CN220237897U - Wave type sieve plate of low-pressure separator - Google Patents

Abstract

The utility model discloses a wave type sieve plate of a low-pressure separator, which comprises a round table and a sieve plate; the round table is in a cylindrical shape, and the sieve plate is arranged at the top of the round table; the center of the sieve plate is provided with a concave part, and a third end point at the bottom of the concave part is used as a circle center, and the top of the outer side in the circumferential direction extends to form a concave cambered surface; the periphery of the concave part extends outwards to form a convex part, the convex part is provided with a convex cambered surface, the concave cambered surface is connected with the convex cambered surface to form a wave-shaped screen plate top surface, and the screen plate top surface faces the direction of the inner top of the low-pressure separator; the round table and the sieve plate are provided with sieve holes. Because be equipped with concave part and bellying on the sieve for the sieve face is the wave, can play the effect of buffering to the liquid flow, makes the liquid flow more mild and regular, avoids liquid to receive great impact and leads to liquid droplet particle diameter to diminish, causes the problem that separation efficiency is low, makes the difficult drop of separator inner wall coating moreover, has avoided fluid viscosity to remain on the separator inner wall, improves the separation efficiency of separator.

Description

Wave type sieve plate of low-pressure separator

Technical Field

The utility model relates to the technical field of sieve plates of low-pressure separators, in particular to a wave-type sieve plate of a low-pressure separator.

Background

The low-pressure separator is mainly applied to the fields of chemical industry, petroleum, machinery and the like. The low-pressure separator separates the gas phase from the liquid phase in the material coming from the cold high-pressure separator in the last step in the production process, namely, the gas phase and the liquid phase are separated immediately in the space of a container under certain temperature and pressure after the material is decompressed, and the corresponding gas phase and liquid phase products are obtained. The traditional oil-gas separation mode comprises centrifugal separation, skimming, electrochemistry, air flotation, biological treatment and other methods, but most of the traditional separation methods have the problems of complicated operation process, high cost, limited adaptability, incomplete separation and the like.

At present, a large number of baffle plate low-pressure separators and regular cylindrical sieve plate low-pressure separators are used in engineering, but because the low-pressure separators are large in equipment volume and high in height, the baffle plates are arranged on the inner wall of the low-pressure separators, so that turbulent kinetic energy of fluid in a shell can be increased, and the problems of easy falling of an inner wall coating, poor separation efficiency and the like in the low-pressure separators are caused; the use of regular cylindrical screen plates may cause fluid to stick and remain on the walls of the low pressure separator, thereby affecting the separation efficiency of the low pressure separator.

Therefore, the design of the sieve plate is very necessary to prevent the coating on the inner wall of the separator from falling off, ensure the separation efficiency and prevent the fluid from remaining on the wall surface of the low-pressure separator.

Disclosure of Invention

The present utility model provides a low pressure separator corrugated screen deck to overcome the above problems.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

a wave type sieve plate of a low-pressure separator comprises a round table and a sieve plate;

the round table is in a cylindrical shape, and the sieve plate is arranged at the top of the round table;

the center of the sieve plate is provided with a concave part, and a third end point at the bottom of the concave part is used as a circle center, and the top of the outer side in the circumferential direction extends to form an inward concave cambered surface;

the periphery of the concave part extends outwards to form a convex part, the convex part is provided with a convex cambered surface, the concave cambered surface is connected with the convex cambered surface to form a wave-shaped sieve plate top surface, and the sieve plate top surface faces the top direction of the low-pressure separator;

the round table and the sieve plate are provided with sieve holes arranged along the vertical direction.

Further, two ends of the convex cambered surface are respectively provided with a first end and a second end, the first end is arranged at one end of the convex cambered surface far away from the concave cambered surface, the second end is arranged at one end of the convex cambered surface near the concave cambered surface, and the height of the second end in the vertical direction is higher than that of the first end in the vertical direction; a fourth end which is arranged opposite to the third end is arranged on the periphery of the concave cambered surface, and the height of the fourth end in the vertical direction is higher than that of the third end; the second end face of the convex cambered surface is connected with the fourth end face of the concave cambered surface, and the two end faces are identical in height.

Further, the bottom surface of the sieve plate connected with the round table is in a circular shape; the bottom surface area of sieve is unanimous with the top surface area of round platform, the third end point of concave portion is located on the axis of round platform.

Further, the height of the first end in the vertical direction is consistent with the height of the third end in the vertical direction.

Further, the sieve holes are uniformly distributed on the top surface of the sieve plate, and the adjacent sieve holes are equal in distance.

Further, an included angle theta is formed by taking the connection intersection point of the end face of the first end and the top face of the round table as a top angle and taking the edge on the top face of the round table and two edges which pass through the top angle and are tangent with the convex cambered surface as angles respectively;

forming an included angle beta by taking the third end point as a vertex angle and respectively taking an edge on the top surface of the round table and two edges which pass through the third end point and are tangent to the concave cambered surface as angles; the included angle theta is larger than the included angle beta.

Furthermore, the surfaces of the sieve plate and the round table are coated with anti-corrosion coatings.

The beneficial effects of the utility model are as follows:

according to the wavy sieve plate of the low-pressure separator disclosed by the utility model, due to the concave parts and the convex parts arranged on the sieve plate, the surface of the sieve plate is wavy, when liquid in the low-pressure separator passes through the sieve plate, the liquid flow can be buffered, so that the liquid flow is more gentle and regular, the problem of low separation efficiency caused by the fact that the liquid drop size is reduced due to the fact that the liquid is subjected to larger impact is avoided, the coating on the inner wall of the separator is not easy to fall off, the viscous residue of the fluid on the inner wall of the separator is avoided, and the separation efficiency of the separator is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic view of a wave-type sieve plate structure of a low-pressure separator disclosed in an embodiment of the utility model;

FIG. 2 is a front view of a low pressure separator wavy screen deck as disclosed in an embodiment of the utility model;

FIG. 3 is a cross-sectional view taken along the direction C-C in FIG. 2;

fig. 4 is a schematic view of a low pressure separator according to an embodiment of the present utility model, when a corrugated screen plate is installed inside the low pressure separator.

In the figure: 1. round bench; 2. a sieve plate; 21. a concave portion; 211. a third end; 212. a concave cambered surface; 212a, fourth end; 22. a boss; 221a, a first end; 221b, a second end; 221. a convex cambered surface; 23. the top surface of the sieve plate; 3. a low pressure separator; 4. and (5) screening holes.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-3, the wave-shaped sieve plate of the low-pressure separator provided by the embodiment comprises a round table 1 and a sieve plate 2;

the round table 1 is in a cylindrical shape, and the sieve plate 2 is arranged at the top of the round table 1;

the center of the screen plate 2 is provided with a concave part 21, and a concave cambered surface 212 is formed by taking the end point of a third end 211 at the bottom of the concave part 21 as the center of a circle and extending to the top outside in the circumferential direction;

the periphery of the concave part 21 extends outwards to form a convex part 22, the convex part is provided with a convex cambered surface 221, the concave cambered surface 212 is connected with the convex cambered surface 221 to form a wave-shaped sieve plate top surface 23, and the sieve plate top surface 23 faces to the top direction of the low-pressure separator 3; the liquid firstly passes through the sieve plate and then falls back to contact the top surface 23 of the sieve plate, the wavy top surface of the sieve plate buffers the liquid, liquid drops are prevented from being impacted into small drops, and the separation effect is reduced;

the round table 1 and the sieve plate 2 are respectively provided with sieve holes 4 arranged along the vertical direction; the wave-shaped sieve plate of the low-pressure separator is arranged in the low-pressure separator cylinder body, so that a region for filtering and volatilizing gas-liquid two phases is formed in the cylinder body, the flow of liquid in the low-pressure separator cylinder body is more gentle and regular, and the comprehensive performance of the low-pressure separator is improved; the diameter design of the sieve plate is adapted to the size of the shell of the low-pressure separator, in the embodiment, the installation height of the sieve plate is 1220mm, and the sieve plate is schematically shown in fig. 4 to be installed in the low-pressure separator; the round table 1 and the sieve plate 2 are designed integrally.

According to the wavy sieve plate of the low-pressure separator disclosed by the utility model, as the concave part and the convex part are arranged on the sieve plate, the top surface of the sieve plate is wavy, and because certain fluctuation exists in liquid in the low-pressure separator, the liquid can surge the sieve plate and fall back to contact with the wavy top surface of the sieve plate due to self gravity, the top surface of the sieve plate can play a role in buffering the flowing of the liquid, so that the flowing of the liquid is more gentle and regular, the problems that the particle size of liquid drops is reduced and the separation efficiency is low due to the fact that the liquid is subjected to larger impact are avoided, and the coating on the inner wall of the separator is not easy to fall off and the separation efficiency of the separator is improved; in addition, compare in columniform plane sieve, this sieve is because the sieve top surface designs to be the wave, consequently the resistance to liquid is little relatively, can effectively reduce liquid viscosity and remain the problem on the separator inner wall to further promote low pressure separator's comprehensive separation performance, improve the adaptability of equipment to complicated operating mode.

In a specific embodiment, a first end 221a and a second end 221b are respectively disposed at two ends of the protruding cambered surface 221, the first end 221a is disposed at one end of the protruding cambered surface 221 away from the concave cambered surface 212, the second end 221b is disposed at one end of the protruding cambered surface 221 close to the concave cambered surface 212, and the height of the second end 221b in the vertical direction is higher than that of the first end 221a in the vertical direction; a fourth end 212a opposite to the third end 211 is arranged on the periphery of the concave cambered surface 212, and the height of the fourth end 212a in the vertical direction is higher than that of the third end 211; the end face of the second end 221b of the convex cambered surface 221 is connected with the end face of the fourth end 212a of the concave cambered surface 212, and the two end faces are consistent in height; the height of the first end 221a and the second end 221b, the height of the fourth end 212a and the height of the third end 211 enable the top surface of the sieve plate 23 to be wavy, and the shape of the edges of the protruding cambered surfaces 221 at the two ends of the sieve plate is convenient for the sieve plate to be installed in the low-pressure separator, so that the time for installation and disassembly is saved, and the assembly and cleaning of the sieve plate are convenient.

In a specific embodiment, the bottom surface of the screen plate 2 connected with the round table 1 is in a circular shape; the area of the bottom surface of the sieve plate 2 is consistent with the area of the top surface of the round table 1, and the end point of the third end 211 of the concave part 21 is arranged on the central axis of the round table 1 so as to realize complete contact between liquid and the top surface of the wavy sieve plate, increase the contact area between the liquid and the liquid, provide the maximum buffer effect for the liquid, ensure that the liquid flows more regularly when passing through the sieve plate and the round table, reduce the turbulent kinetic energy of the liquid, further reduce the impact of the liquid on the inner wall of the separator, and relieve the falling phenomenon of the coating on the inner wall, thereby improving the separation effect and the separation efficiency; in the embodiment, the diameter of the bottom of the sieve plate 2 is 2000mm, the height of the round table 1 is 114.3mm, and in actual use, the sieve plate can be set according to production requirements.

In a specific embodiment, the height of the first end 221a in the vertical direction is consistent with the height of the third end 211 in the vertical direction, so as to improve the buffer effect of the top surface 23 of the sieve plate on the liquid, reduce the impact of the liquid on the inner wall of the low-pressure separator 3, reduce the falling of the coating on the inner wall, improve the separation efficiency, reduce the turbulent kinetic energy of the liquid, prevent the liquid drop from being impacted into a small-particle-size drop, further improve the separation efficiency and the separation effect of the low-pressure separator, effectively reduce the liquid sticking phenomenon, and further improve the comprehensive performance of the low-pressure separator. In the present embodiment, the distance between the third end 211 and the fourth end 212a in the vertical direction, i.e. the height of the screen deck 2 is 170mm.

In a specific embodiment, the sieve holes 4 are uniformly distributed on the top surface 23 of the sieve plate, and the adjacent sieve holes 4 have equal intervals, so that the uniform separation of the fluid in the low-pressure separator is ensured, the stability of the separated liquid is improved, and the separation effect of the separator is improved; in this embodiment, the first sieve opening 4 is set at the end point of the third end 211, and then other sieve openings 4 are set at an angle of 60 ° to the outer periphery thereof, that is, the line connecting the center point of one sieve opening 4 and the center points of two adjacent sieve openings 4 forms a regular triangle; the diameter of the sieve holes 4 is 11.1mm, the number of the sieve holes 4 is 5328, the distance between adjacent sieve holes 4 is 26mm, and in actual use, the sieve holes can be set according to actual process requirements.

In a specific embodiment, as shown in fig. 3, a vertex angle is formed at a connection intersection point of the end surface of the first end 221a and the top surface of the round table 1, and an included angle θ is formed by using an edge on the top surface of the round table 1 and two edges passing through the vertex angle and tangent to the convex cambered surface 221 as angles respectively;

forming an included angle beta by taking the end point of the third end 211 as a vertex angle and respectively taking an edge on the top surface of the round table and two edges which pass through the end point of the third end 211 and are tangent with the concave cambered surface as angles; the included angle theta is larger than the included angle beta, so that the operation requirement of the low-pressure separator is met, a buffer effect is provided for liquid in the low-pressure separator 3, and the separation efficiency is ensured; in addition, the area of the protruding cambered surface 221 can be increased, when the screen plate is installed in the low-pressure separator 3 or detached therefrom, the contact installation area of the screen plate is increased, namely the acting point of the screen plate is increased, so that the efficiency of installing and detaching the screen plate can be improved, and the screen plate is convenient to assemble and clean; in this embodiment, θ=44°, β=28°.

In a specific embodiment, the surfaces of the sieve plate 2 and the round table 1 are coated with anti-corrosion coatings, so that the anti-corrosion performance is improved, the service life of the sieve plate is prolonged, and the overhaul cost is reduced; in this embodiment, the anticorrosive material used for the anticorrosive coating is polytetrafluoroethylene.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (7)

1. The wave type sieve plate of the low-pressure separator is characterized by comprising a round table (1) and a sieve plate (2);

the round table (1) is in a cylindrical shape, and the sieve plate (2) is arranged at the top of the round table (1);

the center of the sieve plate (2) is provided with a concave part (21), and a concave cambered surface (212) is formed by extending the top of the outer side in the circumferential direction by taking the end point of a third end (211) at the bottom of the concave part (21) as the center of a circle;

the periphery of the concave part (21) extends outwards to form a convex part (22), the convex part is provided with a convex cambered surface (221), the concave cambered surface (212) is connected with the convex cambered surface (221) to form a wave-shaped sieve plate top surface (23), and the sieve plate top surface (23) faces the top direction of the low-pressure separator (3);

the round table (1) and the sieve plate (2) are provided with sieve holes (4) arranged along the vertical direction.

2. The low-pressure separator wavy screen plate according to claim 1, wherein a first end (221 a) and a second end (221 b) are respectively arranged at two ends of the protruding cambered surface (221), the first end (221 a) is arranged at one end of the protruding cambered surface (221) far away from the concave cambered surface (212), the second end (221 b) is arranged at one end of the protruding cambered surface (221) close to the concave cambered surface (212), and the height of the second end (221 b) in the vertical direction is higher than that of the first end (221 a); a fourth end (212 a) which is opposite to the third end (211) is arranged on the periphery of the concave cambered surface (212), and the height of the fourth end (212 a) in the vertical direction is higher than that of the third end (211); the end face of the second end (221 b) of the convex cambered surface (221) is connected with the end face of the fourth end (212 a) of the concave cambered surface (212), and the two end faces are identical in height.

3. A low-pressure separator waved screen plate according to claim 2, characterized in that the bottom surface of the screen plate (2) connected with the round table (1) is circular; the area of the bottom surface of the sieve plate (2) is consistent with the area of the top surface of the round table (1), and the end point of the third end (211) of the concave part (21) is arranged on the central axis of the round table (1).

4. A low pressure separator corrugated screen deck according to claim 2, characterized in that the height of the first end (221 a) in the vertical direction coincides with the height of the third end (211) end point in the vertical direction.

5. A low pressure separator waved screen plate according to claim 2, characterized in that the screen holes (4) are uniformly distributed on the top surface (23) of the screen plate, and adjacent screen holes (4) are equally spaced.

6. A low pressure separator waved screen plate in accordance with claim 3, characterized in that the junction of the end surface of the first end (221 a) and the top surface of the round table (1) is taken as a vertex angle, and the two sides on the top surface of the round table (1) and the tangent passing through the vertex angle and tangent to the convex cambered surface (221) are taken as angles respectively to form an included angle θ;

forming an included angle beta by taking an endpoint of the third end (211) as a vertex angle and taking an edge on the top surface of the round table and two edges which pass through the endpoint of the third end (211) and are tangent with the concave cambered surface as angles respectively; the included angle theta is larger than the included angle beta.

7. A low-pressure separator waved screen plate according to claim 1, characterized in that the surfaces of the screen plate (2) and the circular table (1) are coated with an anti-corrosion coating.