A delayed coking ball valve

Abstract

The present invention discloses a delayed coking ball valve, comprising: a ball, a valve cover, a valve seat, a purging flange and a purging channel. The ball is rotatably arranged in the valve body, and a valve stem for driving the rotation of the ball is connected to the ball. The valve covers are fixedly arranged at both ends of the valve body. A valve seat is arranged between the valve cover and the valve seat, and the valve seat includes a first valve seat. A first elastic member is arranged between the first valve seat and the valve cover, and the first elastic member applies an elastic force in the direction of the ball to the acting portion of the first valve seat. At least two first guide grooves are formed in the acting portion, and any one of the first guide grooves communicates with the through hole of the valve seat. A plurality of purging flanges are arranged on the valve body, and a plurality of purging channels are also arranged on the valve body. The purging channels communicate with the corresponding purging flanges, and the purging channels communicate with the first guide grooves. The purging efficiency of the residual oil at the valve seat is improved, and the first elastic member is prevented from being blocked by the coked residual oil and losing its elasticity, effectively solving the problem that the valve seat is stuck and the valve cannot be opened or the sealing fails.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and particularly to a delayed coking ball valve. Background Art

[0002] Delayed coking is a thermal cracking process. Its main purpose is to convert residual oil with high carbon residue into light oil. The device used can operate in a cycle, that is, the heavier fraction in the coking distillate oil of heavy oil is used as recycle oil and stays in the device for a longer time. A ball valve is a valve in which the closing member (ball) is driven by a valve stem and rotates around the axis of the ball valve.

[0003] In the prior art, when multiple purge ports are provided around the valve body and it is necessary to purge the inside of the valve body, a pipeline is connected to the purge port of the valve body, and the other end of the pipeline is connected to a blowing device, and the inside of the valve body is purged through the blowing device to clean the residual oil in the valve body.

[0004] Due to the poor fluidity of the residual oil, the residual oil is easily accumulated in the gap between the valve seat and the spring. Simply relying on purging through the purge ports cannot completely blow out the residual oil between the valve seat and the spring, resulting in low purging efficiency of the residual oil at the valve seat, and it is easy for the residual oil to accumulate and coke at the valve seat, causing the valve seat and the spring to be blocked, affecting the opening and closing of the valve body. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the residual oil is easily accumulated in the gap between the valve seat and the spring, causing the valve seat and the spring to be blocked, and affecting the opening and closing of the valve body.

[0006] For this purpose, the present invention provides a delayed coking ball valve, comprising:

[0007] A ball, rotatably arranged in the valve body, and a valve stem is connected to the ball;

[0008] A valve cover, fixedly arranged at both ends of the valve body;

[0009] A valve seat, arranged between the valve cover and the ball; the valve seat includes a first valve seat, and a first elastic member is arranged between the first valve seat and the valve cover, and the first elastic member applies an elastic force in the direction of the ball to the acting portion of the first valve seat;

[0010] At least two first guide grooves are opened on the acting portion; any one of the first guide grooves is communicated with the through hole of the first valve seat;

[0011] A plurality of purge flanges are arranged on the valve body;

[0012] A plurality of purge channels are communicated with the corresponding purge flanges, and the purge channels are communicated with the first guide grooves.

[0013] Further, at least one surface of the first guide groove is an inclined surface or an arc surface.

[0014] Further, the bottom surface or the side surface of the first guide groove is an arc surface.

[0015] Further, the side surface of the first guide groove is an inclined surface, and the included angle between the side surface and the bottom surface of the first guide groove is an obtuse angle.

[0016] Further, a plurality of first guide grooves are provided on the acting portion;

[0017] The first guide grooves are arranged in an annular array around the axis of the first valve seat.

[0018] Further, the first valve seat is arranged in a stepped manner, and a stepped groove located on the outer ring of the first elastic member is provided on the valve cover; a second elastic member is pressed between the stepped groove and the stepped portion of the first valve seat, and the second elastic member applies an elastic force to the first valve seat in the direction of the sphere;

[0019] A plurality of second guide grooves are provided on the stepped portion.

[0020] Further, the inner wall of the second guide groove is in an arc shape or an inclined surface.

[0021] Further, the second guide grooves are arranged in an annular array around the axis of the first valve seat.

[0022] Further, the two ends of the first guide groove are respectively located on both sides of the pressing portion of the first elastic member and the first valve seat;

[0023] The two ends of the second guide groove are respectively located on both sides of the pressing portion of the second elastic member and the first valve seat.

[0024] Further, a plurality of the purge channels are arranged in an annular array around the first valve seat.

[0025] The technical solution of the present invention has the following advantages:

[0026] 1. The delayed coking ball valve provided by the present invention includes: a sphere, a valve cover, a valve seat, a purge flange and a purge channel. The sphere is rotatably arranged in the valve body, a valve stem for driving the sphere to rotate is connected to the sphere, and the valve cover is fixedly arranged at both ends of the valve body. A valve seat is arranged between the valve cover and the valve seat, the valve seat includes a first valve seat, a first elastic member is arranged between the first valve seat and the valve cover, and the first elastic member applies an elastic force to the acting portion of the first valve seat in the direction of the sphere. At least two first guide grooves are formed on the acting portion, and any one of the first guide grooves communicates with the through hole of the valve seat. A plurality of purge flanges are arranged on the valve body, a plurality of purge channels are also arranged on the valve body, the purge channels communicate with the corresponding purge flanges, and the purge channels communicate with the first guide grooves.

[0027] In this delayed coking ball valve, residual oil is likely to accumulate in the gap between the valve seat and the spring. At least two first guiding grooves are provided in the first valve seat acting portion, and the first guiding grooves communicate with the through holes of the first valve seat. The purge flange and the purge channel are purged by a purging device, and the purge channel communicates with the first guiding grooves, so that the residual oil between the first valve seat and the first elastic member is blown into the through holes along the first guiding grooves. That is, the residual oil between the first valve seat and the first elastic member is more easily blown out, improving the purging efficiency of the residual oil at the valve seat, avoiding the first elastic member being blocked by coked residual oil and losing its elasticity, and effectively solving the problem that the valve seat is stuck, resulting in the valve being unable to open or the sealing being ineffective.

[0028] 2. In the delayed coking ball valve provided by the present invention, at least one side of the first guiding groove is set as an inclined surface or an arc surface, so as to facilitate the residual oil to slide from the first guiding groove to the through hole, improving the purging efficiency of the residual oil at the valve seat.

[0029] 3. In the delayed coking ball valve provided by the present invention, the first guiding grooves are arranged in a circumferential array around the axis of the first valve seat, ensuring that the residual oil at all corners of the valve seat is purged cleanly and preventing the residual oil from remaining on the valve seat.

[0030] 4. In the delayed coking ball valve provided by the present invention, the first valve seat is stepped, and a stepped groove located outside the first elastic member is provided on the valve cover. A second elastic member is provided in a pressing manner between the stepped groove and the stepped portion of the first valve seat, and the second elastic member applies an elastic force towards the sphere direction to the first valve seat. A plurality of second guiding grooves are provided on the stepped portion, making it easier to blow out the residual oil between the stepped portion and the second elastic member, and further improving the purging efficiency of the residual oil at the valve seat.

[0031] 5. In the delayed coking ball valve provided by the present invention, the inner wall of the second guiding groove is arc-shaped or inclined, ensuring that the residual oil is more easily blown out from the second guiding groove and improving the purging efficiency.

[0032] 6. In the delayed coking ball valve provided by the present invention, the second guiding grooves are arranged in a circumferential array around the axis of the first valve seat, ensuring that the residual oil at all corners of the stepped portion of the valve seat is purged cleanly and preventing the residual oil from remaining on the stepped portion.

[0033] 7. In the delayed coking ball valve provided by the present invention, the two ends of the first guiding groove are respectively located on both sides of the pressing portion between the first elastic member and the first valve seat, ensuring that the gas in the purge channel can be blown from one end of the first guiding groove to the other end, preventing the first elastic member from blocking the gas in the purge channel from purging the first guiding groove, and effectively removing the residual oil in the first guiding groove. The two ends of the second guiding groove are respectively located on both sides of the pressing portion between the second elastic member and the first valve seat, ensuring that the gas in the purge channel can be blown from one end of the second guiding groove to the other end, preventing the second elastic member from blocking the gas in the purge channel from purging the second guiding groove, and effectively removing the residual oil in the second guiding groove.

[0034] 8. The delayed coking ball valve provided by the present invention has a plurality of purging channels arranged in an annular array around the first valve seat, ensuring uniform removal of residual oil around the first valve seat and preventing the accumulation and coking of residual oil on the first valve seat. Description of the Drawings

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is a sectional view of the delayed coking ball valve in Embodiment 1 of the present invention;

[0037] Figure 2 It is Figure 1 the enlarged view at A in

[0038] Figure 3 It is Figure 1 the enlarged view at B in

[0039] Figure 4 It is the top view of the first valve seat in the delayed coking ball valve in Embodiment 1 of the present invention;

[0040] Figure 5 It is the sectional view of the first valve seat in the delayed coking ball valve in Embodiment 1 of the present invention.

[0041] Explanation of the Reference Numerals in the Drawings:

[0042] 1. Valve body; 2. Sphere; 3. Valve stem; 4. Purging flange; 401. Purging channel; 5. First valve seat; 501. First guide groove; 502. Inclined surface; 503. Second guide groove; 6. First elastic member; 7. Second elastic member; 8. Second valve seat; 9. Baffle; 10. Connecting member; 11. Valve cover. Detailed Embodiments

[0043] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Embodiment 1

[0048] This embodiment provides a delayed coking ball valve, as Figure 1 , Figure 2 and Figure 4 shown, including: a sphere 2, a valve cover 11, a valve seat, a purge flange 4, and a purge channel 401. The sphere 2 is rotatably arranged in the valve body 1. A valve stem 3 for driving the rotation of the sphere 2 is connected to the sphere 2. The valve cover 11 is fixedly arranged at both ends of the valve body 1. A valve seat is arranged between the valve cover 11 and the sphere 2. The valve seat includes a first valve seat 5. A first elastic member 6 is arranged between the first valve seat 5 and the valve cover 11. The first elastic member 6 applies an elastic force in the direction of the sphere 2 to the acting portion of the first valve seat 5. At least two first guide grooves 501 are formed on the acting portion. Any one of the first guide grooves 501 communicates with the through hole of the valve seat. A plurality of purge flanges 4 are arranged on the valve body 1. A plurality of purge channels 401 are also arranged on the valve body 1. The purge channels 401 communicate with the corresponding purge flanges 4, and the purge channels 401 communicate with the first guide grooves 501.

[0049] In this delayed coking ball valve, residue oil is likely to accumulate in the gap between the valve seat and the spring. At least two first guide grooves 501 are provided in the acting part of the first valve seat 5, and the first guide grooves 501 communicate with the through holes of the first valve seat 5. The purge flange 4 and the purge channel 401 are purged by a purging device, and the purge channel 401 communicates with the first guide grooves 501, so that the residue oil between the first valve seat 5 and the first elastic member 6 is blown into the through hole along the first guide grooves 501. That is, the residue oil between the first valve seat 5 and the first elastic member 6 is more easily blown out, improving the purging efficiency of the residue oil at the valve seat, avoiding the first elastic member 6 being stuck by coked residue oil and losing its elasticity, and effectively solving the problem that the valve seat is stuck, resulting in the valve being unable to open or the sealing failing.

[0050] Specifically, as Figure 5 shown, at least one surface of the first guide groove 501 is set as an inclined surface 502 or an arc surface, so as to facilitate the residue oil to slide from the first guide groove 501 to the through hole, improving the purging efficiency of the residue oil at the valve seat.

[0051] Specifically, the bottom surface of the first guide groove 501 is an arc surface, or the side surface of the first guide groove 501 is an arc surface, facilitating the residue oil to slide from the bottom arc surface to the through hole, improving the purging efficiency of the residue oil at the valve seat. Specifically, the side surface and the bottom surface of the first guide groove 501 can be arc surfaces at the same time, facilitating the residue oil to slide from the arc surface in the first guide groove 501 and preventing the residue oil from sticking to the bottom surface and the side surface of the first guide groove 501.

[0052] Specifically, the side surface of the first guide groove 501 can be an inclined surface to ensure that the residue oil in the first guide groove 501 can smoothly slide from the side surface. The included angle between the side surface and the bottom surface of the first guide groove 501 is an obtuse angle to prevent the residue oil from accumulating at the included angle between the side surface and the bottom surface.

[0053] Specifically, as Figure 4 shown, a plurality of first guide grooves 501 are provided in the acting part. The first guide grooves 501 are arranged in a circular array around the axis of the first valve seat 5 to ensure that the residue oil at all corners of the valve seat is purged cleanly and prevent the residue oil from remaining on the valve seat. At the same time, the first guide grooves 501 are evenly arranged on the first valve seat 5, so as to facilitate the processing of a plurality of first guide grooves 501 on the first valve seat 5, improving the processing efficiency of the first guide grooves 501 and reducing the production cost of the first valve seat 5.

[0054] Specifically, as Figure 2 and Figure 5As shown, the first valve seat 5 is stepped, and a stepped groove is provided on the valve cover 11. The stepped groove is located on the outer ring of the first elastic member, and a second elastic member 7 is pressed between the stepped groove and the stepped portion of the first valve seat 5. The second elastic member 7 applies an elastic force to the first valve seat 5 in the direction of the sphere 2. The stepped portion is provided with a plurality of second guide grooves 503. Since the gap between the second elastic member 7 and the first valve seat 5 is small, it is easy to accumulate residual oil. By providing the second guide grooves 503 on the stepped portion, the residual oil between the stepped portion and the second elastic member 7 can be more easily blown out, further improving the purging efficiency of the residual oil at the valve seat.

[0055] Specifically, as Figure 5 shown, the inner wall of the second guide groove 503 is arc-shaped or inclined, ensuring that the residual oil can be more easily blown out from the second guide groove 503. The arc-shaped surface of the second guide groove 503 provides guidance for the residual oil, improving the purging efficiency of the residual oil.

[0056] Specifically, as Figure 5 shown, the second guide grooves 503 are arranged in a circular array around the axis of the first valve seat 5, ensuring that the residual oil at all corners of the stepped portion of the valve seat is purged cleanly and preventing the residual oil from remaining on the stepped portion. At the same time, the second guide grooves 503 are arranged in an array on the first valve seat 5, facilitating the machining of a plurality of second guide grooves 503 on the first valve seat 5, improving the machining efficiency of the second guide grooves 503, and reducing the production cost of the first valve seat 5.

[0057] Specifically, the two ends of the first guide groove 501 are respectively located on both sides of the pressing portion between the first elastic member 6 and the first valve seat 5, ensuring that the gas in the purging channel 401 can be blown from one end of the first guide groove 501 to the other end, preventing the first elastic member 6 from blocking the gas in the purging channel 401 from purging the first guide groove 501, and effectively removing the residual oil in the first guide groove 501. The two ends of the second guide groove 503 are respectively located on both sides of the pressing portion between the second elastic member 7 and the first valve seat 5, ensuring that the gas in the purging channel 401 can be blown from one end of the second guide groove 503 to the other end, preventing the second elastic member 7 from blocking the gas in the purging channel 401 from purging the second guide groove 503, and effectively removing the residual oil in the second guide groove 503.

[0058] Specifically, a plurality of purging channels 401 are arranged in a circle around the first valve seat 5, and the purging channels 401 communicate with the corresponding purging flanges 4. Ensure that the residual oil around the first valve seat 5 is evenly removed, preventing the residual oil from accumulating and coking on the first valve seat 5.

[0059] Specifically, as Figure 2 shown, both the first elastic member 6 and the second elastic member 7 are disc springs.

[0060] Specifically, as Figure 3 shown, it further includes a second valve seat 8, and the second valve seat 8 is fixedly arranged on the valve cover 11.

[0061] Specifically, as Figure 3 shown, it further includes a baffle 9 and a connecting piece 10. A stepped opening is provided on the second valve seat 8, the baffle 9 is clamped in the stepped opening, and the baffle 9 is fixedly arranged on the valve cover 11 through the connecting piece 10, ensuring the stable fixation of the second valve seat 8.

[0062] When purging the ball valve, first rotate the ball 2 to the open state through the valve stem 3 to connect the purging channel 401 and the valve seat gap. Connect the purging device to the purging flange 4, drive the purging device, and purge the purging flange 4 and the purging channel 401 through the purging device, so that the residual oil between the first valve seat 5 and the first elastic member 6 is blown into the through hole along the first guide groove 501, that is, the residual oil between the first valve seat 5 and the first elastic member 6 is more easily blown out. At the same time, the first guide groove 501 is provided with an inclined surface 502, and the residual oil slides down more easily along the inclined surface 502 without adhesion, improving the purging efficiency of the residual oil at the valve seat, avoiding the first elastic member 6 being blocked by the coked residual oil and losing elasticity, and effectively solving the problem that the valve seat is stuck and the valve cannot be opened or the sealing fails. The stepped portion of the first valve seat 5 is provided with a second guide groove 503, and the surface of the second guide groove 503 is arc-shaped, making the residual oil between the stepped portion and the second elastic member 7 more easily blown out, further improving the purging efficiency of the residual oil at the valve seat.

[0063] As the first alternative embodiment of Embodiment 1, the first guide grooves 501 can be arranged in a non-circular array. For example, a plurality of first guide grooves 501 are evenly opened on the acting portion, which can also ensure that the residual oil at all corners of the valve seat is purged cleanly and prevent the residual oil from remaining on the valve seat.

[0064] As the second alternative embodiment of Embodiment 1, the second guide grooves 503 can be arranged in a non-circular array. For example, a plurality of second guide grooves 503 are evenly opened on the stepped portion, which can also ensure that the residual oil at all corners of the valve seat is purged cleanly and prevent the residual oil from remaining on the valve seat.

[0065] As the third alternative embodiment of Embodiment 1, the first elastic member 6 and the second elastic member 7 can also be named air springs.

[0066] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A delayed coking ball valve, characterized in that, it includes: a sphere (2) rotatably arranged inside a valve body (1), and a valve stem (3) is connected to the sphere (2); a valve cover (11) fixedly arranged at both ends of the valve body (1); a valve seat arranged between the valve cover (11) and the sphere (2); the valve seat includes a first valve seat (5), and a first elastic member (6) is arranged between the first valve seat (5) and the valve cover (11), and the first elastic member (6) applies an elastic force in the direction of the sphere (2) to the acting portion of the first valve seat (5); at least two first guide grooves (501) are opened on the acting portion; any one of the first guide grooves (501) communicates with the through hole of the first valve seat (5); a plurality of purging flanges (4) are arranged on the valve body (1); a plurality of purging channels (401) communicate with the corresponding purging flanges (4), and the purging channels (401) communicate with the first guide grooves (501); the first valve seat (5) is arranged in a stepped manner, and a stepped groove located outside the first elastic member is arranged on the valve cover (11); a second elastic member (7) is arranged between the stepped groove and the stepped portion of the first valve seat (5) in a pressing manner, and the second elastic member (7) applies an elastic force in the direction of the sphere (2) to the first valve seat (5); a plurality of second guide grooves (503) are arranged on the stepped portion; both ends of the first guide groove (501) are respectively located on both sides of the pressing portion of the first elastic member and the first valve seat; both ends of the second guide groove (503) are respectively located on both sides of the pressing portion of the second elastic member and the first valve seat.

2. The delayed coking ball valve according to claim 1, characterized in that, at least one surface of the first guide groove (501) is an inclined surface (502) or an arc surface.

3. The delayed coking ball valve according to claim 2, characterized in that, the bottom surface or the side surface of the first guide groove (501) is an arc surface.

4. The delayed coking ball valve according to claim 2, characterized in that, the side surface of the first guide groove (501) is an inclined surface, and the included angle between the side surface and the bottom surface of the first guide groove is an obtuse angle.

5. The delayed coking ball valve according to claim 2, characterized in that, a plurality of first guide grooves (501) are arranged on the acting portion; the first guide grooves (501) are arranged in a circumferential array around the axis of the first valve seat (5).

6. The delayed coking ball valve according to claim 1, characterized in that, the inner wall of the second guide groove (503) is in an arc shape or an inclined surface.

7. The delayed coking ball valve according to claim 6, characterized in that, the second guide grooves (503) are arranged in a circumferential array around the axis of the first valve seat (5).

8. The delayed coking ball valve according to claim 1, characterized in that, a plurality of the purging channels (401) are arranged in a circumferential array around the first valve seat (5).

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