Oil drainage device for oil exploitation

Abstract

The utility model relates to the technical field of oil exploitation, in particular to an oil drainage device for oil exploitation, which comprises a coupling, a connecting pipe and a main pipe, the top of the coupling is provided with the connecting pipe, the top of the connecting pipe is provided with the main pipe, and the end parts of the coupling and the connecting pipe are fixedly provided with sealing assemblies. A control assembly is arranged in the connecting pipe; the sealing assembly comprises a fixing seat, the end of the coupling and the end of the connecting pipe are connected with the fixing seat in a welded mode, a sealing sleeve corresponding to the connecting pipe is connected into the fixing seat in a welded mode, and the outer surface of the sealing sleeve is connected with an annular air bag in a glued mode through a reserved groove. Sealing rings are fixedly mounted on the outer surface of the sealing sleeve and located at the top and the bottom of the annular air bag through clamping grooves; by additionally arranging the auxiliary sealing and reinforcing mechanism and utilizing the modes of sleeving, elastic supporting and sealing and reinforcing, the stability of threaded connection and combination use of the connecting pipe is improved, and therefore the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum mining, in particular to an oil drain device for petroleum mining. Background Art

[0002] Oil production is a complex and critical industrial process. Its main purpose is to obtain oil resources from underground reservoirs. The oil drain is an important component in oil production equipment. It is mainly used to discharge the liquid in the annular space of the casing during oil well operations.

[0003] At present, when using an oil drain, there is a lack of an auxiliary sealing reinforcement mechanism. Usually, the connecting pipe in the middle section is connected and used in combination through threads. However, in actual use, due to the collision caused by shaking, it is easy to cause the connection to become loose, which not only causes oil leakage, but also easily affects the quality and effect of oil drainage. Therefore, an oil drain for petroleum mining is proposed to increase the auxiliary sealing reinforcement mechanism, and use the sleeve, elastic support, and sealing reinforcement methods to improve the stability of the threaded connection combination of the connecting pipe, thereby improving the use effect. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides an oil drain for petroleum mining, so as to improve the stability of the threaded connection combination of the connecting pipe by means of sleeve arrangement, elastic support and sealing reinforcement, thereby improving the use effect.

[0005] The technical solution adopted by the utility model to solve the technical problem is an oil drain device for petroleum mining, comprising a coupling, a connecting pipe and a main pipe, wherein the top of the coupling is provided with a connecting pipe, the top of the connecting pipe is provided with a main pipe, the ends of the coupling and the connecting pipe are fixedly provided with sealing components, and a control component is provided in the connecting pipe;

[0006] The sealing assembly includes a fixing seat, and the ends of the coupling and the connecting pipe are connected to the fixing seat by welding. A sealing sleeve corresponding to the connecting pipe is connected to the fixing seat by welding. The outer surface of the sealing sleeve is glued to an annular airbag through a reserved groove. The outer surface of the sealing sleeve is located at the top and bottom of the annular airbag and is fixed with sealing rings through slots.

[0007] By adopting the above technical solution, a sealing reinforcement mechanism can be added, and the stability and sealing of the connecting pipe connection can be improved by using socket connection, elastic support, and sealing reinforcement. It is less likely to be loosened or damaged by external forces, and is also beneficial to extending the service life of the oil drainer.

[0008] Specifically, the control component has a conical block, an oil drain channel is provided in the conical block, the top of the conical block is connected to a guide rod via bolts, and a pressure plate is provided on the outer periphery of the guide rod.

[0009] By adopting the above technical solution, an automatic oil leakage control opening and closing mechanism can be added. By sliding and plugging, the oil leakage path can be automatically closed when the internal and external air pressures reach equilibrium, thereby improving the stability and convenience of use and preventing internal oil backflow.

[0010] Specifically, the outer surface of the annular airbag is connected to a non-slip pad by gluing, a guide groove is opened on the inner side of the sealing sleeve, and the guide groove is connected to the air inlet end of the annular airbag, and an air hole is opened on the surface of the fixing seat, and the air hole is connected to the guide groove.

[0011] By adopting the above technical solution, the tightness of the annular airbag can be increased, the friction between the annular airbag and the threaded section can be increased, and the annular airbag can be easily inflated in advance by an external air pump device.

[0012] Specifically, a stop block corresponding to the oil drain channel is connected to the bottom of the pressure plate by welding, and a compression spring is sleeved and connected to the outer periphery of the guide rod at the top of the pressure plate.

[0013] By adopting the above technical solution, it is easy to block the flow of oil in the oil leakage channel, and the elastic force can be used to push the pressure plate to slide downward, so that the channel is automatically closed when the internal and external pressure difference reaches equilibrium.

[0014] Specifically, the connecting pipe includes a tapered opening, and the tapered block is connected to the tapered opening via bolts, and both ends of the connecting pipe are provided with threaded sections.

[0015] By adopting the above technical solution, the oil can be easily circulated in the connecting pipe, and the connecting pipe thread can be easily connected to the coupling and the main pipe.

[0016] Specifically, an oil drain port is provided on the surface of the main pipe, a sealing plug is provided in the oil drain port, and a joint is provided on the top of the main pipe.

[0017] By adopting the above technical solution, it is convenient to send out the oil to complete the oil drain, and it is convenient to combine and connect the main pipe and the oil pump for use.

[0018] Beneficial effects of the utility model:

[0019] (1) The oil drainer used in petroleum mining described in the utility model can add an auxiliary sealing reinforcement mechanism by providing a fixing seat, a sealing sleeve, an annular airbag and a sealing ring. By using the methods of sleeve connection, elastic support and sealing reinforcement, the stability and sealing performance of the combined use of the connecting pipes are improved. The oil drainer is less susceptible to loosening and damage caused by shaking and collision, and the connection is more stable and reliable, which is also conducive to extending the service life of the oil drainer.

[0020] (2) The oil drainer used in petroleum mining described in the utility model can increase the oil leakage control mechanism by providing a conical block, an oil leakage channel, a guide rod, a pressure plate and a stop block. While completing the oil leakage through the air pressure difference, it uses elastic force to push and control the opening and closing of the channel to avoid internal oil backflow, improve the use effect, and increase the practicality of the oil drainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic cross-sectional structural diagram of the sealing component of the present invention;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the sealing sleeve of the present invention;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the present invention;

[0026] Figure 5 This is a schematic cross-sectional view of the control assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of the main pipe of the present utility model;

[0028] In the figure: 1. Coupling; 2. Connecting pipe; 201. Conical mouth; 202. Threaded section; 3. Main pipe; 301. Oil drain port; 302. Sealing plug; 303. Connector; 4. Sealing assembly; 401. Fixing seat; 402. Sealing sleeve; 403. Annular airbag; 404. Sealing ring; 405. Anti-slip pad; 406. Guide groove; 407. Air hole; 5. Control assembly; 501. Conical block; 502. Oil drain channel; 503. Guide rod; 504. Pressure plate; 505. Stop block; 506. Compression spring. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In order to facilitate the use of sleeves, elastic support, and sealing reinforcement to improve the stability of the threaded connection combination of the connecting pipe, thereby improving the use effect, such as Figure 1-3As shown, the oil drain device for petroleum mining described in the utility model includes a coupling 1, a connecting pipe 2 and a main pipe 3. The top of the coupling 1 is provided with the connecting pipe 2, and the top of the connecting pipe 2 is provided with the main pipe 3. The ends of the coupling 1 and the connecting pipe 2 are fixedly provided with a sealing assembly 4, and the connecting pipe 2 is provided with a control assembly 5.

[0031] The sealing assembly 4 includes a fixing seat 401, and the ends of the coupling 1 and the connecting pipe 2 are connected to the fixing seat 401 by welding. A sealing sleeve 402 corresponding to the connecting pipe 2 is connected to the fixing seat 401 by welding. The outer surface of the sealing sleeve 402 is glued to an annular airbag 403 through a reserved groove. The outer surface of the sealing sleeve 402 is located at the top and bottom of the annular airbag 403 and is fixed with a sealing ring 404 through a slot.

[0032] During use, a sealing reinforcement mechanism can be added through the fixing seat 401, the sealing sleeve 402, the annular airbag 403 and the sealing ring 404. By using the socket connection, elastic support and sealing reinforcement, the stability and sealing performance of the connection of the connecting pipe 2 can be improved, making it less likely to loosen or be damaged by external forces, and also helping to extend the service life of the oil drainer.

[0033] In order to improve the convenience of oil discharge, for example, Figure 4 、 Figure 5 As shown, the present invention also includes the control component 5, a conical block 501, an oil drain channel 502 is opened in the conical block 501, the top of the conical block 501 is connected to a guide rod 503 by bolts, and a pressure plate 504 is provided on the outer periphery of the guide rod 503.

[0034] During use, an automatic oil leakage control opening and closing mechanism can be added through the conical block 501, the oil leakage channel 502, the guide rod 503 and the pressure plate 504. By sliding and plugging, the oil leakage path is automatically closed when the internal and external air pressures reach equilibrium, thereby improving the stability and convenience of use and preventing internal oil backflow.

[0035] For example, Figure 2 、 Figure 3 As shown, the utility model also includes that the outer surface of the annular airbag 403 is connected to the anti-slip pad 405 by gluing, the inner side of the sealing sleeve 402 is provided with a guide groove 406, and the guide groove 406 is connected to the air inlet end of the annular airbag 403, and the surface of the fixing seat 401 is provided with an air hole 407, and the air hole 407 is connected to the guide groove 406.

[0036] During use, the anti-slip pad 405 can increase the tightness of the annular airbag 403 and increase the friction with the threaded section 202. The guide groove 406 and the air hole 407 facilitate pre-inflation of the annular airbag 403 through an external air pump device.

[0037] For example, Figure 5 As shown, the present invention further includes that the bottom of the pressure plate 504 is connected by welding with a stop block 505 corresponding to the oil drain channel 502 , and the periphery of the guide rod 503 is located on the top of the pressure plate 504 and is sleeved with a compression spring 506 .

[0038] When in use, the stop block 505 is used to block the flow of oil in the oil drain channel 502. The compression spring 506 can use elastic force to push the pressure plate 504 to slide downward, so that when the internal and external pressure difference reaches equilibrium, the channel is automatically closed.

[0039] For example, Figure 2 、 Figure 4 As shown, the present invention further includes that the connecting pipe 2 includes a tapered opening 201 , and the tapered block 501 is connected to the tapered opening 201 by bolts, and threaded sections 202 are provided at both ends of the connecting pipe 2 .

[0040] When in use, the tapered opening 201 facilitates the oil to circulate in the connecting pipe 2 , and the threaded section 202 facilitates the connecting pipe 2 to be threadedly connected to the coupling 1 and the main pipe 3 .

[0041] For example, Figure 6 As shown, the present invention further includes that an oil drain port 301 is opened on the surface of the main pipe 3 , a sealing plug 302 is provided in the oil drain port 301 , and a joint 303 is provided on the top of the main pipe 3 .

[0042] When in use, the oil is easily delivered through the oil drain port 301 and the sealing plug 302 to complete the oil drain, and the main pipe 3 is easily connected to the oil pump for combined use through the joint 303.

[0043] When the utility model is in use, the operator first connects the main pipe 3 to the oil pump through the joint 303, and the coupling 1 is fixedly connected to the oil pipe string. When oil needs to be drained, the sealing sleeve 402 is removed. Under the action of the internal and external air pressure, the oil is pushed out of the main pipe 3 from the oil drain port 301 to complete the oil drain process. When the internal and external air pressure difference reaches equilibrium, the elastic force of the compression spring 506 pushes the pressure plate 504 to slide downward, so that the stop block 505 is inserted into the oil drain channel 502, and the channel is automatically opened and closed. The utility model has a simple structure, low cost, more stable and reasonable use, and can also prevent oil backflow.

[0044] Moreover, during actual use, air can be pre-inflated into the annular airbag 403 through the air hole 407 and the guide groove 406. Through the sealing sleeve 402, the annular airbag 403, the anti-slip pad 405 and the sealing ring 404, the stability and sealing of the connection at the end of the connecting pipe 2 can be improved by utilizing the methods of sleeve connection, inflation deformation, sealing reinforcement and elastic support. It is less susceptible to damage or loosening caused by external shaking and impact. It has a simple structure, low cost, is more stable and reliable to use, and is also beneficial to extending the service life of the oil drainer.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil drain device for oil mining, characterized in that: It comprises a coupling (1), a connecting pipe (2) and a main pipe (3), wherein the top of the coupling (1) is provided with a connecting pipe (2), the top of the connecting pipe (2) is provided with a main pipe (3), the ends of the coupling (1) and the connecting pipe (2) are both fixedly provided with sealing components (4), and a control component (5) is provided in the connecting pipe (2); The sealing assembly (4) comprises a fixing seat (401), and the ends of the coupling (1) and the connecting pipe (2) are both connected to the fixing seat (401) by welding. A sealing sleeve (402) corresponding to the connecting pipe (2) is connected in the fixing seat (401) by welding. The outer surface of the sealing sleeve (402) is glued to an annular airbag (403) through a reserved groove. The outer surface of the sealing sleeve (402) is located at the top and bottom of the annular airbag (403) and is fixedly mounted with a sealing ring (404) through a slot.

2. The oil drain device for petroleum mining according to claim 1, characterized in that: The control assembly (5) has a conical block (501), an oil drain channel (502) is provided in the conical block (501), a guide rod (503) is connected to the top of the conical block (501) via bolts, and a pressure plate (504) is provided on the periphery of the guide rod (503).

3. The oil drain device for petroleum mining according to claim 1, characterized in that: The outer surface of the annular airbag (403) is connected to an anti-slip pad (405) by gluing, the inner side of the sealing sleeve (402) is provided with a guide groove (406), and the guide groove (406) is connected to the air inlet end of the annular airbag (403), and the surface of the fixing seat (401) is provided with an air hole (407), and the air hole (407) is connected to the guide groove (406).

4. The oil drain device for petroleum mining according to claim 2, characterized in that: The bottom of the pressure plate (504) is connected to a stop block (505) corresponding to the oil drain channel (502) by welding, and the outer periphery of the guide rod (503) is located on the top of the pressure plate (504) and is sleeve-connected to a compression spring (506).

5. The oil drain device for petroleum mining according to claim 2, characterized in that: The connecting pipe (2) comprises a tapered opening (201), and the tapered block (501) is connected to the tapered opening (201) via bolts. Both ends of the connecting pipe (2) are provided with threaded sections (202).

6. The oil drain device for petroleum mining according to claim 1, characterized in that: An oil drain port (301) is provided on the surface of the main pipe (3), a sealing plug (302) is provided in the oil drain port (301), and a joint (303) is provided on the top of the main pipe (3).

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