Horizontal directional drilling liquid outlet test device and test bed

Abstract

The utility model relates to a horizontal directional drilling liquid outlet test device and a test bed. The test device comprises a liquid inlet connector connected with a drill rod of a horizontal directional drilling machine, a liquid outlet connector connected with a transmission shaft of the test bed, and a liquid outlet sleeve arranged on the outer circle of the liquid outlet connector in a sleeving mode. The liquid inlet connector and the liquid outlet connector are in transmission connection through a universal coupling, and an inner cavity of the liquid inlet connector is communicated with an inner cavity of the liquid outlet connector through a hose; an inner cavity of the liquid inlet connector is communicated with a water path of a central hole of the drill rod; the liquid outlet sleeve is provided with a long hose for communicating the inner cavity of the liquid outlet connector with an external test liquid box; the test bench is provided with the test device. The horizontal directional drill is simple in testing operation process, low in testing cost, environmentally friendly, large in testing range and high in testing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering equipment testing, in particular to a horizontal directional drilling fluid inlet and outlet test device and a horizontal directional drilling test bench. Background Art

[0002] Horizontal directional drilling rig is a kind of construction machinery that lays various underground public facilities without excavating the surface of the ground. It is widely used in the laying of pipelines for water supply, electricity, telecommunications, natural gas, coal gas, oil, etc. It is suitable for various ground conditions such as sand, clay, pebbles, etc., and can be constructed in most non-hard rock areas in my country. When the drilling rig is working, the engine provides power for the drilling rig, drives the rotating drill rod, drives the drill bit forward, and the mud motor continuously inputs mud into the hollow drill rod through the mud input rotary joint. The mud is ejected from the drill bit. The mud plays a role in lubrication of the drilling process and hole forming and wall protection during construction. Therefore, when testing the horizontal directional drilling rig, it is necessary to simulate the actual working conditions through a dedicated test bench based on the working characteristics of the horizontal directional drill, and test the performance indicators of the horizontal directional drill.

[0003] The transmission shaft of the test bench is connected with a rotating torque loading device, a push-pull force loading device and other mechanisms, and the torque and pull pressure of the transmission shaft are monitored in real time through a torque meter and a pull-pressure sensor. When testing horizontal directional drilling, since the existing test bench cannot test the performance of the mud system, in order to avoid the mud input rotary joint from dry friction due to the lack of mud lubrication and cooling, which reduces its life, it is necessary to remove the rotary joint first, and then connect the drill rod of the horizontal directional drilling rig to be tested to the transmission shaft of the test bench, and then test the output torque of the drilling rig and the force of the drill rod.

[0004] Since the horizontal directional drilling rig needs to extract mud through the mud motor of the drilling rig during actual operation, and inject it into the center hole of the drill pipe through the mud input rotary joint of the drilling rig mainframe, and then spray it out from the drill bit of the drill pipe head, and the existing test bench cannot perform corresponding mud system tests, it is also necessary to test the mud system of the horizontal directional drilling rig separately. On the one hand, the mud system of the horizontal directional drilling rig is tested, and on the other hand, the mud input rotary joint components of the mainframe are lubricated and dissipated to prevent dry friction from causing a decrease in life. During the test, the original removed rotary joint needs to be installed back to the mainframe (or the mud system test is performed before the test bench test). Mud test liquid or water needs to be passed into the test drill pipe to block the drill pipe head and test the plugging pressure of the mud, but the changing flow pressure of the mud cannot be tested. The test operation is complicated, with many steps and low efficiency. In addition, when the drill pipe rotates and swings at an angle, it is difficult to effectively recover the mud test liquid, resulting in a large amount of energy waste, which does not meet the requirements of energy saving and green environmental protection.

[0005] In summary, the existing horizontal directional drilling rig test bench test and mud system test can only be carried out separately and independently, resulting in many steps in the horizontal directional drilling rig test, complicated operation, and low test efficiency; when the existing horizontal directional drilling rig test bench performs power testing, in order to avoid the horizontal directional drilling rig's rotary joint from reducing its life due to dry friction, the rotary joint needs to be disassembled and assembled, the operation steps are cumbersome, and the test efficiency is low; the existing mud system test has limited test parameters, and it is difficult to effectively recycle the mud test fluid, which increases the test cost and does not meet the requirements of energy saving and consumption reduction and green environmental protection. Therefore, the industry is in urgent need of a new horizontal directional drilling test system that can solve the above technical problems. Summary of the invention

[0006] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a horizontal directional drilling fluid inlet and outlet test device and a test bench. The fluid inlet and outlet test device is installed on the test bench to make the mud test parameters more comprehensive and more in line with the actual working conditions. At the same time, the mud test fluid can be effectively recovered and recycled, thereby reducing the test cost and meeting the requirements of energy saving and consumption reduction and green environmental protection. The mud test and the test bench test are integrated to reduce the operating steps of the horizontal directional drilling test and improve the test efficiency.

[0007] The purpose of the utility model is achieved in this way:

[0008] A horizontal directional drilling liquid inlet and outlet test device, comprising a liquid inlet connector connected to a drill rod of a horizontal directional drilling machine, a liquid outlet connector connected to a transmission shaft of a test bench, and a liquid outlet sleeve sleeved on the outer circumference of the liquid outlet connector; the liquid inlet connector and the liquid outlet connector are connected by a universal coupling, and the inner cavities of the liquid inlet connector and the liquid outlet connector are connected by a hose; the inner cavity of the liquid inlet connector is connected to a water channel of a center hole of the drill rod; a long hose is provided on the liquid outlet sleeve to connect the inner cavity of the liquid outlet connector with an external test liquid tank;

[0009] During the test, the mud motor of the horizontal directional drilling rig sucks the mud test fluid from the test fluid tank into the drill pipe, then enters the inner cavity of the liquid inlet connector from the drill pipe, enters the inner cavity of the liquid outlet connector through the hose, and then enters the long hose through the liquid outlet sleeve and flows back to the test fluid tank, forming a closed circulation loop.

[0010] Furthermore, a transition joint is embedded inside the liquid inlet connector, and the two are connected by synchronous rotation through a locking mechanism; an annular groove chamber is provided on the inner wall of the liquid inlet connector, which is connected to the hose through a through hole on the side wall of the liquid inlet connector; the transition joint is connected to the drill rod through a threaded connection, and a water channel connecting the center hole of the drill rod and the annular groove chamber of the liquid inlet connector is provided in the transition joint.

[0011] Furthermore, the transition joint is connected to the drill pipe via a tapered thread or an API thread.

[0012] Furthermore, the liquid outlet connecting body is sleeved on the transmission shaft, and the two are connected by synchronous rotation through a locking mechanism; the inner wall of the liquid outlet sleeve is provided with an annular groove chamber, which is connected with the long hose through a through hole on the side wall of the liquid outlet sleeve; the liquid outlet connecting body is provided with a water channel connecting the annular groove chamber of the liquid outlet sleeve and the hose.

[0013] Furthermore, the locking mechanism includes a pin shaft for connecting and a cotter pin inserted into a through hole at the end of the pin shaft to prevent the pin shaft from falling off.

[0014] Furthermore, the annular groove chamber is sealed by an annular sealing ring to prevent leakage of the test liquid.

[0015] Furthermore, the hose is connected to a stop valve.

[0016] Furthermore, the stop valve is a manual valve or an automatic valve; the automatic valve integrates an offline power supply module for adjusting the opening and closing degree of the automatic valve.

[0017] Furthermore, the universal coupling is a cross-axis or ball cage structure, and the outer ends of the two transmission side shafts are respectively connected to the liquid inlet connector and the liquid outlet connector through flanges.

[0018] Furthermore, the transmission shaft is rotatably arranged in a bearing seat of the test bench; a sleeve bracket is installed on the bearing seat; and the liquid outlet sleeve is installed on the sleeve bracket.

[0019] A horizontal directional drilling test bench is provided with any of the above-mentioned horizontal directional drilling fluid inlet and outlet test devices, and has the function of simultaneously performing power system tests and mud system tests on a horizontal directional drilling rig.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model discloses a horizontal directional drilling fluid inlet and outlet test device, wherein a fluid inlet connector and a fluid outlet connector connected by a universal coupling are arranged between a drill pipe of a horizontal directional drilling machine and a transmission shaft of a test bench. At the same time, the fluid inlet connector guides the mud test fluid in the center hole of the drill pipe to the fluid outlet connector through a hose, and the fluid is guided out and recovered by a fluid outlet sleeve, thereby realizing a closed cycle, achieving the purpose of recycling and reusing the mud test fluid and testing the dynamic pressure of the mud system, simplifying the test operation steps of the mud system, expanding the test range of the mud system, improving the test efficiency, reducing the test cost, and meeting the requirements of energy saving, consumption reduction and green environmental protection.

[0022] The horizontal directional drilling test bench of the utility model has the function of simultaneously online testing the power parameters and mud system of the horizontal directional drilling rig by installing the above-mentioned horizontal directional drilling fluid inlet and outlet test device. There is no need to separately test the power parameter test and the mud system test, which simplifies the test steps and greatly improves the test efficiency. There is no need to disassemble and assemble the rotary joint during the power parameter test, which simplifies the operation and improves the efficiency. The mud system test can test the dynamic pressure of the mud, and the test range is more comprehensive. The mud test fluid can be recycled and reused, which meets the requirements of energy saving and environmental protection and reduces the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a structural schematic diagram of a horizontal directional drilling fluid inlet and outlet test device.

[0024] Figure 2 The utility model is a cross-sectional view of a horizontal directional drilling fluid outlet test device.

[0025] in:

[0026] Drill pipe 1, transition joint 2, liquid inlet connector 3, hose 4, pin 5, flange 6, universal coupling 7, stop valve 8, annular sealing ring 9, long hose 10, liquid outlet sleeve 11, sleeve bracket 12, cotter pin 13, liquid outlet connector 14, transmission shaft 15, bearing seat 16. DETAILED DESCRIPTION

[0027] Example

[0028] See also Figure 1~2 The utility model relates to a horizontal directional drilling liquid inlet and outlet test device, comprising a liquid inlet connector 3 connected to a drill rod 1 of a horizontal directional drilling machine, a liquid outlet connector 14 connected to a transmission shaft 15 of a test bench, and a liquid outlet sleeve 11 sleeved on the outer circle of the liquid outlet connector 14; the transmission shaft 15 is rotatably arranged in a bearing seat 16 of the test bench; a sleeve bracket 12 is installed on the bearing seat 16 by bolts; the liquid outlet sleeve 11 is installed on the sleeve bracket 12 by bolts; the mounting bolt holes on the bearing seat 16 and the sleeve bracket 12 are both provided with adjustment gaps, so that the positions of the sleeve bracket 12 and the liquid outlet sleeve 11 can be adaptively adjusted, and a guide ring is also provided between the liquid outlet sleeve 11 and the liquid outlet connector 14 to prevent axial position offset between the two and rotational wear;

[0029] The liquid inlet connector 3 and the liquid outlet connector 14 are connected by a universal coupling 7, and the inner cavities of the liquid inlet connector 3 and the liquid outlet connector 14 are connected by a hose 4, and a stop valve 8 is installed at the interface between the hose 4 and the liquid outlet connector 14; the universal coupling 7 is a cross-axis or ball cage structure, and the outer ends of the two transmission side shafts are respectively connected to the liquid inlet connector 3 and the liquid outlet connector 14 through flanges 6; the inner cavity of the liquid inlet connector 3 is connected to the water channel of the center hole of the drill pipe 1; the liquid outlet sleeve 11 is provided with a long hose 10 to connect the inner cavity of the liquid outlet connector 14 with the external test liquid tank;

[0030] During the test, the main engine of the horizontal directional drill drives the drill pipe 1 to rotate, and then drives the liquid inlet connector 3, the universal coupling 7, the liquid outlet connector 14 and the transmission shaft 15 to rotate synchronously in turn; because the liquid outlet sleeve 11 is installed on the sleeve bracket 12 and connected to the long hose 10, the liquid outlet sleeve 11 is sleeved on the liquid outlet connector 14, but does not rotate with the rotation of the liquid outlet connector 14; the test bench performs torque loading, axial push and pull, axis deflection and other simulated working conditions on the transmission shaft 15, and monitors the output torque, speed, push and pull pressure range and other indicators of the horizontal directional drill through various sensors; among them, the universal coupling 7 can adapt to different angles of the drill pipe 1 screwed in, and can also compensate for the angular swing of the drill pipe 1 during the rotation process, effectively solving the problem of the drill pipe 1 and the transmission shaft 15 not being in the same axis during the test, and at the same time can avoid the transmission shaft 15 from being subjected to additional radial forces;

[0031] A transition joint 2 is embedded inside the liquid inlet connector 3, and the two are connected by synchronous rotation through a locking mechanism, and the locking mechanism includes a pin shaft 5 that locks the liquid inlet connector 3 and the transition joint 2, and a split pin 13 inserted in the through hole at the end of the pin shaft 5 to prevent the pin shaft 5 from falling off; an annular groove chamber is provided on the inner wall of the liquid inlet connector 3, which is connected to the hose 4 through a through hole on the side wall of the liquid inlet connector 3, and the annular groove chamber is sealed by an annular sealing ring 9 arranged between the liquid inlet connector 3 and the transition joint 2 to prevent leakage of the test liquid; the transition joint 2 is connected to the drill pipe 1 by a tapered thread or an API thread, and is tightened by rotating the drill pipe 1. Considering the need to test different types of horizontal directional drills, it is necessary to design a corresponding transition joint 2 for each type of drill pipe 1; a waterway is provided in the transition joint 2 to connect the center hole of the drill pipe 1 and the annular groove chamber of the liquid inlet connector 3;

[0032] API thread is one of the most commonly used thread types for drill pipe and drill bit. It is characterized by deep thread profile, round tenon, compact structure, and is suitable for occasions requiring high load-bearing capacity. In drilling operations, API thread is often used to connect drill pipe and drill bit, drill pipe and drill pipe. In this embodiment, it is used to connect transition joint 2 and drill pipe 1.

[0033] The liquid outlet connector 14 is sleeved on the transmission shaft 15, and the two are synchronously rotated and connected by a locking mechanism, and the locking mechanism includes a pin shaft 5 that locks the liquid outlet connector 14 and the transmission shaft 15, and a split pin 13 inserted in the through hole at the end of the pin shaft 5 to prevent the pin shaft 5 from falling off; the inner wall of the liquid outlet sleeve 11 is provided with an annular groove chamber, which is connected with the long hose 10 through the through hole on the side wall of the liquid outlet sleeve 11, and the annular groove chamber is sealed by an annular sealing ring 9 arranged between the liquid outlet connector 14 and the liquid outlet sleeve 11 to prevent leakage of the test liquid; the liquid outlet connector 14 is provided with a waterway connecting the annular groove chamber of the liquid outlet sleeve 11 and the hose 4;

[0034] During the test, the mud motor of the horizontal directional drilling rig sucks the mud test liquid from the test liquid tank into the center hole of the drill pipe 1, and then the mud test liquid enters the inner cavity of the liquid inlet connector 3 from the center hole of the drill pipe 1, enters the inner cavity of the liquid outlet connector 14 after passing through the hose 4 and the stop valve 8, and then enters the long hose 10 through the liquid outlet sleeve 11 and flows back to the test liquid tank, forming a closed circulation loop;

[0035] When the stop valve 8 is closed, the blocking pressure of the mud test liquid inside the drill pipe 1 can be measured, and the internal pressure sensor of the horizontal directional drilling rig can be used to check whether the mud test liquid pressure at this time meets the test requirements. In other embodiments, a pressure sensor can be installed on the hose 4 or the long hose 10 to monitor the mud test liquid pressure; when the stop valve 8 is opened, the flow pressure of the mud test liquid inside the drill pipe can be measured, and the internal pressure sensor of the horizontal directional drilling rig can be used to check whether the mud test liquid pressure at this time meets the test requirements; by adjusting the opening and closing degree of the stop valve 8, the dynamic flow pressure of the mud test liquid under actual working conditions can be simulated. Since the liquid outlet connector 14 needs to be in a static state when the manual valve is operated, the horizontal directional drilling needs to be started and stopped multiple times when testing multiple valve openings. Therefore, in order to further simplify the valve opening and closing operation of the stop valve 8, the manual valve can be replaced with an automatic valve integrating an offline power supply module and a wireless control module. When the liquid outlet connector 14 drives the valve body to rotate, the stop valve 8 can be opened and its valve opening can be controlled by a wireless signal, without the need to start and stop the horizontal directional drilling multiple times.

[0036] Since the drill rod 1 of the horizontal directional drilling rig has a certain amount of shaking when rotating, it is impossible to use the traditional water channel structure between the shaft and the sleeve to guide and recover the mud test liquid sprayed out of the center hole of the drill rod 1, and it is also impossible to monitor the dynamic working pressure of the mud in the horizontal directional drilling mud system. The horizontal directional drilling liquid inlet and outlet test device of this embodiment is provided with a liquid inlet connector 3 and a liquid outlet connector 14 connected by a universal coupling 7 between the drill rod 1 and the transmission shaft 15, and the unstable rotation of the drill rod 1 is converted to the stable rotation of the transmission shaft 15 through the universal coupling 7. At the same time, the mud test liquid in the center hole of the drill rod 1 is guided out of the liquid inlet connector 3 that follows the unstable rotation of the drill rod 1 through the hose 4 to the liquid outlet connector 14 that rotates stably, and is guided out and recovered by the non-rotating liquid outlet sleeve 11, realizing a closed cycle, and achieving the purpose of recycling and reusing the mud test liquid and testing the dynamic pressure of the mud system.

[0037] Example

[0038] The utility model relates to a horizontal directional drilling test bench, which is equipped with the horizontal directional drilling fluid inlet and outlet test device of the above embodiment. When the test bench performs a power loading simulation test on the horizontal directional drilling rig, the mud system of the horizontal directional drilling rig can be tested at the same time, and it has the function of simultaneously testing the power system test and the mud system test of the horizontal directional drilling rig. The test bench of this embodiment has the function of testing the power parameters and mud system of the horizontal directional drilling rig at the same time, and there is no need to test the power parameter test and the mud system test separately, which simplifies the test steps and greatly improves the test efficiency; there is no need to disassemble and assemble the rotary joint when testing the power parameters, which simplifies the operation and improves the efficiency; the mud system test can test the dynamic pressure of the mud, and the test range is more comprehensive. The mud test fluid can be recycled and reused, which meets the requirements of energy saving and environmental protection and reduces the test cost.

[0039] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A horizontal directional drilling fluid test device, characterized in that: The invention comprises a liquid inlet connector (3) connected to a drill rod (1) of a horizontal directional drilling machine, a liquid outlet connector (14) connected to a transmission shaft (15) of a test bench, and a liquid outlet sleeve (11) sleeved on the outer circle of the liquid outlet connector (14); the liquid inlet connector (3) and the liquid outlet connector (14) are transmission-connected via a universal coupling (7), and the inner cavities of the liquid inlet connector (3) and the liquid outlet connector (14) are connected via a hose (4); the inner cavity of the liquid inlet connector (3) is connected to the water channel of the center hole of the drill rod (1); and a long hose (10) is provided on the liquid outlet sleeve (11) to connect the inner cavity of the liquid outlet connector (14) to an external test liquid tank; During the test, the mud motor of the horizontal directional drilling rig sucks the mud test fluid from the test fluid tank into the drill pipe (1), then enters the inner cavity of the liquid inlet connector (3) from the drill pipe (1), enters the inner cavity of the liquid outlet connector (14) through the hose (4), and then enters the long hose (10) through the liquid outlet sleeve (11) before flowing back to the test fluid tank, forming a closed circulation loop.

2. The horizontal directional drilling fluid test device according to claim 1, characterized in that: A transition joint (2) is embedded in the liquid inlet connector (3), and the two are connected by synchronous rotation via a locking mechanism; an annular groove chamber is provided on the inner wall of the liquid inlet connector (3), and is connected to a hose (4) via a through hole on the side wall of the liquid inlet connector (3); the transition joint (2) is connected to the drill rod (1) via a threaded connection, and a water channel is provided in the transition joint (2) that connects the center hole of the drill rod (1) and the annular groove chamber of the liquid inlet connector (3).

3. The horizontal directional drilling fluid test device according to claim 2, characterized in that: The transition joint (2) is matched with the drill pipe (1) via a tapered thread or an API thread.

4. The horizontal directional drilling fluid test device according to claim 1, characterized in that: The liquid outlet connecting body (14) is sleeved on the transmission shaft (15), and the two are connected by synchronous rotation via a locking mechanism; the inner wall of the liquid outlet sleeve (11) is provided with an annular groove chamber, which is connected to the long hose (10) via a through hole on the side wall of the liquid outlet sleeve (11); and a water channel is provided in the liquid outlet connecting body (14) that connects the annular groove chamber of the liquid outlet sleeve (11) and the hose (4).

5. The horizontal directional drilling fluid discharge test device according to any one of claims 2 or 4, characterized in that: The locking mechanism comprises a pin shaft (5) having a connecting function, and a split pin (13) inserted into a through hole at the end of the pin shaft (5) to prevent the pin shaft (5) from falling off.

6. The horizontal directional drilling fluid discharge test device according to any one of claims 2 or 4, characterized in that: The annular groove chamber is sealed by an annular sealing ring (9) to prevent leakage of the test liquid.

7. The horizontal directional drilling fluid test device according to claim 1, characterized in that: The hose (4) is connected to a stop valve (8).

8. The horizontal directional drilling fluid inlet and outlet test device according to claim 7, characterized in that: The stop valve (8) is a manual valve or an automatic valve; the automatic valve is integrated with an offline power supply module for adjusting the opening and closing degree of the automatic valve.

9. The horizontal directional drilling fluid test device according to claim 1, characterized in that: The universal coupling (7) is a cross-axis type or ball cage type structure, and the outer ends of the two transmission side shafts are respectively connected to the liquid inlet connector (3) and the liquid outlet connector (14) through flanges (6).

10. The horizontal directional drilling fluid inlet and outlet test device according to claim 1, characterized in that: The transmission shaft (15) is rotatably arranged in a bearing seat (16) of the test bench; a sleeve bracket (12) is mounted on the bearing seat (16); and the liquid outlet sleeve (11) is mounted on the sleeve bracket (12).

11. A horizontal directional drilling test bench, characterized in that: The horizontal directional drilling fluid inlet and outlet test device is equipped with any one of claims 1 to 4 and 7 to 10, and has the function of simultaneously performing power system test and mud system test on the horizontal directional drilling rig.

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