Range-extending type rotary drilling rig and heat dissipation water path system and heat dissipation water path monitoring method thereof

Abstract

The invention discloses an extended-range rotary drilling rig and a heat dissipation waterway system and a heat dissipation waterway monitoring method.The heat dissipation waterway system comprises a radiator and a motor heat dissipation pipe communicated with the radiator, a first water inlet is formed in one end of the radiator, a first water outlet is formed in the other end of the radiator, and a second water inlet and a second water outlet are formed in the motor heat dissipation pipe; a first pipeline is arranged between the first water inlet and the second water outlet in a communicating mode, a second pipeline is arranged between the first water outlet and the second water inlet in a communicating mode, an electromagnetic water valve is arranged on the first pipeline in a communicating mode, and overflow valves are arranged at the two ends of the electromagnetic water valve in a parallel communicating mode through third pipelines. A pressure measuring connector is arranged on the first pipeline between the electromagnetic water valve and the second water outlet, a water pump is arranged on the second pipeline in a communicating mode, the range-extended rotary drilling rig is connected with a control module, and the control module is connected to the pressure measuring connector; the problem that in the prior art, failure of an electromagnetic water valve is difficult to judge in time is solved, and internal element damage caused by out-of-control water pressure is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of the heat dissipation system of a rotary drilling rig, and particularly relates to an extended-range rotary drilling rig, a heat dissipation water circuit system thereof and a heat dissipation water circuit monitoring method. Background Art

[0002] A rotary drilling rig is a construction machinery suitable for hole-forming operations in building foundation projects, and is widely used in foundation construction projects such as municipal construction, highway bridges, high-rise buildings, etc. By cooperating with different drilling tools, it is suitable for dry (short helix), or wet (rotary bucket) and rock stratum (core drill) hole-forming operations.

[0003] In some extended-range rotary drilling rigs, the power head usually uses a water-cooled motor for heat dissipation. To ensure water stoppage when the machine is stopped, an electromagnetic water valve is often equipped in the return water pipeline. However, when the electromagnetic water valve fails, even in the startup state, the water flow will be directly interrupted. Since the driver cannot immediately judge whether the electromagnetic water valve fails, if the machine continues to work, the water pipe pressure will continue to increase, which may cause damage to other internally connected components.

[0004] In the prior art, a single electromagnetic water valve is usually used in the heat dissipation water circuit, and there is no pressure measuring joint for pressure monitoring, so it does not have intuitive water pressure observability and has a single function. When the electromagnetic water valve fails, the water pump continues to work and cannot relieve pressure through overflow or other means. Once the water pressure exceeds the safety value of other components in the pipeline, it will cause component damage, thus making the heat dissipation function of the entire motor fail, and only shutdown maintenance can be carried out, which brings great inconvenience to construction. To sum up, there is an urgent need for an extended-range rotary drilling rig, a heat dissipation water circuit system thereof and a heat dissipation water circuit monitoring method. Summary of the Invention

[0005] To solve some or all of the technical problems existing in the above prior art, the invention provides an extended-range rotary drilling rig, a heat dissipation water circuit system thereof and a heat dissipation water circuit monitoring method.

[0006] On the one hand, the heat dissipation water circuit system for an extended-range rotary drilling rig provided by the invention includes a radiator and a motor heat dissipation pipe communicated with the radiator. One end of the radiator is provided with a first water inlet, and the other end is provided with a first water outlet. A second water inlet and a second water outlet are opened on the motor heat dissipation pipe. A first pipeline is communicated between the first water inlet and the second water outlet, and a second pipeline is communicated between the first water outlet and the second water inlet. An electromagnetic water valve is communicated on the first pipeline, an overflow valve is connected in parallel through a third pipeline at both ends of the electromagnetic water valve, a pressure measuring joint is arranged on the first pipeline between the electromagnetic water valve and the second water outlet, a water pump is communicated on the second pipeline, and the extended-range rotary drilling rig is connected with a control module, and the control module is connected to the pressure measuring joint.

[0007] As a specific implementation manner, in the above-mentioned heat dissipation water circuit system for an extended-range rotary drilling rig, a display unit connected to the control module is provided in the cab of the extended-range rotary drilling rig, and the display unit can display in real time the pressure value monitored by the pressure measurement joint.

[0008] As a specific implementation manner, in the above-mentioned heat dissipation water circuit system for an extended-range rotary drilling rig, an alarm unit is connected to the control module, and the alarm unit includes an indicator light and a buzzer.

[0009] As a specific implementation manner, in the above-mentioned heat dissipation water circuit system for an extended-range rotary drilling rig, the pressure measurement joint is connected with a sensor probe, and the sensor probe is arranged in the first pipeline.

[0010] The heat dissipation water circuit monitoring method for an extended-range rotary drilling rig provided by the present invention includes:

[0011] Under normal working conditions: the electromagnetic water valve, the radiator, and the water pump are all in the starting state. The coolant in the motor cooling pipe flows into the first pipeline through the second water outlet, flows through the electromagnetic water valve and then into the first water inlet, and is cooled in the radiator. The coolant cooled by the radiator flows into the second pipeline through the first water outlet, flows through the water pump and then into the second water inlet. During this process, the pressure in each pipeline is monitored in real time through the pressure measurement joint to ensure that the pressure value is continuously within the safe range;

[0012] Under the failure condition of the electromagnetic water valve: when the electromagnetic water valve fails and closes due to a fault, since the water pump continues to operate, the water pressure in each pipeline increases. At this time, the sensor probe detects that the water pressure in each pipeline rises beyond the safe range. Then, the sensor probe transmits the pressure value signal to the control module. When the water pressure in each pipeline continues to rise to the preset value of the overflow valve over time, the overflow valve automatically opens, and the coolant flows through the third pipeline and inside the overflow valve.

[0013] As a specific implementation manner, in the above-mentioned heat dissipation water circuit method for an extended-range rotary drilling rig, the preset value is lower than the safety threshold of the lowest burst pressure element in each pipeline.

[0014] On the other hand, the present invention also provides an extended-range rotary drilling rig, and the extended-range rotary drilling rig includes the above-mentioned heat dissipation water circuit system.

[0015] The extended-range rotary drilling rig, its heat dissipation water circuit system and the heat dissipation water circuit monitoring method of the present invention have the following advantages and positive effects:

[0016] (1) By providing a high-precision pressure measuring joint in the first pipeline, the present invention can collect the water pressure data in the first pipeline in real time, and intuitively prompt the operation through the display unit and alarm unit set in the cab, solving the problem that it is difficult to immediately determine the failure of the electromagnetic water valve in the prior art, avoiding the damage of internal components caused by out-of-control water pressure, and having good practicability;

[0017] (2) In the present invention, a dual control mechanism is formed by parallel connection of an overflow valve and an electromagnetic water valve. When the electromagnetic water valve fails and the hydraulic pressure in the first pipeline reaches a preset value, the overflow valve automatically opens to relieve pressure, stabilizing the water pressure within a safe range, ensuring the continuous operation of the heat dissipation system, reducing the downtime of the extended-range rotary drilling rig caused by heat dissipation waterway failures, and improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0019] Figure 1 is a schematic diagram of the principle of the heat dissipation waterway system for an extended-range rotary drilling rig of the present invention.

[0020] Description of the reference numerals:

[0021] 1 - radiator, 11 - first water inlet, 12 - first water outlet, 2 - water pump, 3 - second pipeline, 4 - motor heat dissipation pipe, 41 - second water outlet, 42 - second water inlet, 5 - first pipeline, 6 - pressure measuring joint, 7 - electromagnetic water valve, 8 - overflow valve, 9 - third pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0023] As Figure 1 shown, the present invention provides an extended-range rotary drilling rig and its heat dissipation waterway system and heat dissipation waterway monitoring method.

[0024] On the one hand, the present invention discloses a heat dissipation water circuit system for an extended-range rotary drilling rig, which includes a radiator 1 and a motor heat dissipation pipe 4 connected to the radiator 1. The height of the motor heat dissipation pipe 4 is higher than that of the radiator 1. One end of the radiator 1 is provided with a first water inlet 11, and the other end is provided with a first water outlet 12. A second water inlet 42 and a second water outlet 41 are opened on the motor heat dissipation pipe 4. A first pipeline 5 is connected between the first water inlet 11 and the second water outlet 41, and a second pipeline 3 is connected between the first water outlet 12 and the second water inlet 42. An electromagnetic water valve 7 is connected to the first pipeline 5. When the electromagnetic water valve 7 is opened, the first pipeline 5 is in a connected state. When the electromagnetic water valve 7 is closed, the first pipeline 5 is in a closed state. An overflow valve 8 is connected in parallel to both ends of the electromagnetic water valve 7 through a third pipeline 9. The overflow valve 8 only opens when the liquid flow pressure at the inlet of the overflow valve 8 reaches a specified value. A pressure measuring joint 6 is provided on the first pipeline 5 between the electromagnetic water valve 7 and the second water outlet 41. The hydraulic pressure value in the first pipeline 5 can be detected through the pressure measuring joint 6. A water pump 2 is connected to the second pipeline 3. The coolant in each pipeline is driven to flow through the water pump 2. The extended-range rotary drilling rig is connected with a control module, and the control module is connected to the pressure measuring joint 6.

[0025] As a specific implementation manner, in the heat dissipation water circuit system for an extended-range rotary drilling rig of the present invention, a display unit connected to the control module is provided in the cab of the extended-range rotary drilling rig. The display unit can display in real time the pressure value monitored by the pressure measuring joint 6. During actual use, the pressure measuring joint 6 monitors the pressure value in the first pipeline 5, transmits the pressure value signal to the control module, and then the control module displays the pressure value in real time through the display unit. In this process, the pressure value is displayed in the form of a dynamic curve, which can enable the staff in the cab to more intuitively observe the hydraulic pressure in the heat dissipation water circuit system.

[0026] As a specific implementation manner, in the heat dissipation water circuit system for an extended-range rotary drilling rig of the present invention, the control module is connected with an alarm unit. The alarm unit includes an indicator light and a buzzer. When the heat dissipation water circuit system operates normally, the indicator light is in a green constant-on state and the buzzer does not work. When the control module monitors that the pressure value in the first pipeline 5 exceeds the set safety range, the control module controls the indicator light to be in a red flashing state and the buzzer to sound continuously. Through the alarm unit, the staff can be reminded to conduct fault troubleshooting and repair on the heat dissipation water circuit system.

[0027] As a specific implementation manner, in the heat dissipation water circuit system for an extended-range rotary drilling rig of the present invention, the pressure measuring joint 6 is connected with a sensor probe. The sensor probe is arranged in the first pipeline 5. The pressure measuring joint 6 monitors the hydraulic pressure in the first pipeline 5 through the sensor probe, and thus the hydraulic pressure values in the second pipeline 3 and the third pipeline 9 can be understood.

[0028] The heat dissipation waterway monitoring method for the range extender rotary drilling rig of the present invention is implemented using the above heat dissipation waterway system, and specifically includes the following steps:

[0029] Under normal working conditions: The electromagnetic water valve 7, radiator 1, and water pump 2 are all in the starting state. Driven by the water pump 2, the coolant in the motor cooling pipe 4 flows into the first pipeline 5 through the second water outlet 41, flows through the electromagnetic water valve 7 and then into the first water inlet 11, is cooled in the radiator 1, and the coolant cooled by the radiator 1 flows into the second pipeline 3 through the first water outlet 12, flows through the water pump 2 and then into the second water inlet 42 to cool the motor cooling pipe 4. During this process, through the pressure measuring joint 6, the water pressure in each pipeline is monitored in real time to ensure that the pressure value remains within the safe range continuously;

[0030] Under the failure condition of the electromagnetic water valve 7: When the electromagnetic water valve 7 fails and closes due to a fault, since the water pump 2 continues to operate, the water pressure in each pipeline increases. At this time, the pressure measuring joint 6 detects that the water pressure in each pipeline has increased beyond the safe range. Then, the pressure measuring joint 6 transmits the pressure value signal to the control module, and the control module transmits different command signals to the alarm module and the display unit according to the pressure value signal. When the water pressure in each pipeline continues to increase to the preset value of the overflow valve 8 over time, the overflow valve 8 automatically opens, and the coolant flows through the third pipeline 9 and inside the overflow valve 8. Then, driven by the water pump 2, the coolant in the motor cooling pipe 4 flows into the first pipeline 5 through the second water outlet 41, and flows through the third pipeline 9 and the overflow valve 8 and then into the first water inlet 11.

[0031] As a specific implementation manner, in the heat dissipation waterway method for the range extender rotary drilling rig of the present invention, the preset value is lower than the safety threshold of the lowest burst pressure element in each pipeline. More specifically, the preset value can be 80% - 90% of the safety threshold of the lowest burst pressure element in each pipeline. Such a setting can avoid damage to internal components caused by out-of-control water pressure.

[0032] On the other hand, the present invention also provides a range extender rotary drilling rig, and the range extender rotary drilling rig includes the above heat dissipation waterway system.

[0033] In summary, compared with the prior art, the range extender rotary drilling rig and its heat dissipation waterway system and heat dissipation waterway monitoring method of the present invention have the following advantages and positive effects:

[0034] (1) By providing a high-precision pressure measuring joint 6 in the first pipeline 5, the present invention can collect the water pressure data in the first pipeline 5 in real time, and intuitively prompt the work through the display unit and the alarm unit set in the cab, solving the problem that it is difficult to immediately determine the failure of the electromagnetic water valve 7 in the prior art, and avoiding damage to internal components caused by out-of-control water pressure, and having good practicability;

[0035] (2) In the present invention, a dual control mechanism is formed by the parallel connection of an overflow valve 8 and an electromagnetic water valve 7. When the electromagnetic water valve 7 fails and the hydraulic pressure in the first pipeline 5 reaches a preset value, the overflow valve 8 automatically opens to relieve pressure, stabilizing the water pressure within a safe range, ensuring the continuous operation of the heat dissipation system, reducing the downtime of the extended-range rotary drilling rig caused by heat dissipation waterway failures, and improving the construction efficiency.

[0036] It should be noted that in this article, unless otherwise clearly specified and defined, 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 components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. In addition, in this article, "front", "rear", "left", "right", "upper", and "lower" are all referenced based on the placement state shown in the drawings.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat dissipation water system for an extended-range rotary drilling rig, characterized in that: It includes a radiator and a motor cooling pipe connected to the radiator, wherein a first water inlet is provided at one end of the radiator, and a first water outlet is provided at the other end, a second water inlet and a second water outlet are provided on the motor cooling pipe, a first pipeline is provided between the first water inlet and the second water outlet, a second pipeline is provided between the first water outlet and the second water inlet, an electromagnetic water valve is provided on the first pipeline, overflow valves are provided at both ends of the electromagnetic water valve in parallel through a third pipeline, a pressure measuring joint is provided on the first pipeline between the electromagnetic water valve and the second water outlet, a water pump is provided on the second pipeline, and the extended-range rotary drilling rig is connected to a control module, and the control module is connected to the pressure measuring joint.

2. The heat dissipation water circuit system for an extended-range rotary drilling rig according to claim 1, characterized in that: A display unit connected to the control module is provided in the cab of the extended-range rotary drilling rig, and the display unit can display the pressure value monitored by the pressure measuring joint in real time.

3. The heat dissipation water circuit system for an extended-range rotary drilling rig according to claim 1, characterized in that: The control module is connected to an alarm unit, which includes an indicator light and a buzzer.

4. The heat dissipation water circuit system for an extended-range rotary drilling rig according to claim 1, characterized in that: The pressure measuring joint is connected to a sensor probe, and the sensor probe is arranged in the first pipeline.

5. A method for monitoring a heat dissipation water circuit for an extended-range rotary drilling rig, the method for monitoring a heat dissipation water circuit being implemented using the heat dissipation water circuit system according to any one of claims 1 to 4, comprising: Under normal working conditions: the electromagnetic water valve, the radiator, and the water pump are all in the starting state, the coolant in the motor heat dissipation pipe flows into the first pipeline through the second water outlet, flows into the first water inlet after passing through the electromagnetic water valve, and is cooled in the radiator. The coolant cooled by the radiator flows into the second pipeline through the first water outlet, flows into the second water inlet after passing through the water pump. In this process, the water pressure in each pipeline is monitored in real time through the pressure measuring joint to ensure that the pressure value is continuously within a safe range; Under the failure condition of the electromagnetic water valve: when the electromagnetic water valve is closed due to a malfunction, the water pressure in each pipeline increases due to the continuous operation of the water pump. At this time, the pressure probe detects that the water pressure in each pipeline has increased beyond the safety range. Then the pressure probe transmits the pressure value signal to the control module. When the water pressure in each pipeline continues to increase to the preset value of the overflow valve over time, the overflow valve automatically opens, and the coolant flows through the third pipeline and the overflow valve.

6. The heat dissipation water channel monitoring method for an extended-range rotary drilling rig according to claim 5, characterized in that: The preset value is lower than the safety threshold of the lowest bursting pressure element in each pipeline.

7. An extended-range rotary drilling rig, characterized in that: The extended-range rotary drilling rig comprises the heat dissipation water circuit system described in any one of claims 1-4.

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