Double-filtration oil extraction equipment

Abstract

The utility model provides double-filtration oil extraction equipment which comprises a first oil extraction pipe, a second oil extraction pipe, a communicating pipe cover arranged on the outer circumferential wall of the second oil extraction pipe and communicated with an inner cavity of the second oil extraction pipe, and an oil extraction nozzle connected to the inlet end of the first oil extraction pipe. A second connecting disc connected with the first connecting disc through bolts and nuts is fixed to the end, facing the first oil extraction pipe, of the second oil extraction pipe, a mounting groove is formed in the end, facing the oil extraction nozzle, of the first connecting disc, and the filter barrel comprises a barrel body located in an inner hole of the first oil extraction pipe and a cover body located in the mounting groove; the diameter of the outer circle of the cover body is larger than that of the outer circle of the barrel body, first filtering holes are formed in the bottom wall of the barrel body, and second through filtering holes are formed in the outer circumferential wall of the barrel body. The oil extraction quality can be improved, and the self-adjusting function can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil extraction equipment technical field, concretely relates to a double filtration oil extraction equipment. BACKGROUND

[0002] Oil extraction equipment is an instrument for collecting oil, and needs to ensure that the pipeline has pressure reduction and wear resistance during oil extraction.

[0003] The existing patent with the application number CN202223397186.8 and the patent name "pressure reduction and wear resistant oil extraction equipment" discloses "a pressure reduction and wear resistant oil extraction equipment, which comprises a first oil extraction pipe (1), one end of the first oil extraction pipe (1) is provided with a second oil extraction pipe (5), the other end of the first oil extraction pipe (1) is provided with an oil extraction nozzle (2), one end of the oil extraction nozzle (2) is provided with an extension pipe (15), and the extension pipe (15) and the oil extraction nozzle (2) are integrally formed; characterized in that it further comprises: a communication pipe cover (6) arranged at one end of the second oil extraction pipe (5), one end of the communication pipe cover (6) is provided with a third oil extraction pipe (9), and the communication pipe cover (6), the second oil extraction pipe (5) and the third oil extraction pipe (9) are integrally formed; a shunt pipeline (7) arranged on the outer wall of the first oil extraction pipe (1), the shunt pipeline (7) is provided with four, the four shunt pipelines (7) are in communication with the inside of the first oil extraction pipe (1), and one end of the four shunt pipelines (7) is provided with a connecting pipe disc (11), the connecting pipe disc (11) and the shunt pipeline (7) are integrally formed; a pipe cover interface (10) arranged on the front end face of the communication pipe cover (6), the pipe cover interface (10) is provided with four, the four pipe cover interfaces (10) are integrally formed with the communication pipe cover (6), one end of the connecting pipe disc (11) is provided with a valve (8); a flange joint disc (3) arranged at the position where the first oil extraction pipe (1) and the second oil extraction pipe (5) are connected, the flange joint disc (3) is provided with two, the two flange joint discs (3) are integrally formed with the first oil extraction pipe (1) and the second oil extraction pipe (5), and the inside of one flange joint disc (3) is provided with a stainless steel carrier disc (13), the inside of the stainless steel carrier disc (13) is provided with an oil residue filter screen (14), and the oil residue filter screen (14) and the stainless steel carrier disc (13) are integrally formed." The oil residue filter screen (14) can only filter oil once, if the filter hole is too small, it may be blocked, and if the filter hole is too large, the quality of the oil cannot be ensured. SUMMARY

[0004] Based on the above problems, the utility model aims at providing a double filtration oil extraction equipment which can improve the quality of oil extraction and has a self-adjusting function.

[0005] In view of the above problems, the technical scheme is provided as follows: a double-filtering oil extraction equipment, comprising a first oil extraction pipe, a second oil extraction pipe, a communication pipe cover arranged on the outer circumferential wall of the second oil extraction pipe and connected with the inner cavity of the second oil extraction pipe, an oil extraction nozzle connected with the inlet end of the first oil extraction pipe, and a flow dividing pipe connected with the first oil extraction pipe and the communication pipe cover at two ends, wherein a valve is arranged on the flow dividing pipe, a first connecting disc is fixed to the end of the first oil extraction pipe opposite to the oil extraction nozzle, a second connecting disc is fixed to the end of the second oil extraction pipe facing the first oil extraction pipe and connected with the first connecting disc through a bolt and a nut, and a filter barrel is further arranged, wherein an installation groove is arranged on the end of the first connecting disc facing the oil extraction nozzle, the installation groove and the inner hole of the first oil extraction pipe form a stepped hole for installing the filter barrel, the filter barrel comprises a barrel body located in the inner hole of the first oil extraction pipe and a cover body located in the installation groove, the outer diameter of the outer circumferential wall of the cover body is larger than the outer diameter of the barrel body, a first filter hole is arranged on the bottom wall of the barrel body, a plurality of first filter holes are uniformly arranged, a second filter hole is arranged on the outer circumferential wall of the barrel body and penetrates through, the inner cavity of the barrel body is connected with the inner cavity of the installation groove through the second filter hole, a plurality of second filter holes are arranged on the barrel wall of the entire barrel body and are uniformly arranged, the diameter of the first filter hole is larger than the diameter of the second filter hole, and the outer circumferential wall of the barrel bottom is tightly matched with the inner wall of the first oil extraction pipe.

[0006] In the above structure, in use, the oil extraction nozzle is connected with the first oil extraction pipe, the oil extraction nozzle is inserted into the oil well for oil extraction, the extracted oil enters the inner hole of the first oil extraction pipe and is filtered by the first filter holes on the barrel bottom of the filter barrel into the filter barrel, then the oil is filtered through the second filter holes into the installation groove, and the oil filtered twice is transported into the inner hole of the second oil extraction pipe through the installation groove. The first filter holes and the second filter holes with different diameters can facilitate the secondary filtration of the oil, so that the filter barrel can be prevented from being blocked to a certain extent, the oil extraction quality can be improved, and the reliability of the oil extraction equipment is improved. The cover body is arranged to be matched with the stepped hole, the filter barrel is limited in the direction facing the oil extraction nozzle, and the filter barrel is limited in the stroke in the other direction through the second connecting disc, so that the filter barrel is prevented from being stuck in the inner hole of the first oil extraction pipe and causing difficulty in oil extraction, and the reliability of the oil extraction equipment is further improved. When the oil inlet pressure is too large, the filter barrel is displaced towards the second oil extraction pipe, so that the second filter holes on the barrel wall can be more connected with the installation groove, thereby increasing the filtering area and reducing the internal pressure, and the reliability of the oil extraction equipment is improved.

[0007] The outer circumferential wall of the cover body is arranged to be spaced from the inner wall of the installation groove to form an oil passing channel.

[0008] The above structure can facilitate the oil to enter the second oil extraction pipe through the oil passing channel, thereby improving the reliability of the oil extraction equipment.

[0009] The utility model further sets up, a plurality of second filter holes are set up on the cover body.

[0010] Adopt above -mentioned structure, can increase the filter area of second filter hole, thereby improved the efficiency of the utility model filter, further improve the oil production rate of the utility model.

[0011] The utility model further sets up, the cover body is equipped with the locating rod, the second connecting disc is equipped with the locating hole that the locating rod is suitable for sliding relative second oil production pipe inner hole outside.

[0012] In the above structure, through the cooperation of the locating rod and the locating hole, the stability of the displacement of the filter barrel can be improved, and the filter barrel can be conveniently positioned and installed, thereby improving the reliability and assembly convenience of the utility model.

[0013] The utility model further sets up, the locating rod is sleeved with the limit spring, and the both ends of the limit spring are respectively abutted on the cover body and the end part of the second connecting disc.

[0014] In the above structure, by setting the limit spring, the position of the filter barrel can be adjusted according to the oil inlet pressure of the first oil production pipe, and then the balance of the internal pressure between the first oil production pipe and the second oil production pipe can be adjusted by adjusting the filtering area of the filter barrel, thereby improving the reliability of the utility model.

[0015] The utility model further sets up, one end of the locating rod and the cover body is equipped with the limit boss with the outer circle diameter greater than the outer circle diameter of the locating rod.

[0016] In the above structure, by setting the limit boss, sufficient spacing can be ensured between the cover body and the second connecting disc when the filter barrel reaches the maximum stroke, so that the second oil production pipe can be ensured not to be blocked, thereby improving the reliability of the utility model.

[0017] The utility model further sets up, the locating rod is uniformly distributed with at least four in the circumferential direction of the filter barrel.

[0018] By adopting the above structure, the stability of the displacement of the filter barrel can be further improved, thereby further improving the reliability of the utility model.

[0019] The utility model further sets up, the outer circle diameter of the barrel body is arranged in a tapering manner from the barrel bottom towards the cover body.

[0020] By adopting the above structure, the friction between the filter barrel and the inner hole of the first oil production pipe can be reduced, thereby the wear of the inner wall of the first oil production pipe caused by the filter barrel can be correspondingly reduced, and the service life of the utility model is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1The utility model discloses a structure schematic drawing.

[0022] Figure 2 The utility model discloses a sectional structure schematic drawing.

[0023] Figure 3 The utility model discloses a part structure split structure schematic drawing.

[0024] Figure 4 The utility model discloses a first oil extraction pipe structure schematic drawing.

[0025] Figure 5 The utility model discloses a filter barrel structure schematic drawing.

[0026] The meaning of figure mark: 1 - first oil extraction pipe;2 - second oil extraction pipe;3 - communication pipe cover;4 - oil extraction nozzle;5 - shunt pipe;6 - valve;11 - first connecting disc;21 - second connecting disc;7 - filter barrel;12 - installation groove;71 - barrel body;72 - cover;711 - first filter hole;712 - second filter hole;721 - positioning rod;211 - positioning hole;8 - limit spring;722 - limit boss. DETAILED DESCRIPTION

[0027] The utility model will be further described in detail in combination with the drawings and examples. The following examples are used to explain the utility model, but not to limit the scope of the utility model.

[0028] It needs to be explained that all directionality instructions (such as up, down, left, right, front, back, back face...) in the utility model embodiment are only used to explain the relative position relationship, movement condition etc. between the components in a certain specific attitude (such as the shown in the drawings), if the specific attitude changes, then the directionality instruction also changes accordingly.

[0029] As Figures 1 to 5The utility model provides a kind of double filtration oil extraction equipment, including first oil extraction pipe 1, second oil extraction pipe 2, the communication pipe cover 3 being arranged on the outer circumferential wall of second oil extraction pipe 2 and being connected with its inner cavity, the oil extraction nozzle 4 being connected to the import end of first oil extraction pipe 1 and the shunt pipe 5 being connected to first oil extraction pipe 1 and communication pipe cover 3 respectively, valve 6 is installed on the shunt pipe 5, the first connecting disc 11 is fixed to the end of first oil extraction pipe 1 opposite to oil extraction nozzle 4, the end of second oil extraction pipe 2 towards first oil extraction pipe 1 is fixed with the second connecting disc 21 connected with first connecting disc 11 by bolt nut, further including filter barrel 7, the end of first connecting disc 11 towards oil extraction nozzle 4 is provided with mounting groove 12, the mounting groove 12 and the inner hole of first oil extraction pipe 1 form stepped hole for installing filter barrel 7, the filter barrel 7 includes barrel body 71 in the inner hole of first oil extraction pipe 1 and cover body 72 in mounting groove 12, the outer circle diameter of cover body 72 is greater than the outer circle diameter of barrel body 71, the bottom wall of barrel body 71 is provided with first filter hole 711, first filter hole 711 is uniformly distributed, the outer circumferential wall of barrel body 71 is provided with the second filter hole 712 that passes through, the inner cavity of barrel body 71 is connected with the inner cavity of mounting groove 12 through second filter hole 712, second filter hole 712 is provided with several and is uniformly distributed on the barrel wall of entire barrel body 71, the aperture of first filter hole 711 is greater than the aperture of second filter hole 712, the barrel bottom of barrel body 71, the outer circumferential wall is closely matched with the inner wall of first oil extraction pipe 1.

[0030] In the above structure, when using, oil extraction nozzle 4 is connected to first oil extraction pipe 1, oil extraction is carried out by inserting oil extraction nozzle 4 into oil well, the oil extracted enters the inner hole of first oil extraction pipe 1 and is filtered to filter barrel 7 by first filter hole 711 in the bottom of filter barrel 7, then is filtered to mounting groove 12 by second filter hole 712, the oil filtered twice enters the inner hole of second oil extraction pipe 2 through mounting groove 12 and is transported. By setting first filter hole 711 and second filter hole 712 with different apertures, the utility model can filter oil twice, so that the filter barrel 7 can be prevented from being blocked to a certain extent, and the oil extraction quality can be improved, thereby improving the reliability of the utility model. By setting cover body 72, it can be matched with stepped hole, and the direction of filter barrel 7 towards oil extraction nozzle 4 is limited, and the other direction is limited in stroke by second connecting disc 21, so that the filter barrel 7 can be prevented from being stuck in the inner hole of first oil extraction pipe 1 and causing oil extraction difficulty, thereby further improving the reliability of the utility model. When the oil inlet pressure is too large, filter barrel 7 moves towards second oil extraction pipe 2, so that second filter hole 712 on the barrel wall can be more connected with mounting groove 12, thereby increasing the filtering area and reducing the internal pressure, thereby improving the reliability of the utility model.

[0031] The outer circumferential wall of the cover 72 is spaced apart from the inner wall of the mounting groove 12 to form an oil passing channel.

[0032] With the above structure, the oil can pass through the oil passing channel into the second oil extraction pipe 2, thereby improving the reliability of the utility model.

[0033] In the embodiment, a plurality of second filter holes 712 are formed in the cover 72.

[0034] With the above structure, the filtering area of the second filter holes 712 can be increased, thereby improving the filtering efficiency of the utility model and the oil extraction speed of the utility model.

[0035] In the embodiment, a positioning rod 721 is arranged on the cover 72, and a positioning hole 211 is formed in the second connecting disc 21 and is adapted to slide with the positioning rod 721.

[0036] In the above structure, the positioning rod 721 and the positioning hole 211 can improve the stability of the displacement of the filter barrel 7 and facilitate the positioning and installation of the filter barrel 7, thereby improving the reliability and assembly convenience of the utility model.

[0037] In the embodiment, a limiting spring 8 is sleeved on the positioning rod 721, and the two ends of the limiting spring 8 abut against the cover 72 and the end of the second connecting disc 21, respectively.

[0038] In the above structure, the limiting spring 8 can adjust the position of the filter barrel 7 according to the oil inlet pressure of the first oil extraction pipe 1, thereby adjusting the balance of the internal pressure between the first oil extraction pipe 1 and the second oil extraction pipe 2 by adjusting the filtering area of the filter barrel 7, and improving the reliability of the utility model.

[0039] In the embodiment, one end of the positioning rod 721 connected with the cover 72 is provided with a limiting boss 722 with an outer diameter larger than that of the positioning rod 721.

[0040] In the above structure, the limiting boss 722 can ensure that there is enough space between the cover 72 and the second connecting disc 21 when the filter barrel 7 reaches the maximum stroke, thereby ensuring that the second oil extraction pipe 2 is not blocked, and improving the reliability of the utility model.

[0041] In the embodiment, the positioning rod 721 is uniformly distributed with at least four positioning rods in the circumferential direction of the filter barrel 7.

[0042] With the above structure, the stability of the displacement of the filter barrel 7 can be further improved, thereby further improving the reliability of the utility model.

[0043] In the embodiment, the outer circle diameter of the barrel body 71 is arranged in a tapering manner from the barrel bottom to the cover body 72.

[0044] With the above structure, the friction between the filter barrel 7 and the inner hole of the first oil pipe 1 can be reduced, thereby reducing the abrasion of the first oil pipe 1 by the filter barrel 7, and prolonging the service life of the utility model.

[0045] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the art, without departing from the technical principles of the utility model, a number of improvements and modifications can be made, and the above-mentioned improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A double-filtered oil production equipment, comprising a first oil production pipe, a second oil production pipe, a communication pipe cover arranged on the outer circumferential wall of the second oil production pipe and communicating with the inner cavity thereof, an oil production nozzle connected to the inlet end of the first oil production pipe, and a shunt pipe having two ends respectively communicating with the first oil production pipe and the communication pipe cover, a valve being arranged on the shunt pipe, a first connecting disc being fixed to the end of the first oil production pipe opposite to the oil production nozzle, and a second connecting disc being fixed to the end of the second oil production pipe facing the first oil production pipe and connected to the first connecting disc through bolts and nuts. The filter barrel comprises a barrel body located in the inner hole of the first oil extraction pipe and a cover body located in the mounting groove, an outer diameter of the cover body is larger than that of the barrel body, a first filter hole is formed in the bottom wall of the barrel body, a plurality of first filter holes are uniformly distributed, a through second filter hole is formed in the outer circumferential wall of the barrel body, a plurality of second filter holes are uniformly distributed on the barrel wall of the entire barrel body, a diameter of the first filter hole is larger than that of the second filter hole, and the outer circumferential wall of the barrel bottom is tightly matched with the inner wall of the first oil extraction pipe.

2. A dual filtration oil production apparatus according to claim 1, wherein: The outer circumferential wall of the cover body is spaced apart from the inner wall of the mounting groove to form an oil passing channel.

3. A dual filtration oil production apparatus according to claim 2, wherein: The cover body is provided with a plurality of second filter holes.

4. The dual filtration oil production apparatus of claim 1, wherein: The cover body is provided with a positioning rod, and the second connecting disc is provided with a positioning hole matched with the positioning rod and sliding relative to the outer side of the inner hole of the second oil extraction pipe.

5. A dual filtration oil production apparatus as claimed in claim 4, wherein: A limiting spring is sleeved on the positioning rod, and two ends of the limiting spring are respectively abutted against the cover body and the end of the second connecting disc.

6. A dual filtration production equipment as claimed in claim 5, wherein: An outer diameter of one end of the positioning rod connected with the cover body is larger than that of the positioning rod.

7. A dual filtration production equipment as claimed in claim 6, wherein: The positioning rod is uniformly distributed with at least four positioning rods relative to the circumferential direction of the filter barrel.

8. A dual filtration oil production apparatus according to claim 1, wherein: The outer diameter of the barrel body is reduced from the barrel bottom to the cover body.

Images