A pressure source device for converting liquid nitrogen into nitrogen gas

Abstract

The utility model discloses a pressure source device for liquid nitrogen is converted into nitrogen gas relates to liquid nitrogen equipment technical field, including gasification chamber, the cavity is opened in the gasification chamber, the outside wall of gasification chamber is equipped with the injection port of the cavity of the gasification chamber is penetrated, be equipped with heating stirring mechanism in the gasification chamber, and heating stirring mechanism includes the heating cavity of the middle lower end setting of the cavity of gasification chamber, the upper surface center position of gasification chamber is installed motor, the driving shaft of motor is connected with the pivot in the gasification chamber, the outer arc wall of pivot is equipped with carousel, and the inner bottom wall of heating cavity is located carousel, and the upper surface of carousel is installed a plurality of annular interval distribution's mounting strip, in the utility model, through the joint action of heating environment in heating cavity and stirring mechanism, liquid nitrogen can be heated rapidly and evenly to accelerate the gasification process, and the design of stirring vane ensures that liquid nitrogen is fully mixed in the gasification process, and further improves the gasification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen equipment technology, specifically a pressure source device for converting liquid nitrogen into nitrogen gas. Background Technology

[0002] Liquid nitrogen is a commonly used cryogenic liquid, widely used in industry, medicine, scientific research and other fields. Because liquid nitrogen will rapidly vaporize and absorb a large amount of heat at room temperature and pressure, it is usually stored in liquid form. Due to its high density and low boiling point, liquid nitrogen is often used as the main form of nitrogen storage and transportation.

[0003] However, in the process of converting liquid nitrogen into nitrogen gas, a large amount of heat needs to be absorbed. Traditional methods often rely on simple heating boxes for heating. This method not only has low vaporization efficiency but also a long working cycle, making it difficult to meet the demand for efficient and continuous gas supply. In addition, the lack of effective auxiliary vaporization methods may also lead to local overheating of liquid nitrogen during the vaporization process, affecting the purity of nitrogen gas and the safety of the device. Utility Model Content

[0004] The purpose of this invention is to provide a pressure source device for converting liquid nitrogen into nitrogen gas, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a pressure source device for converting liquid nitrogen into nitrogen gas, including a vaporization chamber. A cavity is formed inside the vaporization chamber. An injection port extending through the cavity into the outer wall of the vaporization chamber is provided. A heating and stirring mechanism is provided inside the vaporization chamber. The heating and stirring mechanism includes a heating chamber located at the lower middle end of the cavity of the vaporization chamber. A motor is installed at the center of the upper surface of the vaporization chamber. The drive shaft of the motor is connected to a rotating shaft located inside the vaporization chamber. A turntable is fitted onto the outer arc wall of the rotating shaft. The turntable is located on the inner bottom wall of the heating chamber. A plurality of equally spaced, annular mounting strips are installed on the upper surface of the turntable. A plurality of vertically equally spaced stirring blades are installed on the mounting strips and are attached to the inner sidewall of the heating chamber. A plurality of equally spaced, annular heating rods are installed on the upper surface of the turntable between the rotating shaft and the mounting strips.

[0006] Furthermore, a collection box is installed on the other side wall of the vaporization chamber away from the injection port. The vaporization chamber has a connecting port above the heating chamber that passes through and communicates with the movable plate. An air outlet pipe is connected to the other side wall of the collection box located at the connecting port. A movable plate that fits against the inner side wall of the collection box is installed on the inner side wall of the collection box. A reciprocating screw is threadedly connected to the center of the movable plate.

[0007] Furthermore, both the gasification chamber and the collection box have installation cavities at their bottoms, and a square groove that runs through the gasification chamber and the collection box is connected between the two installation cavities. The bottom ends of the rotating shaft and the reciprocating screw are rotatably connected to the inner bottom wall of the installation cavity. Pulleys are installed on the outer arc wall of the rotating shaft and the reciprocating screw located in the installation cavity. A belt that passes through the square groove is installed between the two pulleys and is connected by belt drive.

[0008] Furthermore, a rubber gasket is fitted on the outer wall of the movable plate.

[0009] Furthermore, the connecting port is equipped with a first one-way valve, and the air outlet pipe is equipped with a second one-way valve.

[0010] Furthermore, the heating rod is fitted with a heat-insulating sleeve that is fixedly connected to the upper surface of the turntable.

[0011] Furthermore, the heat insulation rod sleeve has several circular holes.

[0012] Furthermore, a limit block is installed at the top of the reciprocating lead screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model utilizes the combined effect of the heating environment within the heating chamber and the stirring mechanism to rapidly and uniformly heat liquid nitrogen, thereby accelerating the vaporization process. The design of the stirring blades ensures that the liquid nitrogen is fully mixed during the vaporization process, further improving the vaporization efficiency. The heating rod, used in conjunction with the heat insulation sleeve, can transfer heat to the liquid nitrogen while avoiding direct impact of heat on other parts of the device. The round hole design on the heat insulation sleeve allows for appropriate heat transfer while maintaining the heat insulation effect, achieving precise heat control.

[0015] 2. Through the cooperation of the multi-screw and the movable plate, the device can automatically adjust the pressure and volume of nitrogen in the collection box. This design not only simplifies the operation process, but also enables the device to output nitrogen at different pressures according to different needs. The rubber gasket on the outside of the movable plate enhances the sealing of the device and prevents gas leakage. At the same time, the setting of the first one-way valve and the second one-way valve ensures the unidirectional flow of gas, improving the safety and reliability of the device. Attached Figure Description

[0016] Figure 1 A schematic diagram of the main body of a pressure source device for converting liquid nitrogen into nitrogen gas;

[0017] Figure 2 This is a schematic diagram of the structure inside the vaporization chamber and collection box in a pressure source device for converting liquid nitrogen into nitrogen gas.

[0018] Figure 3This is a schematic diagram of the structure above the turntable in a pressure source device for converting liquid nitrogen into nitrogen gas.

[0019] Figure 4 This is a schematic diagram of the structure inside the mounting cavity of a pressure source device used to convert liquid nitrogen into nitrogen gas.

[0020] In the picture:

[0021] 1. Gasification chamber; 2. Collection box; 3. Liquid injection port; 4. Gas outlet pipe; 5. Motor; 6. Heating chamber; 7. Rotating shaft; 8. Connecting port; 9. Movable plate; 10. Turntable; 11. Mounting strip; 12. Stirring blade; 13. Heat insulation rod sleeve; 14. Round hole; 15. Heating rod; 16. Mounting cavity; 17. Square groove; 18. Pulley; 19. Belt; 20. Reciprocating screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] See Figure 1 and Figure 3 As shown, a pressure source device for converting liquid nitrogen into nitrogen gas includes a vaporization chamber 1, which has a cavity. The outer wall of the vaporization chamber 1 has an injection port 3 extending into the cavity. A heating and stirring mechanism is provided within the vaporization chamber 1, comprising a heating chamber 6 located in the lower middle section of the cavity. A motor 5 is mounted at the center of the upper surface of the vaporization chamber 1. The drive shaft of the motor 5 is connected to a rotating shaft 7 located within the vaporization chamber 1. A turntable 10 is fitted onto the outer arc wall of the rotating shaft 7. Located on the inner bottom wall of the heating chamber 6, the upper surface of the turntable 10 is equipped with several mounting strips 11 arranged in a ring at equal intervals. The mounting strips 11 are equipped with several stirring blades 12 arranged in a vertical direction at equal intervals and attached to the inner side wall of the heating chamber 6. The upper surface of the turntable 10 is equipped with several heating rods 15 arranged in a ring at equal intervals between the rotating shaft 7 and the mounting strips 11. The heating rods 15 are fitted with heat insulation rod sleeves 13 that are fixedly connected to the upper surface of the turntable 10. The heat insulation rod sleeves 13 have several round holes 14.

[0025] In the specific implementation process, the heating chamber 6 is equipped with an electric heating wire to provide a heating environment to accelerate the vaporization of liquid nitrogen. The motor 5 drives the rotating shaft 7 to rotate, which in turn drives the rotating shaft 7 connected to it to stir. The rotating disk 10 sleeved on the outer arc wall of the rotating shaft 7 serves as a support platform for the stirring blades 12 and the heating rods 15. These stirring blades 12 are in contact with the inner side wall of the heating chamber 6 and stir the liquid nitrogen as the rotating disk 10 rotates, promoting the vaporization process. Each heating rod 15 is fitted with a heat insulation rod sleeve 13 that is fixedly connected to the upper surface of the rotating disk 10 to prevent the heat generated by the heating rod 15 from being directly transferred to the rotating disk 10 or other components, thus protecting the heating rod 15. The heat insulation rod sleeve 13 has several round holes 14, which allow heat to be transferred to the liquid nitrogen through the heat insulation rod sleeve 13 while maintaining the heat insulation effect.

[0026] See Figure 2 and Figure 4 As shown, a collection box 2 is installed on the other side wall of the vaporization chamber 1 away from the injection port 3. The vaporization chamber 1 has a connecting port 8 above the heating chamber 6, which passes through and communicates with the movable plate 9. The collection box 2 is connected to the gas outlet pipe 4 on the other side wall of the connecting port 8. The inner side wall of the collection box 2 is fitted with a movable plate 9 that fits against the inner side wall of the collection box 2. A rubber gasket is fitted on the outer side wall of the movable plate 9. A reciprocating screw 20 is threadedly connected to the center of the movable plate 9. Both the bottom of the vaporization chamber 1 and the collection box 2 have an installation cavity 16. A square groove 17 that passes through the vaporization chamber 1 and the collection box 2 communicates between the two installation cavities 16. The bottom ends of the rotating shaft 7 and the reciprocating screw 20 are rotatably connected to the inner bottom wall of the installation cavity 16. Both the rotating shaft 7 and the reciprocating screw 20 are equipped with pulleys 18 on the outer arc wall of the installation cavity 16. A belt 19 that passes through the square groove 17 is installed between the two pulleys 18 and is connected by the belt 19. A limit block is installed on the top of the reciprocating screw 20. In the specific implementation process, when the motor 5 drives the rotating shaft 7 to rotate, the pulley 18 on the rotating shaft 7 also rotates. Through the transmission of the belt 19, the pulley 18 on the reciprocating screw 20 also begins to rotate, thereby driving the reciprocating screw 20 to rotate. The rotation of the reciprocating screw 20 causes the movable plate 9, which is threadedly connected to it, to move up and down in the collection box 2. When the movable plate 9 moves downward, the nitrogen in the vaporization chamber 1 enters the collection box 2 through the connecting port 8. When the movable plate 9 moves upward, the nitrogen in the collection box 2 is compressed and discharged through the exhaust pipe 4. This reciprocating motion not only helps to collect nitrogen, but also increases the pressure of nitrogen to a certain extent. The outer wall of the movable plate 9 is fitted with a rubber gasket to enhance the sealing performance. The limiting block installed on the top of the reciprocating screw 20 can prevent the movable plate 9 from falling out.

[0027] See Figure 1As shown, the connecting port 8 is equipped with a first one-way valve, and the outlet pipe 4 is equipped with a second one-way valve. In the specific implementation process, during the operation of the device, liquid nitrogen enters the vaporization chamber 1 through the injection port 3 and gradually vaporizes under the heating action of the heating chamber 6. The vaporized nitrogen enters the collection tank 2 through the first one-way valve of the connecting port 8. Due to the presence of the first one-way valve, the nitrogen can only flow in one direction, ensuring gas isolation between the vaporization chamber 1 and the collection tank 2. When the nitrogen in the collection tank 2 reaches a certain pressure, it is discharged from the device through the second one-way valve of the outlet pipe 4. The second one-way valve also ensures the one-way flow of gas and prevents the mixing of external gases.

[0028] Working principle:

[0029] Step 1: Liquid nitrogen is injected into the cavity of vaporization chamber 1 through the injection port 3 on the outer wall of vaporization chamber 1. A heating chamber 6 is provided inside vaporization chamber 1, and heating wires are arranged in heating chamber 6 to provide a heating environment and accelerate the vaporization process of liquid nitrogen. Motor 5 is installed at the center of the upper surface of vaporization chamber 1, and its drive shaft is connected to a rotating shaft 7. A turntable 10 is sleeved on the outer arc wall of rotating shaft 7. The turntable 10 is located on the bottom wall of the heating chamber 6. Several annularly spaced mounting strips 11 are installed on the upper surface of the turntable 10. Several vertically spaced stirring blades 12 are installed on the mounting strips 11. These stirring blades 12 interact with the heating wires. The inner wall of the hot chamber 6 is fitted together. When the motor 5 drives the rotating shaft 7 to rotate, the turntable 10 rotates accordingly, driving the stirring blades 12 to stir the liquid nitrogen and promote the vaporization process. Several heating rods 15 are installed on the upper surface of the turntable 10 between the rotating shaft 7 and the mounting strip 11 in a ring. Each heating rod 15 is fitted with a heat insulation rod sleeve 13 that is fixedly connected to the upper surface of the turntable 10 to prevent the heat generated by the heating rod 15 from being directly transferred to the turntable 10 or other components. Several round holes 14 are opened on the heat insulation rod sleeve 13 to allow heat to be transferred to the liquid nitrogen through the heat insulation rod sleeve 13 while maintaining the heat insulation effect.

[0030] Step 2: A collection box 2 is installed on the side wall of the vaporization chamber 1 away from the injection port 3. The vaporization chamber 1, located above the heating chamber 6, has a connecting port 8 that passes through and connects to the movable plate 9. The connecting port 8 is equipped with a first one-way valve to ensure unidirectional nitrogen flow. The collection box 2, located on the other side wall of the connecting port 8, is connected to an outlet pipe 4. The outlet pipe 4 is equipped with a second one-way valve. The movable plate 9 is installed on the inner wall of the collection box 2. A rubber gasket is fitted on the outer wall of the movable plate 9 to enhance sealing. A reciprocating screw 20 is threadedly connected to the center of the movable plate 9. A reciprocating screw 20 is installed at the top of the reciprocating screw 20. A limit block prevents the movable plate 9 from detaching. When the motor 5 drives the rotating shaft 7 to rotate, the reciprocating screw 20 also rotates through the belt 19, causing the movable plate 9 to move up and down in the collection box 2. When the movable plate 9 moves downward, the nitrogen in the vaporization chamber 1 enters the collection box 2 through the connecting port 8. When the movable plate 9 moves upward, the nitrogen in the collection box 2 is compressed and discharged through the outlet pipe 4, increasing the nitrogen pressure. Through the above steps, liquid nitrogen is heated and stirred in the vaporization chamber 1, converted into nitrogen, and then compressed and discharged through the collection box 2, thus realizing the supply of nitrogen pressure source.

Claims

1. A pressure source device for converting liquid nitrogen into nitrogen gas, comprising a vaporization chamber (1), wherein a cavity is provided within the vaporization chamber (1), and an injection port (3) is provided on the outer wall of the vaporization chamber (1) extending into the cavity of the vaporization chamber (1), characterized in that, The gasification chamber (1) is equipped with a heating and stirring mechanism, which includes a heating chamber (6) located in the lower middle section of the gasification chamber (1). A motor (5) is installed at the center of the upper surface of the gasification chamber (1). The drive shaft of the motor (5) is connected to a rotating shaft (7) located in the gasification chamber (1). A turntable (10) is fitted on the outer arc wall of the rotating shaft (7). The turntable (10) is located on the inner bottom wall of the heating chamber (6). Several mounting strips (11) are installed on the upper surface of the turntable (10) in a ring-shaped and equally spaced manner. Several stirring blades (12) are installed on the mounting strips (11) in a vertical direction and are attached to the inner side wall of the heating chamber (6). Several heating rods (15) are installed on the upper surface of the turntable (10) between the rotating shaft (7) and the mounting strips (11).

2. The pressure source device for converting liquid nitrogen into nitrogen gas as described in claim 1, characterized in that: A collection box (2) is installed on the other side wall of the vaporization chamber (1) away from the injection port (3). The vaporization chamber (1) is located above the heating chamber (6) and has a through-hole (8) that is connected to the movable plate (9). The collection box (2) is connected to the other side wall of the through-hole (8) by an air outlet pipe (4). The inner side wall of the collection box (2) is fitted with a movable plate (9) that fits against the inner side wall of the collection box (2). A reciprocating screw (20) is threadedly connected to the center of the movable plate (9).

3. A pressure source device for converting liquid nitrogen into nitrogen gas as described in claim 2, characterized in that: The bottom of the gasification chamber (1) and the collection box (2) are provided with an installation cavity (16). A square groove (17) that runs through the gasification chamber (1) and the collection box (2) is connected between the two installation cavities (16). The bottom ends of the rotating shaft (7) and the reciprocating screw (20) are rotatably connected to the inner bottom wall of the installation cavity (16). The rotating shaft (7) and the reciprocating screw (20) are both equipped with pulleys (18) on the outer arc wall inside the installation cavity (16). A belt (19) that passes through the square groove (17) is installed between the two pulleys (18) and is connected by transmission through the belt (19).

4. A pressure source device for converting liquid nitrogen into nitrogen gas as described in claim 3, characterized in that: The outer wall of the movable plate (9) is fitted with a rubber gasket.

5. A pressure source device for converting liquid nitrogen into nitrogen gas as described in claim 4, characterized in that: The connecting port (8) is equipped with a first one-way valve, and the air outlet pipe (4) is equipped with a second one-way valve.

6. A pressure source device for converting liquid nitrogen into nitrogen gas as described in claim 5, characterized in that: The heating rod (15) is fitted with a heat insulation rod sleeve (13) that is fixedly connected to the upper surface of the turntable (10).

7. A pressure source device for converting liquid nitrogen to nitrogen gas as described in claim 6, characterized in that: The heat insulation rod sleeve (13) has several round holes (14).

8. A pressure source device for converting liquid nitrogen to nitrogen gas as described in claim 7, characterized in that: A limit block is installed on the top of the reciprocating lead screw (20).

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