Automatic lubricating device for crown block of oil drilling rig

Abstract

The utility model relates to a kind of automatic lubricating device of crown block for petroleum drilling machine, power component, including an oil injection pump and multiple lubricating pumps;Oil circuit distribution component, including multiple oil setting barrels and multiple lubricating branches;Among them, the oil outlet of oil injection pump and the oil inlet of each oil setting barrel are selectively connected, to make the oil injection pump can supplement each oil setting barrel with grease, the oil outlet of multiple oil setting barrels and the oil inlet of multiple lubricating pumps are one-to-one correspondence to communicate, and the oil outlet of each lubricating pump is communicated multiple lubricating branches, and through multiple lubricating branches to the corresponding crown block lubrication point.It has beneficial effects that the automatic lubricating device of crown block for petroleum drilling machine, through lubricating pump extraction oil setting barrel inside grease, and through lubricating branch to pump grease to corresponding lubrication point, which not only significantly reduces the work intensity of worker, also greatly reduces the risk of worker high-altitude operation.

Description

Technical Field

[0001] This utility model relates to the field of lubrication technology for oil drilling and production machinery, and in particular to an automatic lubrication device for overhead cranes of oil drilling rigs. Background Technology

[0002] As a core component of the drilling rig hoisting system, the operating status of the drilling rig directly affects the safety and efficiency of the entire drilling operation. The rig system typically includes several key lubrication points such as the main pulley, fast-rope pulley, dead-rope pulley, and auxiliary pulleys. Each lubrication point has different requirements for lubrication cycle and oil injection volume due to variations in working conditions, load, and movement. However, currently, manual periodic oil injection is commonly used for lubrication and maintenance of the rig in domestic oil drilling sites, a method with numerous technical drawbacks.

[0003] In existing technology, operators need to climb to the overhead crane position, which is about 40-50 meters above the drilling platform, to lubricate each point one by one. This manual operation method is not only labor-intensive and inefficient, but also poses serious safety risks during high-altitude operations, and is extremely prone to causing falls from heights.

[0004] Therefore, there is an urgent need to provide an automatic lubrication device for overhead cranes of oil drilling rigs that is non-manual, has low labor intensity, and low safety risks. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides an automatic lubrication device for overhead cranes of oil drilling rigs, which solves the technical problems of high labor intensity and high safety risks caused by existing manual lubrication.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model embodiment provides an automatic lubrication device for an overhead crane used in oil drilling rigs, comprising:

[0010] The power unit includes an oil injection pump and multiple lubrication pumps;

[0011] The oil distribution assembly includes multiple oil tanks and multiple lubrication branches;

[0012] The oil outlet of the oil injection pump can be selectively connected to the oil inlet of each oil tank so that the oil injection pump can replenish grease to each oil tank. The oil outlets of multiple oil tanks are connected to the oil inlets of multiple lubrication pumps in a one-to-one correspondence. The oil outlet of each lubrication pump is connected to multiple lubrication branches and leads to the corresponding overhead crane lubrication point through multiple lubrication branches.

[0013] Optionally, the number of lubrication pumps is four, namely, an auxiliary pulley lubrication pump, a dead rope pulley lubrication pump, a main pulley lubrication pump, and a fast rope pulley lubrication pump;

[0014] The four lubrication pumps correspond to the auxiliary wheel lubrication point, dead rope wheel lubrication point, main pulley lubrication point, and fast rope wheel lubrication point of the overhead crane, respectively.

[0015] Optionally, each of the lubrication branches is also provided with a manual oil injection port at one end near the lubrication point.

[0016] Optionally, each of the multiple oil tanks is equipped with an oil injection valve at its inlet, and the outlet of the oil injection pump can be selectively connected to each oil injection valve.

[0017] Optionally, a pressure gauge may also be included;

[0018] The pressure gauge is installed on the lubrication branch of the overhead crane to display the internal pressure of the branch on-site.

[0019] Optionally, it also includes a PLC control box and a human-machine interface;

[0020] The PLC control box is electrically connected to the plurality of lubrication pumps, and the human-machine interface is communicatively connected to the PLC control box.

[0021] Optionally, it also includes multiple pressure sensors electrically connected to the PLC control box;

[0022] A pressure sensor is installed on each of the aforementioned lubrication branches to detect the pressure within the lubrication branch.

[0023] Optionally, it also includes multiple oil level sensors electrically connected to the PLC control box;

[0024] Each of the oil containers is equipped with an oil level sensor to detect the oil level inside the container.

[0025] Optionally, the oil distribution assembly and the lubrication pump are located at the overhead crane, while the human-machine interface and the PLC control box are located in the driller's cabin or on the drilling platform of the oil drilling rig.

[0026] (III) Beneficial Effects

[0027] The beneficial effects of this utility model are as follows: The automatic lubrication device for overhead cranes of oil drilling rigs of this utility model includes: a power component, including an oil injection pump and multiple lubrication pumps; an oil distribution component, including multiple oil tanks and multiple lubrication branches; wherein, the oil outlet of the oil injection pump is selectively connected to the oil inlet of each oil tank, so that the oil injection pump can replenish grease to each oil tank; the oil outlets of the multiple oil tanks are connected one-to-one with the oil inlets of the multiple lubrication pumps, and the oil outlets of each lubrication pump are connected to multiple lubrication branches, which lead to the corresponding overhead crane lubrication points. Compared with the existing manual lubrication method, it provides a non-manual automatic lubrication device for overhead cranes of oil drilling rigs, that is, by using lubrication pumps to extract grease from the oil tanks and pumping the grease to the corresponding lubrication points through lubrication branches, which not only significantly reduces the labor intensity of workers, but also greatly reduces the risks of workers working at heights. In addition, the automatic lubrication device for the overhead crane of the oil drilling rig adopts a modular structure design, which facilitates quick installation and daily maintenance, while being compatible with the mechanical structure of existing drilling overhead cranes, reducing modification costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the automatic lubrication device for overhead cranes of oil drilling rigs of this utility model;

[0029] Figure 2 This is a schematic diagram of Embodiment 2 of the automatic lubrication device for the overhead crane of the oil drilling rig of this utility model.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Lubrication pump; 2: Oil level sensor; 3: Oil tank; 4: Pressure sensor; 5: Pressure gauge; 6: Oil injection pump; 7: PLC control box; 8: Human-machine interface; 9: Power supply; 10: Oil injection valve; 11: Auxiliary wheel lubrication point; 12: Dead rope wheel lubrication point; 13: Main pulley lubrication point; 14: Fast rope wheel lubrication point. Detailed Implementation

[0032] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1:

[0034] Please refer to Figure 1 , Figure 1 A schematic diagram of the automatic lubrication device for the overhead crane of an oil drilling rig according to this embodiment is shown.

[0035] This utility model provides an automatic lubrication device for an overhead crane used in oil drilling rigs, including a power component, an oil distribution component, and a power supply.

[0036] The power unit includes an oil injection pump 6 and multiple lubrication pumps 1.

[0037] The oil distribution assembly includes multiple oil tanks 3 and multiple lubrication branches.

[0038] The oil pump 6 has its outlet selectively connected to the inlet of each oil tank 3, allowing it to replenish grease to the tanks. The outlets of the oil tanks 3 are connected one-to-one to the inlets of the lubrication pumps 1, and each lubrication pump 1's outlet connects to multiple lubrication branches, leading to the corresponding overhead crane lubrication points. The power supply 9 is electrically connected to each electrical component to supply power.

[0039] The automatic lubrication device for overhead cranes in oil drilling rigs of this invention has the following advantages:

[0040] First, it can draw grease from the oil drum through a lubrication pump and pump the grease to the corresponding lubrication points through the lubrication branch. This not only significantly reduces the workload of workers, but also greatly reduces the risk of workers working at heights.

[0041] Second, the oil pump 6 is a public oil pump. When the grease in a certain oil container 3 is about to run out, the operator can connect the oil outlet of the oil pump 6 to the oil inlet of the corresponding oil container 3 to replenish the grease to the oil container 3.

[0042] Third, the automatic lubrication device for the overhead crane of the oil drilling rig adopts a modular structure design, which facilitates quick installation and daily maintenance, while being compatible with the mechanical structure of existing drilling overhead cranes, thus reducing modification costs.

[0043] In this embodiment, there are four oil tanks 3: one for the auxiliary pulley, one for the dead rope pulley, one for the main pulley, and one for the fast rope pulley. There are also four lubrication pumps 1: one for the auxiliary pulley, one for the dead rope pulley, one for the main pulley, and one for the fast rope pulley. The four oil tanks 3 and the four lubrication pumps 1 correspond to the auxiliary pulley lubrication point 11, the dead rope pulley lubrication point 12, the main pulley lubrication point 13, and the fast rope pulley lubrication point 14 of the overhead crane, respectively. Of course, the number of oil tanks 3 and lubrication pumps 1 is not limited to four; there can be five, six, seven, or more.

[0044] Preferably, each lubrication branch is also equipped with a manual oil injection port (not shown in the figure) at one end near the lubrication point. It should be noted that the manual oil injection port is retained at the end of each lubrication branch, so that manual lubrication can be switched immediately when the automatic lubrication device of the overhead crane of the oil drilling rig is under maintenance or completely fails, ensuring uninterrupted lubrication. This perfectly matches the characteristic of drilling operations that "cannot be easily stopped".

[0045] In this embodiment, each of the oil inlets of multiple oil tanks 3 is equipped with an oil injection valve 10, and the oil outlet of the oil injection pump 6 is selectively connected to each oil injection valve 10 via an oil injection pipeline. It should be noted that the oil injection valve 10 is an on-off valve. When the oil injection pipeline of the oil injection pump 6 is connected to the oil injection valve 10, the on-off valve opens the oil inlet of the oil tank 3; when the oil injection pipeline of the oil injection pump 6 is disconnected from the oil injection valve 10, the on-off valve closes the oil inlet of the oil tank 3.

[0046] This embodiment also includes a pressure gauge 5. The pressure gauge 5 is installed on the lubrication branch at the overhead crane and is used to display the internal pressure of the branch on-site. It should be noted that the pressure gauge 5 is a mechanical pressure gauge. This mechanical pressure gauge displays the pressure by means of the elastic deformation of the sensitive element (Bourdon tube, diaphragm, bellows) inside the gauge, and then the conversion mechanism inside the gauge transmits the pressure deformation to the pointer, causing the pointer to rotate.

[0047] In this embodiment, the oil pump 6 is preferably an air pump, powered by air. It should be noted that in flammable and explosive environments, the pneumatic pump does not require electrical drive, avoiding the risk of explosion caused by electrical sparks, thus offering higher safety and simpler maintenance.

[0048] Example 2:

[0049] Please refer to Figure 2 , Figure 2 A schematic diagram of the automatic lubrication device for the overhead crane of an oil drilling rig according to this embodiment is shown.

[0050] The automatic lubrication device for the overhead crane of the oil drilling rig in this embodiment differs from that in Embodiment 1 in that it also includes a PLC control box 7 and a human-machine interface 8.

[0051] The PLC control box 7 is electrically connected to multiple lubrication pumps 1, and the human-machine interface 8 is communicatively connected to the PLC control box 7.

[0052] It should be noted that the PLC control box 7 and the human-machine interface 8 are already commercially available devices. The PLC control box 7 is used to control the start and stop of the lubrication pump 1, and the human-machine interface 8 transmits data with the PLC control box 7. It is equipped with a panel, buttons or a touch screen.

[0053] Furthermore, in this embodiment, the lubrication pump 1 is a metering plunger pump driven by a motor. The amount of oil output by the motor rotating a fixed number of times is pre-calibrated to achieve metered supply. Specifically, the PLC control box 7 can achieve metered output of lubricating grease by controlling the number of rotations of the motor of each lubrication pump 1.

[0054] In this embodiment, the oil distribution assembly and lubrication pump 1 are located at the overhead crane, and the human-machine interface 8 and PLC control box 7 are located in the driller's cabin or on the drill platform. This allows the operator to operate the human-machine interface 8 and PLC control box 7 from the driller's cabin or on the drill platform to control the start and stop of each lubrication pump 1.

[0055] Preferably, the automatic lubrication device for the overhead crane of the oil drilling rig in this embodiment also includes multiple pressure sensors 4 electrically connected to the PLC control box 7. One pressure sensor 4 is installed on each lubrication branch to detect the pressure within the lubrication branch. With this configuration, the pressure sensors 4 can transmit pressure signals to the PLC control box 7, allowing operators to observe the pressure values ​​of each lubrication branch from the driller's cabin or drilling platform via a human-machine interface 8. Pressure gauges 5 are installed at the overhead crane site, allowing operators to read the pressure values ​​of each lubrication branch on-site from the crane. Therefore, the pressure sensors 4 and pressure gauges 5 in this embodiment constitute redundant monitoring; even if the pressure sensors 4 completely fail, on-site personnel can still determine the pipeline pressure status using pressure gauges 5.

[0056] Furthermore, the automatic lubrication device for the overhead crane of the oil drilling rig in this embodiment also includes multiple oil level sensors 2 electrically connected to the PLC control box 7. Each oil tank 3 is equipped with an oil level sensor 2 to detect the oil level in the oil tank 3.

[0057] In this embodiment, the human-machine interface 8 is preferably a touch screen, located in an easily accessible position within the driller's cabin. The human-machine interface 8 is connected to the PLC control box 7 via a communication cable for data exchange.

[0058] The area around the oil drilling rig may leak flammable gases (such as methane) and is therefore an explosion-proof area. Therefore, in this embodiment, the lubrication pump 1, PLC control box 7, human-machine interface 8, pressure sensor 4, and oil level sensor 2 are preferably explosion-proof certified models to fundamentally eliminate ignition sources and meet the most stringent safety regulations for oil drilling sites.

[0059] Due to the harsh environment (high vibration, large temperature differences, explosion-proof requirements), high-risk location (tens of meters above the ground), and serious consequences of lubrication failure, oil drilling rig overhead cranes face far more stringent requirements for automatic lubrication devices than ordinary equipment. The automatic lubrication device for oil drilling rig overhead cranes provided in this embodiment is specifically designed for the aforementioned special working conditions and needs of oil drilling overhead cranes. Its main applicability is reflected in: First, it adopts multi-pump independent control and a high protection level design to adapt to the independent needs of multiple lubrication points on the overhead crane and the harsh environment. Second, it is equipped with redundant monitoring, greatly reducing the risks of personnel working at heights and meeting the high safety standards of drilling sites.

[0060] Example 3:

[0061] This embodiment provides another automatic lubrication device for overhead cranes of oil drilling rigs. Unlike embodiment 1, the human-machine interface 8 in this embodiment can be an authorized mobile terminal (such as an explosion-proof tablet computer or a smartphone) or any computer connected to the Internet.

[0062] The remaining parts that are the same as in Example 1 will not be repeated here.

[0063] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0065] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automatic lubrication device for an overhead crane used in an oil drilling rig, characterized in that, include: The power unit includes an oil injection pump (6) and multiple lubrication pumps (1); The oil distribution assembly includes multiple oil tanks (3) and multiple lubrication branches; The oil outlet of the oil pump (6) is selectively connected to the oil inlet of each oil tank (3) so that the oil pump (6) can replenish the oil tank (3) with grease. The oil outlets of multiple oil tanks (3) are connected to the oil inlets of multiple lubrication pumps (1) one by one, and the oil outlets of each lubrication pump (1) are connected to multiple lubrication branches and lead to the corresponding overhead crane lubrication points through multiple lubrication branches.

2. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 1, characterized in that: The number of the lubrication pumps (1) is four, namely, the auxiliary pulley lubrication pump, the dead rope pulley lubrication pump, the main pulley lubrication pump and the fast rope pulley lubrication pump; The four lubrication pumps (1) correspond to the auxiliary wheel lubrication point (11), dead rope wheel lubrication point (12), main pulley lubrication point (13) and fast rope wheel lubrication point (14) of the crane, respectively.

3. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 1, characterized in that: Each of the aforementioned lubrication branches is also equipped with a manual oil injection port at one end near the lubrication point.

4. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 1, characterized in that: Each of the multiple oil tanks (3) is equipped with an oil injection valve (10) at its oil inlet, and the oil outlet of the oil injection pump (6) is selectively connected to each oil injection valve (10).

5. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 1, characterized in that: It also includes pressure gauges (5); The pressure gauge (5) is installed on the lubrication branch of the overhead crane to display the internal pressure of the branch on site.

6. The automatic lubrication device for overhead cranes of oil drilling rigs as described in any one of claims 1-5, characterized in that: It also includes a PLC control box (7) and a human-machine interface (8); The PLC control box (7) is electrically connected to the plurality of lubrication pumps (1), and the human-machine interface (8) is communicatively connected to the PLC control box (7).

7. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 6, characterized in that: It also includes multiple pressure sensors (4) electrically connected to the PLC control box (7); A pressure sensor (4) is installed on each of the lubrication branches to detect the pressure in the lubrication branch.

8. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 6, characterized in that: It also includes multiple oil level sensors (2) electrically connected to the PLC control box (7); Each of the oil tanks (3) is equipped with an oil level sensor (2) to detect the oil level in the oil tank (3).

9. The automatic lubrication device for overhead cranes of oil drilling rigs as described in claim 6, characterized in that: The oil distribution assembly and the lubrication pump (1) are located at the overhead crane, and the human-machine interface (8) and the PLC control box (7) are located in the driller's room or on the drilling platform of the oil drilling rig.

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