Modularized permanent magnet frequency conversion five-cylinder drilling pump set

Abstract

The utility model discloses a modularized permanent magnet frequency conversion five-cylinder drilling pump set, and relates to the field of oilfield drilling construction operation equipment, in particular to the modularized permanent magnet frequency conversion five-cylinder drilling pump set, which comprises an electric control cabinet base, a drilling pump base and a filling pump base which are detachably connected, the electric control cabinet base is provided with a control system; the drilling pump base is provided with a drilling pump, a lubricating system and a water cooling system. The drilling pump comprises a motor used for driving the drilling pump. The filling pump base is provided with a filling system and a filling pump control cabinet, and the filling pump control cabinet is electrically connected with the filling system; the control system is electrically connected with the drilling pump, the lubricating system and the water cooling system, and has the advantages that the use amount of external cables is reduced, so that a pump set is easy to mount and dismount on site, and the misoperation risk is reduced; the size is small, the weight is light, and system integration is tighter; and the applicability is better, and the heat dissipation effect of the water cooling system in a high-temperature environment is better.

Description

Technical Field

[0001] The utility model relates to the field of oilfield drilling construction equipment, in particular to a modular permanent magnet variable frequency five-cylinder drilling pump group. Background Art

[0002] With the development of new drilling technologies such as deep wells / ultra-deep wells, high-pressure jet drilling, large-displacement horizontal wells, cluster wells, and offshore platforms, drilling pumps are required to develop in the direction of high power, large displacement, high pump pressure, high reliability, high efficiency, light weight, and integration. At present, the drilling pump unit and the VFD electric control room are separated, and the main motor of the drilling pump unit uses a separate fan for heat dissipation. This type of pump unit has the following main defects: First, the VFD electric control room occupies a large area, has a large volume, and has poor maneuverability. Each time it is moved, it needs to be disassembled and connected with cables; it is not convenient for rapid transportation and transfer; it is difficult to adapt to the increasingly high drilling process technology requirements; second, the VFD electric control room has a large workload for operation and maintenance, and the cost of use is high; third, the main motor uses a separate fan for heat dissipation, which is large in size and high in noise;

[0003] In response to this construction situation, oil service companies hope to design and manufacture a drilling pump unit with small footprint, light weight, high efficiency, low noise and good maneuverability to solve this production problem. Utility Model Content

[0004] The purpose of the invention of the utility model is to provide a modular permanent magnet variable frequency five-cylinder drilling pump group in response to the above-mentioned problems.

[0005] The technical solution adopted by the utility model is as follows: a modular permanent magnet frequency conversion five-cylinder drilling pump group, including: an electric control cabinet base, a drilling pump base and an irrigating pump base, the electric control cabinet base, the drilling pump base and the irrigating pump base are detachably connected;

[0006] The base of the electric control cabinet is equipped with a control system;

[0007] The drilling pump base is provided with a drilling pump, a lubrication system and a water cooling system, and the drilling pump includes a motor for driving the drilling pump;

[0008] The priming pump base is provided with a priming system and a priming pump control cabinet, and the priming pump control cabinet is electrically connected with the priming system;

[0009] The control system is electrically connected to the drilling pump, lubrication system and water cooling system.

[0010] Furthermore, the control system includes a motor control cabinet and a PLC control cabinet.

[0011] Furthermore, the lubrication system includes a lubrication oil pump, a lubrication pipeline and an air cooler. The lubrication oil pump is connected to the drilling pump friction pair and the air cooler through the lubrication pipeline to form a loop.

[0012] Furthermore, the lubrication system includes a temperature control switch and a bypass pipeline. The bypass pipeline and the air cooler are connected in parallel to the lubrication pipeline. The temperature control switch is arranged at the connection between the lubrication pipeline and the bypass pipeline.

[0013] Furthermore, a lubricating oil filter is provided on the lubricating pipeline at the oil outlet end of the lubricating oil pump.

[0014] Furthermore, the lubrication system includes a pressure sensor, an overflow pipe and an overflow valve. The pressure sensor is arranged in the lubrication pipeline and is electrically connected to the overflow valve. The overflow pipe is connected to the lubrication pipeline, and the overflow valve is arranged in the overflow pipe.

[0015] Furthermore, the water cooling system includes a water cooling pipeline and a water pump, and the water pump is connected to the motor and the air cooler through the water cooling pipeline to form a loop.

[0016] Furthermore, the water cooling pipeline is provided with a water cooling filter.

[0017] Furthermore, it includes a transmission gear, and the motor is arranged on the top of the drilling pump, and directly drives the drilling pump through the transmission gear.

[0018] Furthermore, the motor is provided with a motor junction box.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. The motor uses the water cooling system in the lubrication system for heat dissipation, and the main motor fan is eliminated, which reduces the size of the motor and the noise;

[0021] 2. The drilling pump unit is locally integrated with the MCC cabinet and PLC cabinet, eliminating the need for a VFD electric control room, reducing floor space, facilitating operation and maintenance, effectively reducing customer operating costs and transportation costs, and realizing the motorized pump function; at the same time, the simplified external electrical interface reduces the use of external cables, making the pump unit easy to install and disassemble on site, reducing the risk of misoperation;

[0022] 3. Small size and light weight, suitable for installation in land pump rooms, offshore drilling platforms, transport trailers, and can be used for helicopter hoisting;

[0023] 4. The lubrication cooling system automatically adjusts the oil temperature to adapt to various high and low temperature working environments, and is equipped with lubricating oil and water cooling systems to cool the lubricating oil and main motor respectively. The water cooling system cools the main motor alone; the system integration is tighter; the applicability is also better, and the water cooling system has better heat dissipation effect in high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the structural diagram of the drilling pump group of the utility model.

[0025] Figure 2 This is a top view of the utility model drilling pump group.

[0026] Figure 3 This is the structural diagram of the lubrication system of the utility model.

[0027] Figure 4 This is a side view of the lubrication system of the utility model.

[0028] Figure 5 This is the structural diagram of the water cooling system of the utility model.

[0029] Figure 6 It is a side view of the water cooling system of the utility model.

[0030] Markings in the figure: 1-control system, 2-drilling pump, 3-lubrication system, 4-water cooling system, 5-main motor, 6-injection system, 7-injection pump control cabinet, 8-motor control cabinet, 9-PLC control cabinet, 10-lubricating oil pump, 11-lubricating pipeline, 12-air cooler, 13-temperature control switch, 14-bypass pipeline, 15-lubricating oil filter, 16-overflow pipe, 17-overflow valve, 18-water cooling pipeline, 19-water pump, 20-water cooling filter, 21-lubricating oil outlet pipeline of air cooler, 22-water cooling medium outlet pipeline of air cooler. DETAILED DESCRIPTION

[0031] The utility model is described in detail below in conjunction with the accompanying drawings.

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] Embodiment 1

[0034] In this embodiment, if Figure 1 and Figure 2 As shown, a modular permanent magnet variable frequency five-cylinder drilling pump 2 group includes: an electric control cabinet base, a drilling pump 2 base and an irrigating pump base, and the electric control cabinet base, the drilling pump 2 base and the irrigating pump base are detachably connected;

[0035] The base of the electric control cabinet is provided with a control system 1;

[0036] The base of the drilling pump 2 is provided with a drilling pump 2, a lubrication system 3 and a water cooling system 4. The drilling pump 2 includes a main motor 5 for driving the drilling pump 2. In this embodiment, the main motor 5 adopts a permanent magnet variable frequency motor;

[0037] The irrigating pump base is provided with an irrigating system 6 and an irrigating pump control cabinet 7, and the irrigating pump control cabinet 7 is electrically connected with the irrigating system 6;

[0038] The control system 1 is electrically connected to the drilling pump 2, the lubrication system 3 and the water cooling system 4;

[0039] Each base is connected by bolts, and the control system 1 is integrated and electrically connected to each module, which is convenient for controlling each module and collecting information from sensors at various locations for centralized processing;

[0040] The drilling pump 2 is divided into three modules through modular design to achieve integration of the drilling pump 2, which is more concise and convenient, with a smaller volume, making the pump group easy to install and disassemble on site and reducing the risk of misoperation; it provides convenience for the commissioning, operation and maintenance of the pump group; at the same time, the detachable structure allows for flexible assembly of various modules according to usage, and is also more convenient when transporting the pump group.

[0041] Furthermore, the control system 1 includes a motor control cabinet 8 and a PLC control cabinet 9. The motor control cabinet 8 uses an MCC cabinet, which is also called a motor control center and is a device specifically used to control and protect motors. The PLC control cabinet 9 refers to a programmable control cabinet, which is mainly used to control the wiring cabinet composed of the intelligent control system 1 and can realize the control of the main motor 5 switch. The above method realizes local control of electrical equipment.

[0042] The MCC cabinet and the filling pump control cabinet 7 are mainly used to control auxiliary equipment, such as the spray pump motor in the spray system, the lubricating oil pump 10 motor in the lubrication system 3, the filling pump motor in the filling system 6, etc.; in addition, they are also used to provide local control power supply;

[0043] The PLC control cabinet 9 mainly includes two parts: a control module and a control system 1 integration; the control module includes a pump body data acquisition sensor, a PLC controller, an IO input and output expansion unit, and a communication unit; the control system 1 integration includes main motor 5 control and protection, main motor 5 water cooling system control, perfusion control and protection, and lubrication control and protection.

[0044] The present invention realizes the local arrangement of the electric control system by modularizing the electric control system according to its functions. Compared with the traditional VFD electric control, it not only reduces the transportation difficulty and transportation cost, but also simplifies the external electrical interface and reduces the use of external cables, making the pump group easy to install and disassemble on site and reducing the risk of misoperation; it provides convenience for the commissioning, operation and maintenance of the pump group.

[0045] Furthermore, the lubrication system 3 includes a lubrication oil pump 10, a lubrication pipeline 11 and an air cooler 12. The lubrication oil pump 10 is connected to the friction pair of the drilling pump 2 and the air cooler 12 via the lubrication pipeline 11 to form a loop.

[0046] Furthermore, the lubrication pipeline 11 at the oil outlet of the lubrication pump 10 is provided with a lubrication filter 15, and the lubrication filter 15 can effectively filter impurities in the lubrication oil, ensure that impurities such as metal chips that may exist therein are effectively filtered out, and ensure the normal operation of the unit.

[0047] Furthermore, the lubrication system 3 includes a pressure sensor, an overflow pipe 16 and an overflow valve 17. The pressure sensor is arranged on the lubrication pipeline 11 and is electrically connected to the overflow valve 17. The overflow pipe 16 is connected to the lubrication pipeline 11, and the overflow valve 17 is arranged on the overflow pipe 16. When the pressure sensor detects that the pressure in the system exceeds the set pressure of the overflow safety valve, the system releases pressure by opening the overflow valve 17 to protect the system safety, while ensuring the safe and reliable operation of each component.

[0048] The lubrication system 3 is connected to each friction pair through a pipeline system. There are pressure, temperature and other sensors in the pipeline system. The electronic control system intelligently detects operating parameters such as oil temperature and oil pressure to ensure that the drilling pump 2 can continue to operate efficiently and reliably.

[0049] Furthermore, the water cooling system 4 includes a water cooling pipeline 18 and a water pump 19. The water pump 19 is connected to the main motor 5 and the air cooler 12 through the water cooling pipeline 18 to form a loop. After the cooling medium exchanges heat with the main motor 5, it flows back to the water pump 19 through the water cooling pipeline 18. The cooling medium in the water cooling pipeline 18 is pressurized by the water pump 19 and flows continuously through the water cooling pipeline 18 through the air cooler 12 for heat exchange at a constant pressure and flow rate. After the heat exchange, the cooling medium finally reaches the heat exchange pipeline of the main motor 5 through the water cooling pipeline 18, and then flows back to the water pump 19 after completing the heat exchange, and the cycle is repeated.

[0050] The heat dissipation of the main motor 5 through the water cooling system of the lubrication system 3 is lower in noise and more environmentally friendly. In a high-temperature environment, the circulating water is lower in temperature than the ambient temperature. The heat dissipation of the water cooling system is also more advantageous than the heat dissipation of the main motor 5 by a single fan.

[0051] Furthermore, the water cooling pipeline 18 is provided with a water cooling filter 20, and the water cooling filter 20 can filter impurities in the water cooling medium to improve the cooling efficiency and service life.

[0052] Furthermore, it includes a transmission gear, and the main motor 5 is arranged on the top of the drilling pump 2, and directly drives the drilling pump 2 through the transmission gear.

[0053] Furthermore, the main motor 5 is provided with a motor junction box; the main motor in this solution is top-mounted and adopts a permanent magnet variable frequency motor, which is integrated with a frequency converter module and a permanent magnet motor. The main motor 5 runs stably at a low speed and directly drives the transmission gear to make the drilling pump 2 work, eliminating the intermediate transmission devices such as belt drive, chain drive or gear drive required by the traditional drilling pump 2 drive device, achieving the purpose of direct drive of the main motor 5 and improving the transmission efficiency and work reliability. The junction box of the main motor 5 is placed at the rear of the main motor 5, and the start and stop and intermittent operation of the main motor 5 can be realized according to the use requirements.

[0054] Embodiment 2

[0055] On the basis of the first embodiment, the lubrication system 3 includes a temperature control switch 13 and a bypass pipeline 14 . The bypass pipeline 14 and the air cooler 12 are connected in parallel to the lubrication pipeline 11 . The temperature control switch 13 is arranged at the connection between the lubrication pipeline 11 and the bypass pipeline 14 .

[0056] The lubricating oil pump 10 sucks the lubricating oil and discharges it from the oil pump outlet pipeline, passes through the filter, and the filtered lubricating oil is identified by the temperature control switch 13. If the lubricating oil temperature is lower than the set value, the lubricating oil passes through the filter into the bypass pipeline 14, and then enters the friction pair of the permanent magnet variable frequency five-cylinder drilling pump 2;

[0057] If the lubricating oil temperature is higher than the set value, the lubricating oil enters the air cooler 12, and the air cooler 12 cools the lubricating oil. Then the lubricating oil is discharged through the oil outlet of the cooler and enters the friction pair of the permanent magnet variable frequency five-cylinder drilling pump 2, thereby effectively lubricating and cooling each friction pair of the drilling pump 2.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular permanent magnet variable frequency five-cylinder drilling pump set, characterized in that: include: An electric control cabinet base, a drilling pump (2) base and an irrigating pump base, wherein the electric control cabinet base, the drilling pump (2) base and the irrigating pump base are detachably connected; The electric control cabinet base is provided with a control system (1); The drilling pump (2) base is provided with a drilling pump (2), a lubrication system (3) and a water cooling system (4), and the drilling pump (2) comprises a main motor (5) for driving the drilling pump (2); The irrigation pump base is provided with an irrigation system (6) and an irrigation pump control cabinet (7), and the irrigation pump control cabinet (7) is electrically connected to the irrigation system (6); The control system (1) is electrically connected to a drilling pump (2), a lubrication system (3) and a water cooling system (4).

2. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 1, characterized in that: The control system (1) comprises a motor control cabinet (8) and a PLC control cabinet (9).

3. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 1, characterized in that: The lubrication system (3) comprises a lubrication oil pump (10), a lubrication pipeline (11) and an air cooler (12); the lubrication oil pump (10) is connected to a drilling pump (2) friction pair and the air cooler (12) via the lubrication pipeline (11) to form a loop.

4. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 3, characterized in that: The lubrication system (3) comprises a temperature control switch (13) and a bypass pipeline (14); the bypass pipeline (14) and the air cooler (12) are connected in parallel to the lubrication pipeline (11); and the temperature control switch (13) is arranged at the connection between the lubrication pipeline (11) and the bypass pipeline (14).

5. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 3, characterized in that: The lubricating oil filter (15) is provided on the lubricating oil pipeline (11) at the oil outlet end of the lubricating oil pump (10).

6. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 3, characterized in that: The lubrication system (3) comprises a pressure sensor, an overflow pipe (16) and an overflow valve (17); the pressure sensor is arranged on the lubrication pipeline (11) and is electrically connected to the overflow valve (17); the overflow pipe (16) is connected to the lubrication pipeline (11); and the overflow valve (17) is arranged on the overflow pipe (16).

7. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 3, characterized in that: The water cooling system (4) comprises a water cooling pipeline (18) and a water pump (19); the water pump (19) is connected to the main motor (5) and the air cooler (12) via the water cooling pipeline (18) to form a loop.

8. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 7, characterized in that: The water cooling pipeline (18) is provided with a water cooling filter (20).

9. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 1, characterized in that: It comprises a transmission gear, and the main motor (5) is arranged on the top of the drilling pump (2) and directly drives the drilling pump (2) through the transmission gear.

10. A modular permanent magnet variable frequency five-cylinder drilling pump set as claimed in claim 1, characterized in that: The main motor (5) is provided with a motor junction box.

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