Ball valve foundation mounting structure and hydroelectric power system

Abstract

The application provides a ball valve foundation mounting structure and a hydroelectric power generation system. The ball valve foundation mounting structure comprises a valve body, a valve body having a ball valve foot, the ball valve foot being provided with a bolt through hole; a mounting foundation, the mounting foundation being fixed with a ball valve foundation plate, the ball valve foundation plate having a through hole opposite to the bolt through hole; a polytetrafluoroethylene plate, the polytetrafluoroethylene plate being arranged on one side of the ball valve foundation plate facing the ball valve foot, the polytetrafluoroethylene plate having a mounting hole opposite to the through hole, and the ball valve foot being mounted on the polytetrafluoroethylene plate; and a foot screw, one end of the foot screw being embedded in the inside of the mounting foundation, the other end of the foot screw penetrating through the through hole, the bolt through hole and the mounting hole and being screwed with a nut at the end. The application reduces the phenomenon that the relative sliding displacement between the ball valve foot and the ball valve foundation plate gradually decreases when the ball valve is shut down or stopped, and avoids the phenomenon that the mounting foundation is cracked and damaged due to the gradual decrease of the relative sliding displacement.

Description

Technical Field

[0001] This application relates to the field of hydropower technology, specifically to a ball valve foundation installation structure and a hydropower system. Background Technology

[0002] Ball valves used in hydroelectric power systems are primarily used to control the flow of water into the turbine. The impact force of the water flow drives the turbine runner, ultimately causing the generator rotor to rotate and generate electricity. Currently, when the system is started, the ball valve slides downstream due to the impact of the water flow. After shutdown, the impact force disappears, and the ball valve, due to its restoring elastic deformation, slides upstream and returns to its original position. This sliding phenomenon provides a buffering effect, thereby reducing the stress on the ball valve's foundation (concrete). Summary of the Invention

[0003] The following content is based on in-depth research by the inventor and should not be considered prior art known to those skilled in the art.

[0004] Through in-depth research, the inventors discovered that, for some unknown reason, there is a phenomenon where the relative sliding displacement between the ball valve foot and the foundation plate gradually decreases when the ball valve is turned off or stopped. As the relative sliding displacement decreases, the buffer stroke is shortened, which leads to a surge in stress on the concrete.

[0005] Taking the relative sliding displacement between the ball valve foot and the foundation plate when the ball valve of a power station is shut down or stopped as an example, the relative sliding displacement of the ball valve gradually decreases from 1.6mm to 0.05mm. As the ball valve foundation displacement gradually decreases, the stress on the foundation concrete increases, and the foundation concrete may crack, thus affecting the safe operation of the pumped storage power station. Maintenance will lead to the pumped storage power station being shut down for a long time and ultimately incur huge economic costs.

[0006] After in-depth research, the inventors discovered that due to seasonal temperature changes, the uneven thermal expansion of concrete causes an increase in the compressive stress (normal pressure) between the ball valve foot and the concrete of the support pier and the foundation pad, which in turn leads to an increase in friction and a gradual decrease in the displacement of the ball valve foundation.

[0007] Therefore, this application provides a ball valve foundation installation structure and a hydroelectric power generation system, aiming to solve the technical problem that the relative sliding displacement between the ball valve foot and the foundation plate gradually decreases when the ball valve is shut down or stopped.

[0008] In a first aspect, this application provides a ball valve base mounting structure, including:

[0009] The valve body has a ball valve foot, and the ball valve foot is provided with a bolt through hole;

[0010] The installation base is fixed with a ball valve base plate, which has through holes that are opposite to the bolt through holes.

[0011] A polytetrafluoroethylene (PTFE) plate is provided on the side of the ball valve base plate facing the ball valve foot. The PTFE plate has mounting holes opposite to the perforations, and the ball valve foot is mounted on the PTFE plate.

[0012] Anchor bolts have one end embedded inside the installation foundation, and the other end passes through a through hole, bolt hole, and mounting hole, with a nut screwed into its end.

[0013] In some embodiments of this application, the distance between the ball valve foot and the ball valve base plate is greater than or equal to 3 mm and less than or equal to 5 mm.

[0014] In some embodiments of this application, the thickness of the polytetrafluoroethylene sheet is greater than or equal to 5 mm and less than or equal to 15 mm.

[0015] In some embodiments of this application, the valve body has a shaft hole, and the ball valve base plate is provided with a first blocking part and a second blocking part on the side facing the ball valve foot.

[0016] The first and second blocking parts are arranged along the axial direction of the shaft hole, and the polytetrafluoroethylene plate is located between the first and second blocking parts.

[0017] In some embodiments of this application, the first blocking part and the second blocking part are located at both ends of the ball valve base plate, respectively.

[0018] In some embodiments of this application, the polytetrafluoroethylene sheet has a first end adjacent to the first blocking portion and a second end adjacent to the second blocking portion;

[0019] The distance between the first end and the first blocking part is greater than or equal to 1 mm and less than or equal to 3 mm, and the distance between the second end and the second blocking part is greater than or equal to 1 mm and less than or equal to 3 mm.

[0020] In some embodiments of this application, a bushing is installed in the bolt through hole, and the bushing is sleeved on the anchor bolt;

[0021] The diameter of the mounting hole is larger than the outer diameter of the bushing.

[0022] In some embodiments of this application, the mounting base is a concrete block.

[0023] In some embodiments of this application, the anchor bolt has a fixing plate at one end embedded inside the mounting foundation;

[0024] The fixing plate and the anchor bolt are coaxially arranged, and the diameter of the fixing plate is larger than the diameter of the anchor bolt.

[0025] In some embodiments of this application, the ball valve base plate has multiple fixing feet on the side opposite to the ball valve feet, and the valve body has a shaft hole for mounting a valve.

[0026] The fixing feet are embedded inside the mounting base, and the extension direction of the fixing feet is parallel to the axis of the shaft hole.

[0027] In some embodiments of this application, the valve body has a shaft hole for mounting a valve, and the bolt through hole is elliptical;

[0028] The long side of the elliptical bolt hole is perpendicular to the axis of the shaft hole.

[0029] Secondly, this application provides a hydroelectric power generation system, including the ball valve foundation mounting structure as described in the first aspect.

[0030] This application involves installing a polytetrafluoroethylene (PTFE) plate on the side of the ball valve base plate facing the ball valve foot, and mounting the ball valve foot on the PTFE plate. The valve body is then fixed using foot bolts and nuts. Because the PTFE plate reduces the friction between the ball valve base plate and the ball valve foot, it mitigates the phenomenon of the relative sliding displacement between the ball valve foot and the ball valve base plate gradually decreasing when the ball valve is turned off or stopped. This avoids the phenomenon of cracking and damage to the mounting base caused by the gradual decrease in relative sliding displacement. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0032] Figure 1 This is an isometric view of a ball valve base mounting structure provided in the embodiments of this application;

[0033] Figure 2 This is a left view of a ball valve foundation mounting structure provided in the embodiments of this application;

[0034] Figure 3 This application Figure 2 A schematic diagram of a cross-section at point AA;

[0035] Figure 4 This application Figure 3 An enlarged schematic diagram of point A in the middle;

[0036] Figure 5 This is a schematic diagram of ball valve displacement monitoring after adopting the ball valve foundation installation structure according to the embodiment of this application;

[0037] Figure 6 This is a schematic diagram of a structure of a polytetrafluoroethylene plate and a ball valve base plate provided in an embodiment of this application;

[0038] Figure 7 This is a schematic diagram of a ball valve base plate provided in an embodiment of this application;

[0039] Figure 8 This is a schematic diagram of a polytetrafluoroethylene sheet provided in the embodiments of this application;

[0040] Figure 9 This application Figure 3 A schematic diagram of a cross-section at point BB.

[0041] Among them, 10 is the valve body, 11 is the ball valve foot, 111 is the bolt through hole, 12 is the shaft hole, 20 is the mounting base, 21 is the ball valve base plate, 211 is the fixing foot, 212 is the through hole, 213 is the first blocking part, 214 is the second blocking part, 30 is the polytetrafluoroethylene plate, 301 is the first end, 302 is the second end, 31 is the mounting hole, 40 is the foot bolt, 41 is the fixing plate, 42 is the bushing, and 50 is the nut. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0045] This application provides a ball valve foundation installation structure and a hydroelectric power generation system, which is particularly suitable for hydroelectric power generation systems in high-head (water flow height difference of more than 40m) scenarios. The following are detailed descriptions of each.

[0046] First, refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 , Figure 1 This paper shows an isometric view of a ball valve foundation mounting structure according to an embodiment of the present application. Figure 2 A left view of a ball valve foundation mounting structure according to an embodiment of this application is shown. Figure 3 This application shows Figure 2 A schematic diagram of a cross-section at point AA. Figure 4 This application shows Figure 3 An enlarged schematic diagram at point A, showing the ball valve foundation mounting structure including:

[0047] Valve body 10, the valve body 10 has ball valve foot 11, the ball valve foot 11 is provided with bolt through hole 111;

[0048] Mounting base 20, on which a ball valve base plate 21 is fixed, the ball valve base plate 21 having a through hole 212 opposite to the bolt through hole 111;

[0049] A polytetrafluoroethylene (PTFE) plate 30 is provided on the side of the ball valve base plate 21 facing the ball valve foot 11. The PTFE plate 30 has a mounting hole 31 opposite to the through hole 212. The ball valve foot 11 is mounted on the PTFE plate 30.

[0050] Anchor bolt 40, one end of which is embedded inside the mounting base 20, and the other end passes through the through hole 212, the bolt through hole 111 and the mounting hole 31, and a nut 50 is screwed onto its end.

[0051] Specifically, the valve body 10 is the main structure of a ball valve. A water flow channel can be formed inside the valve body 10, and a rotatable valve is installed inside the valve body 10 to open or close the water flow channel. The valve body 10 has ball valve feet 11, and the valve body 10 can be fixed to the base 20 through bolt through holes 111 in the ball valve feet 11 to prevent the valve body 10 from moving long distances due to the large impact force when opening or closing the valve. In some embodiments of this application, the valve body 10 can be composed of a front valve body 10 and a rear valve body 10 joined together. In other embodiments of this application, the valve body 10 can also be composed of an upper valve body 10 and a lower valve body 10 joined together.

[0052] The mounting base 20 provides a reliable mounting structure for the valve body 10. A ball valve base plate 21 is fixed to the mounting base 20. The ball valve base plate 21 has through holes 212 opposite to the bolt through holes 111. After the anchor bolt 40 passes through the through holes 212 of the mounting base plate and the bolt through holes 111 of the ball valve base 11, the valve body 10 can be fixed to the mounting base 20 by screwing a nut 50 onto the end of the anchor bolt 40. For example, the mounting base 20 can be a high-strength concrete block, such as C60 concrete or C100 concrete.

[0053] The polytetrafluoroethylene (PTFE) plate 30 is located between the ball valve base plate 21 and the ball valve foot 11. Due to the advantages of PTFE plate 30, such as high density, non-absorbency, toughness, no resilience, low coefficient of friction, and excellent lubricity, PTFE plate 30 can be used under the most severe working conditions of the ball valve. After long-term use of the ball valve, PTFE plate 30 can still maintain stability. At the same time, during the opening or closing process, PTFE plate 30 can reduce the coefficient of friction between the ball valve foot 11 and the ball valve base plate 21, thereby ensuring the normal sliding of the ball valve.

[0054] In this embodiment, a polytetrafluoroethylene (PTFE) plate 30 is provided on the side of the ball valve base plate 21 facing the ball valve foot 11, and the ball valve foot 11 is installed on the PTFE plate 30. The valve body 10 is fixed by using the foot screw 40 and nut 50. Since the PTFE plate 30 reduces the friction between the ball valve base plate 21 and the ball valve foot 11, the phenomenon of the relative sliding displacement between the ball valve foot 11 and the ball valve base plate 21 gradually decreasing when the ball valve is turned off or stopped is alleviated, thus avoiding the phenomenon of cracking and damage to the mounting base 20 due to the gradual decrease in relative sliding displacement.

[0055] Taking the improved installation structure of the ball valve foundation of a hydropower station as an example, see [reference needed]. Figure 5 , Figure 5A schematic diagram of ball valve displacement monitoring after adopting the ball valve foundation installation structure of the present application embodiment is shown. It can be seen that after adopting the ball valve foundation installation structure of the present application embodiment, the relative sliding displacement between the ball valve foot 11 and the ball valve base plate 21 remains almost unchanged after the ball valve is opened or closed multiple times. Therefore, it can effectively prevent the phenomenon of cracking and damage to the installation base 20 caused by the gradual decrease of the relative sliding displacement.

[0056] In some embodiments of this application, the distance between the ball valve foot 11 and the ball valve base plate 21 is greater than or equal to 3 mm and less than or equal to 5 mm. That is, the height of the PTFE plate 30 surface is 3 mm to 5 mm higher than the height of the ball valve base plate 21 surface, thereby spacing the ball valve foot 11 from the ball valve base plate 21 to ensure that the ball valve foot 11 slides on the PTFE plate 30, while avoiding interference between the ball valve foot 11 and the ball valve base plate 21. Preferably, the thickness of the PTFE plate 30 is greater than or equal to 5 mm and less than or equal to 15 mm.

[0057] In some embodiments of this application, see Figure 6 as well as Figure 7 , Figure 6 This illustration shows a structural diagram of the polytetrafluoroethylene plate 30 and the ball valve base plate 21 in an embodiment of this application. Figure 7 A schematic diagram of a ball valve base plate 21 in an embodiment of this application is shown, wherein the valve body 10 has a shaft hole 12, and a first blocking part 213 and a second blocking part 214 are provided on the side of the ball valve base plate 21 facing the ball valve foot 11. The first blocking part 213 and the second blocking part 214 are arranged along the axial direction of the shaft hole 12, and a polytetrafluoroethylene plate 30 is located between the first blocking part 213 and the second blocking part 214.

[0058] It should be noted that the flow direction of water in the valve body 10 is usually perpendicular to the axis of the shaft hole 12. Therefore, the hydraulic impact force generated on the valve body 10 is in a direction perpendicular to the axis of the shaft hole 12. Consequently, the friction force between the ball valve foot 11 and the polytetrafluoroethylene plate 30 is in a direction perpendicular to the axis of the shaft hole 12. In the above embodiment, since the first blocking part 213 and the second blocking part 214 are arranged along the axial direction of the shaft hole 12, the polytetrafluoroethylene plate 30 is located between the first blocking part 213 and the second blocking part 214. The first blocking part 213 and the second blocking part 214 can effectively restrict the movement of the polytetrafluoroethylene plate 30 in a direction perpendicular to the axis of the shaft hole 12, thereby avoiding the phenomenon that the polytetrafluoroethylene plate 30 slides when the ball valve foot 11 slides on the polytetrafluoroethylene plate 30.

[0059] In some embodiments of this application, for example, in an embodiment where a first blocking portion 213 and a second blocking portion 214 are provided on the side of the ball valve base plate 21 facing the ball valve foot 11, the first blocking portion 213 and the second blocking portion 214 are respectively located at both ends of the ball valve base plate 21, so that the polytetrafluoroethylene plate 30 located between the first blocking portion 213 and the second blocking portion 214 has a sufficiently large area to support the ball valve foot 11.

[0060] Furthermore, in some embodiments of this application, such as an embodiment where a first blocking portion 213 and a second blocking portion 214 are provided on the side of the ball valve base plate 21 facing the ball valve foot 11, see the following... Figure 6 , Figure 7 as well as Figure 8 , Figure 8 A schematic diagram of a polytetrafluoroethylene (PTFE) plate 30 in an embodiment of this application is shown. The PTFE plate 30 has a first end 301 adjacent to a first blocking portion 213 and a second end 302 adjacent to a second blocking portion 214. The distance between the first end 301 and the first blocking portion 213 is greater than or equal to 1 mm and less than or equal to 3 mm, and the distance between the second end 302 and the second blocking portion 214 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0061] It should be noted that, since the ball valve base plate 21 is usually made of carbon steel, under the influence of seasonal temperature changes, the ball valve base plate 21 and the polytetrafluoroethylene plate 30 have different thermal deformation amounts due to their different materials. Therefore, a certain distance is provided between the first blocking part 213 and the first end 301, and between the second blocking part 214 and the second end 302, which can accommodate the temperature deformation phenomenon caused by the different coefficients of thermal expansion of the polytetrafluoroethylene plate 30 and the ball valve base plate 21.

[0062] Furthermore, in some embodiments of this application, see [reference]. Figure 4 A bushing 42 is installed inside the bolt through hole 111, and the bushing 42 is fitted onto the anchor bolt 40. The diameter of the mounting hole 31 is larger than the outer diameter of the bushing 42. The bushing 42 protects the anchor bolt 40, preventing it from directly contacting the ball valve foot 11 during relative sliding and thus avoiding damage to the anchor bolt 40. Simultaneously, because the diameter of the mounting hole 31 is larger than the outer diameter of the bushing 42, interference between the bushing 42 and the PTFE plate 30 is also prevented.

[0063] In some embodiments of this application, the anchor bolt 40 has a fixing plate 41 at one end embedded inside the mounting foundation 20. The fixing plate 41 is coaxially arranged with the anchor bolt 40, and the diameter of the fixing plate 41 is larger than the diameter of the anchor bolt 40. Since the fixing plate 41 is embedded inside the mounting foundation 20 and has a relatively large diameter, it can effectively resist the tilting of the anchor bolt 40.

[0064] In some embodiments of this application, see Figure 9 , Figure 9 This application shows Figure 3 A cross-sectional schematic diagram at point BB shows that the ball valve base plate 21 has multiple fixing feet 211 on the side facing away from the ball valve foot 11. The valve body 10 has a shaft hole 12 for mounting the valve. The fixing feet 211 are embedded inside the mounting base 20, and the extension direction of the fixing feet 211 is parallel to the axis of the shaft hole 12. Specifically, the multiple fixing feet 211 embedded inside the mounting base 20 can further improve the installation firmness of the ball valve base plate 21 on the mounting base 20. At the same time, since the extension direction of the fixing feet 211 is parallel to the axis of the shaft hole 12, the fixing feet 211 can also resist the displacement of the ball valve base plate 21 caused by the impact force of the water flow direction. Understandably, the ball valve base plate 21 can also be fixed to the mounting base 20 by a screw structure.

[0065] In some embodiments of this application, the diameter of the bolt through hole 111 is larger than the diameter of the anchor bolt 40. When the ball valve foot 11 slides relative to the ball valve base plate 21, the anchor bolt 40 does not restrict the relative sliding of the ball valve foot 11, thereby avoiding the phenomenon of relative interference between the ball valve foot 11 and the anchor bolt 40 during the sliding process.

[0066] In other embodiments of this application, the valve body 10 has a shaft hole 12 for mounting a valve, and a bolt through hole 111 is elliptical, with the long side of the elliptical bolt through hole 111 perpendicular to the axis of the shaft hole 12. When the ball valve foot 11 slides relative to the ball valve base plate 21, the relative sliding of the ball valve foot 11 is along the long side of the elliptical bolt through hole 111. Therefore, the foot screw 40 does not restrict the relative sliding of the ball valve foot 11, thereby avoiding the phenomenon of relative interference between the ball valve foot 11 and the foot screw 40 during the sliding process.

[0067] It is worth noting that the above description of the ball valve foundation installation structure is intended to clearly illustrate the implementation and verification process of this application. Those skilled in the art can also make equivalent design modifications under the guidance of this application, for example, setting the bolt through hole 111 as rectangular.

[0068] Furthermore, to better implement the ball valve foundation mounting structure in the embodiments of this application, this application also provides a hydroelectric power generation system based on the ball valve foundation mounting structure, which includes the ball valve foundation mounting structure as described in any of the above embodiments. Since the hydroelectric power generation system in the embodiments of this application possesses all the beneficial effects of the ball valve foundation mounting structure described above due to the inclusion of the ball valve foundation mounting structure, further details are omitted here.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0070] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0071] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0072] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0073] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0074] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0075] The ball valve foundation installation structure and hydroelectric power generation system provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A ball valve foundation mounting structure, characterized in that, include: The valve body has a ball valve foot, and the ball valve foot is provided with a bolt through hole; The mounting base is fixed with a ball valve base plate, which has through holes opposite to the bolt through holes; A polytetrafluoroethylene (PTFE) plate is disposed on the side of the ball valve base plate facing the ball valve foot. The PTFE plate has mounting holes opposite to the through hole, and the ball valve foot is mounted on the PTFE plate. An anchor bolt, one end of which is embedded inside the mounting foundation, and the other end passes through the through hole, the bolt through hole, and the mounting hole, and a nut is screwed onto its end; The valve body has a shaft hole, and the ball valve base plate is provided with a first blocking part and a second blocking part on the side facing the ball valve foot; The first blocking part and the second blocking part are arranged along the axial direction of the shaft hole, and the polytetrafluoroethylene plate is located between the first blocking part and the second blocking part; The first blocking portion and the second blocking portion are located at both ends of the ball valve base plate, and the polytetrafluoroethylene plate has a first end adjacent to the first blocking portion and a second end adjacent to the second blocking portion.

2. The ball valve foundation mounting structure as described in claim 1, characterized in that, The distance between the ball valve foot and the ball valve base plate is greater than or equal to 3mm and less than or equal to 5mm.

3. The ball valve foundation mounting structure as described in claim 1, characterized in that, The thickness of the polytetrafluoroethylene sheet is greater than or equal to 5 mm and less than or equal to 15 mm.

4. The ball valve foundation mounting structure as described in claim 1, characterized in that, The distance between the first end and the first blocking part is greater than or equal to 1 mm and less than or equal to 3 mm, and the distance between the second end and the second blocking part is greater than or equal to 1 mm and less than or equal to 3 mm.

5. The ball valve foundation mounting structure as described in claim 1, characterized in that, A bushing is installed in the bolt through hole, and the bushing is sleeved on the anchor bolt. The diameter of the mounting hole is larger than the outer diameter of the bushing.

6. The ball valve foundation mounting structure as described in claim 1, characterized in that, The installation base is a concrete block.

7. The ball valve foundation mounting structure as described in claim 6, characterized in that, The anchor bolt has a fixing plate at one end embedded inside the mounting foundation; The fixing plate is coaxially arranged with the anchor bolt, and the diameter of the fixing plate is larger than the diameter of the anchor bolt.

8. The ball valve foundation mounting structure as described in claim 6, characterized in that, The ball valve base plate has multiple fixing feet on the side opposite to the ball valve foot, and the valve body has a shaft hole for installing a valve. The fixing foot is embedded inside the mounting base, and the extending direction of the fixing foot is parallel to the axis of the shaft hole.

9. The ball valve foundation mounting structure as described in claim 1, characterized in that, The valve body has a shaft hole for mounting a valve, and the bolt through hole is elliptical. The long side of the bolt through hole is perpendicular to the axis of the shaft hole.

10. A hydroelectric power generation system, characterized in that, Includes the ball valve base mounting structure as described in any one of claims 1 to 9.

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