Thermal power plant steam long-blowing pipeline driving equipment, system and method

Abstract

The invention discloses thermal power plant steam long blowing pipeline driving equipment which is characterized in that a supporting beam is arranged in the axial direction of a long blowing pipeline, a first driving part and the long blowing pipeline are connected with a sports car, the sports car is movably connected to the supporting beam in the arrangement direction of the supporting beam, and the input end of the sports car is connected with the head end of a driving shaft of the first driving part; the second driving piece is a driving piece with an energy supply part and is detachably connected with the tail end of a driving shaft of the first driving piece, and under the condition that the first driving piece cannot provide driving force, the driving shaft serves as a transmission part to drive the sports car to move along the supporting beam, so that the long blowing pipeline is driven to enter and exit from the flue. The long blowing pipeline is driven to enter and exit from the flue. According to the device, the long blowing pipeline can be withdrawn in time under the abnormal condition, manpower and time are saved, normal work of a system is prevented from being affected, and the safety of operators is guaranteed. The invention further provides a thermal power plant steam long-blowing pipeline driving method and a thermal power plant soot blowing system.

Description

Technical Field

[0001] The present invention specifically relates to a driving device, system and method for a long steam blowing pipeline in a thermal power plant. Background Art

[0002] Under the guidance of the dual carbon goals, the construction of a new power system has enabled large-scale new energy to enter the grid. In order to suppress the large fluctuations in new energy power generation, absorb more renewable energy, and use coal-fired thermal power units to participate in the peak load and frequency regulation of the power grid, it is particularly important to ensure the reliability of power supply in the power system. Coal-fired power generation units require coal powder to burn in the furnace of the boiler, and the heating medium generates steam to drive the steam turbine to work, thereby driving the generator to generate electricity. The flue gas generated by the combustion of coal powder carries fly ash. When flowing in the flue, some dust will be deposited on the heating surface. It is necessary to use a soot blower to blow the heating surface according to a certain rule to prevent long-term ash accumulation from causing uneven temperature of the heating surface, overheating of the pipe wall, and corrosion of the pipe wall. Therefore, the pipe wall should be blown in time by a steam soot blower to ensure the safety of the use of the heating surface pipe wall.

[0003] However, the long blowing pipe (also known as the soot blowing pipe) of the steam soot blower may not be withdrawn in time during soot blowing due to sudden equipment power outages, electrical control system failures, motor failures, etc. Once it cannot be withdrawn in time, it is easy to cause the long blowing pipe to be heated and deformed in the high-temperature flue gas flow environment; and due to mechanical failures of the equipment itself or bending and deformation of the soot blowing pipe, once it cannot be withdrawn in time, the deformation will be aggravated, which will cause the long blowing pipe to get stuck during the process of soot blowing and exiting the flue, and it will be even more impossible to exit the flue in time, and eventually damage it. At this time, maintenance personnel need to manually withdraw the long blowing pipe, which is time-consuming and labor-intensive, affects the normal operation of the soot blowing system, fails to blow the heated surface in time, reduces the soot blowing efficiency, and also has certain safety risks. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a thermal power plant steam long blowing pipeline driving device in view of the above-mentioned deficiencies in the prior art, which can timely complete the withdrawal of the long blowing pipeline under abnormal conditions, save manpower and time, avoid affecting the normal operation of the system, and ensure the safety of operators. The present invention also provides a thermal power plant steam long blowing pipeline driving method and a thermal power plant soot blowing system.

[0005] The present invention provides a driving device for a long-blowing steam pipe in a thermal power plant, which is used for driving the long-blowing steam pipe to enter and exit a flue in an axial direction. The device comprises a support beam, a sports car, a first driving member and a second driving member. The support beam is arranged in an axial direction of the long-blowing steam pipe. The first driving member and the long-blowing steam pipe are both connected to the sports car. The sports car is movably connected to the support beam in an arrangement direction of the support beam. The input end of the sports car is connected to the head end of a driving shaft of the first driving member so that the sports car moves along the support beam under the drive of the first driving member to drive the long-blowing steam pipe to enter and exit the flue. The second driving member is a driving member with an energy supply member, which is detachably connected to the tail end of the driving shaft of the first driving member. When the first driving member cannot provide driving force, the driving shaft is used as a transmission member to drive the sports car to move along the support beam so as to drive the long-blowing steam pipe to enter and exit the flue.

[0006] Furthermore, the device also includes a connecting component, which includes a bracket and a limit plate. The bracket is a cylindrical structure with openings at both ends. One end is open and can be detachably sleeved and connected to the outside of the first driving member, and is located on a side of the first driving member where the tail end of the driving shaft is provided. The other end is open and can be detachably connected to the limit plate. The second driving member is installed inside the bracket, one end is connected to the first driving member, and the other end is limited by the limit plate.

[0007] Furthermore, the bracket includes an annular portion and a claw, and a plurality of claws are provided, each claw is distributed at intervals around the axial direction of the bracket to form a cylindrical structure with strip grooves on the outer surface. One end of each claw is connected to the annular portion, and the other end is connected to the limit plate to clamp the second driving member inside the bracket from the circumferential direction.

[0008] Furthermore, the connecting assembly also includes a sleeve, the inner hole of the sleeve is a polygonal cross-section inner hole, the output shaft and the driving shaft of the second driving member are both columnar structures with polygonal cross-sections, and the output shaft of the second driving member is connected to the driving shaft and is connected through the sleeve.

[0009] Furthermore, the support beam is provided with a connecting rod arranged along the axial direction of the long blowing pipe, both ends of the connecting rod are fixed on the support beam body, and there is a gap between the rod body and the support beam body. The first driving member is connected to an external power supply through a telescopic cable, and the telescopic cable is spirally wound on the connecting rod.

[0010] Furthermore, a rack is provided on the support beam and arranged axially along the long blowing pipe, and a first gear is provided on the output shaft of the sports car. The first gear and the rack are meshingly connected to enable the sports car to move along the support beam.

[0011] Furthermore, a second gear is provided on the output shaft of the sports car, the long blow pipe is rotatably connected to the sports car, a gear ring is provided on the outer surface of the long blow pipe, and the gear ring is meshed with the second gear to enable the long blow pipe to rotate while the sports car moves along the support beam.

[0012] Furthermore, the long blowing pipeline includes an air source pipe, an inner pipe and an outer pipe, the inner pipe is connected to the air source through the air source pipe, the outer pipe is movably sleeved on the outside of the inner pipe and connected to the sports car, and the sports car drives the outer pipe of the long blowing pipeline to move in and out of the flue.

[0013] Further, the second driving member includes a motor module, a power module and a control module. The power module is electrically connected to the motor module and is used to serve as an energy supply component to power the motor module. The motor module drives the drive shaft to output driving force under the power supply of the power module. The second driving member is also provided with a local control button, and the local control button includes a local advance button and a local exit button. The control module is electrically connected to the power module and the local control button respectively, and is used to receive local mode instructions and remote mode instructions, and enter the local control mode and the remote control mode respectively according to the local mode instructions and the remote mode instructions, and, in the local control mode, when the local advance button is triggered, the power module is controlled to supply power to the motor module in a forward direction to drive the sports car to drive the long blowing pipe forward; when the local exit button is triggered, the power module is controlled to supply power to the motor module in a reverse direction to drive the sports car to drive the long blowing pipe to exit; in the remote control mode, when a remote advance signal is received, the power module is controlled to supply power to the motor module in a forward direction to drive the sports car to drive the long blowing pipe forward; when a remote exit signal is received, the power module is controlled to supply power to the motor module in a reverse direction to drive the sports car to drive the long blowing pipe to exit.

[0014] Furthermore, the device also includes a remote control, which is electrically connected to the control module and is used to send a remote forward signal and a remote exit signal to the control module. The control module is also used to obtain working status information of the motor module and send the working status information to the remote control. The remote control is provided with a display component for displaying the working status information.

[0015] Furthermore, a mode selection button is provided on the second driving member and / or the remote control, and the mode selection button includes a local mode button and a remote mode button. When the local mode button is triggered and the remote mode button is triggered, a local mode instruction and a remote mode instruction are respectively sent to the control module.

[0016] The present invention also provides a sootblowing system for a thermal power plant, comprising a sootblower, a long blowing pipe and the above-mentioned thermal power plant steam long blowing pipe driving device, wherein the long blowing pipe is connected to the air source outlet of the sootblower, and the thermal power plant steam long blowing pipe driving device is connected to the long blowing pipe and drives the long blowing pipe to enter and exit the flue to be sootblown axially.

[0017] The present invention also provides a method for driving a long-blowing steam pipeline in a thermal power plant, using the above-mentioned long-blowing steam pipeline driving device in a thermal power plant, and the method comprises the following steps:

[0018] In the case where the first driving member is able to provide driving force: the first driving member drives the sports car to move along the support beam to drive the long blowing pipe to enter / exit the flue;

[0019] In the case that the first driving member cannot provide driving force:

[0020] Connecting the second driving member to the tail end of the driving shaft of the first driving member;

[0021] The second driving member uses the driving shaft as a transmission component to drive the sports car to move along the supporting beam to drive the long blowing pipe to enter / exit the flue.

[0022] The thermal power plant steam long-blowing pipeline driving device of the present invention drives the long-blowing pipeline to enter and exit the flue along the axial direction by a sports car that moves and runs along the axial direction of the long-blowing pipeline, wherein the head end of the driving shaft of the first driving member is connected to the sports car, so that when the first driving member can provide driving force, the first driving member is used to provide driving force for the movement of the sports car, and the tail end of the driving shaft of the first driving member is detachably connected to the second driving member, and the second driving member is a driving member with its own energy supply component, so it does not need external energy supply and can output driving force. Therefore, when the first driving member cannot provide driving force, the first driving member is used as a transmission mechanism to provide driving force for the movement of the sports car through the second driving member.

[0023] Therefore, under normal working conditions, the first drive component is fully capable of providing driving force under the power supply of an external power supply. Under abnormal conditions, the first drive component directly serves as an intermediate transmission component, and the second drive component is not affected by electrical faults because it has its own power supply component, which enables the equipment to remain in normal operation for a certain period of time, providing time for the repair of electrical faults, and at the same time providing driving force for the long blowing pipe to safely exit the flue, avoiding deformation that is difficult to repair and reducing maintenance costs. This setting scheme enables the long blowing pipe to exit the flue in time even in abnormal conditions caused by sudden equipment power outages, electrical control system failures, motor failures, etc., without affecting the normal operation of the soot blowing system. At the same time, compared with the manual exit method of the staff, it improves the degree of operation automation, which not only saves time and effort, ensures soot blowing efficiency, but also further improves the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a steam long-blowing pipeline driving device for a thermal power plant in Embodiment 1 of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a connection assembly of a steam long-blow pipeline driving device for a thermal power plant in Example 1 of the present invention;

[0026] Figure 3 1 is a schematic structural diagram of a circular ring component of a steam long-blowing pipeline driving device for a thermal power plant in Example 1 of the present invention;

[0027] Figure 4 It is a structural schematic diagram of a bracket of a steam long-blowing pipeline driving device of a thermal power plant in Example 1 of the present invention;

[0028] Figure 5 This is a schematic structural diagram of a second driving member of a steam long-blowing pipeline driving device for a thermal power plant in Embodiment 1 of the present invention;

[0029] Figure 6 It is a structural schematic diagram of a limit plate of a steam long-blow pipeline driving device of a thermal power plant in Example 1 of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the casing of the steam long-blowing pipeline driving equipment of a thermal power plant in Example 1 of the present invention;

[0031] Figure 8 It is a structural schematic diagram of a signal exchange device of a steam long-blowing pipeline driving device of a thermal power plant in Embodiment 1 of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of a remote controller for a steam long-blow pipeline driving device in a thermal power plant in Example 1 of the present invention.

[0033] In the figure: 1. support beam; 11. connecting rod; 12. rack; 13. support frame; 14. bracket; 15. switch junction box; 2. sports car; 21. first gear; 3. first driving member; 31. driving shaft; 32. telescopic cable; 4. second driving member; 5. long blowing pipe; 51. air source pipe; 52. inner pipe; 53. outer pipe; 6. remote control; 7. signal exchange device; 8. connecting assembly; 81. sleeve; 82. bracket; 821. annular portion; 822. claw; 83. limit plate; 831. spring; 84. circular ring member. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0036] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] Example 1

[0039] like Figure 1 and Figure 5 As shown, the steam long-blowing pipe driving device of a thermal power plant in this embodiment is used to drive the long-blowing pipe 5 to enter and exit the flue along the axial direction, and includes a support beam 1, a sports car 2, a first driving member 3 and a second driving member 4. The support beam 1 is arranged along the axial direction of the long-blowing pipe 5. The first driving member 3 and the long-blowing pipe 5 are both connected to the sports car 2. The sports car 2 is movably connected to the support beam 1 along the arrangement direction of the support beam 1. The input end of the sports car 2 is connected to the head end of the driving shaft 31 of the first driving member 3, so that it moves along the support beam 1 under the drive of the first driving member 3 to drive the long-blowing pipe 5 to enter and exit the flue. The second driving member 4 is a driving member with an energy supply component, which can be detachably connected to the tail end of the driving shaft 31 of the first driving member 3. When the first driving member 3 cannot provide driving force, the driving shaft 31 is used as a transmission component to drive the sports car 2 to move along the support beam 1 to drive the long-blowing pipe 5 to enter and exit the flue.

[0040] The thermal power plant steam long-blow pipeline driving device of this embodiment drives the long-blow pipeline 5 to enter and exit the flue axially by the sports car 2 that moves axially along the long-blow pipeline 5, wherein the head end of the driving shaft 31 of the first driving member 3 is connected to the sports car 2, so that when the first driving member 3 can provide driving force, the first driving member 3 is used to provide driving force for the movement of the sports car 2, and the tail end of the driving shaft 31 of the first driving member 3 is detachably connected to the second driving member 4, and the second driving member 4 is a driving member with its own energy supply component, so it does not need external energy supply and can also output driving force, so that when the first driving member 3 cannot provide driving force, the first driving member 3 is used as a transmission mechanism to provide driving force for the movement of the sports car 2 through the second driving member 4.

[0041] Therefore, under normal working conditions, the first drive member 3 is fully capable of providing driving force under the power supply of an external power source. Under abnormal conditions, the first drive member 3 directly serves as an intermediate transmission component, and the second drive member 4 is not affected by electrical faults because it has its own power supply component, which enables the equipment to remain in normal operation for a certain period of time, providing time for the repair of electrical faults, and at the same time providing driving force for the long blowing pipe 5 to safely exit the flue, avoiding deformation that is difficult to repair and reducing maintenance costs. This setting scheme enables the long blowing pipe 5 to exit the flue in time even in abnormal conditions caused by sudden equipment power outages, electrical control system failures, motor failures, etc., without affecting the normal operation of the soot blowing system. At the same time, compared with the manual exit method of the staff, it improves the degree of operation automation, which not only saves time and effort, ensures soot blowing efficiency, but also further improves the safety of the operator.

[0042] And because the second drive member 4 may not output driving force under normal conditions and is detachably connected to the first drive member 3, the second drive member 4 may not be installed under normal conditions. When an abnormality occurs in the first drive member 3 of a certain long blowing pipe, the second drive member 4 is carried to the corresponding position by the operating and maintenance personnel and then installed. That is, the second drive member 4 is equivalent to a portable auxiliary exit device. A portable auxiliary exit device can meet the application of all sootblowing system drives in a power plant. It does not need to be installed on each sootblower. It can be installed at any time when needed and can be disassembled at any time and installed in time when needed. Its power source uses a battery to drive a motor to provide a power source. When a fault occurs, it can advance and retreat in time, so that the long blowing pipe can quickly exit the high-temperature area.

[0043] In this embodiment, Figures 2 to 7 As shown, the device also includes a connecting component 8, which includes a bracket 82 and a limit plate 83. The bracket 82 is a cylindrical structure with openings at both ends. One end is open and detachably connected to the outside of the first driving member 3, and is located on the side of the tail end of the driving shaft 31 of the first driving member 3. The other end is open and detachably connected to the limit plate 83. The second driving member 4 is installed inside the bracket 82, one end is connected to the first driving member 3, and the other end is limited by the limit plate 83.

[0044] Specifically, the first driving member 3 is provided with a circular ring component 84 on one side of the tail end of the driving shaft 31, and after the end opening of the bracket 82 is sleeved with the first driving member 3, the bracket 82 and the circular ring component 84 are fixed by bolts. This sleeve fixing method is convenient for installation and connection, and can quickly complete the installation, avoiding delays that cause the long blowing pipe 5 to be unable to exit the flue in time. At the same time, because it is sleeved on the outside of the first driving member 3 and the second driving member 4 is accommodated inside, the internal space directly provides a positioning reference for the installation of the second driving member 4, and the positioning connection is accurate and convenient. The limit plate 83 can be bolted to the end opening of the bracket 82, such as Figure 6 As shown, a spring 831 can also be provided on the surface of the limit plate 83 facing the second driving member 4, and the end of the spring 831 can push the tail of the second driving member 4. The elastic force applied by the spring 831 can ensure the floating docking of the second driving member 4 and the first driving member 3, and can compensate for the installation error of the rigid structure.

[0045] In this embodiment, Figure 4 As shown, the bracket 82 includes an annular portion 821 and a claw 822, and a plurality of claws 822 are provided, and each claw 822 is distributed at intervals around the axial direction of the bracket 82 to form a cylindrical structure with a strip groove on the outer surface, and one end of each claw 822 is connected to the annular portion 821, and the other end is connected to the limit plate 83 to circumferentially hold the second driving member 4 inside the bracket 82. This method of holding with the claws 822 allows the bracket 82 to have a certain radial activity margin, which is convenient for the installation of the second driving member 4, and can be fully held after the installation is completed to prevent the second driving member 4 from moving inside.

[0046] In this embodiment, the connection assembly 8 further includes a sleeve 81, the inner hole of the sleeve 81 is a polygonal cross-section inner hole, the output shaft of the second drive member 4 and the drive shaft 31 are both columnar structures with polygonal cross-sections, the output shaft of the second drive member 4 is connected to the drive shaft 31 and is sleeved and connected through the sleeve 81, and the shaft holes with polygonal cross-sections are connected to each other to ensure torque transmission. In this embodiment, the sleeve 81 is a square sleeve with a square inner hole, and the drive shaft 31 and the output shaft of the second drive member 4 are both square shafts.

[0047] In this embodiment, a connecting rod 11 is provided on the support beam 1 and is arranged axially along the long blowing pipe 5. Both ends of the connecting rod 11 are fixed on the support beam 1 body. There is a gap between the rod body and the support beam 1 body. The first driving member 3 is connected to an external power supply through a telescopic cable 32. The telescopic cable 32 is spirally shaped and wound on the connecting rod 11. The spiral spring-shaped telescopic cable 32 has a certain degree of elasticity to ensure that the sports car 2 can follow the movement, and there is no excess drooping cable to affect the movement of the sports car 2.

[0048] In this embodiment, a rack 12 is provided on the support beam 1 and arranged axially along the long blowing pipe 5 , and a first gear 21 is provided on the output shaft of the sports car 2 . The first gear 21 and the rack 12 are meshed and connected to enable the sports car 2 to move along the support beam 1 .

[0049] In this embodiment, a second gear is further provided on the output shaft of the sports car 2, and the long blowing pipe 5 is rotatably connected to the sports car 2, and a rotatable connection method such as a bearing can be used; a gear ring is provided on the outer surface of the long blowing pipe 5, and the gear ring is meshed with the second gear to rotate the long blowing pipe 5 while the sports car 2 moves along the support beam 1. The second gear and the gear ring can be bevel gears, and the specific installation position of the second gear and the first gear 21 on the output shaft of the sports car 2 can be selected according to actual conditions, which will not be described in detail here.

[0050] Specifically, when the sports car 2 is driven by the driving force of the driving shaft 31, the output shaft rotates so that the first gear 21 and the second gear rotate. In this process, the first gear 21 and the rack 12 are meshed so that the sports car 2 drives the long blowing pipe 5 to move linearly along the support beam 1, and the second gear and the ring gear are meshed so that the long blowing pipe 5 rotates. This meshing transmission mode allows the long blowing pipe 5 to rotate while entering and exiting the flue, which can more effectively avoid jamming.

[0051] In this embodiment, the long blowing pipe 5 includes an air source pipe 51, an inner pipe 52 and an outer pipe 53. The inner pipe 52 is connected to the air source through the air source pipe 51. The outer pipe 53 is movably sleeved on the outside of the inner pipe 52 and connected to the sports car 2. The sports car 2 drives the outer pipe 53 of the long blowing pipe 5 to move in and out of the flue. The sleeve connection structure can not only realize the follow-up of the long blowing pipe 5 and the sports car 2, but also ensure that the long blowing pipe 5 is connected to the air source.

[0052] In this embodiment, the second driving member 4 includes a motor module, a power module and a control module. The power module is electrically connected to the motor module and is used to serve as an energy supply component to supply power to the motor module. The power module can also be electrically connected to the control module to supply power to the control module. The motor module drives the drive shaft 31 to output a driving force under the power supply of the power module. The second driving member 4 is also provided with a local control button, and the local control button includes a local forward button and a local exit button. The control module is electrically connected to the power module and the local control button respectively, and is used to receive local mode instructions and remote mode instructions, and divide the local mode instructions and the remote mode instructions into two parts according to the local mode instructions and the remote mode instructions. Enter the local control mode and remote control mode separately, and, in the local control mode, when the local advance button is triggered, the control power module supplies power to the motor module in the forward direction, driving the sports car 2 to drive the long blowing pipe 5 forward; when the local exit button is triggered, the control power module supplies power to the motor module in the reverse direction, driving the sports car 2 to drive the long blowing pipe 5 to exit; in the remote control mode, when the remote advance signal is received, the control power module supplies power to the motor module in the forward direction, driving the sports car 2 to drive the long blowing pipe 5 forward; when the remote exit signal is received, the control power module supplies power to the motor module in the reverse direction, driving the sports car 2 to drive the long blowing pipe 5 to exit. That is, first enter the local mode or remote mode and then select the operation of advancing or exiting. This control method allows the operator to operate in a relatively far away safe area when it is inconvenient to operate at close range, and also ensures that when the remote operation cannot be performed, the local operation can be selected. Since the flue and other equipment are generally located in the upper area of ​​the coal-fired boiler, the ambient temperature is too high, and the risk factor around the equipment is high when a fault occurs, the operator can choose to operate in a safe area remotely.

[0053] In this embodiment, Figure 8 and Fig. 9 As shown, the device also includes a remote controller 6 and a signal exchange device 7. The signal exchange device 7 can receive and send instructions as a signal processing center. The remote controller 6 is electrically connected to the control module through the signal exchange device 7, and is used to send a remote forward signal and a remote exit signal to the control module. The control module is also used to obtain the working status information of the motor module and send the working status information to the remote controller 6. The remote controller 6 is provided with a display component for displaying the working status information. In this embodiment, the working status information includes the torque of the second drive member 4, and the torque can be calculated by the current signal size of the second drive member 4. The working status information can also include the power of the second drive member 4, the driving direction, whether the device is working normally, etc., and a corresponding sensor detection component can be set on the second drive member 4 and electrically connected to the control module to realize detection.

[0054] In this embodiment, the second driving member 4 and the remote controller 6 are both provided with mode selection buttons, which include a local mode button and a remote mode button. When the local mode button is triggered and the remote mode button is triggered, a local mode command and a remote mode command are respectively sent to the control module. That is, the operator selects the control mode by pressing the local mode button or the remote mode button.

[0055] Compared with conventional driving equipment, this embodiment additionally provides a portable auxiliary exit device for a long steam blowing pipeline in a thermal power plant, and relates to the technical field of safe operation of steam soot blower equipment in a thermal power plant. It includes a support beam 1, a rack 12, a first driving member 3, a sports car 2, a driving shaft 31, an inner tube 52, an outer tube 53, a telescopic cable 32, a steam source pipe 51, a support frame 13, a switch junction box 15, a bracket 14, a square sleeve 81, a second driving member 4, a bracket 82, a signal exchange device 7, and a remote controller 6.

[0056] Specifically, the equipment is supported by a support beam 1, which is made of a steel beam, and a rack 12 is installed under the main body of the support beam 1; the support beam 1 can also be provided with a support frame 13 and a bracket 14, and the support frame 13 is used to fix and support the beam body to avoid bending; the bracket 14 is sleeved outside the main body of the support beam 1, forming a frame structure, and the long blowing pipe 5 passes through the inside of the frame. Guide rollers can also be arranged inside the frame to enable the frame to support and guide the sootblowing pipe; the switch junction box 14 of the sootblowing controller of the sootblowing system where the long blowing pipe 5 is located is installed on the support beam 1, and the wiring and travel switch of the sootblowing controller are inside.

[0057] The equipment also includes a sports car 2, a first driving member 3 and a second driving member 4. The first driving member 3 adopts a driving motor with an input end, which is the tail end of the driving shaft 31. The driving motor is fixedly connected to the sports car 2. An external power supply provides power to the driving motor through a telescopic cable 32. The sootblowing steam passes through the steam source pipe 51 and enters the inner pipe 52 and the outer pipe 53 in turn. The second driving member 4 can adopt a driving motor with a battery. The second driving member 4 is connected to the first driving member 3 through a connecting assembly 8, wherein a square sleeve 81 connects the square handle of the driving motor behind the sports car 2 (i.e., the square shaft of the driving shaft 31) and the square handle of the portable auxiliary electric device (i.e., the output shaft of the second driving member 4); a circular ring component 84 is installed on the driving motor, so that the bracket 82 can be fixedly installed on the driving motor behind the sports car 2 for installing the second driving member 4, and a limiting plate 83 is installed at the tail of the bracket 82 in which the second driving member 4 is placed, and is fixed by tightening screws or bolts. The raised spring 831 device can apply a certain elastic force to the second driving member 4, so that the second driving member 4 can operate stably to prevent the equipment from being displaced during operation and damaging equipment parts.

[0058] When in action, the first gear 21 in the sports car 2 meshes with the rack 12, and the telescopic cable 32 provides power to the driving motor. Under normal working conditions, the motor drives the sports car 2 to move forward, and at the same time, the gear in the sports car 2 drives the bevel gear to rotate the steam sootblowing outer pipe. Among them, the support frame 13 supports the steel beam, and the bracket 14 plays a supporting and conducting role. When the steam sootblower is unable to perform the steam sootblowing pipeline exit task due to sudden equipment power failure, electrical control system failure, motor equipment failure, or mechanical failure of the steam sootblower itself, or the steam outer sootblowing pipe is bent and deformed, the second drive member 4 is used to exit the steam sootblowing pipeline.

[0059] The equipment also includes a signal exchange device 7 and a remote controller 6. The second drive member 4 is provided with on-site advance and on-site exit buttons to control the travel of the sports car. It is also provided with remote mode and on-site mode buttons to control the control and operation status of the electric device. The signal exchange device 7 can receive the instructions and signals of the remote controller 6 and transmit them to the second drive member 4, and at the same time feed back the working status information of the second drive member 4 to the remote controller 6 for display. That is, by starting the remote controller 6 to send signals and instructions, the signal exchange device 7 receives the action instruction and transmits the signal to the second drive member 4, thereby driving the sports car 2 to move. Through the remote controller instruction, the maintenance staff can control the travel of the long blowing pipe 5 of the soot blower at a safe distance, so that the long blowing pipe 5 can be exited safely and smoothly. In terms of signal transmission, wireless signal transmission is used, and the signal source transmission is stable.

[0060] When the long blowing pipe 5 of the soot blower is stuck in the flue during operation, the square sleeve 81 connects the drive shaft 31 and the output shaft of the second drive member 4, starts the second drive member 4, and the second drive member 4 is powered on and rotates, dragging the drive shaft 31 to drive the sports car 2 to move, and the long blowing pipe 5 is withdrawn from the boiler flue. This equipment is applied in actual production. When the steam soot blower fails and the soot blowing pipe cannot be withdrawn in time, the equipment device can be used to withdraw the soot blowing pipe, which is of great significance to reducing the equipment damage rate and improving work efficiency. Compared with the prior art, this equipment is mainly designed for the long blowing outer pipe of the steam soot blower in the thermal power plant to be unable to withdraw from the flue when it fails, and human intervention is required to withdraw the pipe from the flue as soon as possible. The equipment is simple to install, convenient for on-site maintenance work, requires fewer operators, saves time and effort, has high safety and reliability, can greatly improve the work efficiency of maintenance personnel, and avoids staying in the flue for a long time, and the pipe is locally heated and bent and deformed. Traditional manual operation requires 3 to 4 people to operate in turns, which is time-consuming and labor-intensive. Compared with traditional manual operation, this equipment only needs one person to operate and complete the long blowing pipeline withdrawal work of the steam soot blower. At the same time, the design of the remote control device improves the safety performance of this equipment.

[0061] Example 2

[0062] A sootblowing system for a thermal power plant in this embodiment includes a sootblower, a long blowing pipe 5 and the thermal power plant steam long blowing pipe driving device in Example 1. The long blowing pipe 5 is connected to the gas source outlet of the sootblower, and is used to guide the gas and use the gas to sootblow the flue. The thermal power plant steam long blowing pipe driving device is connected to the long blowing pipe 5 and drives the long blowing pipe 5 to axially enter and exit the flue to be sootblown.

[0063] Example 3

[0064] The method for driving a long steam blowing pipeline in a thermal power plant of this embodiment adopts the driving device for a long steam blowing pipeline in a thermal power plant in Embodiment 1, and the method comprises the following steps:

[0065] In the case where the first driving member 3 is able to provide driving force: the first driving member 3 drives the sports car 2 to move along the support beam 1 to drive the long blowing pipe 5 to enter / exit the flue;

[0066] When the first driving member 3 cannot provide driving force:

[0067] The second driving member 4 is connected to the tail end of the driving shaft 31 of the first driving member 3; specifically, the bracket 82 is fixedly installed at the position where the tail end of the driving shaft 31 of the first driving member 3 is set by bolts, and the second driving member 4 is installed on the bracket 82, wherein the driving shaft 31 and the output shaft of the second driving member 4 are connected by a square sleeve 81, and then the limiting plate 3 is installed to limit the second driving member 4;

[0068] The second driving member 4 uses the driving shaft 31 as a transmission component to drive the sports car 2 to move along the support beam 1 to drive the long blowing pipe 5 to enter / exit the flue. Specifically, the second driving member 4 and the remote controller 6 are both provided with a remote mode button and a local mode button. The control module controls the second driving member 4 to execute the action command according to the triggering conditions of the two buttons:

[0069] Solution 1: The remote mode button of the second driving member 4 / remote controller 6 is triggered, the control module enters the remote control mode, and the remote controller 6 is manually controlled to send a remote forward signal or a remote exit signal, which is transmitted to the second driving member 4 through the signal exchange device 7 to act, thereby driving the long blowing pipe 5 to act. At the same time, the signal exchange device 7 feeds back the working status information of the second driving member 4 to the remote controller 6;

[0070] Solution 2, the local mode button of the second drive member 4 / remote controller 6 is triggered, the control module enters the local control mode, and the second drive member 4 is activated by manually triggering the local advance button or the local exit button on the second drive member 4, thereby driving the long blow pipe 5 to move.

[0071] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A steam long blowing pipe driving device for a thermal power plant, used for driving the long blowing pipe (5) to enter and exit the flue along the axial direction, characterized in that: It comprises a support beam (1), a sports car (2), a first driving member (3) and a second driving member (4), The support beam (1) is arranged along the axial direction of the long blowing pipe (5). The first driving member (3) and the long blowing pipe (5) are both connected to the sports car (2). The sports car (2) is movably connected to the support beam (1) along the arrangement direction of the support beam (1), and the input end of the sports car (2) is connected to the head end of the driving shaft (31) of the first driving member (3) so that it moves along the support beam (1) under the drive of the first driving member (3) to drive the long blowing pipe (5) to enter and exit the flue. The second driving member (4) is a driving member with an energy supply component, and is detachably connected to the rear end of the driving shaft (31) of the first driving member (3). When the first driving member (3) is unable to provide driving force, the driving shaft (31) is used as a transmission component to drive the sports car (2) to move along the support beam (1), thereby driving the long blowing pipe (5) to enter and exit the flue.

2. The long steam blowing pipeline driving device for a thermal power plant according to claim 1, characterized in that: It also includes a connecting assembly (8), wherein the connecting assembly (8) includes a bracket (82) and a limiting plate (83). The bracket (82) is a cylindrical structure with two ends open. One end is open and can be detachably sleeved and connected to the outside of the first driving member (3) and is located on a side of the first driving member (3) where the rear end of the driving shaft (31) is provided. The other end is open and can be detachably connected to the limit plate (83). The second driving member (4) is installed inside the bracket (82), one end of which is connected to the first driving member (3) and the other end of which is limited by a limiting plate (83).

3. The steam long blowing pipeline driving device for a thermal power plant according to claim 2, characterized in that: The support (82) comprises an annular portion (821) and claws (822). A plurality of claws (822) are provided. The claws (822) are distributed at intervals around the axial direction of the support (82) to form a cylindrical structure with strip grooves on the outer surface. One end of each claw (822) is connected to the annular portion (821), and the other end is connected to the limiting plate (83) so as to circumferentially hold the second driving member (4) inside the bracket (82).

4. The steam long blowing pipeline driving device for a thermal power plant according to claim 2, characterized in that: The connecting assembly (8) further comprises a sleeve (81), wherein the inner hole of the sleeve (81) is a polygonal cross-section inner hole. The output shaft and the driving shaft (31) of the second driving member (4) are both columnar structures with polygonal cross-sections. The output shaft of the second driving member (4) is connected to the driving shaft (31) and is sleeve-connected via a sleeve (81).

5. The steam long blowing pipeline driving device for a thermal power plant according to claim 1, characterized in that: The support beam (1) is provided with a connecting rod (11) arranged along the axial direction of the long blowing pipe (5), the two ends of the connecting rod (11) are fixed to the support beam (1) body, and a gap exists between the rod body and the support beam (1) body. The first driving member (3) is connected to an external power source via a telescopic cable (32); the telescopic cable (32) is spirally shaped and wound around the connecting rod (11).

6. The steam long blowing pipeline driving device for a thermal power plant according to claim 1, characterized in that: The support beam (1) is provided with a rack (12) arranged axially along the long blowing pipe (5). A first gear (21) is provided on the output shaft of the sports car (2), and the first gear (21) is meshedly connected with the rack (12) to enable the sports car (2) to move along the support beam (1).

7. The steam long blowing pipeline driving device for a thermal power plant according to claim 6, characterized in that: The output shaft of the sports car (2) is also provided with a second gear. The long blowing pipe (5) is rotatably connected to the sports car (2), and a gear ring is provided on the outer surface of the long blowing pipe (5), and the gear ring is meshed with the second gear so that the long blowing pipe (5) can be rotated while the sports car (2) moves along the support beam (1).

8. The steam long blowing pipeline driving device for a thermal power plant according to claim 1 or 7, characterized in that: The long blowing pipeline (5) comprises an air source pipe (51), an inner pipe (52) and an outer pipe (53). The inner tube (52) is connected to the gas source through the gas source tube (51). The outer tube (53) is movably sleeved on the outside of the inner tube (52) and connected to the sports car (2). The sports car (2) drives the outer tube (53) of the long blowing pipe (5) to move in and out of the flue.

9. The steam long blowing pipeline driving device for a thermal power plant according to claim 1, characterized in that: The second driving member (4) comprises a motor module, a power module and a control module, The power module is electrically connected to the motor module and is used as a power supply component to supply power to the motor module. The motor module drives the drive shaft (31) to output driving force under the power supply of the power module. The second driving member (4) is also provided with a local control button, which includes a local forward button and a local exit button. The control module is electrically connected to the power module and the local control button, respectively, and is used to receive local mode instructions and remote mode instructions, and enter the local control mode and remote control mode respectively according to the local mode instructions and the remote mode instructions, and, In the local control mode, when the local advance button is triggered, the control power module supplies power to the motor module in the forward direction, driving the sports car (2) and the long blowing pipe (5) to advance; when the local exit button is triggered, the control power module supplies power to the motor module in the reverse direction, driving the sports car (2) and the long blowing pipe (5) to exit; In the remote control mode, when a remote advance signal is received, the power supply module is controlled to supply power to the motor module in the forward direction, thereby driving the sports car (2) and the long blowing pipe (5) to advance; when a remote exit signal is received, the power supply module is controlled to supply power to the motor module in the reverse direction, thereby driving the sports car (2) and the long blowing pipe (5) to exit.

10. The steam long blowing pipeline driving device for a thermal power plant according to claim 9, characterized in that: It also includes a remote controller (6), which is electrically connected to the control module and is used to send a remote forward signal and a remote exit signal to the control module. The control module is also used to obtain the working status information of the motor module and send the working status information to the remote controller (6). The remote controller (6) is provided with a display component for displaying the working status information.

11. The steam long blowing pipeline driving device for a thermal power plant according to claim 10, characterized in that: The second driving member (4) and / or the remote controller (6) is also provided with a mode selection button. The mode selection button includes a local mode button and a remote mode button. When the local mode button is triggered and the remote mode button is triggered, a local mode instruction and a remote mode instruction are respectively sent to the control module.

12. A soot blowing system for a thermal power plant, characterized in that: The invention comprises a soot blower, a long blowing pipeline (5) and a driving device for a long steam blowing pipeline of a thermal power plant according to any one of claims 1 to 11, The long blowing pipe (5) is connected to the air source outlet of the soot blower. The thermal power plant steam long blowing pipeline driving device is connected to the long blowing pipeline (5) and drives the long blowing pipeline (5) to enter and exit the soot blowing flue in the axial direction.

13. A method for driving a long steam blowing pipeline in a thermal power plant, characterized in that: Using the steam long blowing pipeline driving device for a thermal power plant according to any one of claims 1 to 11, the method comprises the following steps: When the first driving member (3) is able to provide driving force: the first driving member (3) drives the sports car (2) to move along the support beam (1) to drive the long blowing pipe (5) to enter / exit the flue; In the case where the first driving member (3) cannot provide driving force: Connecting the second driving member (4) to the rear end of the driving shaft (31) of the first driving member (3); The second driving member (4) uses a driving shaft (31) as a transmission component to drive the sports car (2) to move along the support beam (1) to drive the long blowing pipe (5) to enter / exit the flue.

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