Hydraulic generator unit, oil tank outlet line sealing device and application method thereof

Abstract

The present application relates to the technical field of water turbine generator, and proposes a water turbine generator unit, an oil groove outlet line sealing device and an application method thereof, which comprises a unit, an oil groove, a variable diameter pipe, a heating part and a sealing part, wherein the oil groove is used for storing lubricating oil; the variable diameter pipe is a stepped pipe, the small-diameter end of the variable diameter pipe is communicated with the oil groove, the large-diameter end of the variable diameter pipe is a free end, and the inner wall of the large-diameter end of the variable diameter pipe is provided with an annular groove; the heating part is embedded in the large-diameter end of the variable diameter pipe; and the sealing part is inserted into the large-diameter end of the variable diameter pipe and is of an expansion structure. The present application connects the oil groove of the unit through the variable diameter pipe, and expands and fixes the sealing part in the variable diameter pipe, so as to conveniently integrate and fix the sealing part and the unit, and also to realize the sealing of the outgoing oil groove cable by expansion, and the whole has good sealing effect and is suitable for the automatic detection of the oil groove of the water turbine unit.

Description

Technical Field

[0001] This invention relates to the field of hydro-generator technology, and in particular to a hydro-generator set, an oil tank outlet sealing device, and its application method. Background Technology

[0002] The hydroelectric generator is the core electromechanical equipment of a hydropower station. It consists of two main components: a turbine and a generator. Its core function is to efficiently and continuously convert the potential and kinetic energy of water flow into electrical energy. Monitoring parameters such as oil level and temperature in the hydroelectric generator's oil tanks (usually referring to the lubricating oil tanks of the thrust bearing, guide bearing, and upper / lower guide bearing) is crucial to ensuring the safe and stable operation of the unit. A reliable and accurate technical solution is essential for preventing major accidents such as bearing failure and abnormal oil levels.

[0003] The existing utility model patent with authorization announcement number CN221256993U discloses an oil sighting window for easy monitoring of oil level in the oil tank of a hydro-generator set; another invention patent application with application publication number CN117109832A discloses a method for detecting leakage in the oil tank cooler of a hydro-generator bearing.

[0004] As mentioned above, one of the existing technical solutions involves manually checking the oil level in the oil tank by setting up a sight glass. However, due to the large size of the hydro-generator unit, manual inspection requires workers to move up and down inside the unit, which is not only time-consuming and labor-intensive but also poses safety risks. Therefore, the first solution is not suitable for hydro-generator units. Another technical solution discloses a sensor-based oil tank detection method, but it does not reveal the corresponding detection structure. Furthermore, sensor-based detection inevitably involves the outgoing data harness. Sealing the data harness used for oil tank detection is an important measure to ensure the normal operation of the hydro-generator unit. Based on this, a practical and feasible oil tank sealing solution is needed. Summary of the Invention

[0005] In view of this, the present invention proposes a sealing device for a hydro-generator set, an oil tank outlet sealing device and its application method that has a reliable sealing structure and is suitable for detecting oil quantity-related parameters of hydro-generator sets, in order to solve the problem that existing solutions are not suitable for the detection of large hydro-generator sets.

[0006] The technical solution of this invention is implemented as follows:

[0007] On one hand, the present invention provides a hydro-generator set, including a generator unit, an oil tank, a reducing pipe, a heating element, and a sealing element, wherein,

[0008] The unit is used to convert water energy into mechanical energy, and then output electrical energy;

[0009] The oil tank is used to store lubricating oil for the lubrication of the unit's components;

[0010] The reducing pipe is a stepped pipe. The small diameter end of the reducing pipe is connected to the oil tank, and the large diameter end of the reducing pipe is a free end. The inner wall of the large diameter end of the reducing pipe is provided with an annular groove.

[0011] The heating element is embedded in the large-diameter end of the reducer;

[0012] The seal is inserted into the large diameter end of the reducer, and the seal is an expansion structure to fit the annular groove for fixation. The oil groove cable passes through the seal and exits.

[0013] When the seal is in a sealed state, it does not abut against the stepped surface of the reducer, and the heating element corresponds to the gap between the end of the seal and the stepped surface.

[0014] Based on the above technical solutions, a preferred embodiment further includes an oil-blocking component, which comprises a sealing component and an oil pump. Two oil tanks are provided.

[0015] The two oil tanks are relatively isolated. One oil tank is used to hold lubricating oil and is connected to a reducing pipe. The other oil tank is used to hold sealing lubricating oil.

[0016] The plugging component is connected to the sealing component, and the plugging component is embedded in the small diameter end of the reducer. The oil tank cable passes through the plugging component.

[0017] The inlet of the oil pump is connected to an oil tank for holding the sealing lubricating oil via a pipeline, and the outlet of the oil pump is connected to the large diameter end of the reducer via a pipeline. The outlet port of the pipeline corresponds to the gap between the end of the seal and the stepped surface.

[0018] Based on the above technical solutions, preferably, the unit includes components to be lubricated, wherein...

[0019] Of the two oil tanks, the one used to hold the lubricating oil has an open structure on one side that fits against the part to be lubricated;

[0020] An oil trough for holding sealing lubricating oil is integrated inside the oil trough for holding lubricating oil.

[0021] The reducing pipe is used to set up an oil tank for containing sealing lubricating oil, and at least one oil tank cable extends into the oil tank for containing sealing lubricating oil, and the oil tank for containing sealing lubricating oil is provided with a sleeve corresponding to the oil tank cable.

[0022] On the other hand, the present invention provides an oil tank outlet sealing device, which serves as a sealing element. The sealing element includes a first clamping plate, a rubber block, a second clamping plate, bolts, and an expansion element.

[0023] A rubber block is installed on the side of the first clamping plate away from the unit;

[0024] The rubber block is partially fitted into the annular groove;

[0025] The second clamping plate is located on the other side of the rubber block;

[0026] The bolt passes through the second clamping plate and the rubber block, and the bolt is connected to the first clamping plate by threaded engagement;

[0027] An expansion element is installed inside the rubber block, and the expansion element is used to expand the rubber block.

[0028] Based on the above technical solutions, preferably, the expansion component includes a guide body and a driving component, wherein,

[0029] The guide body is located inside the rubber block. The end of the guide body facing the first clamping plate is set with a conical structure, and the middle section of the guide body is provided with a receiving groove.

[0030] The drive component is inserted into the guide body;

[0031] The rubber block and the expansion component are injection molded into a single structure. A portion of the rubber block is located within the receiving groove, and the driving component is used to extrude the portion of the rubber block located within the receiving groove.

[0032] Based on the above technical solutions, preferably, the guide body includes a first connecting body, a connecting rod, and a second connecting body, wherein...

[0033] The first connector is located inside the rubber block. The end of the first connector facing the first clamp is set as a conical structure, and the first connector is provided with a connected threaded groove and a first sealing groove.

[0034] The connecting rod is located on the side of the first connecting body away from the unit, and there are multiple connecting rods. The receiving groove is the gap between the multiple connecting rods.

[0035] The second connector is located on the side of the connecting rod away from the first connector. The second connector has a second sealing groove and is fitted with the second clamping plate.

[0036] One end of the drive component slides into the first sealing groove and is connected to the threaded groove by thread. The other end of the drive component slides into the second sealing groove and passes through the second clamping plate. The drive component is provided with a tapered section corresponding to the receiving groove.

[0037] Based on the above technical solutions, preferably, multiple first clamping plates, rubber blocks and second clamping plates are arranged side by side, and slots are opened on the sides of the first clamping plates, rubber blocks and second clamping plates.

[0038] Both the first connector and the second connector have arc-shaped grooves on their circumferences, and the arc-shaped grooves are concentric with the groove openings.

[0039] Based on the above technical solutions, preferably, the sealing element also includes a guide rail and a support plate, wherein,

[0040] The guide rail is made of elastic material, and one side of the guide rail is connected to the sealing component. The first clamping plate slides in conjunction with the guide rail.

[0041] The support plate slides with the guide rail, and the support plate extends between two adjacent rubber blocks.

[0042] Based on the above technical solutions, preferably, a detection component is also included, which comprises a shaft cylinder, an end cylinder, and a sensor, wherein...

[0043] The shaft sleeve is inserted into the rubber block, and one end of the shaft sleeve with an opening passes through the second clamping plate. A leakage hole is opened on the circumference of the shaft sleeve.

[0044] The end tube is set on the other end of the shaft tube, the end tube is inserted into the first clamping plate, and the end tube is provided with a contact hole;

[0045] The sensor is connected to the opening of the shaft cylinder.

[0046] Furthermore, the present invention provides an oil tank sealing method, which utilizes the aforementioned oil tank outlet device and includes the following steps:

[0047] S1. Set the upper guide, lower guide or thrust shaft of the oil tank to fit the unit;

[0048] S2. Weld the smaller diameter end of the reducer to the oil tank and connect the reducer to the oil tank.

[0049] S3. Clamp the rubber block with the first clamping plate and the second clamping plate, and install the bolts. Then clamp the oil tank cable with the adjacent rubber blocks and assemble the whole into the large diameter end of the reducer.

[0050] S4. The bolts are pre-tightened, and the rubber block is clamped and squeezed by the first and second clamping plates to seal the circumference of the oil tank cable. At the same time, the rubber block expands and embeds into the annular groove to achieve fixation.

[0051] S5. After prolonged use, the rubber block is further tightened by the expansion component to ensure a sealing effect.

[0052] The hydro-generator set, oil tank outlet sealing device, and application method of the present invention have the following advantages over the prior art:

[0053] (1) By setting up a reducer to connect the unit's oil tank and tightening the seal inside the reducer, the seal is conveniently integrated and fixed with the unit. At the same time, the tightening can also seal the oil tank cable. One end of the oil tank cable can be placed in the oil tank and connected to a sensor for detection, while the other end is led out for data transmission. After the seal is tightened, there is a gap between it and the stepped surface of the reducer, which leaves space to store a certain amount of lubricating oil. The reducer is equipped with a heating element corresponding to this gap, which facilitates heating the lubricating oil through the heating element and then transferring the heat to the seal. This helps to ensure the performance of the seal in low-temperature environments. Overall, it has the advantages of good sealing effect and is suitable for automated detection of the turbine oil tank.

[0054] (2) By setting up an oil blocking component, it can block the small diameter end of the reducing pipe through the sealing component, which is beneficial for heat insulation, so as to avoid the lubricating oil from affecting the stability of the sealing component after the temperature rise. By setting up an oil pump, a certain amount of lubricating oil can be drawn from the sealing oil tank into the space between the sealing component and the sealing component at the beginning of the unit operation, so as to serve as a heat transfer medium for temperature control in the later stage.

[0055] (3) In the structure of the oil tank cable outlet device, by setting the first clamp and the second clamp, the rubber block can be squeezed to expand. When the oil tank cable passes through the rubber block, the rubber block will tightly fit the oil tank cable due to expansion, so as to ensure the reliability of the sealing structure. At the same time, the expansion of the rubber block also realizes the fitting with the annular groove in the variable diameter pipe, so as to ensure the stability of the sealing installation.

[0056] (4) By providing an expansion member in the seal, after the seal has been used for a long time and its performance has deteriorated, the expansion member can be used to further tighten the rubber block, so as to avoid the failure of the seal fixing structure and the sealing structure of the oil tank cable, and effectively improve the service life of the seal.

[0057] (5) By setting guide rails and support plates in the sealing element, several first clamping plates and support plates can be connected in series by the guide rails, which facilitates positioning during assembly and improves the convenience of assembly into the variable diameter pipe. At the same time, the guide rails are made of elastic material. Since there are several rubber blocks, when the first clamping plate and the second clamping plate are tightened by bolts, the compression amount of different rubber blocks is different. Therefore, the displacement of two adjacent clamping plates is different. However, when the guide rails are made of deformable structure, it will not affect the compression of the rubber blocks and can ensure that all clamping plates move into place to ensure the expansion and sealing of the oil tank cable.

[0058] (6) By setting up a detection component, which adopts the same installation structure as the oil tank cable, and the detection component has a contact hole on the end tube, the detection component is more sensitive to temperature than the oil tank cable and can transmit temperature changes to the rubber block more quickly. In this way, when the outlet structure fails, the lubricating oil will first enter the leakage hole between the detection component and the rubber block, and then be detected by the sensor. This is beneficial to detect the fault in time before the unit lubrication fails, thereby effectively improving the stability of the application. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a structural diagram of the hydro-generator set of the present invention;

[0061] Figure 2 This is a perspective view of the connection structure between the variable diameter pipe and the sealing element of the hydro-generator set of the present invention;

[0062] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0063] Figure 4 This is a structural diagram showing the separation of the variable diameter pipe and the sealing element in the hydro-generator set of the present invention;

[0064] Figure 5 This is an exploded structural diagram of the sealing component of the hydro-generator set of the present invention;

[0065] Figure 6 This is an exploded structural diagram of the sealing component and detection assembly of the hydro-generator set of the present invention;

[0066] Figure 7 This is a front view of the variable diameter pipe of the hydro-generator set of the present invention;

[0067] Figure 8 For the present invention Figure 7 Sectional view along the AA direction;

[0068] Figure 9 For the present invention Figure 7 Cross-sectional view along the BB direction;

[0069] Figure 10 For the present invention Figure 9 Enlarged view of the structure at point B;

[0070] Figure 11This is a perspective view of the guide body of the hydro-generator set of the present invention;

[0071] Figure 12 This is a perspective view of the connection structure between the guide rail and the sealing component of the hydro-generator set of the present invention;

[0072] Figure 13 This is a perspective view of the detection component of the hydro-generator set of the present invention;

[0073] Figure 14 This is a cross-sectional view of the detection component of the hydro-generator set of the present invention;

[0074] Figure 15 This is a structural diagram of the reducing pipe in Embodiment 2 of the present invention;

[0075] Figure 16 This is a structural diagram of the rubber block in Embodiment 2 of the present invention;

[0076] In the diagram: 1. Generator unit; 11. Part to be lubricated; 2. Oil tank; 21. Sleeve; 3. Reducer; 301. Annular groove; 302. Stepped surface; 4. Heating element; 5. Sealing element; 51. First clamping plate; 52. Rubber block; 53. Second clamping plate; 54. Bolt; 55. Expansion piece; 551. Guide body; 5511. First connecting body; 5512. Connecting rod; 5513. Second connecting body; 552. Driving component; 5521. Tapered section; 56. Guide rail; 57. Support plate; 501. Receiving groove; 502. Threaded groove; 503. First sealing groove; 504. Second sealing groove; 505. Groove opening; 506. Arc groove; 6. Oil blocking component; 61. Sealing component; 62. Oil pump; 7. Detection assembly; 71. Shaft cylinder; 72. End cylinder; 73. Sensor; 701. Leakage hole; 702. Contact hole. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0078] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0079] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0081] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0082] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0083] Example 1:

[0084] like Figures 1-14 As shown, the hydro-generator set, oil tank outlet sealing device and its application method of the present invention include a generator set 1, an oil tank 2, a reducing pipe 3, a heating element 4, a sealing element 5, an oil blocking element 6 and a detection component 7.

[0085] like Figures 1-4 and Figure 8 As shown, unit 1 is used to convert water energy into mechanical energy, and then output electrical energy; oil tank 2 is used to store lubricating oil for the lubrication of the components of unit 1.

[0086] As described above, unit 1 is a hydro-generator unit, and oil tank 2 is used for bearing lubrication of the generator unit.

[0087] like Figures 1-4 As shown, the reducer 3 is a stepped pipe. The small diameter end of the reducer 3 is connected to the oil tank 2, and the large diameter end of the reducer 3 is a free end. An annular groove 301 is provided on the inner wall of the large diameter end of the reducer 3. The sealing element 5 is inserted into the large diameter end of the reducer 3, and the sealing element 5 is a tensioning structure to cooperate with the annular groove 301 for fixation. The oil tank cable passes through the sealing element 5 and is discharged.

[0088] As described above, the oil tank 2 is used to hold lubricating oil, the reducer 3 is connected to the oil tank 2, the seal 5 is installed inside the reducer 3, and the oil tank cable is used for data detection in the oil tank. One end of the oil tank cable is connected to various sensors in the oil tank, and the other end of the oil tank cable is led out from the oil tank 2 through the seal 5, thereby realizing data transmission.

[0089] Specifically, the reducer 3 is configured as a stepped tubular structure. The small diameter end of the reducer 3 is connected to the outer wall of the oil groove 2, and the large diameter end of the reducer 3 is provided with an annular groove 301. In this way, after the seal 5 is installed into the large diameter end of the reducer 3, it can be fitted with the annular groove 301 by expansion, thereby achieving the connection and fixation between the seal 5 and the oil groove 2.

[0090] Meanwhile, the expansion and fixing structure of the sealing element 5 also achieves expansion, fixing and sealing of the oil tank cable to avoid oil leakage from the outlet.

[0091] The smaller diameter end of the reducing pipe 3 is welded and fixed to the outer wall of the oil tank 2.

[0092] like Figures 7-9 As shown, the heating element 4 is embedded in the large diameter end of the reducing pipe 3; the sealing element 5 does not abut against the stepped surface 302 of the reducing pipe 3 in the sealed state, and the gap between the end of the heating element 4 and the stepped surface 302 corresponds to the gap between the end of the sealing element 5 and the stepped surface 302.

[0093] As described above, when the seal 5 is installed inside the reducer 3, it can abut against the stepped surface 302. As the seal 5 is compressed and expanded, the end of the seal 5 will move away from the stepped surface 302 to form a gap. The heating element 4, which is set in response to this gap, can heat the lubricating oil and then transfer the heat to the seal 5 through the lubricating oil. This allows the temperature of the seal 5 to be adjusted in low-temperature environments. In low-temperature environments, this helps to ensure that the physical properties of the seal 5 do not change, thereby avoiding the problem of sealing failure and oil leakage, and thus ensuring the stability of the application.

[0094] like Figure 1 , Figure 8 and Figure 9As shown, the oil blocking component 6 includes a sealing component 61 and an oil pump 62. There are two oil tanks 2, which are relatively isolated from each other. One oil tank 2 is used to hold lubricating oil and is connected to the reducer 3. The other oil tank 2 is used to hold sealing lubricating oil. The sealing component 61 is connected to the sealing component 5 and is embedded in the small diameter end of the reducer 3. The oil tank cable passes through the sealing component 61. The inlet end of the oil pump 62 is connected to the oil tank 2 used to hold the sealing lubricating oil through a pipeline. The outlet end of the oil pump 62 is connected to the large diameter end of the reducer 3 through a pipeline. The outlet port of the pipeline corresponds to the gap between the end of the sealing component 5 and the stepped surface 302.

[0095] As described above, the sealing member 61 of the oil blocking member 6 is used to separate the oil groove 2 containing the lubricating oil from the sealing member 5. In this way, after the lubricating oil has been used for a long time and the temperature rises, the heat will not affect the sealing member 5, so as to avoid the performance of the sealing member 5 being affected by temperature.

[0096] Furthermore, due to the setting of the sealing element 61, a gap is formed between the sealing element 61 and the sealing element 5. In order to ensure that the heating element 4 can play a heating role, an oil pump 62 is set to deliver sealing lubricating oil into this gap. The sealing lubricating oil is contained in an independent oil tank 2. After the sealing element 5 is installed and tightened, the oil pump 62 draws the sealing lubricating oil into the gap between the sealing element 61 and the sealing element 5. In this way, when the heating element 4 is working, the heat can be evenly heated to the sealing element 5 through the sealing lubricating oil.

[0097] Specifically, the lubricating oil used for lubrication and the lubricating oil used for sealing are the same type of oil. In this way, if the sealing component 61 fails, the lubricating oil on both sides will mix and will not affect normal use.

[0098] like Figure 1 As shown, the unit 1 includes a component 11 to be lubricated. Among the two oil tanks 2, the oil tank 2 for holding lubricating oil has an open structure on one side and is attached to the component 11 to be lubricated; the oil tank 2 for holding sealing lubricating oil is integrated inside the oil tank 2 for holding lubricating oil; the reducing pipe 3 is provided for the oil tank 2 for holding sealing lubricating oil, and at least one oil tank cable extends into the oil tank 2 for holding sealing lubricating oil, and the oil tank 2 for holding sealing lubricating oil is provided with a sleeve 21 corresponding to the oil tank cable;

[0099] As described above, the component 11 to be lubricated is not limited to various shafts, bearings or other moving parts of the unit 1. It is used to accommodate the oil groove 2 for lubrication, with one side open and close to the component 11 to be lubricated, so that it can be lubricated by lubricating oil when the component 11 to be lubricated moves.

[0100] Furthermore, a smaller oil tank 2 is also provided inside the oil tank 2. This smaller oil tank 2 is used to hold the sealing lubricating oil to provide the sealing lubricating oil to the oil pump 62.

[0101] Furthermore, in the oil tank cable used for data transmission within the oil tank 2, at least one cable is introduced into the smaller oil tank 2 to connect to the oil level sensor, thereby detecting the amount of sealing lubricating oil and ensuring the normal operation of the component.

[0102] Furthermore, the smaller oil tank 2 is provided with a sleeve 21, which is used to attach the oil tank cable to ensure the stability of the cable.

[0103] like Figures 5-9 As shown, the oil tank outlet device serves as a sealing element 5. The sealing element 5 includes a first clamping plate 51, a rubber block 52, a second clamping plate 53, a bolt 54, and an expansion element 55. The rubber block 52 is disposed on the side of the first clamping plate 51 away from the unit 1. The rubber block 52 is partially fitted into the annular groove 301. The second clamping plate 53 is disposed on the other side of the rubber block 52. The bolt 54 passes through the second clamping plate 53 and the rubber block 52, and the bolt 54 is threadedly connected to the first clamping plate 51. The expansion element 55 is disposed inside the rubber block 52 and is used to expand the rubber block 52.

[0104] As described above, the sealing element 5 is configured as a clamping extrusion expansion element structure. When in use, the oil tank cable passes through the rubber block 52, and the first clamping plate 51 and the second clamping plate 53 are distributed opposite to each other on both sides of the rubber block 52. At this time, by tightening the bolt 54, the first clamping plate 51 and the second clamping plate 53 can be moved closer to each other, thereby squeezing the rubber block 52. When the rubber block 52 expands to the side, it can squeeze the oil tank cable tightly, and at the same time, it can be embedded in the annular groove 301 to achieve connection and fixation with the reducing pipe 3.

[0105] After prolonged use, especially under the influence of temperature changes, the properties of the rubber block 52 are prone to change, leading to insufficient sealing. At this time, the rubber block 52 can be further expanded by the expansion member 55 to ensure that the rubber block 52 is tightly pressed against the oil tank cable, thereby ensuring the service life and stability of the structure.

[0106] like Figure 9 and Figure 10 As shown, the expansion member 55 includes a guide body 551 and a drive member 552. The guide body 551 is located inside the rubber block 52. One end of the guide body 551 facing the first clamping plate 51 is set with a conical structure, and a receiving groove 501 is provided in the middle section of the guide body 551. The drive member 552 is inserted into the guide body 551. The rubber block 52 and the expansion member 55 are injection molded into an integral structure. A portion of the rubber block 52 is located in the receiving groove 501. The drive member 552 is used to squeeze the portion of the rubber block 52 located in the receiving groove 501.

[0107] As described above, the expansion member 55 is configured as two parts: a guide body 551 and a driving member 552. The driving member 552 is located inside the guide body 551 and is injection molded into an integral structure with the rubber block 52.

[0108] In practical applications, since one end of the guide body 551 is set as a conical structure, when the first clamping plate 51 and the second clamping plate 53 are relatively close, the rubber block 52 will spread better due to the guidance of the conical structure, so that the rubber block 52 can fit tightly against the oil tank cable, thereby ensuring a good sealing effect.

[0109] The guide body 551 is provided with a receiving groove 501, which allows the rubber block 52 to enter and fit the drive member 552 during injection molding. This increases the thickness of the rubber block 52. When the drive member 552 moves, the local rubber block 52 that has entered the receiving groove 501 can be squeezed outward. This can compensate for the decrease in sealing effect of the rubber block 52 after long-term use, and prevent oil leakage. This helps to extend the service life of the seal 5.

[0110] like Figure 10 and Figure 11 As shown, the guide body 551 includes a first connecting body 5511, a connecting rod 5512, and a second connecting body 5513. The first connecting body 5511 is located inside the rubber block 52. The end of the first connecting body 5511 facing the first clamping plate 51 is set with a tapered structure, and the first connecting body 5511 is provided with a connected threaded groove 502 and a first sealing groove 503. The connecting rod 5512 is located on the side of the first connecting body 5511 away from the unit 1. There are multiple connecting rods 5512, and the receiving groove 501 is multiple connecting rods 5512. The gap; the second connecting body 5513 is located on the side of the connecting rod 5512 away from the first connecting body 5511, the second connecting body 5513 has a second sealing groove 504, and the second connecting body 5513 is fitted with the second clamping plate 53; one end of the driving member 552 is slidably engaged with the first sealing groove 503 and is threadedly connected with the threaded groove 502, the other end of the driving member 552 is slidably engaged with the second sealing groove 504 and passes through the second clamping plate 53, and the driving member 552 is provided with a tapered section 5521 corresponding to the receiving groove 501.

[0111] As described above, the guide body 551 is arranged sequentially from the first clamping plate 51 to the second clamping plate 53 as a first connecting body 5511, a connecting rod 5512, and a second connecting body 5513, wherein a conical structure is provided on the first connecting body 5511 for guiding the expansion of the rubber block 52.

[0112] The second connector 5513 is connected to the first connector 5511 through multiple connecting rods 5512, thereby naturally forming a receiving groove 501. By changing the structure or number of connecting rods 5512, the diffusion direction of the rubber block 52 can be controlled when the expansion member 55 moves, so as to accurately compensate for the location prone to failure.

[0113] Furthermore, the first connector 5511 has a threaded groove 502 and a first sealing groove 503, and the second connector 5513 has a second sealing groove 504. The first sealing groove 503 and the second sealing groove 504 are used to assemble the drive component 552 and achieve sealing. In this way, when the rubber block 52 is injection molded, the injection plastic will only enter through the gaps between the multiple connecting rods 5512 to achieve filling and ensure that it can be extruded by the drive component 552 later.

[0114] Specifically, the drive member 552 is screwed into the threaded groove 502, and the other end passes through the second clamping plate 53. At the same time, the position of the drive member 552 corresponding to the receiving groove 501 is set as a tapered section 5521. Thus, when the drive member 552 is rotated, it can move axially because the drive member 552 is engaged with the threaded groove 502, so as to squeeze the rubber block 52 through the tapered section 5521.

[0115] like Figure 5 and Figure 6 As shown, multiple first clamping plates 51, rubber blocks 52, and second clamping plates 53 are arranged side by side, and slots 505 are opened on the sides of the first clamping plates 51, rubber blocks 52, and second clamping plates 53; arc-shaped grooves 506 are provided on the circumferential surfaces of the first connector 5511 and the second connector 5513, and the arc-shaped grooves 506 and the slots 505 are concentrically arranged.

[0116] As described above, multiple first clamping plates 51, rubber blocks 52, and second clamping plates 53 are provided, and slots 505 are opened on the side. In this way, two first clamping plates 51, two rubber blocks 52, and two second clamping plates 53 can be spliced ​​together to clamp the oil tank cable, which improves the convenience of assembly.

[0117] Furthermore, both the first connector 5511 and the second connector 5513 are provided with arc-shaped grooves 506, so that the same first connector 5511 or second connector 5513 can correspond to a maximum of four bolts 54, so as to ensure that when the rubber block 52 is squeezed, it can be tightened in the direction of the bolts 54.

[0118] like Figure 8 , Figure 9 and Figure 12As shown, the sealing element 5 also includes a guide rail 56 and a support plate 57. The guide rail 56 is made of elastic material, and one side of the guide rail 56 is connected to the sealing element 61. The first clamping plate 51 is slidably engaged with the guide rail 56. The support plate 57 is slidably engaged with the guide rail 56, and the support plate 57 extends between two adjacent rubber blocks 52.

[0119] As described above, the sealing element 5 includes a guide rail 56 and a support plate 57.

[0120] Specifically, there are two guide rails 56. One side of the guide rail 56 is connected to the sealing component 61, which makes it convenient to install the sealing component 61 into the small diameter end of the reducer 3.

[0121] Specifically, the guide rail 56 is used to connect the first clamping plate 51 in series, so that multiple first clamping plates 51 can clamp the rubber block 52 to complete the shaping, and improve the convenience of installation into the large diameter end of the variable diameter pipe 3.

[0122] Furthermore, a support plate 57 is connected in series on the guide rail 56. Specifically, the two guide rails 56 are set at the edges of the sealing member 61, while the support plate 57 is clamped at the edges of two adjacent rubber blocks 52. Since the edges of the rubber blocks 52 are not suitable for setting the expansion member 55, the edges of the rubber blocks 52 can be further compressed by setting the support plate 57 to ensure the sealing effect.

[0123] like Figure 7 , Figure 8 , Figure 13 and Figure 14 As shown, the detection assembly 7 includes a shaft cylinder 71, an end cylinder 72, and a sensor 73. The shaft cylinder 71 is inserted into the rubber block 52, and one end of the shaft cylinder 71 with an opening passes through the second clamping plate 53. A leakage hole 701 is opened on the circumferential surface of the shaft cylinder 71. The end cylinder 72 is disposed on the other end of the shaft cylinder 71, and the end cylinder 72 is inserted into the first clamping plate 51. A contact hole 702 is opened on the end cylinder 72. The sensor 73 is connected to the opening of the shaft cylinder 71.

[0124] As described above, the detection component 7 is used to detect the sealing performance of the seal 5;

[0125] The detection component 7 is inserted into the seal 5 via a shaft cylinder 71. The part of the shaft cylinder 71 corresponding to the rubber block 52 has a leakage hole 701. The shaft cylinder 71 has a hollow structure and a sensor 73 is connected to its end.

[0126] Specifically, the shaft cylinder 71 is made of metal, which has a better heat conduction effect than the oil tank cable, and is therefore more susceptible to temperature effects. This makes the seal between the shaft cylinder 71 and the rubber block 52 more prone to failure. Therefore, after the seal fails and lubricating oil enters, the lubricating oil will enter the shaft cylinder 71 through the leakage hole and can be detected by the sensor 73. However, at this time, there will be no lubricating oil leakage problem. This allows for timely maintenance before the oil leakage occurs due to seal failure, thereby ensuring the normal operation of the unit.

[0127] Furthermore, the other end of the shaft cylinder 71 is provided with an end cylinder 72, and the end cylinder 72 is provided with a contact hole 702. This increases the contact area between the detection component 7 and the lubricating oil, making it easier to conduct heat and detect the risk of leakage in advance.

[0128] Furthermore, the sealing lubricating oil can be heated by the heating element 4, and the detection component 7 can transfer heat more quickly in a short time. This can cause the rubber block 52 around the detection component 7 to quickly differentiate its properties from the rubber block 52 around the oil tank cable, thereby adjusting the leakage detection cycle.

[0129] The oil tank sealing method of the present invention, using the above-mentioned oil tank outlet device, includes the following steps:

[0130] S1. Set the oil tank 2 to fit the upper guide, lower guide or thrust shaft of the unit 1;

[0131] S2. Weld the smaller diameter end of the reducer 3 to the oil tank 2, and connect the reducer 3 to the oil tank 2.

[0132] S3. Clamp the rubber block 52 with the first clamping plate 51 and the second clamping plate 53, and install the bolt 54. Then clamp the oil tank cable with the adjacent rubber block 52, and assemble the whole into the large diameter end of the reducer 3.

[0133] S4. The bolt 54 is pre-tightened, and the rubber block 52 is clamped and squeezed by the first clamping plate 51 and the second clamping plate 53 to seal the periphery of the oil tank cable. At the same time, the rubber block 52 expands and embeds into the annular groove 301 to achieve fixation.

[0134] S5. After prolonged use, the rubber block 52 is further tightened by the expansion member 55 to ensure a sealing effect.

[0135] Example 2:

[0136] The difference between this embodiment and Embodiment 1 is that the expansion member 55 is not provided, and the structure of the rubber block 52 has been changed;

[0137] like Figure 15 and Figure 16As shown, the clamping plate and rubber block 52 are still set inside the reducing pipe 3. In this example, the cross-sectional shape of the reducing pipe 3 is not set to a rectangle, but to a circle or any other shape.

[0138] Furthermore, the rubber blocks 52 are not only arranged in parallel, but also stacked in an overlapping shape. This can meet customized needs, especially when the variable diameter pipe 3 is interfered with by the turbine unit structure, making it impossible to form a regular cylindrical shape. In some places, the number of stacked rubber blocks 52 can be appropriately reduced or increased to meet the structural requirements of the variable diameter pipe 3 and the corresponding installation requirements.

[0139] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydro-generator set, characterized in that: It includes a generator set (1), an oil tank (2), a reducing pipe (3), a heating element (4), a sealing element (5), and an oil blocking element (6), among which, The unit (1) is used to convert water energy into mechanical energy, and then output electrical energy; The oil tank (2) is used to store lubricating oil for the lubrication of the components of the unit (1); The reducing pipe (3) is a stepped pipe. The small diameter end of the reducing pipe (3) is connected to the oil tank (2). The large diameter end of the reducing pipe (3) is a free end, and an annular groove (301) is provided on the inner wall of the large diameter end of the reducing pipe (3). The heating element (4) is embedded in the large diameter end of the reducing pipe (3); The sealing element (5) is inserted into the large diameter end of the reducing pipe (3), and the sealing element (5) is an expansion structure to cooperate with the annular groove (301) for fixation. The oil groove cable passes through the sealing element (5) and is discharged. The sealing element (5) does not abut against the stepped surface (302) of the reducing pipe (3) in the sealed state, and the heating element (4) corresponds to the gap between the end of the sealing element (5) and the stepped surface (302); The oil blocking component (6) includes a plugging component (61) and an oil pump (62). There are two oil tanks (2), which are relatively isolated from each other. One oil tank (2) is used to hold lubricating oil and is connected to the reducing pipe (3). The other oil tank (2) is used to hold sealing lubricating oil. The plugging component (61) is connected to the sealing component (5) and is embedded in the small diameter end of the reducing pipe (3). The oil tank cable passes through the plugging component (61). The inlet end of the oil pump (62) is connected to the oil tank (2) used to hold sealing lubricating oil through a pipeline. The outlet end of the oil pump (62) is connected to the large diameter end of the reducing pipe (3) through a pipeline. The outlet port of the pipeline corresponds to the gap between the end of the sealing component (5) and the stepped surface (302).

2. The hydro-generator set as described in claim 1, characterized in that: The unit (1) includes components (11) to be lubricated, wherein, Of the two oil tanks (2), the oil tank (2) used to hold lubricating oil has an open structure on one side and is attached to the component (11) to be lubricated. The oil trough (2) for holding the sealing lubricating oil is integrated inside the oil trough (2) for holding the lubricating oil. The reducing pipe (3) is provided for the oil tank (2) used to hold the sealing lubricating oil, and at least one of the oil tank cables extends into the oil tank (2) used to hold the sealing lubricating oil, and the oil tank (2) used to hold the sealing lubricating oil is provided with a sleeve (21) corresponding to the oil tank cable.

3. An oil tank outlet device, applied to the hydro-generator set as described in claim 1, characterized in that: The oil tank outlet device serves as the sealing element (5), which includes a first clamping plate (51), a rubber block (52), a second clamping plate (53), a bolt (54), and an expansion element (55). The rubber block (52) is provided on the side of the first clamping plate (51) away from the unit (1); The rubber block (52) is partially fitted into the annular groove (301); The second clamp (53) is disposed on the other side of the rubber block (52); The bolt (54) passes through the second clamping plate (53) and the rubber block (52), and the bolt (54) is connected to the first clamping plate (51) by threaded engagement; The expansion member (55) is disposed inside the rubber block (52), and the expansion member (55) is used to expand the rubber block (52). The expansion member (55) includes a guide body (551) and a drive member (552). The guide body (551) is located inside the rubber block (52). One end of the guide body (551) facing the first clamping plate (51) is set as a conical structure, and a receiving groove (501) is provided in the middle section of the guide body (551). The drive member (552) is inserted into the guide body (551). The rubber block (52) and the expansion member (55) are injection molded into an integral structure. A portion of the rubber block (52) is located in the receiving groove (501), and the drive member (552) is used to squeeze the portion of the rubber block (52) located in the receiving groove (501).

4. The oil tank outlet device as described in claim 3, characterized in that: The guide body (551) includes a first connector (5511), a connecting rod (5512), and a second connector (5513), wherein, The first connector (5511) is located inside the rubber block (52). The end of the first connector (5511) facing the first clamp (51) is set as a conical structure, and the first connector (5511) is provided with a connected threaded groove (502) and a first sealing groove (503). The connecting rod (5512) is located on the side of the first connecting body (5511) away from the unit (1). There are multiple connecting rods (5512), and the receiving groove (501) is the gap between the multiple connecting rods (5512). The second connector (5513) is disposed on the side of the connecting rod (5512) away from the first connector (5511), the second connector (5513) is provided with a second sealing groove (504), and the second connector (5513) is fitted with the second clamping plate (53); One end of the drive member (552) is slidably engaged with the first sealing groove (503) and is connected to the threaded groove (502) by thread. The other end of the drive member (552) is slidably engaged with the second sealing groove (504) and passes through the second clamping plate (53). The drive member (552) is provided with a tapered section (5521) corresponding to the receiving groove (501).

5. The oil tank outlet device as described in claim 4, characterized in that: The first clamping plate (51), the rubber block (52) and the second clamping plate (53) are arranged in multiple rows, and the first clamping plate (51), the rubber block (52) and the second clamping plate (53) are all provided with slots (505) on their sides. Both the first connector (5511) and the second connector (5513) are provided with arc-shaped grooves (506) on their circumferential surfaces, and the arc-shaped grooves (506) are concentrically arranged with the slot opening (505).

6. The oil tank outlet device as described in claim 3 or 4, characterized in that: The sealing element (5) further includes a guide rail (56) and a support plate (57), wherein, The guide rail (56) is made of elastic material, and one side of the guide rail (56) is connected to the sealing member (61). The first clamping plate (51) is slidably engaged with the guide rail (56). The support plate (57) is slidably engaged with the guide rail (56), and the support plate (57) extends between two adjacent rubber blocks (52).

7. The oil tank outlet device as described in any one of claims 3 or 4, characterized in that: It also includes a detection component (7), which comprises a shaft cylinder (71), an end cylinder (72), and a sensor (73), wherein, The shaft sleeve (71) is inserted into the rubber block (52), and one end of the shaft sleeve (71) with an opening passes through the second clamping plate (53). A leakage hole (701) is opened on the circumferential surface of the shaft sleeve (71). The end tube (72) is disposed on the other end of the shaft tube (71), the end tube (72) is inserted into the first clamping plate (51), and a contact hole (702) is provided on the end tube (72). The sensor (73) is connected to the opening of the cylinder (71).

8. A method for sealing an oil tank, using the oil tank outlet device as described in claim 3, characterized in that, Includes the following steps: S1. The oil tank (2) is set to fit against the upper guide, lower guide or thrust shaft of the unit (1); S2. Weld the small diameter end of the reducing pipe (3) to the oil tank (2) and connect the reducing pipe (3) to the oil tank (2); S3. Clamp the rubber block (52) with the first clamping plate (51) and the second clamping plate (53), and install the bolt (54). Then clamp the oil tank cable with the adjacent rubber block (52) and assemble it into the large diameter end of the reducer (3). S4. The bolt (54) is pre-tightened, and the rubber block (52) is clamped and squeezed by the first clamping plate (51) and the second clamping plate (53) to seal the circumference of the oil tank cable. At the same time, the rubber block (52) expands and embeds into the annular groove (301) to achieve fixation. S5. After prolonged use, the rubber block (52) is further tightened by the expansion member (55) to ensure a sealing effect.

Images