Hydraulic static wear-free oil pumping equipment

Abstract

The invention discloses hydraulic static wear-free oil pumping equipment and relates to the technical field of oil pumping equipment, the purpose of oil pumping is achieved in a negative pressure environment, and the hydraulic static wear-free oil pumping equipment is distinguished in that the sealing performance of the internal structure of the hydraulic static wear-free oil pumping equipment is optimized and improved, a contact type sealing mode is adopted in the whole device, and when a movable sleeve and a directional sleeve slide relatively, the movable sleeve and the directional sleeve can slide relatively. In addition, the oil change bin between the upper pipe fitting and the backflow sleeve is only used as a key structure in the whole equipment, the sealing effect is generated by contacting the directional sealing ring with the upper pipe fitting, and it needs to be explained that the liquid level balance principle is utilized in the oil flowing process, so that the oil change bin cannot slide, and the oil change bin cannot slide. In the oil pumping process, the air pressure change serves as the basis, but the static transfer process of an oil medium is achieved through hydraulic power, on one hand, the pressure environment in equipment cannot be directly damaged, and on the other hand, the oil pumping efficiency and the oil pumping state are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of oil pumping equipment, in particular to hydraulic static wear-free oil pumping equipment. Background Art

[0002] The essence of oil pumping equipment is to convert mechanical energy into fluid energy. Taking the "kowtow machine" as an example, the key is to drive the plunger structure to reciprocate in the vertical direction to achieve the purpose of oil pumping. The overall process is achieved by coordinating the changes in hydraulic pressure when the plunger structure moves up and down.

[0003] In order to cooperate with the hydraulic change process, it is necessary to ensure that the inside of the oil pumping equipment has good sealing performance, mainly with common rubber seals (static seals) or mechanical seals (dynamic seals). However, it should be noted that: in multiple reciprocating motions, whether it is rubber seals or mechanical seals, there will be friction losses. As the working time goes by, it will directly affect the sealing environment inside the equipment, thereby directly affecting the oil pumping efficiency. In severe cases, the oil pumping action cannot be performed.

[0004] This application proposes a solution to this problem. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic static wear-free oil pumping equipment. Regarding the action process in the oil pumping equipment, the friction loss generated by multiple reciprocating actions continues to increase with the increase of working time, which directly affects the sealing environment inside the equipment and directly affects the oil pumping efficiency.

[0006] The objectives of the present invention can be achieved through the following technical solutions: a hydraulic static wear-free oil pumping equipment comprises a shell, wherein a movable sleeve and a directional sleeve arranged from top to bottom are arranged inside the shell, the movable sleeve and the shell are slidably connected in the vertical direction, and the directional sleeve is composed of an upper pipe fitting and a lower cone fitting arranged from top to bottom; an oil storage bin is arranged between the inner wall of the shell and the outer wall of the movable sleeve, a force storage oil bin is arranged between the movable sleeve and the upper pipe fitting, a fixed rubber plug is installed at the upper end position inside the movable sleeve, an air nozzle assembly is arranged on the fixed rubber plug, an inflatable balloon member and a gap baffle are arranged at the lower side of the lower cone fitting, an oil outlet is installed on the outer wall of the shell corresponding to the lower side of the oil storage bin, and the lower side of the shell is in an open shape.

[0007] It is further configured as follows: the air nozzle assembly is used to connect to the air pump assembly, and the air nozzle assembly consists of two air pipes, one of which extends downward into the inflatable balloon component and is connected to the inside of the inflatable balloon component, and the other air pipe extends to the lower side of the fixed rubber plug.

[0008] It is further configured as follows: the cross section of the gap baffle is in a downwardly curved arch shape, and the gap baffle is connected to the inside of the lower cone, a gap is provided between the gap baffle and the inner wall of the lower cone, and the upper curved surface of the gap baffle is connected to the inflatable balloon.

[0009] It is further configured as follows: the cross-section of the lower cone is truncated cone-shaped, and a resistance ring is provided between the lower outer wall of the lower cone and the inner wall of the shell, the cross-section of the resistance ring is U-shaped, and the curved surface on one side of the resistance ring is connected to the outer wall of the lower cone, and the curved surface on the other side of the resistance ring is maintained in a tangent state with the inner wall of the shell.

[0010] It is further configured as follows: a reverse flow sleeve is installed on the outer wall position of the movable sleeve corresponding to the inner part of the shell, the lower end of the reverse flow sleeve is open, and a gap is provided between the lower end of the reverse flow sleeve and the upper surface of the lower cone.

[0011] It is further configured as follows: the upper pipe is located inside the reverse flow sleeve, a directional sealing ring corresponding to the upper end of the upper pipe is installed at the top of the reverse flow sleeve, and an oil change tank is arranged inside the reverse flow sleeve through the upper pipe.

[0012] It is further configured that: the movable sleeve is located in the inner position of the upper pipe, and the lower end position of the movable sleeve is higher than the lower end position of the reverse flow sleeve.

[0013] It is further configured as follows: an electric straight-moving component corresponding to the movable sleeve is installed at the upper end of the shell.

[0014] The present invention has the following beneficial effects: 1. The overall device takes the change of air pressure as the key content, and actively sucks air into the movable sleeve through the air nozzle assembly, so that a negative pressure environment is actively formed inside the movable sleeve, thereby utilizing the negative pressure condition to achieve the oil pumping effect. The obvious difference from the conventional oil pumping process is that: there will be no obvious sliding process in the overall structure, so there is no obvious friction loss due to sliding. Specifically, a contact sealing form is adopted, and the oil change bin formed between the above pipe fittings and the reverse flow sleeve is the key part; 2. Based on the above content, on the basis of the negative pressure environment, the pressure volume change of the inflatable balloon part is synchronously utilized to drive the oil level in the power storage oil tank to float, thereby forming a liquid level balance principle in conjunction with the volume height in the oil change bin, the reverse flow sleeve, and the movable sleeve. Its essence is: utilizing the liquid level balance principle to form a flow process of the oil medium between the power storage oil tank-oil change tank-oil storage tank, ensuring that the oil medium is discharged in a relatively balanced static manner, and in the process of discharging the oil medium, the pressure environment in the equipment will not be directly destroyed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the hydraulic static wear-free oil pumping equipment proposed by the present invention; Figure 2 A cross-sectional view of a housing in the hydraulic static wear-free oil pumping equipment proposed by the present invention; Figure 3 The hydraulic static wear-free oil pumping equipment proposed by the present invention Figure 1 A cross-sectional view of Figure 4 The hydraulic static wear-free oil pumping equipment proposed by the present invention Figure 2 Split diagram of ; Figure 5 A cross-sectional view of a directional sleeve and a movable sleeve in the hydraulic static wear-free oil pumping equipment proposed by the present invention; Figure 6 The hydraulic static wear-free oil pumping equipment proposed by the present invention Figure 5 A partial cutaway view of .

[0017] In the figure: 1. Shell; 101. Oil storage tank; 102. Oil change tank; 103. Power storage oil tank; 2. Oil outlet; 3. Electric straight driving assembly; 4. Movable sleeve; 401. Backflow sleeve; 5. Air nozzle assembly; 6. Directional sleeve; 601. Upper pipe fitting; 602. Lower cone fitting; 7. Resistance ring sleeve; 8. Fixed rubber plug; 9. Gap baffle; 10. Directional sealing ring; 11. Inflatable balloon fitting. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: With regard to the action process of the oil pumping equipment, the friction loss generated by the multiple reciprocating actions continues to increase with the increase of working time, which directly affects the sealing environment inside the equipment and directly affects the oil pumping efficiency. The following technical solutions are proposed: Figures 1 to 6The hydraulic static wear-free oil pumping equipment in this embodiment includes a shell 1, wherein a movable sleeve 4 and a directional sleeve 6 are arranged from top to bottom inside the shell 1, wherein the movable sleeve 4 and the shell 1 are slidably connected in the vertical direction, and the directional sleeve 6 is composed of an upper pipe 601 and a lower cone 602 arranged from top to bottom; an oil storage tank 101 is arranged between the inner wall of the shell 1 and the outer wall of the movable sleeve 4, and a power storage oil tank 103 is arranged between the movable sleeve 4 and the upper pipe 601, and a fixed rubber plug is installed at the upper end of the movable sleeve 4 8. An air nozzle assembly 5 is arranged on the fixed rubber plug 8, an inflatable balloon component 11 and a gap baffle 5 are arranged on the lower side of the lower cone component 602, an oil outlet 2 is installed on the outer wall of the shell 1 corresponding to the lower side of the oil storage tank 101, and the lower side of the shell 1 is open, the air nozzle assembly 5 is used to connect the air pump assembly, and the air nozzle assembly 5 is composed of two air pipes, one of which extends downward into the inflatable balloon component 11 and is connected with the inside of the inflatable balloon component 11, and the other air pipe extends to the lower side of the fixed rubber plug 8.

[0020] Working principle: The following are the explanations of the pumping equipment: The principle of the pumping unit in oil production mainly includes the following aspects. The pumping unit is powered by a power machine, and the high-speed rotation is converted into a low-speed rotation through a reducer, and then the rotational motion is converted into the up and down reciprocating motion of the donkey head through a crank, a connecting rod, and a walking beam mechanism. Finally, the deep well pump is driven by the suspension assembly to extract the oil from underground to the ground. Its essence is to generate a sufficient negative pressure environment through the internal piston parts to suck out liquids such as oil in the well. The simplest example is the water well pumping equipment. The principle of water well pumping mainly depends on the combination of pistons and lever devices. There is a closable rubber valve at the bottom of the wellbore, which will push the valve open when the water comes up. The piston structure connected to the hand crank inside the wellbore is used to discharge the air below to form a vacuum area. The internal and external pressure difference generated by this process causes the water at the bottom of the well to slowly rise and fill the vacuum area. Since the piston and the rubber valve are both one-way valves, the water can only rise but cannot flow back, thereby realizing the function of pumping water, which is applied to the pumping process in oil production.

[0021] Combination Figure 1 and Figure 3To explain, the overall structure is only that the movable sleeve 4 slides along the vertical direction between the electric straight-moving component 3 and the shell 1, and the directional sleeve 6 therein is essentially fixedly connected to the shell 1. Specifically, it is necessary to ensure that the position of the directional sleeve 6 remains unchanged. For this purpose, it is necessary to install the directional sleeve 6 inside the shell 1 with a support rod or other structure; and the basic principle of oil extraction in the present invention is still based on a negative pressure environment. The key is to use the air nozzle component 5 to change the pressure environment inside the directional sleeve 6 through the air pump component through the air nozzle component 5. The essence of the air nozzle component 5 is two air pipes, specifically one of which is not connected to the inflatable balloon component 11. The second air pipe is connected to the inflatable balloon 11, and the other air pipe is connected to the inflatable balloon 11, so that the specific oil extraction process includes the following contents: S1: First, the inflatable balloon 11 is inflated through one of the air pipes, so that the inflatable balloon 11 is fully expanded to block the inner wall position of the lower vertebral member 602, so that it can be understood that the overall directional sleeve 6 is completely blocked by the inflatable balloon 11. In this state, the upper pipe 601 in the overall directional sleeve 6 is quickly evacuated through another air pipe, so that the lower inner position of the upper pipe 601 corresponding to the fixed rubber plug 8 forms a negative pressure environment; S2: S1 is used as the medium Based on the contents of the introduction, since the lower side of the overall shell 1 is in an open state, it can be understood that the lower side of the shell 1 contacts the upper surface of the oil medium. In this state, when the air pipe connected to the inflatable balloon member 11 quickly deflates the inflatable balloon member 11, its essence is to "unblock" the lower vertebral member 602 by the inflatable balloon member 11. In this state, affected by the negative pressure environment, part of the oil medium is sucked into the internal position of the directional sleeve 6, and then the inflatable balloon member 11 is quickly inflated through the air pipe, so that the inflatable balloon member 11 is restored to the state of blocking the lower vertebral member 602; S3: Combined with The relevant contents in S1 and S2 illustrate again that: in the initial state, the directional sleeve 6 is relatively fixed to the shell 1, and the movable sleeve 4 has the ability to move up and down relative to the shell 1. Therefore, during the S1 process, it is necessary to ensure that the movable sleeve 4 moves downward so that a contact sealing action occurs between the directional sealing ring 10 inside the reverse flow sleeve 401 and the upper side position of the upper pipe 601. Compared with the conventional sliding process, the directional sealing ring 10 in the overall sealing process will not have excessive friction loss, so that the negative pressure environment inside the upper pipe 601 can be maintained by the directional sealing ring 10.

[0022] Embodiment 2: Based on the working principle in Embodiment 1, the overall oil pumping process is supplemented as follows: the cross-section of the gap baffle plate 9 is in the shape of a downwardly curved arch, and the gap baffle plate 9 is connected to the inside of the lower cone 602, a gap is provided between the gap baffle plate 9 and the inner wall of the lower cone 602, and the upper curved surface of the gap baffle plate 9 is connected to the inflatable balloon member 11, the cross-section of the lower cone 602 is in the shape of a truncated cone, and a resistance ring sleeve 7 is provided between the lower outer wall of the lower cone 602 and the inner wall of the shell 1, the cross-section of the resistance ring sleeve 7 is in a U-shape, and the curved surface on one side of the resistance ring sleeve 7 is connected to the outer wall of the lower cone 602, and the curved surface on the other side of the resistance ring sleeve 7 is kept tangent to the inner wall of the shell 1, and a reverse flow sleeve 401 is installed on the outer wall position of the movable sleeve 4 corresponding to the inner side of the shell 1, the lower end of the reverse flow sleeve 401 is in an open shape, and a gap is provided between the lower end position of the reverse flow sleeve 401 and the upper surface of the lower cone 602.

[0023] Solution Description: Combined with Figure 3 It is explained in part S1 that the function of the gap baffle 9 is to limit the deformation process of the inflatable balloon member 11. Because the gap baffle 9 is fixedly mounted on the lower cone member 602 and the gap baffle 9 cannot directly interfere with the flow process of the oil medium, it is first necessary to ensure that there is a gap between the gap baffle 9 and the housing 1. Therefore, when the inflatable balloon member 11 is inflated, the lower side of the inflatable balloon member 11 is blocked by the gap baffle 9, resulting in the inflatable balloon member 11 can only expand and deform upward; In the oil pumping process, the negative pressure environment is mainly utilized. After the negative pressure environment is formed inside the upper pipe 601, it is necessary to ensure that the inflatable balloon component 11 is completely out of contact with the lower cone component 602 after rapid vacuuming. For this purpose, it is necessary to ensure that the upper side of the inflatable balloon component 11 needs to move downward. The purpose is that after the inflatable balloon component 11 has completed the vacuuming action, the inflatable balloon component 11 is still in contact with the inner wall of the lower cone component 602 due to the negative pressure environment, thereby affecting the oil pumping process. For this purpose, it is necessary to ensure that the upper end of the inflatable balloon component 11 shows a downward moving trend after vacuuming. For this reason, the air pipe connecting the inflatable balloon component 11 is limited to a hose.

[0024] Embodiment 3: In combination with Embodiment 1 and Embodiment 2, the oil output process is supplemented with explanations: the upper pipe fitting 601 is located inside the reverse flow sleeve 401, and a directional sealing ring 10 corresponding to the upper end position of the upper pipe fitting 601 is installed at the top position of the reverse flow sleeve 401, and an oil change bin 102 is arranged inside the reverse flow sleeve 401 through the upper pipe fitting 601, the movable sleeve 4 is located in the internal position of the upper pipe fitting 601, and the lower end position of the movable sleeve 4 is higher than the lower end position of the reverse flow sleeve 401, and an electric straight-moving component 3 corresponding to the movable sleeve 4 is installed at the upper end position of the shell 1.

[0025] Solution description: In combination with the relevant contents in Example 1 and Example 2, according to the upper pipe 601 and the pipe wall of the lower part of the movable sleeve 4, because the reverse flow sleeve 401 forms an inverted U-shaped channel through the upper pipe 601, and the channel is separated by the directional sealing ring 10, the channel is set as the oil change tank 102, a part of the oil change tank 102 is connected with the power storage oil tank 103, and the other part is connected with the inside of the oil storage tank 101. Similarly, the internal position of the corresponding movable sleeve 4 is set as the power storage oil tank 103, and combined with the relevant contents in S1~S3, the following parts are supplemented: S4: Under negative pressure environment, the inhaled oil medium will be completely filled in the power storage oil tank 103 and the internal part of the oil change tank 102. Figure 3 It can be understood that: because the lower end of the movable sleeve 4 is higher than the lower end of the reverse sleeve 401, the liquid level of the power storage oil tank 103 is higher than that of the oil change tank 102. According to the principle of liquid level balance, when the oil outlet 2 is in a temporarily blocked state, the liquid level of the oil change tank 102 should be exactly the same as that of the oil storage tank 101. However, because the oil medium will be completely filled into the power storage oil tank 103, the liquid level of the oil medium in the power storage oil tank 103 will be higher than that of the oil change tank 102. However, in this state, because the reverse sleeve 4 01 The upper end position is sealed by the directional rubber plug 10, so that the oil medium in the power storage tank 103, the oil storage tank 101 and the oil change tank 102 will not have circulation problems; S5: When the movable sleeve 4 and the reverse flow sleeve 401 are driven by the electric straight-moving component 3 to move upward slightly, the directional rubber plug 10 therein is separated from the upper end position of the upper pipe 601. In this state, because the liquid level of the oil medium in the power storage tank 103 is higher than the liquid level of the oil medium in the oil change tank 102, according to the principle of liquid level balance, the oil medium in the power storage tank 103 will slowly rise into to the oil change tank 102 and even to the oil storage tank 101, until the liquid levels in the power storage tank 103, the oil change tank 102 and the oil storage tank 101 are consistent; S6: In combination with the relevant content in S5, it should be explained that: because it is necessary to ensure that the overall structure can continuously extract the oil medium, in this process, it is necessary to follow the relevant contents in S1~S4, and its essence is to first suck the oil medium into the interior of the upper pipe 103, and then re-block the internal space of the directional sleeve 6, and finally use the liquid level balance principle to reflow the oil medium to the oil change tank 101, so as to The oil outlet 2 needs to be kept open to ensure that the oil medium continues to flow out of the oil outlet 2. The overall device only includes the sliding process of the movable sleeve 4, but no sliding friction damage will occur. Instead, it mainly relies on the contact sealing process from the directional rubber plug 10; and the resistance ring sleeve 7 is essentially a connecting structure between the directional sleeve 6 and the shell 1, but one side of the resistance ring sleeve 7 is not directly fixedly connected to the shell 1, but will rely on the pressure of the oil medium in the oil storage tank 101 to make the resistance ring sleeve 7 more closely contact the inner wall of the shell 1.

[0026] In summary: the purpose of oil pumping is achieved in a negative pressure environment. The difference lies in: optimizing and improving the sealing performance of its internal structure, adopting a contact sealing form inside the overall device, when relative sliding occurs between the movable sleeve and the directional sleeve, essentially no friction loss caused by sliding will occur, and the interior of the overall equipment only uses the oil change oil tank between the upper pipe fitting and the reverse flow sleeve as the key structure, among which the sealing effect is generated by the directional sealing ring contacting the upper pipe fitting, and it is also necessary to explain that: the flow process of oil utilizes the principle of liquid level balance, and the oil pumping process is based on the change of air pressure, but the "static" transfer process of the oil medium is realized by hydraulic power. On the one hand, it will not directly destroy the pressure environment in the equipment, and on the other hand, it also ensures the oil pumping efficiency and oil pumping status.

[0027] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic static wear-free oil pumping device, comprising a housing (1), characterized in that: The housing (1) is provided with a movable sleeve (4) and a directional sleeve (6) arranged from top to bottom. The movable sleeve (4) and the housing (1) are slidably connected in the vertical direction. The directional sleeve (6) is composed of an upper pipe member (601) and a lower cone member (602) arranged from top to bottom. An oil storage bin (101) is arranged between the inner wall of the housing (1) and the outer wall of the movable sleeve (4). A power storage oil bin (103) is arranged between the movable sleeve (4) and the upper pipe member (601). A fixed rubber plug (8) is installed at the upper end of the movable sleeve (4). An air nozzle assembly (5) is arranged on the fixed rubber plug (8). An inflatable balloon member (11) and a gap baffle (9) are arranged at the lower side of the lower cone member (602). An oil outlet (2) is installed on the outer wall of the housing (1) at a position below the oil storage bin (101), and the lower side of the housing (1) is in an open shape.

2. The hydraulic static wear-free oil pumping equipment according to claim 1, characterized in that: The air nozzle assembly (5) is used to connect to the air pump assembly, and the air nozzle assembly (5) is composed of two air pipes, one of which extends downward into the inflatable balloon component (11) and is connected to the inside of the inflatable balloon component (11), and the other of which extends to the lower side of the fixed rubber plug (8).

3. The hydraulic static wear-free oil pumping equipment according to claim 1, characterized in that: The cross section of the gap baffle (9) is in the shape of an arch that bends downward, and the gap baffle (9) is connected to the interior of the lower cone (602), a gap is provided between the gap baffle (9) and the inner wall of the lower cone (602), and the upper curved surface of the gap baffle (9) is connected to the inflatable balloon (11).

4. The hydraulic static wear-free oil pumping equipment according to claim 1, characterized in that: The cross section of the lower cone (602) is truncated cone-shaped, and a resistance ring (7) is provided between the lower outer wall of the lower cone (602) and the inner wall of the shell (1). The cross section of the resistance ring (7) is U-shaped, and the curved surface on one side of the resistance ring (7) is connected to the outer wall of the lower cone (602), and the curved surface on the other side of the resistance ring (7) is tangent to the inner wall of the shell (1).

5. The hydraulic static wear-free oil pumping equipment according to claim 1, characterized in that: A reverse flow sleeve (401) is installed on the outer wall position of the movable sleeve (4) corresponding to the interior of the shell (1); the lower end of the reverse flow sleeve (401) is open, and a gap is provided between the lower end of the reverse flow sleeve (401) and the upper surface of the lower cone (602).

6. The hydraulic static wear-free oil pumping equipment according to claim 5, characterized in that: The upper pipe (601) is located inside the reverse flow sleeve (401), a directional sealing ring (10) corresponding to the upper end of the upper pipe (601) is installed at the top end of the reverse flow sleeve (401), and an oil change tank (102) is arranged inside the reverse flow sleeve (401) through the upper pipe (601).

7. The hydraulic static wear-free oil pumping equipment according to claim 6, characterized in that: The movable sleeve (4) is located in an internal position of the upper tube (601), and the lower end position of the movable sleeve (4) is higher than the lower end position of the reverse flow sleeve (401).

8. The hydraulic static wear-free oil pumping equipment according to claim 1, characterized in that: An electric straight-moving assembly (3) corresponding to the movable sleeve (4) is installed at the upper end of the housing (1).

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