Pressure vessel cover plate structure

Abstract

The utility model provides a pressure vessel cover plate structure which comprises a cover plate with an exhaust hole formed in the end face of the top end, an air inlet hole formed in the end face of the bottom end of the cover plate and communicated with the exhaust hole, and a pressure relief mechanism arranged in the cover plate and used for controlling the air inlet hole to be communicated with the interior of the exhaust hole. A lifting groove with the top end penetrating through the exhaust hole, the side wall and the bottom end penetrating through the air inlet hole is formed in the cover plate in the axis direction. The pressure relief mechanism comprises a lifting column movably arranged in the lifting groove in a penetrating mode through sealing, a sealing ring arranged at the bottom end of the lifting column and a lifting assembly arranged in the cover plate and used for controlling the lifting column to ascend and descend in the lifting groove, and through holes are formed in the two ends of the lifting column. According to the pressure relief device, pressure relief in the pressure container can be conveniently controlled, the situation that internal gas leaks is avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessels, in particular to a pressure vessel cover plate structure. Background Art

[0002] Pressure vessels are usually devices for holding gases and liquids. When the temperature changes, the internal pressure will also change. At this time, an exhaust device is needed, and the equipment also needs to be sealed, so a sealing cover is needed.

[0003] For example, the authorized patent with publication number CN217519200U (a pressure vessel sealing cover): includes a cover plate and a sealing plate and an annular plate arranged at the bottom of the cover plate from the inside to the outside in sequence, a pressure relief assembly is provided in the cover plate, and a driving assembly for driving the pressure relief assembly is provided on the top of the cover plate; the pressure relief assembly includes a sealing nozzle slidably arranged at the center of the cover plate and the sealing plate, a mounting rod is provided on the top of the sealing nozzle, a threaded column is penetrated and connected to the mounting rod, and an auxiliary plate is connected to the external thread of the threaded column, and mounting cavities that cooperate with the cover plate and the sealing plate are provided inside the cover plate and the sealing plate, and penetrate the cover plate and the sealing plate respectively, two pressure relief grooves are provided in the cover plate, and the two pressure relief grooves are respectively connected to the left and right sides of the mounting cavity, a strip guide strip is vertically provided outside the mounting rod, and a strip guide groove that cooperates with the strip guide strip is provided in the mounting cavity. The utility model replaces the traditional manual pressure relief by the cooperation of the driving component and the pressure relief component, which saves time and labor and improves safety; at the same time, two pressure relief grooves are used for diversion and pressure relief, which improves the pressure relief capacity and thus improves the safety performance.

[0004] Most of the existing pressure vessel sealing covers are manually depressurized, which has poor safety and is time-consuming and labor-intensive. Even if the sealing cover is improved to facilitate pressure relief, when the pressure inside the pressure vessel is relieved through the above-mentioned technical features, the pressure relief component is controlled by the driving component to work. However, since the internal pressure of the pressure vessel is applied to the inner wall, the sealing nozzle is directly set for sealing. However, the pressure inside the pressure vessel will exert an outward force on the sealing nozzle. On the one hand, a greater force is needed to control the sealing nozzle to move downward for sealing. On the other hand, when the pressure inside the pressure vessel is too high and the sealing nozzle cannot be completely sealed, the gas inside the pressure vessel will leak, increasing the danger. Utility Model Content

[0005] In view of the above technical problems, the utility model provides a pressure vessel cover structure, which can conveniently control the pressure relief inside the pressure vessel and avoid leakage of internal gas, thereby improving safety.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure vessel cover plate structure, comprising a cover plate with an exhaust hole on the top end face, an air inlet hole arranged on the bottom end face of the cover plate and communicating with the exhaust hole, and a pressure relief mechanism arranged in the cover plate to control the communication between the air inlet hole and the inside of the exhaust hole, a lifting groove with the top end passing through the exhaust hole and the bottom end of the side wall passing through the air inlet hole is arranged in the cover plate in the axial direction, the pressure relief mechanism comprises a lifting column which is penetrated in the lifting groove through a sealing movement, a sealing ring arranged on the bottom end of the lifting column, and a lifting assembly arranged in the cover plate and controlling the lifting column to perform a lifting movement in the lifting groove, and through holes are arranged on both ends of the lifting column.

[0007] Preferably, the lifting assembly includes a return spring arranged in an elastic groove opened in the bottom wall of the lifting groove, and a control component arranged in the cover plate and controlling the lifting column to move downward in the lifting groove, and the two ends of the return spring are respectively fixedly connected to the bottom wall of the elastic groove and the bottom end surface of the lifting column; when the return spring is in a normally extended state, the bottom end of the lifting column is located above the connection port between the lifting groove and the air inlet hole.

[0008] Preferably, the control component includes two control rods arranged in control grooves opened in two symmetrical groove walls at the top of the lifting groove, a control structure arranged in the control groove and controlling the two control rods to approach or move away from each other, and two rollers both arranged on the lifting column through fixed blocks, the adjacent end surfaces of the two control rods are inclined downward, and the adjacent inclined surfaces of the two control rods are respectively in contact with different rollers.

[0009] Preferably, the control structure includes a control screw rod with one end rotatably arranged on the bottom wall of the control groove and the other end threadedly connected and penetrated into the control rod shaft, and a control motor arranged in the control groove and controlling the control screw rod to rotate.

[0010] Preferably, the control structure includes a first electromagnet arranged on the bottom wall of the control groove, and a second electromagnet arranged on an end surface of the control rod adjacent to the first electromagnet.

[0011] Preferably, an annular plate is fixedly provided on the bottom end surface of the cover plate.

[0012] The beneficial effects of the utility model are as follows: the lifting column is directly controlled to move downward in the lifting slot through the lifting assembly, and the bottom end of the lifting column is tightly fitted with the bottom wall of the lifting slot, and a sealing ring is arranged on the end surface of the bottom end of the lifting column, so as to ensure the sealed connection between the bottom end of the lifting column and the bottom wall of the lifting slot. When the gas inside the pressure vessel needs to be depressurized, the lifting column is directly controlled to move upward in the lifting slot through the lifting assembly, and when the bottom end of the lifting column moves to above the connection port between the lifting slot and the air inlet hole, the gas inside the pressure vessel flows into the lifting slot through the air inlet hole, and is discharged through the through hole provided on the lifting column and the exhaust hole provided on the cover plate, thereby facilitating the depressurization of the interior of the pressure vessel, and can conveniently control the depressurization inside the pressure vessel, avoid the leakage of internal gas, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 The utility model is a simplified structural diagram of the pressure vessel cover structure.

[0015] Figure 2 This is a bottom view structural schematic diagram of the pressure vessel cover plate structure proposed by the utility model.

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the cover plate of the present utility model.

[0017] Figure 4 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0018] In the figure: 1. cover plate; 2. exhaust hole; 3. annular plate; 4. air inlet hole; 5. lifting groove; 6. control groove; 7. control screw rod; 8. control rod; 9. lifting column; 10. elastic groove; 11. reset spring; 12. through hole; 13. fixing block; 14. roller. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] See also Figure 1-4A pressure vessel cover structure comprises a cover 1 with an exhaust hole 2 on the top end face, an air inlet 4 arranged on the bottom end face of the cover 1 and communicating with the exhaust hole 2, and a pressure relief mechanism arranged in the cover 1 to control the air inlet 4 to communicate with the inside of the exhaust hole 2. A lifting groove 5 is arranged in the cover 1 in the axial direction, the top of which passes through the exhaust hole 2 and the bottom of the side wall of the cover 1 passes through the air inlet 4. The pressure relief mechanism comprises a lifting column 9 which is inserted into the lifting groove 5 through a sealing activity, a sealing ring arranged on the bottom end of the lifting column 9, and a lifting component which is arranged in the cover 1 and controls the lifting column 9 to perform a lifting movement in the lifting groove 5. Through holes 12 are arranged on both ends of the lifting column 9.

[0021] like Figure 1-4 As shown, the cover plate 1 is mounted and fixed on the pressure vessel, and when the pressure inside the pressure vessel needs to be relieved, the lifting column 9 is driven by the lifting assembly to move upward in the lifting groove 5, so as to control the bottom end to move upward in a state of being fitted with the bottom wall of the lifting groove 5, and control the bottom end of the lifting column 9 to move above the connection port between the lifting groove 5 and the air inlet 4. At this time, the gas inside the pressure vessel flows through the through hole 12 opened on the lifting column 9 through the air inlet 4, and is discharged from the pressure vessel through the exhaust hole 2, so as to facilitate the pressure relief inside the pressure vessel and ensure the safety of pressure relief. The air is taken in through the air inlet 4 on the side of the lifting groove 5, thereby avoiding the situation that the lifting column 9 moves upward under the action of pressure due to excessive pressure inside the pressure vessel. When it is not necessary to relieve the pressure inside the pressure vessel, the lifting column 9 is directly driven by the lifting assembly to move downward, and the bottom end of the lifting column 9 is closely fitted with the bottom wall of the lifting groove 5, thereby avoiding the situation that the gas inside the pressure vessel leaks. The pressure relief inside the pressure vessel can be conveniently controlled, and the internal gas leakage is avoided, thereby improving safety.

[0022] like Figure 4 As shown, the lifting assembly includes a return spring 11 arranged in an elastic groove 10 opened on the bottom wall of the lifting groove 5, and a control member arranged in the cover plate 1 and controlling the lifting column 9 to move downward in the lifting groove 5, and the two ends of the return spring 11 are respectively fixedly connected to the bottom wall of the elastic groove 10 and the bottom end surface of the lifting column 9; when the return spring 11 is in a normal extension state, the bottom end of the lifting column 9 is located above the connection port between the lifting groove 5 and the air inlet 4, wherein when the return spring 11 is in a normal extension state, it is convenient to move the lifting column 9 upward in the lifting groove 5, and when the bottom end of the lifting column 9 moves to above the connection port between the air inlet 4 and the lifting groove 5, it is convenient to relieve the pressure inside the pressure vessel.

[0023] like Figure 4As shown, the control member includes two control rods 8 arranged in control grooves 6 provided in two symmetrical groove walls at the top of the lifting groove 5, a control structure arranged in the control groove 6 and controlling the two control rods 8 to approach or move away from each other, and two rollers 14 both arranged on the lifting column 9 through a fixing block 13. The adjacent end surfaces of the two control rods 8 are inclined downward, and the adjacent inclined surfaces of the two control rods 8 are respectively fitted with different rollers 14, wherein the two control rods 8 are driven to approach each other through the control structure, so that it is convenient to push the rollers 14 arranged on the lifting column 9 to move on the inclined surfaces of the top ends of the control rods 8 through the adjacent end sides of the two control rods 8, so as to facilitate driving the lifting column 9 to move downward in the lifting groove 5, so as to facilitate controlling the bottom end of the lifting column 9 to be closely fitted with the bottom end of the lifting groove 5, and controlling by setting a sealing ring on the bottom end of the lifting column 9, so as to facilitate ensuring the sealing fit between the lifting column 9 and the bottom wall of the lifting groove 5, avoiding the leakage of internal gas and improving safety.

[0024] like Figure 4 As shown, the control structure includes a control screw rod 7, one end of which is rotatably arranged on the bottom wall of the control groove 6 and the other end of which is threadedly connected and penetrates the rod body of the control rod 8, and a control motor which is arranged in the control groove 6 and controls the control screw rod 7 to rotate, wherein the control motor drives the control screw rod 7 to rotate, so as to facilitate the control of two control rods 8 threadedly connected and sleeved on different control screw rods 7 to approach each other, so as to facilitate the lifting column 9 to move downward through the roller 14, so as to facilitate the control of the bottom end of the lifting column 9 to seal and fit with the bottom wall of the lifting groove 5, thereby avoiding gas leakage inside the pressure vessel, and conveniently controlling the pressure relief inside the pressure vessel, and avoiding the leakage of internal gas, thereby improving safety.

[0025] The control structure includes a first electromagnet arranged on the bottom wall of the control groove 6, and a second electromagnet arranged on the end surface of the control rod 8 adjacent to the first electromagnet, wherein the magnetic poles of the adjacent ends of the adjacent first electromagnet and the second electromagnet are controlled to be the same, thereby facilitating the control of the two control rods 8 passing through the two control grooves 6 to approach each other.

[0026] An annular plate 3 is fixedly arranged on the bottom end surface of the cover plate 1 .

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure vessel cover plate structure, comprising a cover plate (1) with an exhaust hole (2) formed on a top end surface, an air inlet (4) provided on a bottom end surface of the cover plate (1) and communicating with the exhaust hole (2), and a pressure relief mechanism provided in the cover plate (1) for controlling the air inlet (4) to communicate with the inside of the exhaust hole (2), characterized in that: A lifting groove (5) is provided in the cover plate (1) in the axial direction, the top end of which penetrates the exhaust hole (2) and the bottom end of the side wall of which penetrates the air inlet hole (4). The pressure relief mechanism comprises a lifting column (9) which penetrates the lifting groove (5) through a sealing movement, a sealing ring arranged on the bottom end of the lifting column (9), and a lifting assembly which is arranged in the cover plate (1) and controls the lifting column (9) to perform lifting movement in the lifting groove (5). Through holes (12) are provided at both ends of the lifting column (9).

2. A pressure vessel cover structure according to claim 1, characterized in that: The lifting assembly comprises a return spring (11) arranged in an elastic groove (10) provided in the bottom wall of the lifting groove (5), and a control member arranged in the cover plate (1) and controlling the lifting column (9) to move downward in the lifting groove (5); the two ends of the return spring (11) are respectively fixedly connected to the bottom wall of the elastic groove (10) and the bottom end surface of the lifting column (9); when the return spring (11) is in a normally extended state, the bottom end of the lifting column (9) is located above the connection between the lifting groove (5) and the air inlet hole (4).

3. A pressure vessel cover structure according to claim 2, characterized in that: The control member comprises two control rods (8) arranged in control grooves (6) formed in two symmetrical groove walls at the top of the lifting groove (5), a control structure arranged in the control groove (6) and controlling the two control rods (8) to move closer to or farther from each other, and two rollers (14) both arranged on the lifting column (9) through a fixing block (13), the adjacent end surfaces of the two control rods (8) both being inclined surfaces inclined downward, and the adjacent inclined surfaces of the two control rods (8) respectively fit with different rollers (14).

4. A pressure vessel cover structure according to claim 3, characterized in that: The control structure comprises a control screw rod (7) having one end rotatably arranged on the bottom wall of the control groove (6) and the other end of which is threadedly connected and penetrates into the rod body of the control rod (8), and a control motor which is arranged in the control groove (6) and controls the control screw rod (7) to rotate.

5. A pressure vessel cover structure according to claim 3, characterized in that: The control structure comprises a first electromagnet arranged on the bottom wall of the control groove (6), and a second electromagnet arranged on an end surface of a control rod (8) adjacent to the first electromagnet.

6. A pressure vessel cover structure according to claim 1, characterized in that: An annular plate (3) is fixedly arranged on the bottom end surface of the cover plate (1).

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