Chemical explosion venting device capable of adjusting pressure threshold value

Abstract

The utility model discloses a chemical explosion venting device capable of adjusting a pressure threshold value, and relates to the technical field of pressure relief, the chemical explosion venting device comprises a pressure relief valve, the side face of the pressure relief valve is fixedly connected with a connecting pipe, one end of the connecting pipe is fixedly connected with a storage box, and a partition plate is slidably connected in the storage box; the inner wall of the pressure release valve is in threaded connection with a threaded rod, an abutting plate is slidably connected into the pressure release valve, the bottom end of the threaded rod penetrates through the inner wall of the pressure release valve and is rotationally connected with the upper end face of the abutting plate, a sealing block is slidably connected into the pressure release valve, and the upper end face of the sealing block is fixedly connected with a second spring. The pressure relief device has the advantages that the abutting plate can be driven to move up and down by rotating the threaded rod, the abutting plate can adjust the elastic force of the second spring to the sealing block, the pressure of high-pressure natural gas in the reaction tank needing to jack up the sealing block can be changed, and then different pressure threshold values can be adjusted for automatic pressure relief.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief, in particular to a chemical explosion relief device with an adjustable pressure threshold. Background Art

[0002] Pressure vessels refer to sealed devices that contain gas or liquid and bear a certain pressure. For example, storage and transportation containers, reaction containers, heat exchange containers and separation containers are all pressure vessels. Pressure vessels are commonly used in the industrial chemical industry to store materials and conduct chemical reactions. Therefore, there are many types of such devices on the market today, which can basically meet people's usage needs.

[0003] After searching, the applicant found that a Chinese patent disclosed "a chemical pressure vessel with emergency pressure relief function", and its publication (announcement) number is "CN221569546U". This patent mainly uses high-pressure gas to push the valve disc upward and then discharge the pressure through the exhaust hole. However, the size of the valve disc pushed up by the gas pressure cannot be adjusted. Therefore, we propose a chemical explosion relief device with an adjustable pressure threshold. Utility Model Content

[0004] The purpose of the utility model is to provide a chemical explosion relief device with an adjustable pressure threshold.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chemical explosion relief device with an adjustable pressure threshold, comprising a pressure relief valve, a connecting pipe fixedly connected to the side of the pressure relief valve, one end of the connecting pipe fixedly connected to a storage box, a partition slidably connected inside the storage box, a threaded rod threadedly connected to the inner wall of the pressure relief valve, a back plate slidably connected inside the pressure relief valve, the bottom end of the threaded rod penetrates the inner wall of the pressure relief valve and is rotatably connected to the upper end face of the back plate, a sealing block slidably connected inside the pressure relief valve, the upper end face of the sealing block is fixedly connected to a second spring, and the top end of the second spring is fixedly connected to the lower end face of the back plate.

[0006] As a further solution of the present invention: a first spring is fixedly connected to the front side of the partition, and one end of the first spring is fixedly connected to the inner wall of the storage box.

[0007] As a further solution of the present invention: a connecting valve is fixedly connected to the back of the storage box, and one end of the connecting valve is connected to the inside of the storage box.

[0008] As a further solution of the present invention: the shape of the side surface of the partition matches the shape of the inner wall of the storage box.

[0009] As a further solution of the present invention: the size of the sealing block matches the size of the inner wall of the pressure relief valve, and the size of the abutment plate matches the size of the inner wall of the pressure relief valve.

[0010] As a further solution of the present invention: a vent hole is provided on the front of the storage box.

[0011] As a further solution of the present invention: one end of the connecting pipe is connected to the inside of the pressure relief valve, and the other end of the connecting pipe is connected to the inside of the storage box.

[0012] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can drive the push plate to move up and down by rotating the threaded rod, and the push plate can adjust the elastic force of the second spring on the sealing block. The pressure of the high-pressure natural gas in the reaction tank required to push up the sealing block will change, and different pressure thresholds can be adjusted for automatic pressure relief;

[0014] 2. The utility model is connected to the pressure relief valve through a storage box, and the discharged natural gas will enter the storage box for temporary storage, which can prevent the natural gas from being directly discharged into the room. The staff can also recover the discharged natural gas through the connecting valve.

[0015] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a storage box in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the pressure relief valve in an embodiment of the present utility model;

[0019] Figure 4 This is a structural diagram of the sealing block in an embodiment of the present utility model;

[0020] Figure 5 It is a structural schematic diagram of the partition in the embodiment of the present utility model.

[0021] In the figure: 1. pressure relief valve; 2. threaded rod; 3. connecting pipe; 4. storage box; 5. vent; 6. partition; 7. first spring; 8. connecting valve; 9. abutment plate; 10. sealing block; 11. second spring. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0023] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please see the attached Figure 1 -Attached Figure 5 When the pressure relief valve 1 is opened, the pressure relief valve 1 is opened, and the pressure relief valve 1 is opened.

[0025] In the first embodiment, a first spring 7 is fixedly connected to the front surface of the partition 6, and one end of the first spring 7 is fixedly connected to the inner wall of the storage box 4;

[0026] Specifically, when the natural gas is automatically depressurized, the discharged natural gas directly enters the storage box 4 and contracts by squeezing the first spring 7 through the partition 6, so that the discharged natural gas can be temporarily stored, which is convenient for the staff to recover. The elastic force of the two first springs 7 is smaller than the elastic force of the second spring 11.

[0027] In the second embodiment, a connecting valve 8 is fixedly connected to the back of the storage box 4, and one end of the connecting valve 8 is connected to the inside of the storage box 4;

[0028] Specifically, the connecting valve 8 can facilitate the staff to recover the natural gas temporarily stored in the storage box 4 .

[0029] Working principle:

[0030] First, the staff can install the entire device in a reaction tank or other equipment. During work, the staff can rotate the threaded rod 2 clockwise, and the threaded rod 2 can drive the push plate 9 to move downward. The downward movement of the push plate 9 can cause the second spring 11 to contract, and the pressure of the second spring 11 on the sealing block 10 will increase. The pressure of the gas in the reaction tank required to push up the sealing block 10 will increase, thereby realizing the adjustment of the pressure threshold in the reaction tank. When the pressure in the reaction tank exceeds the pressure threshold, the high-pressure natural gas will push the sealing block 10 upward, and the natural gas can enter the storage box 4 through the connecting pipe 3 and push the partition 6 forward to squeeze the first spring 7. When the pressure in the reaction tank is lower than the pressure threshold, the second spring 11 can drive the sealing block 10 to move downward to seal the pressure relief valve 1. At this time, the staff can open the connecting valve 8, and the gas in the storage box 4 can be squeezed out by the first spring 7 pushing the partition 6 backward, which can facilitate the staff to recover the leaked natural gas. At this point, the entire work process ends.

[0031] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0034] For those skilled in the art, it is possible to make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention, and they still fall within the scope of protection of the present invention.

Claims

1. A chemical explosion relief device with an adjustable pressure threshold, comprising a pressure relief valve (1), characterized in that: The side of the pressure relief valve (1) is fixedly connected to a connecting pipe (3), one end of the connecting pipe (3) is fixedly connected to a storage box (4), a partition (6) is slidably connected in the storage box (4), the inner wall of the pressure relief valve (1) is threadedly connected to a threaded rod (2), a push plate (9) is slidably connected in the pressure relief valve (1), the bottom end of the threaded rod (2) passes through the inner wall of the pressure relief valve (1) and is rotatably connected to the upper end face of the push plate (9), a sealing block (10) is slidably connected in the pressure relief valve (1), the upper end face of the sealing block (10) is fixedly connected to a second spring (11), and the top end of the second spring (11) is fixedly connected to the lower end face of the push plate (9).

2. A chemical explosion venting device with adjustable pressure threshold according to claim 1, characterized in that: A first spring (7) is fixedly connected to the front surface of the partition (6), and one end of the first spring (7) is fixedly connected to the inner wall of the storage box (4).

3. The chemical explosion venting device with adjustable pressure threshold according to claim 1, characterized in that: A connecting valve (8) is fixedly connected to the back of the storage box (4), and one end of the connecting valve (8) is in communication with the interior of the storage box (4).

4. The chemical explosion venting device with adjustable pressure threshold according to claim 1, characterized in that: The shape of the side surface of the partition (6) matches the shape of the inner wall of the storage box (4).

5. The chemical explosion venting device with adjustable pressure threshold according to claim 1, characterized in that: The size of the sealing block (10) matches the size of the inner wall of the pressure relief valve (1), and the size of the abutment plate (9) matches the size of the inner wall of the pressure relief valve (1).

6. The chemical explosion venting device with adjustable pressure threshold according to claim 1, characterized in that: A vent hole (5) is provided on the front of the storage box (4).

7. The chemical explosion venting device with adjustable pressure threshold according to claim 1, characterized in that: One end of the connecting pipe (3) is connected to the inside of the pressure relief valve (1), and the other end of the connecting pipe (3) is connected to the inside of the storage box (4).

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