Novel ball throwing valve

Abstract

The invention discloses a novel ball injection valve, which belongs to the technical field of valves and comprises a valve body assembly, a valve core assembly and a moving mechanism. Through the valve body assembly and the valve element assembly assembled in the valve body assembly, ball throwing operation is completed based on rotation of a ball part in the valve element assembly and cooperative operation of a moving mechanism, in the rotation process of the ball throwing valve, crude oil cannot be brought into a ball storage barrel, and the ball throwing valve has the advantages of being simple in structure, stable in work and not prone to damage. Crude oil can be effectively prevented from being taken out of an oil conveying pipeline, zero contact between the ball storage barrel body and the conveying pipeline is achieved, and zero emission and zero pollution of the crude oil in the ball throwing process are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a novel ball-dropping valve. Background Art

[0002] During the transportation of waxy crude oil in pipelines, wax will gradually accumulate on the inner wall of the pipeline as the temperature decreases and the pipeline is used for a longer time, which seriously affects the normal collection and transportation of crude oil, and the pipeline needs to be cleaned on a daily basis. Ball-dropping cleaning is the most economical and effective way to clean pipelines and is widely used in daily oilfield production. Its working principle is to drop a cleaning ball into the waxed pipeline through a ball-dropping valve, so that the cleaning ball can take the crystallized wax attached to the inner wall out of the pipeline as the crude oil flows in the pipeline; since this type of ball-dropping valve needs to connect the pressurized oil pipeline with the ball storage space under normal pressure, and is limited by the operating conditions and the movement form of the valve, the ball-dropping valve currently under research mainly adopts a spherical structure. Its basic principle is to use the vertical and horizontal connecting structures inside the valve or leave a cleaning ball loading space inside the ball valve, use gravity to load the cleaning ball in the ball storage barrel into the ball valve, and drop the cleaning ball into the crude oil pipeline as the ball valve rotates. The key to this technology lies in the design of the internal structure of the ball-dropping valve.

[0003] Since the oil pipeline is operated under pressure, each time the ball is dropped, the pressurized crude oil will splash or contaminate the internal space of the ball drop valve due to the rotation of the ball valve. At this time, there will be a small amount of crude oil in the valve core. When the ball valve rotates and the next ball is dropped, the accumulated crude oil will be brought into the normal pressure ball storage area. Over time, more and more crude oil fills this area, making it impossible for the mechanism to drop the ball smoothly. Therefore, this part of the crude oil needs to be discharged regularly, which will cause environmental pollution and increase the labor intensity of on-site operators. At the same time, in order to solve the problem of not being able to smoothly drop the ball, the existing equipment will use a plunger-type ball pusher to drop the ball, but it still cannot fundamentally solve the problem of the ball dropping valve bringing crude oil into the normal pressure ball storage area, and the additional push rod mechanism makes the overall complexity of the mechanism high and the operation unstable. For example, patent document CN101408098A discloses a timed ball dropping device and method, including a ball storage bucket, a cleaning ball and a ball dropping valve, the valve body is a mechanism that is respectively connected in the vertical and horizontal directions, and a baffle is provided in the center of the ball valve of the vertical pipeline to prevent the cleaning ball from continuing to fall. When the ball valve rotates, the cleaning ball falls into the center of the valve body of the vertical pipeline due to gravity. When the valve body rotates again, the vertical pipeline becomes a horizontal pipeline, and the cleaning ball flows into the pipeline with the crude oil. The valve body rotates back to its original position again to wait for the next ball dropping. The double-conducting design of the invention allows the ball valve to bring a large amount of crude oil into the area to be dropped when it rotates, causing pollution to the ball dropping area. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of ball dropping valve to solve the problems of the ball dropping valve in the use process mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a new type of ball-dropping valve, comprising:

[0006] A valve body assembly defines a first zone therein and has a falling passage for the wax cleaning ball to enter;

[0007] A valve core assembly is assembled in the first interval, and the valve core assembly includes:

[0008] A ball component, which is configured to be rotatable around an axis C and has a radially extending ball supply channel, the ball supply channel passes through the ball component and allows the wax cleaning ball to enter;

[0009] A shell component, in which a cavity for accommodating the spherical component is formed;

[0010] The ball valve further comprises:

[0011] Mobile mechanism, having:

[0012] A first end and a second end are spaced apart in the ball supply passage;

[0013] an active portion configured to rotate about an axis C;

[0014] The driven part is connected to the first end and the second end, and is configured to move linearly along the ball supply channel as the active part rotates.

[0015] Preferably, the wall surface of the cavity is in close contact with the outer surface of the spherical component.

[0016] Preferably, the first end and the second end both have arc surfaces matching the surface of the spherical component.

[0017] Preferably, the first end and the second end are limited when they move to one end of the ball supply channel.

[0018] Preferably, the active part is configured as a cylindrical gear, and the driven part has a rack extending along the ball supply channel and meshing with the cylindrical gear.

[0019] Preferably, the distance between the first end and the second end is smaller than the diameter of the spherical component.

[0020] Preferably, at most one wax cleaning ball is allowed to fully enter the ball supply channel.

[0021] Preferably, the ball dropping valve further comprises a ball storage barrel body, wherein the axis B of the ball storage barrel body is orthogonal to the axis C, and a plurality of wax cleaning balls are stored in the ball storage barrel body in a manner of being sequentially arranged along the axis B.

[0022] Preferably, the valve body assembly comprises a valve body component and a valve cover component assembled on the valve body component, the first section is defined by the valve body component and the valve cover component, and the falling channel is formed on the valve cover component.

[0023] Preferably, the valve body component and the valve cover component are connected by studs.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present application completes the ball dropping operation by providing a valve body assembly and a valve core assembly assembled in the valve body assembly, based on the coordinated operation of the rotation and movement mechanism of the ball component in the valve core assembly. During the rotation of the ball dropping valve, crude oil will not be brought into the ball storage barrel. The design has the characteristics of simple structure, stable operation, and not easy to damage. It can effectively prevent crude oil from being brought out of the oil pipeline, realize zero contact between the ball storage barrel and the transportation pipeline, and achieve zero discharge and zero pollution of crude oil during the ball dropping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the ball valve structure for this application;

[0027] Figure 2 This is a diagram of the ball valve operation process for this application.

[0028] In the figure:

[0029] 100, valve body assembly; 101, valve body component; 102, valve cover component; 103, drop channel;

[0030] 200, ball storage barrel;

[0031] 300, valve core assembly; 301, housing component; 302, ball component; 303, ball supply channel;

[0032] 400, moving mechanism; 401, active part; 402, driven part; 403, first end; 404, second end;

[0033] 500. Transportation pipeline. DETAILED DESCRIPTION

[0034] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0035] A novel ball drop valve (hereinafter referred to as the ball drop valve) is installed on a waxy crude oil transportation pipeline 500 (hereinafter referred to as the transportation pipeline 500) and is configured to supply a cleaning ball to the transportation pipeline 500 to clean the transportation pipeline 500.

[0036] The structure of the ball dropping valve will now be described with reference to the accompanying drawings, in which line A constitutes the axis of the delivery pipeline. In some embodiments, the above-mentioned ball dropping valve includes a valve body assembly 100 and a valve core assembly 300, wherein the valve body assembly 100 includes a valve body part 101 and a valve cover part 102, and the two are connected by connecting parts such as studs, that is, the valve cover part 102 is installed on the valve body part 101 by connecting parts such as studs, and a first interval for accommodating the valve core assembly 300 is jointly defined by the valve body part 101 and the valve cover part 102.

[0037] Reference Figure 1 The ball-dropping valve further comprises a ball-storing barrel body 200, which is substantially formed as a cylindrical component extending along an axis B, wherein the axis B and the axis A are perpendicular to each other, and the inner diameter of the ball-storing barrel body 200 is substantially the same as the diameter of the wax-cleaning ball, that is, a plurality of wax-cleaning balls are stored in the ball-storing barrel body 200 in a sequential arrangement along the axis B, and can fall along the axis B under the action of their own gravity, and be sequentially supplied to the conveying pipeline through the ball-dropping valve to complete the ball-dropping operation; back to Figure 1 The valve cover component 102 is formed with a falling channel 103, which extends approximately along the axis B, and the specification of the falling channel 103 is adapted to the specification of the wax cleaning ball, and is constituted as a connecting channel between the ball storage barrel body 200 and the first interval, that is, the wax cleaning balls stored in the ball storage barrel body 200 can enter the first interval (specifically, enter the subsequent ball throwing channel in the ball component 302) through the falling channel 103, and enter the transport pipeline 500 under the action of the valve core assembly 300 (described later);

[0038] Reference Figure 1 The valve core assembly 300 includes a ball component 302 and a shell component 301, wherein the shell component 301 is adapted to the first interval and can be installed and fixed in the first interval. In some embodiments, the shell component 301 is configured as a cubic shell, and a cavity for accommodating the ball component 302 is provided in the shell component 301. The outer surface of the ball component 302 and the wall surface of the cavity in the shell component 301 are in close contact to form a seal, and the ball component 302 is configured to be rotatable relative to the shell component 301. Exemplarily, the ball component 302 can rotate around an axis C under the action of an electric actuator (not shown in the figure), wherein the axis C is Figure 1 In the figure, it is indicated as being perpendicular to the paper surface, that is, the axis C is orthogonal to the axis A of the transport pipe 500 and the axis B of the ball storage barrel 200;

[0039] Back to Figure 1 Continuing to explain the ball component 302, a ball supply channel 303 that matches the specifications of the wax cleaning ball is formed in the ball component 302, and the ball supply channel 303 is configured to extend along the radial direction of the ball component 302 and penetrate the shell component 301, that is, the axis D of the ball supply channel 303 is configured to be a straight line passing through the center of the ball component 302, and the axis D of the ball supply channel 303 is orthogonal to the axis C. In other words, the axis D of the ball supply channel 303 is perpendicular to the axis A of the transport pipeline 500 and the axis C of the ball storage barrel 200. B and the axis C of the falling channel 103 are all located on the same plane. In some embodiments, the ball supply channel 303 is configured as an intermediate channel between the falling channel 103 and the transport pipe 500. When the ball component 302 rotates until the axis D of the ball supply channel 303 coincides with the axis B of the falling channel 103, the wax cleaning ball can enter the ball supply channel 303 from one end of the ball supply channel 303 from the ball storage barrel 200 and / or enter the transport pipe 500 from the other end of the ball supply channel 303 to realize the supply operation of the wax cleaning ball;

[0040] Reference Figure 1 The ball valve further comprises a moving mechanism 400 disposed in the ball component 302, and the moving mechanism 400 is disposed along the extension direction of the ball supply channel 303 (i.e., the radial direction of the ball component 302). In some embodiments, the moving mechanism 400 comprises an active portion 401, a driven portion 402, a first end portion 403, and a second end portion 404, wherein the first end portion 403 and the second end portion 404 are spaced apart in the ball supply channel 303, and the distance between the first end portion 403 and the second end portion 404 (hereinafter referred to as the first distance) is smaller than the diameter of the ball component 302, and the difference between the diameter of the ball component 302 and the first distance is not smaller than the diameter of the wax cleaning ball, that is, when one of the first end portion 403 or the second end portion 404 is located in the ball supply channel 303, the moving mechanism 400 is disposed along the extension direction of the ball supply channel 303 (i.e., the radial direction of the ball component 302). When the first end 403 or the second end 404 of the moving mechanism 400 is located at one end of the ball supply channel 303, the remaining space in the ball supply channel 303 except for the moving mechanism 400 (hereinafter referred to as the empty space) can accommodate at least one wax cleaning ball. Preferably, when one of the first end 403 or the second end 404 of the moving mechanism 400 is located at one end of the ball supply channel 303, the specification of the empty space in the ball supply channel 303 is adapted to the specification of a single wax cleaning ball. In some embodiments, the first end 403 and the second end 404 both have an arc surface adapted to the surface of the ball component 302. When the first end 403 or the second end 404 is located at one end of the ball supply channel 303, the arc surface fills the gap of the ball component 302 at the position of the ball supply channel 303 to form a complete spherical surface at this position.

[0041] Back to Figure 1Continuing with the description of the moving mechanism 400, the active part 401 of the moving mechanism 400 is configured to be able to rotate around the axis C, that is, the active part 401 can rotate around the axis C under the action of external electric actuators and other components, and the driven part 402 is configured to move linearly along the ball supply channel 303 as the active part 401 rotates, and the two ends of the driven part 402 are respectively connected to the first end 403 and the second end 404, that is, the linear movement of the driven part 402 drives the first end 403 and the second end 404 to move.

[0042] In some embodiments, the active part 401 is constituted as a cylindrical gear, and the driven part 402 has a rack extending along the ball supply channel 303 and meshing with the cylindrical gear. When the active part 401 rotates with the ball component 302, the driven part 402 drives the first end 403 and the second end 404 to move linearly along the ball supply channel 303 synchronously by means of the meshing action of the rack and gear.

[0043] Reference Figure 2 , now the action process of the ball valve is described in conjunction with the accompanying drawings:

[0044] Step 1: The ball-dropping valve performs a ball-dropping action, and the wax-clearing ball located at the bottom of the ball storage cylinder is ready to enter the ball supply channel 303;

[0045] Step 2, the moving mechanism 400 in the ball-dropping valve moves downward, and the wax-cleaning ball falls into the ball-supplying channel 303. At this time, the active part 401 rotates around the axis C under the action of an external force, and the driven part 402 moves downward with the rotation of the active part 401, so that a space for accommodating the wax-cleaning ball is formed between the arc surface of the first end 403 and the end of the ball-supplying channel 303, that is, the wax-cleaning ball gradually enters the ball-supplying channel 303 with the linear movement of the driven part 402;

[0046] Step 3: The ball valve rotates 180° until the cleaning ball falls into the crude oil transportation pipeline 500. At this time, the ball component 302 rotates 180°, and the first end portion 403 and the wax cleaning ball located at the top move to the bottom. Correspondingly, the wax cleaning ball falls into the transportation pipeline 500 under its own gravity.

[0047] Step 4, the straight-tube mechanism moves downward until the first end 403 moves to one end of the ball supply channel 303 to complete the ball throwing action. Correspondingly, a space for the wax cleaning ball to enter is formed between the second end 404 and the end of the ball supply channel 303, and the cleaning ball in the ball storage body enters the ball supply channel 303. At this time, when the moving mechanism 400 is in motion, the rotation direction of the active part 401 is opposite to the rotation direction in step 2;

[0048] Step 5: Wait for the next pitching action.

[0049] When the above-mentioned ball-dropping valve is in operation, the wax-cleaning ball pushing action of the mobile mechanism 400 and the wax-cleaning ball receiving action in the ball storage barrel 200 are in a synchronous state (the mobile mechanism 400 pushes a wax-cleaning ball into the ball supply channel 303, and a wax-cleaning ball enters the other end to wait for delivery). When the wax-cleaning ball is being transported by the ball-dropping valve, since the ball component 302 rotates in the shell component 301 and is tightly sealed, the ball storage area (normal pressure area) of the device and the ball-dropping area (pressure area) of the transport pipeline 500 are isolated from each other, and crude oil will not be brought out. When the wax-cleaning ball reaches the ball-dropping port, the wax-cleaning ball is pushed by the mobile mechanism 400 to ensure that it enters the transport pipeline 500, and at the same time, the crude oil splashed in the wax-cleaning ball transport space is pushed into the transport pipeline 500, and when the ball is dropped next time, the ball component 302 rotates to scrape off the crude oil contaminated on the surface of the ball-dropping body component 302, ensuring that the upper space will never be exposed to oil pollution when the wax-cleaning ball is transported next time, truly realizing zero emission and zero external emission of the ball-dropping device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of ball valve, characterized by: include: A valve body assembly defines a first zone therein and has a falling passage for the wax cleaning ball to enter; A valve core assembly is assembled in the first interval, and the valve core assembly includes: A ball component, which is configured to be rotatable around an axis C and has a radially extending ball supply channel, the ball supply channel passes through the ball component and allows the wax cleaning ball to enter; A shell component, in which a cavity for accommodating the spherical component is formed; The ball valve also includes: Mobile mechanism, having: A first end and a second end are spaced apart in the ball supply passage; an active portion configured to rotate about an axis C; The driven part is connected to the first end and the second end, and is configured to move linearly along the ball supply channel as the active part rotates.

2. A new type of ball valve according to claim 1, characterized in that: The wall surface of the cavity is in close contact with the outer surface of the spherical component.

3. A new type of ball valve according to claim 1, characterized in that: The first end and the second end both have arc surfaces matching the surface of the spherical component.

4. A new type of ball valve according to any one of claims 1-3, characterized in that: The first end portion and the second end portion are limited when they move to one end of the ball supply passage.

5. The novel ball-dropping valve according to claim 1 is characterized in that: The active part is configured as a cylindrical gear, and the driven part comprises a rack extending along the ball supply channel and meshing with the cylindrical gear.

6. A new type of ball-dropping valve according to claim 1, characterized in that: The distance between the first end and the second end is smaller than the diameter of the ball component.

7. A new type of ball-dropping valve according to claim 1, characterized in that: At most one wax cleaning ball is allowed to fully enter the ball supply channel.

8. The novel ball-dropping valve according to claim 1 is characterized in that: The ball dropping valve also includes a ball storage barrel body, wherein an axis B of the ball storage barrel body is orthogonal to the axis C, and a plurality of wax cleaning balls are stored in the ball storage barrel body in a manner of being arranged in sequence along the axis B.

9. A novel ball-dropping valve according to claim 1, characterized in that: The valve body assembly includes a valve body component and a valve cover component assembled on the valve body component, the first section is defined by the valve body component and the valve cover component, and the falling channel is formed on the valve cover component.

10. A new type of ball-dropping valve according to claim 9, characterized in that: The valve body component and the valve cover component are connected via studs.

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