Pressure control system for drilling machine air compressor in high altitude area

Abstract

The utility model relates to a pressure control system for a drilling machine air compressor in a high altitude area. The pressure control system comprises the air compressor, an air storage tank and an engine. The air compressor is used for compressing a gas medium, the gas storage tank is used for storing the gas medium, and the engine is connected with the air compressor and drives the air compressor to rotate; the system further comprises a third main pipe, an unloading pipeline, a second working pipeline and a first working pipeline. Two ends of the third main pipe are connected with the output end of the air compressor and the input end of the air storage tank; the unloading pipeline is connected with the output end of the air compressor and used for exhausting air in the air compressor and reducing the load when the engine is started. The second working pipeline is used for providing a gas medium for the air compressor; the first working pipeline is used for opening the second working pipeline through starting gas pressurized by the air compressor. When the drilling machine is started in a high-altitude area, the air compressor exhausts residual gas through the unloading pipeline, the starting load of the engine is greatly reduced, and therefore the starting success rate of the engine is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling rig startup control, in particular to a pressure control system for a drilling rig air compressor in high-altitude areas. Background Art

[0002] At present, most of the drilling rigs on the market are used in plain areas or low-altitude areas, without much consideration of whether there will be abnormal factors when starting the engine. In high-altitude areas, due to factors such as low atmospheric pressure and low temperature, it is difficult to start the drilling rig in harsh environments, because the engine oil, compressor screw oil, and hydraulic oil of the drilling rig will become more viscous due to low temperature, making it difficult to start the engine and affecting the engine's working efficiency.

[0003] Authorization announcement number: CN203201643 U, application date: 2013.02.01, the name of the utility model is an integrated cooling system for a hydraulic integrated down-the-hole drilling rig, including an integrated cooling system and a control unit, wherein the integrated cooling system includes a cooling unit composed of an engine water cooling radiator, a hydraulic oil radiator, an air compressor screw lubricating oil radiator, a radiator sealing cover, a hydraulic oil pump group and a hydraulic oil tank, wherein the engine water cooling radiator, the hydraulic oil radiator and the air compressor screw lubricating oil radiator are integrated into one; the temperature of each system unit such as the engine, the air compressor and the hydraulic oil is always controlled within a certain range, thereby improving the overall thermal balance of the drilling rig and increasing the use range of the drilling rig in high temperature, high cold and high altitude areas, and having a good effect on improving fuel economy, extending the service life of the engine and the air compressor, improving the use efficiency and economic benefits of the drilling rig and improving the environmental adaptability of the drilling rig, and at the same time effectively saving the layout space of the drilling rig.

[0004] The above-mentioned prior art aims to integrate the engine water cooling radiator, hydraulic oil radiator and air compressor screw lubricating oil radiator into one, so as to always control the temperature of each system unit such as the engine, air compressor and hydraulic oil within a certain range, solve the heat dissipation problem of the three at the same time, improve the overall thermal balance of the drilling rig, and prevent the situation in which the engine and hydraulic oil temperatures are too low due to local excessive heat dissipation, resulting in the inability to be used in cold areas.

[0005] Therefore, the above-mentioned prior art solves how to ensure the thermal balance of the entire drilling rig, that is, how to stabilize the overall temperature of the drilling rig, thereby improving the stability of the drilling rig. The above-mentioned prior art does not provide any technical inspiration for the difficulty of starting the drilling rig engine due to low air pressure and temperature in high-altitude areas. Utility Model Content

[0006] The above-mentioned prior art solves the problem of how to ensure the thermal balance of the entire drilling rig, but does not provide any technical inspiration for the problem that the drilling rig engine is difficult to start due to being in a high altitude area. The purpose of the utility model is to provide, specifically, a pressure control system for an air compressor of a drilling rig in a high altitude area.

[0007] The technical solution provided by the utility model is:

[0008] A pressure control system for a drilling rig air compressor in high altitude areas, comprising:

[0009] Air compressor, which is used to compress gaseous media;

[0010] Gas storage tank, which is used to store gas medium;

[0011] An engine, which is connected to the air compressor and drives the air compressor to rotate;

[0012] Also includes:

[0013] A third main pipe, one end of which is connected to the output end of the air compressor, and the other end of which is connected to the input end of the air storage tank;

[0014] An unloading pipeline, which is connected to the output end of the air compressor and is used to discharge the gas in the air compressor to reduce the load when the engine is started;

[0015] A second working pipeline, which is used to provide gas medium to the air compressor;

[0016] A first working pipeline, which is used to provide starting gas to the air compressor, and the starting gas pressurized by the air compressor is used to open the second working pipeline;

[0017] Wherein, when the unloading pipeline is connected, the first working pipeline and the second working pipeline are both disconnected.

[0018] Furthermore, the second working pipeline includes a second air intake valve, the input end of the second air intake valve is connected to the first main pipe, and the output end of the second air intake valve is connected to the input end of the air compressor through the second main pipe; the second working pipeline is used to output the gas medium to the second output end of the gas storage tank.

[0019] Furthermore, the air intake valve is a pneumatic butterfly valve.

[0020] Furthermore, the first working pipeline includes a first branch pipe, two ends of the first branch pipe are respectively connected to the first main pipe and the second main pipe, and a first air intake valve is installed on the first branch pipe.

[0021] Furthermore, the first working pipeline also includes a second branch pipe, one end of the second branch pipe is connected to the first output end of the gas storage tank, and the other end is connected to the cylinder inlet of the second intake valve.

[0022] Furthermore, the first working pipeline also includes a fourth branch pipe, one end of the fourth branch pipe is connected to the second branch pipe, and the other end of the fourth branch pipe is connected to the input end of the air compressor.

[0023] Furthermore, a ball valve is installed on the fourth branch pipe.

[0024] Furthermore, the unloading pipeline includes a third branch pipe, the third branch pipe is connected to the second branch pipe, and an opening and closing mechanism is installed on the third branch pipe.

[0025] Furthermore, the opening and closing mechanism is an air release valve.

[0026] Furthermore, the pressure for opening the pneumatic butterfly valve is 100-150 KPa.

[0027] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0028] When the utility model starts the drilling rig in a high altitude area, the air compressor cannot take in air by closing the air intake valve, and the unloading pipeline allows the air compressor to discharge the residual gas, so that the engine greatly reduces the starting load, thereby improving the success rate of engine starting and extending the service life of the engine. After the engine is successfully started, the first working pipeline is connected to open the second air intake valve, and the air compressor starts to build pressure; after the second air intake valve is opened, the first air intake valve is closed, and the air compressor enters a normal working state.

[0029] In addition, a ball valve is provided between the output end of the gas storage tank and the input end of the air compressor, and the ball valve is used to shorten the pressure building time of the air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the connection mode of the air pressure control system of the drilling rig air compressor in the prior art;

[0031] Figure 2 This is a schematic diagram of an air compressor pressure control hydraulic system in one embodiment of the present application;

[0032] Figure 3 It is a schematic diagram of an electronic control system for air compressor pressure control in one embodiment of the present application.

[0033] Explanation of the symbols in the schematic diagram:

[0034] Air compressor 1, first main pipe 11, second main pipe 12, third main pipe 13; air storage tank 2, first output end 21, second output end 22; first air intake valve 3, first branch pipe 31, second branch pipe 32, third branch pipe 33, fourth branch pipe 34; second air intake valve 4, cylinder inlet 41; air relief valve 5; ball valve 6. DETAILED DESCRIPTION

[0035] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the drawings and embodiments.

[0036] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0037] In high altitude areas, due to factors such as low atmospheric pressure and low temperature, it is difficult for the drilling rig to start in harsh environments, because the engine oil, compressor screw oil, and hydraulic oil of the drilling rig will become more viscous due to the low temperature, making it difficult to start the engine and affecting the engine's working efficiency. An effective solution is to exhaust the gas in the air compressor to reduce the engine's starting load.

[0038] The present application discloses a pressure control system for a drilling rig air compressor in high altitude areas, comprising an air compressor 1 for compressing a gas medium, a gas storage tank 2 for storing the gas medium, and an engine. The engine is connected to the shaft of the air compressor 1, specifically by a coupling, and the rotation of the engine drives the air compressor 1 to rotate.

[0039] The drilling rig start-up control system includes three pipelines that work independently of each other, namely the unloading pipeline, the first working pipeline and the second working pipeline. The working relationship of these three pipelines is interrelated. Among them: when the unloading pipeline is connected, the first working pipeline and the second working pipeline are disconnected; when the unloading pipeline is disconnected, the first working pipeline is connected and the second working pipeline is disconnected; when the unloading pipeline and the first working pipeline are both disconnected, the second working pipeline is connected.

[0040] The unloading pipeline is connected to the output end of the air compressor 1 in order to discharge the residual gas in the air compressor 1, effectively reduce the engine starting load, and improve the engine starting success rate and service life.

[0041] After the engine is successfully started and reaches a normal speed, the unloading pipeline can be closed, and the air compressor 1 starts a pressure building process so that the air compressor 1 can reach a normal operating state later.

[0042] When the air compressor 1 starts to build pressure, the first air intake valve 3 is energized, that is, the first working pipeline is connected, and the starting gas can enter the air compressor through the first air intake valve 3. The gas enters the cylinder inlet 41 of the second air intake valve 4 after being pressurized by the air compressor 1. When the gas pressure reaches 100-150KPa, the second air intake valve 4 reaches the starting pressure and is successfully opened, and the second working pipeline is connected.

[0043] Therefore, the first working pipeline is used to open the second working pipeline. After the second working pipeline is connected, it means that the pressure buildup of the air compressor 1 is completed, the first air inlet valve 3 can be powered off, and the first working pipeline is closed.

[0044] Specifically, the second working pipeline includes a second air intake valve 4, the input end of the second air intake valve 4 is connected to the first main pipe 11, and the output end is connected to the input end of the air compressor 1 through the second main pipe 12. When the second working pipeline is connected, the gas medium enters the air compressor 1 through the second air intake valve 4, enters the gas storage tank 2 after being pressurized by the air compressor 1, and finally the gas medium is output from the second output end 22 of the gas storage tank 2. The second air intake valve 4 is a pneumatic butterfly valve, and the pressure for opening the pneumatic butterfly valve is 100-150KPa.

[0045] The first working pipeline includes a first branch pipe 31, the two ends of which are respectively connected to the first main pipe 11 and the second main pipe 12, and the first intake valve 3 is installed on the first branch pipe 31. The first intake valve 3 is preferably a two-position two-way solenoid valve. The first working pipeline also includes a second branch pipe 32, one end of which is connected to the first output end 21 of the gas storage tank 2, and the other end is connected to the cylinder inlet 41 of the second intake valve 4.

[0046] After the engine is successfully started, the air compressor 1 starts the pressure building process, and the first working pipeline is the main pipeline for starting the pressure building process of the air compressor 1. After the first air inlet valve 3 is powered on, the first working pipeline is connected, and the gas medium enters the air compressor 1 through the first air inlet valve 3, and enters the gas storage tank 2 after being pressurized by the air compressor 1. The gas medium in the gas storage tank 2 is increasing, and the pressure is increasing. The gas medium flows out from the first output end 21 of the gas storage tank 2, and flows into the cylinder inlet 41 of the second air inlet valve 4 from the second branch pipe 32. After reaching the opening pressure of the second air inlet valve 4, the second air inlet valve 4 is successfully opened.

[0047] In order to speed up the pressure building process of the air compressor 1, the first working pipeline also includes a fourth branch pipe 34, one end of the fourth branch pipe 34 is connected to the second branch pipe 32, and the other end is connected to the input end of the air compressor 1, and a ball valve 6 is installed on the second branch pipe 32. After the first air inlet valve 3 is powered off, the gas medium can be passed into the air compressor 1 again through the second branch pipe 32 from the first output end 21 of the gas storage tank 2, and the air compressor 1 will pressurize it again, shortening the time for the gas medium pressure to increase, and thus shortening the opening time of the second air inlet valve 4.

[0048] The ball valve 6 is opened when the engine is ignited and is closed when the drilling rig finishes operation.

[0049] The unloading pipeline includes a third branch pipe 33, which is connected to the second branch pipe 32. An opening and closing mechanism is installed on the third branch pipe 33 to control the opening and closing of the unloading pipeline. The opening and closing mechanism is a relief valve 5, preferably a two-position two-way solenoid valve. When the relief valve 5 is powered on, the unloading pipeline is connected and the residual gas in the air compressor 1 is discharged; when the relief valve 5 is powered off, the unloading pipeline is disconnected and the gas medium cannot pass through the relief valve 5.

[0050] The reason why the second intake valve 4 is a pneumatic butterfly valve is that it does not require a throttle hole and will automatically open when a certain gas pressure is reached. When the pneumatic butterfly valve is closed, almost no gas medium can enter the air compressor 1. For other types of butterfly valves, the throttle hole on the butterfly valve can still allow air to enter the air compressor 1 when closed, and the gas can still enter the air compressor 1. It is impossible to effectively reduce the load of the engine, and there is still a risk of difficulty in starting the engine.

[0051] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A pressure control system for a drilling rig air compressor in high altitude areas, comprising: An air compressor (1), the air compressor (1) is used to compress a gas medium; A gas storage tank (2), the gas storage tank (2) is used to store gaseous medium; An engine, the engine being connected to the air compressor (1) and driving the air compressor (1) to rotate; It is characterized by further comprising: A third main pipe (13), one end of the third main pipe (13) is connected to the output end of the air compressor (1), and the other end is connected to the input end of the air storage tank (2); An unloading pipeline, which is connected to the output end of the air compressor (1) and is used to discharge the gas in the air compressor (1) to reduce the load when the engine is started; a second working pipeline, used for supplying gaseous medium to the air compressor (1); a first working pipeline, which is used to provide starting gas to the air compressor (1), and the starting gas pressurized by the air compressor (1) is used to open the second working pipeline; Wherein, when the unloading pipeline is connected, the first working pipeline and the second working pipeline are both disconnected.

2. The pressure control system for a high altitude drilling rig air compressor according to claim 1, characterized in that: The second working pipeline comprises a second air intake valve (4), the input end of the second air intake valve (4) is connected to the first main pipe (11), and the output end of the second air intake valve (4) is connected to the input end of the air compressor (1) via the second main pipe (12); the second working pipeline is used to output the gaseous medium to the second output end (22) of the gas storage tank (2).

3. The pressure control system for a high altitude drilling rig air compressor according to claim 2 is characterized in that: The air inlet valve (4) is a pneumatic butterfly valve.

4. The pressure control system for a high altitude drilling rig air compressor according to claim 2, characterized in that: The first working pipeline comprises a first branch pipe (31), the two ends of the first branch pipe (31) are respectively connected to a first main pipe (11) and a second main pipe (12), and a first intake valve (3) is installed on the first branch pipe (31).

5. The pressure control system for a high altitude drilling rig air compressor according to claim 4, characterized in that: The first working pipeline also includes a second branch pipe (32), one end of the second branch pipe (32) is connected to the first output end (21) of the gas storage tank (2), and the other end is connected to the cylinder inlet (41) of the second intake valve (4).

6. The pressure control system for a high altitude drilling rig air compressor according to claim 5, characterized in that: The first working pipeline also includes a fourth branch pipe (34), one end of the fourth branch pipe (34) is connected to the second branch pipe (32), and the other end is connected to the input end of the air compressor (1).

7. The pressure control system for a high altitude drilling rig air compressor according to claim 6, characterized in that: A ball valve (6) is also installed on the fourth branch pipe (34).

8. The pressure control system for a high altitude drilling rig air compressor according to claim 4, characterized in that: The unloading pipeline comprises a third branch pipe (33), the third branch pipe (33) is connected to the second branch pipe (32), and an opening and closing mechanism is installed on the third branch pipe (33).

9. The pressure control system for a high altitude drilling rig air compressor according to claim 8, characterized in that: The opening and closing mechanism is an air release valve (5).

10. The pressure control system for a high altitude drilling rig air compressor according to claim 3, characterized in that: The pressure for opening the pneumatic butterfly valve is 100-150 KPa.

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