CN113356942B

CN113356942B - Method for operating a turbine fracturing device and turbine fracturing device

Info

Publication number: CN113356942B
Application number: CN202110608526.8A
Authority: CN
Inventors: 毛竹青; 张日奎; 张鹏; 王建伟; 王吉华; 纪晓磊
Original assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Current assignee: Yantai Jereh Petroleum Equipment and Technologies Co Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2023-01-20
Anticipated expiration: 2041-06-01
Also published as: CN113356942A; WO2022252379A1; AU2021418329A1

Abstract

A method of operating a turbine fracturing apparatus and a turbine fracturing apparatus are provided. The turbine fracturing equipment comprises a turbine engine, a speed reducer, a brake mechanism and a fracturing pump, and the operation method of the turbine fracturing equipment comprises the following steps: the turbine engine drives a fracturing pump through a speed reducer to perform fracturing operation so as to enable the fracturing pump to be in an operating state, the fracturing pump is configured to suck fluid at a first pressure and is configured to discharge fluid at a second pressure, and the second pressure is larger than the first pressure; in response to the idle command, the turbine engine enters an idle state and triggers a brake so that the fracturing pump is in a non-operating state. According to the operation method of the turbine fracturing equipment, the idling instruction enables the turbine engine to enter the idling state, the brake is triggered, the turbine fracturing equipment is favorably and quickly put into and respond, the turbine fracturing equipment is favorably and quickly operated again, and the operation reliability of the turbine engine and the fracturing well site reliability are improved.

Description

Method for operating a turbine fracturing device and turbine fracturing device

Technical Field

At least one embodiment of the present disclosure relates to a method of operating a turbine fracturing apparatus and a turbine fracturing apparatus.

Background

The principle of the turbine fracturing equipment is that a turbine engine is directly connected with a reduction gearbox, and the reduction gearbox is connected with a fracturing pump to drive the fracturing pump. For example, the fracturing pump comprises a plunger pump.

Disclosure of Invention

At least one embodiment of the present disclosure provides a method of operating a turbine fracturing apparatus and a turbine fracturing apparatus.

At least one embodiment of the present disclosure provides a method of operating a turbine fracturing apparatus including a turbine engine, a speed reducer, a brake mechanism, and a fracturing pump, the method comprising: the turbine engine drives the fracturing pump through the speed reducer to perform fracturing operation so as to enable the fracturing pump to be in a running state, the fracturing pump is configured to suck fluid at a first pressure and is configured to discharge fluid at a second pressure, and the second pressure is larger than the first pressure; and responding to an idling instruction, the turbine engine enters an idling state, and a brake is triggered, so that the fracturing pump is in a non-operation state.

For example, the method of operating a turbine fracturing apparatus further comprises: triggering an overpressure command in the event that the pressure of the second pressure of fluid discharged by the frac pump is greater than an overpressure protection value, the overpressure command triggering the idle command.

For example, the method of operating a turbine fracturing apparatus further comprises: starting the turbine engine in response to a start command before the frac pump is in an operational state, the start command triggering the idle command such that the turbine engine is in the idle state during start-up of the turbine engine.

For example, the method of operating a turbine fracturing apparatus further comprises: when the fracturing pump is in the running state, responding to a running canceling instruction to cancel the running state of the fracturing pump, wherein the running canceling instruction triggers the idling instruction.

For example, manually inputting the operation releasing instruction to release the operation state of the fracturing pump; or triggering the operation releasing instruction according to an alarm protection program to release the operation state of the fracturing pump, wherein the alarm protection program comprises triggering the operation releasing instruction under the condition that at least one of the pressure of lubricating oil of the fracturing pump is lower than a first preset value, the temperature of the lubricating oil of the fracturing pump is higher than a second preset value and the pressure of the lubricating oil of the speed reducer is lower than a third preset value.

For example, the method of operating a turbine fracturing apparatus further comprises: stopping work in response to an emergency stop instruction, wherein the emergency stop instruction triggers the idling instruction, the triggering of the emergency stop instruction comprises triggering of an emergency stop instruction by an emergency stop protection program and manual judgment of emergency, and on the premise that the emergency stop protection program is not triggered, at least one of the emergency stop instruction is triggered, the emergency stop protection program comprises triggering of the emergency stop instruction when the pressure of lubricating oil of the turbine engine is lower than a fourth preset value, the vibration amplitude of the turbine engine is higher than a fifth preset value, and the exhaust temperature of the turbine engine is higher than at least one of sixth preset values.

For example, a method of operating a turbine fracturing apparatus, further comprising: responding to a stop command to stop work and shut down the turbine fracturing equipment, wherein the stop command triggers the idle command.

For example, the idle speed command triggers a braking command, and the braking is triggered in response to the braking command.

At least one embodiment of the present disclosure also provides a turbine fracturing device, which is operated by using any one of the operation methods of the turbine fracturing device.

For example, the speed reducer comprises a reduction gearbox, the speed reducer is connected with the fracturing pump through a transmission shaft, the brake mechanism comprises a brake block and a brake block, the brake block is arranged on the reduction gearbox, the brake block is connected with the transmission shaft, and the brake block is driven by a hydraulic unit.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present disclosure and do not limit the present disclosure.

Fig. 1 is a schematic diagram of a turbine fracturing apparatus provided by an embodiment of the present disclosure.

Fig. 2 is a schematic perspective view of a brake mechanism of a turbine fracturing device according to an embodiment of the present disclosure.

Fig. 3 is a side view of a brake mechanism of a turbine fracturing apparatus provided by an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of a method of operating a turbine fracturing apparatus provided by an embodiment of the present disclosure.

Fig. 5 is a schematic diagram of a turbine fracturing apparatus provided by an embodiment of the present disclosure.

Fig. 6 is a schematic diagram of a turbine fracturing apparatus provided by an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like include physical or mechanical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Fracturing operations have two basic requirements for fracturing equipment. First, the hot car stage cannot have a displacement output, and the frac pump can only be activated to provide displacement when needed. Secondly, in emergency situations, including overpressure situations, the output needs to be cut off urgently, namely, the fracturing pump needs to be separated from the front end, and accidents are avoided.

In some existing fracturing apparatus, a clutch is provided. However, due to the nature of the clutch not being able to engage at high speeds, the clutch must be engaged before starting, otherwise the clutch may be damaged. Thus, the application of the clutch is engagement prior to start-up, when displacement is required, to start the turbine engine; in an emergency, the clutch is disengaged, and the fracturing pump is stopped under the action of inertia or under the load of a wellhead.

The turbine fracturing equipment adopts a clutch to realize quick disengagement, but has certain problems. Firstly, the clutch must be engaged before the plant is started, which limits the range of use of the clutch, which can only be engaged before starting, and if it is engaged again after overpressure, it is necessary to stop the plant, and a quick start of the plant cannot be achieved. Secondly, after overpressure protection, the clutch enables the fracturing pump to be quickly separated from the speed reducer, and the load is lost instantly, so that the turbine engine is likely to fly, and risks are brought to the turbine engine; of course, the fracturing pump is stopped by inertia or by the load of the wellhead at this time, and the rear end is also influenced to some extent. Thirdly, the clutch is not suitable for frequent start and stop, is easy to cause sealing damage, has short service life and increases the maintenance cost.

Fig. 1 is a schematic diagram of a turbine fracturing apparatus provided by an embodiment of the present disclosure. As shown in fig. 1, the turbine fracturing apparatus includes a turbine engine 1, a speed reducer 2, a torque limiter 3, a transmission 4, and a fracturing pump 5. As shown in fig. 1, a turbine engine 1, a speed reducer 2, a torque limiter 3, a transmission mechanism 4, and a fracturing pump 5 are connected in sequence to constitute a transmission system of a turbine fracturing apparatus. The transmission mechanism 4 includes a coupling, for example. For example, the fracturing pump 5 comprises a plunger pump. For example, the fracturing pump 5 is configured to take in a low pressure fracturing fluid and pressurize it to form a high pressure fracturing fluid. The pressure of the high pressure fracturing fluid is greater than the pressure of the low pressure fracturing fluid. The low pressure fracturing fluid may also be referred to as the suction fluid and the high pressure fracturing fluid may also be referred to as the discharge fluid. The low pressure fracturing fluid may be referred to as a first pressure fluid. The high pressure fracturing fluid may be referred to as a second pressure fluid. For example, the fracturing pump 5 is configured to intake fluid at a first pressure and to discharge fluid at a second pressure, the second pressure being greater than the first pressure. For example, in the turbine fracturing equipment provided by some embodiments of the present disclosure, the torque limiter 3 may not be provided, and in this case, the speed reducer 2 is connected with the fracturing pump 5 through the transmission mechanism 4.

As shown in fig. 1, a brake mechanism 6 may be provided between the speed reducer 2 and the fracturing pump 5 so that the speed reducer 2 and the fracturing pump 5 are in a disconnected state. The embodiment of the present disclosure provides a turbine fracturing equipment, makes speed reducer 2 and fracturing pump 5 break off through setting up brake mechanism 6. The speed reducer 2 and the fracturing pump 5 can be in a disconnected or connected state. In the embodiment of the present disclosure, when the speed reducer 2 and the fracturing pump 5 are in a disconnected state, the fracturing pump 5 is in a non-operating state, and when the speed reducer 2 and the fracturing pump 5 are in a connected state, the fracturing pump 5 is in an operating state.

Fig. 2 is a schematic perspective view of a brake mechanism of a turbine fracturing device provided by an embodiment of the present disclosure, and fig. 3 is a side view of the brake mechanism of the turbine fracturing device provided by an embodiment of the present disclosure. As shown in fig. 2 and 3, the brake mechanism 6 includes a brake pad 61 and a brake shoe 62. For example, the friction between the brake pads 61 and 62 acts as a brake. For example, the brake pads 62 may also be referred to as friction pads. For example, in the braking state, the brake mechanism 6 is a load of the output shaft of the turbine engine, and takes the power output of the output shaft of the turbine engine, so that the fracturing pump 5 is in the non-operating state. Fig. 1 to 3 illustrate an example in which the brake mechanism 6 is located on the opposite side of the speed reducer 2 from the side to which the turbine engine 1 is connected, but the embodiment of the present disclosure is not limited to this. In other embodiments, the brake mechanism 6 may be disposed in other suitable locations. For example, the brake mechanism 6 may be disposed between the transmission mechanism 4 and the fracturing pump 5, i.e., on an input shaft of the fracturing pump 5.

The embodiments of the present disclosure are described by taking the turbine fracturing apparatus shown in fig. 1 to 3 as an example, but not limited thereto, and the structure of the turbine fracturing apparatus may be determined as needed.

Fig. 4 is a schematic diagram of an operation method of a turbine fracturing device according to an embodiment of the present disclosure. As shown in fig. 4, the entire operation of the turbine fracturing apparatus is around the idle command, which directly controls the brakes.

At least one embodiment of the present disclosure provides an operation method of a turbine fracturing apparatus, and referring to fig. 1 to 4, the turbine fracturing apparatus includes a turbine engine 1, a speed reducer 2, a brake mechanism 6, and a fracturing pump 5. The operation method of the turbine fracturing equipment comprises the following steps: the turbine engine 1 drives the fracturing pump 5 through the speed reducer 2 to perform fracturing operation so as to enable the fracturing pump 5 to be in a running state; in response to the idle command, the turbine engine 1 enters an idle state and triggers the brake so that the frac pump 5 is in a non-operational state. For example, when the turbine engine 1 is in the idling state, the output power of the turbine engine 1 is small.

For example, in other embodiments, a method of operating a turbine fracturing apparatus comprises: in response to an idle command, the turbine engine 1 enters an idle state; and triggering a brake instruction by the idling instruction, and responding to the brake instruction, and triggering the brake to enable the fracturing pump 5 to be in a non-operation state. In response to a braking command or a braking action, the turbine fracturing equipment enters a braking state. For example, braking is the control of the rotational speed of the output shaft of the reduction gearbox. For example, a brake command is triggered while the turbine engine 1 is in an idle state. For example, a brake command is triggered at the same time as an idle command is issued.

The fracturing pump 5 is in a running state, which means that the fracturing pump 5 is in a working state of sucking low-pressure liquid and discharging high-pressure liquid. The non-operating state of the fracturing pump 5 means a non-operating state in which the fracturing pump 5 does not suck low-pressure liquid and discharges high-pressure liquid. For example, the running state of the fracturing pump 5 can refer to a state that the fracturing pump 5 has displacement output, and the non-running state of the fracturing pump 5 refers to a state that the fracturing pump 5 has no displacement output.

For example, referring to fig. 1, an output shaft of a turbine engine 1 is connected to an input shaft of a speed reducer 2, and an output shaft of the speed reducer 2 is connected to an input shaft of a fracturing pump 5.

For example, the idling state refers to a state in which the turbine engine 1 is located. In response to the idle speed command, the turbine fracturing apparatus adjusts the rotational speed of the output shaft of the turbine engine 1. For example, in the case where the turbine engine 1 is driven by fuel, the rotation speed of the output shaft of the turbine engine 1 can be adjusted by adjusting the oil intake amount, and for example, the rotation speed of the output shaft of the turbine engine 1 can be reduced by reducing the oil intake amount. For example, in the case where the turbine engine 1 is driven by gas, the rotation speed of the output shaft of the turbine engine 1 may be adjusted by adjusting the intake air amount, and for example, the rotation speed of the output shaft of the turbine engine 1 may be decreased by decreasing the intake air amount.

For example, in the idling state, the rotation speed of the output shaft of the turbine engine 1 is smaller than the rotation speed when the turbine engine 1 drives the fracturing pump 5 to perform fracturing work. For example, in the idling state, the rotation speed of the output shaft of the turbine engine 1 is stable and greater than a set value, for example, the set value is 0, that is, in the idling state, the rotation speed of the output shaft of the turbine engine 1 is greater than 0. For example, in the idling state, the rotation speed of the output shaft of the turbine engine 1 is small. For example, in the braking state, the rotation speed of the output shaft of the turbine engine 1 is 0. For example, in the case where the turbine fracturing apparatus is in an operating state, the rotational speed of the output shaft of the turbine engine 1 is greater than the rotational speed of the input shaft of the fracturing pump 5.

For example, as shown in fig. 4, the method of operating a turbine fracturing apparatus further comprises: in case the pressure of the fluid at the second pressure discharged by the frac pump 5 is greater than the overpressure protection value, an overpressure command is triggered, which triggers an idle command. In response to the overpressure command, the turbine fracturing device enters an overpressure protection state.

For example, the overpressure command is from a pressure sensor of the fracturing pump, the pressure sensor is configured to detect the pressure of the high-pressure fracturing fluid of the fracturing pump, and when the pressure sensor detects that the pressure of the high-pressure fracturing fluid is greater than a set overpressure protection value, the overpressure command is directly triggered, and then the idling state is triggered.

For example, as shown in fig. 4, the method of operating a turbine fracturing apparatus further comprises: before the frac pump 5 is in operation, the turbine engine 1 is started in response to a start command, which triggers an idle command, so that during the start of the turbine engine 1 is in idle.

For example, during the start-up of the turbine engine 1, the start-up command is manually controlled, and in response to the start-up command, the turbine fracturing device executes a start-up procedure in which the turbine fracturing device is in an idle state throughout the start-up procedure.

For example, as shown in fig. 4, the method of operating a turbine fracturing apparatus further comprises: when the fracturing pump 5 is in the running state, the running state of the fracturing pump 5 is released in response to the operation releasing instruction, and the operation releasing instruction triggers the idle speed instruction.

For example, as shown in fig. 4, the operation release command is manually input to release the operation state of the fracturing pump 5.

For example, as shown in fig. 4, the alarm protection program triggers a release operation instruction to release the operation state of the fracturing pump 5, and the alarm protection program includes triggering the release operation instruction in a case where at least one of the pressure of the lubricating oil of the fracturing pump 5 is lower than a first preset value, the temperature of the lubricating oil of the fracturing pump 5 is higher than a second preset value, and the pressure of the lubricating oil of the speed reducer 2 is lower than a third preset value. For example, the alarm protection program is a preset program.

For example, when the fracturing pump 5 is in an operating state, two conditions may trigger a release operation instruction, one of which may manually input the release operation instruction according to the work displacement requirement to release the operating state of the fracturing pump 5, so that the turbine engine 1 becomes an idle state, and the other may trigger the release operation instruction according to a preset alarm protection program. For example, the conditions of low pressure of lubricating oil of the fracturing pump, high temperature of the lubricating oil of the fracturing pump, low pressure of the lubricating oil of the reduction gearbox and the like can trigger the release of the operation instruction.

For example, as shown in fig. 4, the method of operating a turbine fracturing apparatus further comprises: the method comprises the steps that operation is stopped in response to an emergency stop instruction, the emergency stop instruction triggers an idling instruction, the triggering of the emergency stop instruction comprises triggering of the emergency stop instruction by an emergency stop protection program and manual judgment of emergency, on the premise that the emergency stop protection program is not triggered, at least one of the emergency stop instructions is triggered, the emergency stop protection program comprises triggering of the emergency stop instruction under the condition that the pressure of lubricating oil of the turbine engine 1 is lower than a fourth preset value, the vibration amplitude of the turbine engine 1 is higher than a fifth preset value, and the exhaust temperature of the turbine engine 1 is higher than at least one of sixth preset values. For example, the emergency stop protection program is a preset program.

For example, the emergency stop instruction comes from two ways, one of which is to manually judge the emergency, trigger the emergency stop instruction on the premise that the emergency stop protection program is not triggered, and further trigger the idle state; and the other is that a preset emergency stop protection program is triggered, so that the turbine fracturing equipment is in an emergency stop state, for example, at least one of too low pressure, too high vibration, too high exhaust temperature and the like of engine lubricating oil triggers an emergency stop instruction, and further triggers an idling state.

For example, the method of operating a turbine fracturing apparatus further comprises: the stop command triggers an idle command in response to the stop command to stop work and shut down the turbine fracturing equipment.

When the operation is finished and the turbine fracturing equipment needs to be shut down, a stop instruction is manually input, the stop instruction triggers an idle speed instruction, the turbine engine 1 enters an idle speed state, and the idle speed instruction triggers a brake, so that the turbine fracturing equipment is shut down.

As shown in fig. 4, at least one of an overpressure command, a start command, a release operation command, a stop command, and an emergency stop command may trigger an idle command, and thus a brake.

The brake is triggered through the idle speed instruction or the brake instruction, and the application of the brake of the turbine fracturing equipment is achieved. For example, in some embodiments, the idle command directly triggers braking.

According to the operation method of the turbine fracturing equipment, the idling instruction enables the turbine engine to enter the idling state, the brake is triggered, the turbine fracturing equipment is favorably put into and responds quickly, the turbine fracturing equipment is favorably operated again quickly, and the operation reliability of the turbine engine and the reliability of a fracturing well site are improved. The turbine fracturing equipment provided by the embodiment of the disclosure does not have a clutch, but brakes when the turbine engine is in an idling state through the brake mechanism.

In the turbine fracturing equipment, compared with the arrangement of a clutch, the arrangement of the brake mechanism has the advantage of at least one of the following advantages.

(1) The structure of the clutch is complex, replacement of spare parts is troublesome, and particularly parts such as an oil seal belong to quick-wear parts. The brake mechanism is simple in structure and convenient to install, and the brake pad of the brake mechanism is convenient to replace.

(2) The clutch can be meshed and connected at a low speed, if the clutch is disconnected, the turbine fracturing equipment can be connected again after the speed of the turbine fracturing equipment is reduced, and the limitation condition exists on the operation of the turbine fracturing equipment. And the engagement and disengagement of the brake mechanism have no requirement on the rotating speed.

(3) And in the working state, the clutch needs to be in a closed state, and if the clutch breaks down, the field operation cannot be continued. However, in the working state, the brake is in the off state, and the brake mechanism breaks down, so that the normal work of the turbine fracturing equipment cannot be influenced.

(4) The starting process can be automatically judged by realizing starting and braking in the starting process, and the state of the turbine fracturing equipment does not need to be determined, such as clutch judgment.

(5) The turbine fracturing equipment using the brake mechanism can determine whether to enter an idle state or not and determine whether to enter an operating state or not according to requirements; the turbine fracturing equipment can be started in advance; the running state and the idling state can be switched at any time and can be put into use at any time; the turbine fracturing equipment using the clutch is too long in starting process, and quick input and response of the turbine fracturing equipment are affected.

(6) After overpressure, only an idle speed command and a brake need to be triggered, and a stop command does not need to be triggered, so that the turbine fracturing equipment can be rapidly operated again.

(7) And power is consumed by braking, the turbine fracturing equipment can be stopped in a loaded mode instead of transmitting the power to the rear end, the operation risk and well site risk problems of the turbine engine are reduced, and the operation reliability and the fracturing well site reliability of the turbine engine are improved.

For example, in some embodiments of the present disclosure, the first preset value, the second preset value, the third preset value, the fourth preset value, the fifth preset value, and the sixth preset value may be set as needed.

At least one embodiment of the disclosure also provides turbine fracturing equipment which is operated by any one of the operation methods.

For example, referring to fig. 2 and 3, the speed reducer 2 includes a reduction gearbox 20, the speed reducer 2 and the fracturing pump 5 are connected through a transmission shaft 70, the brake mechanism includes a brake block 61 and a brake block 62, the brake block 62 is disposed on the reduction gearbox 20, and the brake block 61 is connected with the transmission shaft 70. The transmission shaft 70 is an output shaft of the reduction gear 2. For example, the reduction gear 2 further includes a reduction mechanism located within the reduction gear box 20. For example, the brake pad 61 rotates with the transmission shaft 70. For example, in response to an idle command or a brake command or when the turbine engine 1 is in an idle state, the brake block 62 contacts the brake sheet 61 to perform braking so as to control the rotation speed of the transmission shaft 70 of the reduction gearbox 2, so that the rotation speed of the transmission shaft 70 is reduced, for example, the braking may make the rotation speed of the transmission shaft 70 zero.

Fig. 5 is a schematic diagram of a turbine fracturing apparatus provided by an embodiment of the present disclosure. As shown in fig. 5, the brake pads 62 are actuated by the hydraulic unit 60. For example, in response to an idle speed command or a braking command, the hydraulic unit 60 controls the brake pads 62 to perform braking. For example, the hydraulic unit 60 controls the brake block 62 to move to contact and rub the brake pad 61, thereby performing a braking function. For example, the hydraulic unit 60 includes a hydraulic pump, a hydraulic motor, and a control valve.

As shown in fig. 5, the turbine fracturing apparatus further includes a control unit 80, and the control unit 80 controls the hydraulic unit 60 to drive the brake blocks 62.

As shown in fig. 5, the turbine engine 1 includes an output shaft 12, the speed reducer 2 includes an input shaft 21 and an output shaft 22, and the frac pump 5 includes an input shaft 51. As shown in fig. 5, the output shaft 12 of the turbine engine 1 is connected to the input shaft 21 of the speed reducer 2, and the output shaft 22 of the speed reducer 2 is connected to the input shaft 51 of the fracturing pump 5. For example, the output shaft 22 may be the drive shaft 70 described above.

As shown in fig. 5, the turbine fracturing apparatus further comprises a turbine engine controller 10, and the control unit 80 is connected to the turbine engine controller 10 to control the rotational speed of the output shaft 12 of the turbine engine 1.

Fig. 6 is a schematic diagram of a turbine fracturing apparatus provided by an embodiment of the present disclosure. As shown in fig. 6, the solid lines represent hydraulic fluid, the arrows represent hydraulic fluid flow, and the dashed lines are mechanical connections between components.

As shown in fig. 6, the fuel tank 02 supplies the engine 03, the engine 03 is connected to the hydraulic pump 04, and the hydraulic tank 01 is connected to the hydraulic pump 04.

As shown in fig. 6, the hydraulic pump 04 supplies oil to the actuating motor 05 of the turbine fracturing equipment, the actuating motor 05 includes a starter motor 051, a lubrication motor 052, a cooling motor 053, and a brake motor 054, and the lubrication motor 052 is connected with the lubrication pump 011 to drive the lubrication pump 011 to deliver the lubrication oil from the lubrication oil tank 08 to the fracturing pump 5, the speed reducer 2, and the turbine engine 1 for lubrication thereof.

As shown in fig. 6, the cooling motor 053 drives the radiator 06, the starting motor 051 is connected to the turbine engine 2 to start the turbine engine 2, and the braking motor 054 drives the braking mechanism 6.

The turbine fracturing equipment adopts an auxiliary engine as a power source to drive parts such as complete machine lubrication, cooling, turbine engine starting, gas supply and the like.

As shown in fig. 6, the turbine fracturing apparatus includes a start control valve 05a, a lubrication control valve 05b, a cooling control valve 05c, and a brake control valve 05d.

As shown in fig. 6, the control unit 80 is connected to the start control valve 05a, the lubrication control valve 05b, the cooling control valve 05c, and the brake control valve 05d to control the opening, closing, and opening of the corresponding control valves, respectively.

As shown in fig. 6, the control unit 80 is connected to the turbine engine controller 10 to control the rotational speed of the output shaft 12 of the turbine engine 1.

Fig. 6 illustrates an example in which the engine 03 of the hydraulic pump 04 is driven by fuel, the starter motor 051, the lubrication motor 052, the cooling motor 053, and the brake motor 054 are all hydraulic motors, but the turbo fracturing apparatus provided by the embodiment of the present disclosure is not limited to that shown in fig. 6. For example, in some embodiments, the hydraulic motor may be replaced with an electric motor.

Embodiments of the present disclosure provide a turbine fracturing apparatus that may also include one or more processors and one or more memories. The processor may process data signals and may include various computing architectures such as a Complex Instruction Set Computer (CISC) architecture, a Reduced Instruction Set Computer (RISC) architecture, or an architecture that implements a combination of instruction sets. The memory may hold instructions and/or data for execution by the processor. The instructions and/or data may include code for performing some or all of the functions of one or more of the devices described in embodiments of the present application. For example, the memory includes Dynamic Random Access Memory (DRAM), static Random Access Memory (SRAM), flash memory (flash memory), optical memory (optical memory), or other memories known to those skilled in the art.

In some embodiments of the present application, the control unit 80 or turbine engine controller 10 includes code and programs stored in memory; the processor may execute the code and programs to implement some or all of the functions of the control unit 80 or turbine engine controller 10 as described above.

In some embodiments of the present disclosure, control unit 80 or turbine engine controller 10 may be a special hardware device used to implement some or all of the functionality of control unit 80 or turbine engine controller 10 as described above. For example, the control unit 80 or turbine engine controller 10 may be a circuit board or a combination of circuit boards for performing the functions described above. In an embodiment of the present application, the one or a combination of the plurality of circuit boards may include: (1) one or more processors; (2) One or more non-transitory computer-readable memories connected to the processor; and (3) firmware stored in the memory executable by the processor.

Features of the same embodiment of the disclosure and of different embodiments may be combined with each other without conflict.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A method of operating a turbine fracturing apparatus comprising a turbine engine, a speed reducer, a brake mechanism, and a fracturing pump, the method comprising:

the turbine engine drives the fracturing pump through the speed reducer to perform fracturing operation so as to enable the fracturing pump to be in a running state, the fracturing pump is configured to suck fluid at a first pressure and is configured to discharge fluid at a second pressure, and the second pressure is larger than the first pressure; and

in response to an idle command, the turbine engine enters an idle state and triggers a brake to enable the fracturing pump to be in a non-running state,

in a braking state, the braking mechanism is used as a load of an output shaft of the turbine engine and bears the power output of the output shaft of the turbine engine, so that the fracturing pump is in a non-operation state.

2. The method of operating a turbine fracturing apparatus of claim 1, further comprising: triggering an overpressure command in the event that the pressure of the second pressure of fluid discharged by the frac pump is greater than an overpressure protection value, wherein the overpressure command triggers the idle speed command.

3. The method of operating a turbine fracturing apparatus of claim 1, further comprising: starting the turbine engine in response to a start command before the frac pump is in an operational state, wherein the start command triggers the idle command such that the turbine engine is in the idle state during start-up of the turbine engine.

4. A method of operating a turbine fracturing apparatus as claimed in any of claims 1 to 3, further comprising: when the fracturing pump is in the running state, responding to a running canceling instruction to cancel the running state of the fracturing pump, wherein the running canceling instruction triggers the idling instruction.

5. The method of operating a turbine fracturing apparatus of claim 4, wherein the decommissioning command is manually entered to decommission the operating state of the fracturing pump; or triggering the operation releasing instruction according to an alarm protection program to release the operation state of the fracturing pump, wherein the alarm protection program comprises triggering the operation releasing instruction under the condition that at least one of the pressure of lubricating oil of the fracturing pump is lower than a first preset value, the temperature of the lubricating oil of the fracturing pump is higher than a second preset value and the pressure of the lubricating oil of the speed reducer is lower than a third preset value.

6. A method of operating a turbine fracturing apparatus as claimed in any of claims 1 to 3, further comprising: stopping work in response to an emergency stop instruction, wherein the emergency stop instruction triggers the idling instruction, the triggering of the emergency stop instruction comprises triggering of an emergency stop instruction by an emergency stop protection program and manual judgment of emergency, and on the premise that the emergency stop protection program is not triggered, at least one of the emergency stop instruction is triggered, the emergency stop protection program comprises triggering of the emergency stop instruction when the pressure of lubricating oil of the turbine engine is lower than a fourth preset value, the vibration amplitude of the turbine engine is higher than a fifth preset value, and the exhaust temperature of the turbine engine is higher than at least one of sixth preset values.

7. A method of operating a turbine fracturing apparatus as claimed in any of claims 1 to 3, further comprising: responding to a stop command to stop work and shut down the turbine fracturing equipment, wherein the stop command triggers the idle command.

8. The method of operating a turbine fracturing apparatus of any of claims 1 to 3, wherein the idle speed command triggers a brake command, the brake being triggered in response to the brake command.

9. A turbine fracturing apparatus operated using the method of operation of any one of claims 1 to 8, the turbine engine being connected to the reducer, the reducer being connected to the fracturing pump, the braking mechanism being provided between the reducer and the fracturing pump to act as a load on the output shaft of the turbine engine in a braked condition.

10. The turbine fracturing equipment of claim 9, wherein the reducer comprises a reduction gearbox, the reducer and the fracturing pump are connected through a transmission shaft, the brake mechanism comprises a brake pad and a brake block, the brake block is arranged on the reduction gearbox, the brake pad is connected with the transmission shaft, and the brake block is driven by a hydraulic unit.