Efficient and stable liquid nitrogen tank filling device

Abstract

The utility model discloses an efficient and stable liquid nitrogen tank filling device, which relates to the technical field of liquid nitrogen filling and comprises a filling component and a supporting component. The filling assembly comprises a bottom plate, a storage tank is arranged at the top of the bottom plate, the bottom end of the storage tank communicates with a filling pipe, and an electromagnetic valve is arranged at the bottom of the filling pipe; the liquid nitrogen filling device has the advantages that a plurality of liquid nitrogen tanks to be filled are placed in the corresponding positioning grooves respectively, the electromagnetic valves are controlled to be opened, liquid nitrogen in the storage tanks enters the inlet ends of the liquid nitrogen tanks through the filling pipes to be filled, and after filling is completed, the output shaft of the forward and reverse rotation servo motor is controlled to rotate to drive the gears to rotate, so that the liquid nitrogen tanks are filled with liquid nitrogen. The gear is meshed with the inner gear ring to drive the supporting circular cover and the positioning groove to rotate, the positioning groove is controlled to rotate to drive the next to-be-filled liquid nitrogen tank to move to the bottom of the filling pipe, then the multiple to-be-filled liquid nitrogen tanks are efficiently and stably filled in sequence, and the technical problem that more efficient and stable filling is inconvenient is solved.

Description

Technical Field

[0001] The utility model relates to a liquid nitrogen tank filling device, in particular to an efficient and stable liquid nitrogen tank filling device, belonging to the technical field of liquid nitrogen filling. Background Art

[0002] The chemical formula of liquid nitrogen is N2. It is liquid nitrogen. It is colorless, odorless, non-corrosive, non-flammable, and has an extremely low temperature. Under normal pressure, the temperature of liquid nitrogen is minus 196°C. 1 cubic meter of liquid nitrogen can expand to 696 cubic meters of pure gaseous nitrogen at 21°C. It should be stored in a cool, ventilated warehouse. Skin contact with liquid nitrogen can cause frostbite. Good natural ventilation conditions should be provided when filling liquid nitrogen tanks. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear cold-proof clothing and cold-proof gloves to prevent gas leakage into the air in the workplace. They should be loaded and unloaded gently during transportation to prevent damage to liquid nitrogen tank cylinders and accessories. Leakage emergency treatment equipment should be equipped.

[0003] Among them, the application number is "CN202022326398.1" is a liquid nitrogen biological tank filling system, which includes a liquid nitrogen biological tank and a storage tank, the liquid nitrogen biological tank is provided with a visual liquid level gauge, the liquid nitrogen biological tank is provided with a liquid guide tube, the liquid guide tube is inserted into the bottom of the liquid nitrogen biological tank, and is connected to a hollow sphere at the lower end, a plurality of liquid guide holes are opened on the hollow sphere, the upper end of the liquid guide tube passes through the filling port of the liquid nitrogen biological tank and is connected to one end of the filling hose through a joint, the liquid guide tube is provided with a sealing cover, the sealing cover is threadedly connected to the filling port, and the other end of the filling hose is connected to the storage tank. The utility model utilizes a visual liquid level gauge and an electronic scale to avoid overcharging and liquid overflow, and the operation is safe and reliable, labor-saving and time-saving, and the amount of nitrogen gasification during filling is small, which can effectively avoid the waste and safety hazards caused by gasification of liquid nitrogen.

[0004] However, the above-mentioned method still has certain shortcomings when used. When multiple liquid nitrogen tanks need to be filled in sequence, the staff needs to frequently move the liquid nitrogen tanks to different locations in each step, which is time-consuming and labor-intensive, and is not conducive to more efficient and stable filling. Utility Model Content

[0005] The purpose of the utility model is to provide an efficient and stable liquid nitrogen tank filling device to solve the problem of inconvenience in more efficient and stable filling proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an efficient and stable liquid nitrogen tank filling device, comprising a filling assembly and a support assembly; the filling assembly comprises a bottom plate, a storage tank is provided on the top of the bottom plate, a filling pipe is connected to the bottom end of the storage tank, and a solenoid valve is provided at the bottom of the filling pipe; the support assembly comprises a supporting circular groove, the supporting circular groove is arranged in the middle of the top end of the bottom plate, a supporting circular cover is rotatably provided inside the supporting circular groove through a supporting bearing, a positioning groove is provided on the outer ring of the top end of the supporting circular cover, and the angle of the supporting circular cover is adjusted by a rotating mechanism.

[0007] As a preferred technical solution of the utility model, L-shaped support frames are provided on both sides of the top of the bottom plate, and an electric hydraulic cylinder is provided on the top of the inner wall of each L-shaped support frame.

[0008] As a preferred technical solution of the utility model, a support ring is sleeved on the bottom of the storage tank, and two sides of the top of the support ring are respectively connected to the output ends of the corresponding electric hydraulic cylinder.

[0009] As a preferred technical solution of the utility model, the middle part of the top end of the storage tank is connected with a filling hopper, and the top end thread sleeve of the filling hopper is provided with a sealing cover.

[0010] As a preferred technical solution of the utility model, support legs are provided at the four corners of the bottom end of the base plate, and a universal wheel is provided at the bottom end of each of the support legs.

[0011] As a preferred technical solution of the utility model, the rotating mechanism includes a forward and reverse servo motor, and the forward and reverse servo motor is arranged on one side of the bottom end of the inner wall of the supporting circular groove.

[0012] As a preferred technical solution of the utility model, the output shaft sleeve of the forward and reverse servo motor is provided with a gear, and the top of the inner wall of the supporting circular cover is provided with an internal gear ring meshing with the gear.

[0013] Compared with the related art, the efficient and stable liquid nitrogen tank filling device provided by the utility model has the following beneficial effects:

[0014] By placing multiple liquid nitrogen tanks to be filled in corresponding positioning grooves respectively, the solenoid valve is controlled to open, and the liquid nitrogen in the storage tank enters the inlet end of the liquid nitrogen tank through the filling pipe for filling. After one of the liquid nitrogen tanks is filled, the output shaft of the forward and reverse servo motor is controlled to rotate to drive the gear to rotate. The gear rotation drives the internal gear ring to rotate by meshing with the internal gear ring. The rotation of the internal gear ring drives the positioning groove to rotate through the supporting circular cover. The positioning groove is controlled to rotate to drive the next liquid nitrogen tank to be filled to the bottom of the filling pipe, and then the multiple liquid nitrogen tanks to be filled are efficiently and stably filled in turn, thereby solving the technical problem of inconvenience in more efficient and stable filling. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at B.

[0019] In the figure: 1. Filling assembly; 101. Bottom plate; 102. Storage tank; 103. Filling pipe; 104. Solenoid valve; 105. L-shaped support frame; 106. Electric hydraulic cylinder; 107. Support ring; 108. Filling hopper; 109. Sealing cover; 1010. Support leg; 1011. Universal wheel; 2. Support assembly; 201. Support circular groove; 202. Support bearing; 203. Support circular cover; 204. Positioning groove; 205. Forward and reverse servo motor; 206. Gear; 207. Internal gear ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1:

[0022] See also Figure 1-4 , the utility model provides an efficient and stable liquid nitrogen tank filling device, including a filling component 1 and a supporting component 2;

[0023] The filling assembly 1 includes a bottom plate 101, a storage tank 102 is provided on the top of the bottom plate 101, a filling pipe 103 is fixedly connected to the bottom end of the storage tank 102, and a solenoid valve 104 is fixedly provided at the bottom of the filling pipe 103 to facilitate the control of the discharge;

[0024] L-shaped support frames 105 are fixedly provided on both sides of the top of the bottom plate 101, and an electric hydraulic cylinder 106 is fixedly provided on the top of the inner wall of each L-shaped support frame 105 to facilitate the installation of a support ring 107;

[0025] A support ring 107 is provided at the bottom fixed sleeve of the storage tank 102. Both sides of the top of the support ring 107 are fixedly connected to the output ends of the corresponding electric hydraulic cylinder 106, so as to drive the support ring 107 to move up and down.

[0026] The middle part of the top of the storage tank 102 is fixedly connected with a filling hopper 108, and the top thread sleeve of the filling hopper 108 is provided with a sealing cover 109 to provide sealing protection;

[0027] Support legs 1010 are fixedly provided at the four corners of the bottom end of the bottom plate 101, and a universal wheel 1011 is fixedly provided at the bottom end of each support leg 1010, so as to provide the device with a movable function;

[0028] Specifically, first, the sealing cover 109 is rotated to open, and an appropriate amount of liquid nitrogen is injected into the storage tank 102 through the injection hopper 108. By placing multiple liquid nitrogen tanks to be filled in the corresponding positioning grooves 204, the output ends of the two electric hydraulic cylinders 106 are controlled to telescopically adjust to drive the filling pipe 103 to be inserted into the inlet end of one of the liquid nitrogen tanks through the support ring 107 and the storage tank 102, and the solenoid valve 104 is controlled to open, and the liquid nitrogen inside the storage tank 102 enters the inlet end of the liquid nitrogen tank through the filling pipe 103 for filling.

[0029] Embodiment 2:

[0030] The support assembly 2 includes a support circular groove 201, which is fixedly arranged in the middle of the top of the bottom plate 101. A support circular cover 203 is rotatably arranged inside the support circular groove 201 through a support bearing 202. A positioning groove 204 is fixedly arranged on the outer ring of the top of the support circular cover 203. The support circular cover 203 is adjusted in angle through a rotating mechanism, which is convenient for rotation adjustment.

[0031] The rotating mechanism includes a forward and reverse servo motor 205, which is fixedly arranged on one side of the bottom end of the inner wall of the supporting circular groove 201 to facilitate the installation of the gear 206;

[0032] The output shaft of the forward and reverse servo motor 205 is fixed with a gear 206, and the top of the inner wall of the support circle cover 203 is fixed with an internal gear ring 207 meshing with the gear 206 to drive the support circle cover 203 to rotate;

[0033] Specifically, first, the output shaft of the forward and reverse servo motor 205 is controlled to rotate to drive the gear 206 to rotate. The gear 206 rotates and engages with the inner gear ring 207 to drive the inner gear ring 207 to rotate. The inner gear ring 207 rotates and drives the positioning groove 204 to rotate through the supporting round cover 203. The positioning groove 204 is controlled to rotate to drive the next liquid nitrogen tank to be filled to the bottom of the filling tube 103, and then the multiple liquid nitrogen tanks to be filled are efficiently and stably filled in turn, thereby solving the technical problem of inconvenience in more efficient and stable filling.

[0034] When in use, first place the efficient and stable liquid nitrogen tank filling device in the corresponding working position, and then check whether all parts of the efficient and stable liquid nitrogen tank filling device are working properly. After the inspection is completed, it can be used. When in use, rotate and open the sealing cover 109, inject an appropriate amount of liquid nitrogen into the storage tank 102 through the injection hopper 108, and place a plurality of liquid nitrogen tanks to be filled in the corresponding positioning grooves 204 respectively, control the output end telescopic adjustment of the two electric hydraulic cylinders 106 to drive the filling pipe 103 to be inserted into the inlet end of one of the liquid nitrogen tanks through the support ring 107 and the storage tank 102, control the solenoid valve 104 to open, and the storage The liquid nitrogen inside the tank 102 enters the inlet end of the liquid nitrogen tank through the filling pipe 103 for filling. After one of the liquid nitrogen tanks is filled, the output shaft of the forward and reverse servo motor 205 is controlled to rotate to drive the gear 206 to rotate. The gear 206 rotates and engages with the inner gear ring 207 to drive the inner gear ring 207 to rotate. The inner gear ring 207 rotates and drives the positioning groove 204 to rotate through the supporting round cover 203. The positioning groove 204 is controlled to rotate to drive the next liquid nitrogen tank to be filled to move to the bottom of the filling pipe 103, and then the multiple liquid nitrogen tanks to be filled are efficiently and stably filled in turn, thereby solving the technical problem of inconvenience in more efficient and stable filling.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient and stable liquid nitrogen tank filling device, characterized in that: include A filling assembly (1), the filling assembly (1) comprising a bottom plate (101), a storage tank (102) being provided on the top of the bottom plate (101), a filling pipe (103) being connected to the bottom end of the storage tank (102), and a solenoid valve (104) being provided at the bottom of the filling pipe (103); A support assembly (2), the support assembly (2) comprising a support circular groove (201), the support circular groove (201) being arranged in the middle of the top end of the bottom plate (101), a support circular cover (203) being rotatably arranged inside the support circular groove (201) via a support bearing (202), a positioning groove (204) being arranged on the outer ring of the top end of the support circular cover (203), and the angle of the support circular cover (203) being adjusted via a rotating mechanism.

2. According to claim 1, a highly efficient and stable liquid nitrogen tank filling device is characterized in that: L-shaped support frames (105) are provided on both sides of the top of the bottom plate (101), and an electric hydraulic cylinder (106) is provided on the top of the inner wall of each L-shaped support frame (105).

3. According to claim 2, an efficient and stable liquid nitrogen tank filling device is characterized in that: A support ring (107) is sleeved on the bottom of the storage tank (102), and two sides of the top of the support ring (107) are respectively connected to the output ends of the corresponding electric hydraulic cylinder (106).

4. According to claim 1, a highly efficient and stable liquid nitrogen tank filling device is characterized in that: The middle part of the top end of the storage tank (102) is connected to a material injection hopper (108), and a sealing cover (109) is threadedly sleeved on the top end of the material injection hopper (108).

5. According to claim 1, a highly efficient and stable liquid nitrogen tank filling device is characterized in that: Support legs (1010) are provided at four corners of the bottom end of the base plate (101), and a universal wheel (1011) is provided at the bottom end of each support leg (1010).

6. The efficient and stable liquid nitrogen tank filling device according to claim 1 is characterized in that: The rotating mechanism comprises a forward and reverse servo motor (205), and the forward and reverse servo motor (205) is arranged on one side of the bottom end of the inner wall of the supporting circular groove (201).

7. The efficient and stable liquid nitrogen tank filling device according to claim 6 is characterized in that: The output shaft sleeve of the forward and reverse servo motor (205) is provided with a gear (206), and the top of the inner wall of the supporting circular cover (203) is provided with an internal gear ring (207) meshingly connected with the gear (206).

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