Five-cylinder drilling pump casing

Abstract

The utility model discloses a five-cylinder drilling pump casing which comprises a rear wall plate, the top of the rear wall plate is connected with a rear top plate, the left side and the right side of the rear wall plate and the left side and the right side of the rear top plate are connected with a left wall plate and a right wall plate respectively, the front ends of the left wall plate and the right wall plate are connected with a front end plate, and the front end plate is located on a front supporting plate. The rear top plate is connected with the front top plate, the front top plate is located on the bin partition plate, the bin partition plate divides the machine shell into a front end cavity and a rear end cavity, the front end cavity is a piston movement cavity and is divided into a plurality of groups of independent cavities for piston movement through a plurality of front partition plates, and the rear end cavity is a crankshaft, connecting rod and crosshead movement cavity; an inclined front bottom plate is arranged at the bottom of the front end cavity and is connected with the partition plate and the front end plate; an oil pool bottom plate is arranged at the bottom of the rear end cavity and is connected with the rear support plate and the partition plate; the front cavity and the rear cavity are divided into five small cavities, the weight of the machine shell is effectively reduced while the overall supporting strength is improved, and the transportation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling and production equipment, and particularly relates to a housing of a five-cylinder drilling pump. Background Technique

[0002] As a core equipment in the oil and gas drilling and production field, the function of a drilling pump is to provide high-pressure drilling fluid to the wellbore. The drilling fluid has functions such as stabilizing the wellbore to prevent collapse, balancing the formation pressure, transmitting hydraulic power, carrying and suspending cuttings, cleaning the bottom of the well, cooling and lubricating the drill string, etc. in the drilling process. At present, three-cylinder drilling pumps are mainly used in oil fields, but three-cylinder pumps have characteristics such as obvious pressure fluctuations, small power, small displacement, and low pressure, and it is difficult to meet the current field requirements. Therefore, each main engine factory is actively developing various five-cylinder drilling pumps that meet the field requirements.

[0003] To develop a new type of five-cylinder drilling pump with characteristics such as large power, large displacement, high pressure, small fluctuations in displacement and pressure, high reliability, high efficiency, small volume and weight, and strong transportation performance, it is necessary to start from its various components. Therefore, as a key component of the power end and even the entire drilling pump, it is crucial to develop a housing with a small volume, light weight, and fully meeting the requirements of component matching and field needs.

[0004] The solution of the utility model creatively proposes a housing of a five-cylinder drilling pump, which has the characteristics of high crosshead centering accuracy, stable and reliable operation without eccentric wear; small volume, light weight, and high strength, so as to meet the current field requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a housing of a five-cylinder drilling pump to solve the problems raised in the background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A five-cylinder drilling pump housing, including a rear wall plate connected to the rear support plate, the top of the rear wall plate is connected to the rear top plate, the left and right sides of the rear wall plate and the rear top plate are respectively connected to the left wall plate and the right wall plate, the front ends of the left wall plate and the right wall plate are connected to the front end plate, and the front end plate is located on the front support plate; the rear top plate is connected to the front top plate, the front top plate is located on the partition plate, and the partition plate divides the housing into a front cavity and a rear cavity. The front cavity is a piston movement cavity and is divided into several groups of separate cavities by several front partition plates for the piston to move. The rear cavity is a crankshaft, connecting rod, and crosshead movement cavity; the bottom of the front cavity is provided with an inclined front bottom plate and is connected to the partition plate and the front end plate; the bottom of the rear cavity is provided with an oil sump bottom plate connected to the rear support plate and the partition plate; at the same time, the rear cavity is divided into five separate cavities by four main bearing seat support plates, and each cavity is provided with a crosshead cylinder sleeve seat, and the crosshead cylinder sleeve seat is connected to the inner side of the left wall plate, the main bearing seat support plate, and the inner side of the right wall plate that divide the cavity through two crosshead cylinder sleeve seat support plates each on the upper and lower sides; a left main bearing seat is provided on the left wall plate, a left main bearing seat is provided on each of the main bearing seat support plates, and a right main bearing seat is provided on the right wall plate.

[0007] Preferably, a drain port is provided on the front bottom plate for discharging the cylinder sleeve cooling water.

[0008] Preferably, communication ports are opened on the front partition plates to connect the cavities with each other and discharge the cylinder sleeve cooling water, and notches are opened on the main bearing seat support plates to connect the cavities with each other and discharge the lubricating oil.

[0009] Preferably, an oil drain port is provided on the oil sump bottom plate for discharging the lubricating oil.

[0010] Preferably, the front cavity and the rear cavity are completely isolated by the partition plate through sealing.

[0011] The working principle of the present utility model is as follows:

[0012] A five-cylinder drilling pump housing proposed by the present utility model mainly provides an installation space for the power end of the five-cylinder drilling pump. The left main bearing seat and the right main bearing seat provide installation support points for the crankshaft. The connecting rod connects the crosshead in the crosshead cylinder sleeve installed on the crosshead cylinder sleeve seat with the crankshaft. The intermediate pull rod passes through the partition plate and is connected to the crosshead, and the intermediate pull rod is connected to the piston in the piston cylinder sleeve installed thereon, providing reciprocating motion for the five-cylinder drilling pump. A closed space is formed by the rear wall plate, the rear top plate, the partition plate, the oil sump bottom plate, and the rear support plate, providing an installation space and a lubrication space for structures such as the crankshaft, connecting rod, and crosshead; a closed space is formed by the front top plate, the front end plate, the front bottom plate, and the partition plate, providing an installation space and a piston cylinder sleeve cooling space for the piston, piston cylinder sleeve, and intermediate pull rod.

[0013] The beneficial effects of the present utility model are as follows:

[0014] (1) The utility model divides the front and rear cavities into five small cavities, and the overall support strength is significantly increased, which can effectively reduce the thickness of the wallboard, support plate, baffle plate, the diameter of the crankshaft, etc., and can greatly reduce the weight of the casing, thereby further reducing the weight of the whole machine. It is convenient to use in mine hoisting, and greatly reduces the transportation cost.

[0015] (2) The utility model is provided with a crosshead cylinder liner seat in the rear cavity for installing the crosshead cylinder liner. Different from the traditional crosshead guide plate, it has better centering performance, the crosshead runs more smoothly, greatly reduces the probability of crosshead eccentric wear, and improves the technical performance and economic benefits.

[0016] (3) The left wallboard, the main bearing seat support plate, and the right wallboard of the utility model are respectively provided with main bearing seats for supporting the crankshaft, which changes from the traditional two-point support to six-point support, so the support strength is higher.

[0017] (4) The front bottom plate of the utility model is set to be inclined, which is convenient for the timely discharge of the cylinder liner cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the utility model;

[0019] Figure 2 is the top view of the utility model;

[0020] In the figure: 1 - rear wallboard, 2 - rear top plate, 3, crosshead cylinder liner seat support plate, 4 - crosshead cylinder liner seat, 5 - front top plate, 6 - front end plate, 7 - front support plate, 8 - front bottom plate, 9 - baffle plate, 10 - oil sump bottom plate, 11 - rear support plate, 12 - left main bearing seat, 13 - right main bearing seat, 14 - main bearing seat support plate, 15 - right wallboard, 16 - front partition plate, 17 - left wallboard. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0021] The following further describes the utility model in detail with reference to the drawings.

[0022] Such as Figure 1-2A five-cylinder drilling pump housing as shown includes a rear wall plate 1 connected to a rear support plate 11. The top of the rear wall plate 1 is connected to a rear top plate 2. The left and right sides of the rear wall plate 1 and the rear top plate 2 are respectively connected to a left wall plate 17 and a right wall plate 15. The front ends of the left wall plate 17 and the right wall plate 15 are connected to a front end plate 6, and the front end plate 6 is located on a front support plate 7. The rear top plate 2 is connected to a front top plate 5, and the front top plate 5 is located on a partition plate 9. The partition plate 9 divides the housing into a front cavity and a rear cavity. The front cavity is a piston movement cavity and is divided into several groups of separate cavities by several front partition plates 16 for the piston to move. The front partition plates 16 are provided with communication ports to connect the cavities with each other and discharge the cooling water of the cylinder liner. The rear cavity is a crankshaft, connecting rod, and crosshead movement cavity. The bottom of the front cavity is provided with an inclined front bottom plate 8 which is connected to the partition plate 9 and the front end plate 6. The front bottom plate 8 is provided with a drain port for discharging the cooling water of the cylinder liner. The bottom of the rear cavity is provided with an oil sump bottom plate 10 which is connected to the rear support plate 11 and the partition plate 9. The oil sump bottom plate 10 is provided with an oil drain port for discharging the lubricating oil. At the same time, the rear cavity is divided into five separate cavities by four main bearing seat support plates 14. Each cavity is provided with a crosshead cylinder liner seat 4. The crosshead cylinder liner seat 4 is connected to the inner side of the left wall plate 17, the main bearing seat support plate 14, and the inner side of the right wall plate 15 that divide the cavity through two crosshead cylinder liner seat support plates 3 each on the upper and lower sides. A left main bearing seat 12 is provided on the left wall plate 17, a left main bearing seat 12 is provided on each of the main bearing seat support plates 14, and a right main bearing seat 13 is provided on the right wall plate 15. At the same time, the main bearing seat support plates 14 are provided with notches to connect the cavities with each other and discharge the lubricating oil.

[0023] The front cavity and the rear cavity are completely isolated by the partition plate 9 through sealing.

[0024] The working principle of the present utility model is as follows:

[0025] A five-cylinder drilling pump housing proposed by the present utility model mainly provides a power end installation space for the five-cylinder drilling pump. The left main bearing seat 12 and the right main bearing seat 13 provide installation support points for the crankshaft. The connecting rod connects the crosshead in the crosshead cylinder liner installed on the crosshead cylinder liner seat 4 with the crankshaft. The intermediate pull rod passes through the partition plate 9 and is connected to the crosshead. The intermediate pull rod is connected to the piston in the piston cylinder liner installed on 6, providing reciprocating motion for the five-cylinder drilling pump. A closed space is formed by the rear wall plate 1, the rear top plate 2, the partition plate 9, the oil sump bottom plate 10, and the rear support plate 11, providing an installation space and a lubrication space for structures such as the crankshaft, connecting rod, and crosshead. A closed space is formed by the front top plate 5, the front end plate 6, the front bottom plate 8, and the partition plate 9, providing an installation space and a piston cylinder liner cooling space for the piston, piston cylinder liner, and intermediate pull rod.

[0026] The utility model divides the front and rear cavities into five small cavities, and the overall support strength is significantly increased, which can effectively reduce the thickness of the wall panel, support plate, partition plate, crankshaft diameter, etc., and can greatly reduce the weight of the machine shell, thereby further reducing the weight of the whole machine. It is convenient to use for hoisting in the mine, and greatly reduces the transportation cost. The utility model is provided with a crosshead cylinder sleeve seat in the rear cavity for installing the crosshead cylinder sleeve. Different from the traditional crosshead guide plate, it has better centering, the crosshead runs more smoothly, greatly reduces the probability of crosshead eccentric wear, and improves the technical performance and economic benefits.

[0027] The above are only the preferred examples of the utility model. It should be pointed out that for those of ordinary skill in the art, under the technical inspiration provided by the utility model, as the common knowledge in the mechanical field, other equivalent variations and improvements can also be made, which should also be regarded as the protection scope of the utility model.

Claims

1. A five-cylinder drilling pump casing, characterized in that: The invention comprises a rear wall panel (1) connected to a rear support panel (11), wherein the top of the rear wall panel (1) is connected to a rear top panel (2), and the left and right sides of the rear wall panel (1) and the rear top panel (2) are respectively connected to a left wall panel (17) and a right wall panel (15), and the front ends of the left wall panel (17) and the right wall panel (15) are connected to a front end panel (6), and the front end panel (6) is located on a front support panel (7); the rear top panel (2) is connected to a front top panel (5), and the front top panel (5) is located on a partition panel (9), and the partition panel (9) divides the casing into a front end cavity and a rear end cavity, the front end cavity is a piston movement cavity and is divided into an array of separate cavities for piston movement by a plurality of front partition panels (16), and the rear end cavity is a crankshaft, connecting rod, and crosshead movement cavity; the bottom of the front end cavity is provided with an inclined The front bottom plate (8) is connected to the partition plate (9) and the front end plate (6); the bottom of the rear end cavity is provided with an oil pool bottom plate (10) connected to the rear support plate (11) and the partition plate (9); at the same time, the rear end cavity is divided into five separate cavities by four main bearing seat support plates (14), each cavity is provided with a crosshead cylinder seat (4), and the crosshead cylinder seat (4) is connected to the inner side of the left wall plate (17) of the partition cavity, the main bearing seat support plate (14), and the inner side of the right wall plate (15) through two upper and lower crosshead cylinder seat support plates (3); the left wall plate (17) is provided with a left main bearing seat (12), the main bearing seat support plates (14) are each provided with a left main bearing seat (12), and the right wall plate (15) is provided with a right main bearing seat (13).

2. A five-cylinder drilling pump casing according to claim 1, characterized in that: The front bottom plate (8) is provided with a drain port for draining cylinder liner cooling water.

3. A five-cylinder drilling pump casing according to claim 1 or 2, characterized in that: The front partition plate (16) is provided with a connecting port to interconnect the cavities and discharge the cylinder liner cooling water, and the main bearing seat support plate (14) is provided with a notch to interconnect the cavities and discharge the lubricating oil.

4. A five-cylinder drilling pump casing according to claim 3, characterized in that: The oil pool bottom plate (10) is provided with an oil drain port for draining the lubricating oil.

5. A five-cylinder drilling pump casing according to claim 4, characterized in that: The front end cavity and the rear end cavity are completely isolated from each other by sealing via a partition plate (9).

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