CN220134878U - Mounting mechanism and electric ball valve sealing device for hydropower engineering - Google Patents

Abstract

The utility model relates to the technical field of electric ball valves, in particular to an installation mechanism and an electric ball valve sealing device for hydroelectric engineering, which comprise an execution assembly, a sealing assembly and a sealing assembly, wherein the execution assembly comprises a cylinder body, an installation part arranged at the top of the cylinder body and cylinder covers arranged at two sides of the cylinder body; the mounting assembly is arranged at the top of the mounting component and comprises a protection box arranged at the top of the mounting component; the valve body assembly is arranged at the bottom of the cylinder body and comprises a connecting block connected with the cylinder body, a valve body fixedly connected at the bottom of the connecting block and a connecting pipe arranged on the side face of the valve body. According to the utility model, the mounting blocks, the mounting grooves and the limiting pieces are matched with each other, and the mounting sleeve at the bottom of the protection box is in butt joint with and fixed with the control box mounting column, so that the problem of inconvenient mounting and dismounting of the accessory protection box of the electric ball valve is solved, the protection box is fixedly connected to the mounting part, and the mounting is convenient.

Description

Mounting mechanism and electric ball valve sealing device for hydropower engineering

Technical Field

The utility model relates to the technical field of hydroelectric engineering, in particular to a mounting mechanism and an electric ball valve sealing device for hydroelectric engineering.

Background

The electric ball valve is an important actuating mechanism in an industrial automatic control system, the electric ball valve is a valve which rotates around the axis of a valve rod according to the moving mode of a valve clack, the change of a valve seat opening is in proportional relation with the stroke of the valve clack, and the electric ball valve is mainly used for cutting off or connecting a medium in a pipeline, can also be used for regulating and controlling fluid, is a pipeline pressing element for industrial automatic process control, and is widely applied to the field of water and electricity engineering.

The electric ball valve is arranged on different hydropower engineering equipment and can control and regulate fluid in pipelines of the hydropower engineering equipment. The existing electric ball valve is generally provided with various detachable and replaceable remote electronic control accessories and accessory protection boxes, and the protection boxes are generally fixed by bolts and are relatively troublesome to detach and replace; the electric ball valve is further divided into a two-way electric ball valve, a three-way electric ball valve and the like, and is used for connecting different pipelines, the existing electric ball valve is generally fixed by bolts when being connected with the pipelines, and the sealing means are complex, the structure is complex, and quick and effective sealing means are lacked.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the problem that the attachment of the electric ball valve is inconvenient to mount and dismount, as described or in the prior art.

It is therefore an object of the present utility model to provide a mounting mechanism.

In order to solve the technical problems, the utility model provides the following technical scheme: the mounting mechanism comprises an execution assembly, a control assembly and a control assembly, wherein the execution assembly comprises a cylinder body, a mounting part arranged at the top of the cylinder body and cylinder covers arranged at two sides of the cylinder body; the mounting assembly is arranged at the top of the mounting component and comprises a protection box arranged at the top of the mounting component; the valve body assembly is arranged at the bottom of the cylinder body and comprises a connecting block connected with the cylinder body, a valve body fixedly connected at the bottom of the connecting block and a connecting pipe arranged on the side face of the valve body.

As a preferred embodiment of the mounting mechanism of the present utility model, wherein: the mounting component comprises a fixed plate arranged at the top of the cylinder body, a control box mounting column arranged at the top of the fixed plate, a mounting part arranged at one side of the top of the fixed plate, which is close to the control box mounting column, and a limiting part arranged at the top of the mounting part.

As a preferred embodiment of the mounting mechanism of the present utility model, wherein: the installation department is including seting up at the mounting groove at fixed plate top, gomphosis rubber pad in the mounting groove, protruding the dog of connecting at the mounting groove top surface and run through and seting up the first square groove at rubber pad surface.

As a preferred embodiment of the mounting mechanism of the present utility model, wherein: the installation component still includes the installation piece of connecting in protection box bottom and installation department matching, connects the installation cover in protection box bottom and control box erection column matching.

As a preferred embodiment of the mounting mechanism of the present utility model, wherein: the installation block is matched with the installation groove and the rubber pad, and a second square groove matched with the first square groove is formed in a penetrating mode on one side, close to the rubber pad, of the installation block.

As a preferred embodiment of the mounting mechanism of the present utility model, wherein: the limiting piece comprises a rotary rod rotationally connected in the mounting groove, a limiting block connected to one end of the rotary rod, which is close to the inside of the fixed plate, a square block fixedly connected to the other end of the rotary rod and matched with the first square groove, a rotary block fixedly connected to the top of the square block, and a limiting groove formed in one side of the rotary rod and matched with the blocking block.

As a preferred embodiment of the mounting mechanism of the present utility model, wherein: the blocking block is in a column shape with a quarter-circle cross section, the limiting groove is in a column shape with a semicircle cross section, and the quarter-column blocking block is coaxial with the semi-column limiting groove.

The mounting mechanism has the beneficial effects that: according to the utility model, the mounting blocks, the mounting grooves and the limiting pieces are matched with each other, and the mounting sleeve at the bottom of the protection box is in butt joint with and fixed with the control box mounting column, so that the problem of inconvenience in mounting and dismounting accessories of the electric ball valve is solved, and the protection box is fixedly connected to the mounting part, thereby being convenient to mount.

In view of the fact that in the practical use process, the problem that the sealing means are complicated and the electric ball valve cannot be sealed rapidly and effectively during pipeline connection exists.

In order to solve the technical problems, the utility model also provides the following technical scheme: the electric ball valve sealing device for the hydropower engineering comprises a mounting mechanism, a annunciator mounted at the top of a protection box and a connecting component, wherein the connecting component is arranged on one side of a connecting pipe and comprises a threaded pipe fixedly connected to the outer surface of one side of the connecting pipe and provided with threads and a threaded ring in threaded connection with the threaded pipe; the sealing assembly is arranged on one side of the threaded pipe and comprises a butt joint pipe, a sealing sleeve and a protruding block, wherein the butt joint pipe is in sliding connection with the inside of the threaded pipe, the sealing sleeve is nested at the end part of the butt joint pipe, and the protruding block is fixedly connected on one side of the butt joint pipe.

As a preferable scheme of the electric ball valve sealing device for the hydropower engineering, the utility model comprises the following steps: the first notch matched with the lug is formed in one side of the threaded pipe, and the second notch matched with the lug is formed in one side of the threaded ring.

As a preferable scheme of the electric ball valve sealing device for the hydropower engineering, the utility model comprises the following steps: and the inner side of the connecting pipe is provided with a sealing groove matched with the sealing sleeve, and both the sealing sleeve and the sealing groove are of conical structures.

The electric ball valve sealing device for the hydropower engineering has the beneficial effects that: according to the utility model, the threaded pipe with the first notch and the threaded ring with the second notch are matched with the butt joint pipe with the convex block, so that the sealing sleeve at the end part of the butt joint pipe is tightly attached to the sealing groove, the problem that the sealing means is complex and the electric ball valve cannot be quickly and effectively sealed when the electric ball valve is connected with a pipeline is solved, and the limiting extrusion is generated through dislocation of the second notch of the threaded ring and the convex block, so that the electric ball valve is convenient to seal and fix.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is a schematic perspective view of the mounting mechanism of the present utility model after mounting.

Fig. 2 is a schematic perspective view of the mounting mechanism of the present utility model before installation.

Fig. 3 is a schematic view of a partial explosion of a three-dimensional structure when the installation mechanism of the utility model is installed.

Fig. 4 is a schematic partial structure of a limiting member and a blocking piece of the mounting mechanism of the present utility model.

Fig. 5 is a schematic perspective view of the sealing device of the electric ball valve for the hydroelectric engineering.

Fig. 6 is a schematic view of a three-dimensional structure of a sealing device of an electric ball valve for hydroelectric engineering.

Detailed Description

In order that the described objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 and 2, a first embodiment of the present utility model provides a mounting mechanism for enabling attachment of an accessory to an electrically operated ball valve, comprising: the execution assembly 100, the installation assembly 200 and the valve body assembly 300 provide control power for the electric ball valve by arranging the execution assembly 100, can be installed and control and protect the electric ball valve by arranging the installation assembly 200 as an accessory and a protection box of the electric ball valve, and are convenient to be connected with a pipeline for use by arranging the valve body assembly 300.

Specifically, the execution assembly 100 includes a cylinder 101, a mounting member 102 disposed on the top of the cylinder 101, and cylinder heads 103 disposed on both sides of the cylinder 101; the mounting assembly 200, the mounting assembly 200 being disposed on top of the mounting member 102, includes a protective case 201 disposed on top of the mounting member 102. The mounting assembly 200 is mounted and dismounted by the top mounting member 102.

Further, the valve body assembly 300 is disposed at the bottom of the cylinder 101, and includes a connection block 301 connected with the cylinder 101, a valve body 302 fixedly connected to the bottom of the connection block 301, and a connection pipe 303 disposed at a side of the valve body 302. The connection pipe 303 may be generally provided in plurality to communicate with a plurality of pipes.

The mounting member 102 includes a fixing plate 102a provided on the top of the cylinder 101, a control box mounting post 102b provided on the top of the fixing plate 102a, a mounting portion 102c provided on the top of the fixing plate 102a on a side close to the control box mounting post 102b, and a stopper 102d provided on the top of the mounting portion 102 c. The control box mounting column 102b is arranged to be in butt joint with the protection box 201, and the mounting part 102c and the limiting piece 102d are arranged to play a role in mounting and fixing the protection box 201.

Preferably, the mounting portion 102c includes a mounting groove 102c-1 formed at the top of the fixing plate 102a, a rubber pad 102c-2 fitted in the mounting groove 102c-1, a blocking block 102c-3 protruding from the top surface of the mounting groove 102c-1, and a first square groove 102c-4 formed through the surface of the rubber pad 102 c-2. The protective box 201 is installed in a limiting mode through the arrangement of the installation groove 102c-1, the buffer effect is achieved through the arrangement of the rubber pad 102c-2, and the rubber pad 102c-2 is matched with the blocking block 102c-3 and the limiting piece 102d to fix and compress the protective box 201.

Preferably, the mounting assembly 200 further includes a mounting block 203 coupled to the bottom of the shield cartridge 201 that mates with the mounting portion 102c and a mounting sleeve 204 coupled to the bottom of the shield cartridge 201 that mates with the control cartridge mounting post 102 b. The mounting block 203 is fixed to the mounting portion 102c by providing the mounting sleeve 204 for positioning in a butt joint with the control box mounting column 102b and by providing the mounting block 203 for cooperation with the mounting groove 102c-1 and the stopper 102d.

When in use, the mounting sleeve 204 at the bottom of the protection box 201 is in butt joint and positioning with the control box mounting column 102b, so that the mounting block 203 is connected with the mounting groove 102c-1 for limiting, and then the protection box 201 is fixed on the mounting part 102c through the blocking block 102c-3, the limiting piece 102d and the rubber pad 102c-2, so that the mounting is completed.

In sum, through setting up execution subassembly 100, installation component 200 and valve body subassembly 300 and mounting groove 102c-1 cooperation use, can be with the annex protection box 201 and the installation component 102 of electric ball valve, stop piece 102c-3 and locating part 102d cooperation rubber pad 102c-2, solved the inconvenient problem of accessory protection box 201 installation of electric ball valve, convenient fixed.

Example 2

Referring to fig. 1 to 4, in a second embodiment of the present utility model, unlike the previous embodiment, the present embodiment provides a first square groove 102c-4, a second square groove 203a and a rotating lever 102d-1, solving the problems of mounting and dismounting the accessory protection case 201 of the electric ball valve.

Specifically, the mounting block 203 is matched with the mounting groove 102c-1 and the rubber pad 102c-2, and a second square groove 203a matched with the first square groove 102c-4 is formed in a penetrating manner on one side, close to the rubber pad 102c-2, of the mounting block 203. By providing the mounting block 203 matching the mounting groove 102c-1 and the rubber pad 102c-2, the mounting block 203 can be laterally limited by the mounting groove 102c-1, thereby laterally fixing the protective case 201.

Further, the limiting member 102d includes a rotating rod 102d-1 rotatably coupled to the inside of the mounting groove 102c-1, a limiting block 102d-4 coupled to one end of the rotating rod 102d-1 adjacent to the inside of the fixed plate 102a, a square block 102d-2 fixedly coupled to the other end of the rotating rod 102d-1 and coupled to the first square groove 102c-4, a rotating block 102d-3 fixedly coupled to the top of the square block 102d-2, and a limiting groove 102d-5 provided at one side of the rotating rod 102d-1 and coupled to the blocking block 102 c-3. By providing the rotating lever 102d-1, the square block 102d-2 and the second square groove 203a to cooperate, the square block 102d-2 and the second square groove 203a are dislocated by rotating the rotating lever 102d-1, thereby restraining the mounting block 203 in the mounting groove 102c-1, and thus longitudinally fixing the shield case 201.

The blocking block 102c-3 is in a column shape with a quarter-circle cross section, the limit groove 102d-5 is in a column shape with a semicircle cross section, and the quarter-column blocking block 102c-3 is coaxial with the half-column limit groove 102d-5. When the rotating rod 102d-1 is rotated, the blocking piece 102c-3 can only partially rotate relative to the limit groove 102d-5 of the rotating rod 102 d-1. At the initial position, one vertical surface of the quarter cylindrical blocking block 102c-3 is attached to the surface of the limiting groove 102d-5 in parallel, and at this time, the square block 102d-2 is aligned with the second square groove 203 a; after the rotating rod 102d-1 rotates 90 degrees, the other vertical surface of the blocking block 102c-3 is attached to the surface of the limiting groove 102d-5 in parallel, the rotation is blocked and stopped, and at this time, the square block 102d-2 is dislocated from the second square groove 203a, so that the position of the square block 102d-2 can be conveniently determined to be aligned or dislocated relative to the second square groove 203a.

In use, rotating the rotating rod 102d-1 aligns the square block 102d-2 with the first square groove 102c-4 and the second square groove 203a, firstly placing the rubber pad 102c-2 into the mounting groove 102c-1, then placing the mounting block 203 into the mounting groove 102c-1, transversely fixing the protective box 201, then pressing the mounting block 203 to deform the rubber pad 102c-2 until the bottom surface of the square block 102d-2 is higher than the mounting block 203, then rotating the rotating rod 102d-1 to cause the square block 102d-2 to be dislocated with the second square groove 203a, and longitudinally fixing the protective box 201. When disassembly is needed, the square block 102d-2 is reversely rotated by 90 degrees, so that the square block 102d-2 is aligned with the second square groove 203a, and then the mounting block 203 is taken out of the mounting groove 102c-1, so that replacement is facilitated.

In summary, through setting up first square groove 102c-4, second square groove 203a and rotary rod 102d-1 cooperation use, through rotating rotary rod 102d-1 and making square piece 102d-2 and first square groove 102c-4, second square groove 203a align or misplace, the installation of having solved the accessory protection box 201 of electric ball valve is fixed and is dismantled.

Example 3

Referring to fig. 5 and 6, in a third embodiment of the present utility model, unlike the previous embodiment, the present embodiment provides an electric ball valve sealing device for hydro-power engineering, which solves the problem that the sealing means is complicated and the sealing cannot be performed quickly and effectively when the electric ball valve is connected to the pipeline, and includes a mounting mechanism, a annunciator 202 mounted on the top of a protective case 201, a connection assembly 400, and a sealing assembly 500. The valve body 302 is connected with other pipelines by arranging the connecting assembly 400, and the valve body 302 is quickly sealed when being connected with the pipelines by arranging the sealing assembly 500.

Specifically, the connection assembly 400 is disposed on one side of the connection pipe 303, and includes a threaded pipe 401 fixedly connected to an outer surface of one side of the connection pipe 303 and provided with threads, and a threaded ring 402 screwed with the threaded pipe 401. The pipe is conveniently in butt joint through the fixed connection between the threaded pipe 401 and the connecting pipe 303, and then the pipe is adjusted through the rotary connection between the threaded ring 402 and the threaded pipe 401.

Specifically, the seal assembly 500 is disposed on one side of the threaded tube 401, and the seal assembly 500 includes a butt joint tube 501 slidably connected to the inside of the threaded tube 401, a sealing sleeve 502 nested at an end of the butt joint tube 501, and a bump 503 fixedly connected to one side of the butt joint tube 501. By arranging the butt joint between the butt joint pipe 501 and the threaded pipe 401 and arranging the sealing sleeve 502 to seal the butt joint pipe 501 and the threaded pipe 401, the sealing sleeve 502 is preferably made of rubber, and the gap between the butt joint pipe 501 and the threaded pipe 401 is filled and blocked by extrusion deformation of the sealing sleeve 502.

Further, a first notch 401a matching with the bump 503 is formed on one side of the threaded tube 401, and a second notch 402a matching with the bump 503 is formed on one side of the threaded ring 402. By screwing the threaded ring 402, the second notch 402a on the threaded ring 402 side is aligned with or offset from the first notch 401a, and the adapter 501 is fixed to prevent falling off.

Wherein, seal groove 303a matched with seal sleeve 502 is arranged on the inner side of connecting pipe 303, seal sleeve 502 and seal groove 303a are both in conical structures. By arranging the sealing sleeve 502 with a conical structure to be matched with the sealing groove 303a, after the butt joint pipe 501 is inserted into the threaded pipe 401, the conical end part of the butt joint pipe 501 enters the sealing groove 303a in the connecting pipe 303, and after extrusion, a gap between the butt joint pipe 501 and the connecting pipe 303 can be filled and blocked, so that the sealing is facilitated.

In use, the second notch 402a on one side of the threaded ring 402 is aligned with the first notch 401a by rotating the threaded ring 402 in a threaded manner, then the bump 503 on one side of the butt joint pipe 501 is aligned with the first notch 401a, then the butt joint pipe 501 is inserted into the threaded pipe 401, the tapered end of the butt joint pipe 501 enters the sealing groove 303a in the connecting pipe 303, after the bump 503 passes through the second notch 402a, the threaded ring 402 is rotated again to enable the second notch 402a to be misplaced with the bump 503, meanwhile, the threaded ring 402 is close to the bump 503 until the bump 503 is extruded, the tapered sealing sleeve 502 on the end of the butt joint pipe 501 is driven to extrude the sealing groove 303a by extrusion of the bump 503, and a gap between the butt joint pipe 501 and the connecting pipe 303 is automatically filled and plugged.

In sum, through setting up the cooperation and using between coupling assembling 400, seal assembly 500 and the seal cover 502, only need rotate screwed ring 402, will be connected fixedly between connecting pipe 501 and the connecting pipe 303 to will be to the clearance packing shutoff between connecting pipe 501 and the connecting pipe 303 through seal cover 502, simple structure, conveniently seal fast, the sealed means is loaded down with trivial details when having solved electric ball valve pipe connection, can not effectively seal fast problem.

It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. A mounting mechanism, characterized in that: comprising the steps of (a) a step of,

the execution assembly (100) comprises a cylinder body (101), a mounting component (102) arranged at the top of the cylinder body (101) and cylinder covers (103) arranged at two sides of the cylinder body (101);

a mounting assembly (200), the mounting assembly (200) being disposed atop the mounting member (102) and comprising a protective case (201) disposed atop the mounting member (102);

the valve body assembly (300), valve body assembly (300) sets up in cylinder body (101) bottom, including connecting block (301) that are connected with cylinder body (101), fixed connection at valve body (302) and connecting pipe (303) of setting in valve body (302) side bottom connecting block (301).

2. The mounting mechanism as set forth in claim 1, wherein: the mounting component (102) comprises a fixed plate (102 a) arranged at the top of the cylinder body (101), a control box mounting column (102 b) arranged at the top of the fixed plate (102 a), a mounting part (102 c) arranged at one side, close to the control box mounting column (102 b), of the top of the fixed plate (102 a) and a limiting piece (102 d) arranged at the top of the mounting part (102 c).

3. The mounting mechanism as set forth in claim 2, wherein: the mounting part (102 c) comprises a mounting groove (102 c-1) formed in the top of the fixing plate (102 a), a rubber pad (102 c-2) embedded in the mounting groove (102 c-1), a blocking block (102 c-3) connected to the top surface of the mounting groove (102 c-1) in a protruding mode, and a first square groove (102 c-4) formed in the surface of the rubber pad (102 c-2) in a penetrating mode.

4. A mounting mechanism as claimed in claim 2 or claim 3, wherein: the mounting assembly (200) further comprises a mounting block (203) connected to the bottom of the protection box (201) and matched with the mounting part (102 c), and a mounting sleeve (204) connected to the bottom of the protection box (201) and matched with the control box mounting column (102 b).

5. The mounting mechanism as set forth in claim 4, wherein: the installation block (203) is matched with the installation groove (102 c-1) and the rubber pad (102 c-2), and a second square groove (203 a) matched with the first square groove (102 c-4) is formed in the installation block (203) in a penetrating mode on one side, close to the rubber pad (102 c-2).

6. The mounting mechanism as set forth in claim 5, wherein: the limiting piece (102 d) comprises a rotating rod (102 d-1) rotatably connected in the mounting groove (102 c-1), a limiting block (102 d-4) connected to one end of the rotating rod (102 d-1) close to the inside of the fixed plate (102 a), a square block (102 d-2) fixedly connected to the other end of the rotating rod (102 d-1) and matched with the first square groove (102 c-4), a rotating block (102 d-3) fixedly connected to the top of the square block (102 d-2), and a limiting groove (102 d-5) formed in one side of the rotating rod (102 d-1) and matched with the blocking block (102 c-3).

7. The mounting mechanism as set forth in claim 6, wherein: the blocking block (102 c-3) is in a column shape with a cross section of a quarter circle, the limiting groove (102 d-5) is in a column shape with a cross section of a semicircle, and the quarter-column blocking block (102 c-3) is coaxial with the semi-column limiting groove (102 d-5).

8. An electric ball valve sealing device for hydroelectric engineering, which is characterized in that: comprising a mounting mechanism as claimed in any one of claims 1 to 7, an annunciator (202) mounted on top of a protective case (201), and

the connecting assembly (400) is arranged on one side of the connecting pipe (303) and comprises a threaded pipe (401) fixedly connected to the outer surface of one side of the connecting pipe (303) and provided with threads and a threaded ring (402) in threaded connection with the threaded pipe (401);

the sealing assembly (500) is arranged on one side of the threaded pipe (401) and comprises a butt joint pipe (501) which is in sliding connection with the inside of the threaded pipe (401), a sealing sleeve (502) which is embedded at the end part of the butt joint pipe (501) and a protruding block (503) which is fixedly connected on one side of the butt joint pipe (501).

9. The electric ball valve sealing device for hydroelectric engineering according to claim 8, wherein: a first notch (401 a) matched with the protruding block (503) is formed in one side of the threaded pipe (401), and a second notch (402 a) matched with the protruding block (503) is formed in one side of the threaded ring (402).

10. The electric ball valve sealing device for hydroelectric engineering according to claim 8 or 9, wherein: and a sealing groove (303 a) matched with the sealing sleeve (502) is formed in the inner side of the connecting pipe (303), and both the sealing sleeve (502) and the sealing groove (303 a) are of conical structures.