Pressure container

Abstract

The invention discloses a pressure container, and relates to the technical field of compressed gas storage, the pressure container comprises a tank body, a gas storage cavity used for storing pressure gas is arranged in the tank body, a gas inlet and outlet pipe is arranged on the tank body, and the tank wall of the tank body comprises an outer plastic layer, a middle steel layer and an inner plastic layer which are sequentially arranged from outside to inside; the outer plastic layer and the inner plastic layer of the tank wall can be used as an outer contact surface and an inner contact surface of the tank body, the problems of corrosion and oxidation of the tank body in different environments are prevented by utilizing the characteristics of plastics, and meanwhile, the middle steel layer provides good structural strength for the tank body; in addition, the outer plastic layer and the inner plastic layer can effectively reduce the weight and the cost of the whole pressure container.

Description

Technical Field

[0001] The invention relates to the technical field of compressed gas storage, and in particular to a pressure container. Background Art

[0002] Pressure vessels are containers used to store compressed gases and have been used in many fields. For example, some vehicles are required to have at least one set of pressure vessels to provide assistance for the braking system.

[0003] At present, most of the pressure vessels known to the applicant are made of iron or aluminum. First of all, iron pressure vessels have the problem of rust, especially internal rust. The shedding of rust may affect the normal ventilation of the airway. In addition, although aluminum pressure vessels can avoid the problem of internal rust, there are transportation steps for pressure vessels. When pressure vessels are transported at sea for a long time as export items, the pressure vessels will experience varying degrees of oxidation. Both rust and oxidation problems will affect the service life of the pressure vessels.

[0004] Therefore people are in urgent need of a pressure vessel with long service life. Summary of the invention

[0005] The purpose of the present invention is to provide a pressure vessel to solve the problems existing in the above-mentioned prior art, by changing the tank wall structure of the tank body of the pressure vessel to prevent rust and oxidation, thereby increasing the service life of the pressure vessel.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a pressure vessel, including a tank body, a gas storage chamber for storing pressurized gas is arranged inside the tank body, an air inlet and outlet pipes are arranged on the tank body, and the tank wall of the tank body includes an outer plastic layer, a middle steel layer and an inner plastic layer arranged in sequence from the outside to the inside.

[0007] Preferably, a plurality of the air storage chambers are provided in the tank body, and the plurality of the air storage chambers are respectively connected to the air inlet and outlet pipes.

[0008] Preferably, a mounting rod and a partition are provided in the tank body, a plurality of first strip mounting grooves are provided on the circumference of the mounting rod, a plurality of second strip mounting grooves corresponding to the first strip mounting grooves are provided on the inner circumferential wall of the tank body, two ends of the partition are respectively inserted into the first strip mounting groove and the second strip mounting groove, and the air storage chamber is between adjacent partitions.

[0009] Preferably, the mounting rod is hollow, and the rod wall of the mounting rod comprises an outer plastic layer, a middle steel layer and an inner plastic layer which are sequentially arranged from the outside to the inside.

[0010] Preferably, the partition includes an outer plastic layer, a middle steel layer and an inner plastic layer which are arranged in sequence.

[0011] Preferably, a rotating sleeve is provided for rotational sealing at the axial end of the tank body, the inlet and outlet pipes are threadedly connected to the rotating sleeve, and ventilation holes are provided at the end of the tank body corresponding to the multiple air storage chambers, the aperture of the ventilation holes is not larger than the inner diameter of the inlet and outlet pipes, a sealing ring is provided at one end of the inlet and outlet pipes close to the tank body, and the multiple ventilation holes are located on the rotation path of the inlet and outlet pipes.

[0012] Preferably, a seal is provided between the rotating sleeve and the end of the tank body to prevent the plurality of vents from communicating with each other. The seal is annular and fixed on the rotating sleeve. The seal covers the plurality of vents. The seal is provided with an escape space, and the escape space matches the inlet and outlet air pipes.

[0013] Preferably, the pressure vessel further comprises a first drive motor and a second drive motor, the first drive motor is transmission-connected to the rotating sleeve, and the second drive motor is transmission-connected to the air inlet and outlet pipes.

[0014] Preferably, a pressure monitoring alarm device is provided in each of the plurality of air storage chambers.

[0015] Preferably, the can body comprises a can body and a can cover, and the can cover is detachably connected to the can body.

[0016] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0017] The outer plastic layer and the inner plastic layer of the tank wall can serve as the outer contact surface and the inner contact surface of the tank body, and utilize the characteristics of plastic to prevent the tank body from rusting and oxidizing in different environments. At the same time, the middle steel layer provides good structural strength for the tank body. In addition, the outer plastic layer and the inner plastic layer can effectively reduce the weight and cost of the overall pressure vessel.

[0018] Compared with the prior art, other solutions of the present invention have achieved the following technical effects:

[0019] The provision of multiple air storage cavities can reduce the maintenance cost of the pressure vessel. When one of the air storage cavities is damaged and leaks, the other air storage cavities can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 is a cross-sectional view of a pressure vessel in an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of multiple gas storage cavities in a tank body according to an embodiment of the present invention;

[0023] Figure 3 is a cross-sectional view of a tank cover according to an embodiment of the present invention;

[0024] Figure 4 for Figure 3 A magnified view of the structure at center A;

[0025] Figure 5 It is a structural schematic diagram of the distribution of the vent holes at the end of the tank cover corresponding to the gas storage cavity in an embodiment of the present invention;

[0026] Figure 6 It is a structural schematic diagram of a rotating sleeve in an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the internal structure of the rotating sleeve in the embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the multi-layer structure of the tank wall in an embodiment of the present invention;

[0029] Among them, 1. tank body; 2. tank body; 3. tank cover; 4. air storage cavity; 5. air inlet and outlet pipes; 6. outer plastic layer; 7. middle steel layer; 8. inner plastic layer; 9. mounting rod; 10. partition; 11. first strip mounting groove; 12. second strip mounting groove; 13. rotating sleeve; 14. annular embedded part; 15. annular groove; 16. vent hole; 17. sealing ring; 18. sealing element; 19. avoidance space. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a pressure vessel to solve the problems existing in the prior art, by changing the tank wall structure of the tank body of the pressure vessel to prevent rust and oxidation, thereby increasing the service life of the pressure vessel.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Please refer to Figures 1 to 8 As shown, a pressure vessel is provided, including a tank body 1, wherein a gas storage cavity 4 for storing pressurized gas is arranged inside the tank body 1, an air inlet and outlet pipe 5 is arranged on the tank body 1, and a valve is arranged on the air inlet and outlet pipe 5, and the tank wall of the tank body 1 includes an outer plastic layer 6, an intermediate steel layer 7 and an inner plastic layer 8 which are arranged in sequence from the outside to the inside, and the outer plastic layer 6 and the inner plastic layer 8 are cast on both sides of the intermediate steel layer 7, which can improve the explosion-proof performance of the tank body 1, and the arrangement of the outer plastic layer 6 and the inner plastic layer 8 of the tank wall can serve as the outer contact surface and the inner contact surface of the tank body 1, and the characteristics of plastic are utilized to prevent the tank body 1 from rusting and oxidizing in different environments, and at the same time, the intermediate steel layer 7 provides good structural strength for the tank body 1; in addition, the arrangement of the outer plastic layer 6 and the inner plastic layer 8 can effectively reduce the weight and cost of the overall pressure vessel.

[0034] There can be one or more air storage chambers 4 in the tank body 1. When there is only one air storage chamber 4 in the tank body 1, once the tank body 1 is damaged and leaks, the entire tank body 1 needs to be replaced and the tank body 1 cannot be used any further, but the overall manufacturing cost is low; when there are multiple air storage chambers 4 in the tank body 1, the maintenance cost of the pressure vessel can be reduced. When one of the air storage chambers 4 is damaged and leaks, the other air storage chambers 4 can be used normally.

[0035] In this embodiment, a mounting rod 9 and a partition 10 are provided in the tank body 1. The mounting rod 9 is coaxially arranged with the tank body 1. A plurality of first strip mounting grooves 11 are arranged on the circumference of the mounting rod 9. A plurality of second strip mounting grooves 12 corresponding to the first strip mounting grooves 11 are arranged on the inner circumferential wall of the tank body 1. The first strip mounting grooves 11 and the second strip mounting grooves 12 are respectively matched with the two ends of the partition 10. The two ends of the partition 10 are respectively inserted into the first strip mounting grooves 11 and the second strip mounting grooves 12. The inner cavity of the tank body 1 is divided into a plurality of air storage cavities 4 by the partition 10. The air storage cavities 4 are between adjacent partitions 10. The provision of the partition 10 will also increase the structural strength of the overall pressure vessel.

[0036] The number of the air storage chambers 4 can be adjusted by adjusting the number of the partitions 10 .

[0037] The first strip-shaped installation groove 11 axially penetrates the installation rod 9 , so that the partition plate 10 is convenient to be slidably installed in the first strip-shaped installation groove 11 from one end of the first strip-shaped installation groove 11 .

[0038] In order to reduce the overall weight and prevent rust and oxidation, the mounting rod 9 is hollow, and the rod wall of the mounting rod 9 includes an outer plastic layer 6, an intermediate steel layer 7 and an inner plastic layer 8 arranged in sequence from the outside to the inside, wherein the outer plastic layer 6 and the inner plastic layer 8 are cast on both sides of the intermediate steel layer 7.

[0039] The partition 10 also includes an outer plastic layer 6, an intermediate steel layer 7 and an inner plastic layer 8 which are arranged in sequence to prevent rust and oxidation.

[0040] In this embodiment, a rotating sleeve 13 is provided for rotational sealing at the axial end of the tank body 1, which can be provided at one end or at both ends. Specifically, when the end needs to be provided with an inlet and outlet pipe 5, a corresponding rotating sleeve 13 is provided, and the rotational sealing method is as follows: an annular groove 15 is provided on the outer plastic layer 6 of the tank body 1, and the rotating sleeve 13 is a cylinder with one end closed as a whole, and the open end extends inward to form an annular embedding portion 14, which is embedded in the annular groove 15, and a sealing ring is provided between the annular embedding portion 14 and the annular groove 15 for sealing; the inlet and outlet pipe 5 is threadedly connected to the rotating sleeve 13, and the ends of the tank body 1 are provided with ventilation holes 16 corresponding to the multiple air storage chambers 4, and the apertures of the ventilation holes 16 are not The air inlet and outlet pipe 5 is larger than the inner diameter of the air inlet and outlet pipe 5. A sealing ring 17 is provided at one end of the air inlet and outlet pipe 5 close to the tank body 1. Multiple vents 16 are located on the rotation path of the air inlet and outlet pipe 5. When the air inlet and outlet pipe 5 corresponds to one vent 16, the air inlet and outlet pipe 5 is pressed against the end of the tank body 1 by screwing the air inlet and outlet pipe 5. At this time, the sealing ring 17 at the end of the air inlet and outlet pipe 5 realizes the sealing of the periphery of the vent 16, completes the connection between the vent 16 and the air inlet and outlet pipe 5, and realizes the positioning of the rotating sleeve 13. This design makes it necessary to set only one air inlet and outlet pipe 5 at the end of the air inlet and outlet pipe 5, so as to select the connection with any vent 16, and there is no need to set an air inlet and outlet pipe 5 corresponding to each vent 16, thereby reducing costs.

[0041] In order to facilitate the installation of the rotating sleeve 13, the rotating sleeve 13 is composed of two semicircular parts. During installation, the two semicircular parts are spliced ​​and snapped together at the end of the tank body 1, and then connected by bolts or welding. The connection between the two semicircular parts needs to be sealed.

[0042] Both axial ends of the mounting rod 9 and the partition plate 10 are in contact with the inner side walls of the tank body 1 at both axial ends through sealing pads to improve the sealing effect.

[0043] A seal 18 is provided between the rotating sleeve 13 and the end of the tank body 1 to prevent the multiple vent holes 16 from communicating with each other. The seal 18 is annular and fixed on the rotating sleeve 13, and rotates with the rotating sleeve 13. The seal 18 covers the multiple vent holes 16 and leaves an escape space 19. The escape space 19 matches the inlet and outlet pipes 5, which facilitates the inlet and outlet pipes 5 to be screwed downward to achieve communication with one of the vent holes 16.

[0044] The rotating sleeve 13 and the air inlet and outlet pipes 5 can be adjusted by manual rotation or by motor drive. Specifically, the pressure vessel also includes a first drive motor and a second drive motor. The first drive motor is transmission-connected to the rotating sleeve 13, and the second drive motor is transmission-connected to the air inlet and outlet pipes 5. The transmission connection method can be belt drive, gear drive, etc. When gear drive is used, annular teeth can be provided on the outer peripheral wall of the rotating sleeve 13 and the outer peripheral wall of the air inlet and outlet pipes 5. When the first drive motor and the second drive motor are provided, the two motors can be provided on the tank body 1 and the rotating sleeve 13, respectively.

[0045] A pressure monitoring alarm device is provided in each of the plurality of gas storage chambers 4. The pressure detection alarm device monitors the air pressure in each gas storage chamber 4. The principle is: by measuring the pressure, an alarm is sounded when the pressure reaches the set value. The alarm pressure value can be set according to the actual situation. For example, under transportation conditions, the internal gas will not be used. At this time, a low pressure value and a high pressure value can be set. The low pressure value is less than the set pressure in the gas storage chamber 4, and the high pressure value is greater than the set pressure in the gas storage chamber 4. When the tank body 1 is impacted by the outside world and deforms inward, the internal air pressure increases to the set high pressure value and an alarm is sounded. When the tank body 1 is damaged by the outside world and deflated, the internal pressure decreases to the set low pressure value and an alarm is sounded. Under the use condition, a low pressure value and a high pressure value are set. The low pressure value is set to the pressure when the gas storage chamber 4 needs to be replaced. The high pressure value is set to alarm when the internal pressure value increases to the set high pressure value when the tank body 1 is impacted by the outside world and deforms inward. When the gas storage chamber 4 is inflated, a high pressure value is set. The high pressure value is set to the pressure value required to be inflated in the gas storage chamber 4. After the alarm, the next gas storage chamber 4 can be inflated.

[0046] The tank body 1 includes a cylindrical tank body 2 and a cylindrical tank cover 3. The tank cover 3 is detachably connected to the tank body 2, and the detachable connection can be a threaded connection. The interior can be easily cleaned or maintained by removing the tank cover 3 to facilitate maintenance of the partition 10 or the mounting rod 9.

[0047] During actual use, multiple air storage chambers 4 are inflated in turn by screwing the air inlet and outlet pipes 5 and rotating the sleeve 13, and can be transported after inflation is completed; when in use, the compressed gas in multiple air storage chambers 4 can be used in turn by screwing the air inlet and outlet pipes 5 and rotating the sleeve 13.

[0048] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0049] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0050] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A pressure vessel, characterized in that: It comprises a tank body, wherein a gas storage cavity for storing pressurized gas is arranged inside the tank body, an air inlet and outlet pipe is arranged on the tank body, and the tank wall of the tank body comprises an outer plastic layer, a middle steel layer and an inner plastic layer which are arranged in sequence from the outside to the inside.

2. The pressure vessel according to claim 1, characterized in that: A plurality of the air storage cavities are arranged in the tank body, and the plurality of the air storage cavities are respectively connected to the air inlet and outlet pipes.

3. The pressure vessel according to claim 2, characterized in that: A mounting rod and a partition are provided in the tank body, a plurality of first strip mounting grooves are provided on the circumference of the mounting rod, a plurality of second strip mounting grooves corresponding to the first strip mounting grooves are provided on the inner circumferential wall of the tank body, two ends of the partition are respectively inserted into the first strip mounting groove and the second strip mounting groove, and the air storage cavity is between adjacent partitions.

4. The pressure vessel according to claim 3, characterized in that: The installation rod is hollow, and the rod wall of the installation rod comprises an outer plastic layer, a middle steel layer and an inner plastic layer which are arranged in sequence from the outside to the inside.

5. The pressure vessel according to claim 3, characterized in that: The partition comprises an outer plastic layer, a middle steel layer and an inner plastic layer which are arranged in sequence.

6. The pressure vessel according to claim 2, characterized in that: The axial end of the tank body is provided with a rotating sleeve for rotational sealing, the inlet and outlet pipes are threadedly connected to the rotating sleeve, and the end of the tank body is provided with ventilation holes corresponding to the multiple air storage chambers, the aperture of the ventilation holes is not larger than the inner diameter of the inlet and outlet pipes, and a sealing ring is provided at one end of the inlet and outlet pipes close to the tank body, and the multiple ventilation holes are located on the rotation path of the inlet and outlet pipes.

7. The pressure vessel according to claim 6, characterized in that A seal is provided between the rotating sleeve and the end of the tank body to prevent the plurality of vent holes from communicating with each other. The seal is annular and fixed on the rotating sleeve. The seal covers the plurality of vent holes and is provided with an escape space, which matches the inlet and outlet air pipes.

8. The pressure vessel according to claim 6, characterized in that The pressure container further comprises a first drive motor and a second drive motor, wherein the first drive motor is transmission-connected to the rotating sleeve, and the second drive motor is transmission-connected to the air inlet and outlet pipes.

9. The pressure vessel according to claim 2, characterized in that: A pressure monitoring and alarm device is arranged in each of the plurality of gas storage chambers.

10. The pressure vessel according to claim 1, characterized in that The can body comprises a can body and a can cover, and the can cover is detachably connected to the can body.

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