable sleeve (3) sleeved on a 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, the bottom ends of the diagonal braces (4) being connected to the protective steel ring (5).

3. A winter protection device 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 a small end at the top and a large end at the bottom.

4. A winter protection device for a steel tube water level gauge 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 device 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 inclined portion (721).

6. A winter protection device 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 device for a steel tube water level gauge platform according to claim 2 or 6, characterized in that: The diagonal brace (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 device 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).

9. A winter protection method for a steel tube water level gauge station, characterized in that: A winter protection device for a steel tube water level gauge platform according to claims 1 to 9 is used, comprising the following steps: S1: installing the winter protection device for the steel tube type water level gauge platform on the steel tube (201) of the steel tube type water level gauge platform; S2: Powering the inflation and deflation actuator through the solar power supply system (16) provided by the steel tube water level gauge; S3: Setting a program in the controller (15) in advance, setting the maximum value of the air pressure in the airbag mechanism (7) to p1, and the minimum value of the 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 once every time interval t; S4: If the water surface in the annular protection zone (8) freezes within a 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 process of increasing in volume, the airbag mechanism (7) squeezes the ice block (81) in the annular protection zone (8) toward the protection steel ring (5), and the ice block (81) is crushed under the action of the counter-force provided by the protection steel ring (5). As the inflation continues, when the air pressure in the airbag mechanism (7) reaches a 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 a value p2, and deflation stops. The current state is maintained, and after the next time period t, the above process is repeated to perform an inflation and deflation process.

10. A winter protection method for a steel tube water level gauge platform according to claim, characterized in that: S4 also includes: the controller (15) controls the inflation and deflation actuator to inflate the airbag mechanism (7), so that the volume of the airbag mechanism (7) increases. During the process of increasing the volume, the airbag mechanism (7) squeezes the ice block (81) in the annular protection area (8) toward the protection steel ring (5); because the protection steel ring (5) has a first inclined portion (51), during the squeezing process, the ice block (81) is subjected to an upward component force, and the ice block (81) is squeezed and moved upward. Since an ice-breaking hammer (41) is provided on the inclined support (4), the top of the ice block (81) touches the ice-breaking hammer (41) during the upward movement, and is broken under the action of the ice-breaking hammer (41).

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