Water inlet pipeline connecting structure and hydroelectric generating set

Abstract

The application relates to the technical field of water turbine units, and discloses a water inlet pipeline connecting structure and a water turbine unit, the water inlet pipeline connecting structure comprises a sealing ring, a supporting assembly and a water inlet pipeline used for communicating with a water delivery pipeline, the sealing ring comprises a first end portion, a sealing portion and a second end portion which are coaxially arranged in sequence, the first end portion is arranged in the water inlet pipeline and abuts against the inner wall of the water inlet pipeline, the second end portion is arranged in the water delivery pipeline and abuts against the inner wall of the water delivery pipeline, and the sealing portion abuts against the water inlet end of the water inlet pipeline and the water outlet end of the water delivery pipeline on the two sides in the axial direction of the sealing portion; and the supporting assembly is located on the outer side of the water inlet pipeline and is used for supporting the water delivery pipeline. The application has the beneficial effect that the connection position of the water inlet pipeline and the water delivery pipeline has good sealing effect, the potential energy loss of water flow is avoided, and the power generation efficiency of the water turbine unit is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydroelectric generating set, in particular to a water inlet pipeline connecting structure and hydroelectric generating set. BACKGROUND

[0002] At present, the hydroelectric generating set is used to convert the water flow with potential energy from rivers, lakes and other high places to the low places, and then convert the mechanical energy of the water turbine into the mechanical energy of the generator, and finally convert the mechanical energy into the electric energy.

[0003] In the actual power generation process, the water inlet pipeline of the hydroelectric generating set is connected with the water conveying pipeline outside to guide the water flow into the hydroelectric generating set for power generation. The existing technology generally adopts the waterproof tape to seal the outer surface of the connection between the water conveying pipeline and the water inlet pipeline of the hydroelectric generating set. The sealing effect is poor. At the same time, the connection between the water conveying pipeline and the water inlet pipeline lacks support, and under the impact of the water flow, the position of the connection between the water conveying pipeline and the water inlet pipeline is prone to deflection, thereby affecting the sealing performance of the connection, reducing the utilization rate of the water flow potential energy, and further reducing the power generation efficiency of the hydroelectric generating set. SUMMARY

[0004] The present application aims to provide a water inlet pipeline connecting structure and hydroelectric generating set, and aims to solve the technical problem of low power generation efficiency of the hydroelectric generating set caused by poor sealing performance of the connection between the water inlet pipeline and the water conveying pipeline in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides a water inlet pipeline connecting structure, which comprises a sealing ring, a support assembly and a water inlet pipeline for communicating with a water conveying pipeline. The sealing ring comprises a first end portion, a sealing portion and a second end portion arranged coaxially in sequence. The first end portion is arranged in the water inlet pipeline and abuts against the inner wall of the water inlet pipeline. The second end portion is arranged in the water conveying pipeline and abuts against the inner wall of the water conveying pipeline. The sealing portion abuts against the water inlet end of the water inlet pipeline and the water outlet end of the water conveying pipeline on both sides along the axial direction thereof. The support assembly is located outside the water inlet pipeline and is used to support the water conveying pipeline.

[0006] Furthermore, the inner wall of the water inlet pipeline is circumferentially provided with at least two positioning groove blocks. A through groove is formed in each positioning groove block along the axial direction of the water inlet pipeline. A positioning protrusion corresponding in position and same in number as the positioning groove blocks is arranged on the first end portion. The positioning protrusion is clamped in the through groove. Screws are arranged in the side wall of the water inlet pipeline and communicate with the through grooves, and are used to fixedly connect the positioning groove blocks and the positioning protrusions.

[0007] Further, the support assembly comprises a first connecting rod and a second connecting rod arranged on both sides of the water inlet pipe and parallel to the axis of the water inlet pipe, and the first connecting rod and the second connecting rod are provided with support rings with adjustable installation height, and the axis of the support ring is parallel to the axis of the water inlet pipe.

[0008] Further, vertical grooves are formed in the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are provided with first guide portions and second guide portions at both ends of the support ring, the first guide portion and the second guide portion are respectively arranged in the grooves, the side wall of the first guide portion is provided with a positioning plate, and an adjusting screw is threadedly connected to the positioning plate, and the axis of the adjusting screw is perpendicular to the top surface of the first connecting rod.

[0009] Further, the side wall of the second guide portion is provided with a guide plate, and a guide rod parallel to the axis of the adjusting screw is fixed to the second connecting rod and arranged in the guide hole of the guide plate.

[0010] Further, the top of the adjusting screw is provided with a connecting block, and the side wall of the connecting block is uniformly provided with a plurality of protrusions.

[0011] Further, the outer wall of the second end is provided with a plurality of convex strips.

[0012] Further, the outer wall of the water inlet pipe is provided with an elastic rope for fixed connection with the screw.

[0013] Further, the sealing ring is made of rubber or silicone material.

[0014] The application also provides a hydroelectric generating set comprising the water inlet pipe connecting structure, and further comprising a machine table, a water turbine, a speed regulating motor, a generator and a control module, the water turbine, the speed regulating motor and the generator are electrically connected to the control module, and the water inlet pipe is located outside the machine table and communicates with the water turbine.

[0015] Compared with the prior art, the water inlet pipe connecting structure and the hydroelectric generating set have the beneficial effects that the first end of the sealing ring is arranged in the water inlet pipe and abuts against the inner wall of the water inlet pipe, the second end is arranged in the water outlet pipe and abuts against the inner wall of the water outlet pipe, meanwhile, the two side surfaces of the sealing portion along the axial direction abut against the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe respectively, the connection between the water inlet pipe and the water outlet pipe is sealed, in addition, the support assembly for supporting the water outlet pipe is arranged outside the water inlet pipe, so that the position of the water outlet pipe is prevented from being deviated under the impact of water flow, the sealing effect of the connection between the water outlet pipe and the water inlet pipe is further ensured, the potential energy loss of water flow is avoided, and the power generation efficiency of the hydroelectric generating set is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an assembly schematic diagram of a hydroelectric generating set according to an embodiment of the present application;

[0017] Figure 2 is a structural schematic diagram of a water inlet pipeline according to an embodiment of the present application;

[0018] Figure 3 is a partial enlarged view of A in Figure 2

[0019] Figure 4 is a structural schematic diagram of a sealing ring according to an embodiment of the present application.

[0020] In the figure, 1, a hydroelectric generating set; 11, a machine table, 12, a water turbine; 13, a speed regulating motor; 14, a generator; 15, a control module; 2, a water inlet pipeline; 21, a positioning groove block; 211, a through groove; 22, a screw; 23, an elastic rope; 3, a sealing ring; 31, a first end portion; 311, a positioning protrusion; 32, a sealing portion; 33, a second end portion; 331, a convex strip; 4, a support assembly; 41, a first connecting rod; 42, a second connecting rod; 421, a guide rod; 43, a support ring; 431, a first guide portion; 4311, a positioning plate; 4312, an adjusting screw; 4313, a connecting block; 432, a second guide portion; 4321, a guide plate. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0022] In the description of the present application, it should be understood that the positions or location relationships indicated by the terms "upper", "lower", "front", "back", "inner", "outer" and the like in the present application are based on the positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices and elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In the description of the present application, it should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0024] As Figure 1 ​As shown, the water inlet pipe connecting structure of the preferred embodiment of the present application is used in connection with the water turbine set 1 to guide the external water flow into the water turbine set 1 for power generation, which comprises a sealing ring 3, a supporting assembly 4 and a water inlet pipe 2 for communicating with the water delivery pipe, the water delivery pipe is not shown in the figure; the sealing ring 3 comprises a first end portion 31, a sealing portion 32 and a second end portion 33 arranged coaxially in sequence, the first end portion 31 is arranged in the water inlet pipe 2 and abuts against the inner wall of the water inlet pipe, the second end portion 33 is arranged in the water delivery pipe and abuts against the inner wall of the water delivery pipe, the sealing portion 32 abuts against the water inlet end of the water inlet pipe 2 and the water outlet end of the water delivery pipe respectively along the two side surfaces in the axial direction thereof; during installation, the water inlet end of the water inlet pipe 2 and the water outlet end of the water delivery pipe are connected by bolts to press and seal the sealing portion 32, and the sealing ring 3 is made of soft material such as rubber or silica gel; at the same time, in order to avoid the position of the water delivery pipe from being deviated under the impact of the water flow, further, the supporting assembly 4 for supporting the water delivery pipe is arranged outside the water inlet pipe 2.

[0025] In order to facilitate the fixation of the sealing ring 3, in the present embodiment, as shown in Figure 2 , at least two positioning groove blocks 21 are arranged circumferentially on the inner wall of the water inlet pipe 2, a through groove 211 is formed on each positioning groove block 21 along the axial direction of the water inlet pipe 2, and a positioning protrusion 311 corresponding in position and same in number as the positioning groove blocks 21 is arranged on the first end portion 31, during installation, the positioning protrusion 311 is clamped in the through groove 211, and in order to facilitate the fixed connection of the positioning groove block 21 and the positioning protrusion 311, a screw 22 communicating with the through groove 211 is arranged through the side wall of the water inlet pipe 2, as shown in Figure 4 , a threaded hole connected with the screw 22 is formed on the positioning protrusion 311, and in the present embodiment, the positioning protrusion 311 is in the shape of L. Further, since the screw 22 is small and is easy to be lost during installation and disassembly, the elastic rope 23 for fixed connection with the screw 22 is arranged on the outer wall of the water inlet pipe 2.

[0026] Further, in order to facilitate the disassembly of the sealing ring 3, a plurality of convex strips 331 are arranged on the outer wall of the second end portion 33, the convex strips 331 are arranged linearly, which can increase the friction between the second end portion 33 and the hand, so as to facilitate the pulling out of the sealing ring 3 from the water inlet pipe 2.

[0027] Further, the supporting assembly 4 assists in supporting the output pipe, which ensures that the output pipe and the water inlet pipe 2 are coaxial and avoids the installation position from being deviated, as shown in Figure 3 , the supporting assembly 4 comprises a first connecting rod 41 and a second connecting rod 42 located on both sides of the water inlet pipe 2 and parallel to the axis of the water inlet pipe 2, wherein the first connecting rod 41 and the second connecting rod 42 are fixedly connected with the outer wall of the water turbine set 1, and the first connecting rod 41 and the second connecting rod 42 are provided with a supporting ring 43 with adjustable installation height, and the axis of the supporting ring 43 is parallel to the axis of the water inlet pipe 2, as shown inFigure 3 As shown, the support ring 43 is a semi-circular ring structure, and the inner side thereof can be attached to the outer wall of the water conveying pipe. Since the installation height of the support ring 43 is adjustable, the installation of the water conveying pipe can be finely adjusted.

[0028] Specifically, in order to facilitate the adjustment of the installation height of the support ring 43 and facilitate the guiding of the support ring 43 during the adjustment, a vertical sliding groove is formed on each of the first connecting rod 41 and the second connecting rod 42. The support ring 43 is provided with a first guiding part 431 and a second guiding part 432 at two ends thereof, and the first guiding part 431 and the second guiding part 432 are respectively arranged in the sliding grooves. The side wall of the first guiding part 431 is provided with a positioning plate 4311, and an adjusting screw 4312 is threadedly connected to the positioning plate 4311. The axis of the adjusting screw 4312 is perpendicular to the top surface of the first connecting rod 41. During the adjustment, the lower end surface of the adjusting screw 4312 is in contact with the top surface of the first connecting rod 41. By rotating the adjusting screw 4312, the height of the support ring 43 changes, and the first guiding part 431 and the second guiding part 432 slide in the sliding grooves, respectively.

[0029] Further, since the adjusting screw 4312 is located on one side of the support ring 43, in order to avoid the support ring 43 from being deflected towards the side close to the adjusting screw 4312 due to the gravity of the water conveying pipe during the adjustment, a guiding plate 4321 is arranged on the side wall of the second guiding part 432. A guiding rod 421 parallel to the axis of the adjusting screw 4312 is fixed on the second connecting rod 42, and the guiding rod 421 is arranged in the guiding hole of the guiding plate 4321. In order to facilitate the rotation of the adjusting screw, a connecting block 4313 is arranged on the top of the adjusting screw 4312, and a plurality of protrusions are uniformly arranged on the side wall of the connecting block 4313.

[0030] During the assembly of the water inlet pipe connecting structure of the hydroelectric generating set provided by the application, the first end part 31 of the sealing ring 3 is coaxial with the water inlet pipe 2, and the positioning protrusion 311 is inserted into the through groove 211 of the positioning groove block 21. The positioning protrusion 311 and the positioning groove block 21 are fixed by the screw 22, so that one side surface of the sealing part 32 is attached to the water inlet end of the water inlet pipe 2. Then, the water conveying pipe is sleeved on the second end part 33, and the outer wall of the water conveying pipe is attached to the inner side surface of the support ring 43. The support height of the support ring 43 is adjusted by rotating the adjusting screw 4312, so that the water conveying pipe and the water inlet pipe 2 are coaxial. Then, the water conveying pipe is moved along the axial direction, so that the water outlet end of the water conveying pipe is attached to the other side surface of the sealing part 32. The water inlet pipe 2 and the water conveying pipe are fixed by the bolt, so that the sealing part 32 is deformed by extrusion to seal the connection between the water inlet pipe 2 and the water conveying pipe.

[0031] The application also provides a hydroelectric generating set, which comprises the water inlet pipe connecting structure described above, and further comprises a machine base 11, a water turbine 12, a speed regulating motor 13, a generator 14 and a control module 15, wherein the water turbine 12, the speed regulating motor 13 and the generator 14 are electrically connected with the control module 15, as shown in the figure. Figure 1 When the hydroelectric generating set is working, the water inlet pipe 2 is communicated with the external water conveying pipe to guide the water flow into the water turbine 12, so as to drive the water turbine 12 to rotate and generate mechanical energy to drive the generator 14 to generate electricity, and the speed regulating motor 13 outside the water turbine 12 is used to adjust the rotating speed of the water turbine 12 to provide the electric energy with a frequency meeting the power supply requirement, and the speed regulating motor 13 is internally provided with a black start function, so that the speed regulating motor 13 can be automatically restarted when losing power supply.

[0032] In summary, the water inlet pipe connecting structure and the hydroelectric generating set provided by the embodiments of the application have the following advantages: the first end portion of the sealing ring is arranged in the water inlet pipe and abuts against the inner wall of the water inlet pipe, the second end portion of the sealing ring is arranged in the water conveying pipe and abuts against the inner wall of the water conveying pipe, the two side surfaces of the sealing portion along the axial direction abut against the water inlet end of the water inlet pipe and the water outlet end of the water conveying pipe, respectively, so that the connection position of the water inlet pipe and the water conveying pipe is sealed, the support assembly is arranged outside the water inlet pipe to support the water conveying pipe, so that the position of the water conveying pipe is prevented from being deviated under the impact of the water flow, the sealing effect of the connection position of the water conveying pipe and the water inlet pipe is further ensured, the potential energy loss of the water flow is avoided, and the power generation efficiency of the hydroelectric generating set is improved.

[0033] The above description is only the preferred embodiments of the application, and it should be pointed out that, for those skilled in the art, some improvements and replacements can be made without departing from the technical principles of the application, and these improvements and replacements should also be considered as the protection scope of the application.

Claims

1. A water inlet pipe connection structure, characterized in that: The utility model provides a water supply pipeline sealing device, including sealing ring (3), support component (4) and the water inlet pipeline (2) for communicating with water supply pipeline, the sealing ring (3) including coaxial setting first end (31) in proper order, sealing portion (32) and second end (33), the first end (31) is set in the water inlet pipeline (2) and is in contact with the inner wall of water inlet pipeline, the second end (33) is set in the water supply pipeline and is in contact with the inner wall of water supply pipeline, the sealing portion (32) along its axial both sides are in contact with the water inlet end of water inlet pipeline (2) and the water outlet end of water supply pipeline respectively, the support component (4) is located the outside of water inlet pipeline (2) and is used to support water supply pipeline, The support component (4) includes first connecting rod (41) and second connecting rod (42) located on both sides of the water inlet pipeline (2) and arranged parallel to the axis of the water inlet pipeline (2), the first connecting rod (41) and the second connecting rod (42) are provided with a support ring (43) with adjustable mounting height, and the axis of the support ring (43) is parallel to the axis of the water inlet pipeline (2). The first connecting rod (41) and the second connecting rod (42) are each provided with a vertical sliding groove, the support ring (43) is provided with a first guide portion (431) and a second guide portion (432) at both ends, the first guide portion (431) and the second guide portion (432) are respectively arranged in the sliding groove, the side wall of the first guide portion (431) is provided with a positioning plate (4311), the positioning plate is threadedly connected with an adjusting screw (4312), and the axis of the adjusting screw (4312) is perpendicular to the top surface of the first connecting rod (41).

2. The water inlet pipe connection structure according to claim 1, characterized by: The inner wall of the water inlet pipeline (2) is circumferentially provided with at least two positioning groove blocks (21), each of the positioning groove blocks (21) is provided with a through groove (211) along the axial direction of the water inlet pipeline (2), the first end (31) is provided with positioning protrusions (311) corresponding in position and equal in number to the positioning groove blocks (21), the positioning protrusions (311) are clamped in the through grooves (211), and the side wall of the water inlet pipeline (2) is provided with screws (22) in communication with the through grooves (211) and used for fixedly connecting the positioning groove blocks (21) and the positioning protrusions (311).

3. The water inlet pipe connection structure according to claim 1, wherein: The side wall of the second guide portion (432) is provided with a guide plate (4321), the second connecting rod (42) is fixedly provided with a guide rod (421) parallel to the axis of the adjusting screw (4312), and the guide rod (421) is arranged in a guide hole in the guide plate (4321).

4. The water inlet pipe connection structure according to claim 3, wherein: The top of the adjusting screw (4312) is provided with a connecting block (4313), and the side wall of the connecting block (4313) is uniformly provided with a plurality of protrusions.

5. The water inlet pipe connection structure according to claim 2, wherein: The outer wall of the second end (33) is provided with a plurality of convex strips (331).

6. The water inlet pipe connection structure according to claim 2, wherein: The outer wall of the water inlet pipeline (2) is provided with elastic ropes (23) used for fixedly connecting the screws (22).

7. The water inlet pipe connection structure according to claim 1, wherein: The sealing ring (3) is made of rubber or silicone.

8. A hydroelectric power unit comprising a draft tube connection structure according to any one of claims 1 to 7, characterized in that: It also includes organic platform (11), water turbine (12), speed regulating motor (13), generator (14) and control module (15), the water turbine (12), speed regulating motor (13), generator (14) are electrically connected with the control module (15), the inlet water pipeline (2) is located in the outer wall of the platform (11) and is communicated with the water turbine (12), the support assembly (4) is installed on the platform (11).

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