Shale gas plunger fracturing pump connecting rod

Abstract

The utility model discloses a shale gas plunger fracturing pump connecting rod which comprises a rod body, an installation ring is in lap joint with the left side of the rod body, a connecting piece is arranged outside the installation ring, a first connecting ring is in lap joint with the interior of the installation ring, a second connecting ring is in lap joint with the interior of the rod body, and a second fixing plate is fixedly connected to the upper portion of the first connecting ring. A first fixing plate is fixedly connected to the upper portion of the second connecting ring, a lubricating structure is arranged in the rod body and connected with the first fixing plate, the lubricating structure is connected with a second fixing plate, and a clamping structure is arranged in the second fixing plate. By arranging a lubricating structure, a first fixing plate and a second fixing plate, through cooperation of a first lubricating pipe, a second lubricating pipe, an oil cylinder and an expansion piece, the joint can be uniformly lubricated, and the phenomenon that the joint is greatly abraded under the action of long-term high pressure and cyclic load is avoided; therefore, the service life of the connecting rod and the overall performance of the pump are guaranteed, and subsequent operation procedures are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fracturing pump technical field, concretely is a shale gas plunger fracturing pump connecting rod. BACKGROUND

[0002] In the exploitation process of shale gas and other unconventional natural gas, fracturing technology is a commonly used method, which produces cracks by injecting high-pressure fluid into the formation, thereby releasing trapped natural gas, and the plunger fracturing pump is the key equipment for implementing this process, and its connecting rod assembly plays a crucial role in pumping fluid.

[0003] Some fracturing pump machining technology field utility model patents are disclosed in the prior art, including the utility model patent with application number 202223507703.2, which discloses a new type of fracturing pump connecting rod, the connecting rod big end is fixedly connected to one end of the connecting rod body, and is connected by the hexagonal head bolt passing through the connecting rod body and the connecting rod big end and the hexagonal locking flange nut, the other end of the connecting rod body is matched with the connecting rod bushing, the inside of the connecting rod big end is a large circle, the inside of the connecting rod bushing is a small circle, there is a lubrication channel in the middle of the connecting rod body, the large circle of the connecting rod big end and the small circle of the connecting rod bushing are connected by a 7-degree angle, and the connecting parts are all connected by a smooth round corner; its advantages are high strength, no internal stress, reliable performance, no damage to the internal structure of the pump head body, which is beneficial to prolonging the service life of the pump head body, good wear resistance and corrosion resistance.

[0004] However, the above-mentioned method has the following defects in actual use: although it can prolong the service life of the pump head body, most of the connecting parts of the rotating rod do not have a lubricating structure, which may cause the connecting part to wear out under the action of long-term high pressure and cyclic load, thereby affecting the service life of the connecting rod and the overall performance of the pump. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a shale gas plunger fracturing pump connecting rod to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a shale gas plunger fracturing pump connecting rod, comprising a rod body, a mounting ring is lapped on the left side of the rod body, a connecting piece is arranged outside the mounting ring, a connecting ring one is lapped inside the mounting ring, a connecting ring two is lapped inside the rod body, a fixed plate two is fixedly connected above the connecting ring one, a fixed plate one is fixedly connected above the connecting ring two, a lubricating structure is arranged inside the rod body, the lubricating structure is connected with the fixed plate one, the lubricating structure is connected with the fixed plate two, a clamping structure is arranged inside the fixed plate two, the lubricating structure comprises a lubricating pipe one, a lubricating pipe two, an oil cylinder and an extender, an oil cylinder is slidably connected inside the oil cylinder, and a connecting pipe is fixedly connected to one end of the oil cylinder.

[0007] As a further preferred of the technical solution, the connecting ring one is overlapped with the connecting ring two, and the mounting ring is connected with the rod body through the connecting piece.

[0008] As a further preferred of the technical solution, the lubricating pipe one is fixedly connected in the inner, the lubricating pipe two is fixedly connected in the fixed plate two, the lubricating pipe one is connected with the lubricating pipe two, and the telescopic device is fixedly connected above the rod body.

[0009] As a further preferred of the technical solution, one end of the telescopic device is connected with the moving rod, the oil cylinder is connected with the lubricating pipe one through the connecting pipe, and the oil cylinder is fixedly connected above the rod body.

[0010] As a further preferred of the technical solution, the clamping structure comprises a clamping ring one and a clamping ring two, one end of the clamping ring one is fixedly connected with the lubricating pipe one, one end of the clamping ring two is fixedly connected with the lubricating pipe two, one side of the clamping ring one is fixedly connected with a stand column, and the stand column is clamped in the clamping ring two.

[0011] As a further preferred of the technical solution, the clamping ring one is overlapped with the clamping ring two, the clamping ring one is rotatably connected with a rotating ring outside, one side of the rotating ring is fixedly connected with a clamping plate, and the clamping plate is clamped in the stand column.

[0012] As a further preferred of the technical solution, the clamping ring two is connected with a limiting block outside, the clamping plate is overlapped with the limiting block, a screw is arranged in the rotating ring, and the rotating ring is connected with the clamping ring one through the screw.

[0013] The utility model provides a kind of shale gas plunger fracturing pump connecting rod, with following beneficial effects:

[0014] (1) the utility model discloses a lubricating structure, fixed plate one and fixed plate two are set, when the connecting rod and the connecting place of pump body are lubricated, the telescopic device is pushed to the moving rod, the lubricating liquid in the oil cylinder is transported to the lubricating pipe one and the lubricating pipe two by the connecting pipe when moving, and the lubricating pipe one and the lubricating pipe two are lubricated by the built-in spray opening, the connecting place is lubricated, the connecting place is uniformly lubricated by the cooperation between the lubricating pipe one, the lubricating pipe two, the oil cylinder and the telescopic device, the phenomenon that a large number of abrasion occurs under the action of long-term high pressure and cyclic load is avoided, so as to guarantee the service life of the connecting rod and the overall performance of the pump, and reduce subsequent operation process.

[0015] (2) The utility model discloses a quick -witted structure is set up to the contact of lubricating pipe no. 1 and lubricating pipe no. 2, and the clamping ring no. 1 is inserted with the clamping ring no. 2 through the stand, and the rotation is connected with the clamping plate of the stand, and when the clamping plate is in the rotation and is overlapped with the limiting block, the bolt is connected with the clamping ring no. 1 with the screw thread, and lubricating pipe no. 1 and lubricating pipe no. 2 can realize the function of quick assembly, and the subsequent lubricating pipe no. 1 and lubricating pipe no. 2 are replaced or the maintenance treatment of being convenient for. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the three-dimensional structure schematic diagram of the utility model's lubricating structure;

[0018] Figure 3 It is the three-dimensional structure schematic diagram of the utility model's clamping structure;

[0019] Figure 4 It is the three-dimensional structure schematic diagram of the utility model's Figure 3 The enlarged structure schematic diagram of A place in the middle;

[0020] In the drawing: 1, the pole body is 2, the mounting ring is 3, the connecting piece is 4, the connecting ring no. 1 is 5, the connecting ring no. 2 is 6, the lubricating structure is 601, lubricating pipe no. 1 is 602, lubricating pipe no. 2 is 603, the oil cylinder is 604, the telescopic ware is 605, the moving pole is 606, the connecting pipe is 7, the clamping structure is 701, the clamping ring no. 1 is 702, the clamping ring no. 2 is 703, the rotation is 704, the stand is 705, the clamping plate is 706, the limiting block is 707, the bolt is 8, the fixed plate no. 1 is 9, the fixed plate no. 2. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model.

[0022] The utility model provides technical scheme: as Figure 1 And Figure 4 As shown in the figure, in the embodiment, a shale gas plunger fracturing pump connecting rod, including pole body 1, the left side of pole body 1 is overlapped with mounting ring 2, mounting ring 2 is equipped with connecting piece 3 outside, mounting ring 2 is overlapped with connecting ring no. 1 4 in, pole body 1 is overlapped with connecting ring no. 2 5, the top of connecting ring no. 1 4 is fixedly connected with fixed plate no. 2 9, the top of connecting ring no. 2 5 is fixedly connected with fixed plate no. 1 8, pole body 1 is equipped with lubricating structure 6, lubricating structure 6 is connected with fixed plate no. 1 8, lubricating structure 6 is connected with fixed plate no. 2 9, fixed plate no. 2 9 is equipped with clamping structure 7, lubricating structure 6 includes lubricating pipe no. 1 601, lubricating pipe no. 2 602, oil cylinder 603 and telescopic ware 604, oil cylinder 603 is slidably connected with oil cylinder 603 in, one end of oil cylinder 603 is fixedly connected with connecting pipe 606

[0023] As Figure 1 And Figure 2 As shown in the drawings, the connecting ring one 4 is overlapped with the connecting ring two 5, the mounting ring 2 is connected with the rod body 1 through the connecting piece 3, the lubricating pipe one 601 is fixedly connected in the inner, the lubricating pipe two 602 is fixedly connected in the fixed plate two 9, the lubricating pipe one 601 is connected with the lubricating pipe two 602, the telescopic device 604 is fixedly connected above the rod body 1, one end of the telescopic device 604 is connected with the moving rod 605, the oil cylinder 603 is connected with the lubricating pipe one 601 through the connecting pipe 606, and the oil cylinder 603 is fixedly connected above the rod body 1.

[0024] By setting the lubricating pipe one 601 and the lubricating pipe two 602, when the telescopic device 604 exerts a pushing force on the moving rod 605, the lubricating pipe one 601 and the lubricating pipe two 602 can lubricate the connecting part through the built-in spray port, so that the connecting part can be uniformly lubricated, and the phenomenon of insufficient lubrication in some areas can be avoided, and the connecting part can be effectively cooled.

[0025] As Figure 3 And Figure 4 The clamping structure 7 includes the clamping ring one 701 and the clamping ring two 702, the clamping ring one 701 is fixedly connected to one end of the lubricating pipe one 601, the clamping ring two 702 is fixedly connected to one end of the lubricating pipe two 602, one side of the clamping ring one 701 is fixedly connected with the stand 704, the stand 704 is clamped in the clamping ring two 702, the clamping ring one 701 is overlapped with the clamping ring two 702, the clamping ring one 701 is rotatably connected with the rotating ring 703 outside, one side of the rotating ring 703 is fixedly connected with the clamping plate 705, the clamping plate 705 is clamped in the stand 704, the clamping ring two 702 is connected with the limiting block 706 outside, the clamping plate 705 is overlapped with the limiting block 706, the rotating ring 703 is provided with the bolt 707 inside, and the rotating ring 703 is connected with the clamping ring one 701 through the bolt 707.

[0026] By setting the limiting block 706, when the rotating ring 703 is driven to rotate on the surface of the clamping ring one 701, the rotating ring 703 drives the clamping plate 705 to be clamped in the stand 704, when the clamping plate 705 is overlapped with the limiting block 706 during rotation, and then drives the bolt 707 to be threadedly connected with the clamping ring one 701, so that the limiting block 706 plays a positioning role for the rotation of the clamping plate 705, and the clamping plate 705 is prevented from being dislocated during rotation, and the rotating ring 703 is conveniently locked subsequently.

[0027] The utility model provides a kind of shale gas plunger fracturing pump connecting rod, specific working principle is as follows:

[0028] When the connecting rod is connected with the pump body, the rod body 1 is contacted with the pump body through the connecting ring two 5, then the mounting ring 2 is connected with the rod body 1 through the connecting ring one 4, then the mounting ring 2 is connected with the rod body 1 through the connecting piece 3, then the lubricating pipe one 601 and the lubricating pipe two 602 are contacted, the clamping ring one 701 is inserted with the clamping ring two 702 through the stand column 704, the rotating ring 703 is rotated on the surface of the clamping ring one 701, the rotating ring 703 drives the clamping plate 705 to be clamped into the stand column 704, when the clamping plate 705 is rotated and contacted with the limiting block 706, the bolt 707 is screwed with the clamping ring one 701;

[0029] When the connecting rod is connected with the pump body, the rod body 1 is contacted with the pump body through the connecting ring two 5, then the mounting ring 2 is connected with the rod body 1 through the connecting ring one 4, then the mounting ring 2 is connected with the rod body 1 through the connecting piece 3, then the lubricating pipe one 601 and the lubricating pipe two 602 are contacted, the clamping ring one 701 is inserted with the clamping ring two 702 through the stand column 704, the rotating ring 703 is rotated on the surface of the clamping ring one 701, the rotating ring 703 drives the clamping plate 705 to be clamped into the stand column 704, when the clamping plate 705 is rotated and contacted with the limiting block 706, the bolt 707 is screwed with the clamping ring one 701;

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connecting rod for a shale gas plunger fracturing pump, comprising a rod body (1), characterized in that: A mounting ring (2) overlaps on the left side of the rod (1). A connector (3) is provided outside the mounting ring (2). A connecting ring one (4) overlaps inside the mounting ring (2). A connecting ring two (5) overlaps inside the rod (1). A fixing plate two (9) is fixedly connected above the connecting ring one (4). A fixing plate one (8) is fixedly connected above the connecting ring two (5). A lubrication structure (6) is provided inside the rod (1). The lubrication structure (6) is connected to the fixing plate one (8). The lubrication structure (6) is connected to the fixing plate two (9). A snap-fit ​​structure (7) is provided inside the fixing plate two (9). The lubrication structure (6) includes a lubrication pipe one (601), a lubrication pipe two (602), an oil cylinder (603), and a telescopic device (604). An oil cylinder (603) is slidably connected inside the oil cylinder (603). A connecting pipe (606) is fixedly connected to one end of the oil cylinder (603).

2. The connecting rod of a shale gas plunger fracturing pump according to claim 1, characterized in that: The first connecting ring (4) overlaps with the second connecting ring (5), and the mounting ring (2) is connected to the rod (1) through the connector (3).

3. The connecting rod of a shale gas plunger fracturing pump according to claim 1, characterized in that: The first lubrication pipe (601) is fixedly connected inside, the second lubrication pipe (602) is fixedly connected inside the second fixing plate (9), the first lubrication pipe (601) and the second lubrication pipe (602) are connected, and the telescopic device (604) is fixedly connected above the rod (1).

4. The connecting rod of a shale gas plunger fracturing pump according to claim 1, characterized in that: One end of the telescopic device (604) is connected to the moving rod (605), and the oil cylinder (603) is connected to the lubrication pipe (601) through the connecting pipe (606). The oil cylinder (603) is fixedly connected above the rod body (1).

5. The connecting rod of a shale gas plunger fracturing pump according to claim 1, characterized in that: The snap-fit ​​structure (7) includes a snap-fit ​​ring one (701) and a snap-fit ​​ring two (702). The snap-fit ​​ring one (701) is fixedly connected to one end of the lubrication pipe one (601), and the snap-fit ​​ring two (702) is fixedly connected to one end of the lubrication pipe two (602). A column (704) is fixedly connected to one side of the snap-fit ​​ring one (701), and the column (704) is snapped into the snap-fit ​​ring two (702).

6. The connecting rod of a shale gas plunger fracturing pump according to claim 5, characterized in that: The first retaining ring (701) overlaps with the second retaining ring (702). The first retaining ring (701) is rotatably connected to a rotating ring (703). A retaining plate (705) is fixedly connected to one side of the rotating ring (703). The retaining plate (705) is engaged in the column (704).

7. The connecting rod of a shale gas plunger fracturing pump according to claim 6, characterized in that: The second retaining ring (702) is externally connected to a limiting block (706), the retaining plate (705) overlaps with the limiting block (706), the rotating ring (703) is provided with a bolt (707), and the rotating ring (703) is connected to the first retaining ring (701) through the bolt (707).

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