A practical degasser with high efficiency and exhaust system

Abstract

The present invention discloses a practical degasser with an exhaust system capable of efficient degassing, comprising a submerged slurry pump, a slurry inlet pipe, a V-shaped collecting tank body, a slurry outlet, a gas-liquid separation chamber, a normal pressure air inlet, an exhaust port, and an exhaust fan. The submerged slurry pump is connected to the slurry inlet pipe via the slurry inlet, and the slurry inlet pipe extends to the interior of the V-shaped collecting tank body. A guide plate is circumferentially installed on the outer side of the top end of the slurry inlet pipe, a disc-shaped impact plate is arranged directly above the guide plate, a "gate"-shaped moving plate is welded to the upper surface of the impact plate, and a rack block is longitudinally arranged on the upper side of the "gate"-shaped moving plate. Generally speaking, the present invention has the advantages of large drilling fluid processing capacity, high degassing rate, simple use and maintenance, and long service life.

Description

Technical Field

[0001] The invention belongs to the field of petroleum drilling equipment and relates to a practical degasser with an exhaust system capable of efficient degassing. Background Art

[0002] At present, the degassers in the domestic oil drilling industry can be divided into two types according to their working principles: atmospheric pressure degassers and vacuum degassers. Most of the domestic products are vacuum degassers. The vacuum degassers are mainly composed of vacuum pumps, main motors, vacuum tanks, dispersion plates, impellers, volutes, slurry inlet pipes, etc. The working principle is that the air in the vacuum tank is sucked by the vacuum pump. When the vacuum degree reaches a certain level, the gas-containing mud goes up through the slurry inlet pipe and enters the upper part of the rotating impeller, and is ejected through the mud jet port, and then distributed on the dispersion plate. Under the action of vacuum, some bubbles burst, and the gas is pumped out of the vacuum tank by the vacuum pump. Due to the different working principles of vacuum degassers and atmospheric pressure degassers, the appearance structure and components of the equipment are very different. Compared with vacuum degassers, atmospheric pressure degassers have the advantages of simple structure, small tank surface area, high degassing efficiency, simple operation, and convenient maintenance. It is an ideal mud solid phase controlled degassing equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a practical degasser with an exhaust system that can efficiently degas. The invention has the advantages of simple structure, small tank surface area, high degassing efficiency, simple operation, convenient maintenance, etc., and has extremely high use value.

[0004] The object of the present invention is achieved as follows: a practical degasser with an exhaust system capable of efficient degassing, comprising a submerged slurry pump, a slurry inlet pipeline, a V-shaped collecting tank, a slurry outlet, a gas-liquid separation chamber, a normal pressure air inlet, an exhaust port, and an exhaust fan, wherein the submerged slurry pump is connected to the slurry inlet pipeline through the slurry inlet, the slurry inlet pipeline extends to the inside of the V-shaped collecting tank, a guide plate is circumferentially installed on the outer side of the top end of the slurry inlet pipeline, a disc-shaped impact plate is arranged directly above the guide plate, a "door"-shaped moving plate is welded on the upper surface of the impact plate, and the upper side of the "door"-shaped moving plate is located at A rack block is longitudinally arranged, a slurry outlet is arranged at the lower position of the side of the V-shaped collecting tank body, a gas-liquid separation chamber is arranged on the top of the V-shaped collecting tank body, a normal pressure air inlet is arranged on the side wall of the gas-liquid separation chamber, a fixed plate is installed on the inner side wall of the gas-liquid separation chamber, the longitudinal side surface of the fixed plate is arranged as a rack-like structure, which meshes with the rack block on the "door" type moving plate, a long hole is longitudinally arranged at the middle position of the fixed plate, and the long hole is connected to the "door" type moving plate by bolts, an exhaust port is arranged on the top of the gas-liquid separation chamber, and an exhaust fan is installed on the upper part of the exhaust port.

[0005] A liquid collecting plate is arranged between the V-shaped collecting tank body and the gas-liquid separation chamber, and a vent is arranged in the middle of the liquid collecting plate.

[0006] Two guide plates are arranged one above the other, and the inner diameter of the guide plate is equal to the outer diameter of the slurry inlet pipe.

[0007] The number of the rack blocks and the fixed plates is set to 2, and both are arranged at the two sides of the "door" type moving plate.

[0008] The normal pressure air inlet is arranged at half the height of the side wall of the gas-liquid separation chamber, and a filter is installed at the mouth of the normal pressure air inlet.

[0009] A guide plate is arranged on the side wall of the gas-liquid separation chamber, and the guide plate is inclined upward, and the inclination angle is set to 20-40°.

[0010] The exhaust fan and the submerged slurry pump are both electrically connected to the electric control box.

[0011] The submersible slurry pump, slurry inlet pipeline, V-shaped collecting tank, slurry outlet, gas-liquid separation chamber, normal pressure air inlet, exhaust port and exhaust fan are all sprayed with marine heavy anti-corrosion paint.

[0012] The beneficial effects of the present invention are as follows: First, the submersible slurry pump can throw the mud through the slurry inlet pipe into the V-shaped collection tank body through the action of the motor and the impeller in the pump. Second, under the joint action of the guide plate and the impact plate, the mud bubbles thrown out of the slurry inlet pipe are broken after impacting the surface, and the gas overflows. Third, the "door" type moving plate drives the impact plate to move up and down, and by increasing or decreasing the distance between the mouth of the slurry inlet pipe and the impact plate, the impact force of the mud hitting the impact plate is changed, thereby realizing the change of the degassing rate in the mud, improving the degassing rate and enhancing the processing capacity of the equipment. Fourth, the rack block on the "door" type moving plate is meshed with the rack-like structure on the side of the fixed plate, which is convenient for adjustment and well fixes the "door" type moving plate on the fixed plate. Fifth, a liquid collecting plate is arranged between the V-shaped collection tank body and the gas-liquid separation chamber to prevent the mud and the wet air in the mud from entering the gas-liquid separation chamber and affecting the degassing efficiency. Sixth, a filter is installed at the mouth of the normal pressure air inlet to prevent large particles from entering from the normal pressure air inlet and affecting the performance of the equipment. The airflow entering from the normal pressure air inlet can prevent the mud in the gas-liquid separation chamber from moving upward. Seventh, the submersible slurry pump, slurry inlet pipeline, V-shaped collection tank, slurry outlet, gas-liquid separation chamber, normal pressure air inlet, exhaust port, and exhaust fan are all sprayed with marine heavy anti-corrosion paint to extend the service life of the equipment. Eighth, a guide plate is set to facilitate exhaust. Ninth, a double-layer guide plate is set. On the one hand, it makes the guiding effect better and prevents the slurry inlet pipeline from deviating; on the other hand, when the uppermost guide plate is higher than the liquid outlet of the slurry inlet pipeline, double-layer spraying can be achieved, which is more conducive to the discharge of gas in the mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the enlarged structure of the "door" type moving plate of the present invention.

[0016] In the figure: 1, submerged slurry pump 2, slurry inlet pipe 3, V-shaped collecting tank 4, slurry outlet 5, gas-liquid separation chamber 6, normal pressure air inlet 7, exhaust port 8, exhaust fan 9, guide plate 10, impact plate 11, "door" type moving plate 12, rack block 13, fixed plate 14, long hole 15, filter screen 16, electric control box 17, liquid collecting plate 18, guide plate. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0018] Example 1

[0019] As attached Figure 1-3 As shown, a practical degasser with an efficient degassing and exhaust system comprises a submerged slurry pump 1, a slurry inlet pipe 2, a V-shaped collecting tank body 3, a slurry outlet 4, a gas-liquid separation chamber 5, a normal pressure air inlet 6, an exhaust port 7, and an exhaust fan 8. The submerged slurry pump 1 is connected to the slurry inlet pipe 2 through the slurry inlet, and the slurry inlet pipe 2 extends to the inside of the V-shaped collecting tank body 2. A guide plate 9 is circumferentially installed on the outer side of the top end of the slurry inlet pipe 2, and a disc-shaped impact plate 10 is arranged directly above the guide plate 9. A "door"-shaped moving plate 11 is welded to the upper surface of the impact plate 10, and a rack block is longitudinally arranged on the upper side of the "door"-shaped moving plate 11. 12, a slurry outlet 4 is arranged at the lower position of the side of the V-shaped collecting tank body 3, a gas-liquid separation chamber 5 is arranged at the top of the V-shaped collecting tank body 3, a normal pressure air inlet 6 is arranged at the side wall of the gas-liquid separation chamber, a fixing plate 13 is installed on the inner side wall of the gas-liquid separation chamber 5, the longitudinal side surface of the fixing plate 13 is arranged as a rack-like structure, which is meshed with the rack block 12 on the "door" type moving plate 11, a long hole 14 is longitudinally arranged at the middle position of the fixing plate 13, and the long hole 14 is connected to the "door" type moving plate 11 by bolts, an exhaust port 7 is arranged on the top of the gas-liquid separation chamber 5, and an exhaust fan 8 is installed on the upper part of the exhaust port 7.

[0020] A liquid collecting plate 17 is arranged between the V-shaped collecting tank body 3 and the gas-liquid separation chamber 5 , and a vent is arranged in the middle of the liquid collecting plate 17 .

[0021] The guide plates 9 are provided with two upper and lower parts, and the inner diameter of the guide plates 9 is equal to the outer diameter of the slurry inlet pipe 2 .

[0022] The number of the rack blocks 12 and the fixing plates 13 are both set to two, and both are arranged at the two sides of the “door” type moving plate 11 .

[0023] The normal pressure air inlet 6 is arranged at half the height of the side wall of the gas-liquid separation chamber 5 , and a filter screen 15 is installed at the mouth of the normal pressure air inlet 6 .

[0024] A guide plate 18 is disposed on the side wall of the gas-liquid separation chamber 5 . The guide plate 18 is tilted upward, and the tilt angle is set to 30°.

[0025] The exhaust fan 8 and the submersible slurry pump 1 are both electrically connected to the electric control box 16 .

[0026] The submersible slurry pump 1, slurry inlet pipe 2, V-shaped collecting tank 3, slurry outlet 4, gas-liquid separation chamber 5, normal pressure air inlet 6, exhaust port 7 and exhaust fan 8 are all sprayed with marine heavy anti-corrosion paint.

[0027] When the present invention is used: before oil drilling, the exploration personnel will make an assessment of the mud in advance, and adjust the height of the impact plate based on the assessment. First, the gas-liquid separation chamber is opened. If the mud is relatively viscous or there are many bubbles in the mud, after loosening the bolts, the bolts in the long holes of the fixed plate are moved downward to drive the "door" type moving plate to move downward, and the impact plate moves downward, thereby reducing the distance between the mouth of the slurry inlet pipe and the impact plate, increasing the collision between the mud and the impact plate, and improving the degassing rate; if the mud has a relatively low viscosity or there are few bubbles, the distance between the mouth of the slurry inlet pipe and the impact plate is correspondingly increased, and the collision between the mud and the impact plate is appropriately reduced; when the adjustment is completed, the gas-liquid separation chamber is installed, and then the electric control box is started, and the electric control box starts the exhaust The machine and the submersible slurry pump, the submersible slurry pump centrifugalizes the mud, and the exhaust fan forms an air circulation inside the slurry inlet pipe, the V-shaped collecting tank and the gas-liquid separation chamber. The mud is thrown out from the slurry inlet pipe, collides with the impact plate and the guide plate, the liquid surface is broken, the gas overflows and moves upward, and is discharged from the exhaust port under the action of the exhaust fan. A large part of the mud is thrown into the V-shaped collecting tank and flows out from the slurry outlet of the V-shaped collecting tank, and another small part is thrown into the gas-liquid separation chamber. Because the gas-liquid separation chamber is connected to the normal pressure air inlet, this small part of the mud no longer moves upward, and after colliding with the inner wall of the gas-liquid separation chamber, it flows into the inner wall of the V-shaped collecting tank along the inner wall of the gas-liquid separation chamber, and finally flows out from the slurry outlet. The air flowing in from the normal pressure air inlet will also be discharged along the exhaust port.

[0028] In general, the present invention has the advantages of large mud treatment capacity, high degassing rate, simple use and maintenance, and long service life.

Claims

1. A practical degasser with efficient degassing and exhaust system, comprising a submerged slurry pump, a slurry inlet pipeline, a V-shaped collection tank, a slurry outlet, a gas-liquid separation chamber, a normal pressure air inlet, an exhaust port, and an exhaust fan, characterized in that: The submersible slurry pump is connected to the slurry inlet pipe through the slurry inlet, and the slurry inlet pipe extends to the inside of the V-shaped collecting tank body. A guide plate is circumferentially installed on the outer side of the top end of the slurry inlet pipe, and a disc-shaped impact plate is arranged directly above the guide plate. A "door"-shaped moving plate is welded on the upper surface of the impact plate, and a rack block is longitudinally arranged at the upper side position of the "door"-shaped moving plate. A slurry outlet is arranged at the lower position of the side of the V-shaped collecting tank body, and a gas-liquid separation chamber is arranged on the top of the V-shaped collecting tank body. A normal pressure air inlet is arranged on the side wall of the gas-liquid separation chamber. A fixed plate is installed on the side wall, and the longitudinal side surface of the fixed plate is set as a rack-like structure, which is meshed with the rack block on the "door" type moving plate. A long hole is longitudinally set at the middle position of the fixed plate, and the long hole is connected to the "door" type moving plate through bolts. An exhaust port is set at the top of the gas-liquid separation chamber, and an exhaust fan is installed on the upper part of the exhaust port; a liquid collecting plate is set between the V-shaped collecting tank body and the gas-liquid separation chamber, and a vent is set in the middle of the liquid collecting plate; a guide plate is set on the side wall of the gas-liquid separation chamber, and the guide plate is inclined upward, and the inclination angle is set to 20~40°.

2. A practical degasser with high efficiency degassing and exhaust system according to claim 1, characterized in that: Two guide plates are arranged one above the other, and the inner diameter of the guide plate is equal to the outer diameter of the slurry inlet pipe.

3. A practical degasser capable of efficient degassing with an exhaust system according to claim 1, characterized in that: The number of the rack blocks and the fixed plates is set to 2, and both are arranged at the two sides of the "door" type moving plate.

4. A practical degasser capable of high-efficiency degassing with an exhaust system according to claim 1, characterized in that: The normal pressure air inlet is arranged at half the height of the side wall of the gas-liquid separation chamber, and a filter is installed at the mouth of the normal pressure air inlet.

5. A practical degasser capable of high-efficiency degassing with an exhaust system according to claim 1, characterized in that: The exhaust fan and the submerged slurry pump are both electrically connected to the electric control box.

6. A practical degasser capable of high-efficiency degassing with an exhaust system according to claim 1, characterized in that: The submersible slurry pump, slurry inlet pipeline, V-shaped collecting tank, slurry outlet, gas-liquid separation chamber, normal pressure air inlet, exhaust port and exhaust fan are all sprayed with marine heavy anti-corrosion paint.

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