An efficient connection method for water turbines

Abstract

This invention discloses a high-efficiency connection method for a water turbine, comprising the following steps: a. Installing the water turbine connecting shaft and the water pipe connecting shaft together, the specific steps of which are as follows: First, coaxial bolt holes are set on the water turbine connecting shaft and the water pipe connecting shaft. An insert pipe is set in the middle of one side of the water turbine connecting shaft, and a sleeve is set on one side of the water pipe connecting shaft. Then, a first sealing ring is designed on the water turbine connecting shaft, and a corresponding first sealing groove is set on the water pipe connecting shaft to accommodate the first sealing ring. A second sealing ring is set on the water pipe connecting shaft, and a corresponding second sealing groove is set on the water turbine connecting shaft to accommodate the second sealing ring. Next, an outer packing groove is set on the outer wall of the insert pipe, and the packing is nested in the packing groove. Finally, bolts are inserted into the bolt holes to fix the water turbine connecting shaft and the water pipe connecting shaft together. This method can effectively and efficiently connect the water turbine pipeline to the external water pipe, and significantly improve the sealing performance through multiple sealing methods.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy engineering technology, specifically relating to an efficient connection method for water turbine pipelines and external water pipes in the field of water turbine technology, which has a significant sealing effect. Background Technology

[0002] A water turbine is a power machine that converts the energy of flowing water into rotational mechanical energy; it belongs to the category of turbine machinery within fluid machinery. As early as around 100 BC, a rudimentary form of water turbine—the waterwheel—appeared in China, used for irrigation and driving grain processing equipment. Modern water turbines are mostly installed in hydroelectric power stations to drive generators. In a hydroelectric power station, water from the upstream reservoir is drawn to the water turbine through a water intake pipe, driving the turbine runner to rotate and power the generator. The water that has performed its work is then discharged downstream through the tailrace pipe. The higher the water head and the greater the flow rate, the greater the output power of the water turbine. Currently, water turbine pipelines are generally fixed connections using flanges, which cannot guarantee airtightness. Over long periods of operation, water in the pipeline can easily overflow from the gaps in the flange connections, causing pipeline vibration. Under high pressure, this can affect the stability of the turbine unit's operation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-efficiency connection method for water turbines. This method can effectively connect water turbine pipes to external water pipes and significantly improve sealing performance through multiple sealing methods.

[0004] To achieve the above objectives, the high-efficiency connection method for water turbines described in this invention adopts the following technical solution:

[0005] A high-efficiency connection method for a water turbine includes the following steps:

[0006] a. Install the turbine connecting shaft and the water pipe connecting shaft together, connect the turbine pipe to the turbine connecting shaft, and connect the water pipe connecting shaft to the external water pipe;

[0007] b. The specific steps for installing the turbine connecting shaft and the water pipe connecting shaft are as follows: First, coaxial bolt holes are set on the turbine connecting shaft and the water pipe connecting shaft. An insert pipe is set in the middle of one side of the turbine connecting shaft, and a sleeve is set on one side of the water pipe connecting shaft. Then, a first sealing ring is designed on the turbine connecting shaft, and a corresponding first sealing groove is set on the water pipe connecting shaft to accommodate the first sealing ring. A second sealing ring is set on the water pipe connecting shaft, and a corresponding second sealing groove is set on the turbine connecting shaft to accommodate the second sealing ring. Next, an outer packing groove is set on the outer wall of the insert pipe, and the packing is nested in the packing groove. An inner packing groove is set on the inner wall of the connecting shaft, and the outer packing groove matches the inner packing groove. Finally, bolts are inserted into the bolt holes to fix the turbine connecting shaft and the water pipe connecting shaft together. At this time, the first sealing ring is nested in the first sealing groove, and the second sealing ring is nested in the second sealing groove. The packing is located in the packing cavity formed by the outer packing groove and the inner packing groove, further improving the sealing performance.

[0008] In the above-mentioned efficient connection method for water turbines, the outer packing groove on the insertion tube in step b is a spiral packing groove, and the corresponding inner packing groove on the water pipe connector is also a corresponding spiral packing groove. The outer packing groove on the insertion tube and the packing groove on the water pipe connector form a spiral packing receiving cavity. When the insertion tube of the water turbine connector is inserted into the sleeve of the water pipe connector, the packing is located in the outer packing groove. When it encounters water, the packing expands and enters the inner packing groove of the sleeve to achieve a sealing effect.

[0009] The above-mentioned efficient connection method for water turbines involves a first sealing ring being fitted inside a first sealing ring and a second sealing ring being fitted inside a second sealing groove.

[0010] By adopting the above technical solution, the present invention has the following beneficial effects:

[0011] The efficient connection method for water turbines described in this invention utilizes a packing system between the water pipe connector and the water turbine connector to provide a first layer of sealing. A first sealing ring and a first sealing groove engage to provide a second layer of sealing, and a second sealing groove and a second sealing ring engage to provide a third layer of sealing. The water turbine connector and the water pipe connector are bolted together to connect the external water pipe to the water turbine piping, thus achieving a highly efficient connection and significantly improving sealing performance. This ensures the stability of the water turbine's operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 Figure 1 shows a schematic diagram of the turbine shaft connection structure. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0015] A method for efficient connection of a water turbine includes the following steps: Figure 1 and Figure 2 As shown

[0016] a. Install the turbine connecting shaft 1 and the water pipe connecting shaft 10 together, connect the turbine pipe to the turbine connecting shaft, and connect the water pipe connecting shaft to the external water pipe;

[0017] b. The specific steps for installing the turbine shaft and the water pipe shaft are as follows: First, set coaxial bolt holes on the turbine shaft and the water pipe shaft, then insert the turbine shaft and the water pipe shaft together and tighten them with bolts. A tube 3 is installed in the middle of one side of the turbine shaft, and a sleeve 4 is installed on the other side of the water pipe shaft. A first sealing ring 5 is designed on the turbine shaft, and a first sealing groove is correspondingly provided on the water pipe shaft to accommodate the first sealing ring. A second sealing ring 4 is installed on the water pipe shaft, and a second sealing groove is correspondingly provided on the turbine shaft to accommodate the second sealing ring. An outer packing groove 8 is provided on the outer wall of the tube, and a packing 7 is nested in the packing groove. An inner packing groove 9 is provided on the inner wall of the pipe shaft, and the outer packing groove matches the inner packing groove. Finally, bolts 2 are inserted into bolt holes to fix the turbine shaft and the water pipe shaft together. At this time, the first sealing ring is nested in the first sealing groove, and the second sealing ring is nested in the second sealing groove. The packing is located in the packing cavity formed by the outer and inner packing grooves, further improving the sealing performance. The packing between the water pipe connector and the turbine connector provides the first layer of sealing, i.e., axial sealing. The first sealing ring and the first sealing groove between the water pipe connector and the turbine connector provide the second layer of sealing, i.e., radial first sealing. The second sealing groove and the second sealing ring between the water pipe connector and the turbine connector provide the third layer of sealing, i.e., radial second sealing. The turbine connector and the water pipe connector are bolted together to securely connect the external water pipe to the turbine piping. Thus, the packing provides radial sealing, while the first sealing ring and the first sealing groove, and the second sealing ring and the second sealing groove, provide axial sealing. This double sealing, both radial and axial, significantly improves the sealing effect. This invention not only achieves efficient connection but also greatly improves sealing performance, ensuring the stability of turbine operation.

[0018] In the high-efficiency connection method for water turbines described in this invention, the outer packing groove on the insertion tube in step b is a spiral packing groove, and the corresponding inner packing groove on the water pipe connector shaft is also a corresponding spiral packing groove. The outer packing groove on the insertion tube and the packing groove on the water pipe connector shaft correspond to form a spiral packing receiving cavity. When the insertion tube of the water turbine connector shaft is inserted into the sleeve of the water pipe connector shaft, the packing is located in the outer packing groove. When it encounters water, the packing expands and enters the inner packing groove of the sleeve to achieve a sealing effect. The sealing ring can improve the sealing performance.

[0019] The efficient connection method for water turbines described in this invention includes a first sealing ring 6 inserted inside a first sealing ring to further seal the first sealing ring and the first sealing groove; and a second sealing ring 3 inserted inside a second sealing groove to further seal the first sealing ring and the first sealing groove.

[0020] After the packing of the present invention is installed, the outer diameter of the packing is the same as or slightly smaller than the inner diameter of the sleeve of the water pipe connector shaft, so that the insert with the packing can be inserted into the sleeve. Under the action of seepage water, the packing expands into the inner packing groove of the sleeve to achieve a sealing effect. Since both the packing and the cavity that contains the packing are spiral, one turn of the packing is one seal, so its sealing effect is significant.

[0021] The working principle of this invention is as follows:

[0022] First, the turbine is installed on the turbine shaft, and the external water pipes are installed on the water pipe shaft. Then, the turbine shaft and the water pipe shaft are inserted together and tightened with bolts. At this point, the packing between the water pipe shaft and the turbine shaft provides the first layer of sealing. The first sealing ring and the first sealing groove between the water pipe shaft and the turbine shaft provide the second layer of sealing. The second sealing groove and the second sealing ring between the water pipe shaft and the turbine shaft provide the third layer of sealing. The connection between the turbine shaft and the water pipe shaft with bolts securely connects the external water pipes to the turbine piping. Thus, the packing provides radial sealing, and the first sealing ring and the first sealing groove, as well as the second sealing ring and the second sealing groove, provide axial sealing. This double sealing, both radial and axial, significantly improves the sealing effect. This invention not only achieves efficient connection but also greatly improves sealing performance, ensuring the stability of turbine operation.

[0023] Although embodiments of the present invention have been shown and described, the above descriptions are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A high-efficiency connection method for a water turbine, characterized in that, Includes the following steps: a. Install the turbine shaft (1) and the water pipe shaft (10) together, connect the turbine pipe to the turbine shaft, and connect the water pipe shaft to the external water pipe; b. The specific steps for installing the turbine shaft and the water pipe shaft are as follows: First, coaxial bolt holes are set on the turbine shaft and the water pipe shaft. An insert pipe is set in the middle of one side of the turbine shaft, and a sleeve is set on one side of the water pipe shaft. Then, a first sealing ring (5) is designed on the turbine shaft, and a first sealing groove for accommodating the first sealing ring is set on the water pipe shaft. A second sealing ring is set on the water pipe shaft, and a second sealing groove for accommodating the second sealing ring is set on the turbine shaft. Then, an outer packing groove (8) is set on the outer wall of the insert pipe, and the packing (7) is nested in the packing groove. An inner packing groove (9) is set on the inner wall of the pipe shaft, and the outer packing groove matches the inner packing groove. Finally, bolts (2) are inserted into the bolt holes to fix the turbine shaft and the water pipe shaft together. At this time, the first sealing ring is nested in the first sealing groove, and the second sealing ring is nested in the second sealing groove. The packing is located in the packing cavity formed by the outer packing groove and the inner packing groove, which further improves the sealing performance. The outer packing groove on the insertion tube is a spiral packing groove, and the inner packing groove on the corresponding water pipe connector is also a corresponding spiral packing groove. The outer packing groove on the insertion tube and the packing groove on the water pipe connector form a spiral packing receiving cavity. When the insertion tube of the turbine connector is inserted into the sleeve of the water pipe connector, the packing is located in the outer packing groove. When it encounters water, the packing expands and enters the inner packing groove of the sleeve to achieve a sealing effect. A first sealing ring (6) is fitted inside the first sealing ring, and a second sealing ring is fitted inside the second sealing groove.

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