Anti-backflow liquid cooling device and method for extended-range rotary drilling rig

Abstract

The invention discloses an anti-backflow liquid cooling device and method for an extended-range rotary drilling rig, the anti-backflow liquid cooling device comprises a radiator, a liquid storage tank arranged above the radiator, and a water supplementing pipe communicated between the liquid storage tank and the radiator, and the water supplementing pipe is communicated with the top of the radiator; the side face of the upper portion of the radiator is communicated with one end of a water return pipe, the side face of the lower portion of the radiator is communicated with one end of a water inlet pipe, the other end of the water return pipe is communicated with the power head motor, and the other end of the water inlet pipe is communicated with the power head motor. The water return pipe is higher than the water inlet pipe, a power unit is arranged on the water inlet pipe, an electromagnetic valve is arranged on the water return pipe, and the height of the electromagnetic valve in the vertical direction is lower than that of the liquid storage tank in the vertical direction; the liquid cooling device effectively solves the problem that the liquid storage tank overflows due to excessive backflow of cooling liquid caused by the height difference of the water return pipe at the power head motor when the whole vehicle is shut down, and is good in liquid cooling efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of extended-range rotary drilling rigs, and in particular relates to a backflow prevention liquid cooling device and method for an extended-range rotary drilling rig. Background Art

[0002] With the development of rotary drilling rigs towards new energy, their driving mode has also changed from traditional hydraulic motors to electric motors. Due to the particularity of the operating process of rotary drilling rigs, if the power head on the rotary drilling rig is driven by an electric motor, it will face some water cooling and heat dissipation problems. The heat dissipation system usually needs to meet the requirements that the liquid storage tank is connected to the atmosphere and is at a relatively high position, and the components that need to be cooled are at a relatively low position, so as to ensure that the entire cooling water path is always filled with coolant without carrying gas and affecting heat dissipation.

[0003] In the prior art, since the power head of the rotary drilling rig needs to move vertically back and forth on the mast, and its position is often much higher than the platform on which the radiator is installed, this means that the traditional heat dissipation layout will be broken and the liquid storage tank will become relatively low. Therefore, for the water circuit of the motor that needs water cooling and heat dissipation installed on the power head, when the water pump is not working, the coolant in the return pipe will flow to a lower place, and the pipe will be filled with gas, which will further affect the heat dissipation of the motor, and the coolant in the pipe will also flow into the radiator storage tank due to the height difference, thereby causing the problem of coolant overflow, which has a great safety hazard. In summary, there is an urgent need for an anti-reflux liquid cooling device and method that can prevent the coolant from flowing back and has a good liquid cooling effect. Summary of the invention

[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the present invention provides a backflow prevention liquid cooling device and method for an extended-range rotary drilling rig.

[0005] On the one hand, the present invention provides an anti-backflow liquid cooling device for an extended-range rotary drilling rig, wherein the anti-backflow liquid cooling device is arranged in the rotary drilling rig, a mast is arranged on one side of the rotary drilling rig, a power head motor is arranged on the mast, and the device comprises a radiator, a liquid storage tank arranged above the radiator, and a water supply pipe connected between the liquid storage tank and the radiator, wherein the water supply pipe is connected to the top of the radiator, and the vertical height of the liquid storage tank is lower than the vertical height of the power head motor, wherein:

[0006] The upper side of the radiator is connected to one end of a return pipe, and the lower side is connected to one end of a water inlet pipe. The other end of the return pipe is connected to the power head motor, and the other end of the water inlet pipe is connected to the power head motor. The return pipe and the water inlet pipe are connected to each other and the return pipe is higher than the water inlet pipe. A power unit is arranged on the water inlet pipe, and an electromagnetic valve is arranged on the return pipe. The vertical height of the electromagnetic valve is lower than the vertical height of the liquid storage tank.

[0007] As a specific implementation, in the above-mentioned anti-backflow liquid cooling device for the extended-range rotary drilling rig, the solenoid valve is a two-way solenoid water valve.

[0008] As a specific implementation, in the above-mentioned anti-backflow liquid cooling device for the extended-range rotary drilling rig, the power unit is an electric water pump.

[0009] On the other hand, the anti-backflow liquid cooling method for the extended-range rotary drilling rig provided by the present invention comprises:

[0010] Step 1: When the power head motor is working, start the radiator and the power unit, and adjust the electromagnetic valve to a connected state;

[0011] Step 2: The coolant in the liquid storage tank flows through the radiator and the water inlet pipe through the water supply pipe, and then flows to the power head motor through the water inlet pipe. After the liquid cooling heat is completed at the power head motor, the coolant flows into the radiator through the return pipe;

[0012] Step 3: When liquid cooling is not required, close the radiator and the water inlet pipe, adjust the electromagnetic valve to a closed state, and complete liquid cooling of the power head motor.

[0013] As a specific implementation, in the above-mentioned anti-backflow liquid cooling method for an extended-range rotary drilling rig, the coolant is cooling water.

[0014] As a specific implementation, in the above-mentioned anti-backflow liquid cooling method for an extended-range rotary drilling rig, when the solenoid valve is adjusted to a closed state, the coolant in the return pipe between the solenoid valve and the power unit stops flowing into the radiator.

[0015] The anti-backflow liquid cooling device and method for the extended-range rotary drilling rig of the present invention have the following advantages and positive effects:

[0016] The present invention has a simple structure and is easy to assemble and disassemble. By switching the electromagnetic valve to a closed state when the power of the whole vehicle is cut off, the problem of excessive backflow of coolant in the return pipe at the power head motor due to the height difference when the whole vehicle is stopped, which in turn causes overflow of the liquid storage tank, is effectively solved, thereby avoiding the safety hazard caused by overflow of the liquid storage tank. At the same time, the present invention can remain open when the whole vehicle is working, so that the heat dissipation route of the whole vehicle is unobstructed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 It is a structural schematic diagram of the anti-backflow liquid cooling device for the extended-range rotary drilling rig of the present invention.

[0019] Description of reference numerals:

[0020] 1-liquid storage tank, 2-water supply pipe, 3-radiator, 4-power unit, 5-electromagnetic valve, 6-water inlet pipe, 7-power head motor, 8-return pipe, 100-rotary drilling rig, 200-mast. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1As shown, on the one hand, the present invention discloses an anti-backflow liquid cooling device for an extended-range rotary drilling rig, the anti-backflow liquid cooling device is arranged in the rotary drilling rig 100, a mast 200 is arranged on one side of the rotary drilling rig 100, a power head motor 7 is arranged on the mast 200, the power head motor 7 can move up and down along the mast 200, the power head motor 7 provides power for the power head on the rotary drilling rig 100, the anti-backflow liquid cooling device includes a radiator 3, a liquid storage tank 1 arranged above the radiator 3, and a water supply pipe 2 connected between the liquid storage tank 1 and the radiator 3, one end of the water supply pipe 2 is connected to the top of the radiator 3, and the other end is connected to the bottom of the liquid storage tank 1, the liquid storage tank 1 stores coolant, and the coolant can be supplied by the water supply pipe 2. Tube 2 flows from the liquid storage tank 1 to the radiator 3. The vertical height of the liquid storage tank 1 is lower than the vertical height of the power head motor 7. Of course, the vertical height of the power head motor 7 is not fixed. Under most working conditions, the vertical height of the power head motor 7 is higher than the vertical height of the liquid storage tank 1. The upper side of the radiator 3 is connected to one end of the return pipe 8, and the lower side is connected to one end of the inlet pipe 6. The return pipe 8 and the inlet pipe 6 are opened on the same side of the radiator 3. The other end of the return pipe 8 is connected to the power head motor 7, and the other end of the inlet pipe 6 is connected to the power head motor 7. The return pipe 8 and the inlet pipe 6 are connected to each other and the return pipe 8 is higher than the inlet pipe 6. The power head motor 7 is provided with The return pipe 8 and the corresponding liquid cooling unit (not shown in the figure) of the water inlet pipe 6 flow into the liquid cooling unit through the coolant in the water inlet pipe 6, and then flow out from the liquid cooling unit to the return pipe 8. The coolant in the liquid cooling unit can take away a part of the temperature of the power head motor 7, so as to achieve the effect of liquid cooling. The water inlet pipe 6 is provided with a power unit 4, which provides power for the coolant so that the coolant can flow in a single direction, and the flow rate of the coolant can be controlled by adjusting the power unit 4, thereby controlling the efficiency of liquid cooling. The return pipe 8 is provided with an electromagnetic valve 5, and the electromagnetic valve 5 can be used to control the connection and closing of the return pipe 8 at the electromagnetic valve 5. The electromagnetic valve 5 is low in the vertical direction. At the height in the vertical direction of the liquid storage tank 1, it is arranged in this way that after the liquid cooling is completed, the electromagnetic valve 5 is closed, and the coolant in the return pipe 8 between the electromagnetic valve 5 and the liquid cooling unit cannot flow back into the liquid storage tank 1 due to the closure of the electromagnetic valve 5. The coolant in the return pipe 8 between the electromagnetic valve 5 and the radiator 3 cannot flow back into the liquid storage tank 1 because the liquid level is lower than the liquid level in the liquid storage tank 1. Therefore, the coolant is prevented from flowing back after the liquid cooling is completed, and the coolant in the return pipe 8 is prevented from flowing to a lower place, and the pipeline is filled with gas, which affects the heat dissipation of the motor. The problem of coolant overflow caused by the coolant in the return pipe 8 flowing into the liquid storage tank 1 due to the height difference is also solved.

[0023] As a specific implementation, in the anti-backflow liquid cooling device for the extended-range rotary drilling rig of the present invention, the solenoid valve 5 is a two-way solenoid water valve. When the solenoid valve 5 is in a closed state, the coolant in the return pipe 8 cannot pass through the solenoid valve 5. When it is in a connected state, the coolant in the return pipe 8 can pass through the solenoid valve 5. This is set because the two-way solenoid water valve has the characteristics of fast response and stable operation. It can be opened in time when the rotary drilling rig 100 is powered on, and closed in time when the power is off. Of course, the solenoid valve 5 can also use other types of liquid valves, as long as it can block the return pipe 8 when it is closed when the power is off.

[0024] As a specific implementation, in the anti-backflow liquid cooling device for the extended-range rotary drilling rig of the present invention, the power unit 4 is an electric water pump. Of course, the selection of the specific power unit 4 needs to be set according to the needs of actual use and is not limited here.

[0025] On the other hand, the anti-backflow liquid cooling method for the extended-range rotary drilling rig of the present invention is implemented using the above-mentioned anti-backflow liquid cooling device, and specifically includes the following steps:

[0026] Step 1: When the rotary drilling rig 100 is working, the power head is powered by the power head motor 7. When the power head motor 7 is working, the radiator 3 and the power unit 4 are started, and the electromagnetic valve 5 is adjusted to a connected state;

[0027] Step 2: The coolant in the liquid storage tank 1 flows through the radiator 3 and the water inlet pipe 6 through the water supply pipe 2, and then flows to the power head motor 7 through the water inlet pipe 6. After the liquid cooling unit at the power head motor 7 completes the liquid cooling and heat dissipation, the coolant flows to the radiator 3 through the return pipe 8, and then repeats the above cycle to achieve the purpose of liquid cooling and heat dissipation;

[0028] Step 3: When liquid cooling is not needed, the whole vehicle is powered off, which can be regarded as closing the radiator 3 and the water inlet pipe 6. Due to the power failure, the solenoid valve 5 is automatically adjusted to a closed state. At this time, the coolant in the return pipe 8 between the solenoid valve 5 and the liquid cooling unit cannot flow back to the liquid storage tank 1 due to the closure of the solenoid valve 5. The coolant in the return pipe 8 between the solenoid valve 5 and the radiator 3 cannot flow back to the liquid storage tank 1 because the liquid level is lower than the liquid level in the liquid storage tank 1, thereby completing the liquid cooling of the power head motor 7.

[0029] As a specific implementation, in the anti-backflow liquid cooling method for an extended-range rotary drilling rig of the present invention, the coolant is cooling water. Of course, the coolant may also be other solutions as long as it has a liquid cooling effect.

[0030] As a specific implementation, in the anti-backflow liquid cooling method for an extended-range rotary drilling rig of the present invention, when the solenoid valve 5 is adjusted to a closed state, the coolant in the return pipe 8 between the solenoid valve 5 and the power unit 4 stops flowing into the radiator 3.

[0031] In summary, compared with the prior art, the anti-backflow liquid cooling device and method for the extended-range rotary drilling rig of the present invention has the following advantages and positive effects:

[0032] The present invention has a simple structure and is easy to assemble and disassemble. By switching the electromagnetic valve 5 to a closed state when the whole vehicle is powered off, the problem of excessive backflow of coolant in the return pipe 8 at the power head motor 7 due to the height difference when the whole vehicle is stopped, which in turn causes overflow of the liquid storage tank 1, is effectively solved, thereby avoiding the safety hazard caused by overflow of the liquid storage tank 1. At the same time, the present invention can remain open when the whole vehicle is working, so that the heat dissipation route of the whole vehicle is unobstructed.

[0033] 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.

[0034] 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 backflow prevention liquid cooling device for an extended-range rotary drilling rig, wherein the backflow prevention liquid cooling device is arranged in the rotary drilling rig, a mast is arranged on one side of the rotary drilling rig, and a power head motor is arranged on the mast, wherein: It includes a radiator, a liquid storage tank disposed above the radiator, and a water supply pipe connected between the liquid storage tank and the radiator, wherein the water supply pipe is connected to the top of the radiator, and the vertical height of the liquid storage tank is lower than the vertical height of the power head motor, wherein: The upper side of the radiator is connected to one end of a return pipe, and the lower side is connected to one end of a water inlet pipe. The other end of the return pipe is connected to the power head motor, and the other end of the water inlet pipe is connected to the power head motor. The return pipe and the water inlet pipe are connected to each other and the return pipe is higher than the water inlet pipe. A power unit is arranged on the water inlet pipe, and an electromagnetic valve is arranged on the return pipe. The vertical height of the electromagnetic valve is lower than the vertical height of the liquid storage tank.

2. The anti-backflow liquid cooling device for the extended-range rotary drilling rig according to claim 1, characterized in that: The electromagnetic valve is a two-way electromagnetic water valve.

3. The anti-backflow liquid cooling device for the extended-range rotary drilling rig according to claim 1, characterized in that: The power unit is an electric water pump.

4. A backflow prevention liquid cooling method for an extended-range rotary drilling rig, the backflow prevention liquid cooling method being implemented using the backflow prevention liquid cooling device according to any one of claims 1 to 3, comprising: Step 1: When the power head motor is working, start the radiator and the power unit, and adjust the electromagnetic valve to a connected state; Step 2: The coolant in the liquid storage tank flows through the radiator and the water inlet pipe through the water supply pipe, and then flows to the power head motor through the water inlet pipe. After the liquid cooling heat is completed at the power head motor, the coolant flows into the radiator through the return pipe; Step 3: When liquid cooling is not required, close the radiator and the water inlet pipe, adjust the electromagnetic valve to a closed state, and complete liquid cooling of the power head motor.

5. The anti-backflow liquid cooling method for an extended-range rotary drilling rig according to claim 4, characterized in that: The coolant is cooling water.

6. The anti-backflow liquid cooling device for the extended-range rotary drilling rig according to claim 4, characterized in that: When the electromagnetic valve is adjusted to a closed state, the coolant in the water return pipe between the electromagnetic valve and the power unit stops flowing into the radiator.

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