A wear-resistant moving blade adjusting device

Abstract

The embodiment of the present disclosure discloses a wear-resistant moving blade adjustment device, which relates to the technical field of induced draft fans. The wear-resistant moving blade adjustment device includes: an oil pump, an adjustment unit, and a blade shaft; the oil pump is connected to the adjustment unit, and is used to provide high-pressure oil to the adjustment unit; the adjustment unit is connected to the blade shaft, and is used to drive the blade shaft to rotate based on the high-pressure oil to adjust the angle of the blade; the adjustment unit includes a sliding shoe; the surface of the sliding shoe is coated with surface grease, and the surface grease is molybdenum disulfide. By coating the molybdenum disulfide grease on the surface of the sliding shoe, the wear and friction coefficient are reduced, the anti-wear and friction reduction performance is improved, and the thermal stability and sealing of the grease are improved, so as to achieve better wear resistance and lubrication effect when adjusting the blade angle.

Description

Technical Field

[0001] The disclosed embodiments relate to the technical field of induced draft fans, and in particular to a wear-resistant moving blade adjusting device. Background Art

[0002] In the field of power machinery, the moving blade regulating device is a key component for regulating fluid flow and pressure. With the continuous development of industrial technology, higher requirements are placed on the wear resistance and lubrication performance of the moving blade regulating device to ensure its long-term stable operation.

[0003] At present, the movable blade adjustment device in the related art usually uses an oil pump to provide oil, and drives the blade shaft to rotate through the adjustment unit to adjust the angle of the blade. However, these devices often reduce the adjustment accuracy and even cause failures during long-term operation due to friction and wear. Summary of the invention

[0004] The disclosed embodiment provides a wear-resistant moving blade adjusting device.

[0005] In a first aspect, an embodiment of the present disclosure provides a wear-resistant moving blade adjustment device, the moving blade adjustment device comprising:

[0006] Oil pump, regulating unit and vane shaft;

[0007] The oil pump is connected to the regulating unit and is used to provide high-pressure oil to the regulating unit;

[0008] The adjusting unit is connected to the blade shaft and is used to drive the blade shaft to rotate based on high-pressure oil to adjust the angle of the blade;

[0009] The adjustment unit includes a sliding shoe;

[0010] The surface of the sliding shoe is coated with surface grease, and the surface grease is molybdenum disulfide.

[0011] In some embodiments, the material of the shoe includes tin, aluminum, iron, nickel, and manganese.

[0012] In some embodiments, the adjusting unit further comprises:

[0013] Adjustment ring and adjustment arm;

[0014] The adjusting ring is connected to the adjusting arm through a sliding shoe, and the adjusting ring is used to drive the adjusting arm to rotate through the sliding shoe.

[0015] In some embodiments, the adjusting unit further comprises:

[0016] Adjustment plate;

[0017] The adjusting ring comprises an inner adjusting ring and an outer adjusting ring;

[0018] The outer circle of the adjusting disk is fixed by the inner adjusting ring and the outer adjusting ring and clamps the sliding shoe. The adjusting disk is used to drive the inner adjusting ring, the outer adjusting ring and the sliding shoe to reciprocate along the transmission shaft direction.

[0019] In some embodiments, the axial hole of the sliding shoe is sleeved on the pin shaft of the adjusting arm to drive the adjusting arm to perform axial rotation in a direction perpendicular to the transmission shaft.

[0020] In some embodiments, one end of the blade shaft is connected to the adjustment arm, and the other end of the blade shaft is connected to the blade;

[0021] The blade shaft is used to rotate based on the rotation of the adjustment arm to adjust the angle of the blade.

[0022] In some embodiments, the adjustment disk includes:

[0023] First-stage adjustment disc and second-stage adjustment disc;

[0024] The first-stage adjusting disc and the second-stage adjusting disc are connected by a transmission shaft to drive the two-stage blades to switch synchronously.

[0025] In some embodiments, the adjusting unit further comprises:

[0026] Hydraulic cylinder;

[0027] The oil pump is connected to the hydraulic cylinder to provide high-pressure oil to the hydraulic cylinder to push the piston of the hydraulic cylinder to reciprocate;

[0028] The piston of the hydraulic cylinder is connected to the adjusting disk to drive the adjusting disk to move.

[0029] In some embodiments, the bucket adjusting device further comprises:

[0030] Sensors and control systems;

[0031] The sensor is connected to the control system, and the sensor is connected to the blade. The sensor is used to monitor the state of the blade and send the state of the blade to the control system.

[0032] In some embodiments, a control system is connected to the oil pump, and the control system is used to control the working state of the oil pump based on the blade state.

[0033] In summary, according to an embodiment of the present disclosure, a wear-resistant moving blade adjustment device is provided, including an oil pump, an adjustment unit and a blade shaft; the oil pump is connected to the adjustment unit for providing high-pressure oil to the adjustment unit; the adjustment unit is connected to the blade shaft for driving the blade shaft to rotate based on the high-pressure oil to adjust the angle of the blade; the adjustment unit includes a slipper; the surface of the slipper is coated with surface grease, and the surface grease is molybdenum disulfide. By coating the surface of the slipper with molybdenum disulfide grease, the wear and friction coefficient are reduced, the anti-wear and friction reduction performance is improved, and the thermal stability and sealing of the grease are improved, thereby achieving better wear resistance and lubrication effect when adjusting the blade angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present disclosure can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0035] Figure 1 is a structural schematic diagram of a wear-resistant moving blade regulating device according to an embodiment of the present disclosure;

[0036] Figure 2 It is a structural schematic diagram of a specific wear-resistant moving blade adjusting device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. The described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0038] It should be noted that, for the convenience of description, only the parts related to the relevant invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0039] It should be understood that the "system", "device", "unit" and / or "module" used in the present disclosure is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0040] As shown in the present disclosure and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0041] In the description of the embodiments of the present disclosure, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present disclosure, "multiple" means two or more than two.

[0042] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0043] Flowcharts are used in this disclosure to illustrate the operations performed by the system according to the embodiments of the present disclosure. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, the various steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0044] In the field of power machinery, the moving blade regulating device is a key component for regulating fluid flow and pressure. With the continuous development of industrial technology, higher requirements are placed on the wear resistance and lubrication performance of the moving blade regulating device to ensure its long-term stable operation.

[0045] At present, the movable blade adjustment device in the related art usually uses an oil pump to provide oil, and drives the blade shaft to rotate through the adjustment unit to adjust the angle of the blade. However, these devices often reduce the adjustment accuracy and even cause failures during long-term operation due to friction and wear.

[0046] In order to solve the problems in the related art, the present disclosure proposes a wear-resistant moving blade adjustment device, which significantly reduces the wear and friction coefficient and improves the anti-wear and friction reduction performance by coating molybdenum disulfide grease on the surface of the sliding shoe. At the same time, the molybdenum disulfide grease also improves the thermal stability and sealing of the grease, making the blade angle adjustment smoother and more stable, thereby achieving better wear resistance and lubrication effect, and extending the service life of the device.

[0047] refer to Figure 1 , Figure 1 The figure shows a schematic diagram of the structure of a wear-resistant moving blade adjusting device, which includes:

[0048] Oil pump 1, regulating unit 2 and vane shaft 3;

[0049] The oil pump 1 is connected to the regulating unit 2 and is used to provide high-pressure oil to the regulating unit 2;

[0050] The adjustment unit 2 is connected to the blade shaft 3 and is used to drive the blade shaft 3 to rotate based on high-pressure oil to adjust the angle of the blade;

[0051] The adjustment unit 2 includes a sliding shoe 21 ; the surface of the sliding shoe 21 is coated with surface grease, and the surface grease is molybdenum disulfide.

[0052] The present invention provides high-pressure oil to the adjusting unit 2 through an oil pump 1. The slipper 21 in the adjusting unit 2 (whose surface is coated with molybdenum disulfide surface grease to enhance wear resistance) uses the oil pressure to drive the blade shaft 3 to rotate, thereby accurately adjusting the angle of the blade to achieve wear-resistant adjustment of the moving blade.

[0053] The dropping point of the surface grease can reflect the upper limit of its use temperature. When the surface grease reaches the dropping point, it has lost its ability to adhere to the metal surface. In general, the surface grease should be used at a temperature of 20 to 30°C or lower below the dropping point. According to the operating environment temperature of the induced draft fan at 100 to 120°C, the dropping point of molybdenum disulfide is 194°C, and the maximum allowable temperature is 164°C. Therefore, the present invention selects molybdenum disulfide as the surface grease to form a protective coating on the working surface of the sliding shoe, thereby reducing the surface roughness of the working surface of the sliding shoe at the initial stage of wear.

[0054] In addition, the present disclosure can also limit the blade wobble, which refers to the dynamic deformation of the blade in the rotating machinery due to various reasons, usually called the blade runout. The blade wobble is the magnitude of the dynamic deformation of the blade during the rotation process. The blade wobble can reflect the slipper clearance, which is used to judge the degree of slipper wear. The larger the blade wobble, the larger the slipper clearance and the more serious the slipper wear. Therefore, the blade wobble in the present disclosure should be between 3 mm and 5 mm.

[0055] Specifically, for ease of understanding, the present disclosure also provides a specific wear-resistant moving blade condition device, such as Figure 2 shown.

[0056] In some embodiments, the material of the sliding shoe 21 includes tin, aluminum, iron, nickel and manganese. The purpose of selecting these materials in the present disclosure is to further improve the wear resistance, hardness and service life of the sliding shoe to adapt to different working environments and load requirements, thereby avoiding the relative hardness of the adjustment ring and the sliding shoe being too large, causing serious wear of the sliding shoe.

[0057] Specifically, the mass proportion of tin (Sn) in the material of the sliding shoe in the present disclosure is reduced, and aluminum (Al) with better wear resistance and good oxidation corrosion resistance is added; at the same time, the content of iron (Fe) is increased, and nickel (Ni) is newly added to further enhance the hardness and wear resistance of the alloy. Considering that low manganese (Mn) content is conducive to improving the electrochemical corrosion resistance of copper-based alloys, a small amount of manganese (Mn) is added to further improve the wear resistance of the sliding shoe.

[0058] In some embodiments, the adjustment unit 2 also includes: an adjustment ring 22 and an adjustment arm 23; the adjustment ring 22 and the adjustment arm 23 are connected by a sliding shoe 21, and the adjustment ring 22 is used to drive the adjustment arm 23 to rotate through the sliding shoe 21, that is, the adjustment ring 22 can drive the adjustment arm 23 to rotate by using the sliding shoe 21, thereby achieving adjustment of the blade angle.

[0059] In the process of adjusting the moving blades, the sliding shoe and the adjusting ring contact each other and produce relative friction movement. Since the relative friction movement needs to overcome the resistance caused by the uneven surface of the parts, the parts will be worn during the movement, so the roughness of the sliding shoe surface will affect the degree of friction movement. Based on the above reasons, the present disclosure uses a sliding shoe with a surface grease coated with molybdenum disulfide.

[0060] In some embodiments, the adjustment unit 2 also includes: an adjustment disk 24; the adjustment ring 22 includes an inner adjustment ring 221 and an outer adjustment ring 222; the outer circle of the adjustment disk 24 is fixed and clamped by the inner adjustment ring 221 and the outer adjustment ring 222 to hold the sliding shoe, and the adjustment disk 24 is used to drive the inner adjustment ring 221, the outer adjustment ring 222 and the sliding shoe 21 to reciprocate along the direction of the transmission shaft to further accurately adjust the blade angle.

[0061] In some embodiments, the shaft hole of the sliding shoe 21 is sleeved on the pin of the adjusting arm 23, which is used to drive the adjusting arm to rotate axially in a direction perpendicular to the transmission axis. This rotation method makes the adjustment of the blade angle more flexible and accurate.

[0062] In some embodiments, one end of the blade shaft 3 is connected to the adjustment arm 23, and the other end of the blade shaft 3 is connected to the blade; the blade shaft 3 is used to rotate based on the rotation of the adjustment arm 23 to adjust the angle of the blade.

[0063] In some embodiments, the adjustment disk 24 includes: a first-stage adjustment disk and a second-stage adjustment disk; the first-stage adjustment disk and the second-stage adjustment disk are connected by a transmission shaft to drive the two-stage blades to switch synchronously. That is, when the angle of the first-stage blade is adjusted, the angle of the second-stage blade will also be adjusted accordingly, thereby ensuring the coordination and stability of the entire moving blade adjustment device.

[0064] In some embodiments, the adjustment unit 2 also includes: a hydraulic cylinder 25; an oil pump 1 connected to the hydraulic cylinder 25, used to provide high-pressure oil to the hydraulic cylinder 25, pushing the piston of the hydraulic cylinder 25 to reciprocate; the piston of the hydraulic cylinder 25 is connected to the adjustment disk 24, used to drive the adjustment disk to move.

[0065] The hydraulic cylinder 25 is connected to the oil pump 1 and obtains the high-pressure oil provided by the oil pump 1. When the oil pump 1 provides high-pressure oil to the hydraulic cylinder 25, the piston of the hydraulic cylinder 25 will reciprocate. The piston is connected to the adjustment disk 24, so the movement of the piston will drive the movement of the adjustment disk 24, thereby achieving precise adjustment of the blade angle. This design not only improves the adjustment accuracy, but also makes the entire moving blade adjustment device have higher response speed and stability.

[0066] In some embodiments, the moving blade adjustment device further includes: a sensor 4 and a control system 5; the sensor 4 is connected to the control system 5, the sensor 4 is connected to the blade, and the sensor 4 is used to monitor the blade status and send the blade status to the control system.

[0067] In some embodiments, the control system 5 is connected to the oil pump 1 , and the control system 5 is used to control the working state of the oil pump 1 based on the state of the blades.

[0068] The present disclosure monitors the blade status (such as blade deformation, cracks, vibration status, and temperature) in real time through the sensor 4, and sends this information to the control system 5. The control system 5 can analyze the sensor data and make decisions, and then adjust the working state of the oil pump 1, such as flow and pressure, based on these decisions to achieve precise adjustment of the blade angle.

[0069] In the moving blade adjustment device, the sensor 4, the control system 5 and the oil pump 1 form a closed-loop control system. The sensor is responsible for collecting blade status information, the control system is responsible for analysis and decision-making, and the oil pump adjusts the working state according to the instructions of the control system, thereby ensuring the precise adjustment of the blade angle and the stable operation of the system. The efficiency and reliability of the moving blade adjustment device are improved.

[0070] In summary, the wear-resistant moving blade adjustment device disclosed in the present invention includes an oil pump, an adjustment unit and a blade shaft; the oil pump is connected to the adjustment unit for providing high-pressure oil to the adjustment unit; the adjustment unit is connected to the blade shaft for driving the blade shaft to rotate based on the high-pressure oil to adjust the angle of the blade; the adjustment unit includes a slipper; the surface of the slipper is coated with surface grease, and the surface grease is molybdenum disulfide. By coating the molybdenum disulfide grease on the surface of the slipper, the wear and friction coefficient are reduced, the anti-wear and friction reduction performance is improved, and the thermal stability and sealing of the grease are improved, thereby achieving better wear resistance and lubrication effect when adjusting the blade angle.

[0071] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0072] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0073] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0074] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0075] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0076] Computer readable media include permanent and non-permanent, removable and non-removable media, and can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0077] It will be appreciated by those skilled in the art that the embodiments of the present disclosure may be provided as methods, systems or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used, and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. The scope of the invention involved in the present disclosure is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) to form a technical solution.

Claims

1. A wear-resistant moving blade adjustment device, characterized in that: The moving blade adjustment device comprises: Oil pump, regulating unit and vane shaft; The oil pump is connected to the regulating unit and is used to provide high-pressure oil to the regulating unit; The adjusting unit is connected to the blade shaft and is used to drive the blade shaft to rotate based on the high-pressure oil to adjust the angle of the blade; The adjustment unit includes a sliding shoe; The surface of the sliding shoe is coated with surface grease, and the surface grease is molybdenum disulfide.

2. The moving blade adjustment device according to claim 1, characterized in that: Materials for skids include tin, aluminum, iron, nickel, and manganese.

3. The moving blade adjustment device according to claim 2, characterized in that: The adjustment unit also includes: Adjustment ring and adjustment arm; The adjusting ring is connected to the adjusting arm via the sliding shoe, and the adjusting ring is used to drive the adjusting arm to rotate via the sliding shoe.

4. The moving blade adjustment device according to claim 3, characterized in that: The adjustment unit also includes: Adjustment plate; The adjusting ring comprises an inner adjusting ring and an outer adjusting ring; The outer circle of the adjustment disk is fixed by the inner adjustment ring and the outer adjustment ring and clamps the sliding shoe. The adjustment disk is used to drive the inner adjustment ring, the outer adjustment ring and the sliding shoe to reciprocate along the transmission shaft direction.

5. The moving blade adjustment device according to claim 4, characterized in that: The axial hole of the sliding shoe is sleeved on the pin shaft of the adjusting arm, and is used to drive the adjusting arm to perform axial rotation in a direction perpendicular to the transmission shaft.

6. The moving blade adjustment device according to claim 5, characterized in that: One end of the blade shaft is connected to the adjusting arm, and the other end of the blade shaft is connected to the blade; The blade shaft is used to rotate based on the rotation of the adjustment arm to adjust the angle of the blade.

7. The moving blade adjustment device according to claim 4, characterized in that: The adjusting disk comprises: First-stage adjustment dial and second-stage adjustment dial; The first-stage adjusting disc and the second-stage adjusting disc are connected via a transmission shaft, and are used to drive the two-stage blades to switch synchronously.

8. The moving blade adjustment device according to claim 4, characterized in that: The adjustment unit also includes: Hydraulic cylinder; The oil pump is connected to the hydraulic cylinder and is used to provide high-pressure oil to the hydraulic cylinder to push the piston of the hydraulic cylinder to reciprocate; The piston of the hydraulic cylinder is connected to the adjusting disk and is used to drive the adjusting disk to move.

9. The moving blade adjustment device according to claim 1, characterized in that: The moving blade adjustment device also includes: Sensors and control systems; The sensor is connected to the control system, and the sensor is connected to the blade. The sensor is used to monitor the state of the blade and send the state of the blade to the control system.

10. The moving blade adjustment device according to claim 9, characterized in that: The control system is connected to the oil pump, and the control system is used to control the working state of the oil pump based on the blade state.

Images