Mist catching and liquid blocking device of safety accessory of liquid storage tank

Abstract

The invention relates to the technical field of liquid storage tanks, in particular to a liquid storage tank safety accessory mist catching and liquid blocking device which comprises a mounting cylinder, a connecting flange, a corrugated plate set, a silk screen set and a baffle plate set. The mounting cylinder is of a vertically-through cylinder structure, and the corrugated plate set, the silk screen set and the baffle plate set are sequentially and fixedly mounted in the mounting cylinder from bottom to top; a vertically-through overflowing channel is formed between every two adjacent corrugated plates. The liquid storage tank is reasonable in structure, when medium steam passes through the liquid storage tank, the medium steam exchanges heat with the corrugated plate, the silk screen, the left baffle plate and the right baffle plate to be condensed, and condensed water drops can flow back into the liquid storage tank, so that the content of steam carried by gas entering the safety accessory of the liquid storage tank is greatly reduced, and the safety accessory of the liquid storage tank is protected. The accumulation of condensed water in the fire retardant core, the mechanical breather valve and the hydraulic safety valve is reduced, the freezing and blocking conditions of the safety accessory of the liquid storage tank are avoided, and the safety accessory of the liquid storage tank can play a normal protection role in winter.

Description

Technical Field

[0001] The invention relates to the technical field of liquid storage tanks and is a fog catching and liquid blocking device which is a safety accessory of a liquid storage tank. Background Art

[0002] Liquid storage tanks are containers for storing various types of oil and liquid media in the petroleum and petrochemical industry. They are high-risk devices in the industry. Mechanical breathing valves and hydraulic safety valve flame arresters are important safety accessories for liquid storage tanks. They are used to adjust and maintain the pressure balance in the tank by exchanging airflow inside and outside the tank. The lowest winter temperature in the area under the jurisdiction of Xinjiang Oilfield is minus 45°C. The medium temperature in the liquid storage tank in the thin oil production area is generally between 25°C and 65°C due to different working conditions. The temperature difference between the inside and outside of the liquid storage tank is large. The gas separated from the medium in the liquid storage tank contains a large amount of steam that condenses and accumulates in the safety accessories, which causes frost, ice, freezing and other phenomena on the safety accessories, which in turn causes the protection performance of the safety accessories to fail. The storage tank has a major safety hazard of exceeding the positive and negative pressure limits. Summary of the invention

[0003] The present invention provides a mist catching and liquid blocking device for a safety accessory of a liquid storage tank, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that when the temperature difference between the inside and outside of the liquid storage tank is large, the steam separated from the medium in the liquid storage tank is easily condensed and accumulated in the safety accessory of the liquid storage tank, thereby causing the safety accessory to be frozen and blocked, thereby causing the protection performance of the safety accessory to fail.

[0004] The technical solution of the present invention is achieved through the following measures: a liquid storage tank safety accessory fog catching and liquid blocking device, including a mounting cylinder, a connecting flange, a corrugated plate group, a wire mesh group and a baffle group, the mounting cylinder is a cylinder structure that penetrates from top to bottom, and the corrugated plate group, the wire mesh group and the baffle group are fixedly installed in the mounting cylinder from bottom to top in sequence; the corrugated plate group includes a plurality of corrugated plates spaced apart from each other, the corrugated plates include crests convex to the right and troughs concave to the left, the crests and troughs are arranged alternately, the crests of the left corrugated plate and the crests of the right corrugated plate of each adjacent two corrugated plates are arranged close to each other from left to right, and each adjacent The troughs of the left corrugated plate and the right corrugated plate of the two corrugated plates are arranged close to each other on the left and right, and a flow channel that passes through from top to bottom is formed between every two adjacent corrugated plates; the wire mesh group includes a plurality of wire meshes that are arranged at intervals up and down and laid horizontally; the baffle group includes a left baffle and a right baffle that are alternately arranged from top to bottom, the left baffle is an inclined plate structure that is inclined from left to right and from top to bottom, and the right baffle is an inclined plate structure that is inclined from left to right and from bottom to top, and the right end of the left baffle is located on the right side of the left end of the right baffle and is close to the right baffle; a connecting flange is provided on the top of the mounting cylinder, and a pressure gauge is provided on the connecting flange.

[0005] The following are further optimizations and / or improvements to the above invention: The installation cylinder can be a stainless steel cylinder, the corrugated plate, the left baffle plate and the right baffle plate are all metal plates, and the wire mesh is a stainless steel wire mesh.

[0006] The connecting flange may be provided with a pressure gauge.

[0007] The distance between the two adjacent corrugated plates can be 2.5 mm to 5 mm.

[0008] The distance between the right end of the left baffle and the right baffle may be 5 mm to 10 mm.

[0009] The present invention has a reasonable structure. When the medium steam passes through the present invention, the medium steam first exchanges heat with the corrugated plate, the wire mesh, the left baffle plate and the right baffle plate to condense, and the condensed water droplets can flow back into the liquid storage tank, thereby greatly reducing the steam content carried by the gas entering the safety accessories of the liquid storage tank, reducing the accumulation of condensed water in the fire-retardant core and the mechanical breathing valve and the hydraulic safety valve, avoiding the occurrence of freezing and blockage of the safety accessories of the liquid storage tank, and ensuring that the safety accessories of the liquid storage tank can exert normal protective performance in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 It is a schematic diagram of the main cross-sectional structure of the best embodiment of the present invention.

[0011] Attached Figure 2 This is a schematic diagram of the partial cross-sectional structure of the best embodiment of the present invention when it is installed between the top wall of the liquid storage tank and the flame arrester of the mechanical breathing valve.

[0012] The codes in the accompanying drawings are: 1 is the installation cylinder, 2 is the connecting flange, 3 is the corrugated plate, 4 is the wire mesh, 5 is the flow channel, 6 is the left baffle, 7 is the right baffle, 8 is the pressure gauge, 9 is the top wall of the liquid storage tank, and 10 is the mechanical breathing valve flame arrester. DETAILED DESCRIPTION

[0013] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0014] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0015] The present invention will be further described below in conjunction with embodiments and drawings: As attached Figure 1-2As shown, the mist-catching and liquid-blocking device of the liquid storage tank safety accessory comprises a mounting cylinder 1, a connecting flange 2, a corrugated plate group, a wire mesh group and a baffle group. The mounting cylinder 1 is a cylinder structure that is through-through from top to bottom. The corrugated plate group, the wire mesh group and the baffle group are fixedly installed in the mounting cylinder 1 from bottom to top in sequence; the corrugated plate group comprises a plurality of corrugated plates 3 that are spaced apart from each other on the left and right, the corrugated plates 3 comprise wave crests that bulge to the right and wave troughs that are sunken to the left, the wave crests and the wave troughs are alternately arranged, the wave crests of the left-side corrugated plate 3 and the wave crests of the right-side corrugated plate 3 of each adjacent two corrugated plates 3 are arranged close to each other on the left and right, and the wave crests of the right-side corrugated plate 3 of each adjacent two corrugated plates 3 are arranged close to each other on the left and right. The troughs of the left corrugated plate 3 and the troughs of the right corrugated plate 3 are arranged close to each other on the left and right sides, and a flow channel 5 that passes through from top to bottom is formed between every two adjacent corrugated plates 3; the wire mesh group includes a plurality of wire meshes 4 that are arranged at intervals up and down and laid horizontally; the baffle group includes a left baffle 6 and a right baffle 7 that are alternately arranged from top to bottom, the left baffle 6 is an inclined plate structure that is inclined from left to right and from top to bottom, and the right baffle 7 is an inclined plate structure that is inclined from left to right and from bottom to top, and the right end of the left baffle 6 is located on the right side of the left end of the right baffle 7 and is close to the right baffle 7; a connecting flange 2 is provided on the top of the mounting cylinder 1.

[0016] The corrugated plate 3, the wire mesh 4, the left baffle plate 6 and the right baffle plate 7 are all fixedly installed in the installation cylinder 1. Specifically, the front and rear ends of each corrugated plate 3 are fixedly connected to the inner wall of the installation cylinder 1. The baffle plate group includes two left baffle plates 6 and two right baffle plates 7. The left end of the left baffle plate 6 and the right end of the right baffle plate 7 are respectively fixedly connected to the inner wall of the installation cylinder 1. When in use, the installation cylinder 1 is fixedly installed on the top wall 9 of the liquid storage tank, and the connecting flange 2 is fixedly connected to the flange of the mechanical breathing valve flame arrester 10 or the flange of the hydraulic safety valve flame arrester. After winter, the temperature difference between the inside and outside of the liquid storage tank is large. At this time, the temperature of the installation cylinder 1, the corrugated plate 3, the wire mesh 4, the left baffle plate 6 and the right baffle plate 7 is lower than the temperature of the medium in the liquid storage tank. When the steam separated from the medium in the liquid storage tank enters the installation cylinder 1, the steam first passes through the left and right baffle plates that are close to each other. The corrugated flow channel 5 formed by the close-fitting corrugated plates 3 has a long steam travel distance and a large heat exchange area between the steam and the corrugated plates 3, which is conducive to the condensation of steam into water droplets on the surface of the corrugated plates 3; and when the steam passes through the horizontally laid wire mesh 4, the densely distributed wire mesh 4 holes in the wire mesh 4 are equivalent to flow holes, and similarly, the heat exchange area between the steam and the wire mesh 4 is large, which is conducive to the condensation of steam into water droplets on the surface of the wire mesh 4; and when the steam flows to the position of the baffle group, since the right end of the left baffle 6 is located to the right side of the left end of the right baffle 7 and is close to the right baffle 7, the rising steam will first collide with the lower surface of the left baffle 6 and the lower surface of the right baffle 7, and then flow through the gap between the right end of the left baffle 6 and the right baffle 7 and pass between the left baffle 6 and the right baffle 7, thereby facilitating the condensation of steam into water droplets on the lower surface of the left baffle 6 and the lower surface of the right baffle 7. The present application can promote the condensation of medium vapor, and the condensed water droplets flow back into the liquid storage tank, thereby greatly reducing the vapor content carried by the gas entering the safety accessories of the liquid storage tank, reducing the accumulation of condensed water in the flame arrester core, mechanical breathing valve, and hydraulic safety valve, avoiding the occurrence of freezing and blockage of the safety accessories of the liquid storage tank, and ensuring that the safety accessories of the liquid storage tank can perform normal protective performance in winter. There is no need to manually disassemble the safety accessories for inspection every week to avoid freezing and blockage of the safety accessories, which greatly reduces the labor intensity of employees and reduces labor costs.

[0017] The above embodiments may be further optimized and / or improved according to actual needs: As attached Figure 1 As shown, the installation cylinder 1 is a stainless steel cylinder, the corrugated plate 3, the left baffle plate 6 and the right baffle plate 7 are all metal plates, and the wire mesh 4 is a stainless steel wire mesh 4. Therefore, the heat conductivity between the components of the present application is good, which is conducive to heat exchange with the medium steam.

[0018] As attached Figure 1 As shown, a pressure gauge 8 is provided on the connecting flange 2. Specifically, a pressure conduction hole that penetrates inside and outside is opened on the side wall of the connecting flange 2, and a conduit of the pressure gauge 8 is threadedly connected to the pressure conduction hole. By providing the pressure gauge 8, the working conditions of the liquid storage tank and the safety accessories can be timely grasped, which is conducive to ensuring the safe operation of the oilfield liquid storage tank.

[0019] Preferably, the distance between two adjacent corrugated plates 3 is 2.5 mm to 5 mm; the distance between the right end of the left baffle plate 6 and the right baffle plate 7 is 5 mm to 10 mm. Specifically, in this embodiment, the distance between two adjacent corrugated plates 3 is 2.5 mm; the distance between the right end of the left baffle plate 6 and the right baffle plate 7 is 5 mm, so that the heat exchange area between the steam and the corrugated plates 3, the left baffle plate 6, and the right baffle plate 7 is large, which is conducive to the condensation of steam inside the present application.

[0020] The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A liquid storage tank safety accessory fog catching and liquid blocking device, characterized in that It includes an installation cylinder, a connecting flange, a corrugated plate group, a wire mesh group and a baffle group. The installation cylinder is a cylinder structure that is connected from top to bottom. The corrugated plate group, the wire mesh group and the baffle group are fixedly installed in the installation cylinder from bottom to top in sequence; the corrugated plate group includes a plurality of corrugated plates spaced apart from left to right, the corrugated plate includes a wave crest convex to the right and a wave trough concave to the left, the wave crests and the wave troughs are arranged alternately, the wave crests of the left corrugated plate and the wave crests of the right corrugated plate of each adjacent two corrugated plates are arranged close to each other from left to right, and the wave crests of the left corrugated plate of each adjacent two corrugated plates are arranged close to each other from left to right. The troughs and the troughs of the right corrugated plate are arranged close to each other on the left and right, and a flow channel that passes through from top to bottom is formed between every two adjacent corrugated plates; the wire mesh group includes a plurality of wire meshes that are arranged at intervals up and down and laid horizontally; the baffle group includes a left baffle and a right baffle that are alternately arranged from top to bottom, the left baffle is an inclined plate structure that is inclined from left to right and from top to bottom, and the right baffle is an inclined plate structure that is inclined from left to right and from bottom to top, and the right end of the left baffle is located on the right side of the left end of the right baffle and is close to the right baffle; a connecting flange is provided on the top of the mounting cylinder.

2. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 1 is characterized in that The installation cylinder is a stainless steel cylinder, the corrugated plate, the left baffle plate and the right baffle plate are all metal plates, and the wire mesh is a stainless steel wire mesh.

3. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 1 or 2, characterized in that A pressure gauge is provided on the connecting flange.

4. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 1 or 2, characterized in that The distance between two adjacent corrugated plates is 2.5 mm to 5 mm.

5. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 3 is characterized in that The distance between two adjacent corrugated plates is 2.5 mm to 5 mm.

6. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 1, 2 or 5, characterized in that The distance between the right end of the left baffle and the right baffle is 5 mm to 10 mm.

7. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 3 is characterized in that The distance between the right end of the left baffle and the right baffle is 5 mm to 10 mm.

8. The mist catching and liquid blocking device for a liquid storage tank safety accessory according to claim 4 is characterized in that The distance between the right end of the left baffle and the right baffle is 5 mm to 10 mm.

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