High-sealing pressure vessel for special chemical industry

Abstract

The invention relates to the technical field of pressure containers, in particular to a high-sealing special chemical pressure container which comprises a support and further comprises a protective cylinder, a reinforcing ring, a bearing cylinder, a flow guide assembly, a pressure relief cylinder, a pressure relief assembly and a flow uniformizing assembly. The outer wall of the bearing cylinder is connected with the inner wall of the reinforcing ring, the flow guide assembly is connected with the front side of the bearing cylinder, the pressure relief cylinder is connected with the flow guide assembly, the pressure relief assembly is connected to the rear side of the pressure relief cylinder, the flow uniformizing assembly is arranged between the protection cylinder and the bearing cylinder, and a cavity is formed between the protection cylinder and the bearing cylinder. A bearing cavity is formed between the bearing cylinder and the pressure relief cylinder, and an inner cavity of the pressure relief cylinder is a loading cavity; when the pressure in the pressure container is increased, the refrigerant is driven to cover the surface of the pressure container, then a partition is formed on the periphery of chloroform, and the purpose of improving the safety of chloroform transportation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessels, in particular to a high-sealing pressure vessel for special chemical industry. Background Art

[0002] A pressure vessel is a closed container that can withstand the pressure difference between the inside and outside under certain conditions. It is often used to store or transport gases, liquids or other substances. Pressure vessels are often used in the storage and transportation of special chemical products due to their high strength and corrosion resistance.

[0003] The working principle of the pressure vessel is: the internal gas or liquid is kept stable under a certain working pressure through the sealing structure and the pressure-bearing structure, and when the pressure in the pressure-bearing structure reaches a certain value, the pressure is discharged to the pressure relief cylinder through the pressure relief valve to maintain the stability of the pressure vessel. When transporting chloroform, the pressure vessel is easily affected by the temperature, which causes the temperature of the inner cavity of the pressure vessel to rise. Therefore, refrigeration equipment will be installed on the pressure vessel. When some small vehicles are transported, the vehicle engine is used to provide power input for the compressor. Combined with the power demand for fully loaded vehicles when climbing in mountainous areas, it is easy to cause insufficient engine input power. The hot environment in summer can easily cause the chloroform in the tank to not be fully cooled, and the temperature rises to vaporize and increase the pressure, causing the pressure in the pressure vessel to increase. Due to the limited carrying space of small vehicles, it is impossible to carry a pressure relief cylinder, and the pressure vessel cannot be depressurized in time, which causes the pressure in the pressure vessel to continue to rise. When used for a long time, it is easy to cause cracks, punctures and other defects in the pressure vessel, causing the pressure vessel to leak, causing chloroform to spread and affect the life safety of surrounding personnel.

[0004] There are a variety of solutions to the above problems in the prior art. For example, a light crude oil railway tank car tank body with publication number CN105438680B improves the strength of the pressure vessel by providing an outer cylinder, ceramic fiber and an inner cylinder, thereby increasing the carrying capacity of chloroform transported under high pressure. However, during vehicle transportation, vehicle vibration is inevitable. In mountainous cities, in order to reduce the impact of slopes on vehicle speed, more speed bumps are laid, which further aggravates the vibration of the vehicle. The pressure vessel is subject to the dual impact of high pressure and vibration, which can cause cracks, punctures and other defects in the pressure vessel. These defects further expand under conditions of increased pressure, causing fatigue cracking of the pressure vessel, and then causing leakage in the pressure vessel.

[0005] Therefore, a high-sealing pressure vessel for special chemical industry is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a high-sealing pressure container for special chemical industry, which solves the problem that when transporting chloroform, the pressure in the pressure container is increased, resulting in damage to the pressure container, and chloroform leakage affects the personal safety of surrounding personnel. When the pressure in the pressure container is increased, the refrigerant is driven to cover the surface of the pressure container, thereby forming a partition outside the chloroform, thereby achieving the purpose of improving the safety of chloroform transportation.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] When transporting chloroform, since chloroform is toxic and cannot be directly leaked, a pressure relief tank is required to carry it. The vaporized chloroform expands in a large volume, resulting in a large pressure relief tank, which can easily affect the vehicle's carrying capacity of the pressure vessel. If the pressure relief tank is not installed, it can easily lead to overpressure in the pressure vessel, causing the pressure vessel to leak, leading to the spread of chloroform and affecting the lives of people around it.

[0009] A high-sealing special chemical pressure vessel comprises a bracket, a protective tube, a reinforcement ring, a bearing tube, a flow guide assembly, a pressure relief tube, a pressure relief assembly and a flow equalizing assembly, wherein the protective tube is connected to the bracket, the outer wall of the reinforcement ring is connected to the inner wall of the protective tube, the outer wall of the bearing tube is connected to the inner wall of the reinforcement ring, the flow guide assembly is connected to the front side of the bearing tube, the pressure relief tube is connected to the flow guide assembly, and the pressure relief assembly is connected to the rear side of the pressure relief tube. The flow equalizing assembly is arranged between the protective tube and the bearing tube, a cavity is formed between the protective tube and the bearing tube, a bearing cavity is formed between the bearing tube and the pressure relief tube, the inner cavity of the pressure relief tube is a loading cavity, when the pressure in the loading cavity reaches a specified value, the pressure relief assembly guides the medium in the loading cavity into the loading cavity, when the pressure in the loading cavity increases, the flow guide assembly enables the loading cavity to output refrigerant to the cavity in a unidirectional manner, and the refrigerant flows in a spiral shape on the outer wall of the bearing tube under the action of the flow equalizing assembly and covers the outer wall of the bearing tube.

[0010] Through the above scheme, the medium is introduced into the loading chamber when the pressure of the bearing chamber is increased, so as to maintain the pressure of the bearing chamber stable, thereby ensuring the stability of the bearing tube. At the same time, the pressure increase of the loading chamber causes the refrigerant in the loading chamber to flow into the cavity. Under the action of the uniform flow component, the refrigerant spirally flows along the inner wall of the bearing tube, effectively realizing the cooling of the bearing tube, which will facilitate the stabilization of the pressure in the bearing chamber.

[0011] Preferably, the pressure relief assembly includes a pressure relief part and a swing flap, the pressure relief part is connected to the rear side of the pressure relief cylinder, the swing flap is connected to the inner cavity of the pressure relief cylinder, the swing flap divides the loading cavity into a storage cavity and a pressure relief cavity in front and back, the storage cavity and the pressure relief cavity are inversely proportional in size, and the swing flap is made of polytetrafluoroethylene rubber.

[0012] Through the above scheme, the medium in the bearing chamber can be discharged into the pressure relief chamber, thereby maintaining the stability of the bearing chamber. At the same time, the swing flap is made of polytetrafluoroethylene rubber, which can be deformed and will not react with chloroform. At the same time, polytetrafluoroethylene rubber has a low temperature resistance and is convenient for contact with the refrigerant. The size of the storage chamber and the pressure relief chamber are inversely proportional. When the pressure in the pressure relief chamber increases, the refrigerant can be squeezed into the cavity to achieve cooling of the bearing cylinder.

[0013] Preferably, the pressure relief component includes a casing, an air inlet, a chamber, an air outlet, a spring and a valve plate, the casing is connected to the rear side of the pressure relief cylinder, the air inlet, the chamber and the air outlet are opened on the casing from back to front, the diameter of the chamber is larger than the diameters of the air inlet and the air outlet, the front end of the spring is connected to the front end of the chamber, and the valve plate is connected to the rear end of the spring.

[0014] Through the above scheme, the shell connects the load-bearing chamber with the pressure relief chamber, and pushes the valve plate through the spring to close the air inlet, so that when the pressure in the load-bearing chamber reaches a specified value, the load-bearing chamber is connected with the pressure relief chamber, so that the medium in the load-bearing chamber flows into the pressure relief chamber to squeeze the swing flap, thereby driving the flow of the refrigerant.

[0015] Preferably, the flow guide assembly includes a supporting sleeve, a flow groove, a sliding groove, a push spring, a valve block and a flow limiting plate, the supporting sleeve is connected to the front side of the pressure relief cylinder, the flow groove runs through the supporting sleeve, the sliding groove is opened in the supporting sleeve and is located on the flow groove, the upper end of the push spring is connected to the sliding groove, the valve block is connected to the lower end of the push spring, the lower side of the flow groove is connected to the flow limiting plate, and the rear side of the lower end face of the valve block is inclined.

[0016] Through the above scheme, the rear side of the lower end face of the valve block is inclined, so when the refrigerant applies pressure to the rear end face of the valve block, the force-bearing area of ​​the valve block is larger, which makes it easier to lift the valve block and realize the flow of refrigerant in the supporting sleeve.

[0017] Preferably, the gap between the flow limiting plate and the upper end of the circulation slot gradually decreases from back to front, and the rear end opening of the circulation slot is stepped.

[0018] Through the above scheme, the gap between the flow limiting plate and the upper end of the circulation groove gradually decreases from back to front, thereby increasing the flow rate of the refrigerant outflow, and the rear end opening of the circulation groove is stepped, thereby improving the flow characteristics of the refrigerant and reducing turbulence during liquid flow.

[0019] Preferably, the flow uniforming component includes a nozzle, a slot, a baffle and a guide plate. The nozzle is connected to the front end of the supporting sleeve. A slot is opened inside the nozzle, and the slot is connected to the circulation groove. A baffle is arranged in the middle of the front end of the slot. The guide plate is connected to the outer wall of the supporting tube. The baffle is triangular in shape, and the smaller end of the baffle faces the circulation groove. There are two guide plates, and the slot is arc-shaped.

[0020] Through the above scheme, the baffle is triangular in shape. When the refrigerant flows, the refrigerant can be diverted so that it flows into two guide plates respectively. At the same time, the triangular baffle reduces the gap of the slot, thereby accelerating the flow rate of the refrigerant. The slot is arc-shaped, so that the refrigerant can flow along the guide plate.

[0021] Preferably, the inner wall of the guide plate is spirally wound around the outer wall of the bearing tube, the outer wall of the guide plate is connected to the protective tube, and the two guide plates are in reverse spiral shapes.

[0022] Through the above scheme, the guide plate can not only connect the bearing tube and the protective tube, but also the guide plate is distributed in a spiral shape, which effectively extends the path of the guide plate on the surface of the bearing tube, thereby improving the cooling effect of the refrigerant on the bearing tube.

[0023] Preferably, the wall thickness of the pressure relief cylinder is smaller than the wall thickness of the bearing cylinder, and the wall thickness of the protective cylinder is smaller than the wall thickness of the pressure relief cylinder.

[0024] Through the above scheme, the wall thickness values ​​of the load-bearing cylinder, the pressure relief cylinder and the protective cylinder are reduced in sequence, so that the load-bearing cylinder, the pressure relief cylinder and the protective cylinder can withstand different pressures. When the pressure relief component cannot release pressure in time due to the rapid expansion of chloroform in the load-bearing cylinder, the pressure relief cylinder can be flattened to provide space for the chloroform to expand.

[0025] Preferably, the reinforcement ring is arranged at the annular weld of the bearing tube, the longitudinal cross-section of the reinforcement ring is I-shaped, and a guide groove is opened on the side of the reinforcement ring.

[0026] Through the above scheme, the longitudinal cross-section of the reinforcement ring is I-shaped, which effectively improves the supporting strength of the reinforcement ring. At the same time, the I-shaped structure of the reinforcement ring increases the surface area of ​​the reinforcement ring, so that the reinforcement ring can effectively contact the refrigerant, thereby reducing the temperature of the reinforcement ring. The temperature is transferred to the annular weld of the support tube through the reinforcement ring, thereby improving the stability of the support tube. At the same time, the reinforcement ring fits the weld, reducing the possibility of air leakage at the weld.

[0027] Preferably, the volume of the loading chamber is greater than the volume of the cavity, and pressure relief valves are connected to the upper sides of the left and right ends of the protective tube, so that when the refrigerant leaks quickly, the cavity can be overloaded and the refrigerant can be discharged by the pressure relief valve.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention solves the problem that when transporting chloroform, the pressure vessel is damaged due to the increase in pressure inside the pressure vessel, and the leakage of chloroform affects the personal safety of surrounding personnel. By arranging a pressure relief cylinder, when the pressure in the bearing chamber increases, the chloroform is introduced into the pressure relief chamber through the pressure relief component, so that the pressure in the pressure relief chamber is increased. The increased pressure in the pressure relief chamber presses the refrigerant into the flow-uniform component through the flow guide component. Under the action of the flow-uniform component, the refrigerant covers the bearing cylinder, realizes the cooling of the bearing cylinder, and effectively ensures the stability of the bearing cylinder. At the same time, the refrigerant wraps the bearing cylinder, so that when chloroform leaks out of the bearing cylinder, the refrigerant can form a buffer layer, thereby achieving the purpose of improving the safety of chloroform transportation.

[0030] 2. By setting up the guide component, when the refrigerant is under pressure and applies pressure to the valve block, the valve block moves upward, and the refrigerant flows in the flow groove. Since the gap between the limiting plate and the top of the flow groove gradually decreases, the refrigerant is accelerated to discharge from the slot, thereby increasing the flow speed of the refrigerant, thereby facilitating the diffusion of the refrigerant on the surface of the carrier tube, thereby effectively ensuring the stability of the carrier tube. At the same time, a baffle is set at the slot to divert the refrigerant in the middle of the cavity, and the refrigerant is diffused from the middle of the cavity to both sides through the guide plate, thereby further accelerating the covering speed of the refrigerant on the surface of the carrier tube, thereby effectively ensuring the stability of the carrier tube, and achieving the purpose of improving the safety of transporting chloroform.

[0031] 3. By setting a pressure relief cylinder, the wall thickness of the pressure relief cylinder is smaller than the wall thickness of the bearing cylinder, so that the pressure that the pressure relief cylinder can withstand is smaller than the pressure that the bearing cylinder can withstand. When the pressure in the bearing cavity increases rapidly, the pressure relief cylinder will collapse rapidly first, and the collapsed pressure relief cylinder will squeeze the refrigerant into the cavity. On the one hand, the refrigerant cools down the bearing cylinder, which effectively ensures the stability of the bearing cylinder. At the same time, the refrigerant is overloaded in the cavity, and then the refrigerant is discharged through the pressure relief valve, thereby providing a warning to the personnel. On the other hand, the bearing cavity can be given pressure relief space, which effectively reduces the pressure in the bearing cylinder, thereby achieving the purpose of improving the stability of the bearing cylinder and improving the safety of transporting chloroform. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the pressure relief component part of the present invention;

[0034] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0035] Figure 4 It is a structural schematic diagram of the flow guide component part of the present invention;

[0036] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0037] Figure 6 It is a structural schematic diagram of the flow-uniform component part of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the reinforcing ring part of the present invention;

[0039] Figure 8 It is a schematic diagram of the flow direction when the bearing cavity of the present invention is pressurized.

[0040] In the figure: 1, bracket; 2, protective tube; 3, reinforcement ring; 301, guide groove; 4, bearing tube; 5, guide assembly; 501, support sleeve; 502, flow groove; 503, sliding groove; 504, push spring; 505, valve block; 506, flow limiting plate; 6, pressure relief tube; 7, pressure relief assembly; 701, pressure relief part; 7011, casing; 7012, air inlet; 7013, chamber; 70 14. Air outlet; 7015. Spring; 7016. Valve plate; 702. Swing flap; 8. Flow uniformizing assembly; 801. Nozzle; 802. Notch; 803. Baffle; 804. Guide plate; 9. Cavity; 10. Loading cavity; 11. Loading cavity; 1101. Storage cavity; 1102. Pressure relief cavity; 12. Pressure relief valve; 13. Discharge valve; 14. Discharge valve; 15. Export valve; 16. Import valve. DETAILED DESCRIPTION

[0041] The following is a clear and complete description of the technical solution of the embodiment of the present invention in conjunction with the drawings of the embodiment of the present invention, so that its working state and structural features are more detailed. Obviously, the described embodiment is only a partial embodiment of the present invention, not a complete embodiment. Based on the embodiment of the present invention, other embodiments obtained by ordinary technicians in this field without making any creativity belong to the protection scope of the present invention.

[0042] See also Figures 1 to 8 The present invention provides a high-sealing special chemical pressure vessel, and the technical solution is as follows:

[0043] For details, please refer to Figures 1 to 8A high-sealing special chemical pressure vessel comprises a bracket 1, a protective tube 2, a reinforcement ring 3, a bearing tube 4, a flow guide assembly 5, a pressure relief tube 6, a pressure relief assembly 7 and a flow equalizing assembly 8. The protective tube 2 is connected to the bracket 1, and the bracket 1 is used to maintain the stability of the protective tube 2. The bracket 1 and the protective tube 2 are welded. The protective tube 2 can be made by splicing multiple arc-shaped metal sheets. The outer wall of the reinforcement ring 3 is connected to the inner wall of the protective tube 2, and the outer wall of the bearing tube 4 is connected to the inner wall of the reinforcement ring 3. The bearing tube 4 and the reinforcement ring 3 are welded. The bearing tube 4 is divided into a main body in the middle and split parts on the left and right sides. The main body is made by winding a whole piece of metal plate, and the split part is a whole piece of metal plate. The split part is connected to the main body by welding, and the flow guide assembly 5 is connected to the front side of the bearing tube 4, and the pressure relief tube 6 is connected to the flow guide assembly 5. The pressure relief component 7 is connected to the rear side of the pressure relief cylinder 6, and the flow equalizing component 8 is arranged between the protective cylinder 2 and the bearing cylinder 4. A cavity 9 is formed between the protective cylinder 2 and the bearing cylinder 4, and a bearing cavity 10 is formed between the bearing cylinder 4 and the pressure relief cylinder 6. The inner cavity of the pressure relief cylinder 6 is a loading cavity 11. When the pressure in the loading cavity 10 reaches a specified value, the pressure relief component 7 guides the medium in the loading cavity 10 into the loading cavity 11. When the pressure in the loading cavity 11 increases, the flow guide component 5 causes the loading cavity 11 to output the refrigerant to the cavity 9 in a unidirectional manner. Under the action of the flow equalizing component 8, the refrigerant flows in a spiral shape on the outer wall of the bearing cylinder 4 and covers the outer wall of the bearing cylinder 4. The left end of the bearing cylinder 4 is connected with a discharge valve 13 and an inlet valve 14. Through the discharge valve 13 and the inlet valve 14, the injection and outlet of chloroform can be realized. The left end of the pressure relief cylinder 6 is connected with an outlet valve 15 and an inlet valve 16.

[0044] By providing the protective tube 2, the carrying tube 4 is arranged in the protective tube 2, and then the carrying tube 4 can be protected by the protective tube 2, which effectively reduces the bumping of the carrying tube 4 during transportation, and the pressure relief tube 6 is arranged in the carrying tube 4. On the one hand, when chloroform is filled in the carrying tube 4, the pressure relief tube 6 is wrapped by chloroform, which can reduce the vibration transmission to the pressure relief tube 6, thereby ensuring the stability of the installation of the carrying tube 4 and the pressure relief tube 6. On the other hand, when the pressure in the carrying cavity 10 increases, the chloroform in the carrying cavity 10 will pressurize the carrying tube 4 and the pressure relief tube 6, thereby avoiding the chloroform expansion pressure from being unidirectionally directed toward the carrying tube 4, reducing the pressure on the carrying tube 4, and achieving the purpose of maintaining pressure balance.

[0045] It should be noted here that the refrigerant can be a low-temperature liquid such as liquid nitrogen, and it will not react with chloroform. The refrigerant is non-toxic to the human body. When the refrigerant is not completely used up, it can be replenished by filling.

[0046] As an embodiment of the present invention, refer to Figure 2 , Figure 3 and Figure 8The pressure relief assembly 7 includes a pressure relief member 701 and a swing flap 702. The pressure relief member 701 is connected to the rear side of the pressure relief cylinder 6. The swing flap 702 is connected to the inner cavity of the pressure relief cylinder 6. The edge of the swing flap 702 is fixedly connected to the pressure relief cylinder 6, and the edge of the swing flap 702 is connected to the axial surface of the pressure relief cylinder 6. The swing flap 702 divides the loading chamber 11 into a storage chamber 1101 and a pressure relief chamber 1102 in a front-to-back manner. The pressure relief chamber 1102 is used to store objects discharged from the loading chamber 10, and the storage chamber 1101 is used to store refrigerant. The storage chamber 1101 The storage chamber 1101 is connected to the guide assembly 5. The swing flap 702 is made of polytetrafluoroethylene rubber (polytetrafluoroethylene rubber refers to a low-temperature resistant composite material made by combining polytetrafluoroethylene and a rubber matrix), so that it can be used stably in a cold environment and can be in contact with liquid nitrogen. The polytetrafluoroethylene rubber can remain stable when in contact with chloroform. The pressure relief member 701 includes a casing 7011, an air inlet 7012, a chamber 7013, an air outlet 7014, and a spring 70 15 and valve plate 7016, the casing 7011 is connected to the rear side of the pressure relief cylinder 6, one end of the casing 7011 is connected to the pressure relief chamber 1102, and the other end of the casing 7011 is located in the bearing chamber 10, the air inlet 7012, the chamber 7013 and the air outlet 7014 are opened on the casing 7011 from back to front, and the bearing chamber 10 can be connected to the pressure relief chamber 1102 through the air inlet 7012, the chamber 7013 and the air outlet 7014, and the diameter of the chamber 7013 is larger than that of the air inlet 7012 and The diameter value of the air outlet 7014, the front end of the spring 7015 is connected to the front end of the chamber 7013, the valve plate 7016 is connected to the rear end of the spring 7015, and the spring 7015 pushes the valve plate 7016 to fit the rear end of the chamber 7013 in the initial state, thereby closing the chamber 7013, the export valve 15 is connected to the pressure relief chamber 1102, the export valve 15 is used to export the chloroform in the pressure relief chamber 1102, the import valve 16 is connected to the storage chamber 1101, and the import valve 16 is used to import the refrigerant into the storage chamber 1101.

[0047] By setting the pressure relief component 7, the pressure relief chamber 1102 is connected to the pressure relief component 7. When the pressure in the bearing chamber 10 reaches a specified value, the valve plate 7016 is compressed to push the spring 7015 to contract, and the shell 7011 connects the bearing chamber 10 with the pressure relief chamber 1102 in one direction, so that the generated medium in the bearing chamber 10 flows into the pressure relief chamber 1102, so that the volume of the pressure relief chamber 1102 increases. Since the size of the pressure relief chamber 1102 is inversely proportional to the size of the storage chamber 1101, the storage chamber 1101 is squeezed at this time to reduce the volume. The storage chamber 1101 discharges the refrigerant into the cavity 9 through the guide component 5. The refrigerant cools down the bearing tube 4 under the action of the guide component 5, so as to maintain the pressure in the inner cavity of the bearing tube 4.

[0048] As an embodiment of the present invention, refer to Figure 4 , Figure 5 and Figure 8 The flow guide assembly 5 includes a support sleeve 501, a flow groove 502, a sliding groove 503, a push spring 504, a valve block 505 and a flow limiting plate 506. The support sleeve 501 is connected to the front side of the pressure relief cylinder 6. The rear end of the support sleeve 501 is welded to the pressure relief cylinder 6, and the front end of the support sleeve 501 is welded to the bearing cylinder 4. The flow groove 502 runs through the support sleeve 501, and the flow groove 502 connects the storage cavity 1101 and the cavity 9. The sliding groove 503 is opened in the support sleeve 501 and is located on the flow groove 502. The upper end of the push spring 504 is connected to the sliding groove 503. The valve block 505 is connected to the lower end of the push spring 504, and the valve block 505 is slidably connected to the sliding groove 503. In the initial state, the push spring 504 pushes the valve block 505 to move downward to separate the storage cavity 1101 from the cavity 9. The lower side of the circulation groove 502 is connected to the limiting plate 506. The rear side of the lower end face of the valve block 505 is inclined. The gap between the limiting plate 506 and the upper end of the circulation groove 502 gradually decreases from the back to the front, so that when the refrigerant flows in the circulation groove 502, the circulation speed of the refrigerant can be accelerated. The rear end opening of the circulation groove 502 is stepped, so that the outflow of the refrigerant can be stabilized.

[0049] By setting the guide component 5, when the volume of the pressure relief chamber 1102 increases, the volume of the storage chamber 1101 decreases. At this time, the refrigerant storage space is reduced, and the refrigerant squeezes the valve block 505, causing the push spring 504 to contract, and the rear side of the lower end face of the valve block 505 is inclined, which makes it easier for the valve block 505 to move upward. When the refrigerant flows in the circulation groove 502, it is affected by the flow limiting plate 506, and the movable space of the refrigerant is reduced, thereby accelerating the discharge of the refrigerant, and the refrigerant is accelerated to the uniform flow component 8.

[0050] As an embodiment of the present invention, refer to Figure 6 , Figure 7 and Figure 8The uniform flow component 8 includes a nozzle 801, a notch 802, a baffle 803 and a guide plate 804. The nozzle 801 is connected to the front end of the support sleeve 501. The nozzle 801 is fixedly connected to the support sleeve 501. A notch 802 is provided inside the nozzle 801. The notch 802 is connected to the flow groove 502. A baffle 803 is provided in the middle of the front end of the notch 802. The baffle 803 divides the opening of the notch 802 into two parts, and then the refrigerant is divided into two parts when discharged. The guide plate 804 is connected to the outer wall of the bearing tube 4. The baffle 803 is triangular in shape, and the smaller end of the baffle 803 faces the flow groove 502. Then, the notch 802 is from the back to the The space available for the flow of refrigerant in front is gradually reduced, thereby accelerating the flow speed of the refrigerant. The number of the guide plates 804 is two, and the slot 802 is arc-shaped. The slot 802 is arc-shaped, and when the refrigerant flows out quickly, it is affected by the arc-shaped flow channel and flows upward. The inner wall of the guide plate 804 is spirally wound around the outer wall of the bearing tube 4, and the outer wall of the guide plate 804 is connected to the protective tube 2. Therefore, the guide plate 804 plays a supporting role between the protective tube 2 and the bearing tube 4. At the same time, since the guide plate 804 is arranged in a spiral shape, the connection area with the bearing tube 4 and the protective tube 2 is large, and the supporting effect is good. On the other hand, the guide plate 804 can guide the flow of the refrigerant, and The spirally arranged guide plate 804 makes the flow area of ​​the refrigerant on the surface of the bearing tube 4 larger, effectively improving the cooling effect on the bearing tube 4, thereby maintaining the stability of the bearing cavity 10. The two guide plates 804 are in reverse spirals, and the reverse spirals of the two guide plates 804 form two flow channels, which correspond to the two openings of the notch 802. The wall thickness of the pressure relief tube 6 is less than the wall thickness of the bearing tube 4, so the rubber and the bearing tube 4, the pressure relief tube 6 are more likely to shrink and collapse. When the pressure relief component 7 cannot relieve pressure in time when chloroform expands rapidly, the pressure relief tube 6 collapses and shrinks, thereby providing space for chloroform to expand. The wall thickness of the protective tube 2 is less than that of the pressure relief tube 6. The wall thickness value, the reinforcement ring 3 is arranged at the annular weld of the bearing tube 4, thereby improving the structural strength of the bearing tube 4, the longitudinal section of the reinforcement ring 3 is I-shaped, and the I-shaped structure has good strength, thereby effectively improving the stability of the weld of the bearing tube 4, and the side of the reinforcement ring 3 is provided with a guide groove 301, through which the refrigerant can flow to the two sides of the bearing tube 4, so that the two sides of the bearing tube 4 are cooled, the volume value of the loading chamber 11 is greater than the volume value of the cavity 9, so that the cavity 9 will overload all the refrigerant in the loading chamber 11, and the upper sides of the left and right ends of the protective tube 2 are connected with a pressure relief valve 12, and the refrigerant can be discharged through the pressure relief valve 12 after expanding in the cavity 9.

[0051] By setting a uniform flow component 8, when the flow guide component 5 discharges the refrigerant to the slot 802, the baffle 803 set in the slot 802 makes the refrigerant diverted from the middle of the outer surface of the carrier tube 4 into two streams, thereby reducing the flow path of the refrigerant completely covering the surface of the carrier tube 4. By setting a guide plate 804, two guide plates 804 are set, and the two guide plates 804 guide two refrigerants respectively. The guide plates 804 are distributed in a spiral shape, thereby guiding the refrigerant to flow in a spiral shape on the surface of the carrier tube 4. The spiral flow covers a wide surface area of ​​the carrier tube 4, thereby effectively improving the cooling effect of the carrier tube 4. After the refrigerant is vaporized, it is filled in the cavity 9. At this time, if both the carrier tube 4 and the protective tube 2 leak, and the personnel are facing the leakage point, because the refrigerant is located outside the chloroform and the refrigerant is incompatible with chloroform, the refrigerant will be squeezed out first when the chloroform leaks. At this time, the refrigerant with a lower temperature acts on the human body, causing the human body to have a stress reaction for easy avoidance.

[0052] When transporting chloroform, the carrier cylinder 4 will be affected by the air temperature, which will cause the temperature of the inner cavity of the carrier cylinder 4 to rise, and then the stable chloroform will volatilize, resulting in an increase in the pressure in the inner cavity of the carrier cylinder 4. By arranging a pressure relief cylinder 6 in the inner cavity of the carrier cylinder 4 and filling the inner cavity of the pressure relief cylinder 6 with refrigerant, when the pressure in the inner cavity of the carrier cylinder 4 increases, part of the chloroform is introduced into the pressure relief cylinder 6 through the pressure relief component 7. The chloroform squeezes and compresses the space in the inner cavity of the pressure relief cylinder 6, and then the refrigerant in the pressure relief cylinder 6 is squeezed out through the flow guide component 5. The extruded refrigerant flows on the surface of the carrier cylinder 4 through the uniform flow component 8, thereby achieving pressure relief and cooling of the carrier cylinder 4, thereby maintaining the stability of the pressure relief cylinder 6.

[0053] Before transporting chloroform, in order to stably store chloroform, a protective cylinder 2 and a carrying cylinder 4 are provided. The carrying cylinder 4 is loaded with chloroform, and the protective cylinder 2 covers the outer periphery of the carrying cylinder 4 to protect the carrying cylinder 4, thereby preventing the carrying cylinder 4 from being hit during transportation and affecting the stability of the chloroform. At the same time, the protective cylinder 2 and the carrying cylinder 4 form a cavity 9 to reduce heat transfer.

[0054] When filling chloroform, chloroform is introduced into the bearing chamber 10 through the discharge valve 14, and the chloroform is submerged in the pressure relief cylinder 6. Then, the chloroform generates buoyancy on the pressure relief cylinder 6 to reduce the support strength of the pressure relief cylinder 6. After the chloroform is filled, the refrigerant is filled into the storage chamber 1101 through the introduction valve 16. The refrigerant squeezes the swing flap 702, so that the volume of the storage chamber 1101 increases and the volume of the pressure relief chamber 1102 decreases. The objects in the pressure relief chamber 1102 are discharged through the outlet valve 15.

[0055] When transporting chloroform, the temperature of the carrier tube 4 will rise due to the increase in air temperature, causing the chloroform to volatilize, and then the pressure in the carrier tube 4 will increase. At this time, the carrier tube 4 needs to be depressurized. By setting the pressure relief component 7, when the pressure in the inner cavity of the carrier tube 4 reaches a specified value, the chloroform is introduced into the pressure relief tube 6 to achieve pressure relief. Specifically, the pressure acts on the valve plate 7016, and the spring 7015 pushes the valve plate 7016 to close the air inlet 7012. When the pressure in the bearing cavity 10 reaches a specified level, the pressure forces the spring 7015 to contract. At this time, the chloroform flows along the air inlet 7012, the chamber 7013 and the air outlet 7014 to the pressure relief cavity 1102, thereby completing the pressure relief. At this time, the swing flap 702 is squeezed by the chloroform and deformed, and the volume of the pressure relief cavity 1102 increases while the volume of the storage cavity 1101 decreases.

[0056] In order to avoid further expansion of chloroform, it is necessary to make the refrigerant flow on the surface of the carrier tube 4 to cool the carrier tube 4, so as to stabilize the chloroform; specifically, the refrigerant is filled in the storage chamber 1101, and when the chloroform is depressurized into the pressure relief chamber 1102, the volume of the storage chamber 1101 is reduced, thereby squeezing the refrigerant, and the refrigerant generates pressure on the valve block 505, causing the push spring 504 to contract, and the refrigerant flows along the flow groove 502. Under the action of the flow limiting plate 506, the refrigerant flow rate is accelerated. When the refrigerant flows into the slot 802, since the slot 802 is arranged in an arc shape, when the slot 802 discharges the refrigerant, it is discharged upward. After the refrigerant is discharged, it will flow in a spiral shape on the surface of the carrier tube 4 along the guide plate 804, thereby cooling the carrier tube 4. As the refrigerant is discharged, the refrigerant pressure on the valve block 505 is reduced, and the push spring 504 pushes the valve block 505 to move downward to close the flow groove 502.

[0057] In order to speed up the flow speed of the refrigerant on the surface of the carrier tube 4 and improve the cooling efficiency of the carrier tube 4, the refrigerant is diffused from the middle of the outer surface of the carrier tube 4 to both sides, thereby shortening the flow path of the refrigerant compared to the unidirectional flow of the refrigerant. Specifically, a baffle 803 is provided at the notch 802 to split the refrigerant into two streams. Two guide plates 804 are provided to allow the two refrigerants to flow spirally along the two guide plates 804, respectively. Since the notch 802 is located in the middle of the carrier tube 4, the two refrigerants flow spirally toward both ends along the guide plates 804, and the flow path is shorter.

[0058] When chloroform is affected by external factors and expands rapidly, the pressure relief valve 12 cannot release pressure in time, which may easily cause the support tube 4 to be damaged and chloroform to leak, affecting the safety of people around. By making the wall thickness of the pressure relief tube 6 smaller than that of the support tube 4, the pressure relief tube 6 will collapse before the support tube 4 is damaged. The collapsed pressure relief tube 6 quickly squeezes the refrigerant into the cavity 9 through the guide assembly 5, and quickly discharges it to both ends of the support tube 4 along the guide plate. In addition, since the volume value of the loading cavity 11 is greater than the volume value of the cavity 9, the cavity 9 is over-pressurized, and the refrigerant is discharged along the pressure relief valve 12. Since the temperature of the refrigerant is relatively low, an obvious white mist is formed, thereby achieving the purpose of the alarm.

[0059] During unloading, all the chloroform can be discharged by connecting the discharge valve 13 and the outlet valve 15.

[0060] Although the embodiments of the present invention have been described, it will be apparent to those skilled in the art that changes and modifications may be made to the embodiments to obtain other effects with an understanding of the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-sealing special chemical pressure vessel, comprising a support (1), characterized in that: It also comprises a protective tube (2), a reinforcement ring (3), a bearing tube (4), a flow guide assembly (5), a pressure relief tube (6), a pressure relief assembly (7) and a flow equalizing assembly (8), wherein the protective tube (2) is connected to the bracket (1), the outer wall of the reinforcement ring (3) is connected to the inner wall of the protective tube (2), the outer wall of the bearing tube (4) is connected to the inner wall of the reinforcement ring (3), the flow guide assembly (5) is connected to the front side of the bearing tube (4), the pressure relief tube (6) is connected to the flow guide assembly (5), the pressure relief assembly (7) is connected to the rear side of the pressure relief tube (6), and the flow equalizing assembly (8) is arranged on the protective tube (2) and the bearing tube (4). A cavity (9) is formed between the protective tube (2) and the bearing tube (4), and a bearing cavity (10) is formed between the bearing tube (4) and the pressure relief tube (6). The inner cavity of the pressure relief tube (6) is a loading cavity (11). When the pressure in the loading cavity (10) reaches a specified value, the pressure relief component (7) guides the medium in the loading cavity (10) into the loading cavity (11). When the pressure in the loading cavity (11) increases, the flow guide component (5) causes the loading cavity (11) to output the refrigerant in a unidirectional manner to the cavity (9). Under the action of the uniform flow component (8), the refrigerant flows in a spiral shape along the outer wall of the bearing tube (4) and covers the outer wall of the bearing tube (4).

2. A high-sealing special chemical pressure vessel according to claim 1, characterized in that: The pressure relief assembly (7) comprises a pressure relief component (701) and a swing flap (702); the pressure relief component (701) is connected to the rear side of the pressure relief cylinder (6); the swing flap (702) is connected to the inner cavity of the pressure relief cylinder (6); the swing flap (702) divides the loading cavity (11) into a storage cavity (1101) and a pressure relief cavity (1102) in a front-to-back direction; the storage cavity (1101) and the pressure relief cavity (1102) are inversely proportional in size; and the swing flap (702) is made of polytetrafluoroethylene rubber.

3. A high-sealing special chemical pressure vessel according to claim 2, characterized in that: The pressure relief component (701) comprises a casing (7011), an air inlet (7012), a chamber (7013), an air outlet (7014), a spring (7015) and a valve plate (7016); the casing (7011) is connected to the rear side of the pressure relief cylinder (6); the air inlet (7012), the chamber (7013) and the air outlet (7014) are arranged on the casing (7011) from the back to the front; the diameter of the chamber (7013) is greater than the diameters of the air inlet (7012) and the air outlet (7014); the front end of the spring (7015) is connected to the front end of the chamber (7013); and the valve plate (7016) is connected to the rear end of the spring (7015).

4. A high-sealing special chemical pressure vessel according to claim 2, characterized in that: The flow guide assembly (5) comprises a support sleeve (501), a circulation groove (502), a sliding groove (503), a push spring (504), a valve block (505) and a flow limiting plate (506); the support sleeve (501) is connected to the front side of the pressure relief cylinder (6); the circulation groove (502) penetrates the support sleeve (501); the sliding groove (503) is arranged in the support sleeve (501) and is located on the circulation groove (502); the upper end of the push spring (504) is connected to the sliding groove (503); the valve block (505) is connected to the lower end of the push spring (504); the lower side of the circulation groove (502) is connected to the flow limiting plate (506); and the rear side of the lower end surface of the valve block (505) is inclined.

5. A high-sealing special chemical pressure vessel according to claim 4, characterized in that: The gap between the flow limiting plate (506) and the upper end of the circulation slot (502) gradually decreases from the back to the front, and the rear end opening of the circulation slot (502) is in a stepped shape.

6. A high-sealing special chemical pressure vessel according to claim 5, characterized in that: The flow-uniform component (8) comprises a nozzle (801), a notch (802), a baffle (803) and a guide plate (804); the nozzle (801) is connected to the front end of the support sleeve (501); a notch (802) is provided inside the nozzle (801); the notch (802) is communicated with the circulation groove (502); a baffle (803) is provided in the middle of the front end of the notch (802); the guide plate (804) is connected to the outer wall of the bearing tube (4); the baffle (803) is triangular in shape; the smaller end of the baffle (803) faces the circulation groove (502); there are two guide plates (804); and the notch (802) is arc-shaped.

7. A high-sealing special chemical pressure vessel according to claim 6, characterized in that: The inner wall of the guide plate (804) is spirally wound around the outer wall of the bearing tube (4), the outer wall of the guide plate (804) is connected to the protective tube (2), and the two guide plates (804) are in reverse spiral shapes.

8. A high-sealing special chemical pressure vessel according to claim 2, characterized in that: The wall thickness of the pressure relief tube (6) is smaller than the wall thickness of the bearing tube (4), and the wall thickness of the protective tube (2) is smaller than the wall thickness of the pressure relief tube (6).

9. A high-sealing special chemical pressure vessel according to claim 8, characterized in that: The reinforcement ring (3) is arranged at the annular weld of the bearing tube (4); the longitudinal cross section of the reinforcement ring (3) is in an I-shape; and a guide groove (301) is provided on the side of the reinforcement ring (3).

10. A high-sealing special chemical pressure vessel according to claim 9, characterized in that: The volume value of the loading chamber (11) is greater than the volume value of the cavity (9), and the upper sides of the left and right ends of the protective tube (2) are connected to pressure relief valves (12).

Images