Petroleum storage tank ventilation valve

Abstract

The utility model relates to a petroleum storage tank breather valve which comprises a valve body and a breather mechanism, the valve body is used for being installed on a storage tank, the breather mechanism is arranged on the valve body, and the breather mechanism is used for adjusting according to the air pressure in the storage tank so as to guarantee the air pressure temperature in the storage tank. The valve body is installed on the storage tank, then the ventilation mechanism can be adjusted according to the air pressure in the storage tank, when the air pressure in the storage tank is high, the ventilation mechanism slides outwards under the influence of the air pressure, the ventilation end in the ventilation mechanism is exposed, and then the ventilation effect is achieved; when the air pressure in the storage tank is low, the ventilation mechanism can be influenced by the air pressure to move inwards, the other ventilation end is exposed, and then the air inlet effect is achieved, by means of the technical means, automatic air inlet or exhaust operation can be conducted according to the air pressure condition in the storage tank, and compared with a transmission electric control ventilation valve, the air inlet efficiency is improved. And other auxiliary equipment is not needed, so that the use cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of air vent valves, in particular to an air vent valve for a petroleum storage tank. Background Art

[0002] Oil storage tanks are large containers used to store crude oil or petroleum products. When designing these containers, many factors need to be considered, including safety, environmental protection, and economy. One of these factors is how to deal with changes in internal air pressure caused by temperature changes or other reasons, which is where the breather valve comes in.

[0003] With the advancement of technology, electronically controlled vent valves have gradually replaced traditional mechanical vent valves. Electronically controlled vent valves are usually equipped with sensors that can monitor the pressure and temperature changes in the tank in real time and adjust the opening and closing of the valve in a more accurate way. However, the cost of electronically controlled vent valves is relatively high, and other supporting equipment needs to be built when they are used, and the subsequent maintenance costs are also high, which will undoubtedly increase the cost investment for some tanks that do not require such high air pressure accuracy.

[0004] Therefore, those skilled in the art have just proposed a kind of oil storage tank breathable valve. Utility Model Content

[0005] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a petroleum storage tank vent valve.

[0006] The technical solution of the utility model is as follows: a petroleum storage tank vent valve, comprising a valve body and a vent mechanism, wherein the valve body is used to be installed on the storage tank, the vent mechanism is arranged on the valve body, and the vent mechanism is used to adjust according to the air pressure inside the storage tank to ensure the air pressure temperature inside the storage tank;

[0007] The valve body is composed of an upper fixing plate, a lower connecting plate and a fixing sleeve. The upper fixing plate and the lower connecting plate are arranged in parallel up and down, and the fixing sleeve is fixedly connected between the upper fixing plate and the lower connecting plate.

[0008] Through the above-mentioned technical means, the valve body is installed on the storage tank, and then the breathable mechanism can be adjusted according to the internal air pressure of the storage tank. When the internal air pressure of the storage tank is high, the breathable mechanism will slide outwards due to the influence of the air pressure, so that the breathable end in the breathable mechanism is exposed, thereby achieving the effect of ventilation; when the internal air pressure of the storage tank is low, the breathable mechanism will move inwards due to the influence of the air pressure, so that the other breathable end is exposed, thereby achieving the air intake effect.

[0009] As a preferred embodiment, the ventilation mechanism includes a movable tube, a fixed block and a sealing ring, the movable tube is arranged inside the fixed sleeve, the upper and lower ends of the movable tube extend to the outside of the upper fixed plate and the lower connecting plate respectively, the fixed block is fixedly connected to the outside of the movable tube and is located outside the fixed sleeve, the sealing ring is fixedly connected to the outside of the fixed block, and the sealing ring is in contact with the inner wall of the fixed sleeve.

[0010] Through the above technical means, the sealing ring can be moved inside the fixed sleeve through the moving tube.

[0011] As a preferred embodiment, the ventilation mechanism further includes a spring and a connecting hole. The spring is provided in two pieces. The spring is symmetrically sleeved on the outside of the moving tube and is provided between the fixed block and the upper fixed plate and the lower connecting plate.

[0012] By means of the above technical means, when the fixed block moves, the spring will be squeezed, and then the elastic force generated by the squeezing of the spring will serve as the restoring force for the fixed block.

[0013] As a preferred implementation, the connection holes are equidistantly arranged on the fixed sleeve, and the sealing ring can seal the connection holes.

[0014] Through the above technical means, the connecting hole is responsible for sucking in external gas and discharging internal gas.

[0015] As a preferred embodiment, the ventilation mechanism further includes ventilation holes, which are symmetrically and equidistantly arranged on the movable tube, and a sealing plate is fixedly connected to one end of the movable tube and located above the upper fixed plate.

[0016] Through the above technical means, the two vents are arranged near the upper fixed plate and the lower connecting plate, so that when the movable tube moves inward, the sealing ring will also move together, thereby exposing the connecting hole, and the gas flowing into the connecting hole can enter the storage tank through the vent. Conversely, the movable tube will discharge the internal gas through the vent and discharge it through the connecting hole, thereby ensuring pressure coordination.

[0017] As a preferred implementation, a connecting flange is fixedly connected to one end of the moving pipe below the lower connecting plate.

[0018] Through the above technical means, the connecting flange is annular.

[0019] As a preferred implementation, the connecting flange is connected to the moving disk via screws.

[0020] Through the above technical means, the movable plate is arranged inside the storage tank. Relying on its own characteristics, when negative pressure or positive pressure is formed inside the storage tank, it drives the movable tube to move according to the different pressures, and the movable plate is also an annular structure.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] The utility model installs the valve body on the storage tank, and then the air permeable mechanism can be adjusted according to the internal air pressure of the storage tank. When the internal air pressure of the storage tank is high, the air permeable mechanism will slide outwards due to the influence of the air pressure, so that the air permeable end in the air permeable mechanism is exposed, thereby achieving the air permeability effect; when the internal air pressure of the storage tank is low, the air permeable mechanism will move inwards due to the influence of the air pressure, so that the other air permeable end is exposed, thereby achieving the air intake effect. Through the above-mentioned technical means, the air intake or exhaust operation can be performed automatically according to the internal air pressure of the storage tank. Compared with the transmission electric control air permeable valve, it is more environmentally friendly, does not require other auxiliary equipment, and has a lower cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a first isometric view of the utility model;

[0024] Figure 2 It is a second isometric view of the utility model;

[0025] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0026] Figure 4 It is an isometric view of the utility model in a disassembled state.

[0027] Legend: 1. Upper fixed plate; 2. Lower connecting plate; 3. Fixed sleeve; 4. Moving tube; 5. Fixed block; 6. Sealing ring; 7. Spring; 8. Connecting hole; 9. Vent hole; 10. Sealing plate; 11. Connecting flange; 12. Moving disk. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] Example

[0031] like Figure 1-Figure 4As shown, the utility model provides a petroleum storage tank vent valve: comprising a valve body and a vent mechanism, the valve body is used to be installed on the storage tank, the vent mechanism is arranged on the valve body, and the vent mechanism is used to adjust according to the air pressure inside the storage tank to ensure the air pressure and temperature inside the storage tank;

[0032] The valve body is composed of an upper fixing plate 1, a lower connecting plate 2 and a fixing sleeve 3. The upper fixing plate 1 and the lower connecting plate 2 are arranged in parallel up and down, and the fixing sleeve 3 is fixedly connected between the upper fixing plate 1 and the lower connecting plate 2.

[0033] To sum up: the valve body is installed on the storage tank, and then the breathable mechanism can be adjusted according to the internal air pressure of the storage tank. When the internal air pressure of the storage tank is high, the breathable mechanism will slide outwards due to the influence of the air pressure, so that the breathable end in the breathable mechanism is exposed, thereby achieving the effect of ventilation; and when the internal air pressure of the storage tank is low, the breathable mechanism will move inwards due to the influence of the air pressure, so that the other breathable end is exposed, thereby achieving the air intake effect.

[0034] The ventilation mechanism includes a moving tube 4, a fixed block 5 and a sealing ring 6. The moving tube 4 is arranged inside the fixed sleeve 3. The upper and lower ends of the moving tube 4 extend to the outside of the upper fixed plate 1 and the lower connecting plate 2 respectively. The fixed block 5 is fixedly connected to the outside of the moving tube 4 and is located outside the fixed sleeve 3. The sealing ring 6 is fixedly connected to the outside of the fixed block 5. The sealing ring 6 contacts the inner wall of the fixed sleeve 3.

[0035] In summary, the sealing ring 6 can be moved inside the fixed sleeve 3 through the moving tube 4 .

[0036] The ventilation mechanism further includes a spring 7 and a connecting hole 8. The spring 7 is provided in two pieces. The spring 7 is symmetrically sleeved on the outside of the moving tube 4 and arranged between the fixing block 5 and the upper fixing plate 1 and the lower connecting plate 2.

[0037] In summary, when the fixing block 5 moves, it will squeeze the spring 7, and then the elastic force generated by the squeezing of the spring 7 serves as the restoring force for the fixing block 5.

[0038] The connection holes 8 are equidistantly arranged on the fixed sleeve 3, and the sealing ring 6 can seal the connection holes 8;

[0039] In summary: the connecting hole 8 is responsible for sucking in external gas and discharging internal gas.

[0040] The ventilation mechanism further includes ventilation holes 9, which are symmetrically and equidistantly arranged on the moving tube 4. A sealing plate 10 is fixedly connected to one end of the moving tube 4 and located above the upper fixed plate 1.

[0041] To sum up: the two vent holes 9 are both arranged near the upper fixed plate 1 and the lower connecting plate 2, so that when the movable tube 4 moves inward, the sealing ring 6 will also move together, thereby exposing the connecting hole 8, and the gas flowing into the connecting hole 8 can enter the interior of the storage tank through the vent hole 9, conversely, the movable tube 4 will discharge the internal gas through the vent hole 9 and discharge it through the connecting hole 8, thereby ensuring pressure coordination.

[0042] A connecting flange 11 is fixedly connected to one end of the moving pipe 4 and is located below the lower connecting plate 2;

[0043] In summary: the connecting flange 11 is annular.

[0044] The connecting flange 11 is connected to the moving plate 12 by screws;

[0045] In summary: the movable plate 12 is arranged inside the storage tank, and relies on its own characteristics to drive the movable tube 4 to move according to the difference in pressure when negative pressure or positive pressure is formed inside the storage tank, and the movable plate 12 is also an annular structure.

[0046] Working principle:

[0047] First, install the valve body on the storage tank, and then place the movable disk 12 inside the storage tank and connect it to the connecting flange 11. The movable disk 12 can rely on its own characteristics to drive the movable tube 4 to move according to the pressure when negative pressure or positive pressure is formed inside the storage tank. When the movable tube 4 moves inward, the sealing ring 6 will also move together, thereby exposing the connecting hole 8. The gas flowing into the connecting hole 8 can enter the storage tank through the vent 9. Conversely, the movable tube 4 will discharge the internal gas through the vent 9 and then discharge it through the connecting hole 8, thereby ensuring pressure coordination.

[0048] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vent valve for a petroleum storage tank, comprising a valve body and a vent mechanism, characterized in that: The valve body is used to be installed on the storage tank, and the air permeability mechanism is arranged on the valve body, and the air permeability mechanism is used to adjust according to the air pressure inside the storage tank to ensure the air pressure and temperature inside the storage tank; The valve body is composed of an upper fixing plate (1), a lower connecting plate (2) and a fixing sleeve (3); the upper fixing plate (1) and the lower connecting plate (2) are arranged in parallel up and down; and the fixing sleeve (3) is fixedly connected between the upper fixing plate (1) and the lower connecting plate (2).

2. The oil storage tank vent valve according to claim 1, characterized in that: The ventilation mechanism comprises a movable tube (4), a fixed block (5) and a sealing ring (6); the movable tube (4) is arranged inside the fixed sleeve (3); the upper and lower ends of the movable tube (4) respectively extend to the outside of the upper fixed plate (1) and the lower connecting plate (2); the fixed block (5) is fixedly connected to the outside of the movable tube (4) and is located outside the fixed sleeve (3); the sealing ring (6) is fixedly connected to the outside of the fixed block (5); and the sealing ring (6) is in contact with the inner wall of the fixed sleeve (3).

3. The oil tank vent valve according to claim 2 is characterized in that: The ventilation mechanism further comprises a spring (7) and a connecting hole (8). The spring (7) is provided in two pieces. The spring (7) is symmetrically sleeved on the outside of the moving tube (4) and arranged between the fixed block (5), the upper fixed plate (1) and the lower connecting plate (2).

4. The oil tank vent valve according to claim 3 is characterized in that: The connection holes (8) are arranged at equal distances on the fixed sleeve (3), and the sealing ring (6) can seal the connection holes (8).

5. The oil storage tank vent valve according to claim 1, characterized in that: The ventilation mechanism further comprises ventilation holes (9), which are symmetrically and equidistantly arranged on the movable tube (4), and a sealing plate (10) is fixedly connected to one end of the movable tube (4) and located above the upper fixed plate (1).

6. The oil tank vent valve according to claim 4, characterized in that: A connecting flange (11) is fixedly connected to one end of the moving pipe (4) and is located below the lower connecting plate (2).

7. The oil tank vent valve according to claim 6, characterized in that: The connecting flange (11) is connected to a moving plate (12) via screws.

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