CN210738993U - Oil leakage detection device, hydraulic oil cylinder and wind generating set - Google Patents
Oil leakage detection device, hydraulic oil cylinder and wind generating set Download PDFInfo
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- CN210738993U CN210738993U CN201921919041.5U CN201921919041U CN210738993U CN 210738993 U CN210738993 U CN 210738993U CN 201921919041 U CN201921919041 U CN 201921919041U CN 210738993 U CN210738993 U CN 210738993U
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- 239000003921 oil Substances 0.000 title claims abstract description 76
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000005484 gravity Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 13
- 230000000246 remedial effect Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The application provides a fluid leakage detection device, hydraulic cylinder and wind generating set. The oil leakage detection device comprises a detector, a collection box and a guide pipe; the collecting box is provided with a first opening and a second opening which are opposite to each other, is used for a cylinder rod of a hydraulic oil cylinder to penetrate through and can be respectively matched with a cylinder body and a cylinder rod of the hydraulic oil cylinder in a sealing way; the collection box is provided with a leakage hole, and the detector is communicated with the leakage hole through a conduit. The inner surface of the collecting box, the first end surface of the cylinder body and the outer peripheral surface of the cylinder rod can enclose to form a cavity. When oil in the cylinder body leaks through a gap between the cylinder rod and the cylinder body, leaked oil is collected in the cavity, the oil in the cavity sequentially flows into the detector through the leakage hole of the collection box and the guide pipe, the detector senses that the oil flows in and can send prompt information timely, the hydraulic oil cylinder of a worker is prompted to leak the oil, the worker can take corresponding remedial measures as soon as possible, and great loss is avoided.
Description
Technical Field
The application relates to the technical field of leak detection devices, in particular to an oil leakage detection device, a hydraulic oil cylinder and a wind generating set.
Background
Hydraulic rams are a common component in the mechanical arts and generally include a cylinder body and a cylinder rod. As shown in fig. 1, the first end surface of the cylinder body is provided with an opening through which a portion of the cylinder rod can protrude outside the cylinder body for telescopic movement relative to the cylinder body.
There is a very small gap between the cylinder rod and the opening of the cylinder body, and a dynamic seal is usually provided at the gap to prevent oil in the cylinder body from leaking. However, under special operating conditions, oil in the cylinder still leaks out through the gap. When the hydraulic oil cylinder leaks oil, the working performance of the hydraulic oil cylinder and the system where the hydraulic oil cylinder is located can be affected, and great loss is caused.
In the prior art, whether the hydraulic oil cylinder leaks oil or not can not be detected timely.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a fluid leakage detection device, hydraulic cylinder and wind generating set for solve prior art and can't detect the technical problem whether hydraulic cylinder takes place the oil leak in time.
In a first aspect, an embodiment of the present application provides an oil leakage detection apparatus, including a detector, a collection box, and a conduit; the collecting box is provided with a first opening and a second opening which are opposite to each other, is used for a cylinder rod of a hydraulic oil cylinder to penetrate through and can be respectively matched with a cylinder body and a cylinder rod of the hydraulic oil cylinder in a sealing way; the collection box is provided with a leakage hole, and the detector is communicated with the leakage hole through a conduit.
In a second aspect, an embodiment of the present application provides a hydraulic cylinder, which includes a cylinder body, a cylinder rod, and the oil leakage detection apparatus provided in the embodiment of the present application; the cylinder rod penetrates through a first opening and a second opening of the collecting box, the first opening is in sealing fit with the cylinder body, and the second opening is in sealing fit with the cylinder rod; the detector is arranged on the cylinder body or on a component outside the hydraulic oil cylinder, and the detector is communicated with the leakage hole through a guide pipe.
In a third aspect, the embodiment of the application provides a wind generating set, including the hydraulic oil cylinder provided by the embodiment of the application.
Compared with the prior art, the utility model discloses possess following beneficial technological effect:
when using the fluid leakage detection device that this application embodiment provided, collect the box and connect in hydraulic cylinder's cylinder body, stretch out in the part of cylinder body in hydraulic cylinder's the jar pole, pass the first opening and the second opening of collecting the box in proper order, the jar pole can be for cylinder body and collection box do concertina movement. The edge of the first opening is in sealing fit with the first end face of the cylinder body; the edge of the second opening is in sealing fit with the part of the cylinder rod extending out of the cylinder body. Thus, the inner surface of the collecting box, the first end surface of the cylinder body and the outer circumferential surface of the cylinder rod can enclose a cavity.
When oil in the cylinder body leaks through a gap between the cylinder rod and the cylinder body, leaked oil is collected in the cavity, the oil in the cavity sequentially flows into the detector through the leakage hole of the collection box and the guide pipe, and the detector can timely send prompt information when sensing the oil flowing in to prompt a worker that the oil leakage of the hydraulic cylinder occurs.
The oil leakage detection device provided by the embodiment of the application can detect that the hydraulic oil cylinder leaks oil in time and send prompt information to workers, so that the workers can take corresponding remedial measures as soon as possible, and great loss is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.
FIG. 1 is a schematic diagram of a conventional hydraulic ram;
FIG. 2 is a schematic structural diagram of a hydraulic cylinder provided in an embodiment of the present application, including an oil leakage detection device;
FIG. 3 is a cross-sectional view of FIG. 2, the cross-section taken through the axis of the cylinder rod, as provided by an embodiment of the present application;
FIG. 4 is a schematic assembled cross-sectional view of the collection cassette and seal ring of FIG. 2 according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of the collecting box in FIG. 2 according to an embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view of another embodiment of the present disclosure;
FIG. 7 is a schematic structural diagram of a gasket provided in an embodiment of the present application;
fig. 8 is a schematic position diagram of a hydraulic oil cylinder in an impeller according to an embodiment of the present application.
The reference numerals are explained as follows:
1-a detector; 11-a leak sensor;
2-a collection box;
201-a first opening; 202-a second opening;
21-a pipe body; 211-leakage hole; 212-a vent;
22-a first annular member;
23-a second ring member; 231-connecting holes;
3-a catheter;
4-sealing ring;
5-a sealing gasket;
51-via holes; 52-avoiding holes;
6-cylinder body;
61-a first end face; 62-a threaded hole;
7-cylinder rod;
100-cavity.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1, a conventional hydraulic ram generally includes a cylinder block 6 and a cylinder rod 7. As shown in fig. 1, the first end surface 61 of the cylinder 6 is provided with an opening through which a part of the cylinder rod 7 can protrude outside the cylinder 6, and the cylinder rod 7 and the opening of the cylinder 6 have a very small gap L therebetween. The inventor of the application finds that under the general condition, the dynamic seal arranged at the gap L in the hydraulic oil cylinder can play a role in preventing oil leakage. However, under some special operating conditions, the oil in the cylinder 6 may still leak out through the gap L. For example, for a hydraulic cylinder applied in a pitch system of a wind turbine generator system, when the hydraulic cylinder is under a large load, a large vibration or in a rotating state, the hydraulic cylinder has a high risk of oil leakage. However, by means of the prior art, it is not always possible to detect in good time whether a hydraulic cylinder is leaking oil.
For the above reasons, the present embodiment provides an oil leakage detection device, which is exemplified by fig. 2 to 4 and includes a detector 1, a collection box 2, and a conduit 3. The collecting box 2 is provided with opposite first and second openings 201 and 202 for the passage of the rod 7 of the hydraulic cylinder and is able to sealingly cooperate with the cylinder body 6 and the rod 7 of the hydraulic cylinder, respectively. The collecting cassette 2 is provided with a leakage hole 211, and the detector 1 communicates with the leakage hole 211 through the guide tube 3.
When the oil leakage detection device provided by the embodiment of the application is applied, the collection box 2 is connected to the cylinder body 6 of the hydraulic oil cylinder, the part of the cylinder rod 7 of the hydraulic oil cylinder, which extends out of the cylinder body 6, sequentially penetrates through the first opening 201 and the second opening 202 of the collection box 2, and the cylinder rod 7 can move telescopically relative to the cylinder body 6 and the collection box 2. The edge of the first opening 201 is in sealing fit with the first end surface 61 of the cylinder 6; the edge of the second opening 202 is in sealing engagement with the portion of the cylinder rod 7 that protrudes from the cylinder block 6. Thus, the inner surface of the collecting box 2, the first end surface 61 of the cylinder 6 and the outer circumferential surface of the cylinder rod 7 can enclose a cavity 100.
When fluid in the cylinder body 6 leaks through the gap between the cylinder rod 7 and the cylinder body 6, the leaked fluid is collected in the cavity 100, the fluid in the cavity 100 sequentially flows into the detector 1 through the leakage hole 211 of the collecting box 2 and the guide pipe 3, and the detector 1 can timely send prompt information when sensing the inflow of the fluid to prompt a worker that the hydraulic cylinder has leaked the fluid.
The oil leakage detection device provided by the embodiment of the application can detect that the hydraulic oil cylinder leaks oil in time and send prompt information to workers, so that the workers can take corresponding remedial measures as soon as possible, and great loss is avoided.
It should be noted that, for a single-rod hydraulic cylinder, one of the end faces of the cylinder body 6 is a first end face 61, and the first end face 61 is provided with an opening. Through which an end portion of the cylinder rod 7 protrudes outside the cylinder block 6. A single-rod hydraulic oil cylinder is provided with an oil leakage detection device.
For a double-rod hydraulic cylinder, the two end faces of the cylinder body 6 are first end faces 61, and each first end face 61 is provided with an opening. The cylinder rod 7 is extended out of the cylinder body 6 through two openings near both end portions, respectively. Two oil leakage detection devices are arranged on one double-rod hydraulic oil cylinder.
In one embodiment of the present application, as shown in fig. 4 and 5, the collection cassette 2 comprises a tubular body 21 and a first ring member 22, the tubular body 21 having a cylindrical shape. One orifice of the tube 21 is a first opening 201 for sealing engagement with the cylinder 6. The edge of the other end of the tubular body 21 is connected to the outer edge of the first annular member 22, and the inner bore of the first annular member 22 is a second opening 202 for sealing engagement with the cylinder rod 7.
The radial dimension of the inner hole of the first annular member 22 is slightly larger than the radial dimension of the part of the cylinder rod 7 extending out of the cylinder body 6, so as to ensure that the cylinder rod 7 can perform telescopic movement relative to the collecting box 2. In order to prevent as much as possible the oil collected in the cavity 100 from leaking out through the gap between the second opening 202 and the cylinder rod 7. In one embodiment of the present application, as shown in fig. 3 and 4, the oil leakage detecting device further includes a seal ring 4, and the seal ring 4 is disposed between the second opening 202 and the cylinder rod 7. The seal ring 4 can effectively prevent the oil collected in the cavity 100 from leaking out from the gap between the second opening 202 and the cylinder rod 7.
Alternatively, in fig. 3, the sealing ring 4 is arranged in the gap between the inner hole of the first ring member 22 and the cylinder rod 7, and the sealing ring 4 may be a dynamic seal.
Alternatively, the sealing ring 4 may be made of rubber or other material capable of sealing.
In one embodiment of the present application, as shown in fig. 6, the collecting box 2 comprises a tubular body 21, the tubular body 21 being tapered. The tube opening with the larger inner diameter in the tube body 21 is the first opening 201, and the tube opening with the smaller inner diameter is the second opening 202.
The radial dimension of the orifice with the smaller inner diameter in the tapered tube body 21 is slightly larger than the radial dimension of the part of the cylinder rod 7 extending out of the cylinder body 6, so as to ensure that the cylinder rod 7 can perform telescopic motion relative to the collecting box 2. In order to prevent as much as possible the oil collected in the cavity 100 from leaking out through the gap between the orifice of smaller inner diameter in the tubular body 21 and the cylinder rod 7. In one embodiment of the present application, the oil leakage detecting device further includes a seal ring 4, and the seal ring 4 is disposed between the second opening 202 and the cylinder rod 7.
Alternatively, the sealing ring 4 is disposed in a gap between the pipe orifice with the smaller inner diameter in the pipe body 21 and the cylinder rod 7, and the sealing ring 4 may be a dynamic seal.
In one embodiment of the present application, as shown in fig. 6, the leakage hole 211 is provided on the pipe body 21.
Alternatively, the number of the leakage holes 211 may be one or at least two. As shown, the pipe body 21 is provided with three leakage holes 211, and one guide pipe 3 is connected to each leakage hole 211.
In one embodiment of the present application, as shown in fig. 5, the tube body 21 is provided with a vent hole 212. The vent 212 may ensure that the cavity 100 for collecting oil is in communication with the outside atmosphere, facilitating the escape of oil from the cavity 100 through the weep hole 211.
In one embodiment of the present application, as shown in fig. 2 to 4, the collecting box 2 further comprises a second annular member 23 for connection with the first end surface 61 of the cylinder 6. The second ring member 23 is provided with a connection hole 231. The edge of the first opening 201 is connected to the inner edge of the second annular member 23.
Alternatively, as shown in fig. 3, the first end surface 61 of the cylinder block 6 may be provided with a threaded hole 62. The second ring member 23 is fitted to the first end surface 61 of the cylinder 6 such that each of the connection holes 231 of the second ring member 23 corresponds to one of the screw holes 62 of the first end surface 61 of the cylinder 6, and a screw is screwed into the screw hole 62 after passing through the connection hole 231, so that the collection box 2 is attached to the cylinder 6.
In one embodiment of the present application, as shown in fig. 3, the oil leakage detecting device further includes a gasket 5, and the gasket 5 is configured to be disposed between the second annular member 23 and the first end surface 61 of the cylinder 6.
The sealing gasket 5 can be closely attached to the second annular member 23 and the first end surface 61 of the cylinder 6, and oil is prevented from leaking out through a gap between the second annular member 23 and the first end surface 61 of the cylinder 6.
Alternatively, as shown in fig. 7, the gasket 5 is provided with a through hole 51 through which the cylinder rod 7 of the hydraulic cylinder passes, and a relief hole 52 corresponding to the connection hole 231 of the second annular member 23.
Alternatively, the gasket 5 may be made of rubber or other material capable of sealing.
In one embodiment of the present application, the inner surface of the collection cassette 2 is coated with an oil-phobic layer. The oil drainage layer can prevent oil from being attached to the inner surface of the collecting box 2, so that the oil leaked from the hydraulic oil cylinder can flow into the detector 1 in time, the accuracy of a detection result is improved, and the omission is effectively avoided.
In one embodiment of the present application, as shown in fig. 2 and 3, detector 1 includes an electrically connected controller (not shown) and a leak sensor 11, leak sensor 11 being adapted to communicate with a port of conduit 3.
After the oil flows into the leakage sensor 11, parameters (such as a current value, a voltage value, a resistance value or a frequency of a transmitting signal) output by the leakage sensor 11 are changed, the controller determines that the hydraulic oil cylinder has oil leakage according to the change of the parameters, and sends prompt information in time.
For example, the leakage sensor 11 may be an oil-filled leakage sensor 11, and a resistance value inside the oil-filled leakage sensor 11 changes when oil flows into the oil-filled leakage sensor 11.
Alternatively, the controller may be wired or wirelessly connected to leak sensor 11.
Based on same utility model conceive, this application embodiment still provides a hydraulic cylinder to fig. 2 to fig. 4 are the example, including cylinder body 6, jar pole 7 and the fluid leak testing device that this application embodiment provided. The cylinder rod 7 is arranged through a first opening 201 and a second opening 202 of the collecting box 2, the first opening 201 is in sealing fit with the cylinder body 6, and the second opening 202 is in sealing fit with the cylinder rod 7. The detector 1 is arranged on the cylinder body 6 or on a component outside the hydraulic oil cylinder, and the detector 1 is communicated with the leakage hole 211 through the conduit 3.
In fig. 3, the collecting box 2 is connected to a first end face 61 of the cylinder 6 of a hydraulic cylinder, the part of the rod 7 of the hydraulic cylinder which extends out of the cylinder 6 passes through a first opening 201 and a second opening 202 of the collecting box 2 in sequence, and the rod 7 can move telescopically relative to the cylinder 6 and the collecting box 2. The edge of the first opening 201 is in sealing fit with the first end surface 61 of the cylinder 6; the edge of the second opening 202 is in sealing engagement with the portion of the cylinder rod 7 that protrudes from the cylinder block 6. Thus, the inner surface of the collecting box 2, the first end surface 61 of the cylinder 6 and the outer circumferential surface of the cylinder rod 7 can enclose a cavity 100.
In fig. 2, the detector 1 is attached to the cylinder 6 of a hydraulic ram.
Optionally, the detector 1 should be as close to the collecting box 2 as possible, so as to shorten the oil conveying path and improve the detection efficiency and accuracy.
Alternatively, the detector 1 may be attached to other components than the hydraulic ram.
It should be noted that the hydraulic cylinder shown in fig. 2 and 3 is a single-rod hydraulic cylinder, and one of the end surfaces of the cylinder body 6 is a first end surface 61, and the first end surface 61 is provided with an opening. Through which an end portion of the cylinder rod 7 protrudes outside the cylinder block 6. A single-rod hydraulic oil cylinder is provided with an oil leakage detection device.
It will be appreciated by those skilled in the art that the hydraulic cylinder provided in the embodiments of the present application may also be a double-rod hydraulic cylinder, and the two end faces of the cylinder body 6 are first end faces 61, and each first end face 61 is provided with an opening. The cylinder rod 7 is extended out of the cylinder body 6 through two openings near both end portions, respectively. Two oil leakage detection devices are arranged on one double-rod hydraulic oil cylinder.
In one embodiment of the present application, as shown in fig. 3, the cylinder rod 7 is inserted through a first end surface 61 of the cylinder 6, and the second annular member 23 of the collecting box 2 is fitted and connected to the first end surface 61.
Alternatively, the first end surface 61 of the cylinder block 6 may be provided with a threaded hole 62. The second ring member 23 is fitted to the first end surface 61 of the cylinder 6 such that each of the connection holes 231 of the second ring member 23 corresponds to one of the screw holes 62 of the first end surface 61 of the cylinder 6, and a screw is screwed into the screw hole 62 after passing through the connection hole 231, so that the collection box 2 is attached to the cylinder 6.
In one embodiment of the present application, as shown in fig. 3, a gasket 5 is provided between the second annular member 23 and the first end surface 61 of the cylinder 6. The sealing gasket 5 can be closely attached to the second annular member 23 and the first end surface 61 of the cylinder 6, and oil is prevented from leaking out through a gap between the second annular member 23 and the first end surface 61 of the cylinder 6.
Alternatively, as shown in fig. 7, the gasket 5 is provided with a through hole 51 through which the cylinder rod 7 of the hydraulic cylinder passes, and a relief hole 52 corresponding to the connection hole 231 of the second annular member 23.
Alternatively, the gasket 5 may be made of rubber or other material capable of sealing.
In one embodiment of the present application, as shown in fig. 3, a sealing ring 4 is provided between the second opening 202 of the collecting box 2 and the cylinder rod 7. The seal ring 4 can effectively prevent the oil collected in the cavity 100 from leaking out from the gap between the second opening 202 and the cylinder rod 7.
Alternatively, in fig. 3, the sealing ring 4 is arranged in the gap between the inner hole of the first ring member 22 and the cylinder rod 7, and the sealing ring 4 may be a dynamic seal.
Alternatively, the sealing ring 4 may be made of rubber or other material capable of sealing.
Based on same utility model conceive, this application embodiment still provides a wind generating set, include the hydraulic cylinder that this application embodiment provided.
In one embodiment of the application, the hydraulic cylinder is a rotary part and the leakage hole 211 is provided at or near the position where the centrifugal force of the collecting cassette 2 is directed.
In the present embodiment, if the hydraulic cylinder is a rotating part, it means that the hydraulic cylinder can revolve, that is, rotate around a certain rotation center other than the hydraulic cylinder, and does not mean that the hydraulic cylinder rotates.
Optionally, the hydraulic cylinder provided to the impeller is a rotating part, such as a hydraulic cylinder applied to a pitch system, and the hydraulic cylinder can rotate around the rotation center of the impeller. In fig. 8, reference numeral a denotes an impeller, and reference numeral B denotes a hydraulic cylinder provided in the embodiment of the present application. When the hydraulic ram rotates with the impeller, centrifugal force is generated, and the leak hole 211 is provided at or near the position to which the centrifugal force is directed. The oil leaked from the cylinder 6 flows into the leak hole 211 by the centrifugal force and then flows into the detector 1 through the pipe 3.
In one embodiment of the application, the hydraulic ram is a non-rotating part and the leak hole 211 is provided at or near the position where the weight of the collecting cassette 2 is directed.
Optionally, the hydraulic ram provided to the nacelle or tower is a non-rotating component, such as a hydraulic ram applied in a locking pin arrangement. The oil leaked from the cylinder 6 flows into the leak hole 211 by gravity and then flows into the detector 1 through the pipe 3.
By applying the embodiment of the application, at least the following technical effects are achieved:
1. when the oil leakage detection device provided by the embodiment of the application is applied, the inner surface of the collection box, the first end surface of the cylinder body and the outer peripheral surface of the cylinder rod can be enclosed to form a cavity. When oil in the cylinder body leaks through a gap between the cylinder rod and the cylinder body, leaked oil is collected in the cavity, the oil in the cavity sequentially flows into the detector through the leakage hole of the collection box and the guide pipe, the detector senses that the oil flows in and can send prompt information timely, the hydraulic oil cylinder of a worker is prompted to leak the oil, the worker can take corresponding remedial measures as soon as possible, and great loss is avoided.
2. In the oil leakage detection device that this application embodiment provided, the sealing washer can set up and between second opening and the cylinder rod, prevents effectively that the fluid of collecting in the cavity from leaking from the gap between second opening and the cylinder rod.
3. In the oil leakage detection device that this application embodiment provided, be provided with the sealed pad between the first terminal surface of second annular member and cylinder body. The sealed pad can be carried with the first terminal surface of second annular member and cylinder body and is laminated inseparabler, avoids fluid to spill through the gap between the first terminal surface of second annular member and cylinder body.
4. In the oil leakage detection device that this application embodiment provided, the body is provided with the air vent. The vent hole can guarantee that the cavity that is used for collecting fluid communicates with outside atmosphere, helps the fluid in the cavity to flow through leaking the hole outflow.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. The oil leakage detection device is characterized by comprising a detector (1), a collection box (2) and a guide pipe (3);
the collecting box (2) is provided with a first opening (201) and a second opening (202) which are opposite to each other, is used for a cylinder rod (7) of a hydraulic oil cylinder to penetrate through, and can be respectively in sealing fit with a cylinder body (6) and a cylinder rod (7) of the hydraulic oil cylinder;
the collection box (2) is provided with a leakage hole (211), and the detector (1) is communicated with the leakage hole (211) through the conduit (3).
2. The oil leak detection device according to claim 1, comprising at least one of:
the collecting box (2) comprises a pipe body (21) and a first annular piece (22), wherein the pipe body (21) is cylindrical; one pipe orifice of the pipe body (21) is the first opening (201) and is used for being matched with the cylinder body (6) in a sealing way; the edge of the other nozzle of the pipe body (21) is connected with the outer edge of the first annular member (22), and the inner hole of the first annular member (22) is the second opening (202) and is used for being in sealing fit with the cylinder rod (7);
the collecting box (2) comprises a pipe body (21), and the pipe body (21) is conical; the pipe orifice with the larger inner diameter in the pipe body (21) is the first opening (201), and the pipe orifice with the smaller inner diameter is the second opening (202).
3. The oil leak detection device according to claim 2, wherein the collecting box (2) further comprises a second ring member (23) for connection with the first end surface (61) of the cylinder block (6);
the second ring-shaped member (23) is provided with a connecting hole (231); the edge of the first opening (201) is connected with the inner edge of the second ring member (23).
4. The oil leakage detecting device according to claim 3, further comprising a gasket (5), wherein the gasket (5) is adapted to be disposed between the second ring member (23) and the first end surface (61) of the cylinder block (6).
5. The oil leakage detecting device according to claim 2, wherein the leakage hole (211) is provided in the pipe body (21);
and/or the pipe body (21) is provided with a vent hole (212).
6. The oil leakage detection device according to claim 1, further comprising a seal ring (4), wherein the seal ring (4) is provided between the second opening (202) and the cylinder rod (7).
7. The oil leak detection device according to claim 1, comprising at least one of:
the inner surface of the collecting box (2) is coated with an oil-thinning layer;
the detector (1) comprises an electrically connected controller and a leak sensor (11), the leak sensor (11) being adapted to communicate with a port of the conduit (3).
8. A hydraulic cylinder characterized by comprising a cylinder body (6), a cylinder rod (7), and the oil leakage detecting device according to any one of claims 1 to 7;
the cylinder rod (7) penetrates through a first opening (201) and a second opening (202) of the collecting box (2), the first opening (201) is in sealing fit with the cylinder body (6), and the second opening (202) is in sealing fit with the cylinder rod (7);
the detector (1) is arranged on the cylinder body (6) or on a component outside the hydraulic oil cylinder, and the detector (1) is communicated with the leakage hole (211) through the guide pipe (3).
9. A wind power plant comprising a hydraulic ram according to claim 8.
10. Wind park according to claim 9, comprising at least one of:
the hydraulic oil cylinder is a rotating part, and the leakage hole (211) is arranged at or near the position to which the centrifugal force of the collecting box (2) points;
the hydraulic oil cylinder is a non-rotating component, and the leakage hole (211) is arranged at or near the position pointed by the gravity of the collecting box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919041.5U CN210738993U (en) | 2019-11-07 | 2019-11-07 | Oil leakage detection device, hydraulic oil cylinder and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919041.5U CN210738993U (en) | 2019-11-07 | 2019-11-07 | Oil leakage detection device, hydraulic oil cylinder and wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210738993U true CN210738993U (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921919041.5U Active CN210738993U (en) | 2019-11-07 | 2019-11-07 | Oil leakage detection device, hydraulic oil cylinder and wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212300A (en) * | 2023-11-09 | 2023-12-12 | 江苏策力液压机械有限公司 | Hydraulic cylinder sealing performance test equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117212300A (en) * | 2023-11-09 | 2023-12-12 | 江苏策力液压机械有限公司 | Hydraulic cylinder sealing performance test equipment |
| CN117212300B (en) * | 2023-11-09 | 2024-01-30 | 江苏策力液压机械有限公司 | Hydraulic cylinder sealing performance test equipment |
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