Inner cover type airproof device

Abstract

The utility model discloses an inner cover type gas prevention device which comprises a device body and a gas removal assembly. According to the inner cover type gas-proof device, after being sucked into the discharging outer sleeve through the suction hole, gas-containing liquid falls between the discharging outer sleeve and the central pipe due to gravity, and then falls to the upper ends of the first umbrella plate and the second umbrella plate on the outer side of the inner concave part firstly, and then the gas-containing liquid is discharged out of the central pipe. Gas-containing liquid can be divided into multiple groups of small-flow liquid through the first umbrella plate and the second umbrella plate, then gas in the liquid is separated for the first time, and the multiple groups of small-flow liquid are gathered through the first guide cone and the second guide cone on the upper side and the lower side of the bottom in the falling process so as to rapidly penetrate through the outer end of the external expansion ring after being gathered. And after the liquid quickly penetrates through the outer expansion ring, the liquid falls out of the movable barrel at the lower end, bubbles in the liquid are broken through the sharp needles arranged at the outer end of the movable barrel, and then the gas contained in the liquid is separated.

Description

Technical Field

[0001] The utility model relates to the technical field of oil extraction, in particular to an inner cover type air-proof device. Background Art

[0002] The inner cover type gas prevention device is a device used for underground gas prevention in the field of mechanical oil production in oil extraction. The working principle of the inner cover type gas prevention device is mainly based on the flow of liquid and the separation of bubbles to separate the gas in the liquid, thereby achieving the purpose of gas prevention in the oil pump.

[0003] The existing inner cover type gas prevention device requires a long separation outer sleeve during use, and it is inconvenient to install a multi-layer gas breaking structure and a gas discharge channel after separation between the separation outer sleeve and the central tube. Therefore, we propose an inner cover type gas prevention device. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] An inner cover type air-proof device comprises: a device body and a degassing assembly; the device body comprises a discharge outer sleeve at the outer end, a central tube fixedly installed in the discharge outer sleeve, suction holes arranged at the outer end of the discharge outer sleeve, an external outer sleeve fixedly installed at the bottom of the discharge outer sleeve, a discharge valve group installed at the top of the discharge outer sleeve, and a liquid outlet arranged at the top of the central tube; the degassing assembly comprises an inner recess provided at the upper end of the central tube in the discharge outer sleeve, a first umbrella plate and a second umbrella plate fixedly installed at the upper and lower ends of the inner recess respectively, circular holes arranged in the first umbrella plate and the second umbrella plate, a first guide cone and a second guide cone fixedly installed at the upper and lower ends of the outer side of the central tube respectively, an outer expansion ring fixedly installed at the outer end of the central tube at the bottom of the second guide cone, a plurality of fixed shafts arranged and fixed at the upper and lower outer ends of the central tube at the bottom of the outer expansion ring, a movable cylinder movably sleeved at the outer ends of the fixed shafts, and sharp needles arranged and fixed at the outer ends of the movable cylinders.

[0007] Preferably, a first air hole is further provided at the center of the first umbrella plate, and a first connecting rod is arranged and fixedly installed between the outer end of the first air hole and the inner recess.

[0008] Preferably, a drainage port is reserved on the outer side of the lower portion of the second umbrella plate.

[0009] Preferably, second air holes are arranged on the top of the first guide cone.

[0010] Preferably, a third air hole is further provided on the top of the second guide cone, and a second connecting rod is arranged and fixedly installed between the outer end of the third air hole and the central tube.

[0011] Preferably, fourth air holes are arranged and opened through the outer expansion ring.

[0012] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0013] 1. In the present invention, after the gas-containing liquid is sucked into the discharge outer sleeve through the suction hole, it will fall between the discharge outer sleeve and the central tube due to gravity. After first falling to the upper ends of the first umbrella plate and the second umbrella plate outside the inner recess, the gas-containing liquid can be divided into multiple groups of small flows by the first umbrella plate and the second umbrella plate, thereby initially separating the gas therein. During the falling process, the multiple groups of small flow liquids will be gathered by the first guide cone and the second guide cone on the upper and lower sides of the bottom, so as to quickly pass through the outer end of the outer expansion ring after being gathered, so as to separate the gas therein again at a faster flow rate. After quickly passing through the outer end of the outer expansion ring, the liquid will fall to the outside of the movable cylinder at the lower end, and pass through the sharp needles arranged at the outer end of the movable cylinder to break the bubbles in the liquid, thereby separating the gas contained therein. Subsequently, after the separation and bubble breaking are accelerated by multiple groups of first guide cones, second guide cones, outer expansion rings and movable cylinders, the degassing effect of the gas-containing liquid can be improved.

[0014] 2. In the present invention, the first air hole and the circular hole in the first umbrella plate, the circular hole in the second umbrella plate, the second air hole at the inner end of the first guide cone, the third air hole at the inner end of the second guide cone, and the fourth air hole in the outer expansion ring can also reserve space for gas to rise in the liquid downstream cavity at the outer end of the central tube, so as to better discharge the gas in the liquid after separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structural diagram of the utility model;

[0016] Figure 2 It is a side sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified view of middle A;

[0018] Figure 4 For this utility model Figure 2 Enlarged view of middle B;

[0019] Figure 5 For this utility model Figure 2 Enlarged view of C in the middle.

[0020] Reference numerals:

[0021] 100, device body; 101, discharge outer sleeve; 102, center pipe; 103, suction hole; 104, external outer sleeve; 105, discharge valve group; 106, liquid outlet;

[0022] 200, degassing assembly; 201, inner recess; 202, first umbrella plate; 203, second umbrella plate; 204, circular hole; 205, first guide cone; 206, second guide cone; 207, outer expansion ring; 208, fixed shaft; 209, movable cylinder; 210, pointed needle; 211, first air hole; 212, first connecting rod; 213, drain port; 214, second air hole; 215, third air hole; 216, second connecting rod; 217, fourth air hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0024] The following describes an inner cover type air-proof device provided by some embodiments of the present invention in conjunction with the accompanying drawings.

[0025] Example 1:

[0026] Combine Figure 1-5As shown, the utility model provides an inner cover type air-proof device, comprising: a device body 100, a degassing assembly 200; the device body 100 comprises a discharge outer sleeve 101 at the outer end, a central tube 102 fixedly installed in the discharge outer sleeve 101, suction holes 103 arranged at the outer end of the discharge outer sleeve 101, an external outer sleeve 104 fixedly installed at the bottom of the discharge outer sleeve 101, a discharge valve group 105 installed at the top of the discharge outer sleeve 101, and a liquid outlet 106 arranged at the top of the central tube 102; the degassing assembly 200 comprises an inner recess 201 provided at the upper end of the central tube 102 in the discharge outer sleeve 101, a first umbrella plate 202 and a second umbrella plate 203 fixedly installed at the upper and lower ends of the inner recess 201, circular holes 204 arranged in the first umbrella plate 202 and the second umbrella plate 203, a first guide cone 205 and a second guide cone 206 fixedly installed at the upper and lower ends of the outer side of the central tube 102, Cone 206, an outer expansion ring 207 fixedly installed on the outer end of the central tube 102 at the bottom of the second guide cone 206, multiple groups of fixed shafts 208 arranged and fixed at the upper and lower outer ends of the central tube 102 at the bottom of the outer expansion ring 207, movable cylinders 209 movably sleeved on the outer ends of the fixed shafts 208, and sharp needles 210 arranged and fixed at the outer ends of the movable cylinders 209. A first air hole 211 is also provided at the center of the first umbrella plate 202, and a first connecting rod 212 is arranged and fixedly installed between the outer end of the first air hole 211 and the inner recessed portion 201. A drainage port 213 is also reserved on the outer side of the lower part of the second umbrella plate 203. A second air hole 214 is also arranged on the top of the first guide cone 205, and a third air hole 215 is also provided on the top of the second guide cone 206. A second connecting rod 216 is also arranged and fixedly installed between the outer end of the third air hole 215 and the central tube 102. A fourth air hole 217 is also arranged and opened through the outer expansion ring 207.

[0027] Specifically, the inner cover type air-proof device is a device used for underground air prevention in the field of mechanical oil production in oil extraction, and the working principle of the inner cover type air-proof device is mainly based on the flow of liquid and the separation of bubbles, so as to separate the gas in the liquid, thereby achieving the purpose of air prevention in the oil pump; after the gas-containing liquid in this inner cover type air-proof device is sucked into the discharge outer sleeve 101 through the suction hole 103, it will fall between the discharge outer sleeve 101 and the center pipe 102 due to gravity, and after first falling to the upper ends of the first umbrella plate 202 and the second umbrella plate 203 outside the inner recess 201, the gas-containing liquid can be divided into multiple groups of small flow rates by the first umbrella plate 202 and the second umbrella plate 203, and then the gas therein can be initially separated, and the multiple groups of small flow rate liquids will be gathered by the first guide cone 205 and the second guide cone 206 on the upper and lower sides of the bottom during the fall, so as to quickly pass through the outer end of the outer expansion ring 207 after gathering, so as to pass through The gas inside is separated again at a faster flow rate. After the liquid quickly passes through the outer expansion ring 207, it will fall to the outside of the movable cylinder 209 at the lower end, and the bubbles in the liquid will be broken by the sharp needles 210 arranged at the outer end of the movable cylinder 209, thereby separating the gas contained therein. Subsequently, after the multiple groups of first guide cones 205, second guide cones 206, outer expansion rings 207 and movable cylinders 209 accelerate the separation and break the bubbles, so as to improve the degassing effect on the gas-containing liquid. At the same time, the first air hole 211 and the circular hole 204 in the first umbrella plate 202, the circular hole 204 in the second umbrella plate 203, the second air hole 214 at the inner end of the first guide cone 205, the third air hole 215 at the inner end of the second guide cone 206, and the fourth air hole 217 in the outer expansion ring 207 can also reserve gas rising space in the liquid downstream cavity at the outer end of the central tube 102, so that the gas in the liquid can be better discharged after separation.

[0028] The working principle and use process of this utility model:

[0029] When the gas-containing liquid enters the discharge outer sleeve 101 through the suction hole 103 at the outer end of the discharge outer sleeve 101, it will fall due to gravity between the inner end of the discharge outer sleeve 101 and the central tube 102. When the gas-containing liquid falls, it will first fall onto the first umbrella plate 202 and the second umbrella plate 203 at the outer end of the lower inner recess 201, so as to pass through the multiple groups of circular holes 204 in the first umbrella plate 202 and the second umbrella plate 203, and divide the falling gas-containing liquid into multiple groups of small flow rates, and separate part of the gas therein during the diversion. The multiple groups of small flow gas-containing liquids will continue to fall, and converge through the first guide cone 205 and the second guide cone 206 at the bottom, so as to quickly pass through the outer end of the outer expansion ring 207 at the bottom after convergence, so as to separate part of the liquid on its inner wall during the aggregation and rapid flow rate. After the ring 207 is expanded, the gas will fall to the outer ends of the multiple groups of movable cylinders 209 at the bottom of the outer expansion ring 207, and then pass through the sharp needles 210 arranged at the outer ends of the movable cylinders 209 to break the bubbles in the gas-containing liquid to separate the gas contained therein again. Subsequently, after multiple groups of convergence, acceleration and breaking, it will flow to the bottom of the external outer sleeve 104, and then be discharged from the top through the central tube 102. The gas separated in the external outer sleeve 104 can pass through the fourth air hole 217 in the outer expansion ring 207, the third air hole 215 in the second guide cone 206, the second air hole 214 in the first guide cone 205, the circular hole 204 in the second umbrella plate 203, the first air hole 211 in the first umbrella plate 202 and the circular hole 204 to form a flow channel, so as to be discharged through the discharge valve group 105 after rising to the top of the discharge outer sleeve 101.

[0030] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An inner cover type air proof device, characterized in that: include: Device body (100), degassing assembly (200); The device body (100) comprises a discharge outer sleeve (101) at the outer end, a central tube (102) fixedly installed in the discharge outer sleeve (101), suction holes (103) arranged at the outer end of the discharge outer sleeve (101), an external outer sleeve (104) fixedly installed at the bottom of the discharge outer sleeve (101), a discharge valve group (105) installed at the top of the discharge outer sleeve (101), and a liquid outlet (106) provided at the top of the central tube (102); The degassing assembly (200) comprises an inner recess (201) provided at the upper end of a central tube (102) in a discharge outer sleeve (101), a first umbrella plate (202) and a second umbrella plate (203) fixedly mounted at the upper and lower ends of the inner recess (201), circular holes (204) arranged in the first umbrella plate (202) and the second umbrella plate (203), a first guide cone (205) and a second guide cone (206) fixedly mounted at the upper and lower ends of the outer side of the central tube (102), an outer expansion ring (207) fixedly mounted at the outer end of the central tube (102) at the bottom of the second guide cone (206), a plurality of fixed shafts (208) arranged and fixedly mounted at the upper and lower outer ends of the central tube (102) at the bottom of the outer expansion ring (207), a movable cylinder (209) movably sleeved at the outer ends of the fixed shafts (208), and sharp needles (210) arranged and fixedly mounted at the outer ends of the movable cylinder (209).

2. The inner cover type air proof device according to claim 1, characterized in that: A first air hole (211) is further provided at the center of the first umbrella plate (202), and a first connecting rod (212) is arranged and fixedly installed between the outer end of the first air hole (211) and the inner recess (201).

3. The inner cover type air proof device according to claim 1, characterized in that: A drainage port (213) is also reserved on the outer side of the lower portion of the second umbrella plate (203).

4. The inner cover type air proof device according to claim 1, characterized in that: Second air holes (214) are also arranged on the top of the first guide cone (205).

5. The inner cover type air proof device according to claim 1, characterized in that: A third air hole (215) is also provided at the top of the second guide cone (206), and a second connecting rod (216) is arranged and fixedly installed between the outer end of the third air hole (215) and the central tube (102).

6. The inner cover type air proof device according to claim 1, characterized in that: The outer expansion ring (207) is further provided with fourth air holes (217) arranged therein and extending therethrough.

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