Gas lift negative pressure pump with built-in oil pipe

Abstract

The utility model belongs to the technical field of gas lift negative pressure pumps, and discloses an oil pipe built-in type gas lift negative pressure pump which comprises a pipe sleeve, an arc-shaped block is arranged in the pipe sleeve in an attached mode, a negative pressure pump body is arranged at the top end of the arc-shaped block in an attached mode, a lower sealing assembly is fixedly connected to one side of the negative pressure pump body, and an insertion pipe is arranged on the outer side of the lower sealing assembly in a sleeved mode. The side, away from the lower sealing assembly, of the negative pressure pump body is fixedly connected with an oil pipe pipeline, the oil pipe pipeline is sleeved with an upper sealing assembly, a liquid containing box is embedded in the top end of the arc-shaped block, one side of the liquid containing box is fixedly connected with a transparent pipe, the outer side of the transparent pipe is fixedly connected with a static pressure liquid level sensor, and the interior of the transparent pipe is slidably connected with a blocking piece. By means of the technical scheme, the problems that in the prior art, when a gas lift negative pressure pump is used, the internal gas tightness cannot be effectively monitored, if the gas tightness is reduced, internal gas leakage is caused, the gas tightness cannot be found and maintained in time, and economic losses are caused are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air lift negative pressure pumps, in particular to an oil pipe built-in air lift negative pressure pump. Background Art

[0002] The gas lift negative pressure pump is a kind of equipment used in oil well mining and other fields. Its main purpose is to lift the downhole fluid. Its basic principle is to use gas injection to generate negative pressure, and then lift the downhole liquid. Therefore, it has high requirements for air tightness. During use, people cannot monitor the air tightness between the gas lift negative pressure pump and the pipeline in real time. If the air tightness between the gas lift negative pressure pump and the pipeline decreases, causing gas leakage, it will cause economic losses.

[0003] During use, an existing oil pipe built-in gas lift negative pressure pump is connected to the pipeline and sealed by upper and lower sealing assemblies. However, during long-term use, the seals may age and cause a decrease in air tightness. If not discovered and repaired in time, gas leakage may occur, reducing the lifting efficiency. If the leaked gas contains flammable components, when the gas concentration reaches a certain level, an explosion-hazardous environment will be formed, increasing economic losses.

[0004] Therefore, in order to solve the above problems, an oil pipe built-in gas lift negative pressure pump is proposed. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides an oil pipe built-in gas lift negative pressure pump, which has the advantage of being able to monitor the air tightness between the gas lift negative pressure pump and the pipeline in real time.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil pipe built-in air lift negative pressure pump, comprising a pipe sleeve, an arc block is fitted inside the pipe sleeve, a negative pressure pump body is fitted on the top of the arc block, a lower sealing assembly is fixedly connected to one side of the negative pressure pump body, a cannula is sleeved on the outside of the lower sealing assembly, an oil pipe is fixedly connected to the side of the negative pressure pump body away from the lower sealing assembly, an upper sealing assembly is sleeved on the outside of the oil pipe, a liquid box is inlaid on the top of the arc block, a transparent tube is fixedly connected to one side of the liquid box, a static pressure level sensor is fixedly connected to the outside of the transparent tube, and a baffle is slidably connected to the inside of the transparent tube.

[0007] Preferably, the bottom end of the liquid storage box is fixedly connected to a first elastic card block, the inner side of the first elastic card block is fixedly connected to a first spring, the outer side of the first elastic card block is fitted with a second elastic card block, and the bottom end of the second elastic card block is fixedly connected to a support plate.

[0008] Preferably, a positioning rod is fixedly connected to the inner wall of the pipe sleeve, and the positioning rod is embedded in the interior of the arc block.

[0009] Preferably, fixing ears are fixedly connected to both sides of the bottom end of the negative pressure pump body, bolts are spirally connected inside the fixing ears, and the lower part of the bolts is embedded in the interior of the arc block.

[0010] Preferably, a support ring is fixedly connected to the inner wall of the pipe sleeve, a sealing ring is embedded in the interior of the support ring, and one side of the support ring is in contact with one side of the negative pressure pump body.

[0011] Preferably, a support seat is sleeved on the outer side of the transparent tube, a rubber ring is fixedly connected to the inner wall of the support seat, and the inner wall of the rubber ring is in contact with the outer side of the transparent tube.

[0012] Preferably, the four corners of the top end of the support plate are fixedly connected with support blocks, and the top end of the support block is fixedly connected with a gasket.

[0013] Preferably, a plurality of groups of second springs are fixedly connected to the bottom end of the support plate, and the bottom ends of the second springs are fixedly connected to the inner wall of the arc block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model is provided with a static pressure liquid level sensor. During the operation of the negative pressure pump body, if the airtightness of the connection with the pipeline changes, causing gas leakage and resulting in a change in internal pressure, pressure will be applied to the liquid box to push out the liquid inside and push the baffle inside the transparent tube to move. Under the monitoring of the static pressure liquid level sensor, an alert will be given to the staff, facilitating timely maintenance, improving lifting efficiency, reducing the risk of explosion, and improving safety performance.

[0016] 2. The utility model realizes the rapid installation and fixation of the liquid storage box by arranging the first elastic card block and the second elastic card block to cooperate with each other. At the same time, the first spring can apply elastic force to the first elastic card block, so that it fits tightly with the second elastic card block, thereby improving the tightness of the connection and preventing it from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cutaway structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the transparent tube of the utility model;

[0020] Figure 4 This is a schematic diagram of the elastic card module structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the support ring of the utility model.

[0022] In the figure: 1. pipe sleeve; 2. arc block; 3. negative pressure pump body; 4. lower sealing assembly; 5. cannula; 6. oil pipe; 7. upper sealing assembly; 8. liquid box; 9. transparent tube; 10. static pressure level sensor; 11. baffle; 12. first elastic block; 13. first spring; 14. second elastic block; 15. support plate; 16. positioning rod; 17. fixing ear; 18. bolt; 19. support ring; 20. sealing ring; 21. support seat; 22. rubber ring; 23. support block; 24. gasket; 25. second spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 5 As shown, the utility model provides an oil pipe built-in gas lift negative pressure pump, including a pipe sleeve 1, the interior of the pipe sleeve 1 is fitted with an arc block 2, and fits with the inner wall of the pipe sleeve 1, the top of the arc block 2 is fitted with a negative pressure pump body 3, one side of the negative pressure pump body 3 is fixedly connected to a lower sealing assembly 4, the outer side of the lower sealing assembly 4 is sleeved with a cannula 5, the side of the negative pressure pump body 3 away from the lower sealing assembly 4 is fixedly connected to an oil pipe 6, the outer side of the oil pipe 6 is sleeved with an upper sealing assembly 7, the top of the arc block 2 is inlaid with a A liquid box 8 is embedded, and liquid solution is placed inside the liquid box 8. A transparent tube 9 is fixedly connected to one side of the liquid box 8, and a static pressure liquid level sensor 10 is fixedly connected to the outside of the transparent tube 9. A baffle 11 is slidably connected to the inside of the transparent tube 9. There is solution inside the baffle 11 and the transparent tube 9 close to the side of the liquid box 8. The baffle 11 isolates them to prevent liquid evaporation. At the same time, when the liquid level changes, it is convenient to observe through the movement of the baffle 11, thereby improving the working efficiency of the static pressure liquid level sensor 10.

[0025] Specifically, the bottom end of the liquid storage box 8 is fixedly connected to a first elastic block 12, and the inner side of the first elastic block 12 is fixedly connected to a first spring 13. There are multiple first springs 13, and they are evenly distributed on the inner side of the first elastic block 12, so as to facilitate the outward pressure on the first elastic block 12 so that it can fit tightly with the inner wall of the second elastic block 14, thereby improving the stability of the connection. A second elastic block 14 is fitted on the outer side of the first elastic block 12, and the bottom end of the second elastic block 14 is fixedly connected to a support plate 15 to play a supporting role.

[0026] Furthermore, a positioning rod 16 is fixedly connected to the inner wall of the sleeve 1, and the positioning rod 16 is embedded in the interior of the arc block 2, which can position the arc block 2, prevent the arc block 2 from rotating inside the sleeve 1, and improve the stability of the internal device.

[0027] Furthermore, fixing ears 17 are fixedly connected on both sides of the bottom end of the negative pressure pump body 3, and the internal spiral connection of the fixing ears 17 is connected with bolts 18, and the lower part of the bolts 18 is embedded in the interior of the arc block 2, which facilitates the installation and fixation of the negative pressure pump body 3 without the need to connect to the outer pipe sleeve 1.

[0028] It is worth noting that a support ring 19 is fixedly connected to the inner wall of the sleeve 1, a sealing ring 20 is embedded inside the support ring 19, and one side of the support ring 19 is in contact with one side of the negative pressure pump body 3. Under the action of the support ring 19, the negative pressure pump body 3 is supported, and the tension on the bolt 18 is reduced. Under the action of the sealing ring 20, the tightness of the connection between the cannula 5 and the support ring 19 is improved, and the air tightness of the internal cavity is improved.

[0029] It is worth noting that a support seat 21 is provided on the outer side of the transparent tube 9, and a rubber ring 22 is fixedly connected to the inner wall of the support seat 21, and the inner wall of the rubber ring 22 fits with the outer side of the transparent tube 9. The support seat 21 can support the transparent tube 9, reduce the impact of external force on it, reduce the shaking amplitude, and maintain the stability of the internal liquid level. The rubber ring 22 can reduce the friction damage of the support seat 21 to the transparent tube 9, thereby reducing economic losses.

[0030] It is worth mentioning that the four corners of the top of the support plate 15 are fixedly connected with support blocks 23, and the top of the support block 23 is fixedly connected with a gasket 24. The support block 23 supports the support plate 15 to prevent the support plate 15 from tilting, causing the upper liquid box 8 to tilt and improve the stability of the liquid box 8.

[0031] It is worth emphasizing that the bottom end of the support plate 15 is fixedly connected to multiple groups of second springs 25, and the bottom end of the second spring 25 is fixedly connected to the inner wall of the arc block 2, which supports the support plate 15. When the negative pressure pump body 3 vibrates, it can buffer the force, reduce the impact on the upper liquid box 8, prevent the internal liquid from shaking violently, and improve the monitoring accuracy of the static pressure liquid level sensor 10.

[0032] Among them, the negative pressure pump body 3, the lower sealing assembly 4, the upper sealing assembly 7 and the static pressure liquid level sensor 10 are existing technologies and will not be described in detail; at the same time, the present invention also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0033] Working principle and process:

[0034] When the staff needs to install the negative pressure pump body 3, first tighten the negative pressure pump body 3 to the arc block 2 through the bolts 18, and then embed the liquid box 8 into the interior of the arc block 2, so that the first elastic block 12 is stuck into the interior of the second elastic block 14, thereby achieving rapid installation and fixation of the liquid box 8, and under the action of the support block 23, the liquid box 8 is kept in a horizontal state to prevent tilting. The support seat 21 can also fix the transparent tube 9, and then slide the arc block 2 and the upper parts into the interior of the pipe sleeve 1. Under the action of the positioning rod 16, the position of the arc block 2 is quickly positioned to prevent it from rotating inside the pipe sleeve 1, and under the support of the support ring 19, the negative pressure pump body 3 is supported, reducing the force on the bolts 18. Under the action of the sealing ring 20, the tightness of the connection between the cannula 5 and the support ring 19 is improved, and the airtightness of the internal cavity is improved. Then install parts such as pipes and seals. During the operation of the negative pressure pump body 3, the negative pressure pump body 3 vibrates. Under the action of the second spring 25, the force is buffered to reduce the impact on the upper liquid box 8. The static pressure liquid level sensor 10 inside the pipe sleeve 1 can monitor the air pressure inside the pipe sleeve 1 in real time by the liquid level change inside the transparent tube 9. If the airtightness of the connection between the negative pressure pump body 3 and the pipeline changes, causing gas leakage, resulting in a change in the internal pressure, due to the difference in internal and external pressures, a pressure difference is generated, which will exert pressure on the liquid box 8, pushing out the internal liquid and pushing the baffle 11 inside the transparent tube 9 to move, so as to facilitate observation of the liquid level. Under the monitoring of the static pressure liquid level sensor 10, a warning is given to the staff, which is convenient for timely maintenance, improves lifting efficiency, prevents the leakage of combustible gas from being too high, reduces the risk of explosion, and improves safety performance.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil pipe built-in gas lift negative pressure pump, comprising a pipe sleeve (1), characterized in that: The temporal portion of the pipe sleeve (1) is fitted with an arc block (2), the top of the arc block (2) is fitted with a negative pressure pump body (3), one side of the negative pressure pump body (3) is fixedly connected to a lower sealing assembly (4), the outer side of the lower sealing assembly (4) is sleeved with a cannula (5), the side of the negative pressure pump body (3) away from the lower sealing assembly (4) is fixedly connected to an oil pipe (6), the outer side of the oil pipe (6) is sleeved with an upper sealing assembly (7), the top of the arc block (2) is inlaid with a liquid box (8), one side of the liquid box (8) is fixedly connected to a transparent tube (9), the outer side of the transparent tube (9) is fixedly connected to a static pressure liquid level sensor (10), and the inside of the transparent tube (9) is slidably connected to a baffle (11).

2. The tubing-mounted air lift negative pressure pump according to claim 1, characterized in that: The bottom end of the liquid storage box (8) is fixedly connected to a first elastic card block (12), the inner side of the first elastic card block (12) is fixedly connected to a first spring (13), the outer side of the first elastic card block (12) is fitted with a second elastic card block (14), and the bottom end of the second elastic card block (14) is fixedly connected to a support plate (15).

3. The tubing-embedded air lift negative pressure pump according to claim 1, characterized in that: A positioning rod (16) is fixedly connected to the inner wall of the pipe sleeve (1), and the positioning rod (16) is embedded in the interior of the arc block (2).

4. The tubing-embedded air lift negative pressure pump according to claim 1, characterized in that: The bottom ends of the negative pressure pump body (3) are fixedly connected with fixing ears (17) on both sides, the interior of the fixing ears (17) is spirally connected with bolts (18), and the lower part of the bolts (18) is embedded in the interior of the arc block (2).

5. The tubing-embedded air lift negative pressure pump according to claim 1, characterized in that: A support ring (19) is fixedly connected to the inner wall of the pipe sleeve (1), a sealing ring (20) is embedded in the interior of the support ring (19), and one side of the support ring (19) is in contact with one side of the negative pressure pump body (3).

6. The tubing-embedded air lift negative pressure pump according to claim 1, characterized in that: The outer side of the transparent tube (9) is sleeved with a support seat (21), the inner wall of the support seat (21) is fixedly connected with a rubber ring (22), and the inner wall of the rubber ring (22) is in contact with the outer side of the transparent tube (9).

7. The tubing-embedded air lift negative pressure pump according to claim 2, characterized in that: The four corners of the top end of the support plate (15) are fixedly connected to support blocks (23), and the top end of the support block (23) is fixedly connected to a gasket (24).

8. The tubing-embedded air lift negative pressure pump according to claim 2, characterized in that: The bottom end of the support plate (15) is fixedly connected to a plurality of groups of second springs (25), and the bottom ends of the second springs (25) are fixedly connected to the inner wall of the arc block (2).

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