Press-in type ice particle jet flow generating device and using method thereof

Abstract

The invention relates to the technical field of jet flow operation, and particularly discloses a press-in type ice particle jet flow generating device and a using method thereof.A high-pressure tank is placed in a heat preservation bin, then liquid nitrogen is introduced, liquid nitrogen atomization cooling provides a low-temperature cold source to cool the high-pressure tank in the heat preservation bin, and a low-temperature environment is formed; the ice particles are conveyed into the high-pressure tank, the problem that the surfaces of the ice particles are melted and caked in the high-pressure tank is avoided, the clear ice particles can be conveniently jetted under the high-pressure effect, and when the ice particles are added into the high-pressure tank, the draught fan is adopted for providing power to convey the ice particles into the high-pressure tank; and an internal circulation type air duct formed by the heat preservation bin, the fan and the buffer tank effectively avoids loss of cold air.

Description

Technical Field

[0001] This invention relates to the field of jet operation technology, and more specifically to a pressure-type ice particle jet generator. Background Technology

[0002] Currently, the main methods for rust removal, coating, and corrosion protection of metal surfaces in China are sandblasting (such as the sandblasting device disclosed in patent number CN202022922440.6) and ultra-high pressure water rust removal. The medium used in sandblasting is mineral sand, which causes heavy metal dust pollution, directly harming the atmospheric environment and the physical and mental health of workers. The medium used in ultra-high pressure water rust removal is drinking tap water, but because the water does not carry a friction-removing medium, its rust removal effect is much worse.

[0003] Therefore, the inventor wanted to use ice as a medium for ice jet rust removal to solve the above problems. In the initial experiments, there were two ways to generate ice jets: One method involves drawing in ice particles through negative pressure created by compressed air in a gas nozzle. After mixing, the ice particles are accelerated by a high-speed airflow to form a high-speed ice particle stream that impacts the surface of the object, achieving the purpose of cleaning and rust removal. This method has simple equipment and is easy to operate, but the airflow does not accelerate the ice particles sufficiently, and the speed of the ice particles is limited, resulting in low performance of the ice jet. Another method is the forced-flow ice jet generation method. This involves storing ice pellets in a high-pressure tank and mixing them with high-pressure gas through a high-pressure mixing chamber. The gas flow carries the ice pellets as they expand in the nozzle, gaining acceleration along with the gas flow. Because the ice pellets and gas flow accelerate synchronously, the resulting ice jet stream has a high velocity and good performance. However, after the ice pellets are removed from the granular ice maker and placed into the tank, varying degrees of fusion occur on their surface, forming a water film. This leads to the problem of ice pellets sticking together and clumping, resulting in poor flowability and severe ice blockage during jetting. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a pressure-driven ice jet generator. This device involves placing a high-pressure tank inside an insulated chamber and then introducing liquid nitrogen. The liquid nitrogen atomizes and cools the high-pressure tank inside the insulated chamber, creating a low-temperature environment. This prevents the ice particles from melting and clumping on the surface inside the high-pressure tank, and the distinct ice particles facilitate jetting under high pressure.

[0005] The technical solution of the present invention is: a pressure-driven ice pellet jet generator, comprising a high-pressure tank, an insulated chamber, a pellet ice machine, a blower, a first three-way connector, a second three-way connector, and a jet pipe; The outlet of the granular ice machine is connected to a buffer tank. The insulated chamber is equipped with a door, a liquid nitrogen input pipe, an exhaust vent, and an ice inlet. The ice inlet is located at the top of the insulated chamber. The ice inlet is connected to the buffer tank via a first conduit, the buffer tank is connected to the air outlet of the fan via a second conduit, and the air inlet of the fan is connected to the exhaust outlet via a third conduit. The buffer tank is located inside the insulation chamber, and the top of the buffer tank is provided with a feeding port that corresponds to the ice inlet position. A pneumatic valve is installed on the feeding port, and the bottom of the buffer tank is provided with a discharge port. One of the first three-way connectors is connected to a high-pressure pipeline, another is connected to a pneumatic valve via a fourth conduit, and the third is connected to a second three-way connector via a fifth conduit. The other two paths of the second three-way connector are connected to the discharge port and the jet pipe, respectively.

[0006] Preferably, the insulated chamber is equipped with an active pressure relief valve that communicates with the inner cavity.

[0007] Preferably, a vibrator is provided on the outside of the high-pressure tank, and a vibration damping pad is provided between the high-pressure tank and the bottom surface of the insulation chamber.

[0008] Preferably, the bottom of the buffer tank has a conical structure, and the upper end of the feeding port has a funnel-shaped structure.

[0009] Preferably, a mesh cover is connected between the ice inlet and the feed inlet.

[0010] Preferably, the buffer tank is provided with an inspection port, and a blind flange is detachably connected to the inspection port.

[0011] Preferably, regulating valves are installed on the fourth conduit, the fifth conduit, the jet pipe, and the discharge port.

[0012] A method of using a forced-injection ice jet generator includes the following steps: 1) Connect the liquid nitrogen input pipe to the liquid nitrogen supply pipe. The liquid nitrogen enters the insulation chamber through the liquid nitrogen input pipe and is atomized to cool the inside of the insulation chamber. 2) Start the granular ice machine to make ice pellets into the buffer tank, then start the blower. The air generated by the blower carries the ice pellets in the buffer tank into the insulation chamber. The ice pellets fall from the ice inlet and enter the high-pressure tank through the feeding port. The air then enters the blower again through the exhaust port to form an internal circulation. After feeding is completed, turn off the granular ice machine and the blower. 3) Start the high-pressure pipeline to supply gas. Part of the high-pressure gas reaches the pneumatic valve through the fourth conduit and drives the pneumatic valve to close the feed port. The other part enters the high-pressure tank through the fifth conduit and the feed port to pressurize the tank. 4) When performing ice jet operation, turn on the jet tube, and the ice particles will be ejected from the jet tube under the drive of high-pressure gas.

[0013] Compared with the prior art, the present invention has the following advantages: This invention places a high-pressure tank in an insulated chamber and then introduces liquid nitrogen. The liquid nitrogen atomizes and cools the high-pressure tank in the insulated chamber to provide a low-temperature cold source, thus creating a low-temperature environment. This avoids the problem of ice particles melting and clumping on the surface inside the high-pressure tank. The distinct ice particles are easy to jet under the action of high-pressure gas. Using liquid nitrogen for cooling results in a fast temperature reduction. Combined with an insulated chamber to create a low-temperature environment, it can prevent the loss of cold air. In addition, the door on the insulated chamber allows for maintenance of the interior. The ice pellet feeding method uses a fan to power the ice pellets into the high-pressure tank, and the internal circulation air duct formed by the insulated chamber, fan and buffer tank effectively prevents the loss of cold air. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; In the diagram: 1. High-pressure pipeline, 2. First tee, 3. First regulating valve, 4. Second regulating valve, 5. Fifth conduit, 6. Insulated chamber, 7. Liquid nitrogen input pipe, 8. Ice inlet, 9. First conduit, 10. Buffer tank, 11. Pellet ice machine, 12. Second conduit, 13. Fan, 14. Third conduit, 15. Mesh cover, 16. Feed port, 17. Pneumatic valve, 18. Inspection port, 19. Vibrator, 20. Chamber door, 21. Exhaust vent, 22. Second tee, 23. Third regulating valve, 24. Jet pipe, 25. Fourth regulating valve, 26. Active pressure relief valve, 27. Fourth conduit, 28. Discharge port, 29. Vibration damping pad, 30. High-pressure tank. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Example 1 like Figure 1 A pressure-driven ice jet generator includes a high-pressure tank 30, an insulated chamber 6, a pellet ice machine 11, a fan 13, a first three-way connector 2, a second three-way connector 22, and a jet pipe 24.

[0017] The outlet of the pellet ice machine 11 is connected to a buffer tank 10. The insulated chamber 6 is equipped with a door 20, a liquid nitrogen input pipe 7, an exhaust port 21, and an ice inlet 8. The ice inlet 8 is located at the top of the insulated chamber 6.

[0018] Ice inlet 8 is connected to buffer tank 10 through first conduit 9. Buffer tank 10 is connected to air outlet of fan 13 through second conduit 12. Air inlet of fan 13 is connected to exhaust outlet 21 through third conduit 14.

[0019] The high-pressure tank 30 is located inside the insulation chamber 6, and the top of the high-pressure tank 30 is provided with a feeding port 16 corresponding to the position of the ice inlet 8. A pneumatic valve 17 is installed on the feeding port 16, and the bottom of the high-pressure tank 30 is provided with a discharge port 28.

[0020] One of the first three-way connectors 2 is connected to the high-pressure pipeline 1, another is connected to the pneumatic valve 17 through the fourth conduit 27, and the third is connected to the second three-way connector 22 through the fifth conduit 5.

[0021] The other two paths of the second three-way connector 22 are connected to the discharge port 28 and the jet pipe 24, respectively.

[0022] Example 2 like Figure 1 This embodiment describes the method of using a pressure-driven ice jet generator as described in Embodiment 1, specifically including the following steps: 1) Connect the liquid nitrogen input pipe 7 to the liquid nitrogen supply pipe. The liquid nitrogen enters the insulation chamber 6 through the liquid nitrogen input pipe 7 and is atomized to cool the inside of the insulation chamber 6. 2) Start the granular ice machine 11 to make ice pellets into the buffer tank 10, and then start the blower 13. The air generated by the blower 13 carries the ice pellets in the buffer tank 10 into the insulation chamber 6. The ice pellets fall from the ice inlet 8 and enter the high pressure tank 30 through the feeding port 16. The air then enters the blower 13 again through the exhaust port 21 to form an internal circulation. After the feeding is completed, turn off the granular ice machine 11 and the blower 13. 3) Open the high-pressure pipeline 1 to supply gas. Part of the high-pressure gas reaches the pneumatic valve 17 through the fourth conduit 27 and drives the pneumatic valve 17 to close the feed port 16. The other part enters the high-pressure tank 30 through the fifth conduit 5 and the feed port 16 to pressurize the tank.

[0023] 4) When performing ice jet operation, turn on the jet pipe 24, and the ice particles will be ejected from the jet pipe 24 under the drive of high-pressure gas.

[0024] In this invention, a high-pressure tank 30 is placed inside an insulated chamber 6, and then liquid nitrogen is introduced. The liquid nitrogen atomization cooling provides a low-temperature cold source to cool the high-pressure tank 30 inside the insulated chamber, forming a low-temperature environment. This avoids the problem of ice particles melting and clumping on the surface inside the high-pressure tank 30, and the distinct ice particles are easy to jet under high pressure.

[0025] The cooling method using liquid nitrogen is fast, and the combination of the insulated chamber 6 to create a low-temperature environment can prevent the loss of cold air. In addition, the door 20 on the insulated chamber 6 can be used for maintenance of the interior of the insulated chamber 6. The ice pellet feeding method uses a fan 13 to provide power to send ice pellets into the high-pressure tank 30. The internal circulation air duct formed by the insulation chamber 6, the fan 13, and the buffer tank 10 effectively prevents the loss of cold air. Insulation materials can also be added to the fan 13, the buffer tank 10, and the pipelines connected to them to further prevent the loss of cold air.

[0026] In addition, during ice jet operation, the present invention can shut off the high-pressure pipeline 1 and use the pressure injected inside the high-pressure tank 30 to drive the ice jet, or it can simultaneously open the high-pressure pipeline 1 to supply pressure. While using the high pressure inside the high-pressure tank 30 to drive the ice, the high-speed air provided by the high-pressure manifold 1 flows from the fifth conduit 5 to the jet pipe 25 to drive the ice particles together, thereby giving the ice particles a higher acceleration and a better jet rust removal effect.

[0027] Example 3 This embodiment is a further optimization based on the above embodiment, specifically: like Figure 1 The insulation chamber 6 is equipped with an active pressure relief valve 26 that communicates with the inner cavity. When excessive liquid nitrogen is injected into the insulation chamber 6, the internal pressure increases and drives the active pressure relief valve 26 to open, thereby reducing the internal pressure of the insulation chamber 6. A thermometer can also be installed on the insulation chamber 6 to indicate the temperature inside the insulation chamber 6, thereby controlling the amount of liquid nitrogen input.

[0028] A mesh cover 15 is connected between the ice inlet 8 and the feeding port 16. The mesh cover 15 guides the falling ice particles and prevents them from spilling out of the feeding port 16.

[0029] Example 4 This embodiment is a further optimization based on the above embodiment, specifically: like Figure 1 The high-pressure tank 30 is equipped with a vibrator 19 on its exterior and a vibration damping pad 29 between the high-pressure tank 30 and the bottom surface of the insulation chamber 6. The vibrator 19 provides vibration to the high-pressure tank 30, which on the one hand facilitates the ice particles to flow downward to the discharge port 28 during jetting, and on the other hand further prevents the ice particles from clumping inside the high-pressure tank 30. The vibration damping pad 29 prevents the vibration from being transmitted to the insulation chamber 6.

[0030] The bottom of the high-pressure tank 30 is conical, which facilitates the ice particles inside the high-pressure tank 30 to fall into the discharge port 28 for jet operation. The upper end of the feed port 16 is designed as a funnel-shaped structure to facilitate the ice particles to fall into the high-pressure tank 30.

[0031] The high-pressure tank 30 is equipped with an inspection port 18, and a blind flange is detachably connected to the inspection port 18 for inspection and maintenance.

[0032] Example 5 This embodiment is a further optimization based on the above embodiment, specifically: like Figure 1 The first regulating valve 3 is installed on the fourth conduit 27 to regulate the flow rate of the pneumatic valve 17. It can also close the pneumatic valve 17 by closing the first regulating valve 3 to reduce the pressure inside the fourth conduit 27.

[0033] The flow rate supplied in the second conduit 12 can be adjusted by the second regulating valve 4 on the fifth conduit 5.

[0034] The third regulating valve 23 and the fourth regulating valve 25 installed on the jet pipe 24 and the discharge port 28 respectively can adjust the flow rate during jet operation.

[0035] This invention is not limited to the embodiments described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this invention, and the changed content still falls within the protection scope of this invention.

Claims

1. A pressure-driven ice jet generator, comprising a high-pressure tank, characterized in that: It also includes an insulated chamber, a pellet ice machine, a fan, a first tee connector, a second tee connector, and a jet pipe; The outlet of the granular ice machine is connected to a buffer tank. The insulated chamber is equipped with a door, a liquid nitrogen input pipe, an exhaust vent, and an ice inlet. The ice inlet is located at the top of the insulated chamber. The ice inlet is connected to the buffer tank via a first conduit, the buffer tank is connected to the air outlet of the fan via a second conduit, and the air inlet of the fan is connected to the exhaust outlet via a third conduit. The buffer tank is located inside the insulation chamber, and the top of the buffer tank is provided with a feeding port that corresponds to the ice inlet position. A pneumatic valve is installed on the feeding port, and the bottom of the buffer tank is provided with a discharge port. One of the first three-way connectors is connected to a high-pressure pipeline, another is connected to a pneumatic valve via a fourth conduit, and the third is connected to a second three-way connector via a fifth conduit. The other two paths of the second three-way connector are connected to the discharge port and the jet pipe, respectively.

2. The pressure-driven ice jet generator according to claim 1, characterized in that: The insulated chamber is equipped with an active pressure relief valve that communicates with the inner cavity.

3. The pressure-driven ice jet generator according to claim 1, characterized in that: The high-pressure tank is equipped with a vibrator on its exterior, and vibration damping pads are provided between the high-pressure tank and the bottom surface of the insulated chamber.

4. The pressure-driven ice jet generator according to claim 1, characterized in that: The bottom of the buffer tank has a conical structure, and the upper end of the feed port has a funnel-shaped structure.

5. The pressure-driven ice jet generator according to claim 1, characterized in that: A mesh cover is connected between the ice inlet and the feed inlet.

6. The pressure-driven ice jet generator according to claim 1, characterized in that: The buffer tank is provided with an inspection port, and a blind flange is detachably connected to the inspection port.

7. The pressure-driven ice jet generator according to claim 1, characterized in that: The fourth conduit, the fifth conduit, the jet pipe, and the discharge port are all equipped with regulating valves.

8. A method of using the pressure-driven ice jet generator according to any one of claims 1 to 7, characterized in that: Includes the following steps: 1) Connect the liquid nitrogen input pipe to the liquid nitrogen supply pipe. The liquid nitrogen enters the insulation chamber through the liquid nitrogen input pipe and is atomized to cool the inside of the insulation chamber. 2) Start the granular ice machine to make ice pellets into the buffer tank, then start the blower. The air generated by the blower carries the ice pellets in the buffer tank into the insulation chamber. The ice pellets fall from the ice inlet and enter the high-pressure tank through the feeding port. The air then enters the blower again through the exhaust port to form an internal circulation. After feeding is completed, turn off the granular ice machine and the blower. 3) Start the high-pressure pipeline to supply gas. Part of the high-pressure gas reaches the pneumatic valve through the fourth conduit and drives the pneumatic valve to close the feed port. The other part enters the high-pressure tank through the fifth conduit and the feed port to pressurize the tank. 4) When performing ice jet operation, turn on the jet tube, and the ice particles will be ejected from the jet tube under the drive of high-pressure gas.

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