Auxiliary fixing device for re-icing of lower surface of ice surface

Abstract

The invention provides an ice surface lower surface re-icing auxiliary fixing device. The ice surface lower surface re-icing auxiliary fixing device comprises a thermal insulation shell, an end cover icing surface, a reactant storage chamber and a reactant feeding chamber. The icing surface of the end cover is positioned on the top surface of the thermal insulation shell and is not wrapped by the thermal insulation shell; the reactant feeding chamber and the reactant storage chamber are mounted in the thermal insulation shell, and a reactant A and a reactant B are separately stored in the reactant storage chamber; during use, the icing surface of the end cover is in contact with the lower surface of the ice surface, the reactant storage chamber puts a reactant A and a reactant B into the reactant chamber according to a certain proportion through the proportional putting device for endothermic reaction, and the thermal insulation shell enables the endothermic reaction to absorb heat of the icing surface of the end cover, so that water between the icing surface of the end cover and the lower surface of the ice surface is frozen; the whole device is fixed on the lower surface of the ice surface. The energy consumption is low, the requirement for equipment is low, the internal mechanical structure is not prone to being influenced by the temperature, the problem that an icing method is unstable is solved, and the large advantage is achieved on the scene with the low requirement for fixing strength.

Description

Technical Field

[0001] The present invention relates to the field of ice surface fixators, and particularly to an auxiliary fixator for re-freezing the lower surface of ice. Background Art

[0002] With the in-depth exploration of polar regions by humans, underwater vehicles play an increasingly important role in fields such as polar scientific research and environmental monitoring. However, the extreme environment covered by polar ice and snow poses great challenges to the operation of underwater vehicles. Especially for underwater robots that need to rely on the lower surface of the ice layer to work, the unevenness of the ice layer and the electromagnetic signal interference caused by thick ice make it difficult for underwater robots to work stably in one position.

[0003] In recent years, there have been many studies on fixation methods, and various technical means have been proposed. For example, the mechanical anchoring method applies external force through mechanical devices such as anchor claws and bolts to achieve fixation. Its structure is simple and the operation is intuitive, but affected by the extremely cold environment, the performance of mechanical components is prone to decline, and its applicability to different ice layers is poor. The hot melting method uses a heating device to locally melt the ice layer to form holes, and then fixes the device after freezing. The fixation effect is good and it is not limited by the ice layer thickness, but it has high energy consumption, high equipment requirements, and the stress generated during the freezing process will also affect the long-term stability. The freezing method injects liquid between the ice layer and the device and realizes fixation after freezing. It has low cost and simple operation, but it is greatly affected by temperature and is prone to problems such as uneven freezing or premature melting. The composite fixation method combines multiple methods to improve stability, but it is technically complex, has high equipment costs, and is cumbersome to operate. In addition, there is also a new material fixation method in the research and exploration stage. If it can be successfully applied, it will have broad prospects, but its performance, stability, etc. are still to be verified at present. Summary of the Invention

[0004] Due to the above deficiencies in the current technology, the present invention provides an auxiliary fixator for re-freezing the lower surface of ice.

[0005] An auxiliary fixator for re-freezing the lower surface of ice includes a heat-insulating outer shell, an end cover ice surface, a reactant storage chamber, and a reactant reaction chamber; the end cover ice surface is located on the top surface of the heat-insulating outer shell and is not wrapped by the heat-insulating outer shell; the reactant reaction chamber and the reactant storage chamber are installed inside the heat-insulating outer shell, and reactant A and reactant B are separately stored in the reactant storage chamber.

[0006] During use, the end cover ice surface contacts the lower surface of the ice. The reactant storage chamber uses a proportional dosing device to dose reactant A and reactant B into the reactant reaction chamber in a certain proportion for an endothermic reaction. The heat-insulating outer shell makes the endothermic reaction absorb the heat of the end cover ice surface, so that the water between the end cover ice surface and the lower surface of the ice freezes, realizing the overall fixation of the device on the lower surface of the ice.

[0007] Furthermore, the endothermic reaction equation occurring in the reactant chamber is:

[0008] Ba(OH)2·8H2O + 2NH2Cl = BaCl2 + 2NH3↑ + 10H2O.

[0009] Furthermore, the reactant storage chamber is located above the reactant chamber. There is a gas space between the reactant storage chamber and the reactant chamber. The gas space includes a piston and a conduit; the conduit is located within the gas space passage. The reactant chamber is blocked from the gas space by the piston. A spring is connected above the piston, and the conduit is connected below to a gas absorption chamber. When gas is generated in the reactant chamber, the piston is pushed out, compressing the spring, and the gas overflows from the reactant chamber, enters the conduit through the passage within the gas space, and flows along the conduit into the gas product absorption chamber.

[0010] Furthermore, the bottom of the reaction chamber is of an inverted cone structure.

[0011] Furthermore, a stirrer is provided at the bottom of the reactant chamber to ensure sufficient contact of the reactants.

[0012] Furthermore, the reactant storage chamber and the reactant chamber are connected and communicated through an opening in the reactant storage chamber.

[0013] Furthermore, the opening ratio of barium hydroxide octahydrate crystals to ammonium chloride crystals in the opening of the reactant storage chamber is one to two.

[0014] Furthermore, the proportional dosing device includes gears; the gears are located below the gas product absorption chamber. The gears include a driving gear and driven gears. The driving gear is connected to the driven gears on both the left and right sides. A steering gear is connected below the driving gear, and the driven gears are connected to rotating rods.

[0015] Furthermore, the reactant chamber, the reactant storage chamber, and the ice layer bottom surface of the end cap are connected as a whole.

[0016] Furthermore, the reactant chamber, the ice layer bottom surface of the end cap, and the reactant storage chamber are all made of heat-conductive materials.

[0017] The beneficial effects of the present invention are as follows:

[0018] For the auxiliary fixing device on the lower surface of the ice layer described in the present invention, its energy consumption is low, the requirements for equipment are low, the internal mechanical structure is not easily affected by temperature, and the problem of instability of the ice formation method is overcome by the method of physical cooling to achieve ice formation, which has great advantages for scenarios with relatively low requirements for fixing strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the integrated structure of the reaction chamber and the reactant storage chamber;

[0021] Figure 3 It is a schematic diagram of the structure where the gas product absorption device is located;

[0022] Figure 4 It is a schematic diagram of the overall structure where the proportional dosing device is located;

[0023] Figure 5 It is a schematic diagram of the opening and closing of the rotating rod and the reactant storage chamber opening in the proportional dosing device;

[0024] Figure 6 It is a schematic diagram of the opening of the rotating rod and the reactant storage chamber opening in the proportional dosing device;

[0025] Figure 7 It is a schematic diagram of the gas flow direction after the spring in the gas space is compressed.

[0026] Explanation of reference numerals in the drawings: 1 - reactant chamber, 2 - gas product absorption device, 3 - proportional dosing device, 4 - stirrer, 5 - ice-covered end face, 6 - reactant storage chamber, 7 - spring, 8 - piston, 9 - conduit, 10 - gas product absorption chamber, 11 - rotating rod, 12 - gear, 13 - servo motor, 14 - reactant storage chamber opening, 15 - heat insulation layer, 16 - heat insulation outer shell. Detailed implementation manners

[0027] For a further understanding of the present invention, the present invention will be described in detail below with reference to the drawings and examples.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly defined 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The present invention is implemented as follows: The endothermic reaction used in this invention is set as:

[0030] Ba(OH)2·8H2O + 2NH2Cl = BaCl2 + 2NH3↑ + 10H2O

[0031] When the ice-covered surface 5 of the end cap of the invention comes into contact with the lower surface of the ice layer, the proportional feeding device feeds barium hydroxide octahydrate crystals and ammonium chloride crystals into the reaction chamber 1 in a ratio of 1:2. At the same time, the stirrer 4 is turned on, and the reaction starts and absorbs heat, causing the temperature of the reaction chamber 1 to continuously drop. There is a heat insulation layer 15 between the outer wall of the reaction chamber 1 and the heat insulation housing 16 to ensure that as much heat as possible absorbed by the endothermic reaction comes from the ice-covered surface 5 of the end cap. Due to the unevenness of the lower surface of the ice, the ice-covered surface 5 of the end cap does not fit perfectly with the lower surface of the ice, and there is a gap between them. The gap is filled with water. The temperature of the ice-covered surface 5 of the end cap continuously drops, driving the water in the gap to refreeze, thereby fixing the invention to the lower surface of the ice.

[0032] The ammonia gas generated by the reaction causes the pressure in the reaction chamber 1 to continuously increase, pushing the piston 8 upward, compressing the spring 7. After the piston 8 moves a certain distance, the reaction chamber 1 is connected to the conduit 9, and the ammonia gas enters the gas product absorption chamber 10. There is water stored in the gas product absorption chamber 10, which can absorb the ammonia gas, thus ensuring normal pressure in the reaction chamber 1.

[0033] The specific working process is as follows: Before working, the rotating rod 11 blocks the opening 14 of the reactant storage chamber, as Figure 5 shown, preventing the reactants from falling into the reaction chamber 1.

[0034] When the ice-covered surface 5 of the end cap comes into contact with the lower surface of the ice layer, the internal mechanism starts to work. Refer to Figure 4 - Figure 6 to illustrate the process of feeding the reactants. The rotating rod 11 is used to block the reactants from entering the reaction chamber 1. When the proportional feeding device starts to operate, the servo motor 13 rotates a certain angle, causing the rotating rod 11 to partially rotate away from the opening of the reactant storage chamber 6. Under the action of gravity, the reactants enter the reaction chamber 1 from the opening 14 of the reactant storage chamber. And due to the influence of the transmission ratio of the gear 12, the area opened by the two rotating rods 11 is the same as the coefficient ratio of barium hydroxide octahydrate to ammonium chloride in the chemical reaction equation. The reactants enter the reaction chamber 1 according to the corresponding coefficient ratio in the chemical reaction equation. At this time, the stirrer 4 is started to stir the reactants to make them fully contact and generate an endothermic reaction, causing the temperature in the reaction chamber 1 to decrease. As a result, the temperature of the ice-covered surface 5, which connects the reaction chamber 1, the reactant storage chamber 6, and the ice-covered surface 5 of the end cap as a whole, decreases. Since the lower surface of the ice layer is not a flat and smooth surface, the outer surface of the ice-covered surface 5 of the end cap comes into contact with a certain amount of water. This part of the water freezes due to the temperature decrease and becomes a part of the lower surface of the ice layer. The entire invention is thus fixed to the lower surface, as Figure 1 shown.

[0035] Refer to Figure 2 - Figure 3To describe the implementation of the gas product absorption device 2, it should be noted in advance that the spring 7 and the piston 8 are installed between the reactant chamber 1 and the reactant storage chamber 6, within the gas space of the integrated structure of the housing. This gas pore space channel includes a conduit 9, a spring 7, and a piston 8. Refer to Figure 7 ; the lower end of the conduit 9 is connected to the gas product absorption chamber 10. Refer to Figure 3 , and the gas product absorption chamber 10 is used to store substances that can absorb reaction gases. Taking the endothermic reaction described earlier in the present invention as an example, if the reaction-generated gas is ammonia, then water is stored in the gas product absorption chamber 10; the reaction absorption chamber 1 is blocked from the gas space channel by the piston 8. In other words, the reaction absorption chamber 1 and the gas space are blocked in the non-operating state of the gas product absorption device 2. After the reaction in the reaction chamber 1 proceeds for a period of time, the air pressure in the reaction chamber 1 gradually increases, causing the piston 8 to move upward, and the spring 7 is thus compressed until the lower surface of the piston 8 is higher than the lowest point of the channel. The state at this time is shown in Figure 7 . The gas generated by the reaction can enter the conduit 9 through the channel, and then enter the gas product absorption chamber 10 through the conduit 9, and be absorbed by the liquid in the gas product absorption chamber 10. Refer to Figure 7 . When the gas pushes the piston 8 to compress the spring 7 to the position shown in the figure, the gas enters the channel along the path indicated by the arrow in the figure, and then passes through Figure 3 the indicated conduit 9 into the gas product absorption chamber 10. After the gas is absorbed, the air pressure in the reaction chamber 1 drops. Under the action of the elastic force of the spring 7, the position of the piston 8 drops. After it drops below the lowest point of the channel, the gas space is blocked from the reactant chamber 1.

[0036] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An auxiliary fixing device for re-freezing the lower surface of ice, characterized in that: It includes a heat-insulating outer shell (16), an end-cover ice-forming surface (5), a reactant storage chamber (6), and a reactant reaction chamber (1); the end-cover ice-forming surface (5) is located on the top surface of the heat-insulating outer shell (16) and is not wrapped by the heat-insulating outer shell (16); the reactant reaction chamber (1) and the reactant storage chamber (6) are installed inside the heat-insulating outer shell (16), and reactants A and B are separately stored in the reactant storage chamber (6). During use, the end-cover ice-forming surface (5) contacts the lower surface of the ice. The reactant storage chamber (6) feeds reactants A and B into the reactant reaction chamber (1) in a certain proportion through a proportional feeding device for an endothermic reaction. The heat-insulating outer shell (16) enables the endothermic reaction to absorb the heat of the end-cover ice-forming surface (5), causing the water between the end-cover ice-forming surface (5) and the lower surface of the ice to freeze, thus fixing the entire device to the lower surface of the ice.

2. The ice surface lower surface re-freezing auxiliary fixator according to claim 1, wherein: The equation for the endothermic reaction occurring in the reactant reaction chamber (1) is: Ba(OH)2·8H2O + 2NH4Cl = BaCl2 + 2NH3↑ + 10H2O.

3. The ice surface lower surface re-freezing auxiliary fixator according to claim 2, wherein: The reactant storage chamber (6) is located above the reactant reaction chamber (1). There is a gas space between the reactant storage chamber (6) and the reactant reaction chamber (1). The gas space includes a piston (8) and a conduit (9); the conduit (9) is located in the gas space passage. The reactant reaction chamber (1) is blocked from the gas space by the piston (8). A spring (7) is connected above the piston (8), and a gas absorption chamber (10) is connected below the conduit (9). When gas is generated in the reactant reaction chamber (1), the piston (8) is pushed out, compressing the spring (7), and the gas overflows from the reactant reaction chamber (1), enters the conduit (9) through the passage in the gas space, and then enters the gas product absorption chamber (10) along the conduit (9).

4. The ice surface lower surface re-freezing auxiliary fixator according to claim 3, characterized in that: The bottom of the reaction chamber (1) is of an inverted cone structure.

5. The ice surface lower surface re-freezing auxiliary fixator according to claim 4, characterized in that: A stirrer (4) is provided at the bottom of the reactant reaction chamber (1) to ensure full contact of the reactants.

6. The ice surface lower surface re-freezing auxiliary fixator according to claim 3, characterized in that: The reactant storage chamber (6) is communicated with the reactant reaction chamber (1) through a reactant storage chamber opening (14).

7. The under-ice surface re-freezing auxiliary fixator according to claim 6, characterized in that: The opening ratio of barium hydroxide octahydrate crystals to ammonium chloride crystals in the reactant storage chamber opening (14) is 1:

2.

8. The under-ice surface re-freezing auxiliary fixator according to claim 3, characterized in that: The proportional feeding device includes a gear (12); the gear (12) is located below the gas product absorption chamber (10). The gear (12) includes a driving gear and driven gears. The driven gears are connected to the left and right sides of the driving gear. A servo motor (13) is connected below the driving gear, and a rotating rod (11) is connected to the driven gears.

9. The under-ice surface re-freezing auxiliary fixator according to claim 1, wherein: The reactant reaction chamber (1), the reactant storage chamber (6), and the end-cover ice-forming surface (5) are integrally connected.

10. The ice surface lower surface re-freezing auxiliary fixator according to claim 9, characterized in that: The reactant reaction chamber (1), the end-cover ice-forming surface (5), and the reactant storage chamber (6) are all made of heat-conductive materials.

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