Pulse deblocking pig

Abstract

The application provides a pulse blockage removing pigging device, which comprises a main body and a pulse blockage removing assembly. The main body has an axial through channel. The end face of the first end of the main body is a guide conical surface. A plurality of liquid outlet holes, which are communicated with the channel, are arranged on the guide conical surface. The first end of the main body is connected with a first plug. A ring groove is arranged on the outer circumferential surface of the main body in the circumferential direction. A leather cup assembly is arranged in the ring groove. The pulse blockage removing assembly is arranged in the channel. The pulse blockage removing assembly comprises a pressure pulse generator and a pressure valve. The outlet of the pressure pulse generator is communicated with the liquid outlet hole. The pressure valve comprises a valve seat, a valve ball and a spring. The first end of the spring abuts against the pressure pulse generator. The valve seat is provided with a center hole. The valve ball can be seated and sealed in the center hole under the action of the spring. The pulse blockage removing pigging device improves the pigging efficiency, reduces the probability that the device is blocked and the pipeline is blocked, and thus improves the later transportation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline pigging, in particular to a pulse blockage-removing pigging device. BACKGROUND

[0002] As an important carrier for long-distance oil and gas transportation, a pipeline will produce deposits and even be blocked after long-term use, which affects the transportation of oil and gas and other media in the pipeline. Therefore, the deposits produced in the pipeline need to be cleaned regularly.

[0003] As one of the mechanical cleaning devices for pipelines, a pigging device can clean and dredge the pipeline in time. The pigging device moves in the lumen by the pushing of gas, liquid or pipeline transportation medium, thereby cleaning the pipe wall.

[0004] In the working process of the existing pigging device, the skin bowl of the pigging device is elastically sealed with the inner wall of the pipeline, mainly relying on sliding friction to advance, so as to clean the deposits produced in the pipeline. However, during the advancement of the pigging device, the amount of deposits accumulated at the front end of the pigging device gradually increases, causing the resistance to increase, the pigging device to be blocked, the pipeline cleaning to be affected, and the fluid transportation efficiency in the later period to be reduced. SUMMARY

[0005] The purpose of the present application is to provide a pulse blockage-removing pigging device capable of improving pigging efficiency.

[0006] To achieve the above purpose, the present application provides a pulse blockage-removing pigging device, which comprises:

[0007] a main body having an axially through channel, an end face of a first end of the main body being a guide conical surface, a plurality of liquid outlet holes being provided on the guide conical surface and being in communication with the channel, a first plug being connected to the first end of the main body, a ring groove being provided on the outer circumferential surface of the main body in the circumferential direction, and a skin bowl assembly being provided in the ring groove;

[0008] a pulse blockage-removing assembly provided in the channel, the pulse blockage-removing assembly comprising a pressure pulse generator and a pressure valve, an outlet of the pressure pulse generator being in communication with the liquid outlet hole, the pressure valve comprising a valve seat, a valve ball and a spring, a first end of the spring abutting against the pressure pulse generator, a central hole being provided on the valve seat, and the valve ball being able to seat and seal the central hole under the action of the spring.

[0009] The pulse blockage-removing pigging device as described above, wherein a flow blocking plate is provided between the pressure pulse generator and the valve seat, the first end of the spring is in contact with the flow blocking plate, and a plurality of flow holes are provided on the flow blocking plate and are in communication with the inlet of the pressure pulse generator.

[0010] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein a plurality of the flow holes are arranged at equal intervals along the circumference of the spring.

[0011] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein a flow passage is further arranged in the channel, and a first end of the flow passage abuts against the valve seat, the flow passage has a first hole and a second hole arranged side by side and not communicated with each other, the first hole is communicated with the central hole and the channel, and an end of the second hole close to the central hole is a closed end, and the second hole is arranged with a positioning transmitter.

[0012] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein a power supply mechanism is further arranged in the second hole, and the power supply mechanism is electrically connected with the positioning transmitter.

[0013] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein the open end of the second hole is detachably connected with a second plug.

[0014] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein the channel comprises a first through hole and a second through hole communicated with each other, the first through hole has a smaller inner diameter than the second through hole, a stepped surface is formed between the first through hole and the second through hole, the pulse blockage removing assembly is arranged in the second through hole, an inner pressure ring is connected in the second through hole, and the pulse blockage removing assembly is clamped between the stepped surface and the inner pressure ring.

[0015] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein a plurality of the liquid outlet holes are arranged at equal intervals along the circumference of the guide cone surface.

[0016] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein the leather cup assembly comprises a first leather cup, a first spacer ring, a second leather cup, a top ring, a third leather cup, a second spacer ring and a fourth leather cup arranged in sequence from the first end of the main body to the second end of the main body.

[0017] The pulse blockage removing pig device as claimed in any one of the preceding claims, wherein the ring groove extends to the second end of the main body, an outer pressure ring is sleeved on the outside of the main body, and the fourth leather cup abuts against the outer pressure ring.

[0018] Compared with the prior art, the pulse blockage removing pig device has the following advantages:

[0019] The pulse blockage removing pig device can make the pipeline conveying medium form a high-pressure pulse flow to impact the blockage through the pulse blockage removing assembly when the pigging process is blocked, so as to improve the pigging efficiency, reduce the probability of device blocking and pipeline blockage, and further improve the later transportation efficiency.

[0020] The pulse blockage-removing pig provided by the application can monitor the position of the pulse blockage-removing pig in real time through the positioning transmitter, so that the staff can master the pigging process.

[0021] The pulse blockage-removing pig provided by the application is clean and environmentally friendly and does not damage the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0022] The following drawings are only intended to illustrate and explain the application and do not limit the scope of the application. Among them:

[0023] Figure 1 is a structural schematic diagram of the pulse blockage-removing pig of the application;

[0024] Figure 2 is a structural schematic diagram of the main body;

[0025] Figure 3 is Figure 2 is a left view structural schematic diagram of the main body shown in the figure;

[0026] Figure 4 is a structural schematic diagram of the flow blocking plate;

[0027] Figure 5 is Figure 4 is a side view structural schematic diagram of the flow blocking plate shown in the figure;

[0028] Figure 6 is a structural schematic diagram of the flow body;

[0029] Figure 7 is Figure 6 is a left view structural schematic diagram of the flow body shown in the figure;

[0030] Figure 8 is Figure 6 is a right view structural schematic diagram of the flow body shown in the figure.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 100, main body; 110, channel; 111, first through hole; 112, second through hole; 113, stepped surface; 120, guide cone surface; 121, liquid outlet hole; 130, first plug; 140, ring groove; 150, inner pressure ring; 160, outer pressure ring;

[0033] 200, cup assembly; 210, first cup; 220, first spacer ring; 230, second cup; 240, top ring; 250, third cup; 260, second spacer ring; 270, fourth cup;

[0034] 300, pulse unblocking assembly; 310, pressure pulse generator; 320, pressure valve; 321, valve seat; 3211, center hole; 322, valve ball; 323, spring; 330, flow blocking plate; 331, flow hole;

[0035] 400, flow body; 410, first hole; 420, second hole; 421, second plug;

[0036] 500, positioning transmitter;

[0037] 600, power supply mechanism. DETAILED DESCRIPTION

[0038] In order to have a clearer understanding of the technical solutions, objectives and effects of the present application, the specific embodiments of the present application will be described in conjunction with the accompanying drawings. The use of adjectival or adverbial modifiers "inner" and "outer" is only for the convenience of relative reference between multiple groups of terms, and does not describe any specific directional limitation of the modified terms. In addition, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second", etc. can be explicitly or implicitly included one or more features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0039] As shown in Figure 1 , the present application provides a pulse unblocking pigging device, which comprises a main body 100 and a pulse unblocking assembly 300, wherein:

[0040] As shown in Figure 2 , the main body 100 has an axial through channel 110, the end face of the first end of the main body 100 is a guide conical surface 120, the guide conical surface 120 can guide the movement of the main body 100 in the pipeline, so that the pulse unblocking pigging device can smoothly move in the pipeline, a plurality of liquid outlet holes 121 are arranged on the guide conical surface 120 and communicated with the channel 110, a first plug 130 is connected to the first end of the main body 100, so that the pipeline conveying medium (gas or liquid) can only flow out through the liquid outlet hole 121, and the pipe wall is cleaned, a ring groove 140 is arranged on the outer circumferential surface of the main body 100 in the circumferential direction, and a rubber cup assembly 200 is arranged in the ring groove 140, the rubber cup assembly 200 can be fitted with the pipe wall to clean the deposits generated in the pipeline;

[0041] As shown in Figure 1As shown, the pulse blockage cleaning assembly 300 is arranged in the channel 110, the pulse blockage cleaning assembly 300 comprises a pressure pulse generator 310 and a pressure valve 320, the outlet of the pressure pulse generator 310 is communicated with the liquid outlet hole 121, that is, the pressure pulse generator 310 is communicated with the liquid outlet hole 121 through the channel 110, the pressure pulse generator 310 can make the flowing medium form a high-pressure pulse flow, the pressure valve 320 comprises a valve seat 321, a valve ball 322 and a spring 323, the first end of the spring 323 abuts against the pressure pulse generator 310, the valve seat 321 is in contact with the inner wall surface of the channel 110, the valve seat 321 is provided with a center hole 3211, the valve ball 322 can be seated in the center hole 3211 under the action of the spring 323, specifically, when the cleaning process is blocked, the pushing pressure increases, when the pushing pressure is greater than the elastic force of the spring 323, the valve ball 322 moves towards the pressure pulse generator 310 under the action of the pushing pressure, so that the center hole 3211 is opened, the pipeline conveying medium enters the pressure pulse generator 310 through the center hole 3211 of the valve seat 321, so that the pipeline conveying medium forms a high-pressure pulse flow, the formed high-pressure pulse flow is discharged through the liquid outlet hole 121 to impact the front end blockage of the pulse blockage cleaning pig, the blockage is dispersed and diluted, and at the same time the pulse blockage cleaning pig is carried forward, and after the pulse blockage cleaning pig moves forward, the pushing pressure decreases, the spring 323 overcomes the pushing pressure, the valve ball 322 seats the center hole 3211 of the valve seat 321, the pulse blockage is ended, and the pulse blockage cleaning pig continues to move forward to complete the pipeline cleaning.

[0042] The pulse blockage cleaning pig provided by the application can make the pipeline conveying medium form a high-pressure pulse flow to impact the blockage through the pulse blockage cleaning assembly 300 when the cleaning process is blocked, so that the cleaning efficiency is improved, the probability of device blocking and pipeline blockage is reduced, and the later transportation efficiency is improved.

[0043] Further, as shown in the figure, Figure 3 A plurality of liquid outlet holes 121 are arranged at equal intervals along the circumferential direction of the guide cone surface 120, so that the high-pressure pulse flow can be uniformly sprayed to the pipe wall, so that the blockage can be quickly dispersed and diluted, thereby further improving the cleaning efficiency.

[0044] Further, as shown in the figure, Figure 1As shown, the channel 110 includes the first through hole 111 and the second through hole 112 connected in sequence, the inner diameter of the first through hole 111 is smaller than that of the second through hole 112, so that a stepped surface 113 is formed between the first through hole 111 and the second through hole 112, the pulse cleaning assembly 300 is arranged in the second through hole 112, and the inner pressure ring 150 is connected in the second through hole 112. The inner pressure ring 150 is connected in the second through hole 112 by screwing, the pulse cleaning assembly 300 is clamped between the stepped surface 113 and the inner pressure ring 150, specifically, the outlet end of the pressure pulse generator 310 abuts against the stepped surface 113, the first end of the valve seat 321 abuts against the inlet end of the pressure pulse generator 310, and the second end of the valve seat 321 abuts against the end face of the inner pressure ring 150, that is, the pulse cleaning assembly 300 is limited in the second through hole 112 by the inner pressure ring 150, so as to ensure that the pulse nozzle assembly will not fall off from the second through hole 112 during use.

[0045] Of course, the pulse cleaning assembly 300 can also be positioned in the second through hole 112 by the connecting pin, which is a prior art and will not be described here.

[0046] Further, as shown in the Figure 1 The cup assembly 200 includes the first cup 210, the first spacer ring 220, the second cup 230, the top ring 240, the third cup 250, the second spacer ring 260 and the fourth cup 270 arranged in sequence from the first end of the main body 100 to the second end of the main body 100, that is, two groups of cups are arranged at both ends of the main body 100, the pipe wall is cleaned in sequence by the first cup 210, the second cup 230, the third cup 250 and the fourth cup 270, and the pipe wall is cleaned four times, so that the cleanliness of the pipe wall is improved.

[0047] Further, as shown in the Figure 1 The ring groove 140 extends to the second end of the main body 100, the outer pressure ring 160 is sleeved outside the main body 100, the outer pressure ring 160 is connected with the main body 100 by screwing, the fourth cup 270 abuts against the outer pressure ring 160, and by adjusting the position of the outer tooth ring, the first cup 210, the first spacer ring 220, the second cup 230, the top ring 240, the third cup 250, the second spacer ring 260 and the fourth cup 270 can be connected in sequence, so that the first cup 210, the second cup 230, the third cup 250 and the fourth cup 270 can effectively contact the pipe wall.

[0048] Further, as shown in the Figure 4As shown, the pressure pulse generator 310 is provided with a flow blocking plate 330 between the pressure pulse generator 310 and the valve seat 321, that is, the flow blocking plate 330 is clamped between the pressure pulse generator 310 and the valve seat 321, the first end of the spring 323 is connected with the flow blocking plate 330, the flow blocking plate 330 is provided with a plurality of flow holes 331 connected with the inlet of the pressure pulse generator 310, and the flow blocking plate 330 is provided, so that the connection between the spring 323 and the pressure pulse generator 310 is simple.

[0049] Further, as shown in Figure 5 , a plurality of flow holes 331 are arranged at equal intervals along the circumference of the spring 323, so that the pipeline conveying medium can enter the pressure pulse generator 310 through the plurality of flow holes 331 uniformly, so that the pressure pulse generator 310 is uniformly stressed.

[0050] Further, as shown in Figure 1 , Figure 6 , Figure 7 and Figure 8 , the channel 110 is further provided with a flow body 400, the first end of the flow body 400 abuts against the valve seat 321, the flow body 400 has a first hole 410 and a second hole 420 arranged side by side and not connected with each other, the first hole 410 is connected with the center hole 3211 and the channel 110, specifically, the flow body 400 is arranged in the second through hole 112, the first hole 410 is connected with the second through hole 112 of the center hole 3211, one end of the second hole 420 close to the center hole 3211 is a closed end, the second hole 420 is provided with a positioning transmitter 500, the positioning transmitter 500 can send the current position of the pulse unblocking pigging device in real time, so as to facilitate the staff to master the pigging progress.

[0051] Further, as shown in Figure 1 , the second hole 420 is further provided with a power supply mechanism 600, the power supply mechanism 600 can be a battery, the power supply mechanism 600 is electrically connected with the positioning transmitter 500, and the power supply mechanism 600 can supply power to the positioning transmitter 500, so that the positioning transmitter 500 can work continuously.

[0052] Further, as shown in Figure 1 , the open end of the second hole 420 is detachably connected with a second plug 421, the second plug 421 is connected in the second hole 420 through threads, the positioning transmitter 500 and the power supply mechanism 600 are limited in the second hole 420 through the second plug 421, so as to ensure that the positioning transmitter 500 and the power supply mechanism 600 will not fall off from the second hole 420 during the unblocking process.

[0053] In summary, the pulse deblocking pigging device provided by the present application can make the pipeline conveying medium form a high-pressure pulse flow to impact the blockage through the pulse blockage removing assembly when the pigging process is blocked, thereby improving the pigging efficiency, reducing the probability of device blocking and pipeline blocking, and further improving the later transportation efficiency.

[0054] The pulse deblocking pigging device provided by the present application can monitor the position of the pulse deblocking pigging device in real time through the positioning transmitter, so as to facilitate the staff to master the pigging progress.

[0055] The pulse deblocking pigging device provided by the present application is clean and environmentally friendly, and does not damage the pipeline.

[0056] The above description is only a specific embodiment of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present application shall fall within the scope of the present application. It should be noted that the components of the present application are not limited to the above overall application, and the technical features described in the specification of the present application can be selected alone or combined with multiple features for use, therefore, the present application naturally covers other combinations and specific applications related to the present application.

Claims

1. A pigging device for unblocking a pipeline, characterized in that, The pulse blockage removing pig device comprises: a main body having an axial through channel, an end face of a first end of the main body being a guide cone face, a plurality of liquid outlet holes being provided on the guide cone face and communicating with the channel, a first end of the main body being connected with a first plug, a circumferential surface of the main body being provided with a ring groove in the circumferential direction, and a cup assembly being provided in the ring groove; a pulse blockage removing assembly provided in the channel, the pulse blockage removing assembly comprising a pressure pulse generator and a pressure valve, an outlet of the pressure pulse generator communicating with the liquid outlet hole, the pressure valve comprising a valve seat, a valve ball and a spring, a first end of the spring abutting against the pressure pulse generator, the valve seat being provided with a central hole, and the valve ball being capable of sealing the central hole under the action of the spring; a flow blocking baffle being provided between the pressure pulse generator and the valve seat, the first end of the spring abutting against the flow blocking baffle, the flow blocking baffle being provided with a plurality of flow holes communicating with the inlet of the pressure pulse generator; the channel further being provided with a flow body, a first end of the flow body abutting against the valve seat, the flow body having a first hole and a second hole arranged side by side and not communicating with each other, the first hole communicating the central hole and the channel, an end of the second hole close to the central hole being a closed end, and the second hole being provided with a positioning transmitter; the flow body and the valve seat jointly defining a communication cavity, the central hole and the first hole communicating through the communication cavity, the diameter of the communication cavity being greater than the diameter of the first hole, the communication cavity and the second hole not communicating with each other, the diameter of the inlet of the communication cavity being equal to the diameter of the first hole, and the first hole being a cylindrical hole located on one side of the second hole.

2. The pulse blockage removing pig device according to claim 1, wherein the plurality of flow holes are arranged at equal intervals in the circumferential direction of the spring.

3. The pulse blockage removing pig device according to claim 1, wherein the second hole is further provided with a power supply mechanism, and the power supply mechanism is electrically connected with the positioning transmitter.

4. The pulse blockage removing pig device according to claim 3, wherein the open end of the second hole is detachably connected with a second plug.

5. The pulse blockage removing pig device according to claim 1, wherein the channel comprises a first through hole and a second through hole communicating with each other, the inner diameter of the first through hole is smaller than the inner diameter of the second through hole, a stepped surface is formed between the first through hole and the second through hole, the pulse blockage removing assembly is arranged in the second through hole, an internal pressure ring is connected in the second through hole, and the pulse blockage removing assembly is clamped between the stepped surface and the internal pressure ring.

6. The pulse blockage removing pig device according to claim 1, wherein the plurality of liquid outlet holes are arranged at equal intervals in the circumferential direction of the guide cone face.

7. The pulse blockage removing pig device according to any one of claims 1 to 6, wherein The skin bowl assembly comprises, from the first end of the main body to the second end of the main body in sequence, a first skin bowl, a first partition ring, a second skin bowl, a top ring, a third skin bowl, a second partition ring and a fourth skin bowl.

8. The pulse unblocking pigging device according to claim 7, characterized in that, The ring groove extends to the second end of the main body, an outer pressure ring is sleeved on the outside of the main body, and the fourth skin bowl abuts against the outer pressure ring.

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