Power management system and method for rotary drilling rig

Abstract

The invention discloses a power management system and method for a rotary drilling rig, and the system comprises an external power supply, an OBC module which is electrically connected with the external power supply, an integrated module which is electrically connected with the OBC module, and a PDU module which is electrically connected with the integrated module. The PDU module is electrically connected with a winch module through a first controller, electrically connected with a power head module through a second controller and electrically connected with a main pump module through a third controller, and the integration module is electrically connected with the winch module through the first controller, electrically connected with the power head module through the second controller and electrically connected with the main pump module through the third controller. The PDU module is connected with a range extender module, the range extender module is connected with an engine system, and the range extender module comprises a range extender and a range extender controller which are connected with each other; the range extender has multiple driving modes, each motor can be directly driven through power generation of the range extender module, each motor can also be directly driven by the power battery, and meanwhile, the power battery can be charged through an external power supply.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a power management system and method for a rotary drilling rig. Background Art

[0002] The power of traditional rotary drilling rigs comes from the engine driving the hydraulic main pump, which then distributes the hydraulic power and reaches the main winch and the hydraulic motor of the power head through the hydraulic pipeline for drive. With the implementation of my country's environmental protection policies, the new energy vehicle industry has rapidly emerged and iterated, and non-road engineering machinery also has the prospect and trend of developing towards new energy power.

[0003] In the prior art, the traditional driving method has many disadvantages. For example, the control mode is relatively single, and there is only one route for the engine to drive the hydraulic system. The engine needs to change the driving force at any time according to the working conditions, which will cause its power fluctuation to be large, the efficiency transmission loss to be high, and the output to be unstable, and the fuel consumption to be high. In addition to the energy loss of the mechanical connection itself, many hydraulic pipelines will also have flow resistance, which will have a certain impact on the work response and affect the work efficiency. In addition, there are many hydraulic pipeline interfaces and an external hydraulic oil tank, which has the risk of poor oil circuit sealing and low oil circuit cleanliness. At the same time, pollution and noise are also inevitable when the engine is running. In summary, there is an urgent need for a power management system and method for rotary drilling rigs that is fast in response, environmentally friendly, and efficient. Summary of the invention

[0004] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the present invention provides a power management system and method for a rotary drilling rig.

[0005] On the one hand, the power management system for a rotary drilling rig provided by the present invention comprises an external power supply, an OBC module electrically connected to the external power supply, an integrated module electrically connected to the OBC module, and a PDU module electrically connected to the integrated module, wherein the PDU module is electrically connected to a winch module through a first controller, to a power head module through a second controller, and to a main pump module through a third controller, wherein the integrated module is electrically connected to the winch module through the first controller, to the power head module through the second controller, and to the main pump module through the third controller, wherein:

[0006] The integrated module includes a BMS unit, a TMS unit, and a power battery unit; the hoisting module includes a hoisting motor and a hoisting motor connected to each other; the power head module includes a power head dual motor and a power head connected to each other; and the main pump module includes a main pump motor and a main pump connected to each other;

[0007] The main pump is hydraulically connected to the cylinder hydraulic system, the travel hydraulic system, and the rotary hydraulic system;

[0008] The PDU module is connected to a range extender module, the range extender module is connected to an engine system, and the range extender module includes a range extender and a range extender controller that are connected to each other.

[0009] As a specific implementation, the above-mentioned power management system for the rotary drilling rig also includes a vehicle thermal management module.

[0010] Furthermore, in the above-mentioned power management system for a rotary drilling rig, the first controller is a hoisting motor controller, and the hoisting motor controller can transmit control signals to the hoisting motor.

[0011] Furthermore, in the above-mentioned power management system for a rotary drilling rig, the second controller is a power head motor controller, and the power head motor controller can transmit control signals to the power head motor.

[0012] Furthermore, in the above-mentioned power management system for a rotary drilling rig, the third controller is a main pump motor controller, and the main pump motor controller can transmit control signals to the main pump motor.

[0013] The power management method for a rotary drilling rig provided by the present invention comprises:

[0014] Step 1: The engine system supplies power to the PDU module through the range extender module;

[0015] Step 2: The PDU module transmits electrical energy to the hoist module, the power head module, and the main pump module, so that the hoist module, the power head module, and the main pump module operate normally;

[0016] Step 3: The main pump drives the cylinder hydraulic system, the travel hydraulic system, and the rotary hydraulic system to operate normally.

[0017] As a specific implementation, in the above-mentioned power management method for a rotary drilling rig, when the load of the rotary drilling rig does not reach a specified value, the range extender module charges the power battery unit through the PDU module.

[0018] As a specific implementation, in the above-mentioned power management method for a rotary drilling rig, the power battery unit can supply power to the winch module, the power head module, and the main pump module through the BMS unit and the PDU module.

[0019] The power management system and method for a rotary drilling rig of the present invention have the following advantages and positive effects:

[0020] (1) Compared with the pure diesel power system of the same tonnage, the fuel economy of the present invention is stable, the fuel consumption is greatly reduced, and it has the characteristics of high efficiency and high stability. The main driven components, such as the winch, the power head, and the main pump, are driven by corresponding motors. These motors have the advantages of low speed and high torque, and high speed and constant power, so that the work response is fast, the operation is stable, and the efficiency is high;

[0021] (2) The present invention has multiple driving modes. The engine can be used to drive the range extender module to generate electricity and then directly drive each motor. When the load of the rotary drilling rig does not reach the specified value, the power battery can be charged. The power battery can also be used to directly drive the motor to work. At the same time, the power battery can also be connected to an external power supply through the OBC module for charging. In the power battery driving mode, the noise generated by the engine can be avoided and no exhaust pollution will be generated. When the present invention is fully fueled and fully charged, it can meet the requirements of 2.5 hours of pure electricity and 10 hours of pure oil relay work, providing guarantee for the long-term operation of the rotary drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 The present invention is a working principle diagram of a power management system and method for a rotary drilling rig.

[0024] Description of reference numerals:

[0025] 1-external power supply, 2-OBC module, 3-integrated module, 4-PDU module, 5-first controller, 6-second controller, 7-third controller, 8-winch module, 9-power head module, 10-main pump module, 11-range extender module, 12-engine system, 13-cylinder hydraulic system, 14-travel hydraulic system, 15-slewing hydraulic system. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, a power management system for a rotary drilling rig of the present invention comprises an external power supply 1, an OBC (on-board charger) module 2 electrically connected to the external power supply 1, an integrated module 3 electrically connected to the OBC module 2, and a PDU (high-voltage distribution box) module 4 electrically connected to the integrated module 3. The OBC module 2 can charge the integrated module 3 by being electrically connected to the external power supply 1. The PDU module 4 is electrically connected to a winch module 8 through a first controller 5, a power head module 9 through a second controller 6, and a main pump module 10 through a third controller 7. The OBC module 2 is also electrically connected to the power supply 1. The integrated module 3 and the PDU module can supply power to the hoisting module 8, the power head module 9, and the main pump module 10, so that the hoisting module 8, the power head module 9, and the main pump module 10 can operate normally. The integrated module 3 is electrically connected to the hoisting module 8 through the first controller 5, the power head module 9 through the second controller 6, and the main pump module 10 through the third controller 7. The integrated module 3 includes a BMS (battery control system) unit (not shown in the figure), a TMS (battery thermal management system) unit (not shown in the figure), and a power battery unit (not shown in the figure). Block 8 includes a winch motor (not shown in the figure) and a winch (not shown in the figure) connected to each other, and the winch motor drives the winch to work normally. The power head module 9 includes a power head dual motor (not shown in the figure) and a power head (not shown in the figure) connected to each other, and the power head dual motor drives the power head to work normally. The main pump module 10 includes a main pump motor (not shown in the figure) and a main pump (not shown in the figure) connected to each other; the main pump motor drives the main pump to work normally. The main winch motor, the power head dual motor, the main pump motor, etc. have the advantages of low speed and high torque, and high speed constant power, so that the work response is fast and the operation is fast. Stable and efficient, the main pump hydraulically connected to the cylinder hydraulic system 13, the travel hydraulic system 14, and the rotary hydraulic system 15, the main pump hydraulically drives the cylinder hydraulic system 13, the travel hydraulic system 14, and the rotary hydraulic system 15 to work normally; the PDU module 4 is connected to the range extender module 11, the range extender module 11 can supply power to the PDU module 4, the range extender module 11 is connected to the engine system 12, the range extender module 11 includes an interconnected range extender (not shown in the figure) and a range extender controller (not shown in the figure), the range extender controller can transmit control signals to the range extender.

[0028] As a specific implementation, the power management system for a rotary drilling rig of the present invention also includes a vehicle thermal management module. This configuration can control the temperature in the working environment to reach an appropriate specified temperature, thereby ensuring that each module and unit can operate normally.

[0029] Furthermore, in the power management system for a rotary drilling rig of the present invention, the first controller 5 is a hoisting motor controller, and the hoisting motor controller can transmit control signals to the hoisting motor.

[0030] Furthermore, in the power management system for a rotary drilling rig of the present invention, the second controller 6 is a power head motor controller, and the power head motor controller can transmit control signals to the power head motor.

[0031] Furthermore, in the power management system for the rotary drilling rig of the present invention, the third controller 7 is a main pump motor controller, and the main pump motor controller can transmit control signals to the main pump motor.

[0032] The power management method for a rotary drilling rig of the present invention is implemented using the above power management system, and specifically comprises the following steps:

[0033] Step 1: The engine system 12 supplies power to the PDU module 4 through the range extender module 11;

[0034] Step 2: The PDU module 4 transmits electric energy to the hoist module 8, the power head module 9, and the main pump module 10, so that the hoist module 8, the power head module 9, and the main pump module 10 operate normally;

[0035] Step 3: The main pump drives the cylinder hydraulic system 13, the travel hydraulic system 14, and the rotary hydraulic system 15 to operate normally.

[0036] As a specific implementation method, in the power management method for a rotary drilling rig of the present invention, when the load of the rotary drilling rig does not reach a specified value, the range extender module 11 charges the power battery unit through the PDU module 4. Such a configuration can enable electricity to be stored in the power battery unit when the working condition is relatively light, making it convenient to subsequently power the entire machine through the power battery unit, thereby greatly increasing the endurance of the entire vehicle.

[0037] As a specific implementation method, in the power management method for a rotary drilling rig of the present invention, the power battery unit can supply power to the winch module 8, the power head module 9, and the main pump module 10 through the BMS unit and the PDU module 4, so that the winch module 8, the power head module 9, and the main pump module 10 can operate normally and achieve zero emissions for the entire vehicle.

[0038] In summary, compared with the prior art, the power management system and method for a rotary drilling rig of the present invention has the following advantages and positive effects:

[0039] (1) Compared with the pure diesel power system of the same tonnage, the fuel economy of the present invention is stable, the fuel consumption is greatly reduced, and it has the characteristics of high efficiency and high stability. The main driven components, such as the winch, the power head, and the main pump, are driven by corresponding motors. These motors have the advantages of low speed and high torque, and high speed and constant power, so that the work response is fast, the operation is stable, and the efficiency is high;

[0040] (2) The present invention has multiple driving modes. The engine system 12 can be used to drive the range extender module 11 to generate electricity and then directly drive each motor. When the load of the rotary drilling rig does not reach the specified value, the power battery can be charged. The power battery can also be used to directly drive each motor to operate normally. At the same time, the power battery can also be connected to the external power supply 1 through the OBC module 2 for charging. In the power battery driving mode, the noise generated by the engine can be avoided and no exhaust pollution will be generated. When the present invention is fully fueled and fully charged, it can meet the requirements of 2.5 hours of pure electricity and 10 hours of pure oil relay operation, providing guarantee for the long-term operation of the rotary drilling rig.

[0041] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power management system for a rotary drilling rig, characterized in that: The invention comprises an external power supply, an OBC module electrically connected to the external power supply, an integrated module electrically connected to the OBC module, and a PDU module electrically connected to the integrated module. The PDU module is electrically connected to a hoisting module through a first controller, to a power head module through a second controller, and to a main pump module through a third controller. The integrated module is electrically connected to the hoisting module through the first controller, to the power head module through the second controller, and to the main pump module through the third controller, wherein: The integrated module includes a BMS unit, a TMS unit, and a power battery unit; the hoisting module includes a hoisting motor and a hoisting motor connected to each other; the power head module includes a power head dual motor and a power head connected to each other; and the main pump module includes a main pump motor and a main pump connected to each other; The main pump is hydraulically connected to the cylinder hydraulic system, the travel hydraulic system, and the rotary hydraulic system; The PDU module is connected to a range extender module, the range extender module is connected to an engine system, and the range extender module includes a range extender and a range extender controller that are connected to each other.

2. The power management system for a rotary drilling rig according to claim 1, characterized in that: It also includes the vehicle thermal management module.

3. The power management system for a rotary drilling rig according to claim 1, characterized in that: The first controller is a hoisting motor controller, and the hoisting motor controller can transmit control signals to the hoisting motor.

4. The power management system for a rotary drilling rig according to claim 1, characterized in that: The second controller is a power head motor controller, and the power head motor controller can transmit control signals to the power head motor.

5. The power management system for a rotary drilling rig according to claim 1, characterized in that: The third controller is a main pump motor controller, and the main pump motor controller can transmit control signals to the main pump motor.

6. A power management method for a rotary drilling rig, the power management method being implemented using a power management system according to any one of claims 1 to 5, comprising: Step 1: The engine system supplies power to the PDU module through the range extender module; Step 2: The PDU module transmits electrical energy to the hoist module, the power head module, and the main pump module, so that the hoist module, the power head module, and the main pump module operate normally; Step 3: The main pump drives the cylinder hydraulic system, the travel hydraulic system, and the rotary hydraulic system to operate normally.

7. The power management method for a rotary drilling rig according to claim 6, characterized in that: When the load of the rotary drilling rig does not reach a specified value, the range extender module charges the power battery unit through the PDU module.

8. The power management method for a rotary drilling rig according to claim 6, characterized in that: The power battery unit can supply power to the winch module, the power head module, and the main pump module through the BMS unit and the PDU module.

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