Oil injection device, transmission system and wind generating set

Abstract

The invention relates to an oil injection device, a transmission system and a wind generating set, and the oil injection device comprises a main body pipe which is provided with a cavity, and an inlet hole and an outlet hole which are communicated with the cavity; the adjusting assembly is inserted into the cavity and comprises a force applying piece and an adjusting piece which are connected, the adjusting piece is provided with an oil collecting cavity and at least one hole set, the hole set comprises a plurality of adjusting holes which are distributed in the first direction and communicate with the oil collecting cavity, and the oil collecting cavity communicates with the inlet hole; lubricating fluid can enter the oil collecting cavity through the inlet hole, flows through one adjusting hole and then is sprayed out through the spraying hole. Wherein a difference exists between the hole diameters of the at least two adjusting holes, the hole diameter of the spraying hole is larger than or equal to the hole diameter of the largest adjusting hole in the hole set, the force applying piece is configured to drive the adjusting piece to move relative to the main body pipe in the first direction so as to adjust the adjusting holes, communicated with the spraying hole, of the hole set, and the first direction comprises one of the axial direction and the circumferential direction of the main body pipe. The self-blocking rate can be reduced, the cost is low, and the safety performance is good.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power, and in particular to an oil injection device, a transmission system and a wind power generator set. Background Art

[0002] In order to reduce the frictional resistance between two objects that rotate relative to each other, a bearing is usually set between the two. During the use of the bearing, in order to increase its life, it will be equipped with a corresponding oil spray device to lubricate, cool and clean it.

[0003] Taking wind power technology as an example, its transmission system is usually equipped with bearings, which are mainly lubricated with lubricating fluids such as lubricating oil and grease, and the lubricating fluid is sprayed to the corresponding position of the bearing through an oil spray device. The lubricating fluid is grease-like at low temperatures, which can easily cause blockage of the oil spray device. All related technologies require heating the oil spray device to reduce the probability of blockage and improve the smoothness of the oil spray device. However, it is difficult to achieve heating at the oil nozzle of a general oil spray device, which increases safety risks and costs. Summary of the invention

[0004] The embodiment of the present invention provides an oil injection device, a transmission system and a wind turbine generator set. The oil injection device can reduce its own blockage rate, has low cost and good safety performance.

[0005] On the one hand, according to an embodiment of the present invention, an oil injection device is proposed, including a main pipe, having a cavity, an inlet hole and an outlet hole connected to the cavity; an adjusting component, inserted in the cavity, the adjusting component including a force-applying member and an adjusting member connected to each other, the adjusting member having an oil collecting chamber and at least one group of hole groups, each hole group including a plurality of adjusting holes distributed along a first direction and respectively connected to the oil collecting chamber, the oil collecting chamber being connected to the inlet hole, the lubricating fluid being able to enter the oil collecting chamber from the inlet hole and flow through one of the adjusting holes and then be sprayed out from the outlet hole; wherein there is a difference between the apertures of at least two adjusting holes, the aperture of the outlet hole is greater than or equal to the aperture of the largest adjusting hole in the hole group, the force-applying member is configured to drive the adjusting member to move relative to the main pipe along the first direction to adjust the adjusting hole connected to the hole group and the outlet hole, the first direction includes one of the axial direction and the circumferential direction of the main pipe.

[0006] According to one aspect of an embodiment of the present invention, there are multiple ejection holes, and the multiple ejection holes are distributed along a first direction. The adjusting member is provided with a group of hole groups corresponding to each ejection hole, and along the first direction, the aperture change pattern of each adjusting hole of any two groups of holes is the same.

[0007] According to one aspect of the embodiment of the present invention, along the first direction, the diameters of the adjustment holes in the hole group tend to gradually increase.

[0008] According to one aspect of an embodiment of the present invention, the main body tube has a first port and a second port connected to the cavity along the axial direction, the inlet hole and the outlet hole are both located between the first port and the second port, the force-applying member is at least partially protruded from the first port and is dynamically sealed with the main body tube, and the second port or the oil collecting chamber is closed at one end axially away from the first port and the other end is open.

[0009] According to one aspect of an embodiment of the present invention, a sealing plate is provided at the second port, a collecting chamber is formed between the adjusting member and the sealing plate, the collecting chamber is configured to collect the lubricating fluid left from the gap between the adjusting member and the main tube, and a through hole connecting the collecting chamber and the oil collecting chamber is provided on the adjusting member.

[0010] According to one aspect of an embodiment of the present invention, the force-applying member includes a piston rod and a plurality of connecting columns. Along the axial direction, one end of the piston rod is slidably connected to the main body tube and the other end protrudes out of the main body tube. The plurality of connecting columns are spaced apart from each other around the axis of the piston rod and are respectively connected between the adjusting member and the piston rod.

[0011] According to one aspect of an embodiment of the present invention, the adjusting member is columnar and includes a first column segment and a second column segment distributed along the axial direction, the oil collecting chamber is arranged in the second column segment and penetrates the first column segment, the radial dimension of the second column segment is smaller than the radial dimension of the first column segment, the hole group is arranged in the first column segment, and a plurality of connecting columns are connected to the second column segment.

[0012] According to one aspect of an embodiment of the present invention, a main body tube comprises a first tube body and a second tube body, a cavity is arranged in the first tube body and penetrates the second tube body, an inlet hole is arranged in the second tube body, and an outlet hole is arranged in the first tube body; wherein, along the radial direction of the main body tube, a radial dimension of the first tube body is greater than a radial dimension of the second tube body, a step surface is formed between the first tube body and the second tube body, and the oil injection device further comprises a connecting seat, which is sleeved on the main body tube and fixed to the step surface along the axial direction; and / or, a tube wall thickness of the first tube body is less than a tube wall thickness of the second tube body.

[0013] On the other hand, according to an embodiment of the present invention, a transmission system is provided, comprising: a base having an axial hole; a main shaft inserted into the axial hole; a bearing sleeved on the main shaft, the main shaft and the base being rotatably connected via the bearing; the above-mentioned oil spraying device is arranged on the base and configured to spray lubricating fluid to the bearing.

[0014] According to another aspect of the embodiment of the present invention, the bearing is provided with an oil injection device on at least one side in the length direction of the main shaft, and a plurality of sockets extending along the radial direction of the main shaft are provided on the base. The plurality of sockets are spaced around the main shaft, and an oil injection device is provided in each socket. The portion of the main body tube provided with the spray hole extends from the socket into the shaft hole and is arranged toward the bearing, and the entry hole and the force-applying member protrude from the outer wall surface of the base.

[0015] According to another aspect of an embodiment of the present invention, the fuel injection device also includes a connecting seat, which is sleeved on the main pipe and connected to the main pipe, and a matching portion is provided on the base, the matching portion includes one of a protrusion and a groove, the shape of the matching portion matches the shape of the connecting seat and abuts against each other, and the matching portion and the connecting seat are detachably connected by fasteners.

[0016] According to another aspect of the embodiment of the present invention, the transmission system also includes a controller and a temperature collector connected to the base, the base is provided with a temperature measuring hole, and the temperature measuring hole is located between the temperature collector and the bearing; the temperature collector is configured to obtain temperature information of the bearing, and the controller is configured to control the distance that the force-applying member drives the adjusting member to move axially according to the temperature information, so as to adjust the adjusting hole that is connected to the hole group and the ejection hole.

[0017] In yet another aspect, a wind turbine generator set is provided according to an embodiment of the present invention, comprising the above-mentioned transmission system.

[0018] According to the oil injection device, transmission system and wind turbine generator set provided by the embodiments of the present invention, the oil injection device includes a main pipe and an adjusting component, the main pipe has a cavity and an inlet hole and an outlet hole connected to the cavity, the adjusting component is inserted in the cavity and includes a force-applying member and an adjusting member connected to each other, the adjusting member includes an oil collecting chamber and at least one group of hole groups, each hole group includes a plurality of adjusting holes distributed along a first direction and respectively connected to the oil collecting chamber, and the oil collecting chamber is connected to the inlet hole, the first direction includes one of the circumferential direction and the axial direction of the main pipe, so that the lubricating fluid can enter the oil collecting chamber from the inlet hole and flow through one of the adjusting holes and then be sprayed out from the outlet hole. Since there is a difference between the apertures of at least two adjusting holes, the aperture of the ejection hole is greater than or equal to the aperture of the largest adjusting hole in the hole group, so that when the force-applying member drives the adjusting member to move relative to the main tube along the first direction, the adjusting hole connected to the hole group and the ejection hole can be adjusted. When the ambient temperature of the oil injection device is too low, the force-applying member can be used to drive the adjusting member to move and make the adjusting hole with a larger aperture correspond to the ejection hole, thereby reducing the resistance of the lubricating fluid when it is ejected from the adjusting hole, thereby enabling the oil injection device to reduce its own blockage rate, and has the advantages of low cost and good safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] Figure 1 is a schematic structural diagram of a wind turbine generator set according to an embodiment of the present invention;

[0021] Figure 2 is a partial structural schematic diagram of a transmission system according to an embodiment of the present invention;

[0022] Figure 3It is a schematic structural diagram of an oil injection device according to an embodiment of the present invention.

[0023] in:

[0024] 100-transmission system; 200-tower; 300-nacelle; 400-impeller; 410-hub; 420-blade; 500-generator;

[0025] 1- Oil injection device;

[0026] 10-main tube; 10a-cavity; 10b-entry hole; 10c-ejection hole; 10d-first port; 10e-second port; 11-first tube body; 12-second tube body; 13-step surface;

[0027] 20-adjusting assembly; 21-force applying member; 211-piston rod; 212-connecting column; 213-sealing ring; 22-adjusting member; 221-oil collecting chamber; 222-hole group; 2221-adjusting hole; 223-through hole; 224-collecting port;

[0028] 22a-first column section; 22b-second column section; 30-sealing plate; 40-collecting chamber; 50-connecting seat;

[0029] 2-base; 201-axis hole; 202-jack; 203-matching part; 204-temperature measuring hole;

[0030] 3-spindle; 4-bearing; 5-temperature collector;

[0031] X-axial direction; Y-radial direction; Z-length direction; W-circumferential direction.

[0032] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity of the present invention; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0034] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structures of the fuel injection device, transmission system and wind turbine generator set of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] like Figure 1 As shown, one embodiment of the present application provides a wind turbine generator set, including a wind turbine foundation, a tower 200, a nacelle 300, a generator 500, a transmission system 100, and an impeller 400. The tower 200 is connected to the wind turbine foundation, the nacelle 300 is arranged at the top of the tower 200, the generator 500 is arranged in the nacelle 300, and the impeller 400 includes a hub 410 and a plurality of blades 420 connected to the hub 410, and the hub 410 of the impeller 400 is connected to the rotor of the generator 500 through the transmission system 100. When wind force acts on the blades 420, the impeller 400 can drive the rotor of the generator 500 to rotate relative to the stator through the transmission system 100, so as to convert wind energy into electrical energy, thereby meeting the power generation requirements of the wind turbine generator set.

[0036] like Figure 1 as well as Figure 2 As shown, in order to better connect the generator 500 with the hub 410 and ensure the conversion of wind energy, an embodiment of the present application also provides a transmission system 100, which includes a base 2, a bearing 4 and an oil spraying device 1. The base 2 has an axial hole 201, the main shaft 3 is inserted into the axial hole 201, the bearing 4 is sleeved on the main shaft 3, and the main shaft 3 is rotatably connected to the base 2 through the bearing 4. The oil spraying device 1 is arranged on the base 2 and is configured to spray lubricating fluid to the bearing 4 to lubricate the bearing 4. When the transmission system 100 is used in a wind turbine generator set, its base 2 can be connected to the nacelle 300, the main shaft 3 can be connected between the hub 410 and the generator 500, and when the wind acts on the impeller 400 and drives the impeller 400 to rotate, the impeller 400 can drive the main shaft 3 to rotate relative to the base 2, and then drive the rotor of the generator 500 to rotate relative to the stator through the main shaft 3. The oil injection device 1 can provide lubricating fluid to the bearing 4 to reduce the wear of the bearing 4 .

[0037] The lubricating fluid may include lubricating oil, grease, etc. Since the lubricating fluid is grease-like at low temperatures, it is easy to cause clogging of the oil injection device 1. In the related art, it is necessary to heat the oil injection device 1 to reduce the probability of clogging and improve the smoothness of oil injection. However, it is generally difficult to heat the oil injection nozzle of the oil injection device 1, which increases safety risks and costs.

[0038] Based on this, an embodiment of the present application further provides a new fuel injection device 1, which can be produced and sold as an independent product, and of course, can also be used in the transmission system 100 and serve as a component of the transmission system 100. The fuel injection device 1 can reduce its own blockage rate, has low cost and good safety performance.

[0039] like Figure 3 As shown, an oil injection device 1 provided by an embodiment of the present application includes a main body pipe 10 and an adjusting component 20. The main body pipe 10 has a cavity 10a, an inlet hole 10b and an outlet hole 10c connected to the cavity 10a. The adjusting component 20 is plugged into the cavity 10a. The adjusting component 20 includes a force-applying member 21 and an adjusting member 22 connected to each other. The adjusting member 22 has an oil collecting cavity 221 and at least one group of hole groups 222. Each hole group 222 includes a plurality of adjusting holes 2221 distributed along a first direction and respectively connected to the oil collecting cavity 221. The oil collecting cavity 221 is connected to the inlet hole 10b. The lubricating fluid can enter the oil collecting cavity 221 from the inlet hole 10b and flow through one of the adjusting holes 2221 before being sprayed out from the outlet hole 10c. Among them, there is a difference between the apertures of at least two adjustment holes 2221, the aperture of the ejection hole 10c is greater than or equal to the aperture of the largest adjustment hole 2221 in the hole group 222, and the force-applying member 21 is configured to drive the adjustment member 22 to move relative to the main tube 10 along a first direction to adjust the adjustment hole 2221 connected to the hole group 222 and the ejection hole 10c, and the first direction includes the axial direction X and the circumferential direction W of the main tube 10.

[0040] The inlet hole 10b and the outlet hole 10c provided on the main body tube 10 can be located on the same side of the main body tube 10 in the radial direction Y, and of course, can also be located on the opposite sides of the main body tube 10 in the radial direction Y.

[0041] The number of the spray hole 10c included in the main body tube 10 can be one, or more than two, and can be specifically set according to the area of ​​the bearing 4 to be lubricated.

[0042] The adjusting member 22 can be partially inserted into the cavity 10a of the main tube 10 and has the freedom of movement relative to the main tube 10 in the axial direction X or the circumferential direction W. The adjusting member 22 can be provided with one group of hole groups 222, and of course, more than two groups of hole groups 222 can be provided, which can be determined according to the number of the ejection holes 10c.

[0043] The number of adjustment holes 2221 included in each hole group 222 may be two, three or more, and no specific number is limited here. When the number of adjustment holes 2221 included in the hole group 222 is greater than or equal to three, the apertures of two of the adjustment holes 2221 may differ. Of course, the apertures of any two adjustment holes 2221 in the same hole group 222 may differ.

[0044] The adjusting member 22 may be provided with a collecting port 224 connected to the oil collecting chamber 221. The collecting port 224 may be directly or indirectly connected to the entry hole 10b. For example, the lubricating fluid entering through the entry hole 10b may be guided to the collecting port 224 and then into the oil collecting chamber 221 through a guide tube. Of course, the lubricating fluid entering through the entry hole 10b may first enter the cavity 10a and then fall into the oil collecting chamber 221 through the collecting port 224.

[0045] The force applying member 21 is configured to drive the adjusting member 22 to either move or rotate relative to the main body tube 10 along a first direction.

[0046] An embodiment of the present application provides an oil injection device 1, wherein a main body tube 10 has a cavity 10a, an inlet hole 10b and an outlet hole 10c connected to the cavity 10a, an adjusting component 20 is inserted in the cavity 10a and includes a force-applying member 21 and an adjusting member 22 connected to each other, the adjusting member 22 includes an oil collecting chamber 221 and at least one group of hole groups 222, each hole group 222 includes a plurality of adjusting holes 2221 distributed along a first direction and respectively connected to the oil collecting chamber 221, and the oil collecting chamber 221 is connected to the inlet hole 10b, so that the lubricating fluid can enter the oil collecting chamber 221 from the inlet hole 10b and flow through one of the adjusting holes 2221 before being sprayed out from the outlet hole 10c. Since there is a difference between the apertures of at least two adjusting holes 2221, the aperture of the ejection hole 10c is greater than or equal to the aperture of the largest adjusting hole 2221 in the hole group 222, so that when the force-applying member 21 drives the adjusting member 22 to move relative to the main tube 10 in the axial direction X or the circumferential direction W, the adjusting hole 2221 connected to the ejection hole 10c in the adjusting hole group 222 can be adjusted. When the ambient temperature of the oil injection device 1 is too low, the adjusting member 22 can be driven by the force-applying member 21 to move and make the adjusting hole 2221 with a larger aperture correspond to the ejection hole 10c, thereby reducing the resistance of the lubricating fluid when it is ejected from the adjusting hole 2221, thereby enabling the oil injection device 1 to reduce its own blockage rate, and has the advantages of low cost and good safety performance.

[0047] At the same time, the oil injection device 1 adopts the above-mentioned structural form, and the flow rate of the lubricating fluid injected by the oil injection device 1 to the position where the bearing 4 is located can be adjusted as needed. For example, when the bearing 4 is running at a low speed, the amount of lubricating fluid it needs does not need to be too high, and the supply of lubricating fluid entering through the inlet hole 10b can be reduced. However, when the lubricating fluid is reduced, the pressure will also decrease accordingly. The reduction in the amount of oil sprayed will result in the failure to spray to various lubrication positions on the bearing 4 due to the insufficient injection length. The adjusting member 22 can be driven by the force member 21 to move in the axial direction X or the circumferential direction W, so that the adjusting hole 2221 with a smaller aperture is arranged opposite to the ejection hole 10c, and the radial size of the adjusting hole 2221 opposite to the ejection hole 10c is reduced. The increase in the ejection resistance of the lubricating fluid will increase the ejection distance of the lubricating fluid, so that the purpose of lubricating the bearing 4 is achieved while reducing the pressure.

[0048] When the temperature of the bearing 4 is too high, it means that the friction is serious and the lubrication strength needs to be increased. At this time, the force-applying member 21 can be used to control the adjustment member 22 to move in the axial direction X or the circumferential direction W and make the adjustment hole 2221 with a larger aperture relative to the spray hole 10c, so that the flow rate of the lubricating fluid sprayed to the position of the bearing 4 in the same time is increased, thereby increasing the lubrication of the bearing 4. In other words, the oil spray device 1 provided in one embodiment of the present application can also change the position of the adjustment member 22 as needed according to the flow rate of the lubricating fluid required by the bearing 4, which can not only achieve the purpose of saving lubricating fluid, but also ensure the lubrication effect and reduce the damage to the bearing 4.

[0049] In order to better understand the oil injection device 1 provided in one embodiment of the present application, the following will take the first direction including the axial direction X of the main body pipe 10 as an example for illustration.

[0050] like Figure 3 As shown, in some optional embodiments, an embodiment of the present application provides an oil injection device 1, wherein the number of spray holes 10c is multiple, and the multiple spray holes 10c are distributed along the axial direction X, and the adjusting member 22 is respectively provided with a group of hole groups 222 corresponding to each spray hole 10c, and along the axial direction X, the aperture change pattern of each adjusting hole 2221 of any two groups of hole groups 222 is the same.

[0051] Since the bearing 4 needs multi-point lubrication during operation, for example, the inner ring, outer ring and cage all need lubrication by lubricating fluid, therefore, the oil spray device 1 provided in one embodiment of the present application can ensure the multi-point lubrication needs of the bearing 4 waiting for lubrication parts by providing multiple spray holes 10c. At the same time, by providing each spray hole 10c with a corresponding hole group 222, it can avoid clogging of each spray hole 10c under low temperature and other environmental conditions.

[0052] At the same time, since the working environment of each ejection hole 10c of the oil injection device 1 is basically the same, that is, when one of the ejection holes 10c is at risk of clogging due to low temperature, the remaining ejection holes 10c are also at risk of clogging. Therefore, the oil injection device 1 provided by an embodiment of the present application, by limiting the change law of the aperture of each adjustment hole 2221 of any two groups of holes 222 along the axial direction X to be the same, the adjustment holes 2221 corresponding to each ejection hole 10c can be adjusted synchronously. For example, when the temperature is too low and the aperture of the adjustment hole 2221 corresponding to the ejection hole 10c needs to be increased, the adjustment member 22 can be driven by the force member 21 to move along the axial direction X, and each ejection hole 10c can be synchronously adjusted to correspond to the adjustment hole 2221 with a larger aperture. When the temperature of the bearing 4 is low, each ejection hole 10c can also be synchronously adjusted to correspond to the adjustment hole 2221 with a smaller aperture, which can simplify the structure of the adjustment member 22 and make the adjustment convenient and quick.

[0053] In some optional embodiments, in the oil injection device 1 provided by one embodiment of the present application, along the axial direction X, the apertures of the respective adjustment holes 2221 of the hole group 222 tend to gradually increase.

[0054] Along the axial direction X of the main tube 10, the apertures of the adjusting holes 2221 of each hole group 222 can be gradually increased from bottom to top. Of course, the apertures of the adjusting holes 2221 of each hole group 222 can also be gradually increased from top to bottom.

[0055] Since the force-applying member 21 can drive the adjusting member 22 to move relative to the main tube 10 along the axial direction X, through the above-mentioned arrangement, the adjusting member 22 can gradually increase the aperture of the adjusting hole 2221 corresponding to the ejection hole 10c during the movement along the axial direction X, which is convenient for controlling the movement of the adjusting member 22 and can reduce the moving distance of the adjusting member 22 during the adjustment process.

[0056] In some optional embodiments, an embodiment of the present application provides an oil injection device 1, in which the main body tube 10 has a first port 10d and a second port 10e connected to the cavity 10a along the axial direction X, the inlet hole 10b and the outlet hole 10c are both located between the first port 10d and the second port 10e, the force-applying member 21 is at least partially protruded from the first port 10d and is dynamically sealed with the main body tube 10, and the second port 10e or the oil collecting chamber 221 is closed at one end away from the first port 10d in the axial direction X and the other is open.

[0057] Dynamic seal can be understood as: the seal between relatively moving parts in a machine (or equipment). The dynamic seal cooperation between the adjusting member 22 and the main tube 10 can be understood as the two having relative freedom of movement, and the two can ensure sealing during relative movement to prevent the lubricating fluid from flowing out of the first port 10d.

[0058] The second port 10e may be closed at one end away from the first port 10d in the axial direction X, and in this case, the oil collecting chamber 221 may be opened at one end away from the first port 10d in the axial direction X. Of course, the second port 10e may also be opened at one end away from the first port 10d in the axial direction X, and in this case, the oil collecting chamber 221 may be closed at one end away from the first port 10d in the axial direction X.

[0059] An oil injection device 1 provided in an embodiment of the present application facilitates driving the force-applying member 21 and can reduce the probability of leakage of the lubricating fluid by making the force-applying member 21 at least partially protrude from the first port 10d and cooperate with the main tube 10 in a dynamic seal. At the same time, by making the second port 10e or the oil collecting chamber 221 closed at one end away from the first port 10d in the axial direction X and the other end open, it can ensure the smoothness of the movement of the entire regulating component 20 in the main tube 10 and reduce the movement resistance.

[0060] In some optional embodiments, in an oil injection device 1 provided by an embodiment of the present application, a sealing plate 30 is sealed at the second port 10e, and a collecting chamber 40 is formed between the adjusting member 22 and the sealing plate 30, and the collecting chamber 40 is configured to collect the lubricating fluid left from the gap between the adjusting member 22 and the main tube 10, and a through hole 223 connecting the collecting chamber 40 and the oil collecting chamber 221 is provided on the adjusting member 22.

[0061] The sealing plate 30 and the main pipe 10 may be connected by welding or an integral structure. The through hole 223 may penetrate the bottom wall of the adjusting member 22 to connect the collecting chamber 40 with the oil collecting chamber 221 .

[0062] The oil spray device 1 provided in one embodiment of the present application can prevent the lubricating fluid from flowing out of the second port 10e by setting a sealing plate 30 and closing the second port 10e. The collection chamber 40 formed by the closed enclosure can collect the lubricating fluid leaking between the adjusting member 22 and the inner wall of the main tube 10, which can reduce the pollution of the equipment where the oil spray device 1 is located by the leakage of the lubricating fluid. At the same time, the setting of the through hole 223 can reduce the resistance borne by the adjusting member 22 when moving along the axial direction X, and can also guide the lubricating fluid collected in the collection chamber 40 to the oil collection chamber 221 through the through hole 223 during the process of the adjusting member 22 compressing the collection chamber 40 to be reused, thereby improving the utilization rate of the lubricating fluid and reducing the lubrication cost.

[0063] In some optional embodiments, an embodiment of the present application provides an oil injection device 1, wherein the force-applying member 21 includes a piston rod 211 and a plurality of connecting columns 212. Along the axial direction X, one end of the piston rod 211 is slidably connected to the main body tube 10 and the other end protrudes out of the main body tube 10. The plurality of connecting columns 212 are spaced apart from each other around the axis of the piston rod 211 and are respectively connected between the adjusting member 22 and the piston rod 211.

[0064] An oil injection device 1 provided in an embodiment of the present application, wherein the force-applying member 21 adopts the above-mentioned structural form, when the working environment of the oil injection device 1 is at a low temperature and the viscosity of the lubricating fluid is relatively high, and the viscosity of the lubricating fluid in the lubricating pipeline is very high after shutdown, in order to lubricate the bearing 4, a very high pressure is required to open up the lubricating fluid through high pressure, and the pressure provided to the system is limited. When the system pressure reaches the maximum value of the system and the pipeline still cannot be opened, the piston rod 211 can be adjusted to move the piston rod 211 from the direction of the first port 10d to the direction of the second port 10e, thereby squeezing the cavity 10a and further increasing the internal pressure (piston principle).

[0065] Optionally, along the first direction and from the first port 10d to the second port 10e, the apertures of the multiple adjustment holes 2221 of each hole group 222 can be gradually increased, whereby when the piston rod 211 moves toward the side where the first port 10d is located, the adjustment holes 2221 with larger apertures can be made to be opposite to the ejection hole 10c, thereby further reducing resistance and ensuring the purpose of ejecting the lubricating fluid.

[0066] Optionally, in order to improve the sealing performance, a sealing ring 213 is provided on each piston rod 211 to improve the sealing level between the piston rod 211 and the main body tube 10 .

[0067] At the same time, the arrangement of the multiple connecting columns 212 of the force-applying member 21 can ensure the connection between the piston rod 211 and the adjusting member 22 and the driving demand of the adjusting member 22. At the same time, since the multiple connecting columns 212 are spaced apart, the obstruction of the force-applying member 21 to the lubricating fluid can be reduced when the lubricating fluid enters, so that the lubricating fluid can smoothly enter the oil collecting chamber 221 to ensure the lubrication demand.

[0068] Optionally, the number of the connecting columns 212 may be two, three or more, and the multiple connecting columns 212 may be spaced and evenly arranged in the circumferential direction of the main body tube 10. Through the above arrangement, it is possible to ensure that when the piston rod 211 drives the adjusting member 22 to move along the axial direction X, the adjusting member 22 is subjected to relatively uniform force at various locations, thereby avoiding the occurrence of movement jamming caused by bearing an eccentric load, and ensuring smooth adjustment.

[0069] In some optional embodiments, an embodiment of the present application provides a fuel injection device 1, wherein the adjusting member 22 is columnar and includes a first column segment 22a and a second column segment 22b distributed along the axial direction X, the oil collecting chamber 221 is arranged in the second column segment 22b and penetrates the first column segment 22a, the radial dimension of the second column segment 22b is smaller than the radial dimension of the first column segment 22a, the hole group 222 is arranged in the first column segment 22a, and a plurality of connecting columns 212 are connected to the second column segment 22b.

[0070] The radial dimension of the second column segment 22b is smaller than the radial dimension of the first column segment 22a, which can be understood as: the outer diameter of the second column segment 22b is smaller than the outer diameter of the first column segment 22a, and the radial dimension of the portion of the oil collecting chamber 221 located in the first column segment 22a can be larger than the radial dimension of the portion of the oil collecting chamber 221 located in the second column segment 22b. Of course, it can also be equal to the radial dimension of the portion of the oil collecting chamber 221 located in the second column segment 22b.

[0071] The oil spray device 1 provided in one embodiment of the present application can increase the radial distance between the connecting column 212 and the inside of the main tube 10 by making the radial dimension of the second column section 22b smaller and making multiple connecting columns 212 connected to the second column section 22b, thereby reducing or avoiding the friction interference between the connecting column 212 and the main tube 10 during the movement with the piston rod 211. At the same time, by making the radial dimension of the first column section 22a larger and making the hole group 222 arranged in the first column section 22a, the distance between the regulating hole 2221 and the ejection hole 10c along the radial direction Y of the main tube 10 can be reduced, thereby reducing the volume of the lubricating fluid leaking from the gap between the regulating hole 2221 and the ejection hole 10c due to gravity during the flow process from the regulating hole 2221 to the ejection hole 10c, that is, reducing the leakage, improving the utilization rate of the lubricating fluid, ensuring the pressure of the lubricating fluid flowing from the regulating hole 2221 to the ejection hole 10c, and reducing the blockage rate of the ejection hole 10c.

[0072] In some optional embodiments, an oil injection device 1 provided in one embodiment of the present application, the main body pipe 10 includes a first tube body 11 and a second tube body 12, the cavity 10a is arranged in the first tube body 11 and penetrates the second tube body 12, the inlet hole 10b is arranged in the second tube body 12, and the ejection hole 10c is arranged in the first tube body 11. In which, along the radial direction Y of the main body pipe 10, the radial dimension of the first tube body 11 is greater than the radial dimension of the second tube body 12, a step surface 13 is formed between the first tube body 11 and the second tube body 12, and the oil injection device 1 further includes a connecting seat 50, which is sleeved on the main body pipe 10 and fixed to the step surface 13 along the axial direction X.

[0073] The fuel injection device 1 provided in one embodiment of the present application, by setting a connecting seat 50, facilitates the connection between the fuel injection device 1 and the applied components, for example, facilitates the connection with the base 2. At the same time, the above-mentioned structural form of the main body tube 10 can be beneficial to the limiting of the connecting seat 50 during installation, ensure the connection requirements between the connecting seat 50 and the main body tube 10, and reduce the difficulty of assembling the connecting seat 50.

[0074] In some optional embodiments, in the oil spray device 1 provided in one embodiment of the present application, the wall thickness of the first tube body 11 is less than the wall thickness of the second tube body 12. Through the above arrangement, the depth of the spray hole 10c in the radial direction Y can be reduced, the spray resistance of the lubricating fluid can be reduced, and the pressure loss of the lubricating fluid in the process of passing through the regulating hole 2221 can be reduced, and the blockage rate of the spray hole 10c can be further reduced.

[0075] It can be understood that the oil injection devices provided in the above embodiments are all illustrated by taking the first direction including the axial direction X of the main tube 10 as an example. This is an optional embodiment, but is not limited to the above method. In some embodiments, the first direction can also include the circumferential direction W of the main tube 10.

[0076] In some optional embodiments, an embodiment of the present application provides an oil injection device 1, each hole group 222 includes a plurality of adjustment holes 2221 distributed along the circumferential direction W and respectively connected to the oil collecting chamber 221, and the force member 21 is configured to drive the adjustment member 22 to rotate relative to the main tube 10 along the circumferential direction W, and can optionally rotate with the center line of the main tube as the rotation center to adjust the hole group 222 and the adjustment hole 2221 connected to the ejection hole 10c. Optionally, along the axial direction W, the aperture of each adjustment hole 2221 of the hole group 222 tends to gradually increase. In addition to changing the distribution direction of the adjustment holes 2221 of each hole group, the structural form of the main tube 10, the force member 21, the adjustment member 22 and other components can be the same as the oil injection devices provided in the above-mentioned embodiments, and will not be repeated here.

[0077] The transmission system 100 provided in one embodiment of the present application includes the oil injection device 1 provided in the above embodiments, which has a good lubrication effect on the bearing 4, can increase the service life of the bearing 4, and has the advantages of low cost and good safety performance.

[0078] In some optional embodiments, an embodiment of the present application provides a transmission system 100, wherein the bearing 4 is provided with an oil injection device 1 on at least one side of the length direction Z of the main shaft 3, and a plurality of sockets 202 extending respectively along the radial direction Y of the main shaft 3 are provided on the base 2, and the plurality of sockets 202 are spaced apart around the main shaft 3, and an oil injection device 1 is provided in each socket 202, and a portion of the main body tube 10 provided with a spray hole 10c extends from the socket 202 into the shaft hole 201 and is arranged toward the bearing 4, and an entry hole 10b and a force-applying member 21 are provided protruding from the outer wall of the base 2.

[0079] The oil spray device 1 may be provided on one side of the bearing 4 in the length direction Z of the main shaft 3 . Of course, the oil spray device 1 may also be provided on both sides of the bearing 4 in the length direction Z of the main shaft 3 .

[0080] The transmission system 100 provided in one embodiment of the present application, through the above-mentioned arrangement, is conducive to the assembly of the oil injection device 1 and the connection between the inlet hole 10b and the lubricating fluid supply equipment. At the same time, the lubricating fluid can be effectively guided to the area to be lubricated of the bearing 4, thereby ensuring the lubrication effect on the bearing 4.

[0081] In some optional embodiments, the transmission system 100 provided by one embodiment of the present application, a matching portion 203 is provided on the base 2, the matching portion 203 includes one of a protrusion and a groove, at least a portion of the oil spray device 1 matches the shape of the matching portion 203 and abuts against each other, and the matching portion 203 and the oil spray device 1 can be detachably connected to each other through a fastener. When the oil spray device 1 includes a connecting seat 50, the shape of the matching portion 203 matches the shape of the connecting seat 50 and abuts against each other, and at the same time, the matching portion 203 and the connecting seat 50 are detachably connected through a fastener.

[0082] The mating portion 203 may be an annular structure arranged around the main shaft 3, or a protrusion structure partially protruding from the base 2. In some embodiments, the mating portion 203 may also be a groove arranged on the base 2. The above structural forms can meet the requirements of matching the shape of the connecting seat 50 and cooperating with each other.

[0083] The transmission system 100 provided in one embodiment of the present application can ensure the support and installation requirements of the fuel injection device 1 and the stability of the connection between the fuel injection device 1 and the base 2 by providing a matching portion 203 and matching it with at least part of the shape of the fuel injection device 1.

[0084] In some optional embodiments, the transmission system 100 provided in one embodiment of the present application may further include a controller and a temperature collector 5 connected to the base 2, a temperature measuring hole 204 is provided on the base 2, the temperature measuring hole 204 is located between the temperature collector 5 and the bearing 4, the temperature collector 5 is configured to obtain temperature information of the bearing 4, and the controller is configured to control the force-applying member 21 to drive the adjusting member 22 to move along the axial direction X according to the temperature information, so as to adjust the adjusting hole 2221 that is connected to the hole group 222 and the ejection hole 10c.

[0085] The transmission system 100 provided in one embodiment of the present application can determine whether the lubrication is sufficient according to the temperature of the bearing 4 by setting a temperature collector 5 and a controller. When the temperature is too high, the adjusting member 22 can be driven to move by the force member 21, so that the adjusting hole 2221 with a larger aperture corresponds to the ejection hole 10c, providing more lubricating fluid to achieve the purpose of cooling and lubrication. When the ambient temperature of the bearing 4 is low, the adjusting hole 2221 with a larger radial size can be adjusted to correspond to the ejection hole 10c to open the pipeline to avoid the problem of not being able to provide lubrication for the bearing 4 due to poor flow.

[0086] In some optional embodiments, in a transmission system 100 provided by an embodiment of the present application, the controller is configured as follows:

[0087] When the temperature value fed back by the temperature information is within the first threshold range, the force applying member 21 is controlled to drive the adjusting member 22 to move along the axial direction X, so that the adjusting hole 2221 with the smallest aperture in the hole group 222 is arranged opposite to the ejection hole 10c.

[0088] When the temperature value of the temperature information feedback exceeds the first threshold range, the force applying member 21 is controlled to drive the adjusting member 22 to move along the axial direction X and make the next-level larger adjusting hole 2221 arranged opposite to the ejection hole 10c, and increase the flow rate of the lubricating fluid entering through the inlet hole 10b.

[0089] Among them, the first threshold range is related to the temperature value of the lubricating fluid entering the oil injection device 1. Optionally, the value of the first threshold range can be selected as 0°~Tp+K, where Tp is the temperature value of the lubricating fluid entering the oil injection device 1, and K is a constant, which can be selected as any value between 8°-12°, including the two end values ​​of 8° and 12°.

[0090] In some optional embodiments, in a transmission system 100 provided by an embodiment of the present application, the controller is further configured as follows:

[0091] The rotation speed value of the main shaft and the temperature value of the lubricating fluid entering the oil injection device 1 are obtained. When the rotation speed value is less than or equal to the first threshold value and the temperature value of the lubricating fluid entering the oil injection device 1 is within the second preset threshold value range, the force-applying member 21 is controlled to drive the adjusting member 22 to move along the axial direction X, so that the adjusting hole 2221 with the smallest aperture in the hole group 222 is arranged opposite to the ejection hole 10c.

[0092] When the rotation speed value is greater than the first threshold and the temperature value of the lubricating fluid entering the oil injection device 1 exceeds the second preset threshold range, the force applying member 21 is controlled to drive the adjusting member 22 to move along the axial direction X and make the next larger adjusting hole 2221 arranged opposite to the spray hole 10c.

[0093] Through the above arrangement, the clogging probability of the oil injection device 1 can be reduced and the lubrication effect can be ensured.

[0094] The first threshold value may be selected as 3 rpm to 5 rpm, and the second threshold value range may be selected as 5° to 30°.

[0095] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fuel injection device, characterized in that: include: A main body tube having a cavity, an inlet hole and an outlet hole communicating with the cavity; an adjusting component, inserted into the cavity, the adjusting component comprising a force-applying member and an adjusting member connected to each other, the adjusting member having an oil collecting cavity and at least one group of holes, each of the hole groups comprising a plurality of adjusting holes distributed along a first direction and respectively connected to the oil collecting cavity, the oil collecting cavity being connected to the inlet hole, the lubricating fluid being able to enter the oil collecting cavity through the inlet hole and flow through one of the adjusting holes and then be sprayed out from the spray hole; There is a difference between the apertures of at least two of the adjustment holes, the aperture of the ejection hole is greater than or equal to the aperture of the largest adjustment hole in the hole group, and the force-applying member is configured to drive the adjustment member to move relative to the main tube along the first direction to adjust the adjustment hole connected to the hole group and the ejection hole, and the first direction includes one of the axial direction and the circumferential direction of the main tube.

2. The oil injection device according to claim 1, characterized in that: There are multiple ejection holes, and the multiple ejection holes are distributed along the first direction. The adjustment member is provided with a group of hole groups corresponding to each ejection hole. Along the first direction, the aperture change pattern of each adjustment hole of any two groups of hole groups is the same.

3. The oil injection device according to claim 1, characterized in that: Along the first direction, the diameter of each adjusting hole in the hole group tends to gradually increase.

4. The oil injection device according to claim 1, characterized in that: The main body tube has a first port and a second port connected to the cavity along the axial direction, the inlet hole and the outlet hole are both located between the first port and the second port, the force-applying member is at least partially protruded from the first port and is dynamically sealed with the main body tube, the second port and the oil collecting chamber are closed at one end axially away from the first port and open at the other end.

5. The oil injection device according to claim 4, characterized in that: The second port is sealed with a sealing plate, a collecting chamber is formed between the adjusting member and the sealing plate, the collecting chamber is configured to collect the lubricating fluid left from the gap between the adjusting member and the main tube, and the adjusting member is provided with a through hole connecting the collecting chamber and the oil collecting chamber.

6. The oil injection device according to claim 1, characterized in that: The force-applying member includes a piston rod and a plurality of connecting columns. Along the axial direction, one end of the piston rod is slidably connected to the main body tube and the other end protrudes from the main body tube. The plurality of connecting columns are spaced apart from each other around the axis of the piston rod and are respectively connected between the adjusting member and the piston rod.

7. The oil injection device according to claim 6, characterized in that: The adjusting member is columnar and includes a first column section and a second column section distributed along the axial direction. The oil collecting chamber is arranged in the second column section and penetrates the first column section. The radial dimension of the second column section is smaller than the radial dimension of the first column section. The hole group is arranged in the first column section, and a plurality of the connecting columns are connected to the second column section.

8. The oil injection device according to any one of claims 1 to 7, characterized in that: The main body tube includes a first tube body and a second tube body, the cavity is arranged in the first tube body and penetrates the second tube body, the inlet hole is arranged in the second tube body, and the outlet hole is arranged in the first tube body; Among them, along the radial direction of the main tube, the radial dimension of the first tube body is greater than the radial dimension of the second tube body, a step surface is formed between the first tube body and the second tube body, and the oil injection device also includes a connecting seat, which is sleeved on the main tube and fixed to the step surface along the axial direction; and / or the tube wall thickness of the first tube body is less than the tube wall thickness of the second tube body.

9. A transmission system, characterized in that: include: A base having an axial hole; A main shaft, inserted into the shaft hole; A bearing, sleeved on the main shaft, wherein the main shaft is rotatably connected to the base through the bearing; The oil spray device according to any one of claims 1 to 8 is disposed on the base and is configured to spray lubricating fluid toward the bearing.

10. The transmission system according to claim 9, characterized in that: The bearing is provided with the oil injection device on at least one side in the length direction of the main shaft, and the base is provided with a plurality of sockets extending along the radial direction of the main shaft respectively. The plurality of sockets are spaced around the main shaft, and the oil injection device is respectively provided in each of the sockets. The portion of the main body tube provided with the spray hole extends from the socket into the shaft hole and is arranged toward the bearing, and the entry hole and the force-applying member are arranged to protrude from the outer wall surface of the base.

11. The transmission system according to claim 10, characterized in that: The oil injection device also includes a connecting seat, which is sleeved on the main tube and connected to the main tube. A matching portion is provided on the base, and the matching portion includes one of a protrusion and a groove. The shape of the matching portion matches the shape of the connecting seat and abuts against each other. The matching portion and the connecting seat are detachably connected via fasteners.

12. The transmission system according to any one of claims 9 to 11, characterized in that: The transmission system further comprises a controller and a temperature collector connected to the base, the base is provided with a temperature measuring hole, and the temperature measuring hole is located between the temperature collector and the bearing; The temperature collector is configured to obtain temperature information of the bearing, and the controller is configured to control the distance that the force applying member drives the adjusting member to move along the axial direction according to the temperature information, so as to adjust the adjusting hole that is connected to the hole group and the ejection hole.

13. A wind turbine generator set, characterized in that: Comprising a transmission system as claimed in any one of claims 9 to 12.

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