CN117732813A - A method for dredging shale gas flowback sewage pipelines - Google Patents

Abstract

The invention discloses a dredging method of a shale gas flowback sewage pipeline, which comprises the following steps: when the bent pipe part is blocked, the operating screw is manually rotated forward and backward to drive the dredging block to slide in the curved sliding rail; when the dredging block slides in the direction away from the straight pipe part, the dredging rod slides along with the dredging block to pierce the blocking object, and when the dredging rod moves in the direction away from the bent pipe part, the barb can pull the blocking object downwards; the dredging plate is rotated to stir in the bent pipe part, so that a dredging effect is achieved; when moving to the straight pipe part, the barbs are outwards opened; when the elbow part is blocked, a closed space is formed between the elbow part and the valve of the straight pipe part, when the operation screw rod is rotated, the piston plate slides in the negative pressure chamber to draw the closed space, and when the operation screw rod is rotated in the forward and reverse directions, the blocking object of the elbow part is subjected to outward or inward force; the invention can quickly dredge when the shale gas flowback sewage pipeline is blocked, and ensure the normal discharge of flowback sewage.

Description

A method for dredging shale gas flowback sewage pipelines

Technical field

The invention relates to the field of shale gas, specifically a method for dredging shale gas flowback sewage pipelines.

Background technique

Fracturing flowback fluid is a solid-phase liquid discharged after fracturing operations in oil and gas fields. The main components of this type of liquid are guar gum, preservatives, gel breakers, petroleum and other various chemical additives. It presents the "three "High" (high COD value, high stability, high viscosity) characteristics, if directly discharged without treatment, it will cause harm to the environment.

In the existing technology, shale gas flowback sewage pipelines are prone to blockage, especially in the curved parts of the pipeline. When blocked, it is difficult to clear, affecting the normal discharge of flowback sewage.

Contents of the invention

The object of the present invention is to provide a method for clearing the shale gas flowback sewage pipeline, which can quickly clear the shale gas flowback sewage pipeline when it is blocked and ensure the normal discharge of the flowback sewage.

In order to achieve the above objects, the present invention provides the following technical solution: a method for dredging shale gas flowback sewage pipelines, which includes the following steps:

Step 1): When the elbow part is clogged, close the valve of the straight pipe part, and manually rotate the operating screw forward and backward to drive the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the Push the screw to rotate, and push the screw to rotate to drive the push block to slide. When the push block slides, the push rod drives the dredge block to slide in the curved slide rail;

Step 2): When the dredge block slides away from the straight pipe, the dredge rod slides along with the dredge block, piercing the blockage and causing the barbs to penetrate into the blockage, and the dredge rod moves away from the curved pipe. When moving in the direction, the barbs can pull the blockage downward to facilitate the clearing of the elbow;

Step 3): When the dredge block is sliding, because the power gear and the curved tooth plate are meshed and connected, the power gear rotates and drives the fourth bevel gear to rotate, the fourth bevel gear drives the third bevel gear to rotate, and the third bevel gear drives the The second bevel gear rotates, the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the rotating dredge plate to rotate, so that when the dredge block slides in the curved slide rail, the rotating dredge plate stirs in the elbow part, causing to achieve the dredging effect;

Step 4): Since the barbs and the head of the dredge rod are rotationally connected, when the blockage is penetrated, the barbs press against the head of the dredge rod under the pressure of the blockage, making the pressure smaller and easier to penetrate. When moving toward the straight tube, the barbs expand outward to facilitate pulling out the blockage;

Step 5): When the elbow part is blocked, a closed space is formed between the valves of the elbow part and the straight tube part. Through the setting of the piston plate, when the operating screw is rotated, the piston plate slides in the negative pressure chamber, and the The closed space is pulled out, and when the operating screw is rotated forward and reverse, the blockage in the elbow part is forced outward or inward, making it easier to clear.

Preferably, the shale gas return sewage pipeline includes a sewage pipeline body, and the sewage pipeline body includes a straight pipe part and an elbow part, and is characterized in that: a linear slide rail is fixed in the straight pipe part, and the linear slide rail is connected with the The push block is in sliding fit, and a curved slide rail is fixed in the elbow part. The curved slide rail is in sliding fit with the dredge block. One end of the dredge block is hingedly connected to the push rod, and the other end of the push rod is hinged to the push block. Connection, a push screw is installed and rotated in the linear slide rail, the push screw is threadedly connected to the push block, and one side of the dredge block is rotationally connected to the axis of the rotating dredge plate.

Preferably, one end of the push screw is fixed with a driven bevel gear, the driven bevel gear meshes with the driving bevel gear, and one end of the operating screw is located in the straight tube part and is fixedly connected to the driving bevel gear.

Preferably, the straight tube portion is integrally formed with a negative pressure chamber, the operating screw is rotatably installed in the negative pressure chamber, a piston plate is slidably provided in the negative pressure chamber, the operating screw and the piston plate are threadedly connected, and the end of the operating screw is fixedly connected to the rotating handle.

Preferably, a first bevel gear is fixedly provided on the shaft of the rotating dredging plate, the other side of the dredging block is rotatably connected to the shaft of the power gear, a curved tooth plate is fixedly provided on the inner wall of the curved pipe portion, the power gear and the curved tooth plate are meshingly connected, a fourth bevel gear is coaxially fixed to the power gear, and a transmission rod is also rotatably installed on the other side of the dredging block, a second bevel gear and a third bevel gear are respectively fixedly provided at both ends of the transmission rod, the first bevel gear and the second bevel gear are meshingly connected, and the third bevel gear and the fourth bevel gear are meshingly connected.

Preferably, the straight tube part and the bent tube part are integrally formed.

Preferably, the rotating dredge plate is disposed on one side of the dredge block close to the straight pipe portion, and a dredge rod is fixed on the other side of the dredge block. The curvature of the dredge rod is consistent with the curvature of the bent pipe portion.

Preferably, the head of the dredge rod is provided with a barb for rotation, and a torsion spring is installed on the shaft of the barb.

Preferably, the head of the dredge rod is integrally formed with a stopper, and the number of the barbs is two, and the two barbs are respectively provided on the upper and lower sides of the dredge rod.

Compared with the prior art, the beneficial effects of the present invention are:

1. In the present invention, when the elbow part is clogged, the valve of the straight pipe part is closed, and the operating screw is manually rotated to drive the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the pushing screw to rotate. The push screw rotates to drive the push block to slide. When the push block slides, the push rod drives the dredge block to slide in the curved slide rail. When the dredge block slides, because the power gear and the curved tooth plate are engaged and connected, the power gear rotates and drives the push block to slide. The fourth bevel gear rotates, the fourth bevel gear drives the third bevel gear to rotate, the third bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the rotating dredge plate to rotate, so that When the dredge block slides in the curved slide rail, the rotating dredge plate stirs in the elbow part to achieve the dredge effect;

2. In the present invention, through the arrangement of the dredge rod, when the dredge block slides in the direction away from the straight pipe part, the dredge rod slides along with the dredge block to pierce the blockage, which facilitates the rotation of the dredge plate to stir the blockage and pass the dredge block. The arrangement of barbs allows the barbs to pierce into the blockage when the dredge rod moves toward the bend. When the dredge rod moves away from the bend, the barbs can pull the blockage downward to facilitate the bend. For dredging, the barbs are connected to the head of the dredge rod by rotation. When the blockage is penetrated, the barbs are close to the head of the dredge rod under the pressure of the blockage. The pressure is small and it is easy to penetrate. When the tube moves, the barbs expand outward to facilitate pulling out the blockage;

3. In the present invention, when the bent pipe part is blocked, a closed space is formed between the valves of the bent pipe part and the straight pipe part. Through the setting of the piston plate, when the operating screw is rotated, the piston plate slides in the negative pressure chamber, and the piston plate slides in the negative pressure chamber. Pull out the closed space and rotate the operating screw forward and reverse to make the blockage in the elbow part pull outward or inward to facilitate clearing.

Description of drawings

Figure 1 is a schematic structural diagram of a shale gas flowback sewage pipeline;

Figure 2 is a schematic structural diagram of another shale gas flowback sewage pipeline;

Figure 3 is an enlarged structural schematic diagram of position A in Figure 1;

Figure 4 is a schematic structural diagram of Figure 1 from another perspective;

Figure 5 is an enlarged structural diagram of the area where the dredging block is located in Figure 4.

In the picture: 1-sewage pipe body, 2-bent pipe part, 3-curved slide rail, 4-straight pipe part, 5-dredge block, 6-push rod, 7-push block, 8-piston plate, 9- Operating screw, 10-negative pressure chamber, 11-linear slide rail, 12-push screw, 13-driven bevel gear, 14-driven bevel gear, 15-dredge rod, 16-barb, 17-rotating dredge plate, 18 -Curved tooth plate, 19-torsion spring, 20-first bevel gear, 21-second bevel gear, 22-transmission rod, 23-third bevel gear, 24-fourth bevel gear, 25-power gear, 26 -stop, 27-rotating handle.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment 1: As shown in Figures 1-5: a shale gas return sewage pipeline, including a sewage pipeline body 1. The sewage pipeline body 1 includes a straight pipe part 4 and an elbow part 2. The straight pipe part 4 is fixed with a linear slide rail 11, and the linear slide rail 11 is in sliding fit with the push block 7. A curved slide rail 3 is fixed in the elbow part 2, and the curved slide rail 3 is in sliding fit with the dredge block 5. , the dredge block 5 is hingedly connected to one end of the push rod 6, and the other end of the push rod 6 is hingedly connected to the push block 7. A push screw 12 is rotatably installed in the linear slide rail 11. The push screw 12 and the push block 7 threaded connection, and one side of the dredge block 5 is rotatably connected to the shaft of the rotating dredge plate 17.

As a technical optimization solution of the present invention, one end of the push screw 12 is fixed with a driven bevel gear 13 , the driven bevel gear 13 meshes with the driving bevel gear 14 , and one end of the operating screw 9 is located in the straight tube part 4 And fixedly connected with the driving bevel gear 14.

As a technical optimization solution of the present invention, the straight tube portion 4 is integrally formed with a negative pressure chamber 10, the operating screw 9 is rotatably installed in the negative pressure chamber 10, and a piston plate is slidably provided in the negative pressure chamber 10. 8. The operating screw rod 9 and the piston plate 8 are threaded, and the end of the operating screw rod 9 is fixedly connected to the rotating handle 27.

As a technical optimization solution of the present invention, the first bevel gear 20 is fixed on the axis of the rotating dredge plate 17, and the other side of the dredge block 5 is rotatably connected to the axis of the power gear 25. The elbow portion 2 The inner wall is fixed with a curved tooth plate 18, the power gear 25 and the curved tooth plate 18 are meshed and connected, the power gear 25 is coaxially fixed with a fourth bevel gear 24, and the other side of the dredge block 5 also rotates A transmission rod 22 is installed, and a second bevel gear 21 and a third bevel gear 23 are respectively fixed at both ends of the transmission rod 22. The first bevel gear 20 and the second bevel gear 21 are meshed and connected, and the third bevel gear 21 is engaged and connected. The bevel gear 23 and the fourth bevel gear 24 are meshed and connected.

As a technical optimization solution of the present invention, the straight tube part 4 and the bent tube part 2 are integrally formed.

As a technical optimization solution of the present invention, the rotating dredge plate 17 is provided on one side of the dredge block 5 close to the straight pipe portion 4, and a dredge rod 15 is fixed on the other side of the dredge block 5. The dredge rod 15 The bending arc is consistent with the bending arc of the elbow portion 2 .

As a technical optimization solution of the present invention, as shown in Figure 1, the head of the dredge rod 15 is provided with a barb 16 for rotation, and a torsion spring is installed on the axis of the barb 16.

As a technical optimization solution of the present invention, as shown in Figure 2, the head of the dredge rod 15 is integrally formed with a stopper 26. The number of the barbs 16 is two, and the two barbs 16 are respectively provided on Dredge the upper and lower sides of rod 15.

In this embodiment, the shaft of the rotating dredge plate 17 is limited to one side of the dredge block 5 through bearings, both ends of the push screw 12 are laterally limited to the linear slide rail 11 through bearings, and the operating screw 9 is vertically limited to the negative pressure chamber through bearings. Within 10.

Embodiment 2: The present invention also discloses a method for dredging the above-mentioned shale gas flowback sewage pipeline, which includes the following steps:

Step 1): When the elbow part 2 is clogged, close the valve of the straight pipe part 4, and manually rotate the operating screw 9 forward and backward to drive the driving bevel gear 14 to rotate, and the driving bevel gear 14 drives the driven bevel gear 13 to rotate , the driven bevel gear 13 drives the push screw 12 to rotate, and the push screw 12 rotates to drive the push block 7 to slide. When the push block 7 slides, the push rod 6 drives the dredge block 5 to slide in the curved slide rail 3;

Step 2): When the dredge block 5 slides in the direction away from the straight pipe part 4, the dredge rod 15 slides together with the dredge block 5 to pierce the blockage and make the barbs 16 penetrate into the blockage, and the dredge rod 15 When 15 moves away from the elbow part 2, the barbs 16 can pull the blockage downward to facilitate the clearing of the elbow part 2;

Step 3): When the dredge block 5 is sliding, because the power gear 25 is meshed with the curved tooth plate 18, the power gear 25 rotates and drives the fourth bevel gear 24 to rotate, and the fourth bevel gear 24 drives the third bevel gear 23. Rotate, the third bevel gear 23 drives the second bevel gear 21 to rotate, the second bevel gear 21 drives the first bevel gear 20 to rotate, the first bevel gear 20 drives the rotating dredge plate 17 to rotate, so that the dredge block 5 is on the curved slide rail 3 When sliding inside, the rotating dredge plate 17 stirs in the elbow part 2 to achieve a dredging effect;

Step 4): Since the barb 16 is connected to the head of the dredge rod 15 in a rotational manner, when the blockage is penetrated, the barb 16 is close to the head of the dredge rod 15 under the pressure of the blockage, making the pressure smaller. It is convenient for piercing. When moving toward the straight tube part 4, the barbs 16 open outward to facilitate pulling out the blockage;

Step 5): When the elbow part 2 is blocked, a closed space is formed between the valves of the elbow part 2 and the straight tube part 4. Through the setting of the piston plate 8, when the operating screw 9 is rotated, the piston plate 8 The negative pressure chamber 10 slides to pull out the sealed space. When the operating screw 9 is rotated forward and reverse, the blockage in the elbow portion 2 is forced outward or inward to facilitate clearing.

The working principle of this embodiment is as follows:

In the present invention, when the elbow part 2 is clogged, the valve of the straight pipe part 4 is closed, and the operating screw 9 is manually rotated to drive the driving bevel gear 14 to rotate, and the driving bevel gear 14 drives the driven bevel gear 13 to rotate, and the driven bevel gear 13 The push screw 12 is driven to rotate, and the push screw 12 rotates to drive the push block 7 to slide. When the push block 7 slides, the push rod 6 drives the dredge block 5 to slide in the curved slide rail 3. When the dredge block 5 is sliding, because the power gear 25 It is meshed with the curved tooth plate 18, so the power gear 25 rotates and drives the fourth bevel gear 24 to rotate. The fourth bevel gear 24 drives the third bevel gear 23 to rotate. The third bevel gear 23 drives the second bevel gear 21 to rotate. The second bevel gear 21 drives the first bevel gear 20 to rotate, and the first bevel gear 20 drives the rotating dredge plate 17 to rotate, so that when the dredge block 5 slides in the curved slide rail 3, the rotating dredge plate 17 stirs in the elbow portion 2 , to achieve the effect of dredging. Through the arrangement of the dredge rod 15, when the dredge block 5 slides in the direction away from the straight pipe part 4, the dredge rod 15 slides together with the dredge block 5 to pierce the blockage and facilitate rotation and dredging. The plate 17 agitates the blockage, and through the arrangement of the barbs 16, when the dredge rod 15 moves in the direction of the elbow part 2, the barbs 16 penetrate into the blockage, and the dredge rod 15 moves in the direction away from the elbow part 2 When the barb 16 is inserted into the blockage, the barb 16 can pull the blockage downward to facilitate the dredging of the elbow part 2. The barb 16 is connected with the head of the dredge rod 15. Close to the head of the dredge rod 15, the pressure is small and easy to penetrate. When moving to the straight pipe part 4, the barbs 16 open outward to facilitate pulling out the blockage. When the elbow part 2 is blocked, , a closed space is formed between the valves of the bent pipe part 2 and the straight pipe part 4. Through the arrangement of the piston plate 8, when the operating screw 9 is rotated, the piston plate 8 slides in the negative pressure chamber 10, filling the closed space. Pull and rotate the operating screw 9 forward and backward so that the blockage in the elbow portion 2 is forced outward or inward to facilitate clearing.

The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments in the present application can be arbitrarily combined with each other as long as there is no conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of the present invention.

Claims (9)

1. A dredging method of a shale gas flowback sewage pipeline is characterized by comprising the following steps of: it comprises the following steps:

step 1): when the elbow pipe part (2) is blocked, a valve of the straight pipe part (4) is closed, the driving bevel gear (14) is driven to rotate by manually rotating the operating screw (9) forwards and backwards, the driven bevel gear (13) is driven to rotate by the driving bevel gear (14), the pushing screw (12) is driven to rotate by the driven bevel gear (13), the pushing screw (12) is driven to rotate, the pushing block (7) is driven to slide by the pushing screw (12), and the dredging block (5) is driven to slide in the curved sliding rail (3) by the pushing rod (6) when the pushing block (7) slides;

step 2): when the dredging block (5) slides in a direction away from the straight pipe part (4), the dredging rod (15) slides along with the dredging block (5) to pierce a blockage, the barb (16) pierces the blockage, and when the dredging rod (15) moves in a direction away from the bent pipe part (2), the barb (16) can pull the blockage downwards, so that the bent pipe part (2) is convenient to dredge;

step 3): when the dredging block (5) slides, because the power gear (25) is meshed with the curved toothed plate (18), the power gear (25) rotates and drives the fourth bevel gear (24) to rotate, the fourth bevel gear (24) drives the third bevel gear (23) to rotate, the third bevel gear (23) drives the second bevel gear (21) to rotate, the second bevel gear (21) drives the first bevel gear (20) to rotate, and the first bevel gear (20) drives the rotary dredging plate (17) to rotate, so that the dredging block (5) rotates and agitates in the bent pipe part (2) when sliding in the curved sliding rail (3), and the dredging effect is achieved;

step 4): because the barb (16) is rotationally connected with the head of the dredging rod (15), when a plug is penetrated, the barb (16) is tightly attached to the head of the dredging rod (15) under the pressure of the plug, so that the pressure is smaller, the penetration is convenient, and when the barb moves towards the straight pipe part (4), the barb (16) is outwards opened, and the plug is conveniently pulled out;

step 5): when the elbow pipe part (2) is blocked, a closed space is formed between the elbow pipe part (2) and the valve of the straight pipe part (4), through the arrangement of the piston plate (8), when the operation screw rod (9) is rotated, the piston plate (8) slides in the negative pressure chamber (10) to draw the closed space, and when the operation screw rod (9) is rotated in the forward and reverse directions, the blocking object of the elbow pipe part (2) is subjected to outward or inward force, so that the dredging is facilitated.

2. The method for dredging shale gas flowback sewage pipeline according to claim 1, wherein the method comprises the following steps: shale gas returns and arranges sewage pipe way and include blow off pipe body (1), blow off pipe body (1) include straight tube portion (4) and return bend portion (2), its characterized in that: straight tube portion (4) internal fixation has linear slide rail (11), linear slide rail (11) and ejector pad (7) sliding fit, return bend portion (2) internal fixation has curved slide rail (3), curved slide rail (3) and mediation piece (5) sliding fit, mediation piece (5) are articulated with push rod (6) one end and are connected, push rod (6) other end and ejector pad (7) are articulated to be connected, push screw (12) are installed in linear slide rail (11) internal rotation, push screw (12) and ejector pad (7) threaded connection, mediation piece (5) one side is articulated with the axle swivelling joint who rotates mediation board (17).

3. The method for dredging shale gas flowback sewage pipeline according to claim 2, wherein the method comprises the following steps: one end of the pushing screw rod (12) is fixedly provided with a driven bevel gear (13), the driven bevel gear (13) is meshed with the driving bevel gear (14), and one end of the operating screw rod (9) is positioned in the straight pipe part (4) and is fixedly connected with the driving bevel gear (14).

4. A method for dredging a shale gas flowback sewage pipeline according to claim 3, wherein: the straight pipe part (4) is integrally formed with a negative pressure chamber (10), the operating screw (9) is rotatably arranged in the negative pressure chamber (10), a piston plate (8) is slidably arranged in the negative pressure chamber (10), the operating screw (9) is in threaded connection with the piston plate (8), and the tail end of the operating screw (9) is fixedly connected with the rotary handle (27).

5. The method for dredging shale gas flowback sewage pipeline according to claim 2, wherein the method comprises the following steps: the utility model discloses a gear dredging device, including pull rod, gear, bent pipe portion (2), power gear (25), drive rod (22) is installed in rotation to the axle of pull rod (17), pull rod (5) opposite side and the axle swivelling joint of power gear (25), the inner wall of bent pipe portion (2) is fixed to be equipped with curved pinion rack (18), power gear (25) and curved pinion rack (18) meshing are connected, power gear (25) coaxial fixed fourth bevel gear (24), pull rod (22) is still installed in rotation to pull rod (5) opposite side, second bevel gear (21) and third bevel gear (23) are fixed respectively at the both ends of drive rod (22), first bevel gear (20) and second bevel gear (21) meshing are connected, third bevel gear (23) and fourth bevel gear (24) meshing are connected.

6. The method for dredging shale gas flowback sewage pipeline according to claim 2, wherein the method comprises the following steps: the straight pipe part (4) and the bent pipe part (2) are integrally formed.

7. The method for dredging shale gas flowback sewage pipeline according to claim 2, wherein the method comprises the following steps: the rotary dredging plate (17) is arranged on one side, close to the straight pipe portion (4), of the dredging block (5), a dredging rod (15) is fixed on the other side of the dredging block (5), and the bending radian of the dredging rod (15) is consistent with that of the bent pipe portion (2).

8. The method for dredging a shale gas flowback sewage pipeline according to claim 7, wherein the method comprises the following steps: the head of the dredging rod (15) is rotatably provided with a barb (16), and a torsion spring is arranged on the shaft of the barb (16).

9. The method for dredging shale gas flowback sewage pipeline according to claim 8, wherein the method comprises the following steps: the head integrated into one piece of mediation pole (15) has dog (26), the quantity of barb (16) is two, and two barb (16) set up respectively in the upper and lower two sides of mediation pole (15).