A method and system for detecting a status of a genset

Abstract

The present application relates to wind turbine detection technical field, especially for a kind of method and system for detecting generator set state, including for gearbox oil return and horizontally placed oil pipe, filter being communicated with the output direction of oil pipe, gear pump being communicated with the output direction of filter, gear pump and output end are carried out to the oil inlet of gearbox interior, oil pipe is made of non-metal transparent material, abrasive grain capture assembly is arranged in the downstream direction of oil pipe, under the action of gravity and adsorption force, abrasive grain capture assembly can be sorted by size from upstream to downstream, and successively captured on the elastic transparent film inside oil pipe, realize the step-by-step distribution of abrasive grain, the present application does not need to sample lubricating oil, can realize the effective monitoring of abrasive grain in lubricating oil, to reflect the state of gear box, provide data support for the effectiveness of gear box overhaul.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind turbine generator set detection, in particular to a method and system for detecting the state of a generator set. BACKGROUND

[0002] The gearbox is an important power transmission device in the wind turbine generator set, and its operating state directly affects the reliability, availability and operating economy of the wind turbine generator set. The lubricating oil, as the lubricating and cooling medium of the wind turbine gearbox, reflects the fault state of the gearbox and affects the operation of the gearbox and the control of the whole machine.

[0003] The lubricating oil needs to be manually detected regularly, and the need for replacement is determined according to the detection results. If the lubricating oil is replaced too early, the operating and maintenance cost of the gearbox will increase, and if it is replaced too late, the parts of the gearbox will be damaged or potential faults will occur. Timely and accurate monitoring of the state of the lubricating oil helps to reduce the operating and maintenance cost of the gearbox and the probability of gearbox and whole machine failure.

[0004] The prior art usually uses common methods such as vibration and noise to monitor the gearbox, locates the faulty components through time domain, frequency domain and time-frequency domain analysis of the monitoring signals, and diagnoses the fault type. However, the failure of the gearbox is a nonlinear process, and the reasons for the failure are complex and diverse, and vibration and noise monitoring cannot make complete, accurate and timely judgments and warnings on the wear and failure of each part.

[0005] During the operation of the gearbox, the friction pairs are continuously worn, and metal particles will continuously release into the lubricating oil in different particle sizes, accelerating the wear of the gearbox parts in the form of abrasive particles, such as Figure 1 As described above, the abrasive particle form includes wear particles 1a, cutting particles 1b, spalling particles 1c and sliding particles 1d. By studying the size and morphology of the abrasive particles, the state of the lubricating oil can be understood, and the health of the gearbox can be indirectly obtained.

[0006] Therefore, in view of the above problems, a method and system for detecting the state of a generator set are provided, which can maximize the reduction of hysteresis, reduce the human factors and external interference of sampling and inspection, etc. SUMMARY

[0007] The purpose of the present application is to provide a method and system for detecting the state of a generator set, which can understand the state of the lubricating oil by studying the size and morphology of the abrasive particles, indirectly obtain the health of the gearbox, and maximize the reduction of hysteresis and reduce the human factors and external interference of sampling and inspection, etc.

[0008] To achieve the above purpose, the present application provides the following technical solutions:

[0009] A kind of system for detecting generator set state, including the oil pipe for gearbox oil return and horizontal placement, filter, filter output direction communication gear pump are communicated, gear pump is with output end to the oil inlet of gearbox interior, oil pipe is made of non-metallic transparent material, abrasive grain capture component is arranged in the downstream direction of oil pipe, under the action of gravity and adsorption force, abrasive grain capture component can be sorted by size from upstream to downstream, and is captured on the elastic transparent film inside oil pipe in turn, realize the step distribution of abrasive grain;

[0010] Abrasive grain capture component and the outside of oil pipe are provided with identification component, the slider capable of transverse sliding and inner pressure sheet are included, the side of inner pressure sheet towards oil pipe is coated with reflective coating, inner pressure sheet can seal the abrasive grain captured, the one end of slider towards oil pipe is fixedly connected with illuminating lamp and macro lens camera, under the illumination of illuminating lamp and the reflection of reflective coating, elastic transparent film and abrasive grain form high-contrast light-dark field, realize the acquisition of abrasive grain size and contour, realize online monitoring.

[0011] The present application does not need to sample lubricating oil, refers to flow sensor, by making the time of collection stage equal to the time of lubricating oil circulation once, avoid the problem of data atypical caused by sampling detection, cannot fully reflect the overall data problem of lubricating oil, can realize effective monitoring of abrasive grain in lubricating oil, thereby reflecting the state of gearbox, and provide data support for the effectiveness of gearbox overhaul;

[0012] The greater the abrasive grain has greater adsorption force and gravity, under the action of gravity and adsorption force, the present application can sort abrasive grain by size through abrasive grain capture component, and is captured on the elastic transparent film inside oil pipe in turn, realize the step distribution of abrasive grain, so that the proportion of abrasive grain diameter in different stages in the whole abrasive grain quantity can be obtained more directly and conveniently, and the identification component is combined, under the illumination of illuminating lamp and the reflection of reflective coating, elastic transparent film and abrasive grain form high-contrast light-dark field, realize the acquisition of abrasive grain size and contour, realize online monitoring;

[0013] As a kind of system for detecting generator set state of the present application, preferably, concentration deviation component is arranged in the upstream direction of oil pipe, and concentration deviation component can concentrate abrasive grain in the state lubricating oil flowing in oil pipe in the lower side of oil pipe and flow;

[0014] Concentration deviation component includes multiple lower tendency grooves and upper lifting slopes, lower tendency grooves are installed on upper, and upper lifting slopes are installed on lower, and lower tendency grooves and upper lifting slopes are fixedly connected with the inner side of oil pipe, and upper lifting slope is arranged in the downstream direction of lower tendency groove;As a kind of system for detecting generator set state of the present application, preferably, two lower tendency grooves adjacent in upstream and downstream directions are staggered.

[0015] After the above setting, when the lubricating oil flows through the plurality of down channels, the abrasive particles in the lubricating oil will move to the middle of the oil pipe under the guidance of the down channels, and the two down channels adjacent in the upstream and downstream directions are staggered, which can make most of the abrasive particles in the lubricating oil move downward, so that the abrasive particles flow through the action range of the subsequent electromagnet;

[0016] The up slope is installed downward and arranged in the downstream direction of the down channel, because in the viscous fluid, the flow rate of the middle position of the oil pipe is the fastest, the up slope can guide the abrasive particles flowing at the bottom end of the oil pipe upward, so that the abrasive particles are concentrated in a certain range above the electromagnet, facilitating the subsequent abrasive particles to be collected on the elastic transparent film under the action of gravity and the adsorption force of the electromagnet, preventing the uneven distribution of the abrasive particles caused by the premature adsorption of the abrasive particles too low or the late adsorption of the abrasive particles too high;

[0017] As a system for detecting the state of a generator set, preferably, the abrasive particle capturing assembly comprises a groove on the inner side of the bottom end of the oil pipe, the elastic transparent film is embedded in the inner side of the groove, the elastic transparent film is slightly lower than the upper edge of the groove, and the electromagnet is slidingly connected to the bottom end of the oil pipe downstream, and the electromagnet can generate an adsorption force on the abrasive particles when it is on the downside.

[0018] The abrasive particles are captured by the adsorption force generated by the electromagnet and the gravity, and the elastic transparent film can limit the abrasive particles attached thereto with a large friction force;

[0019] As a system for detecting the state of a generator set, preferably, the inner side of the oil pipe is rotatably connected with a connecting ring, the inner side of the connecting ring is fixedly connected with an inner ring, the left inner ring is slidingly connected with the up slope, the two ends of the inner pressure piece are fixedly connected with the two inner rings, the outer side of the oil pipe is rotatably connected with an outer ring, the inner side of the outer ring is composed of a magnet, the outer ring and the connecting ring form a magnetic attraction synchronous structure, and the identification assembly is fixedly arranged on the outer ring.

[0020] Under the above arrangement, the inner pressure piece can be rotated by the rotation of the inner ring, and the inner ring and the connecting ring form a magnetic attraction synchronous structure, so that the inner ring can be rotated by the rotation of the outer ring;

[0021] As a system for detecting the state of a generator set, preferably, in the initial position, the inner pressure piece is at the top end, the top end of the inner pressure piece is arranged on the upper and lower sides of the oil pipe respectively, the arc center angle of the inner pressure piece plus the arc center angle of the electromagnet is greater than 360°, and the arc center angle of the inner pressure piece is greater than 300°.

[0022] The identification assembly, the electromagnet and the inner pressure piece rotate synchronously, and because the arc center angle of the inner pressure piece plus the arc center angle of the electromagnet is greater than 360°, the inner pressure piece and the electromagnet overlap, which can ensure effective limiting of the abrasive particles on the elastic transparent film;

[0023] As a kind of system for detecting the state of generator set of the application, preferably, one end of the inner pressure sheet is fixedly connected with a fiber brush.

[0024] As a kind of system for detecting the state of generator set of the application, preferably, the outer side of one of the outer rings is toothed, a second motor is also fixedly connected in the cabin, the output shaft of the second motor is fixedly connected with a driving gear, the driving gear is engaged with the outer side of one of the outer rings, and the rotation of the outer rings is realized by the rotation of the second motor.

[0025] As a kind of system for detecting the state of generator set of the application, preferably, the identification assembly further comprises connecting plates, the connecting plates are respectively arranged on the two outer rings, a limiting rod is fixedly connected between the two connecting plates, a sliding block is slidably connected to the outer side of the limiting rod, a screw rod is rotatably connected between the two connecting plates, the outer side of the sliding block is helically connected to the inner side of the screw rod, a first motor is fixedly connected to one of the connecting plates, and the output end of the first motor is fixedly connected to one end of the screw rod, so that the sliding of the identification assembly on the surface of the elastic transparent film is realized by the rotation of the first motor.

[0026] The detection of abrasive particles on the entire elastic transparent film is realized by the sliding of the identification assembly.

[0027] A method for detecting the state of generator set, comprising the following steps:

[0028] Step one: collection stage, when the lubricating oil passes through the oil pipe, the abrasive particles will move close to the lower side of the center line of the oil pipe under the action of the concentration and deflection assembly, the electromagnet works, and under the action of gravity and adsorption force, the abrasive particle capturing assembly can sort the abrasive particles by size from upstream to downstream, and then capture them on the elastic transparent film inside the oil pipe, realizing the step-by-step distribution of the abrasive particles.

[0029] Step two: identification stage, after a fixed time of collection in step one, the electromagnet is powered off, the second motor works, and the outer ring and the inner ring rotate synchronously, when the inner pressure sheet can cover the groove, the abrasive particles are sealed on the elastic transparent film, in the groove, after the outer ring and the inner ring rotate 180°, the identification assembly reaches the lower side of the elastic transparent film, there is an oil layer in the groove under the inner pressure sheet, the oil layer is in a transparent state in the early stage, under the illumination of the illuminating lamp and the reflection of the reflective coating, the elastic transparent film and the abrasive particles form a high-contrast bright and dark field, and the macro lens camera realizes the acquisition of the size and contour of the abrasive particles, realizing online monitoring.

[0030] After the lubricating oil is used for a long time, the oil becomes turbid, the light transmission of the oil existing in the groove under the inner pressure sheet decreases, the light emitted by the illuminating lamp cannot smoothly reach the reflective coating to form a clear "bright field", and the turbidity parameter of the lubricating oil is provided.

[0031] Step three: reset, outer ring and inner ring continue to rotate 180° to reset, the fiber brush at the end of the inner compression sheet, the abrasive particles on the elastic transparent film are lifted, so that they can enter the filter along the flow direction.

[0032] Compared with the prior art, the present application has the following advantages:

[0033] 1. The system for detecting the state of a generator set does not need to sample lubricating oil, can effectively monitor abrasive particles in the lubricating oil, thereby reflecting the state of the gear box, and provides data support for the effectiveness of gear box maintenance, larger abrasive particles have larger adsorption force and gravity, under the action of gravity and adsorption force, the abrasive particle capturing assembly can sort the abrasive particles by size and sequentially capture them on the elastic transparent film inside the oil pipe, realizing step-by-step distribution of the abrasive particles, so that the proportion of abrasive particles of different stages in the entire number of abrasive particles can be obtained more directly and conveniently, and the identification assembly, under the illumination of the illuminating lamp and the reflection of the reflective coating, forms a high-contrast light and dark field between the elastic transparent film and the abrasive particles, realizes acquisition of the size and profile of the abrasive particles, and realizes online monitoring.

[0034] 2. The system for detecting the state of a generator set, the inner compression sheet can rotate by rotating the inner ring, the inner ring and the connecting ring form a magnetic attraction synchronous structure, the inner compression sheet can rotate by rotating the outer ring, in the initial position, the inner compression sheet is at the top end, the top end of the inner compression sheet is arranged at the upper and lower sides of the oil pipe, respectively, the arc center angle of the inner compression sheet plus the arc center angle of the electromagnet is equal to 360°, the arc center angle of the inner compression sheet is greater than 300°, the identification assembly, the electromagnet and the inner compression sheet rotate synchronously, and because the arc center angle of the inner compression sheet plus the arc center angle of the electromagnet is greater than 360°, the inner compression sheet and the electromagnet overlap, this arrangement can ensure effective limiting of abrasive particles on the elastic transparent film.

[0035] 3. The system for detecting the state of a generator set, the upward slope is installed below and arranged in the downstream direction of the lower groove, because in a viscous fluid, the flow velocity at the middle position of the oil pipe is the fastest, the upward slope can guide the abrasive particles flowing at the bottom end of the oil pipe upward, so that the abrasive particles are concentrated in a certain range above the electromagnet, facilitating subsequent collection of the abrasive particles on the elastic transparent film under the action of gravity and the adsorption force of the electromagnet, and preventing uneven step-by-step distribution caused by premature adsorption of the abrasive particles at too low a height or late adsorption of the abrasive particles at too high a height.

[0036] 4. The system for detecting the state of the generator set, the second motor works, the outer ring and the inner ring rotate synchronously, when the inner pressure piece can cover the groove, the abrasive particles are sealed on the elastic transparent film, in the groove, the electromagnet is powered off, after the outer ring and the inner ring rotate 180°, the identification assembly reaches the lower side of the elastic transparent film, under the illumination of the illuminating lamp and the reflection of the reflective coating, because the elastic transparent film is slightly lower than the groove, there is a very thin oil layer in the groove under the inner pressure piece, when the oil layer is very thin, it is also in a transparent state, because the abrasive particles are close to the elastic transparent film, the abrasive particles are dark in color, the light emitted by the illuminating lamp is reflected by the reflective coating to form a bright surface, the abrasive particles cannot effectively reflect to form a dark surface, the elastic transparent film and the abrasive particles form a high-contrast bright-dark field, the macro lens camera realizes the acquisition of the size and profile of the abrasive particles, and online monitoring is realized, after the lubricating oil is used for a long time, the oil becomes turbid, although the oil layer existing in the groove under the inner pressure piece is thin, the light transmission property has decreased a lot, the light emitted by the illuminating lamp cannot smoothly reach the reflective coating to form a bright field, and the decrease of the contrast in the bright-dark field can reflect the turbidity of the oil, and provide a turbidity parameter. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a schematic diagram of the abrasive particle type of the abrasive particle in the lubricating oil.

[0038] Figure 2 It is a schematic diagram of the installation position of the application in the lubricating oil circulating system of the gear box.

[0039] Figure 3 It is a schematic diagram of the installation structure inside the oil pipe of the application.

[0040] Figure 4 It is a schematic diagram of the installation structure inside the oil pipe of the application. Figure 4

[0041] Figure 5 It is a schematic diagram of the working effect of the centralized offset assembly inside the oil pipe of the application.

[0042] Figure 6 It is a schematic diagram of the two adjacent downstream grooves of the application.

[0043] Figure 7 It is a schematic diagram of the installation structure outside the oil pipe of the application.

[0044] Figure 8 It is a schematic diagram of the installation structure of the inner ring and the inner pressure piece of the application.

[0045] Figure 9 It is a schematic diagram of the appearance structure of the outer ring of the application.

[0046] Figure 10 It is a schematic diagram of the groove in the collection stage of the application.

[0047] ​Figure 11 Fig. 1 is a schematic diagram of the identification stage of the abrasive grains in the groove of the present application;

[0048] Figure 12 Fig. 2 is a schematic diagram of the enlarged structure at B in the present application. Figure 10

[0049] Fig. 1 is a schematic diagram of the identification stage of the abrasive grains in the groove of the present application;

[0050] 1, abrasive grain; 1a, worn abrasive grain; 1b, cutting abrasive grain; 1c, spalling abrasive grain; 1d, sliding abrasive grain; 2, gearbox; 3, oil pipe; 4, filter; 5, flow sensor; 6, gear pump; 7, sliding block; 8, screw rod; 9, limiting rod; 10, groove; 11, inner ring; 12, inner pressure sheet; 121, reflective coating; 13, illuminating lamp; 14, macro camera; 15, first motor; 16, second motor; 17, driving gear; 18, electromagnet; 19, fiber brush; 20, elastic transparent film; 21, connecting ring; 22, outer ring; 23, concentrated offset assembly; 231, lower trend groove; 232, upper ramp. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0052] Embodiment 1, please refer to Figures 2-11 The present application provides a technical solution:

[0053] A system for detecting the state of a generator set, comprising an oil pipe 3 for returning oil to a gearbox 2 and horizontally placed, a filter 4 in communication with the output direction of the oil pipe 3, and a gear pump 6 in communication with the output direction of the filter 4, wherein the gear pump 6 is used to supply oil to the inside of the gearbox 2, the oil pipe 3 is made of non-metallic transparent material, and an abrasive grain capturing assembly 23 is arranged downstream of the oil pipe 3, under the action of gravity and adsorption force, the abrasive grain capturing assembly can sort the abrasive grains 1 by size from upstream to downstream, and sequentially capture the abrasive grains 1 on the elastic transparent film 20 inside the oil pipe 3, thereby realizing the step-by-step distribution of the abrasive grains 1.

[0054] ​The abrasive particle capturing assembly and the outer side of the oil pipe 3 are provided with an identification assembly, the identification assembly comprises a slider 7 capable of sliding transversely and an inner pressure sheet 12, the inner pressure sheet 12 is coated with a reflective coating 121 towards one side of the oil pipe 3, the inner pressure sheet 12 can enclose the captured abrasive particles 1, one end of the slider 7 towards the oil pipe 3 is fixedly connected with an illuminating lamp 13 and a macro camera 14, under the illumination of the illuminating lamp 13 and the reflection of the reflective coating 121, the elastic transparent film 20 and the abrasive particles 1 form a high-contrast bright-dark field, the size and profile of the abrasive particles 1 are acquired, and online monitoring is realized.

[0055] The present application does not need to sample the lubricating oil, refers to the flow sensor, by making the time of the collection stage equal to the time of the lubricating oil circulating once, avoids the data atypical problem caused by sampling detection, cannot fully reflect the overall data problem of the lubricating oil, can realize effective monitoring of the abrasive particles 1 in the lubricating oil, thereby reflecting the state of the gear box 2, and providing data support for the effectiveness of the gear box 2 overhaul;

[0056] The larger the abrasive particle is, the greater the adsorption force and gravity are, under the action of gravity and adsorption force, the abrasive particle capturing assembly can sort the abrasive particles 1 by size and sequentially capture the abrasive particles 1 on the elastic transparent film 20 inside the oil pipe 3, the step-by-step distribution of the abrasive particles 1 is realized, thereby the proportion of the diameters of the abrasive particles in different stages in the entire number of the abrasive particles 1 can be directly and conveniently obtained, and the identification assembly is combined, under the illumination of the illuminating lamp 13 and the reflection of the reflective coating 121, the elastic transparent film 20 and the abrasive particles 1 form a high-contrast bright-dark field, the size and profile of the abrasive particles 1 are acquired, and online monitoring is realized;

[0057] Specifically, the centralizing and shifting assembly 23 is arranged in the upstream direction of the oil pipe 3, the centralizing and shifting assembly 23 can centralize the abrasive particles 1 in the oil pipe 3 in the flowing state lubricating oil in the middle and lower side of the oil pipe 3;

[0058] The centralizing and shifting assembly 23 comprises a plurality of downward grooves 231 and upward slopes 232, the downward grooves 231 are installed upwards, and the upward slopes 232 are installed downwards, the downward grooves 231 and the upward slopes 232 are fixedly connected with the inner side of the oil pipe 3, and the upward slopes 232 are arranged in the downstream direction of the downward grooves 231.

[0059] Specifically, two adjacent downward grooves 231 in the upstream and downstream directions are staggered.

[0060] After the above arrangement, when the lubricating oil flows through the plurality of downward grooves 231, the abrasive particles 1 in the lubricating oil move to the middle of the oil pipe 3 under the guidance of the downward grooves 231, the two adjacent downward grooves 231 in the upstream and downstream directions are staggered, so that most of the abrasive particles 1 in the lubricating oil are guided downward, and the abrasive particles 1 flow through the subsequent electromagnetic iron 18;

[0061] The upward slope 232 is arranged downstream of the lower chute 231 and is arranged at the lower side, because the flow rate of the abrasive particles 1 at the bottom end of the oil pipe 3 is the fastest in the viscous fluid, the upward slope 232 can guide the abrasive particles 1 at the bottom end of the oil pipe 3 upwards, so that the abrasive particles 1 are concentrated in a certain range above the electromagnet 18, and the subsequent abrasive particles 1 are collected on the elastic transparent film 20 under the action of gravity and the adsorption force of the electromagnet 18, thereby preventing the uneven distribution of the abrasive particles 1 caused by premature adsorption of the abrasive particles 1 at too low a height or late adsorption of the abrasive particles 1 at too high a height.

[0062] Specifically, the abrasive particle capturing assembly 23 includes a groove 10 at the inner side of the bottom end of the oil pipe 3 downstream, the elastic transparent film 20 is embedded in the inner side of the groove 10, the elastic transparent film 20 is slightly lower than the upper edge of the groove 10, and the electromagnet 18 is slidingly connected to the bottom end of the oil pipe 3 downstream, and the electromagnet 18 can generate an adsorption force on the abrasive particles 1 when it is at the lower side.

[0063] The abrasive particles 1 are captured by the adsorption force generated by the electromagnet 18 and the gravity, and the elastic transparent film 20 can limit the abrasive particles 1 attached thereto with a greater friction force.

[0064] Specifically, the inner side of the oil pipe 3 is rotatably connected to a connecting ring 21, the inner side of the connecting ring 21 is fixedly connected to an inner ring 11, the left inner ring 11 is slidingly connected to the upward slope 232, and the two ends of the inner pressure piece 12 are fixedly connected to the two inner rings 11. The outer side of the oil pipe 3 is rotatably connected to an outer ring 22, the inner side of the outer ring 22 is composed of a magnet, the outer ring 22 and the connecting ring 21 form a magnetic attraction synchronous structure, and the identification assembly is fixedly arranged on the outer ring 22. The identification assembly and the electromagnet 18 are arranged on the upper and lower sides of the outer ring 22, respectively.

[0065] Under the above arrangement, the inner pressure piece 12 can be rotated by the rotation of the inner ring 11, and the inner ring 11 and the connecting ring 21 form a magnetic attraction synchronous structure, so that the inner ring 11 can be rotated by the rotation of the outer ring 22.

[0066] Specifically, in the initial position, the inner pressure piece 12 is at the top end, the top end of the inner pressure piece 12 is arranged at the upper and lower sides of the oil pipe 3, respectively, the arc center angle of the inner pressure piece 12 plus the arc center angle of the electromagnet 18 is equal to 360°, and the arc center angle of the inner pressure piece 12 is greater than 300°.

[0067] The identification assembly, the electromagnet 18 and the inner pressure piece 12 rotate synchronously, and because the arc center angle of the inner pressure piece 12 plus the arc center angle of the electromagnet 18 is greater than 360°, the inner pressure piece 12 and the electromagnet 18 overlap, which can ensure effective limiting of the abrasive particles on the elastic transparent film 20.

[0068] The recognition stage, after the collection in step one lasts for a fixed time, the second motor 16 works, the outer ring 22 and the inner ring 11 rotate synchronously, when the inner pressing piece 12 can cover the groove 10, the abrasive grain 1 is sealed on the elastic transparent film 20, in the groove 10, the electromagnet 18 is powered off, after the outer ring 22 and the inner ring 11 rotate 180 DEG, the recognition assembly reaches the lower side of the elastic transparent film 20, under the illumination of the illuminating lamp 13 and the reflection of the reflective coating 121, because the elastic transparent film 20 is slightly lower than the groove 10, a very thin oil layer exists in the groove 10 under the inner pressing piece 12, the oil layer is in a transparent state when being very thin, because the abrasive grain 1 is close to the elastic transparent film 20, the abrasive grain 1 is dark, the light emitted by the illuminating lamp 13 is reflected by the reflective coating 121 to form a bright field, the abrasive grain 1 forms a dark field due to poor reflectivity, the elastic transparent film 20 and the abrasive grain 1 form a high-contrast bright-dark field, the close-up camera 14 realizes the acquisition of the size and profile of the abrasive grain 1, and realizes online monitoring;

[0069] When the lubricating oil is used for a long time, the oil becomes turbid, although the oil layer existing in the groove 10 under the inner pressing piece 12 is thin, the light transmission property has decreased a lot, the light emitted by the illuminating lamp 13 cannot reach the reflective coating 121 to form a bright field, and the decrease of the contrast in the bright-dark field can reflect the turbidity of the oil, and provide a turbidity parameter;

[0070] Specifically, one end of the inner pressing piece 12 is fixedly connected with a fiber brush 19, the fiber brush 19 is used for lifting the abrasive grain on the elastic transparent film 20, and the outer ring 22 can be repeatedly rotated.

[0071] Specifically, the outer side of one of the outer rings 22 is in a toothed ring shape, the cabin is further fixedly connected with the second motor 16, the output shaft of the second motor 16 is fixedly connected with a driving gear 17, the driving gear 17 is engaged with the outer side of one of the outer rings 22, and the rotation of the second motor 16 realizes the rotation of the outer ring 22.

[0072] Specifically, the recognition assembly further comprises a connecting plate 24, the connecting plate 24 is arranged on the two outer rings 22, the two connecting plates 24 are fixedly connected with a limiting rod 9, the outer side of the limiting rod 9 is slidably connected with a sliding block 7, the two connecting plates 24 are rotatably connected with a lead screw 8, the outer side of the sliding block 7 is screw-connected with the inner side of the lead screw 8, one of the connecting plates 24 is fixedly connected with a first motor 15, the output end of the first motor 15 is fixedly connected with one end of the lead screw 8, and the rotation of the first motor 15 realizes the sliding of the recognition assembly on the surface of the elastic transparent film 20.

[0073] The detection of the abrasive grain 1 on the entire elastic transparent film 20 is realized through the sliding of the recognition assembly;

[0074] The application further discloses a method for detecting the state of a generator set, and the steps are as follows:

[0075] Step one: collection stage, when the abrasive particles 1 pass through the oil pipe 3, they will move to the lower side of the center line of the oil pipe 3 under the action of the central deviation assembly 23. The electromagnet 18 works, and under the action of gravity and adsorption force, the abrasive particle capturing assembly can sort the abrasive particles 1 by size from upstream to downstream, and then capture them on the elastic transparent film 20 inside the oil pipe 3, realizing the step-by-step distribution of the abrasive particles 1;

[0076] Step two: identification stage, after a fixed time of collection in step one, the electromagnet 18 is powered off, the second motor 16 works, and the outer ring 22 and the inner ring 11 rotate synchronously. When the inner pressing piece 12 can cover the groove 10 to seal the abrasive particles on the elastic transparent film 20 in the groove 10, after the outer ring 22 and the inner ring 11 rotate 180°, the identification assembly reaches the lower side of the elastic transparent film 20, and the oil layer exists in the groove 10 under the inner pressing piece 12. The oil layer is in a transparent state in the early stage, and under the illumination of the illuminating lamp 13 and the reflection of the reflective coating 121, the elastic transparent film 20 and the abrasive particles 1 form a high-contrast bright and dark field, and the macro lens camera 14 realizes the acquisition of the size and contour of the abrasive particles 1, realizing online monitoring;

[0077] After the lubricating oil is used for a long time, the oil in the groove 10 under the inner pressing piece 12 becomes turbid, the light emitted by the illuminating lamp 13 cannot reach the reflective coating 121 smoothly to form a clear "bright field", and the turbidity parameter of the lubricating oil is provided;

[0078] Step three: reset, the outer ring 22 and the inner ring 11 continue to rotate 180° to realize reset, and the fiber brush 19 at the tail end of the inner pressing piece 12 lifts the abrasive particles 1 on the elastic transparent film 20, so that they can enter the filter 4 along the flow direction.

[0079] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for detecting the state of a generator set, comprising an oil pipe (3) for oil return of a gearbox (2) and horizontally placed, a filter (4) in communication with the output direction of the oil pipe (3), a gear pump (6) in communication with the output direction of the filter (4), the gear pump (6) being in oil inlet with the output end to the inside of the gearbox (2), characterized in that: The oil pipe (3) is made of non-metallic transparent material, and the abrasive particle capturing assembly is arranged in the downstream direction of the oil pipe (3). Under the action of gravity and adsorption force, the abrasive particle capturing assembly can sort the abrasive particles (1) by size from upstream to downstream and successively capture the abrasive particles (1) on the elastic transparent film (20) inside the oil pipe (3), so as to realize the step-by-step distribution of the abrasive particles (1). The outer side of the abrasive particle capturing assembly and the oil pipe (3) is provided with an identification assembly. The identification assembly includes a slider (7) capable of sliding transversely and an inner pressure sheet (12). The side of the inner pressure sheet (12) facing the oil pipe (3) is coated with a reflective coating (121). The inner pressure sheet (12) can enclose the captured abrasive particles (1). One end of the slider (7) facing the oil pipe (3) is fixedly connected with a light (13) and a macro camera (14). Under the illumination of the light (13) and the reflection of the reflective coating (121), the elastic transparent film (20) and the abrasive particles (1) form a high-contrast light and dark field, so as to realize the acquisition of the size and contour of the abrasive particles (1) and realize online monitoring.

2. A system for detecting the condition of a generator set according to claim 1, characterized in that: A concentration and deviation assembly is arranged in the upstream direction of the oil pipe (3). The concentration and deviation assembly can concentrate the abrasive particles (1) in the oil pipe (3) from the flowing state lubricating oil to the lower side of the oil pipe (3) for flowing. The concentration and deviation assembly includes a plurality of downward grooves (231) and upward slopes (232). The downward grooves (231) are installed on the top, and the upward slopes (232) are installed on the bottom. Both the downward grooves (231) and the upward slopes (232) are fixedly connected with the inner side of the oil pipe (3). The upward slopes (232) are arranged in the downstream direction of the downward grooves (231).

3. A system for detecting the status of a genset as claimed in claim 2, wherein: Two adjacent downward grooves (231) in the upstream and downstream directions are arranged staggered.

4. A system for detecting the state of a generator set according to any one of claims 1-3, characterized in that: The abrasive particle capturing assembly includes a groove (10) in the inner side of the bottom end of the downstream of the oil pipe (3). The elastic transparent film (20) is embedded in the inner side of the groove (10). The elastic transparent film (20) is slightly lower than the upper edge of the groove (10). The bottom end of the downstream of the oil pipe (3) is slidingly connected with an electromagnet (18). When the electromagnet (18) is on the lower side, it can generate an attractive force on the abrasive particles (1).

5. A system for detecting the status of a generator set according to claim 4, characterized in that: The inner side of the oil pipe (3) is rotatably connected with a connecting ring (21). The inner side of the connecting ring (21) is fixedly connected with an inner ring (11). The left inner ring (11) is slidingly connected with the upward slope (232). Both ends of the inner pressure sheet (12) are fixedly connected with two inner rings (11). The outer side of the oil pipe (3) is rotatably connected with an outer ring (22). The inner side of the outer ring (22) is composed of a magnet. The outer ring (22) and the connecting ring (21) form a magnetic attraction synchronous structure. The identification assembly is fixedly arranged on the outer ring (22). The identification assembly and the electromagnet (18) are arranged on the upper and lower sides of the outer ring (22), respectively.

6. A system for detecting the condition of a generator set as recited in claim 4, wherein: In the initial position, the inner pressure sheet (12) is at the top end. The top end of the inner pressure sheet (12) is arranged on the upper and lower sides of the oil pipe (3), respectively. The arc center angle of the inner pressure sheet (12) plus the arc center angle of the electromagnet (18) is greater than 360°. The arc center angle of the inner pressure sheet (12) is greater than 300°.

7. A system for detecting the condition of a generator set as recited in claim 5, wherein: One end of the inner pressure sheet (12) is fixedly connected with a fiber brush (19).

8. The system for detecting the state of a generator set according to claim 5, characterized in that: One of the outer ring (22) is toothed annular, cabin is also fixedly connected with the second motor (16), the output shaft of the second motor (16) is fixedly connected with drive gear (17), drive gear (17) and one of the outer ring (22) is engaged, through the rotation of the second motor (16) realizes the rotation of the outer ring (22).

9. The system for detecting the condition of a generator set according to claim 5, wherein: The identification assembly further comprises a connecting plate (24) arranged on each of the two outer rings (22), and a limiting rod (9) fixedly connected between the two connecting plates (24). The limiting rod (9) is slidably connected with a sliding block (7) on the outer side thereof. A screw rod (8) is rotatably connected between the two connecting plates (24). The screw rod (8) is screw-connected with the sliding block (7) on the inner side thereof. One of the connecting plates (24) is fixedly connected with a first motor (15). The output end of the first motor (15) is fixedly connected with one end of the screw rod (8). The rotation of the first motor (15) enables the identification assembly to slide on the surface of the elastic transparent film (20).

10. A method for detecting the state of a generator set using a system for detecting the state of a generator set as claimed in claim 8, characterized by, The steps are as follows: Step one: collection stage. When the lubricating oil passes through the oil pipe (3), the abrasive particles (1) will move close to the lower side of the center line of the oil pipe (3) under the action of the concentration and deviation assembly (23). The electromagnet (18) works. Under the action of gravity and adsorption force, the abrasive particle capturing assembly can sort the abrasive particles (1) by size from upstream to downstream, and then capture them on the elastic transparent film (20) on the inner side of the oil pipe (3), realizing the step-by-step distribution of the abrasive particles (1); Step two: identification stage. After a fixed time of collection in step one, the electromagnet (18) is powered off, and the second motor (16) works. The outer ring (22) and the inner ring (11) rotate synchronously. When the inner pressing piece (12) can cover the groove (10), the abrasive particles are sealed on the elastic transparent film (20) in the groove (10). After the outer ring (22) and the inner ring (11) rotate 180°, the identification assembly reaches the lower side of the elastic transparent film (20), the inner pressing piece (12) is lowered, and the oil layer exists in the groove (10). The oil layer is in a transparent state in the early stage. Under the illumination of the illuminating lamp (13) and the reflection of the reflective coating (121), the elastic transparent film (20) and the abrasive particles (1) form a high-contrast bright and dark field. The macro lens camera (14) realizes the acquisition of the size and contour of the abrasive particles (1), realizing online monitoring; After the lubricating oil is used for a long time, the oil becomes turbid, the oil existing in the groove (10) under the inner pressing piece (12) has reduced light transmission, and the light emitted by the illuminating lamp (13) cannot smoothly reach the reflective coating (121) to form a clear "bright field", providing the turbidity parameter of the lubricating oil; Step three: reset. The outer ring (22) and the inner ring (11) continue to rotate 180° to realize reset. The fiber brush (19) at the tail end of the inner pressing piece (12) lifts the abrasive particles (1) on the elastic transparent film (20), so that they can enter the filter (4) along the flow direction.

Images