Tower plate structure for rectifying petrochemical fluid raw materials

Abstract

The utility model discloses a tower plate structure for rectifying petrochemical fluid raw materials, which comprises a tower plate body horizontally mounted in a rectifying tower, a through hole penetrating up and down is formed in the tower plate body, a sealing valve cover covering the through hole is arranged on the upper surface of the tower plate body, an upper supporting spring is arranged between the sealing valve cover and the tower plate body, and a lower supporting spring is arranged between the upper supporting spring and the tower plate body. The upper and lower ends of the upper supporting spring are fixedly connected with the top of the inner wall of the sealing valve cover and the upper surface of the tower plate body respectively; guide columns are vertically arranged in the through holes and fixedly connected with the inner walls of the through holes through fixing rods on the surfaces of the guide columns. The sealing valve cover is arranged above the through hole, the guide column is vertically arranged in the through hole, the positioning clamping plate vertically connected with the surface of the guide column in a sliding mode is used for guiding the sealing valve cover, the contact area of the positioning clamping plate and the guide column is small, friction force is small, the sealing valve cover is jacked up by gas and moves vertically, the sealing valve cover is not prone to being clamped, and the opening range is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a tower plate structure for distillation of petrochemical fluid raw materials. Background Art

[0002] A distillation tower is a commonly used large-scale chemical equipment that plays a vital role in the field of petrochemical processing. The tower plate, as the main component of the plate distillation tower, is used to bring several fluids into close contact and exchange mass between the two phases to achieve the purpose of separating the components of a liquid mixture or a gas mixture. It is generally a circular plate with many through holes and is equipped with parts that promote close contact between the two fluids. Common ones include bubble cap tower plates, float valve tower plates, floating tongue tower plates, etc.

[0003] The float valves of common float valve trays are movably mounted within the through-holes. Increased air pressure below pushes the valves upward, allowing gas to flow upward. However, most existing float valves are mounted directly within the through-holes without any guiding mechanism. As a result, the thrust of gas flow on the float valves cannot be guaranteed to be perfectly vertical and upward. If the float valves are pushed obliquely by the gas flow, they can easily become stuck within the through-holes, resulting in insufficient opening and hindering gas flow, a significant drawback. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a tower plate structure for the distillation of petrochemical fluid raw materials, which is used to solve the problem that the valve body of the existing floating valve tower plate is directly installed in the through hole without any guiding measures, resulting in insufficient opening range affecting the passage of gas.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A tray structure for distilling petrochemical fluid raw materials, comprising a tray body mounted horizontally within a distillation tower, the tray body being provided with a through hole extending vertically therethrough, a sealing valve cover provided on the upper surface of the tray body and covering the through hole, an upper support spring provided between the sealing valve cover and the tray body, the upper and lower ends of the upper support spring being fixedly connected to the top of the inner wall of the sealing valve cover and the upper surface of the tray body, respectively;

[0007] A guide post is vertically arranged in the through hole, and the guide post is fixedly connected to the inner wall of the through hole through a fixing rod on the surface. A plurality of L-shaped positioning clamps that pass through the through hole from top to bottom are vertically fixedly connected to the top of the inner wall of the sealing valve cover. The positioning clamps are equidistantly arranged along the circumference of the guide post and are slidably connected to the surface of the guide post.

[0008] A lower support spring is movably sleeved on the exterior of several positioning clamps. The upper and lower ends of the lower support spring are respectively supported on the lower surface of the tower plate body and the upper surface of the horizontal part of the lower end of the positioning clamp.

[0009] Preferably, the through hole is a circular hole, the sealing valve cover is a circular cover, and the sealing valve cover, the upper support spring, the guide column and the lower support spring are all coaxially arranged with the through hole.

[0010] Preferably, the upper support spring and the lower support spring have the same shape and size, and the upper support spring is adapted to the size of the sealing valve cover.

[0011] Preferably, each guide column corresponds to three or four positioning clamps.

[0012] Preferably, the fixing rod and the positioning clamping plate are staggered.

[0013] Preferably, the side of the positioning clamp corresponding to the guide column is a wedge-shaped structure.

[0014] Preferably, a positioning slot is provided on the upper surface of the horizontal portion of the lower end of the positioning card plate at a position corresponding to the lower support spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The utility model provides a sealing valve cover above the through hole, a guide column is vertically arranged in the through hole, and the sealing valve cover is guided by a positioning clamping plate that is vertically slidably connected to the surface of the guide column. The contact area between the positioning clamping plate and the guide column is small, and the friction force is small, so that the sealing valve cover is lifted up by the gas and moves vertically without being stuck, thereby avoiding affecting the opening range. The utility model solves the problem that the valve body of the existing floating valve tower plate is directly installed in the through hole without any guiding measures, resulting in insufficient opening range that affects the passage of gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the distribution structure of the tray body of the utility model;

[0018] Figure 2 This is a front cross-sectional view of the tray body of the utility model;

[0019] Figure 3 This is a top view of the tray body of the utility model;

[0020] Figure 4 For this utility model Figure 1 A magnified view of the local structure at the corresponding position of the middle sealing valve cover;

[0021] Figure 5 For this utility model Figure 2 A magnified view of the local structure at the corresponding position of the middle sealing valve cover;

[0022] Figure 6 This is a top view of the guide column, fixing rod and positioning clamping plate of the utility model.

[0023] In the figure: 1. distillation tower; 2. tower plate body; 201. through hole; 3. sealing valve cover; 4. upper support spring; 5. guide column; 6. fixing rod; 7. positioning clamping plate; 701. positioning slot; 8. lower support spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-6 As shown, the utility model provides a technical solution: a tray structure for distillation of petrochemical fluid raw materials, comprising a tray body 2 horizontally installed in a distillation tower 1, the tray body 2 being provided with a through hole 201 extending vertically therethrough, a sealing valve cover 3 being provided on the upper surface of the tray body 2 and covering the through hole 201, an upper support spring 4 being provided between the sealing valve cover 3 and the tray body 2, the upper and lower ends of the upper support spring 4 being fixedly connected to the top of the inner wall of the sealing valve cover 3 and the upper surface of the tray body 2, respectively, and the size of the upper support spring 4 being adapted to the size of the sealing valve cover 3;

[0026] A guide post 5 is vertically arranged in the through hole 201, and the guide post 5 is fixedly connected to the inner wall of the through hole 201 through a fixing rod 6 on the surface. A plurality of L-shaped positioning clamps 7 that pass through the through hole 201 from top to bottom are vertically fixedly connected to the top of the inner wall of the sealing valve cover 3. The fixing rod 6 and the positioning clamps 7 are staggered. The side of the positioning clamp 7 corresponding to the guide post 5 is a wedge-shaped structure. The positioning clamps 7 are equidistantly arranged along the circumference of the guide post 5 and are slidably connected to the surface of the guide post 5. Each guide post 5 corresponds to three or four positioning clamps 7;

[0027] A lower support spring 8 is movably sleeved on the outside of several positioning clamps 7. The upper support spring 4 and the lower support spring 8 have the same shape and size. The through hole 201 is a circular hole, and the sealing valve cover 3 is a round cover. The sealing valve cover 3, the upper support spring 4, the guide column 5 and the lower support spring 8 are all coaxially arranged with the through hole 201. The upper and lower ends of the lower support spring 8 are respectively supported on the lower surface of the tower plate body 2 and the upper surface of the horizontal part of the lower end of the positioning clamp 7. A positioning groove 701 is provided on the upper surface of the horizontal part of the lower end of the positioning clamp 7 corresponding to the position of the lower support spring 8.

[0028] Working principle:

[0029] The sealing valve cover 3 is squeezed by the gas below the tower plate body 2, and moves vertically upward under the vertical guidance of the positioning card plate 7 and the guide column 5, so that the gas with higher pressure below the tower plate body 2 flows through the through hole 201 to the space above the tower plate body 2. During this process, the lower support spring 8 and the upper support spring 4 respectively support the positioning card plate 7 and pull the sealing valve cover 3, so that a certain air pressure threshold is required to open the sealing valve cover 3, which helps to ensure full contact of the petrochemical fluid in the distillation tower before the air pressure is insufficient; after the sealing valve cover 3 moves upward to open, the upper support spring 4 is stretched and the lower support spring 8 is compressed, which helps to prompt the sealing cover plate 3 to move downward to cover the through hole 201 on the tower plate body 2 after the air pressure below the tower plate body 2 drops to achieve re-sealing.

[0030] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tray structure for distilling petrochemical fluid raw materials, comprising a tray body (2) installed horizontally in a distillation tower (1), wherein the tray body (2) is provided with a through hole (201) extending vertically therethrough, and characterized in that: The upper surface of the tray body (2) is provided with a sealing valve cover (3) covering the through hole (201), an upper support spring (4) is provided between the sealing valve cover (3) and the tray body (2), and the upper and lower ends of the upper support spring (4) are fixedly connected to the top of the inner wall of the sealing valve cover (3) and the upper surface of the tray body (2), respectively; A guide post (5) is vertically arranged in the through hole (201), and the guide post (5) is fixedly connected to the inner wall of the through hole (201) via a fixing rod (6) on the surface. A plurality of L-shaped positioning clamps (7) that pass through the through hole (201) are vertically fixedly connected to the top of the inner wall of the sealing valve cover (3), and the positioning clamps (7) are equidistantly arranged along the circumference of the guide post (5) and are slidably connected to the surface of the guide post (5); A plurality of positioning clamps (7) are movably sleeved on the outside of a lower support spring (8), and the upper and lower ends of the lower support spring (8) are respectively supported on the lower surface of the tower plate body (2) and the upper surface of the horizontal portion of the lower end of the positioning clamp (7).

2. The tray structure for distillation of petrochemical fluid raw materials according to claim 1, characterized in that: The through hole (201) is a circular hole, the sealing valve cover (3) is a circular cover, and the sealing valve cover (3), the upper support spring (4), the guide column (5) and the lower support spring (8) are all coaxially arranged with the through hole (201).

3. The tray structure for distillation of petrochemical fluid raw materials according to claim 1, characterized in that: The upper support spring (4) and the lower support spring (8) have the same shape and size, and the upper support spring (4) is adapted to the size of the sealing valve cover (3).

4. The tray structure for distillation of petrochemical fluid raw materials according to claim 1, characterized in that: Each guide column (5) corresponds to three or four positioning clamping plates (7).

5. The tray structure for distillation of petrochemical fluid raw materials according to claim 1, characterized in that: The fixing rod (6) and the positioning clamping plate (7) are arranged in a staggered manner.

6. The tray structure for distillation of petrochemical fluid raw materials according to claim 1, characterized in that: The side of the positioning clamping plate (7) corresponding to the guide pillar (5) is a wedge-shaped structure.

7. The tray structure for distillation of petrochemical fluid raw materials according to claim 1, characterized in that: A positioning slot (701) is provided on the upper surface of the horizontal portion of the lower end of the positioning clamping plate (7) at a position corresponding to the lower support spring (8).

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