Ball valve and locking device, mounting system and locking method thereof

Abstract

The invention discloses a ball valve and a locking device, an installation system and a locking method thereof. The ball valve comprises a locking assembly, and one end of the locking assembly penetrates through a ball valve end cover and extends into a leakage stopping ring retreating cavity used for arranging a leakage stopping ring; and the pressure bearing assembly is located in the leakage stopping ring exiting cavity, and the locking assembly penetrates through the pressure bearing assembly and at least can move close to the leakage stopping ring relative to the locking assembly. The sealing device has the beneficial effects that the locking rod can adjust the position relative to the pressure bearing assembly through the connecting part, the pressure bearing assembly directly acts on the leakage stopping ring, sealing failures caused by part gaps and looseness are reduced, the pressure bearing assembly can more accurately apply pressure to the leakage stopping ring through the connecting part, and the sealing effect is improved. Effective sealing of the leakage stopping ring under various working conditions is ensured. The relative position of the locking rod and the pressure bearing assembly can be adjusted through the connecting part of the locking rod, and an operator can adjust the pressure according to needs so as to meet different operation requirements.

Description

Technical Field

[0001] The invention relates to the technical field of ball valve equipment in a hydropower station, in particular to a ball valve and a locking device, a mounting system and a locking method thereof. Background Art

[0002] In a hydroelectric power station, the main function of the ball valve is to open the water inlet so that water can work on the runner and transfer energy. The general conditions for the use of ball valves are:

[0003] 1. Close the ball valve when inspecting the unit during the dry season;

[0004] 2. When the unit encounters an emergency, the sensor senses it and shuts down the unit for protection and closes the ball valve;

[0005] 3. When personnel discover that a safety hazard requires shutdown for processing, they will shut down the machine for maintenance and close the ball valve after reaching an agreement among all parties.

[0006] Because ball valves are directly subjected to hydraulic pressure and impact, wear and maintenance of ball valves are common. Because they are maintenance operations in limited spaces, maintenance inspections are dangerous. As a safety measure for ball valve maintenance, good performance of ball valve mechanical locking is essential. However, the locking of the ball valves of this power station unit is mainly based on the threads of the locking studs. The spring applies pre-tightening force to the threads. The threads are prone to rust in the ball valve environment, so they are prone to slipping during repeated operations, resulting in invalid thread locking. This project specifically designs an improved ball valve mechanical lock to solve this problem. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In order to overcome the problems existing in the related art, the embodiments of the present disclosure provide a ball valve locking device, a ball valve, a ball valve installation system and a ball valve locking method. The technical solution is as follows: In view of the above problems, the present invention is proposed.

[0009] According to a first aspect of an embodiment of the present disclosure, a ball valve locking device is provided, comprising:

[0010] A locking assembly, one end of which passes through the ball valve end cover and extends into a stop ring exit cavity for setting a stop ring; and,

[0011] The pressure-bearing component is located in the exit cavity of the leak-proof ring. The locking component passes through the pressure-bearing component and can at least move closer to the leak-proof ring relative to the locking component.

[0012] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the locking assembly applies pressure to the stop-leak ring through the pressure-bearing assembly, the stop-leak ring can remain stably and reliably locked, can withstand high pressure after being locked, and can continue to maintain the locking function after the locking assembly is damaged, thereby reducing the risk of leakage due to loosening or damage of the locking assembly. The pressure on the stop-leak ring is adjusted by changing the position of the locking assembly, and the locking assembly moves inside the pressure-bearing assembly, so the degree of compression of the stop-leak ring can be adjusted according to actual needs, thereby increasing the scope of application and flexibility of the equipment.

[0013] In one embodiment, the locking assembly includes: a locking rod, one end of which is provided with a connecting portion, the locking rod passes through the pressure-bearing assembly through the connecting portion, and can at least move relative to the locking assembly to approach the leak-proof ring.

[0014] In one embodiment, the connection portion is a thread provided at one end of the locking rod, and the locking rod is connected to the pressure-bearing component via the thread.

[0015] In one embodiment, the locking assembly further comprises a sawtooth thread surrounding one end of the locking rod, and the pressure-bearing assembly is provided with a sawtooth thread groove.

[0016] In one embodiment, the stop ring exit cavity has a first pressure-bearing surface and a second pressure-bearing surface;

[0017] When the pressure-bearing component contacts the first pressure-bearing surface, the distance between the pressure-bearing component and the leak-proof ring is at a maximum value, and the leak-proof ring can be pressed against the second pressure-bearing surface by the pressure-bearing component or the locking component.

[0018] In one embodiment, the distance between the first pressure-bearing surface and the second pressure-bearing surface is D, the width of the pressure-bearing component is d1, the width of the edge of the leak-proof ring is d2; the length of the connecting portion is L; setting:

[0019] L+d2>D-d1; D>d1+d2.

[0020] In one embodiment, the stop-leak ring exit cavity includes a stop-leak ring insertion cavity provided on one side of the ball valve end cover corresponding to the stop-leak ring, the cross section of the stop-leak ring insertion cavity is provided to be non-circular, and the stop-leak ring insertion cavity is adapted to the pressure-bearing component;

[0021] The first pressure-bearing surface is a side surface of the leak-stopping ring insertion cavity away from the leak-stopping ring.

[0022] In one embodiment, the locking assembly comprises a locking rod, a check piece is arranged on the locking rod, and an extension direction of the check piece has at least a component toward the stop ring.

[0023] In one embodiment, the check member includes two groups of L-shaped limit rods symmetrically arranged at both ends of the pressure-bearing component, and a sliding space is formed between the two groups of L-shaped limit rods. The width of the sliding space is greater than the width of the pressure-bearing component and less than the length of the pressure-bearing component.

[0024] In one embodiment, the locking assembly further comprises a position block;

[0025] The position block is fixed on an end of the locking rod away from the stop ring.

[0026] In one embodiment, the positioning block and the pressure-bearing component have the same shape, and projections of their cross sections in the longitudinal direction of the locking rod coincide with each other.

[0027] In one embodiment, the locking bar is provided with scales.

[0028] According to a second aspect of an embodiment of the present disclosure, there is provided a ball valve, comprising:

[0029] Ball valve housing; and,

[0030] The ball valve end cover is connected to the ball valve shell and forms a leak-proof ring exit cavity capable of accommodating the leak-proof ring with the ball valve shell. The second pressure surface is located on the ball valve shell, and the first pressure surface is located on the ball valve end cover.

[0031] According to a third aspect of an embodiment of the present disclosure, a ball valve installation system is provided, comprising:

[0032] The water inlet mechanism comprises a joint, and the water inlet mechanism is connected to the end cover of the ball valve through the joint; the locking rod passes through the joint.

[0033] In one embodiment, a mounting chamber is provided on a side of the joint away from the leak-proof ring, and an elastic member is provided in the mounting chamber;

[0034] One end of the elastic member is connected to the locking rod, and the other end is connected to the installation chamber, and can generate a force to force the locking rod away from the leak-proof ring.

[0035] In one embodiment, a locking housing is fixed in the mounting chamber;

[0036] A limiting ring is arranged on the locking rod, the locking rod passes through the locking housing and the limiting ring is located inside the locking housing;

[0037] One end of the elastic member is connected to the limiting ring, and the other end is connected to the inner end of the locking shell.

[0038] In one embodiment, the water inlet mechanism further includes a water inlet pipe, a joint is fixed to the end of the water inlet pipe, and the water inlet pipe is connected to the end cover of the ball valve through the joint.

[0039] In one embodiment, the scale is located outside of the mounting chamber.

[0040] According to a fourth aspect of an embodiment of the present disclosure, a ball valve locking method is provided, comprising:

[0041] Pass the ball valve mechanism through the locking assembly and make its inner end contact the stop ring in the stop ring exit cavity;

[0042] A pressure-bearing component capable of squeezing the leak-proof ring and resting the leak-proof ring on the inner side wall of the exit cavity is arranged at the inner end of the locking component.

[0043] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0045] Figure 1 It is a schematic diagram of the internal structure of a ball valve locking device according to an exemplary embodiment.

[0046] Figure 2 It is a schematic diagram of the overall structure of a ball valve locking device according to an exemplary embodiment.

[0047] Figure 3 It is a schematic exploded view of a locking assembly of a ball valve locking device according to an exemplary embodiment.

[0048] Figure 4 FIG. 1 is a schematic diagram of a sawtooth thread of a ball valve locking device according to an exemplary embodiment.

[0049] Figure 5 It is a schematic diagram of a leak-proof ring exit cavity of a ball valve locking device according to an exemplary embodiment.

[0050] Figure 6 Schematic diagram of an L-shaped limit rod structure of a ball valve locking device according to an exemplary embodiment.

[0051] Figure 7 The figure is a schematic diagram showing the position of a position block of a ball valve locking device according to an exemplary embodiment.

[0052] Figure 8 It is a schematic diagram of the scale position of a ball valve locking device according to an exemplary embodiment.

[0053] Fig. 9 It is a schematic diagram of the overall structure of a ball valve according to an exemplary embodiment.

[0054] Fig.10 It is a schematic diagram of the internal structure of a ball valve installation system according to an exemplary embodiment.

[0055] Fig.11 It is a schematic diagram of the overall structure of a ball valve locking system according to an exemplary embodiment. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0058] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0059] The locking of the ball valve mainly relies on the thread of the locking stud. The spring applies pre-tightening force to the thread. The thread is easy to rust in the ball valve environment, so it is easy to slip when repeatedly operated, resulting in invalid thread locking. This prevents the situation where there is no oil pressure when the maintenance seal is put into operation when there is a problem with the oil pressure device. Because the volute, expansion joint, and cone water pipe are all limited spaces, and the water pressure at the water inlet is very huge, there are many safety hazards in maintenance. It is not easy for the staff to escape, and it is particularly difficult for personnel to rescue. If there is a problem with the seal, it will cause the ball valve to leak, which directly threatens the life safety of the internal maintenance personnel. More seriously, it may cause the plant to be flooded, causing huge economic losses to the power station. Therefore, the stable execution of the mechanical locking device is very important for the power station, and no mistakes can be made.

[0060] In order to solve the above technical problems, the present disclosure proposes a ball valve locking device.

[0061] Example 1

[0062] Reference Figure 1 , which is the first embodiment of the present invention, provides a ball valve locking device.

[0063] like Figure 1 As shown, the ball valve locking device includes:

[0064] The locking assembly 100 has one end passing through the ball valve end cover 500 and extending into the stop-leak ring exit cavity 301 for setting the stop-leak ring 300; and,

[0065] The pressure-bearing component 200 is located in the leak-proof ring exit cavity 301 , and the locking component 100 passes through the pressure-bearing component 200 and can at least move relative to the locking component 100 to approach the leak-proof ring 300 .

[0066] Among them, the ball valve end cover 500 is a part of the ball valve, which is used to close the ball valve body to ensure that the fluid does not leak when flowing in the pipeline. It is usually connected to the ball valve housing to form a sealed cavity. The ball valve end cover 500 is connected to the ball valve housing to form a cavity that can accommodate the leak-proof ring 300. The end cover is not only a sealing component, it also needs to withstand the pressure from the fluid and work closely with other components (such as the leak-proof ring 300 and the pressure-bearing component 200) to ensure the sealing of the entire device;

[0067] The stop ring 300 is an annular sealing element installed in the ball valve, and its main function is to prevent fluid leakage. It is usually located in the key sealing position of the ball valve. It has sufficient elasticity and pressure resistance to maintain good sealing performance under various working conditions. The material selection usually includes corrosion-resistant and high-temperature resistant synthetic rubber or metal materials;

[0068] The stop ring exit cavity 301 is a specific cavity in the ball valve, which is used to accommodate and fix the stop ring, so as to facilitate the installation and replacement of the stop ring.

[0069] The pressure-bearing assembly 200 can at least move relative to the locking assembly 100 to approach the leak-proof ring 300, which may specifically include two possibilities:

[0070] First, after the pressure-bearing component 200 passes through the pressure-bearing component 200 , it can only move gradually closer to the leak-proof ring 300 (that is, move inward) relative to the pressure-bearing component 200 .

[0071] Second, after the pressure-bearing component 200 passes through the pressure-bearing component 200, it can move gradually closer to the stop-leak ring 300 relative to the pressure-bearing component 200, or it can move gradually away from the stop-leak ring 300 relative to the pressure-bearing component 200 (that is, move inward or outward).

[0072] In one embodiment, the locking assembly 100 may be an integrated straight rod structure, the inner end of which passes through the ball valve end cover 500 and can slide relative to the ball valve end cover 500, and the outer end extends to the outer space of the ball valve. Preferably, the main body cross section of the locking assembly 100 is circular.

[0073] In one embodiment, the pressure-bearing component 200 can be a block-shaped structure located in the leak-stop ring exit cavity 301, and a threaded hole is provided on the pressure-bearing component 200. The inner end of the locking component 100 has an external threaded section whose one end cooperates with the threaded hole, and can be screwed into the threaded hole of the pressure-bearing component 200 through the external threaded section, so that the locking component 100 passes through the pressure-bearing component 200.

[0074] Therefore, in the embodiment of the threaded connection, after the pressure-bearing component 200 passes through the pressure-bearing component 200, it can move gradually closer to the stop-leak ring 300 relative to the pressure-bearing component 200, or it can move gradually away from the stop-leak ring 300 relative to the pressure-bearing component 200.

[0075] When the ball valve locking device in this embodiment is working, the following process is performed: the pressure-bearing component 200 is set in the leak-proof ring exit cavity 301, and then the locking component 100 is passed through the pressure-bearing component 200 and connected to the pressure-bearing component 200 through threads. When the outer end of the locking component 100 is rotated by external force, the locking component 100 can continuously approach the leak-proof ring 300 and finally squeeze the leak-proof ring 300 on the inner side wall of the leak-proof ring exit cavity 301. At this time, the reaction force provided by the leak-proof ring 300 directly acts on the locking component 100 as a whole. If the locking assembly 100 continues to be rotated, the leak-stop ring 300 has been compressed and the locking assembly 100 cannot continue to move inward. Therefore, continuing to rotate the locking assembly 100 will cause the pressure-bearing assembly 200 to move in the opposite direction (away from the leak-stop ring 300) through the thread until the pressure-bearing assembly 200 contacts the inner wall of the ball valve end cover 500 and cannot move further. At this point, the ball valve locking device completes the final compression and fixation of the leak-stop ring 300, and at this time, the reaction force provided by the leak-stop ring 300 mainly acts on the small section of the pressure-bearing assembly 200 that protrudes out of the inner end of the locking assembly 100.

[0076] In the embodiment of the present disclosure, when the leak-proof ring 300 is locked, the pressure-bearing component 200 bears the pressure. The shape of the pressure-bearing component 200 can withstand greater pressure to avoid damage to the device. Even if the locking component 100 is damaged by the pressure, the pressure-bearing component 200 does not rotate back to its original position and can still be locked, thereby improving the safety of the device.

[0077] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: the relative position of the locking rod and the pressure-bearing component can be adjusted through the connection part, the pressure-bearing component directly acts on the leak-proof ring, reducing the sealing failure caused by the gap and looseness of the parts, and the connection part enables the pressure-bearing component to apply pressure to the leak-proof ring more accurately, ensuring that the leak-proof ring can be effectively sealed under various working conditions. The relative position of the locking rod and the pressure-bearing component can be adjusted through its connection part, and the operator can adjust the pressure as needed to adapt to different operating requirements.

[0078] Example 2

[0079] Reference Figures 1 to 8 , which is the second embodiment of the present invention, provides a ball valve locking device.

[0080] like Figure 2 As shown, in one embodiment, the locking assembly 100 of the ball valve locking device includes a locking rod 101, one end of which is provided with a connecting portion 101a, the locking rod 101 passes through the pressure-bearing assembly 200 through the connecting portion 101a, and can at least move relative to the locking assembly 100 close to the leak-proof ring 300.

[0081] The locking rod 101 is the main structure of the locking assembly 100 , and may be a round rod made of metal, with the connecting portion 101 a located at the inner end thereof.

[0082] The connecting portion 101a is a portion for connecting with the pressure-bearing component 200, and can pass through the pressure-bearing component 200 to perform one-way inward movement or two-way inward and outward movement. For example, the connecting portion 101a can be set as the threaded structure in Example 1 or other structures that can cause the locking component 100 to perform one-way or two-way inward movement relative to the pressure-bearing component 200.

[0083] In this embodiment, the connecting portion 101a at one end of the locking rod 101 passes through the pressure-bearing component 200. The connecting portion 101a can drive the pressure-bearing component 200 to move toward the stop-leak ring 300 relative to the locking rod 101, thereby squeezing the stop-leak ring 300 to provide thrust and complete the sealing effect of the stop-leak ring 300.

[0084] Furthermore, the connecting portion 101a may adopt the following two different implementations:

[0085] In the first embodiment of the connection portion 101a, the connection portion 101a is preferably a thread 101b provided at one end of the locking rod 101, and the locking rod 101 is connected to the pressure-bearing component 200 via the thread 101b.

[0086] The threaded 101b end of the locking rod 101 is screwed into the corresponding threaded hole in the pressure-bearing component 200 to achieve a fixed connection. By rotating the locking rod 101, the depth of the locking rod 101 relative to the pressure-bearing component 200 can be accurately adjusted, thereby adjusting the pressure on the leak-proof ring 300.

[0087] The threaded connection provides a more secure engagement of the locking rod with the pressure-containing component, allowing for precise pressure adjustment, simplifying maintenance, and improving overall equipment reliability and economic efficiency.

[0088] In the second embodiment of the connection portion 101 a , the connection portion 101 a is preferably surrounded by a sawtooth thread 102 disposed at one end of the locking rod 101 , and the pressure-bearing component 200 is provided with a sawtooth thread groove 201 .

[0089] The sawtooth thread 102 at one end of the locking rod 101 is aligned and inserted into the sawtooth thread groove 201 on the pressure-bearing component 200. The locking rod 101 is rotated to make the sawtooth thread 200 and the sawtooth thread groove 201 engage with each other, so as to achieve a fixed connection between the locking rod 101 and the pressure-bearing component 200. The locking rod 101 is further rotated to adjust its depth or pressure until the desired sealing pressure or position is reached, and the set position is maintained by utilizing the self-locking property of the sawtooth thread 200.

[0090] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the sawtooth thread and the groove can increase the contact area and friction, improve the stability of the connection part, and reduce the loose connection caused by vibration or impact. At the same time, it can provide better anti-slip performance to ensure that the locking rod remains in a fixed position during operation. The sawtooth thread provides a click-type position fixation, and each sawtooth can be used as a fixed point, which is convenient for precise control of the position of the locking rod to achieve the best sealing effect.

[0091] In one embodiment, the stop ring exit cavity 301 has a first pressure-bearing surface M-1 and a second pressure-bearing surface M-2;

[0092] When the pressure-bearing component 200 contacts the first pressure surface M-1, the distance between the pressure-bearing component 200 and the leak-proof ring 300 is at a maximum, and the leak-proof ring 300 can be pressed onto the second pressure surface M-2 by the pressure-bearing component 200 or the locking component 100.

[0093] The first pressure-bearing surface M-1 is another specific surface of the stop-leakage ring 300 in the stop-leakage ring exit cavity 301. When the pressure-bearing component 200 contacts it, the distance between the stop-leakage ring 300 and the pressure-bearing component 200 is the largest.

[0094] The second pressure surface refers to a specific surface inside the ball valve, on which the stop ring 300 is subjected to pressure to achieve a sealing effect, and the fluid is sealed by contacting the stop ring 300. The pressure surface is usually located inside the ball valve housing, and is precisely machined to ensure a perfect fit with the stop ring 300, thereby improving the sealing effect.

[0095] During assembly or maintenance, the pressure-bearing assembly 200 first contacts the first pressure-bearing surface M-1. At this time, the distance between the pressure-bearing assembly and the stop-leak ring 300 is the largest, providing sufficient space for replacing or adjusting the stop-leak ring 300. By operating the locking assembly 100, the pressure-bearing assembly 200 moves toward the second pressure-bearing surface M-2, gradually reducing the distance between the pressure-bearing assembly 200 and the stop-leak ring 300 until the stop-leak ring 300 is effectively pressed and sealed. Once the stop-leak ring 300 is pressed to the second pressure-bearing surface M-2, the position fixation and sealing performance of the sealing ring are ensured.

[0096] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the design of the leak-stop ring exit cavity allows the pressure-bearing component to move freely without contacting the leak-stop ring 300, which facilitates assembly, inspection or replacement of the leak-stop ring 300 and improves maintenance efficiency.

[0097] In one embodiment, the distance between the first pressure-bearing surface M-1 and the second pressure-bearing surface M-2 is D, the width of the pressure-bearing component 200 is d1, the width of the edge of the leak-proof ring 300 is d2; the length of the connecting portion 101a is L; setting:

[0098] L+d2>D-d1; D>d1+d2.

[0099] Before designing or assembling, ensure that the length L of the connection portion 101a plus the width d2 of the edge of the leak-proof ring 300 is greater than the distance D between the first pressure-bearing surface M-1 and the second pressure-bearing surface M-2 minus the width d1 of the pressure-bearing component 200, and D should be greater than the width d1 of the pressure-bearing component plus the width d2 of the leak-proof ring 300. The pressure of the pressure-bearing component 200 on the leak-proof ring 300 is controlled by adjusting the locking rod 101 to meet different operating requirements and ensure the sealing effect.

[0100] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: setting parameters L+d2>D-d1 and D>d1+d2 ensures that the pressure-bearing component can provide sufficient pressure to form an effective seal without over-compressing the leak-proof ring, while avoiding damage caused by excessive compression. Accurate size setting allows the pressure-bearing component to move freely to the optimal position when needed, and can adapt to different operating pressures and environmental conditions.

[0101] In one embodiment, the stop-leak ring exit cavity 301 includes a stop-leak ring insertion cavity 302 provided on a side of the ball valve end cover 500 corresponding to the stop-leak ring 300, the cross section of the stop-leak ring insertion cavity 302 is set to be non-circular, and the stop-leak ring insertion cavity 302 is adapted to the pressure-bearing component 200;

[0102] The first pressure-bearing surface M- 1 is a side surface of the leak-stopping ring insertion cavity 302 away from the leak-stopping ring 300 .

[0103] When installing the stop-ring 300, correctly position it into the non-circular stop-ring insertion cavity 302 to ensure that the stop-ring 300 completely matches the shape of the insertion cavity, thereby achieving precise positioning. During the operation of the ball valve, the pressure-bearing assembly 200 applies pressure by contacting the first pressure-bearing surface M-1 of the stop-ring insertion cavity 302, which is located on the far side of the stop-ring 300, to ensure that the stop-ring 300 moves toward the second pressure-bearing surface under pressure to form a seal.

[0104] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the non-circular design of the leak-stop ring insertion cavity prevents the leak-stop ring from rotating or moving laterally during operation, provides precise guidance and positioning for the leak-stop ring, ensures that the leak-stop ring can be effectively compressed under pressure, and improves the sealing effect.

[0105] Furthermore, the backstop 103 can be implemented in the following two different ways:

[0106] In a first embodiment of the connection portion check member 103 , the locking assembly 100 includes a locking rod 101 , on which the check member 103 is disposed, and an extension direction of the check member 103 has at least a component toward the stop ring 300 .

[0107] When the locking rod 101 presses the pressure-bearing assembly 200 , the check member 103 limits the movement of the locking rod 101 , thereby accurately ensuring that the locking rod 101 moves toward the direction of the leak-proof ring 300 .

[0108] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the check member enables the locking rod to directly apply directional pressure to the leak-proof ring, thereby enhancing the sealing effect and ensuring that consistent pressure and position are maintained even under changing working conditions.

[0109] In the second embodiment of the check member 103, two groups of L-shaped limit rods 103a are symmetrically arranged at both ends of the pressure-bearing component 200, and a sliding space 103b is formed between the two groups of L-shaped limit rods 103a. The width of the sliding space 103b is greater than the width of the pressure-bearing component 200 and less than the length of the pressure-bearing component 200.

[0110] The pressure bearing assembly 200 is installed between the two sets of L-shaped limiting rods 103a to ensure that it is correctly positioned in the formed sliding space 103b. The width of the pressure bearing assembly 200 is smaller than the width of the sliding space 103b, allowing it to slide freely in the two sets of L-shaped limiting rods 202 without disengaging.

[0111] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: the L-shaped limit rod provides a stable support and guide for the pressure-bearing component, ensuring that it moves smoothly within a predetermined path, thereby improving the operational stability and reliability of the entire system. Since the pressure-bearing component moves within the sliding space of the L-shaped limit rod, its contact surface is protected, reducing direct friction and possible loss, thereby extending the service life of the component.

[0112] In one embodiment, the locking assembly 101 further includes a position block 104;

[0113] The positioning block 104 is fixed to an end of the locking rod 101 away from the leak-proof ring 300 .

[0114] When operating the ball valve, the position block 104 serves as a visual or tactile reference point to help the operator understand the position and movement status of the locking rod and ensure the accuracy of the locking operation.

[0115] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the application of the position block on the locking rod significantly improves the operation accuracy and maintenance convenience, makes the operation interface more intuitive and easy to use, and enhances the safety of the equipment.

[0116] In one embodiment, the positioning block 104 and the pressure-bearing assembly 200 have the same shape, and the projections of their cross sections in the longitudinal direction of the locking rod 101 coincide with each other.

[0117] Since the position block 104 and the pressure assembly 200 are of the same shape and aligned, the alignment of the position block 104 and the pressure assembly 200 can be ensured by visual inspection, thereby judging the position of the locking rod 101 and the state of the pressure assembly 200 to ensure that they are in the correct operating position.

[0118] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the position block has the same shape as the pressure-bearing component and is aligned on the projection of the locking rod, ensuring that the entire component remains correctly aligned during operation, thereby improving the operating accuracy and efficiency of the device.

[0119] In one embodiment, a scale 101 c is provided on the locking rod 101 .

[0120] During the operation of the ball valve, using scale 101c as a reference, the staff can visually monitor and adjust the position of the locking rod to ensure that it reaches the required accuracy.

[0121] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the scale on the locking rod enables the operator to very accurately locate and adjust the position of the locking rod, thereby ensuring the sealing of the leak-proof ring 300 .

[0122] Figure 2is a schematic diagram according to an exemplary embodiment. Figures 1-2 As shown, the device includes the following use process:

[0123] Because the thread fit requirements are high and the ball valve has a long maintenance period, the thread is prone to rust, causing wire breakage, jamming, and biting. Therefore, the improvement part cancels the thread fit and does not use thread fit for locking. Instead, the pressure-bearing component 200 is used to limit the stop ring 300. One side of the pressure-bearing component 200 is wedge-shaped, and part of the surface of the ball valve end cover 500 is also wedge-shaped to form a match with the pressure-bearing component 200. When the position block 104 rotates a certain angle, the pressure-bearing component 200 will cooperate with the ball valve end cover 500 to clamp the stop ring 300. At this time, the force-bearing part is converted into the water inlet mechanism 600 and the ball valve end cover 500 for force, ensuring the principle that the locking component 100 is not subjected to much force during operation. Even if rust occurs, it will not affect the operation of the mechanism. Because it is a shaft, repeated operations will not have much impact. In addition, compared with the original shaft, the force-bearing area of ​​the pressure-bearing component 200 increases. The force point of the original device is the top end area of ​​the shaft, and now it is the entire surface area of ​​the pressure-bearing component 200, and the force on the stop ring 300 is more uniform.

[0124] Because the mechanical locking of the ball valve relies on the pressure-bearing component 200 to lock the leak-proof ring 300, the actuator part is not affected by the pressure, and all forces are borne by the pressure-bearing component 200. The pressure-bearing component 200 is made of metal, so it can only be deformed by extrusion, and the probability of extrusion damage is not high, so there is no problem with the force. The damage of the locking component 100 can only be the shaft damage, that is, the shaft rust damage, and when the shaft is rusted and damaged, the limit block does not rotate back to its original position, and it can still be locked, so the safety is guaranteed, and the shaft will be inspected regularly, and the probability of rust damage is low.

[0125] The locking rod 101 is connected to the pressure-bearing component 200 through the thread 101b at its end, and passes through the stop-leak ring exit cavity 301 until the stop-leak ring is inserted into the cavity 302. The non-circular design of the stop-leak ring insertion cavity ensures that the stop-leak ring 300 is correctly installed and adapted to the pressure-bearing component 200. Using the position block 104 as a reference, the position of the locking rod 101 is adjusted by observing the scale 101c on the locking rod 101, so that the pressure-bearing component 200 contacts the first pressure-bearing surface M-1 or the second pressure-bearing surface M-2 of the stop-leak ring 300, and the pressure is adjusted to achieve an ideal sealing effect. The position of the rotation angle of the pressure-bearing component 200 can be seen by using a wrench to rotate the position block 104, and the position can be read on site according to the surface scale 101c on the shaft.

[0126] Figure 5 is a schematic diagram of a ball valve locking device according to an exemplary embodiment. Figures 1 to 5 As shown, this includes the following processes:

[0127] The locking rod 101 passes through the ball valve end cover 500, extends to the stop ring exit cavity 301, and is fixed to the pressure-bearing component 200 through the connecting portion 101a and its thread 101b. The pressure-bearing component 200 can be adjusted along the L-shaped limit rod 103a in the sliding space 103b to adapt to the position of the stop ring 300; by adjusting the locking rod 101, the pressure-bearing component 200 is in contact with the first pressure-bearing surface M-1 or the second pressure-bearing surface M-2 in the stop ring exit cavity, and the pressure of the stop ring 300 is adjusted as needed. The serrated thread 102 interlocks with the serrated thread groove 201 on the pressure-bearing component to maintain the set position. The operator can accurately monitor and control the position of the locking rod through the scale 101c on the locking rod and the position block 104 to ensure accurate operation and make fine adjustments according to operational requirements.

[0128] The improved ball valve mechanical lock of the disclosed embodiment has good stability and can operate safely even if it is a little rusty compared to the original mechanism; the ball valve mechanical lock has certain force characteristics and can withstand high pressure after being locked, and can continue to maintain the locking function after being damaged; the ball valve mechanical lock is easy to maintain, involves fewer parts during replacement, and is easy to replace.

[0129] Example 3

[0130] The following are embodiments of the apparatus of the present disclosure, which can be used to execute embodiments of the method of the present disclosure.

[0131] Fig. 9 A ball valve is shown according to an exemplary embodiment. Fig. 9 As shown, the ball valve includes:

[0132] a ball valve housing 400; and,

[0133] The ball valve end cover 500 is connected to the ball valve housing 400 and forms a leak-proof ring exit cavity 301 with the ball valve housing 400 that can accommodate the leak-proof ring 300. The second pressure surface M-2 is located on the ball valve housing 400, and the first pressure surface M-1 is located on the ball valve end cover 500.

[0134] The ball valve housing 400 is the main body of the ball valve, accommodating and protecting the internal components of the ball valve, and forms a sealed cavity together with the ball valve end cover 500.

[0135] The ball valve housing 400 and the ball valve end cover 500 are assembled and installed to ensure that they are properly docked to form a accommodating space for the sealing ring structure, that is, the leak-proof ring exit cavity 301. Ensure that the leak-proof ring 300 is installed in this cavity, and the first pressure surface M-1 is located on the ball valve end cover 500, and the second pressure surface M-2 is located on the ball valve housing 400. By adjusting the components that interact with the leak-proof ring 300, the pressure between the first pressure surface M-1 and the second pressure surface M-2 is adjusted to ensure effective sealing.

[0136] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the configuration of the two pressure-bearing surfaces M-1 and M-2 constituting the leak-proof ring enhances the structural stability of the ball valve, so that the leak-proof ring can remain stable under different operating pressures. The combination of the ball valve shell and the end cover provides a suitable physical space and pressure environment for the leak-proof ring, ensuring strong sealing performance and preventing fluid leakage.

[0137] Example 4

[0138] The following are embodiments of the apparatus of the present disclosure, which can be used to execute embodiments of the method of the present disclosure.

[0139] Fig.10 A ball valve installation system is shown according to an exemplary embodiment. Fig.10 As shown, the ball valve installation system includes:

[0140] The water inlet mechanism 600 includes a joint 601 . The water inlet mechanism 600 is connected to the ball valve end cover 500 via the joint 601 . The locking rod 101 passes through the joint 601 .

[0141] The water inlet mechanism 600 introduces the fluid into the ball valve end cover 500 through the joint 601 to ensure that the fluid can smoothly enter the ball valve. The water inlet mechanism is a part of the ball valve system and is responsible for introducing the fluid into the ball valve.

[0142] As a key component for connecting the water inlet pipe and the end cover of the ball valve, the joint 601 must have good sealing and pressure resistance. The joint 601 is a key component in the water inlet mechanism 600, which is used to connect the water inlet pipe and the end cover of the ball valve. It plays the role of transmitting fluid and maintaining sealing.

[0143] The water inlet mechanism 600 is installed and fixed to the ball valve end cover 500 through the joint 601. The locking rod 101 is designed to pass through this joint, and the opening and closing state of the ball valve can be controlled by adjusting the locking rod 101. Since the locking rod passes through the joint 601, the staff can directly adjust the locking rod 101 through the joint to affect the water inlet amount and pressure.

[0144] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the design of the joint is not only used to fix the water inlet mechanism, but also provides a penetration point for the locking rod, thereby enhancing the overall structural stability and sealing of the ball valve system.

[0145] In one embodiment, a mounting chamber 601a is provided on a side of the joint 601 away from the leak-proof ring 300, and an elastic member 601b is provided in the mounting chamber 601a;

[0146] One end of the elastic member 601 b is connected to the locking rod 101 , and the other end is connected to the installation chamber 601 a , and can generate a force to move the locking rod 101 away from the leak-proof ring 300 .

[0147] When assembling the ball valve, the elastic member 601b is installed in the installation chamber 601a on the joint 601. One end of the elastic member is connected to the locking rod 101, and the other end is fixed to the inner wall of the installation chamber to ensure that it can stably apply force to the locking rod. During the operation of the ball valve, if the valve needs to be closed or adjusted to limit the water flow, the elastic member 601b helps push the locking rod 101 away from the leak-proof ring 300, and assists the operator to easily move the locking rod for adjustment.

[0148] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the elastic member can quickly push the locking rod back, thereby increasing the response speed of the ball valve, and the elastic member ensures that the locking rod can automatically return to its original position when not in use.

[0149] In one embodiment, a locking housing 601c is fixed in the installation chamber 601a;

[0150] A limiting ring 101d is provided on the locking rod 101, the locking rod 101 passes through the locking housing 601c and the limiting ring 101d is located inside the locking housing 601c;

[0151] One end of the elastic member 601b is connected to the limiting ring 101d, and the other end is connected to the inner end of the locking housing 601c.

[0152] During the installation of the ball valve, the locking rod 101 is arranged to pass through the locking housing 601c installed in the installation chamber 601a. ​​The stop ring 101d on the locking rod ensures that the locking rod remains in the correct position in the locking housing and does not move excessively or disengage. One end of the elastic member 601b is connected to the stop ring 101d, and the other end is fixed to the inner end of the locking housing. This configuration allows the elastic member to effectively control the movement of the locking rod and provide the necessary force to assist in the operation or automatically reset the locking rod.

[0153] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: through the interaction between the elastic member and the limit ring, the movement of the locking rod can be more accurately controlled, so that the opening and closing of the ball valve is more accurate, and the design of the elastic member can quickly push the locking rod back to its original position or a new adjustment position,

[0154] In one embodiment, the water inlet mechanism 600 further includes a water inlet pipe 602 , a joint 601 is fixed to the end of the water inlet pipe 602 , and the water inlet pipe 602 is connected to the ball valve end cover 500 via the joint 601 .

[0155] The water inlet pipe 602 is installed and fixed to the ball valve end cover 500 through the joint 601 at its end. This connection ensures that the joint between the water inlet pipe and the ball valve is well sealed to prevent leakage.

[0156] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the stable connection between the water inlet pipe and the end cover of the ball valve ensures the effective management of the water flow, and good fluid dynamic performance can be maintained whether in the open or closed state.

[0157] In one embodiment, the scale 101c is located outside of the mounting chamber 601a.

[0158] During the installation and setting process of the ball valve, the scale 101c of the locking rod 101 is clearly placed outside the installation chamber 601a. ​​Such an arrangement allows the operator to directly view the scale without opening or entering the more complex mechanical component area.

[0159] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: placing the scale on the outside enables the operator to accurately control the position of the locking rod when opening or closing the ball valve, thereby improving the convenience and efficiency of the operation.

[0160] Fig.11 is a schematic diagram according to an exemplary embodiment. Fig.11 As shown, the device includes the following use process:

[0161] Installation: First, connect the locking rod 101 of the main axis of the locking assembly 100 through the elastic member 601b and the locking shell 601c, match the pressure cover with the locking shell 601c, install the locking shell 601c and the water inlet mechanism 600 into the corresponding positions and seal them, install the matched device into the hole of the ball valve mechanical locking device of the water inlet mechanism 600, fix it with screws, connect the position block 104 with the locking rod 101 of the main axis of the locking assembly 100 through a key, and finally install the pressure-bearing assembly 200 after the ball valve end cover 500 is connected to the water inlet mechanism 600. At this point, the installation of the ball valve mechanical locking device is completed.

[0162] Disassembly: When the ball valve is disassembled and hoisted out, first put the ball valve mechanical lock into place, remove the pressure-bearing component 200, then take out the screws, withdraw the remaining ball valve mechanical locking mechanism through the top screw hole, remove the position block 104 after withdrawal, withdraw the pressure cover through the top screw hole, withdraw the main shaft locking rod 101 of the locking component 100, and remove the elastic part 601b. At this point, the disassembly of the ball valve mechanical locking device is completed.

[0163] The pressure-bearing component 200 locks the leak-proof ring 300, the main shaft locking rod 101 of the locking component 100 connects the pressure-bearing component 200, the elastic member 601b keeps the pressure-bearing component 200 in the return state, the seal seals the oil leaking from the oil inlet, the locking housing 601c limits the elastic member 601b, the gland limits the shaft and presses the elastic member 601b, the screws fix the gland and the elastic member 601b, and the position block 104 records and reads the position of the pressure-bearing component 200 by the main shaft locking rod 101 of the locking component 100. The damaged parts of the ball valve mechanical lock can be replaced with the corresponding parts, and other parts are not involved, realizing the concept of modularization.

[0164] Example 5

[0165] The following are embodiments of the apparatus of the present disclosure, which can be used to execute embodiments of the method of the present disclosure.

[0166] The ball valve locking method includes:

[0167] Pass the ball valve mechanism through the locking assembly and make its inner end contact the stop ring 300 in the stop ring exit cavity;

[0168] A pressure-bearing assembly 200 is provided at the inner end of the locking assembly, which can press the stop-leak ring 300 and can hold the stop-leak ring against the inner side wall of the exit cavity.

[0169] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: describing the core function of the ball valve locking device, namely ensuring the effective extrusion and positioning of the leak-proof ring 300 through the cooperation of the locking component and the pressure-bearing component, thereby ensuring the sealing and stability of the ball valve.

[0170] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0171] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A ball valve locking device, characterized in that: include, A locking assembly (100), one end of which passes through the ball valve end cover (500) and extends into a leak-proof ring exit cavity (301) for arranging a leak-proof ring (300); and, The pressure-bearing component (200) is located in the leak-proof ring exit cavity (301), and the locking component (100) passes through the pressure-bearing component (200) and is at least capable of moving relative to the locking component (100) toward the leak-proof ring (300).

2. The ball valve locking device according to claim 1, characterized in that: The locking assembly (100) comprises a locking rod (101), one end of the locking rod (101) is provided with a connecting portion (101a), the locking rod (101) passes through the pressure-bearing assembly (200) through the connecting portion (101a), and is at least capable of moving relative to the locking assembly (100) toward the leak-proof ring (300); The connecting portion (101a) is a thread (101b) provided at one end of the locking rod (101), and the locking rod (101) is connected to the pressure-bearing component (200) via the thread (101b); The locking assembly (100) further comprises a sawtooth thread (102) arranged around one end of the locking rod (101), and the pressure-bearing assembly (200) is provided with a sawtooth thread groove (201).

3. The ball valve locking device according to claim 2, characterized in that: The leak-proof ring exit cavity (301) has a first pressure-bearing surface (M-1) and a second pressure-bearing surface (M-2); When the pressure-bearing component (200) contacts the first pressure-bearing surface (M-1), the distance between the pressure-bearing component (200) and the leak-proof ring (300) is at a maximum value, and the leak-proof ring (300) can be pressed onto the second pressure-bearing surface (M-2) through the pressure-bearing component (200) or the locking component (100); The distance between the first pressure-bearing surface (M-1) and the second pressure-bearing surface (M-2) is D, the width of the pressure-bearing component (200) is d1, the width of the edge of the leak-proof ring (300) is d2; the length of the connecting portion (101a) is L; set up: L+d2>D-d1; D>d1+d2.

4. The ball valve locking device according to claim 3, characterized in that: The leak-proof ring withdrawal chamber (301) comprises a leak-proof ring insertion chamber (302) arranged on a side of the ball valve end cover (500) corresponding to the leak-proof ring (300), the cross section of the leak-proof ring insertion chamber (302) is arranged to be non-circular, and the leak-proof ring insertion chamber (302) is adapted to the pressure-bearing component (200); The first pressure-bearing surface (M-1) is a side surface of the leak-proof ring insertion cavity (302) away from the leak-proof ring (300); The locking assembly (100) comprises a locking rod (101), a check piece (103) is arranged on the locking rod (101), and the extension direction of the check piece (103) has at least a component toward the leak-proof ring (300); The check member (103) comprises two groups of L-shaped limit rods (103a) symmetrically arranged at both ends of the pressure-bearing component (200), and a sliding space (103b) is formed between the two groups of L-shaped limit rods (103a), and the width of the sliding space (103b) is greater than the width of the pressure-bearing component (200) and less than the length of the pressure-bearing component (200).

5. The ball valve locking device according to claim 4, characterized in that: The locking assembly (100) further comprises a position block (104); The position block (104) is fixed to an end of the locking rod (101) away from the leak-proof ring (300); The positioning block (104) and the pressure-bearing assembly (200) have the same shape, and the projections of their cross sections in the longitudinal direction of the locking rod (101) overlap; The locking rod (101) is provided with a scale (101c).

6. A ball valve, characterized in that: The ball valve locking device according to claim 5 further comprises: Ball valve housing (400); as well as, The ball valve end cover (500) is connected to the ball valve shell (400) and forms a leak-proof ring exit cavity (301) capable of accommodating the leak-proof ring (300) together with the ball valve shell (400); the second pressure-bearing surface (M-2) is located on the ball valve shell (400), and the first pressure-bearing surface (M-1) is located on the ball valve end cover (500).

7. A ball valve installation system, characterized in that: The ball valve according to claim 6 further comprising: A water inlet mechanism (600), the water inlet mechanism (600) comprising a joint (601), the water inlet mechanism (600) being connected to the ball valve end cover (500) via the joint (601); the locking rod (101) passing through the joint (601); A mounting chamber (601a) is provided on a side of the joint (601) away from the leak-proof ring (300), and an elastic member (601b) is provided in the mounting chamber (601a); One end of the elastic member (601b) is connected to the locking rod (101), and the other end is connected to the installation chamber (601a), and can generate a force to move the locking rod (101) away from the leak-proof ring (300); A locking housing (601c) is fixed in the installation chamber (601a); A limiting ring (101d) is provided on the locking rod (101), the locking rod (101) passes through the locking shell (601c), and the limiting ring (101d) is located inside the locking shell (601c); One end of the elastic member (601b) is connected to the limiting ring (101d), and the other end is connected to the inner end of the locking shell (601c).

8. The ball valve installation system according to claim 7, characterized in that: The water inlet mechanism (600) further comprises a water inlet pipe (602), the joint (601) is fixed to the end of the water inlet pipe (602), and the water inlet pipe (602) is connected to the ball valve end cover (500) via the joint (601).

9. The ball valve installation system according to claim 8, characterized in that: The scale (101c) is located outside the installation chamber (601a).

10. A ball valve locking method, characterized in that: The ball valve locking device comprises the ball valve locking device as claimed in any one of claims 1 to 5, further comprising: Pass the ball valve mechanism through the locking assembly and make its inner end contact the stop ring in the stop ring exit cavity; A pressure-bearing component (200) capable of pressing the leak-proof ring and resting the leak-proof ring on the inner side wall of the exit cavity is arranged at the inner end of the locking component.

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