Grease injection device

Abstract

The utility model belongs to the field of oil field grease injection equipment, and particularly relates to a grease injection device. The device comprises a grease injection gun barrel, a sealing grease conveying part and a hydraulic oil conveying part. The grease injection gun barrel comprises a main body of a cylindrical structure and a piston arranged in the main body. The sealing grease delivery portion includes a sealing grease delivery tube configured to communicate with the first end of the body. The hydraulic oil delivery portion includes a hydraulic oil delivery pipe configured to communicate with the second end of the main body. The sealing grease conveying pipe is constructed to be capable of guiding sealing grease into the main body, the piston is constructed to be capable of descending in response to injection of the sealing grease, the hydraulic oil conveying pipe is constructed to be capable of guiding hydraulic oil into the main body, and the piston is constructed to be capable of ascending in response to injection of the hydraulic oil. And the sealing grease in the main body is injected into equipment to be subjected to grease injection through the sealing grease conveying pipe. According to the device, electric hydraulic injection of the sealing grease can be achieved, and the automation level and the working efficiency of grease injection operation are improved.

Description

Technical Field

[0001] The utility model belongs to the field of oilfield grease injection equipment, in particular to a grease injection device. Background Art

[0002] According to the well control management system, Christmas tree valves and flanges need to be sealed with grease twice a year to ensure the sealing of the flanges and valves. With the development of oil fields, the number of production wells has increased rapidly, and the demand for grease injection for single-well wellhead equipment, process equipment, and pipeline gates has also increased significantly. However, the manual grease injection tools used on site are far from meeting production needs. They have shortcomings such as long grease injection cycles, easy tool damage, complex operation, poor grease injection results, the inability to measure the grease injection volume, low grease injection efficiency, and high labor intensity.

[0003] The above defects have seriously affected the smooth progress of oil well equipment maintenance work and have also had an adverse impact on the production efficiency of oil wells. Utility Model Content

[0004] Aiming at solving some or all of the problems in the prior art, the utility model provides a grease injection device.

[0005] The grease injection device comprises:

[0006] The grease gun barrel comprises a main body constructed as a cylindrical structure and a piston arranged inside the main body;

[0007] a sealing grease delivery portion, comprising a sealing grease delivery pipe configured to communicate with the first end of the main body; and

[0008] a hydraulic oil delivery portion, comprising a hydraulic oil delivery pipe configured to communicate with the second end of the main body;

[0009] Among them, the sealing grease delivery pipe is constructed to be able to introduce sealing grease into the interior of the main body, and the piston is constructed to be able to move downward in response to the injection of sealing grease. The hydraulic oil delivery pipe is constructed to be able to introduce hydraulic oil into the interior of the main body, and the piston is constructed to be able to move upward in response to the injection of hydraulic oil, so as to inject the sealing grease inside the main body into the equipment to be greased through the sealing grease delivery pipe.

[0010] As an extension of the above technical solution, the present invention also provides the following embodiments:

[0011] The grease gun barrel includes a metering rod connected to the piston, and a through hole is opened on the top surface of the main body. The metering rod is constructed to be able to pass through the through hole and extend out of the top surface, and can perform telescopic movement with the movement of the piston.

[0012] The sealant delivery part includes a first control valve provided on the sealant delivery pipe.

[0013] The hydraulic oil delivery part includes a second control valve provided on the hydraulic oil delivery pipe.

[0014] It includes a bracket part configured to support the grease gun barrel.

[0015] The bracket part includes a first bracket configured as a "square" shape and a second bracket configured as a "U" shape. The first bracket is arranged horizontally, the second bracket is arranged vertically and is configured to be connected to the first bracket through the open end. The first end is connected to the top of the second bracket, and the middle part of the main body or the second end is connected to the first bracket.

[0016] The bracket part includes a third bracket arranged vertically and configured as a "U" shape. The third bracket is configured to be connected to the first bracket through the open end and can allow the main body to pass through the vacant part in the middle.

[0017] The bracket part includes a fourth bracket configured as a "square" shape and connected to the first bracket. The first bracket and the fourth bracket are integrally configured as a "day" shape, and the projection of the second end in the horizontal direction is inside the projection of the fourth bracket in the horizontal direction.

[0018] The bracket part includes a fifth bracket configured as a "U" shape. The fifth bracket is arranged vertically and is configured to be connected to the fourth bracket through the open end.

[0019] The bracket part includes support columns provided below the first bracket and the fourth bracket.

[0020] The advantages of the present utility model compared with the prior art are as follows:

[0021] First, through the design of the grease gun barrel, the sealant delivery part and the hydraulic oil delivery part, the electro-hydraulic injection of sealant is realized, which improves the automation degree and working efficiency of the greasing operation and reduces the labor intensity of the staff.

[0022] Second, by providing a measuring rod connected to the piston, the accurate measurement of the greasing amount is realized, which is beneficial for the staff to accurately judge whether the equipment to be greased reaches the predetermined greasing amount, thus helping to improve the on-site management level of the greasing operation, reducing the waste of sealant and lowering the maintenance cost. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the greasing device according to the present utility model;

[0024] Figure 2 This is a schematic diagram of an axial cross-section of a grease gun barrel and its connected components.

[0025] All drawings in this utility model are schematic diagrams for illustrating structures and principles, and are not necessarily drawn according to the designed sizes and proportions.

[0026] The specific meanings of the reference numerals in the figures are as follows:

[0027] 1. Grease gun barrel; 11. Main body; 111. First end; 112. Second end; 113. Top surface; 1131. Through hole; 11311. Second sealing ring; 12. Piston; 121. First sealing ring; 13. Metering rod; 2. Sealing grease delivery part; 21. Sealing grease delivery pipe; 22. First control valve; 3. Hydraulic oil delivery part; 31. Hydraulic oil delivery pipe; 32. Second control valve; 4. Bracket part; 41. First bracket; 42. Second bracket; 43. Third bracket; 44. Fourth bracket; 45. Fifth bracket; 46. Support column; 100. Grease injection device. DETAILED DESCRIPTION

[0028] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0029] Figure 1 and Figure 2 The figure is a schematic structural diagram of a grease injection device 100 according to the present invention. As shown in the figure, the grease injection device 100 includes a grease gun barrel 1, a sealing grease delivery unit 2, and a hydraulic oil delivery unit 3. The grease gun barrel 1 includes a main body 11 having a cylindrical structure and a piston 12 disposed within the main body 11 and configured to slide along the axial direction of the main body 11. The main body 11 includes a first end 111 and a second end 112. The sealing grease delivery unit 2 includes a sealing grease delivery pipe 21 configured to communicate with the first end 111 of the main body 11. The hydraulic oil delivery unit 3 includes a hydraulic oil delivery pipe 31 configured to communicate with the second end 112 of the main body 11.

[0030] During the specific operation, the staff connects the sealing grease delivery pipe 21 to the external sealing grease source, and the sealing grease is added to the interior of the main body 11 through the sealing grease delivery pipe 21. As the sealing grease is gradually added, the sealing grease pushes the piston 12 to move downward continuously until the interior of the main body 11 is filled with sealing grease or the amount of sealing grease added reaches the expected amount. Afterwards, the staff disconnects the connection between the sealing grease source and the sealing grease delivery pipe 21, connects the sealing grease delivery pipe 21 to the equipment to be greased using connecting components such as high-pressure hoses, and connects the external hydraulic source to the hydraulic oil delivery pipe 31. Afterwards, the staff turns on the external hydraulic source, and the hydraulic oil enters the interior of the main body 11 and pushes the piston 12 upward. The sealing grease inside the main body 11 is pushed by the piston 12 and injected into the equipment to be greased through the sealing grease delivery pipe 21 to perform the grease injection operation. After a single grease injection operation is completed, the external hydraulic source is turned off, and the above steps are repeated to achieve grease injection operations on different equipment to be greased.

[0031] Through this design, electric hydraulic injection of sealing grease is achieved, which improves the automation and work efficiency of the grease injection operation, reduces the labor intensity of the staff, promotes the smooth progress of oil well equipment maintenance work, and improves the production efficiency of the oil well.

[0032] like Figure 2 As shown, in some embodiments of the present invention, in order to ensure that the piston 12 can move in response to changes in pressure, and to ensure that the hydraulic oil and sealing grease on both sides of the piston 12 do not mix, a first sealing ring 121 is provided on the side wall of the piston 12.

[0033] like Figure 1 As shown, in some embodiments of the present invention, the grease gun barrel 1 includes a metering rod 13 connected to the end surface of the piston 12. A through hole 1131 is formed in the top surface 113 of the main body 11. The metering rod 13 is provided with a scale indicating length. The rod 13 is configured to extend through the through hole and extend beyond the top surface 113, and to extend and retract with the movement of the piston 12. Furthermore, the outer diameter of the metering rod 13 matches the inner diameter of the through hole 1131, and a dynamic seal is formed between the rod 13 and the through hole 1131. This design allows workers to observe the change in length of the metering rod 13 each time they perform grease injection. Since the inner diameter of the main body 11 is known, the specific amount of grease injected can be calculated using the inner diameter of the main body 11 and the change in length of the metering rod 13. This enables precise measurement of the grease injection amount, enabling workers to accurately determine whether the equipment being greased has reached the desired grease injection volume. This improves on-site management of grease injection operations, reduces sealant waste, and lowers maintenance costs.

[0034] like Figure 2As shown, in some embodiments of the present invention, a second sealing ring 11311 is provided on the inner wall of the through hole 1131 to achieve dynamic sealing between the metering rod 13 and the through hole 1131 .

[0035] like Figure 1 As shown, in some embodiments of the present invention, in order to effectively control the opening and closing states of the sealing grease delivery pipe 21 to meet the needs of various scenarios, the sealing grease delivery part 2 also includes a first control valve 22 arranged on the sealing grease delivery pipe 21.

[0036] like Figure 1 As shown, in some embodiments of the present invention, in order to effectively control the opening and closing states of the hydraulic oil delivery part 31 to meet the needs of various scenarios, the hydraulic oil delivery part 3 also includes a second control valve 32 arranged on the hydraulic oil delivery pipe 31.

[0037] like Figure 1 As shown, in some embodiments of the present invention, in order to adjust and fix the posture of the grease gun barrel 1 so that the grease gun barrel 1 can more conveniently perform the grease injection operation, the grease injection device 100 includes a bracket portion 4 configured to support the grease gun barrel 1.

[0038] like Figure 1 As shown, in some embodiments of the present invention, the bracket portion 4 includes a first bracket 41 configured in a "mouth" shape and a second bracket 42 configured in a "U" shape. The first bracket 41 is arranged horizontally, and the second bracket 42 is arranged longitudinally and is configured to be connected to the first bracket 41 through an open end. The first end 111 of the main body 11 is connected to the top of the second bracket 42. According to the length of the main body 11, the middle part or the second end 112 of the main body 11 is connected to the first bracket 41. Through this design, the first end 111 of the main body 11 is higher than the second end 112, so that the setting position of the sealing grease delivery pipe 21 is higher than the hydraulic oil delivery pipe 31, so that the hydraulic oil does not need to be raised to a high height to play a role, and the position of the equipment to be greased is generally a certain distance from the ground. This design has positive significance for both the injection operation of the hydraulic oil and the grease injection operation.

[0039] Preferably, the second bracket 42 is connected to a side edge of the first bracket 41 .

[0040] like Figure 1As shown, in some embodiments of the present utility model, the support portion 4 includes a third support 43. The third support 43 is longitudinally arranged and configured in a "U" shape, and the third support 43 is further configured to be connected to the first support 41 through the open end and enable the main body 11 to pass through the vacant portion in the middle thereof. Through this design, it plays a role in strengthening the placement of the main body 11, which helps the grease gun barrel 1 maintain a stable working state.

[0041] Preferably, the third support 43 is connected to one side edge of the first support 41, and the first support 43 and the second support 42 are arranged opposite to each other.

[0042] Preferably, the main body 11 is configured to be fixedly connected to the third support 43 through its upper end.

[0043] As Figure 1 shown, in some embodiments of the present utility model, the support portion 4 includes a fourth support 44. The fourth support 44 is configured in a "square" shape, which is connected to the first support 41, and the fourth support 44 and the first support 41 are integrally configured in a "day" shape. Additionally, the projection of the second end 112 of the main body 11 in the transverse direction is inside the projection of the fourth support 44 in the transverse direction. Through this design, it plays a role in strengthening the placement of the main body 11, which helps the grease gun barrel 1 maintain a stable working state.

[0044] As Figure 1 shown, in some embodiments of the present utility model, the support portion 4 includes a fifth support 45. The fifth support 45 is configured in a "U" shape, which is longitudinally arranged and configured to be connected to the fourth support 44 through the open end. Through this design, it provides a handrail for the staff to carry and move the grease injection device 100, improving the convenience and safety for the staff to carry the grease injection device 100.

[0045] Preferably, the fifth support 45 is connected to one side edge of the fourth support 44, and the fifth support 45 and the third support 43 are arranged opposite to each other.

[0046] As Figure 1 shown, in some embodiments of the present utility model, the support portion 4 includes support columns 46 arranged below the first support 41 and the fourth support 44. Through this design, the grease gun barrel 1 can be lifted as a whole to a certain height from the ground, so as to meet the requirements of complex construction sites, and also greatly reduce the interference of external equipment to the grease gun barrel 1, which helps to improve the safety and stability of the operation of the grease injection device 100.

[0047] Preferably, a support foot 46 is arranged below each of the two ends of the right side edge of the first support 41 and below each of the two ends of the left side edge of the fourth support 44.

[0048] As Figure 1 As shown, in some embodiments of the present invention, in order to meet the needs of different application scenarios and realize grease injection operations on multiple devices to be greased at the same time, the grease injection device 100 includes no less than two grease gun barrels 1, and each grease gun barrel 1 is provided with a sealing grease delivery part 2 and a hydraulic oil delivery part 3.

[0049] According to the grease injection device 100 of the present invention, the design of the grease injection gun barrel 1, the sealing grease delivery unit 2, and the hydraulic oil delivery unit 3 enables electric hydraulic injection of sealing grease, thereby improving the automation and work efficiency of the grease injection operation and reducing the labor intensity of the staff. In addition, by providing a metering rod 13 connected to the piston 12, accurate measurement of the injected grease amount is achieved, which helps the staff to accurately determine whether the equipment to be greased has reached the predetermined injection amount, thereby helping to improve the on-site management level of the grease injection operation, and can also reduce the waste of sealing grease and reduce maintenance costs.

[0050] In this utility model, the specific meanings of the terms "upper", "lower", "left", "right", "inside", "outside", "middle", "side" and so on when expressing directions are as follows: Figure 1 The drawing state of the grease injection device 100 is for reference.

[0051] Finally, it should be noted that while the present invention has been described in detail with reference to preferred embodiments, various modifications may be made and components may be substituted with equivalents without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A grease injection device, characterized in that: Comprising: A grease gun barrel (1), including a main body (11) configured as a cylindrical structure, and a piston (12) disposed inside the main body (11); A sealant delivery part (2), including a sealant delivery pipe (21) configured to communicate with the first end (111) of the main body (11); and A hydraulic oil delivery part (3), including a hydraulic oil delivery pipe (31) configured to communicate with the second end (112) of the main body (11); Wherein, the sealant delivery pipe (21) is configured to introduce sealant into the interior of the main body (11), the piston (12) is configured to move downward in response to the injection of sealant, the hydraulic oil delivery pipe (31) is configured to introduce hydraulic oil into the interior of the main body (11), and the piston (12) is configured to move upward in response to the injection of hydraulic oil, so as to inject the sealant in the main body (11) into the equipment to be greased through the sealant delivery pipe (21).

2. The grease injection device according to claim 1, characterized in that: The grease gun barrel (1) includes a measuring rod (13) configured to be connected to the piston (12). A through hole (1131) is provided on the top surface (113) of the main body (11). The measuring rod (13) is configured to pass through the through hole (1131) and extend out of the top surface (113), and can perform telescopic movement along with the movement of the piston (12).

3. The grease injection device according to claim 2, characterized in that: The sealant delivery part (2) includes a first control valve (22) provided on the sealant delivery pipe (21).

4. The grease injection device according to claim 3, characterized in that: The hydraulic oil delivery part (3) includes a second control valve (32) provided on the hydraulic oil delivery pipe (31).

5. The grease injection device according to any one of claims 1 to 4, characterized in that: Including a support part (4) configured to support the grease gun barrel (1).

6. The grease injection device according to claim 5, characterized in that: The support part (4) includes a first support (41) configured as a "square" shape and a second support (42) configured as a "U" shape. The first support (41) is arranged horizontally, the second support (42) is arranged vertically and is configured to be connected to the first support (41) through the open end. The first end (111) is connected to the top of the second support (42), and the middle part or the second end (112) of the main body (11) is connected to the first support (41).

7. The grease injection device according to claim 6, characterized in that: The support part (4) includes a third support (43) arranged vertically and configured as a "U" shape. The third support (43) is configured to be connected to the first support (41) through the open end and can allow the main body (11) to pass through the vacant part in the middle thereof.

8. The grease injection device according to claim 7, characterized in that: The support part (4) includes a fourth support (44) configured as a "square" shape and connected to the first support (41). The first support (41) and the fourth support (44) are integrally configured as a "day" shape, and the projection of the second end (112) in the horizontal direction is inside the projection of the fourth support (44) in the horizontal direction.

9. The grease injection device according to claim 8, characterized in that: The support part (4) includes a fifth support (45) configured as a "U" shape. The fifth support (45) is arranged vertically and is configured to be connected to the fourth support (44) through the open end.

10. The grease injection device according to claim 9, characterized in that: The bracket portion (4) comprises a support column (46) arranged below the first bracket (41) and the fourth bracket (44).

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