A large pressure vessel

Abstract

The present invention discloses a large pressure vessel, in which a lifting device is arranged outside the cylinder, and the lifting device carries maintenance personnel and equipment to the top of the pressure cylinder. A crane is arranged on the head inspection hole, and the crane is connected to a carrying basket by a steel rope. The carrying basket carries maintenance personnel and equipment to enter the pressure vessel to conduct a comprehensive inspection and maintenance of the inner wall of the cylinder to avoid potential safety hazards. The pressure vessel is also provided with an air inlet valve and an air outlet valve for exhausting toxic gases to avoid endangering the health of maintenance personnel. At the same time, a spiral steel pipe is also provided in the pressure vessel for heating the liquid entering the container. An annular slope is also provided at the bottom of the container for optimizing stirring. The present invention is safe and reliable, and has a good market prospect.

Description

Technical Field

[0001] The invention relates to the field of chemical machinery and equipment, and in particular to a large pressure vessel. Background Art

[0002] Pressure vessels are closed equipment that contain gas or liquid and bear a certain pressure. They are widely used in chemical, petroleum, machinery, metallurgy, nuclear energy, aviation, aerospace and other sectors, and are essential core equipment in the production process.

[0003] Pressure vessels are used in harsh conditions. They not only bear pressure loads of varying sizes (usually pulsating loads) and other loads, but also some of them operate under high temperature or deep cold conditions. The working medium is often corrosive, and the working environment is relatively harsh.

[0004] Pressure vessels are prone to overload. The pressure inside the vessel often increases rapidly due to operating errors or abnormal reactions, and the vessel is often ruptured before it is discovered.

[0005] The local stress of pressure vessels is relatively complex. For example, fatigue rupture is often caused by excessive local stress and repeated loading and unloading around the openings of the vessel and other structural discontinuities.

[0006] Pressure vessels often have hidden serious defects. Welded or forged vessels often have serious defects such as tiny cracks during manufacturing. If these defects continue to expand during operation or under appropriate conditions (such as operating temperature, working medium properties, etc.), the container will suddenly rupture.

[0007] Pressure vessels used in large quantities in the chemical industry will always have damage to the enamel layer due to the corrosiveness of the medium, the hot and cold reaction conditions, transportation, use, human factors and other issues, causing unnecessary production stoppages. If a large area of ​​​​falls off, it is recommended to return to the factory for re-enamelling. Pressure vessels are relatively expensive, and there is no need to update the entire equipment when there is minor damage. This requires the use of a suitable repair method, and (Jinsucheng) JS916 is used for immediate repair. Otherwise, the pressure vessel will be corroded by the solvent in the container, and the damage to the enamel surface will expand rapidly, resulting in unpredictable losses such as production stoppages, safety accidents and environmental pollution.

[0008] Therefore, ease of maintenance and the ability to provide a variety of reaction conditions have become technical issues that pressure vessels need to solve. Summary of the invention

[0009] In order to overcome the problems existing in the prior art, the present invention provides a large pressure vessel which is convenient for maintenance and can implement stirring.

[0010] In order to solve the problems existing in the prior art, the present invention discloses a large pressure vessel, including a cylinder, a head, a sealing device, an opening, a hole pipe, a skirt support, and safety accessories. The cylinder is cylindrical, the head is arranged at the top of the cylinder, the opening, the hole pipe, the sealing device and the safety accessories are installed in a matching manner and arranged on the head, the skirt support is arranged at the bottom of the cylinder, and also includes a lifting device and a crane. The lifting device is arranged on the outside of the cylinder, and the lifting device can be lifted to the top of the cylinder. The opening includes an inspection hole, and the crane is erected above the inspection hole. The crane is connected to a carrying basket by a steel rope, and the carrying basket can pass through the inspection hole. The length of the steel rope is the same as the height of the cylinder. A plurality of hook locks are arranged on the inner wall of the cylinder, and the hook locks are arranged equidistantly on the inner wall of the cylinder.

[0011] Furthermore, the number of the inspection holes is three, and the inspection holes are arranged on the edge of the head, and the inspection holes are distributed in a regular triangle on the head.

[0012] Furthermore, the hook lock is arranged at the midpoint of the inner wall of the container body between two adjacent inspection holes, and the hook locks are arranged equidistantly up and down.

[0013] Furthermore, it also includes an air inlet valve and an air outlet valve. The air inlet valve is arranged on the upper part of the side wall of the cylinder, and the air outlet valve is arranged at the other end of the side wall of the cylinder and symmetrical to the air inlet valve. A filtering device is arranged outside the air outlet valve.

[0014] Furthermore, an annular slope is provided at the bottom of the cylinder, a recess is provided at the center of the annular slope, a high-power rotating motor is provided in the recess, a sealing device is provided outside the high-power rotating motor, and a propeller is installed on the top of the rotating motor.

[0015] Furthermore, the opening also includes an inlet hole and an outlet hole. The inlet hole is arranged at the bottom of the cylinder. The inlet hole and the outlet hole are arranged at both ends of the bottom of the cylinder. The inlet hole and the outlet hole pass through the annular slope and are connected to the interior of the pressure vessel. The inlet hole is connected to a water pump outside the cylinder through a connecting pipe, and the outlet hole is connected to a wastewater treatment tank outside the cylinder through a connecting pipe.

[0016] Furthermore, it also includes a spiral hollow steel pipe, a connecting pipe and a heating pipe. The spiral hollow steel pipe is arranged on the inner wall of the cylinder. The connecting pipe and the heating pipe are arranged at the bottom of the spiral hollow pipe. The spiral hollow steel pipe is connected to the water inlet through the connecting pipe. The heating pipe is arranged outside the cylinder. One end of the heating pipe is connected to the water pump, and the other end is connected to the water inlet.

[0017] Furthermore, the material of the cylinder is vanadium-added steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of the invention;

[0019] Figure 2 is a schematic diagram of the structure of the invention;

[0020] Figure 3 It is the top view of the head;

[0021] The meanings of the symbols in the accompanying drawings are as follows:

[0022] 1: Cylinder; 2: Head; 3: Lifting device; 4: Crane; 5: Inspection hole; 6: Steel rope; 7: Carrying basket; 8: Hook lock; 9: Inlet valve; 10: Outlet valve; 11: Annular ramp; 12: High-power rotating motor; 13: Propeller; 14: Water inlet hole; 15: Water outlet hole; 16: Spiral hollow steel pipe; 17: Connecting pipe; 18: Heating pipe. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0024] like Figures 1 to 3 As shown, the lifting device 3 is arranged on the outside of the cylinder 1. The lifting device 3 has a certain load-bearing capacity and can carry maintenance personnel and equipment to the top of the container. Compared with the traditional method of setting a ladder on the outer wall of the cylinder 1, the maintenance personnel climb the ladder and carry the maintenance equipment, which saves a lot of manpower and is also safer and more reliable.

[0025] Three inspection holes 5 are arranged on the head 2, and a crane 4 is set above the three inspection holes 5. The crane 4 is connected to a carrying basket 7 through a steel rope 6, and the carrying basket 7 can pass through the inspection holes 5. The length of the steel rope 6 is the same as the height of the cylinder 1. A plurality of hook locks 8 are arranged on the inner wall of the cylinder 1. The hook locks 8 are arranged at the midpoint of the inner wall of the cylinder 1 between two adjacent inspection holes 5, and the hook locks 8 are arranged equidistantly up and down. The carrying basket 7 carrying maintenance personnel and maintenance equipment enters the interior of the cylinder 1, and the maintenance personnel use tools to hook the hook lock 8 to move the carrying basket 7 suspended in the air along the inner wall of the cylinder 1. The carrying basket 7 lowered from one inspection hole 5 carrying the maintenance personnel and equipment can complete the inspection and maintenance of the 120-degree arc-shaped inner wall of the cylinder 1. The carrying baskets lowered from three inspection holes 5 carrying the maintenance personnel and equipment can complete the 360-degree inspection and maintenance of the inner wall of the cylinder 1. The crane 4 lowers the steel rope and the carrying basket 7, so that the maintenance personnel can complete the inspection and maintenance of the inner wall of the entire cylinder 1. The maintenance personnel can use ultrasonic or X-ray flaw detection equipment to inspect the inner wall of the cylinder 1 and repair the damaged parts.

[0026] Before maintenance personnel enter the pressure vessel, they need to exhaust all the gas in the container. An inlet valve 9 and an outlet valve 10 are provided on the side wall of the cylinder. The inlet valve 9 is provided on the upper part of the side wall of the cylinder 1, and the outlet valve 10 is provided at the other end of the side wall of the cylinder 1 at a position symmetrical to the inlet valve 9. A filtering device is provided outside the outlet valve 10 to filter out toxic gases and minimize environmental pollution. After all the gas in the pressure vessel is exhausted, maintenance personnel can wear protective clothing to enter the pressure vessel.

[0027] An annular slope 11 is arranged at the bottom of the cylinder body, a recessed portion is arranged at the center of the annular slope 11, a high-power rotating motor 12 is arranged in the recessed portion, a sealing device is arranged outside the high-power rotating motor 12, a propeller 13 is installed on the upper portion of the high-power rotating motor 12, and the rotating motor can be turned on to stir the liquid in the pressure container. The design of the annular slope 11 makes the pressure of the liquid concentrated in the recessed portion, so that the stirring of the propeller 13 is more intense, thereby achieving a better stirring effect.

[0028] Pressure vessels need to be tested for water pressure regularly. The process requires that the temperature of the test water should be greater than or equal to 15°C and not higher than 49°C. In winter, the tap water temperature cannot meet the requirements. Water inlet holes 14 and water outlet holes 15 are set at both ends of the bottom of the cylinder. The water inlet holes 14 and the water outlet holes 15 penetrate the annular slope 11 and are connected to the inside of the pressure vessel. The water inlet hole 14 is connected to the water pump outside the cylinder 1 through a connecting pipe, and the water outlet hole 15 is connected to the wastewater treatment tank outside the cylinder 1 through a connecting pipe. A spiral hollow steel pipe 16 is arranged on the inner wall of the cylinder 1, and a connecting pipe 17 and a heating pipe 18 are arranged at the bottom of the spiral hollow steel pipe 16. The spiral hollow steel pipe 16 is connected to the water inlet 14 through the connecting pipe 17. The heating pipe 18 is arranged outside the cylinder 1. One end of the heating pipe 18 is connected to the water pump, and the other end is connected to the water inlet 14. When water is injected, natural gas is burned to heat the heating pipe 18 to implement heating. When the experimental water is injected into the pressure vessel through the spiral hollow steel pipe 16, it has a certain temperature. The heating pipe 18 is continuously heated to make the experimental water meet the requirements. In addition to conducting water pressure tests, the above method can also be used to heat other liquids entering the container.

[0029] The material of the cylinder 1 is vanadium-added steel, which has strong rigidity and corrosion resistance.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A large pressure vessel, comprising a cylinder (1), a head (2), a sealing device, an opening, a pipe for the opening, a skirt support, and safety accessories, wherein the cylinder (1) is cylindrical, the head is arranged on the top of the cylinder, the opening, the pipe for the opening, the sealing device and the safety accessories are installed in a matching manner and arranged on the head (2), and the skirt support is arranged at the bottom of the cylinder (1), characterized in that: It also includes a lifting device (3) and a crane (4), wherein the lifting device (3) is arranged outside the cylinder (1), and the lifting device (3) can be lifted to the top of the cylinder (1), the opening includes an inspection hole (5), the crane (4) is erected above the inspection hole (5), the crane (4) is connected to a carrying basket (7) via a steel rope (6), and the carrying basket (7) can pass through the inspection hole (5), the length of the steel rope (6) is the same as the height of the cylinder (1), and a plurality of hook locks (8) are arranged on the inner wall of the cylinder (1), and the hook locks (8) are arranged at equal distances on the inner wall of the cylinder (1); The number of the inspection holes (5) is three, and the inspection holes (5) are arranged at the edge of the sealing head (2), and the inspection holes (5) are distributed in the form of a regular triangle on the sealing head (2); The hook lock (8) is arranged at the midpoint of the inner wall of the cylinder (1) between two adjacent inspection holes (5), and the hook locks (8) are arranged equidistantly up and down; It also comprises an air inlet valve (9) and an air outlet valve (10), wherein the air inlet valve (9) is arranged at the upper part of the side wall of the cylinder (1), and the air outlet valve (10) is arranged at the other end of the side wall of the cylinder (1) at a position symmetrical to the air inlet valve (9), and a filtering device is arranged outside the air outlet valve (10).

2. A large pressure vessel according to claim 1, characterized in that: An annular slope (11) is provided at the bottom of the cylinder (1), a recess is provided at the center of the annular slope, a high-power rotating motor (12) is provided in the recess, a sealing device is provided outside the high-power rotating motor, and a propeller (13) is installed on the top of the rotating motor.

3. A large pressure vessel according to claim 2, characterized in that: The openings further include a water inlet hole (14) and a water outlet hole (15). The water inlet hole (14) and the water outlet hole (15) are arranged at two ends of the bottom of the cylinder (1). The water inlet hole (14) and the water outlet hole (15) penetrate the annular slope (11) and communicate with the interior of the pressure vessel. The water inlet hole (14) is connected to a water pump outside the cylinder through a connecting pipe, and the water outlet hole (15) is connected to a wastewater treatment pool outside the cylinder through a connecting pipe.

4. A large pressure vessel according to claim 1, characterized in that: The invention also comprises a spiral hollow steel pipe (16), a connecting pipe (17) and a heating pipe (18); the spiral hollow steel pipe (16) is arranged on the inner wall of the cylinder (1); the connecting pipe (17) and the heating pipe (18) are arranged at the bottom of the spiral hollow steel pipe (16); the spiral hollow steel pipe (16) is connected to the water inlet hole (14) via the connecting pipe (17); the heating pipe (18) is arranged outside the cylinder; one end of the heating pipe (18) is connected to a water pump, and the other end is connected to the water inlet hole (14).

5. A large pressure vessel according to claim 1, characterized in that: The material of the cylinder is vanadium-added steel.

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