Safety pressure relief device for pressure container

Abstract

The utility model belongs to the technical field of industrial production, and discloses a safety pressure relief device for a pressure container, which comprises a main body valve seat, a spring gland is arranged at the top end of the main body valve seat and is in threaded connection with the main body valve seat, and a pressure relief component for adjusting the air pressure in the pressure container is arranged in the main body valve seat. An adjusting assembly used for limiting the pressure relief assembly is arranged in the spring gland, when the air pressure in the container reaches a limiting value, the pressure relief assembly makes contact with the adjusting assembly for limiting, after the air pressure in the container drops to a safety value, the adjusting assembly is separated from the pressure relief assembly, and then the pressure relief assembly keeps the container sealed again. Due to the design, the pressure container can be sealed after complete pressure relief, and the safety and practicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial production, in particular to a safety pressure relief device for a pressure vessel. Background Art

[0002] A pressure relief device for a pressure vessel is a device used to protect the safety of the pressure vessel. Its main function is to automatically open and release the pressure when the internal pressure of the pressure vessel exceeds the set value, thereby preventing the vessel from rupturing or exploding and ensuring the safety of personnel and equipment.

[0003] For example, the utility model with announcement number CN218094190U discloses a safety pressure relief device for a pressure vessel, including a tank cover structure, a transmission structure provided on one side of the tank cover structure, a pressure regulating structure provided in conjunction with the transmission structure, the tank cover structure including a cover body, a tank body outlet, a cooling tank, and a cold air inlet, the transmission structure including a pump body inlet, an outlet pipe, a first regulating valve, an outlet connection port, a turbine pump, and a hot air inlet, and the pressure regulating structure including a vortex tube, a compressed air pipe, a second regulating valve, a cold end, and a hot end. Beneficial effect: The utility model can cool and regulate the pressure at the tank body outlet by cooperating with the pressure regulating structure through the provided tank cover structure, reduce the outlet pressure by cooling the gas, thereby controlling the outlet pressure and keeping its pressure output within a safe range.

[0004] During the implementation of this application, it was found that the technology has the following problems: most of the existing pressure relief devices can only open after the container reaches a critical value. When the air pressure in the container decreases to a certain level, the device will close, resulting in a certain amount of residual pressure in the container, posing a safety hazard and reducing the practicality of the device.

[0005] For this reason, a safety pressure relief device for a pressure vessel is proposed. Utility Model Content

[0006] The purpose of the present utility model is to solve the problem that most existing pressure relief devices can only be opened after the container reaches a critical value. When the air pressure in the container decreases to a certain level, the device will close, resulting in a certain residual pressure in the container, posing a safety hazard and reducing the practicality of the device. The present utility model provides a safety pressure relief device for a pressure vessel.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A safety pressure relief device for a pressure vessel includes a main valve seat, a spring pressure cover is provided at the top of the main valve seat, and the spring pressure cover is threadedly connected to the main valve seat, a pressure relief component for adjusting the internal air pressure of the pressure vessel is provided in the main valve seat, and an adjustment component for limiting the pressure relief component is provided in the spring pressure cover.

[0009] Furthermore, the pressure relief assembly includes a valve core, and the valve core is movably connected to the main valve seat. A pressure relief channel is opened inside the valve core, and both ends of the pressure relief channel pass through the side and bottom surfaces of the valve core respectively.

[0010] Furthermore, a limit block is provided on the top of the valve core, a connecting rod is fixed between the limit block and the valve core, a partition is provided in the spring pressure cover, and the connecting rod passes through the partition, and a return spring is fixed between the partition and the valve core.

[0011] Furthermore, the adjustment component includes a movable block, a telescopic groove is provided on the surface of the movable block, an arc block is provided in the telescopic groove, and the arc block is movably connected to the telescopic groove.

[0012] Furthermore, a telescopic spring is provided between the arc block and the telescopic slot, a rotating motor is provided on the bottom surface of the spring pressure cover, a rotating shaft is provided at the output end of the rotating motor, and the rotating shaft is fixedly connected to the movable block.

[0013] Furthermore, an air pressure sensor is provided in the main valve seat, and a controller is provided on the bottom surface of the spring pressure cover, and the controller is electrically connected to the rotating motor and the air pressure sensor respectively.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides a pressure relief assembly in the main valve seat and an adjusting assembly in the spring pressure cover. When the air pressure in the container reaches a limited value, the pressure relief assembly will contact and limit the adjusting assembly. When the air pressure in the container drops to a safe value, the adjusting assembly will separate from the pressure relief assembly, and then the pressure relief assembly will keep the container sealed again. These designs enable the pressure vessel to be sealed after complete pressure relief, thereby improving the safety and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the present utility model;

[0017] Figure 2 It is an overall cross-sectional view of the utility model;

[0018] Figure 3 This is an exploded view of the overall structure of the utility model;

[0019] Figure 4 It is a structural diagram of the pressure relief assembly of the utility model;

[0020] Figure 5 It is a cross-sectional view of the adjustment assembly of the utility model;

[0021] Figure 6 It is a structural exploded view of the adjustment component of the utility model.

[0022] Figure numerals: 1. Pressure relief assembly; 101. Limit block; 102. Connecting rod; 103. Return spring; 104. Valve core; 105. Pressure relief channel; 2. Adjustment assembly; 201. Rotating motor; 202. Rotating shaft; 203. Movable block; 204. Arc block; 205. Telescopic spring; 206. Telescopic slot; 3. Spring pressure cover; 4. Controller; 5. Main valve seat; 6. Air pressure sensor; 7. Partition. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0027] like Figures 1 to 6 As shown, it includes a main valve seat 5, a spring pressure cover 3 is provided at the top of the main valve seat 5, and the spring pressure cover 3 is threadedly connected to the main valve seat 5, a pressure relief component 1 for adjusting the internal air pressure of the pressure vessel is provided in the main valve seat 5, and an adjustment component 2 for limiting the pressure relief component 1 is provided in the spring pressure cover 3.

[0028] Specifically, when the air pressure in the container reaches a limit value, the pressure relief component 1 will contact the regulating component 2 to limit the position. When the air pressure in the container drops to a safe value, the regulating component 2 will separate from the pressure relief component 1, and then the pressure relief component 1 will keep the container sealed again. These designs enable the pressure vessel to be sealed after complete pressure relief, thereby improving the safety and practicality of the device.

[0029] The pressure relief assembly 1 includes a valve core 104, and the valve core 104 is movably connected to the main valve seat 5. A pressure relief channel 105 is opened inside the valve core 104, and the two ends of the pressure relief channel 105 respectively pass through the side and bottom surfaces of the valve core 104. A limit block 101 is provided on the top of the valve core 104, and a connecting rod 102 is fixed between the limit block 101 and the valve core 104. A partition 7 is provided in the spring pressure cover 3, and the connecting rod 102 passes through the partition 7. A reset spring 103 is fixed between the partition 7 and the valve core 104.

[0030] Specifically, in the pressure relief assembly 1, the valve core 104 is first sealed and connected to the main valve seat 5. When the air pressure in the pressure vessel reaches a certain value, the air pressure will push the valve core 104 to move upward in the main valve seat 5, and then the pressure relief channel 105 in the valve core 104 will dock with the side channel of the main valve seat 5. When the air pressure in the pressure vessel drops, the valve core 104 will reset under the action of the reset spring 103.

[0031] The adjusting component 2 includes a movable block 203, a telescopic groove 206 is provided on the surface of the movable block 203, an arc block 204 is provided in the telescopic groove 206, and the arc block 204 is movably connected to the telescopic groove 206, and a telescopic spring 205 is provided between the arc block 204 and the telescopic groove 206, a rotating motor 201 is provided on the bottom surface of the spring pressure cover 3, a rotating shaft 202 is provided at the output end of the rotating motor 201, and the rotating shaft 202 is fixedly connected to the movable block 203, an air pressure sensor 6 is provided in the main valve seat 5, and a controller 4 is provided on the bottom surface of the spring pressure cover 3, and the controller 4 is electrically connected to the rotating motor 201 and the air pressure sensor 6 respectively.

[0032] Specifically, in the adjustment component 2, when the limit block 101 enters the top of the partition 7 along with the connecting rod 102, the limit block 101 will squeeze the arc block 204, and then the arc block 204 will enter the telescopic groove 206 along with the telescopic spring 205. When the limit block 101 is completely moved to the top of the arc block 204, under the action of the telescopic spring 205, the arc block 204 will pop out from the telescopic groove 206 to position the limit block 101. When the air pressure in the pressure vessel is exhausted, under the drive of the rotating motor 201, the arc block 204 will leave the limit block 101, and then under the action of the reset spring 103, the container will be sealed.

[0033] In summary: in the pressure relief assembly 1, the valve core 104 is first sealed and connected to the main valve seat 5. When the air pressure in the pressure vessel reaches a certain value, the air pressure will push the valve core 104 to move upward in the main valve seat 5, and then the pressure relief channel 105 in the valve core 104 will dock with the side channel of the main valve seat 5. When the air pressure in the pressure vessel drops, the valve core 104 will reset under the action of the reset spring 103. In the regulating assembly 2, when the limit block 101 enters the top of the partition 7 along with the connecting rod 102, the limit block 101 will squeeze the arc block 204, and then the arc block 204 will enter the telescopic groove 206 along with the telescopic spring 205. When the limit block 101 is completely moved to the arc block After it reaches the top of 204, under the action of the telescopic spring 205, the arc block 204 will pop out from the telescopic slot 206 to position the limit block 101. When the air pressure in the pressure vessel is exhausted, the arc block 204 will leave the limit block 101 under the drive of the rotating motor 201, and then the container will be sealed under the action of the reset spring 103. When the air pressure in the container reaches the limit value, the pressure relief component 1 will contact and limit with the regulating component 2. When the air pressure in the container drops to a safe value, the regulating component 2 will separate from the pressure relief component 1, and then the pressure relief component 1 will keep the container sealed again. These designs enable the pressure vessel to be sealed after complete pressure relief, thereby improving the safety and practicality of the device.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety pressure relief device for a pressure vessel, comprising a main valve seat (5), characterized in that: A spring pressure cover (3) is provided at the top end of the main valve seat (5), and the spring pressure cover (3) is threadedly connected to the main valve seat (5). A pressure relief component (1) for regulating the internal air pressure of the pressure vessel is provided in the main valve seat (5), and an adjustment component (2) for limiting the pressure relief component (1) is provided in the spring pressure cover (3).

2. A safety pressure relief device for a pressure vessel according to claim 1, characterized in that: The pressure relief assembly (1) comprises a valve core (104), and the valve core (104) is movably connected to the main valve seat (5). A pressure relief channel (105) is provided inside the valve core (104), and two ends of the pressure relief channel (105) respectively penetrate the side surface and bottom surface of the valve core (104).

3. A safety pressure relief device for a pressure vessel according to claim 2, characterized in that: A limit block (101) is provided on the top of the valve core (104), a connecting rod (102) is fixed between the limit block (101) and the valve core (104), a partition (7) is provided in the spring pressure cover (3), and the connecting rod (102) passes through the partition (7), and a return spring (103) is fixed between the partition (7) and the valve core (104).

4. A safety pressure relief device for a pressure vessel according to claim 3, characterized in that: The adjustment assembly (2) comprises a movable block (203), a telescopic groove (206) is provided on the surface of the movable block (203), an arc block (204) is provided in the telescopic groove (206), and the arc block (204) is movably connected to the telescopic groove (206).

5. A safety pressure relief device for a pressure vessel according to claim 4, characterized in that: A telescopic spring (205) is provided between the arc block (204) and the telescopic slot (206), a rotating motor (201) is provided on the bottom surface of the spring pressure cover (3), a rotating shaft (202) is provided at the output end of the rotating motor (201), and the rotating shaft (202) is fixedly connected to the movable block (203).

6. A safety pressure relief device for a pressure vessel according to claim 5, characterized in that: An air pressure sensor (6) is provided in the main valve seat (5), and a controller (4) is provided on the bottom surface of the spring pressure cover (3), and the controller (4) is electrically connected to the rotating motor (201) and the air pressure sensor (6), respectively.

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