Safety relief mechanism of pressure vessel

Abstract

The utility model relates to the field of pressure vessels, in particular to a safety relief mechanism of a pressure vessel. The utility model provides a safety relief mechanism for a pressure container, which can assist in pressure relief of the pressure container when the pressure relief flow of the pressure container is large, and avoids damage of a valve body or parts in the valve body caused by high flow impact. A safety relief mechanism of a pressure vessel comprises a valve body, a pressure relief pipe, a connecting block and the like, the left side of the valve body is connected with the pressure relief pipe, and the connecting block is placed on the upper side of the valve body. When the flow in the pressure container is large, the connecting block moves upwards, the connecting block and the valve body are separated and opened, meanwhile, the blocking rod moves upwards, the blocking rod is separated from the sealing block, auxiliary pressure relief can be conducted on the pressure container when the pressure relief flow of the pressure container is large, and the pressure relief effect of the pressure container is improved. And damage to the valve body or parts in the valve body caused by high-flow impact is avoided.

Description

Technical Field

[0001] The utility model relates to the field of pressure vessels, in particular to a safety release mechanism for pressure vessels. Background Art

[0002] A pressure vessel is a closed device that contains gas or liquid and bears a certain pressure. It is widely used in the chemical, petroleum, energy and other industries. The safety relief device of the pressure vessel can automatically and quickly discharge the medium in the container when the pressure exceeds the limit, so that the pressure in the container is always kept within the allowable pressure range.

[0003] A pressure vessel and a safety relief device with publication (announcement) number CN213629075U, including a valve body, a spring chamber and a valve cover, wherein a spring is arranged in the spring chamber, one end of the spring is connected to an adjusting rod through a spring joint, and the adjusting rod extends into the valve cover, the adjusting rod is arranged as a square rod, a square hole for penetrating the adjusting rod is opened on the side wall of the spring chamber, a motor is fixedly arranged on the outer side of the valve cover, the output shaft of the motor extends into the valve cover and is driven and connected with an internal thread sleeve, a stud is matched in the internal thread sleeve, the stud is coaxially fixedly connected with the adjusting rod, the valve cover is also fixedly connected with an installation box, and the valve cover passes through the installation box, an electrically connected battery and a control board are fixedly arranged in the installation box, and the control board is electrically connected with the motor. When in use, the valve body is installed on the safety container, and when the pressure in the safety container increases, the spring chamber is pushed to open to release the pressure of the safety container, but because the pressure relief flow of the pressure vessel is large, the impact force on the valve body increases significantly, which easily leads to damage to the valve body and the parts in the valve body.

[0004] Therefore, a pressure vessel safety relief mechanism is now developed that can assist in pressure relief of the pressure vessel when the pressure relief flow of the pressure vessel is large, so as to avoid damage to the valve body or parts inside the valve body caused by high flow impact. Utility Model Content

[0005] In order to overcome the disadvantage of the existing safety relief device for pressure vessels that when the pressure relief flow rate of the pressure vessel is large, the impact force on the valve body increases significantly, which easily leads to damage to the valve body and parts inside the valve body, the utility model provides a safety relief mechanism for pressure vessels which can assist in pressure relief of the pressure vessel when the pressure relief flow rate of the pressure vessel is large, thereby avoiding damage to the valve body or parts inside the valve body caused by high flow impact.

[0006] The technical solution is: a pressure vessel safety release mechanism, including a valve body, a pressure relief pipe, a connecting block, a rotating handle, a screw and a pressing block. The pressure relief pipe is connected to the left side of the valve body, a connecting block is placed on the upper side of the valve body, a rotating handle is connected to the upper side of the screw, a screw is threadedly connected to the connecting block, and a pressing block is connected to the lower side of the screw.

[0007] As an improvement of the above solution, a flange is provided on the lower side of the valve body.

[0008] As an improvement of the above solution, it also includes a sealing block and a blocking rod, a plurality of blocking rods are connected to the lower side of the lower pressing block, the sealing block is connected inside the pressure relief pipe, and the blocking rods are in contact with the sealing block.

[0009] As an improvement of the above solution, a plurality of pressure relief holes are provided on the sealing block.

[0010] As an improvement of the above scheme, it also includes a connecting frame, a blocking block and a first telescopic spring. The lower pressure block is slidably connected to the connecting frame, the connecting frame is slidably connected to the sealing block, the first telescopic spring is connected between the connecting frame and the lower pressure block, and the blocking block is connected to the lower side of the connecting frame, and the blocking block is in contact with the valve body.

[0011] As an improvement of the above scheme, it also includes a guide rod and a second telescopic spring. A plurality of guide rods are connected to the lower side of the connecting block. The guide rods are all slidably connected to the valve body. A second telescopic spring is connected between the guide rods and the valve body.

[0012] The utility model has the following advantages: when the flow rate in the pressure vessel is large, the utility model moves the connecting block upward so that the connecting block is separated from the valve body and opens, and at the same time moves the blocking rod upward so that the blocking rod is separated from the sealing block, thereby achieving the effect of assisting the pressure relief of the pressure vessel when the pressure relief flow rate of the pressure vessel is large, avoiding damage to the valve body or parts inside the valve body caused by high flow impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model.

[0015] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model.

[0016] In the above figures: 1: valve body, 2: pressure relief pipe, 3: connecting block, 4: rotating handle, 5: screw, 6: pressing block, 7: sealing block, 8: blocking rod, 9: connecting frame, 10: blocking block, 11: first telescopic spring, 12: guide rod, 13: second telescopic spring. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] A pressure vessel safety release mechanism, such as Figure 1-3As shown, it includes a valve body 1, a pressure relief pipe 2, a connecting block 3, a rotating handle 4, a screw 5 and a pressing block 6, a sealing block 7 and a blocking rod 8, a connecting frame 9, a blocking block 10 and a first telescopic spring 11, a guide rod 12 and a second telescopic spring 13. The pressure relief pipe 2 is connected to the left side of the valve body 1, and a flange is provided on the lower side of the valve body 1 for easy docking. A connecting block 3 is placed on the upper side of the valve body 1, a rotating handle 4 is connected to the upper side of the screw 5, a screw 5 is threadedly connected to the connecting block 3, a pressing block 6 is connected to the lower side of the screw 5, and three blocking rods 8 are connected to the lower side of the pressing block 6. The pressure relief pipe 2 is connected to the inner side of the valve body 1. The sealing block 7 is connected, and three pressure relief holes are formed on the sealing block 7. The aperture of the pressure relief holes is consistent with that of the blocking rod 8. The blocking rod 8 is in contact with the sealing block 7. A connecting frame 9 is slidably connected to the lower pressing block 6. The connecting frame 9 is slidably connected to the sealing block 7. A first telescopic spring 11 is connected between the connecting frame 9 and the lower pressing block 6. A blocking block 10 is connected to the lower side of the connecting frame 9. The blocking block 10 is in contact with the valve body 1. Six guide rods 12 are connected to the lower side of the connecting block 3. The guide rods 12 are slidably connected to the valve body 1. A second telescopic spring 13 is connected between the guide rods 12 and the valve body 1.

[0019] When using the utility model, first install the valve body 1 on the pressure vessel, and then rotate the handle 4 to rotate the screw 5, so that the lower pressure block 6 moves downward, so that the blocking rod 8 moves downward and contacts the sealing block 7 to seal the lower part of the valve body 1, and the connecting frame 9 moves downward, so that the blocking block 10 moves downward and contacts the valve body 1 to seal the pressure vessel. When the pressure in the pressure vessel increases, the blocking block 10 is pushed upward under the action of the pressure, so that the connecting frame 9 slides upward on the lower pressure block 6, so that the first telescopic spring 11 is squeezed and contracted, so that the blocking block 10 is separated from the valve body 1, and the gas in the pressure vessel is discharged from the pressure relief pipe 2, thereby relieving the pressure of the pressure vessel. When the flow rate in the pressure vessel is large, after the first telescopic spring 11 is squeezed to the limit state, under the action of the pressure The lower pressure block 6 moves upward, the connecting block 3 moves upward, the guide rod 12 slides on the valve body 1, and the second telescopic spring 13 is squeezed and contracted, so that the connecting block 3 is separated from the valve body 1 and opened. When the lower pressure block 6 moves upward, the blocking rod 8 moves upward, so that the blocking rod 8 is separated from the sealing block 7, so that the gas in the pressure vessel is discharged from the pressure relief hole on the sealing block 7 and then from between the connecting block 3 and the valve body 1, thereby playing a role in assisting the pressure relief of the pressure vessel when the pressure relief flow of the pressure vessel is large, and avoiding the damage of the valve body 1 or parts in the valve body 1 caused by high flow impact. When the pressure relief is completed, the first telescopic spring 11 and the second telescopic spring 13 rebound, so that the connecting block 3 is reset, the blocking rod 8 is reset, and the blocking block 10 is reset to reseal the valve body 1.

[0020] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure vessel safety release mechanism, characterized in that: The invention comprises a valve body (1), a pressure relief pipe (2), a connecting block (3), a rotating handle (4), a screw rod (5) and a pressing block (6), wherein the left side of the valve body (1) is connected to the pressure relief pipe (2), the upper side of the valve body (1) is provided with the connecting block (3), the upper side of the screw rod (5) is connected to the rotating handle (4), the upper side of the connecting block (3) is threadedly connected to the screw rod (5), and the lower side of the screw rod (5) is connected to the pressing block (6).

2. A pressure vessel safety release mechanism as claimed in claim 1, characterized in that: A flange is provided on the lower side of the valve body (1).

3. A pressure vessel safety release mechanism as claimed in claim 1, characterized in that: It also includes a sealing block (7) and blocking rods (8), a plurality of blocking rods (8) are connected to the lower side of the lower pressing block (6), the sealing block (7) is connected inside the pressure relief pipe (2), and the blocking rods (8) are in contact with and cooperate with the sealing block (7).

4. A pressure vessel safety release mechanism as claimed in claim 3, characterized in that: The sealing block (7) is provided with a plurality of pressure relief holes, and the diameter of the pressure relief holes is consistent with that of the blocking rod (8).

5. A pressure vessel safety release mechanism as claimed in claim 3, characterized in that: It also includes a connecting frame (9), a blocking block (10) and a first telescopic spring (11); the lower pressing block (6) is slidably connected to the connecting frame (9); the connecting frame (9) and the sealing block (7) are slidably connected; the first telescopic spring (11) is connected between the connecting frame (9) and the lower pressing block (6); the blocking block (10) is connected to the lower side of the connecting frame (9); and the blocking block (10) is in contact with the valve body (1).

6. A pressure vessel safety release mechanism as claimed in claim 5, characterized in that: It also comprises guide rods (12) and second telescopic springs (13); a plurality of guide rods (12) are connected to the lower side of the connection block (3); the guide rods (12) are all slidably connected to the valve body (1); and a second telescopic spring (13) is connected between the guide rods (12) and the valve body (1).

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