Supporting and carrying device for power plant gate valve sealing test

Abstract

The invention relates to the field of power plant gate valve sealing test equipment, in particular to a supporting and carrying device for a power plant gate valve sealing test, and the device comprises a supporting mechanism which comprises a first supporting seat disposed at the middle lower part of a valve body, and a guide rod disposed at the upper part of the first supporting seat; the first carrying mechanism comprises a supporting rod arranged on the lower portion of the valve body and located on the upper portion of the first supporting base, and second supporting bases arranged at the two ends of the supporting rod. The second carrying mechanism comprises a ring seat arranged on the outer ring face of the valve seat and located below the valve deck, a positioning seat arranged on the side wall of the ring seat and a positioning clamping assembly arranged between the ring seat and the positioning seat. Through mutual cooperation of the supporting mechanism, the first carrying mechanism and the second carrying mechanism, a valve seat and a valve cover part face upwards when a gate valve is hoisted to a test table in the gate valve sealing test process, and stability of the gate valve is guaranteed while the valve seat and the valve cover part face upwards in the gate valve test process.

Description

Technical Field

[0001] The invention relates to the field of power plant gate valve sealing test equipment, in particular to a supporting and transporting device for power plant gate valve sealing test. Background Art

[0002] The power plant gate valve sealing test equipment is mainly used to test the sealing performance of the gate valve to ensure its reliability and safety under working conditions. During the test, the test equipment needs to be connected to both ends of the gate valve body, filled with water and pressurized to a specific working pressure to detect the sealing performance of the gate valve.

[0003] For gate valves with smaller mass, testers can manually move the gate valve to the test bench, but for gate valves with larger mass, testers cannot move it manually and must use lifting equipment to move it. However, since the gate valve seat and valve cover are far away from the axis of the valve body, there is a problem in how to place the gate valve on the test bench with the valve cover in a vertical state. During the lifting process, the valve seat and valve cover of the gate valve will face the ground under gravity. After lifting the gate valve to the test bench, testers need to manually rotate the valve seat and valve cover to face upward before fixing the two ends of the valve body. The above adjustment process is time-consuming and labor-intensive, and there are safety hazards. When the valve seat and valve cover of the gate valve face upward, due to the increase in the center of mass of the valve seat and valve cover, the stability of the gate valve itself decreases, and it is easy to topple under external disturbances, affecting the sealing test process. Summary of the invention

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a supporting and transporting device for a power plant gate valve sealing test, which can solve the problem that the valve seat and the valve cover cannot be oriented upward when the gate valve is hoisted to the test bench during the existing gate valve sealing test, and the problem of gate valve instability caused by the valve seat and the valve cover oriented upward during the gate valve test.

[0006] In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a supporting and transporting device for a sealing test of a power plant gate valve, comprising a supporting mechanism, which comprises a first supporting seat arranged at the lower middle part of a valve body, and a guide rod arranged at the upper part of the first supporting seat; a first transporting mechanism, which comprises a supporting rod arranged at the lower part of the valve body and located at the upper part of the first supporting seat, and a second supporting seat arranged at both ends of the support rod; a second transporting mechanism, which comprises a ring seat arranged on the outer ring surface of the valve seat and located below the valve cover, a positioning seat arranged on the side wall of the ring seat, and a positioning clamping assembly arranged between the ring seat and the positioning seat.

[0007] As a preferred solution of the supporting and transporting device for sealing test of power plant gate valves described in the present invention, the first supporting seat contacts the first supporting ring in the lower middle part of the valve body, and a placement groove is opened in the middle of the first supporting ring; the guiding rod is symmetrically arranged at both ends of the first supporting ring.

[0008] As a preferred solution of the support and transportation device for the sealing test of the power plant gate valve described in the present invention, wherein: the support rod is arranged in the placement groove; the second support seat includes a second support ring fixed at both ends of the support rod, a reinforcing column whose two ends are respectively fixed on the side wall of the end of the second support ring and the side wall of the support rod, and a hanging point rotatably arranged at the end of the second support ring.

[0009] As a preferred solution of the supporting and transporting device for sealing test of power plant gate valves described in the present invention, the ring seat includes a ring portion that fits the outer ring surface of the valve seat, and a first connecting plate and a second connecting plate respectively fixed on the side walls at both ends of the ring portion; the first connecting plate is provided with a first slide groove, and a clamping groove connected to the side wall of the first slide groove; the ring seat includes a guide rail fixed on the top of the first slide groove.

[0010] As a preferred solution of the supporting and transporting device for sealing test of power plant gate valves described in the present invention, the second connecting plate is provided with a second slide groove connected to the first slide groove; the ring seat includes a slider slidably arranged in the second slide groove, and a first spring whose two ends respectively contact the slider and the second slide groove.

[0011] As a preferred solution of the supporting and carrying device for sealing test of power plant gate valves described in the present invention, wherein: a third slide groove is opened on the side wall of the slider, and the opening direction of the third slide groove is parallel to the clamping groove; the ring seat also includes a clamping block slidably arranged in the third slide groove, and a second spring with two ends respectively contacting the clamping block and the third slide groove, and the edges of the clamping block facing the opening of the third slide groove and away from the opening of the second slide groove are chamfered.

[0012] As a preferred solution of the supporting and carrying device for sealing test of power plant gate valves described in the present invention, wherein: the positioning seat is fixed on the outer wall of the ring portion, and a wire hook is fixed on the outer wall of the positioning seat; the positioning seat is provided with a guide rod hole, a clamping rod cavity connected to the side wall of the guide rod hole, and a sliding rod hole connecting the clamping rod cavity and the outside of the positioning seat, and the guide rod is slidably arranged in the guide rod hole.

[0013] As a preferred solution of the supporting and carrying device for sealing test of power plant gate valves described in the present invention, the positioning clamping assembly includes a friction ring slidably arranged in the clamping rod cavity, a sliding rod fixed on the outer wall of the friction ring and slidably arranged in the sliding rod hole, a first rotating rod hinged at the end of the sliding rod, and a threaded rod fixed at the end of the first rotating rod; the positioning clamping assembly also includes a second rotating rod slidably arranged outside the first rotating rod, a rotating ball fixed at the end of the rotating rod, and a ball seat connected to the outside of the rotating ball and slidably arranged in the first sliding groove.

[0014] As a preferred solution of the supporting and transporting device for sealing test of power plant gate valves described in the present invention, the ball seat is provided with a ball cavity, a rotating groove connected to the ball cavity, and a guide groove located on the upper part of the ball seat; the rotating ball is rotatably arranged in the ball cavity, the second rotating rod is rotatably arranged in the rotating groove, and the guide rail is slidably arranged in the guide groove.

[0015] As a preferred solution of the supporting and transporting device for sealing test of power plant gate valves described in the present invention, a thread groove is provided in the second rotating rod, and the threaded rod is threadedly connected in the thread groove.

[0016] The beneficial effects of the present invention are as follows: the supporting and transporting device for a power plant gate valve sealing test described in the present invention, through the cooperation of the supporting mechanism, the first transporting mechanism and the second transporting mechanism, can not only make the valve seat and the valve cover part face upward when the gate valve is hoisted to the test bench during the gate valve sealing test, but also can make the valve seat and the valve cover part face upward during the gate valve test while ensuring the stability of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the overall structure of the support and handling device and gate valve used for the power plant gate valve sealing test;

[0019] Figure 2 It is a schematic diagram of the structure of the gate valve;

[0020] Figure 3 This is a schematic diagram of the structure of the support and handling device for the power plant gate valve sealing test;

[0021] Figure 4 It is a structural diagram of the supporting mechanism;

[0022] Figure 5 is a structural schematic diagram of a first transport mechanism;

[0023] Figure 6 is a structural schematic diagram of a second transport mechanism;

[0024] Figure 7 It is a schematic diagram of the parts structure of the ring seat and the positioning seat;

[0025] Figure 8 It is a cross-sectional view of the parts of the ring seat and the positioning seat;

[0026] Fig. 9 is a cross-sectional view of the second transport mechanism;

[0027] Fig.10 is a partial cross-sectional enlarged view of the second transport mechanism;

[0028] Fig.11 An exploded view of the positioning clamp assembly;

[0029] Fig.12 It is a schematic diagram of the structure of the ball seat. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] Example 1

[0034] Reference Figures 1 to 11, is the first embodiment of the present invention, which provides a support and handling device for a sealing test of a power plant gate valve, specifically comprising: a support mechanism 100, which includes a first support seat 101 arranged at the middle and lower part of a valve body P-1, and a guide rod 102 arranged at the upper part of the first support seat 101; a first handling mechanism 200, which includes a support rod 201 arranged at the lower part of the valve body P-1 and located at the upper part of the first support seat 101, and a second support seat 202 arranged at both ends of the support rod 201; a second handling mechanism 300, which includes a ring seat 301 arranged on the outer ring surface of the valve seat P-2 and located below the valve cover P-3, a positioning seat 302 arranged on the side wall of the ring seat 301, and a positioning clamping assembly 303 arranged between the ring seat 301 and the positioning seat 302.

[0035] Furthermore, the first support seat 101 is arranged on the test bench of the gate valve sealing test equipment; the first support seat 101 includes a first support ring 101a contacting the lower middle part of the valve body P-1, and a placement groove K-1 is opened in the middle of the first support ring 101a; the guide rod 102 is symmetrically arranged at both ends of the first support ring 101a.

[0036] It should be noted that the first support ring 101a is a semicircular ring, and the planes of the ends of the first support ring 101a are parallel to each other, which enables the guide rods 102 fixed to the ends of the first support ring 101a to be parallel to each other.

[0037] Preferably, the support rod 201 is arranged in the placement groove K-1; the second support seat 202 includes a second support ring 202a fixed at both ends of the support rod 201, a reinforcing column 202b whose two ends are respectively fixed on the end side wall of the second support ring 202a and the side wall of the support rod 201, and a hanging point 202c rotatably arranged at the end of the second support ring 202a.

[0038] It should be noted that the length of the support rod 201 is much longer than that of the first support ring 101a. This arrangement enables the support rod 201 to support the valve body P-1 more stably; the lifting point 202c is used to connect the steel cable for lifting the gate valve.

[0039] In this embodiment, when the operator needs to lift the gate valve, he needs to first place the valve body P-1 part of the gate valve on the second support seat 202, and then connect it to the lifting point 202c through a steel cable, and lift the second support seat 202 through the four lifting points 202c to move the gate valve; when the gate valve needs to be inspected, the operator needs to lift the second support seat 202 into the embedded placement groove K-1 for positioning.

[0040] Example 2

[0041] Reference Figures 1 to 12 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0042] Specifically, the ring seat 301 includes a ring portion 301a that fits the outer ring surface of the valve seat P-2, and a first connecting plate 301b and a second connecting plate 301c respectively fixed on the side walls at both ends of the ring portion 301a; the first connecting plate 301b is provided with a first slide groove K-2, and a slot K-3 connected to the side wall of the first slide groove K-2; the ring seat 301 includes a guide rail 301d fixed on the top of the first slide groove K-2.

[0043] It should be noted that the two ring seats 301 can fit each other; the ring portion 301a is in a semicircular shape and can fit the outer ring surface of the valve seat P-2.

[0044] Furthermore, a second slide groove K-4 connected to the first slide groove K-2 is opened on the second connecting plate 301c; the ring seat 301 includes a slider 301e slidably set in the second slide groove K-4, and a first spring 301f whose two ends contact the slider 301e and the second slide groove K-4 respectively.

[0045] It should be noted that when the slider 301e is not subjected to external pressure, the slider 301e will partially slide out of the second slide groove K-4 under the elastic force of the first spring 301f, and the notch of the third slide groove K-5 will no longer contact the side wall of the second slide groove K-4.

[0046] Furthermore, a third slide groove K-5 is opened on the side wall of the slider 301e, and the opening direction of the third slide groove K-5 is parallel to the card slot K-3; the ring seat 301 also includes a card block 301g slidably set in the third slide groove K-5, and a second spring 301h whose two ends contact the card block 301g and the third slide groove K-5 respectively, and the edge of the card block 301g facing the opening of the third slide groove K-5 and away from the opening of the second slide groove K-4 is chamfered.

[0047] It should be noted that, when the block 301g is not subjected to external pressure, the block 301g will partially slide out of the third sliding groove K-5 under the elastic force of the second spring 301h.

[0048] Furthermore, the positioning seat 302 is fixed on the outer wall of the ring portion 301a, and a wire hook 302a is fixed on the outer wall of the positioning seat 302; the positioning seat 302 is provided with a guide rod hole K-6, a clamping rod cavity K-7 connected to the side wall of the guide rod hole K-6, and a sliding rod hole K-8 connecting the clamping rod cavity K-7 and the outside of the positioning seat 302, and the guide rod 102 is slidably set in the guide rod hole K-6.

[0049] Furthermore, the positioning card assembly 303 includes a friction ring 303a slidably set in the card rod cavity K-7, a sliding rod 303b fixed on the outer wall of the friction ring 303a and slidably set in the sliding rod hole K-8, a first rotating rod 303c hinged at the end of the sliding rod 303b, and a threaded rod 303d fixed at the end of the first rotating rod 303c; the positioning card assembly 303 also includes a second rotating rod 303e slidably set outside the first rotating rod 303c, a rotating ball 303f fixed at the end of the rotating rod 303e, and a ball seat 303g connected to the outside of the rotating ball 303f and slidably set in the first sliding groove K-2.

[0050] It should be noted that when the first rotating rod 303c is retracted into the second rotating rod 303e to the maximum range, the angle between the first rotating rod 303c and the sliding rod 303b is greater than 100 degrees; when the first rotating rod 303c is retracted into the second rotating rod 303e, the first rotating rod 303c can provide a pulling force to the sliding rod 303b; when the first rotating rod 303c is extended out of the second rotating rod 303e, the first rotating rod 303c can provide a thrust to the sliding rod 303b.

[0051] Preferably, the ball seat 303g is provided with a ball cavity K-9, a rotating groove K-10 connected to the ball cavity K-9, and a guide groove K-11 located on the upper part of the ball seat 303g; the rotating ball 303f is rotatably set in the ball cavity K-9, the second rotating rod 303e is rotatably set in the rotating groove K-10, and the guide rail 301d is slidably set in the guide groove K-11; the second rotating rod 303e is provided with a threaded groove K-12, and the threaded rod 303d is threadedly connected to the threaded groove K-12.

[0052] It should be noted that the rotating ball 303f can rotate relative to the ball seat 303g. When the operator rotates the rotating rod 303e, the threaded rod 303d will rotate relative to the threaded groove K-12, which will cause the first rotating rod 303c to retract or extend into the second rotating rod 303e.

[0053] In this embodiment, when the operator needs to hoist the gate valve onto the test bench of the gate valve sealing test equipment for a sealing test, the valve body P-1 of the gate valve needs to be placed on the second support seat 202 first, and then the ring portions 301a of the two second transport mechanisms 300 are fitted to the outer annular surface of the valve seat P-2 and spliced ​​to each other; in the process of splicing the two second transport mechanisms 300, the operator needs to fit the first connecting plate 301b of one second transport mechanism 300 to the second connecting plate 301c of the other second transport mechanism 300, and rotate the second rotating rod 303e counterclockwise, which will cause the first rotating rod 303c to retract into the second rotating rod 303 e. When the friction ring 303a is against the connection between the clamping rod cavity K-7 and the slide rod hole K-8, the first rotating rod 303c is retracted into the second rotating rod 303e, which will cause the second rotating rod 303e to pull the ball seat 303g through the rotating ball 303f, which will cause the ball seat 303g to slide out of the first slide groove K-2 along the guide rail 301d; after losing the obstruction of the ball seat 303g, the slider 301e will slide out of the second slide groove K-4 under the elastic force of the first spring 301f, and the clamping block 301g will partially slide out of the third slide groove K-5 under the elastic force of the second spring 301h, and be clamped in the clamping groove K-3, so that the two second transport mechanisms 300 are fixed together.

[0054] It should be noted that after the two second transport mechanisms 300 are fixed together, the operator can connect the steel cable to the lifting point 202c, and insert the steel cable into the wire hook 302a to concentrate it, and lift the second support seat 202 by the steel cable, thereby moving the gate valve; under the limitation of the steel cable to the wire hook 302a, the second transport mechanism 300 can restrain the valve seat P-2 and the valve cover P-3, so that the excessively high center of gravity of the gate valve is limited below the second transport mechanism 300, thereby enabling the gate valve to be stably lifted.

[0055] It should be noted that when the gate valve needs to be inspected, the operator needs to lift the second support seat 202 to the embedded placement groove K-1, and at the same time align the guide rod hole K-6 with the guide rod 102, and insert the guide rod 102 into the guide rod hole K-6 for positioning; after being positioned, the operator needs to rotate the second rotating rod 303e clockwise, which will cause the first rotating rod 303c to extend out of the second rotating rod 303e, and the second rotating rod 303e will push the sliding rod 303b, so that the friction ring 303a squeezes the side wall of the guide rod 102, thereby completely fixing the position between the guide rod 102 and the second conveying mechanism 300, after which the operator can loosen the steel cable, and the center of gravity of the gate valve is limited to below the second conveying mechanism 300, and the inspection process can be carried out safely.

[0056] It should also be noted that after the operator has inspected the gate valve, the operator can rotate the second rotating rod 303e counterclockwise, and the first rotating rod 303c will retract into the second rotating rod 303e, so that the friction ring 303a no longer squeezes the guide rod 102. At the same time, the retraction of the first rotating rod 303c into the second rotating rod 303e will cause the second rotating rod 303e to pull the ball seat 303g through the rotating ball 303f, which will cause the ball seat 303g to slide out of the first slide groove K-2 along the guide rail 301d; after losing the obstruction of the ball seat 303g, the slider 301e will slide out of the second slide groove K-4 under the elastic force of the first spring 301f, and the block 301g will partially slide out of the third slide groove K-5 under the elastic force of the second spring 301h, and be stuck in the card groove K-3, so that the two second transport mechanisms 300 are fixed together, and then the gate valve can be lifted off the test bench through the above-mentioned lifting steps.

[0057] 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.

[0058] 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 supporting and transporting device for a power plant gate valve sealing test, characterized in that: include, A support mechanism (100) comprising a first support seat (101) arranged at the lower part of the valve body (P-1), and a guide rod (102) arranged at the upper part of the first support seat (101); A first transport mechanism (200) comprising a support rod (201) disposed at the lower part of the valve body (P-1) and located at the upper part of the first support seat (101), and second support seats (202) disposed at both ends of the support rod (201); The second conveying mechanism (300) includes a ring seat (301) arranged on the outer ring surface of the valve seat (P-2) and located below the valve cover (P-3), a positioning seat (302) arranged on the side wall of the ring seat (301), and a positioning clamping assembly (303) arranged between the ring seat (301) and the positioning seat (302).

2. The supporting and transporting device for power plant gate valve sealing test according to claim 1 is characterized in that: The first support seat (101) comprises a first support ring (101a) contacting the lower middle portion of the valve body (P-1), and a placement groove (K-1) is provided in the middle of the first support ring (101a); The guide rods (102) are symmetrically arranged at two ends of the first supporting ring (101a).

3. The supporting and transporting device for power plant gate valve sealing test according to claim 2 is characterized in that: The support rod (201) is arranged in the placement groove (K-1); The second support seat (202) comprises a second support ring (202a) fixed at both ends of the support rod (201), a reinforcing column (202b) whose two ends are respectively fixed to the end side wall of the second support ring (202a) and the side wall of the support rod (201), and a hanging point (202c) rotatably arranged at the end of the second support ring (202a).

4. The supporting and transporting device for power plant gate valve sealing test according to claim 3 is characterized in that: The ring seat (301) comprises a ring portion (301a) that fits the outer ring surface of the valve seat (P-2), and a first connecting plate (301b) and a second connecting plate (301c) that are respectively fixed to the side walls at both ends of the ring portion (301a); The first connecting plate (301b) is provided with a first sliding groove (K-2) and a clamping groove (K-3) connected to the side wall of the first sliding groove (K-2); The ring seat (301) comprises a guide rail (301d) fixed on the top of the first slide groove (K-2).

5. The supporting and transporting device for power plant gate valve sealing test according to claim 4 is characterized in that: The second connecting plate (301c) is provided with a second sliding groove (K-4) connected to the first sliding groove (K-2); The ring seat (301) comprises a slider (301e) slidably arranged in the second slide groove (K-4), and a first spring (301f) with two ends contacting the slider (301e) and the second slide groove (K-4) respectively.

6. The supporting and transporting device for power plant gate valve sealing test according to claim 5 is characterized in that: A third sliding groove (K-5) is provided on the side wall of the sliding block (301e), and the opening direction of the third sliding groove (K-5) is parallel to the clamping groove (K-3); The ring seat (301) further comprises a block (301g) slidably arranged in the third slide groove (K-5), and a second spring (301h) having two ends respectively contacting the block (301g) and the third slide groove (K-5); the edge of the block (301g) facing the opening of the third slide groove (K-5) and away from the opening of the second slide groove (K-4) is rounded.

7. The supporting and transporting device for power plant gate valve sealing test according to claim 6 is characterized in that: The positioning seat (302) is fixed on the outer wall of the ring portion (301a), and a wire hook (302a) is fixed on the outer wall of the positioning seat (302); The positioning seat (302) is provided with a guide rod hole (K-6), a clamping rod cavity (K-7) connected to the side wall of the guide rod hole (K-6), and a sliding rod hole (K-8) connected to the clamping rod cavity (K-7) and the outside of the positioning seat (302); the guide rod (102) is slidably arranged in the guide rod hole (K-6).

8. The supporting and transporting device for power plant gate valve sealing test according to claim 7 is characterized in that: The positioning clamping assembly (303) comprises a friction ring (303a) slidably disposed in the clamping rod cavity (K-7), a sliding rod (303b) fixed on the outer wall of the friction ring (303a) and slidably disposed in the sliding rod hole (K-8), a first rotating rod (303c) hinged at the end of the sliding rod (303b), and a threaded rod (303d) fixed at the end of the first rotating rod (303c); The positioning clamping assembly (303) further comprises a second rotating rod (303e) slidably arranged outside the first rotating rod (303c), a rotating ball (303f) fixed to the end of the rotating rod (303e), and a ball seat (303g) connected to the outside of the rotating ball (303f) and slidably arranged in the first sliding groove (K-2).

9. The supporting and transporting device for power plant gate valve sealing test according to claim 8, characterized in that: The ball seat (303g) is provided with a ball cavity (K-9), a rotation groove (K-10) connected to the ball cavity (K-9), and a guide groove (K-11) located on the upper part of the ball seat (303g); The rotating ball (303f) is rotatably disposed in the ball cavity (K-9), the second rotating rod (303e) is rotatably disposed in the rotating groove (K-10), and the guide rail (301d) is slidably disposed in the guide groove (K-11).

10. The supporting and transporting device for power plant gate valve sealing test according to claim 9, characterized in that: The second rotating rod (303e) is provided with a thread groove (K-12), and the threaded rod (303d) is threadedly connected to the thread groove (K-12).

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