Wellhead anti-blocking device for oil field fracturing

Abstract

The utility model relates to the technical field of oil field fracturing, in particular to a wellhead anti-blocking device for oil field fracturing, which comprises a wellhead pipeline, the outer ring surface of the wellhead pipeline is fixedly connected with a support frame, one side of the support frame is rotatably provided with a driving gear, one side of the driving gear is meshed with a driven fluted disc, and the upper surface of the driven fluted disc can be detachably connected with one end of a support rod; the other end of the supporting rod is fixedly connected with the top of a supporting column, the bottom of the supporting column is fixedly connected with one end of an L-shaped plate, the other end of the L-shaped plate is fixedly connected with one side of a mounting plate through a buffer spring, and the other side of the mounting plate is fixedly connected with a cleaning plate. The device has the beneficial effects that a driven fluted disc indirectly drives a mounting plate to do circular motion, one side of the mounting plate can make a cleaning plate abut against the inner wall of a wellhead pipeline all the time under the elastic force action of a buffer spring, and then the scraping effect and the cleaning efficiency are improved; therefore, the effect of improving the disassembly and assembly efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield fracturing technical field, concretely is wellhead anti -blocking device for oilfield fracturing. BACKGROUND

[0002] Oil layer fracturing generally refers to the principle of using liquid pressure, using high pressure and large displacement pump on the ground, liquid with certain viscosity is injected to oil layer more than the capacity that oil layer can absorb, makes wellbore pressure gradually increases, when the pressure increases more than the pressure that oil layer breaks, oil layer will form one or several horizontal or vertical cracks.

[0003] In the prior art, when actually used, some defects still exist, for example: during oilfield fracturing, the wellhead is usually blocked, resulting in failure of the normal function of the wellhead, and the existing cleaning process is difficult, requiring workers to spend more time, and the operation is difficult, reducing the cleaning efficiency of the workers and the practicability of the overall device. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a wellhead anti-blocking device for oilfield fracturing to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a wellhead anti-blocking device for oilfield fracturing, comprising: a wellhead pipeline, a support frame is fixedly connected to the outer ring surface of the wellhead pipeline, a drive gear is rotatably installed on one side of the support frame, a driven gear plate is engaged on one side of the drive gear, and the upper surface of the driven gear plate is detachably connected to one end of a support rod;

[0006] The other end of the support rod is fixedly connected to the top of a support column, the bottom of the support column is fixedly connected to one end of an L-shaped plate, the other end of the L-shaped plate is fixedly connected to one side of a mounting plate through a buffer spring, and the other side of the mounting plate is fixedly connected to a cleaning plate.

[0007] Preferably, a motor is fixedly installed on one side of the bottom of the support frame, the output end of the motor penetrates the support frame and is fixedly connected to a connecting shaft, a drive gear is fixedly sleeved on the top of the connecting shaft, the drive gear is in meshing transmission with the driven gear plate, and the driven gear plate is rotatably sleeved on the outer ring surface of the wellhead pipeline.

[0008] Preferably, a rotating ring is fixedly connected to the lower surface of the driven gear plate, the rotating ring is slidably connected between the two sides and a limiting ring, the bottom of the limiting ring is fixedly connected to the support frame, a ball is movably connected to the bottom of the rotating ring, and the ball is slidably connected to the surface of the support frame.

[0009] Preferably, the upper surface of the driven gear plate is fixedly connected with a limiting sleeve, the limiting sleeve is slidably connected with the supporting rod inside, the two sides of the limiting sleeve are fixedly connected with one end of the reset spring, the other end of the reset spring is fixedly connected with one end of the limiting pull pin, and the other end of the limiting pull pin is slidably connected with a limiting groove formed on the outer ring surface of the supporting rod close to the limiting sleeve.

[0010] Preferably, the supporting rods are arranged in a circular array on the outer ring surface of the supporting column, the L-shaped plates are arranged in a circular array on the bottom of the outer ring surface of the supporting column, and the cleaning plates abut against the inner wall of the wellhead pipeline.

[0011] Preferably, a groove is formed in the end of the L-shaped plate away from the supporting column, the groove is slidably connected with the mounting plate, one end of the buffer spring is fixedly connected with the inner wall of the groove, and the other end of the buffer spring is fixedly connected with the mounting plate.

[0012] Compared with the prior art, the wellhead pipeline cleaning device has the advantages that: when the inner wall of the wellhead pipeline needs to be cleaned, one end of the supporting rod is installed on the upper surface of the driven gear plate, the other end of the supporting rod is fixedly connected with the supporting column, the supporting column fixes the L-shaped plate, during cleaning, the rotation of the driving gear makes the driving gear mesh with the driven gear plate, so that the supporting column drives the L-shaped plate to move in a circular motion under the rotation of the driven gear plate and the connection of the supporting rod, during the cleaning process, the cleaning plate fixedly installed on one side of the mounting plate scrapes and removes the residual stains on the inner wall of the wellhead pipeline, and the other side of the mounting plate can make the cleaning plate always abut against the inner wall of the wellhead pipeline under the elastic force of the buffer spring, thereby improving the scraping effect and the cleaning efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a bottom view schematic diagram of the internal structure of the utility model;

[0015] Figure 3 It is a side view schematic diagram of the internal structure of the utility model;

[0016] Figure 4 It is a top view schematic diagram of the internal structure of the utility model.

[0017] In the drawing: 1, wellhead pipeline; 2, supporting frame; 3, driving gear; 4, driven gear plate; 5, supporting rod;

[0018] 6, supporting column; 7, L-shaped plate; 8, buffer spring; 9, mounting plate; 10, cleaning plate; 11, motor;

[0019] 12, connecting shaft; 13, swivel; 14, limit ring; 15, ball; 16, limit sleeve; 17, return spring; 18, limit pull pin; 19, limit groove; 20, groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and distinct, the following combining with the drawing carries on further detailed explanation to the utility model embodiment. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0021] Embodiment one: please refer to Figures 1-4 The utility model provides a kind of technical scheme: a wellhead anti-blocking device for oilfield fracturing, comprising: wellhead pipeline 1, support frame 2 is fixedly connected on the outer ring surface of wellhead pipeline 1, support frame 2 bottom four corners are fixedly connected with ground, to stabilize support wellhead pipeline 1, driving gear 3 is rotatably installed on one side of support frame 2, driving gear 3 one side is engaged with driven gear 4, the upper surface of driven gear 4 can be detachably connected with one end of support rod 5, support rod 5 is detachable, to facilitate installation to wellhead pipeline 1 when needed, disassembly is not needed, to improve the practicability of entire device, support rod 5 other end is fixedly connected with support column 6 top, support column 6 bottom is fixedly connected with one end of L-shaped plate 7, L-shaped plate 7 other end is fixedly connected with one side of mounting plate 9 by buffer spring 8, the other side of mounting plate 9 is fixedly connected with cleaning plate 10.

[0022] Support frame 2 is fixedly supported to wellhead pipeline 1, when the inner wall of wellhead pipeline 1 needs to be cleaned, one end of support rod 5 is installed on the upper surface of driven gear 4, other end of support rod 5 is fixedly connected with support column 6, support column 6 is fixed to L-shaped plate 7, then by the rotation of driving gear 3, driving gear 3 is engaged with driven gear 4, so that driven gear 4 is rotated and support rod 5 is connected, so that support column 6 drives L-shaped plate 7 to move in a circle, during rotation, cleaning plate 10 fixedly installed on one side of mounting plate 9 cleans and scrapes the residual stains on the inner wall of wellhead pipeline 1, at the same time, the other side of mounting plate 9 is always in contact with the inner wall of wellhead pipeline 1 under the elastic force of buffer spring 8, to improve scraping effect and cleaning efficiency, when cleaned, support rod 5 is detached from the surface of driven gear 4.

[0023] The embodiment two is based on the embodiment one, the bottom one side of the support frame 2 is fixedly installed with the motor 11, the motor 11 is electrically connected with the external terminal control equipment, the output end of the motor 11 penetrates the support frame 2 and is fixedly connected with the connecting shaft 12, the connecting shaft 12 top is fixedly sleeved with the drive gear 3, the drive gear 3 is engaged transmission with the driven gear 4, the driven gear 4 is rotatably sleeved on the outer circle surface of the wellhead pipeline 1, the driven gear 4 is rotatably connected with the wellhead pipeline 1, the driven gear 4 lower surface is fixedly connected with the rotating ring 13, the rotating ring 13 both sides are slidably connected with the limiting ring 14, the limiting ring 14 is used for limiting the rotation of the rotating ring 13, the limiting ring 14 bottom is fixedly connected with the support frame 2, the limiting ring 14 is fixedly installed on the upper surface of the support frame 2, the rotating ring 13 bottom movably clamps the ball 15, the ball 15 is slidably connected with the surface of the support frame 2, the driven gear 4 upper surface is fixedly connected with the limiting sleeve 16, the limiting sleeve 16 is slidably inserted with the supporting rod 5, the limiting sleeve 16 both sides are fixedly connected with one end of the return spring 17, the other end of the return spring 17 is fixedly connected with one end of the limiting pull pin 18, the other end of the limiting pull pin 18 is slidably inserted with the limiting slot 19, which is opened on the outer circle surface of the supporting rod 5 close to the limiting sleeve 16, one end of the limiting pull pin 18 is fixedly connected with the cross block, the insertion end outer circle surface of the supporting rod 5 and the limiting sleeve 16 is provided with the cross slot, and the cross slot is matched with the cross block.

[0024] When the inner wall of the wellhead pipeline 1 needs to be cleaned, the two limiting pull pins 18 are pulled backward, the limiting pull pins 18 stretch the return springs 17, and the limiting pull pins 18 slide out of the limiting sleeve 16 at the same time, at this time, the supporting rod 5 can be slidably inserted into the limiting sleeve 16, then the limiting pull pins 18 are loosened, and under the elastic force of the return springs 17, the limiting pull pins 18 are reset and inserted into the limiting slot 19, which is opened on the bottom outer circle surface of the supporting rod 5, so that the supporting rod 5 is fixed in the limiting sleeve 16 by the limiting of the limiting pull pins 18, when the inner wall of the wellhead pipeline 1 is cleaned, the motor 11 is started by the external control equipment, the motor 11 drives the drive gear 3 to rotate through the connecting shaft 12, the drive gear 3 is engaged with the driven gear 4, so that the driven gear 4 rotates on the outer circle surface of the wellhead pipeline 1, in the rotating process of the driven gear 4, the driven gear 4 rotates more stably through the sliding cooperation between the limiting ring 14 and the rotating ring 13, so that the cleaning efficiency is improved, at the same time, the bottom of the rotating ring 13 is movably clamped with the ball 15, under the rolling action of the ball 15, the driven gear 4 rotates more smoothly in the rotating process, so that the rotating speed of the cleaning plate 10 is indirectly improved, and the cleaning effect is improved, when the blockage cleaning is completed, the two limiting pull pins 18 are pulled backward again, the limiting of the supporting rod 5 is released, the cleaning assembly is convenient to disassemble, the operation is simple, and a lot of time is not needed to spend, and workers do not need to spend a lot of physical strength, so that the workers' work burden is reduced, a lot of time can be saved when disassembling, so that the disassembling efficiency is improved.

[0025] In the embodiment three, the support rods 5 are arranged on the outer circumferential surface of the top of the support columns 6, the L-shaped plates 7 are arranged on the outer circumferential surface of the bottom of the support columns 6, the support columns 6 stably support the support rods 5 and the L-shaped plates 7, the cleaning plate 10 abuts against the inner wall of the wellhead pipe 1, the recess 20 is formed on the end of the L-shaped plate 7 away from the support column 6, the recess 20 is slidably connected with the mounting plate 9, the recess 20 limits the mounting plate 9, one end of the buffer spring 8 is fixedly connected with the inner wall of the recess 20, and the other end of the buffer spring 8 is fixedly connected with the mounting plate 9.

[0026] When the inner wall of the wellhead pipe 1 is cleaned, the cleaning plate 10 can always be in close contact with the inner wall of the wellhead pipe 1 due to the buffer spring 8 arranged between the mounting plate 9 and the recess 20, even if the inner wall of the pipe is uneven or slightly deformed, the cleaning plate 10 can still be closely attached to the inner wall, thereby ensuring the consistency and reliability of the cleaning effect. In addition, the cleaning plate 10 can always be in close contact with the inner wall of the pipe under the action of the buffer spring 8, which can more effectively scrape off the stains attached to the inner wall of the pipe, reduces the cleaning dead angle, improves the cleaning quality and efficiency, and the operator does not need to frequently adjust the position of the cleaning plate 10 due to the automatic adjustment function of the buffer spring 8, thereby simplifying the operation process.

[0027] In actual use, before the inner wall of the wellhead pipe 1 is cleaned, the two limiting pull pins 18 are pulled backward to stretch the reset springs 17 and slide out of the limiting sleeves 16, at this time, the support rods 5 can be slidably inserted into the limiting sleeves 16, then the limiting pull pins 18 are released, and the limiting pull pins 18 are reset into the limiting grooves 19 formed on the bottom outer circumferential surface of the support rods 5 under the elastic force of the reset springs 17, so that the support rods 5 are fixed in the limiting sleeves 16 through the limiting of the limiting pull pins 18. When the inner wall of the wellhead pipe 1 is cleaned, the driving gear 3 is driven to rotate, the driving gear 3 is engaged with the driven gear 4, the support column 6 drives the L-shaped plate 7 to circularly move under the rotating action of the driven gear 4 and the connecting action of the support rod 5, and the cleaning plate 10 fixedly installed on one side of the mounting plate 9 cleans and scrapes off the residual stains on the inner wall of the wellhead pipe 1 during the rotation. When the inner wall of the wellhead pipe 1 is cleaned, the cleaning plate 10 can always be in close contact with the inner wall of the wellhead pipe 1 due to the buffer spring 8 arranged between the mounting plate 9 and the recess 20, even if the inner wall of the pipe is uneven or slightly deformed, the cleaning plate 10 can still be closely attached to the inner wall, thereby ensuring the consistency and reliability of the cleaning effect.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wellhead anti-plugging device for oilfield fracturing, comprising a wellhead pipe (1), characterized in that: The wellhead pipeline (1) outer ring surface is fixedly connected with a support frame (2), one side of the support frame (2) is rotatably installed with a drive gear (3), one side of the drive gear (3) is engaged with a driven gear disc (4), and the upper surface of the driven gear disc (4) is detachably connected with one end of a support rod (5). The other end of the support rod (5) is fixedly connected with the top of a support column (6), the bottom of the support column (6) is fixedly connected with one end of an L-shaped plate (7), the other end of the L-shaped plate (7) is fixedly connected with one side of a mounting plate (9) through a buffer spring (8), and the other side of the mounting plate (9) is fixedly connected with a cleaning plate (10).

2. The wellhead anti-blocking device for oilfield fracturing of claim 1, characterized in that: The bottom of the support frame (2) is fixedly installed with a motor (11), the output end of the motor (11) penetrates through the support frame (2) and is fixedly connected with a connecting shaft (12), the top of the connecting shaft (12) is fixedly sleeved with the drive gear (3), the drive gear (3) is in meshing transmission with the driven gear disc (4), and the driven gear disc (4) is rotatably sleeved on the outer ring surface of the wellhead pipeline (1).

3. The wellhead anti-blocking device for oilfield fracturing of claim 2, characterized in that: The lower surface of the driven gear disc (4) is fixedly connected with a rotating ring (13), the rotating ring (13) is slidably connected between the two sides of a limiting ring (14), the bottom of the limiting ring (14) is fixedly connected with the support frame (2), the bottom of the rotating ring (13) is movably clamped with a ball (15), and the ball (15) is slidably connected with the surface of the support frame (2).

4. The wellhead anti-blocking device for oilfield fracturing of claim 3, characterized in that: The upper surface of the driven gear disc (4) is fixedly connected with a limiting sleeve (16), the limiting sleeve (16) is slidably inserted with the support rod (5) inside, the two sides of the limiting sleeve (16) are fixedly connected with one end of a return spring (17), the other end of the return spring (17) is fixedly connected with one end of a limiting pull pin (18), and the other end of the limiting pull pin (18) is slidably inserted with a limiting groove (19) formed in the outer ring surface of the end of the support rod (5) close to the limiting sleeve (16).

5. The wellhead anti-plugging device for oilfield fracturing of claim 4, characterized in that: The support rod (5) is arranged in a circumferential array about the top of the outer ring surface of the support column (6), the L-shaped plate (7) is arranged in a circumferential array about the bottom of the outer ring surface of the support column (6), and the cleaning plate (10) abuts against the inner wall of the wellhead pipeline (1).

6. The wellhead anti-blocking device for oilfield fracturing of claim 1, wherein: The end of the L-shaped plate (7) away from the support column (6) is provided with a groove (20), the groove (20) is slidably connected with the mounting plate (9), one end of the buffer spring (8) is fixedly connected with the inner wall of the groove (20), and the other end of the buffer spring (8) is fixedly connected with the mounting plate (9).

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