A support and carrying device for power plant gate valve sealing test

Abstract

The present application relates to power plant gate valve sealing test equipment field, especially a kind of support handling device for power plant gate valve sealing test, it includes including support mechanism, it includes the first support seat being arranged in the lower part of valve body, and the guide rod being arranged in the upper portion of first support seat;First handling mechanism, it includes the support rod being arranged in the lower part of valve body and located in the upper portion of first support seat, and the second support seat being arranged in the both ends of support rod;Second handling mechanism, it includes the ring seat being arranged on the outer ring surface of valve seat and located below valve cover, the positioning seat being arranged on the side wall of ring seat, and the positioning clamping assembly being arranged between ring seat and positioning seat.Support mechanism, first handling mechanism and second handling mechanism cooperate with each other, not only can make gate valve sealing test process when hoisting gate valve to test table make valve seat and valve cover part towards upwards, but also can make valve seat and valve cover part towards upwards while ensuring the stability of gate valve during gate valve test.

Description

Technical Field

[0001] This invention relates to the field of power plant gate valve sealing test equipment, and in particular to a support and handling device for power plant gate valve sealing test. Background Technology

[0002] The power plant gate valve sealing test equipment is mainly used to test the sealing performance of gate valves to ensure their 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 test the sealing performance of the gate valve.

[0003] For smaller gate valves, testers can manually move them to the test bench. However, for larger gate valves, manual handling is not possible, and hoisting equipment is required. Since the valve seat and cover are far from the valve body's axis, placing the valve on the test bench with the cover vertically positioned presents a challenge. During hoisting, the valve seat and cover will be tilted towards the ground under gravity. After hoisting the valve to the test bench, testers must manually rotate the valve seat and cover upwards before securing the valve body. This adjustment process is time-consuming, labor-intensive, and poses safety hazards. Furthermore, with the valve seat and cover tilted upwards, the increased center of gravity reduces the valve's stability, making it prone to tipping over under external disturbances, thus affecting the sealing test. Summary of the Invention

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

[0005] Therefore, the purpose of this invention is to provide a support and handling device for the sealing test of gate valves in power plants, which can solve the problems of not being able to make the valve seat and valve cover face upwards when hoisting the gate valve to the test bench during the existing gate valve sealing test process, and the instability of the gate valve caused by the valve seat and valve cover facing upwards during the gate valve test process.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a support and transport device for sealing test of gate valve in power plant, comprising a support mechanism, which includes a first support seat disposed in the lower part of the valve body and a guide rod disposed on the upper part of the first support seat; a first transport mechanism, which includes a support rod disposed in the lower part of the valve body and located on the upper part of the first support seat, and a second support seat disposed at both ends of the support rod; and a second transport mechanism, which includes an annular seat disposed on the outer annular surface of the valve seat and located below the valve cover, a positioning seat disposed on the side wall of the annular seat, and a positioning and locking assembly disposed between the annular seat and the positioning seat.

[0007] As a preferred embodiment of the support and handling device for the sealing test of the power plant gate valve described in this invention, the first support seat contacts the first support ring in the lower part of the valve body, and the first support ring has a placement groove in the middle; the guide rods are symmetrically arranged at both ends of the first support ring.

[0008] As a preferred embodiment of the support and handling device for the sealing test of the power plant gate valve described in this invention, the support rod is disposed in the placement groove; the second support base includes a second support ring fixed at both ends of the support rod, a reinforcing column fixed at both ends to the side wall of the second support ring and the side wall of the support rod respectively, and a lifting point rotatably disposed at the end of the second support ring.

[0009] As a preferred embodiment of the support and transport device for the sealing test of the power plant gate valve described in this invention, the ring seat includes an annular portion that fits against the outer annular surface of the valve seat, and a first connecting plate and a second connecting plate that are respectively fixed to the side walls at both ends of the annular portion; the first connecting plate is provided with a first sliding groove and a slot communicating with the side wall of the first sliding groove; the ring seat includes a guide rail fixed to the top of the first sliding groove.

[0010] As a preferred embodiment of the support and transport device for the sealing test of the power plant gate valve described in this invention, the second connecting plate is provided with a second slide groove that communicates with the first slide groove; the ring seat includes a slider that is slidably disposed in the second slide groove, and a first spring that contacts the slider and the second slide groove at both ends respectively.

[0011] As a preferred embodiment of the support and transport device for the sealing test of the power plant gate valve described in this invention, the slide block has a third slide groove on its side wall, and the opening direction of the third slide groove is parallel to the slot; the ring seat also includes a locking block slidably disposed in the third slide groove, and a second spring with its two ends respectively contacting the locking block and the third slide groove, and the edge of the locking block facing the opening of the third slide groove and away from the opening of the second slide groove is rounded.

[0012] As a preferred embodiment of the support and handling device for the sealing test of the power plant gate valve described in this invention, the positioning seat is fixed on the outer wall of the ring, and a 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 communicating with the side wall of the guide rod hole, and a sliding rod hole communicating with the clamping rod cavity and the outside of the positioning seat, and the guide rod is slidably disposed in the guide rod hole.

[0013] As a preferred embodiment of the support and transport device for the sealing test of the power plant gate valve described in this invention, the positioning and locking assembly includes a friction ring slidably disposed in the locking rod cavity, a slide rod fixed on the outer wall of the friction ring and slidably disposed in the slide rod hole, a first rotating rod hinged to the end of the slide rod, and a threaded rod fixed to the end of the first rotating rod; the positioning and locking assembly also includes a second rotating rod slidably disposed outside the first rotating rod, a rotating ball fixed to the end of the rotating rod, and a ball seat that is ball-connected to the outside of the rotating ball and slidably disposed in the first sliding groove.

[0014] As a preferred embodiment of the support and transport device for the sealing test of the power plant gate valve described in this invention, the ball seat is provided with a ball cavity, a rotating groove communicating with the ball cavity, and a guide groove located on the upper part of the ball seat; the rotating ball is rotatably disposed in the ball cavity, the second rotating rod is rotatably disposed in the rotating groove, and the guide rail is slidably disposed in the guide groove.

[0015] As a preferred embodiment of the support and handling device for the sealing test of the power plant gate valve described in this invention, the second rotating rod is provided with a threaded groove, and the threaded rod is threadedly connected to the threaded groove.

[0016] The beneficial effects of this invention are as follows: The support and handling device for the sealing test of a power plant gate valve described in this invention, through the cooperation of the support mechanism, the first handling mechanism and the second handling mechanism, not only ensures that the valve seat and valve cover face upwards when the gate valve is hoisted to the test bench during the sealing test, but also ensures the stability of the gate valve while the valve seat and valve cover face upwards during the test. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 A schematic diagram of the overall structure of the support and handling device and the gate valve used for sealing tests of power plant gate valves;

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

[0020] Figure 3 A schematic diagram of the support and handling device used for sealing tests of gate valves in power plants;

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

[0022] Figure 5 This is a schematic diagram of the first handling mechanism;

[0023] Figure 6 This is a schematic diagram of the second handling mechanism;

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

[0025] Figure 8 A sectional view of the ring seat and the locating seat;

[0026] Figure 9 This is a cross-sectional view of the second conveying mechanism;

[0027] Figure 10 This is a partial enlarged sectional view of the second transport mechanism;

[0028] Figure 11 An exploded view of the positioning card connector assembly;

[0029] Figure 12 This is a schematic diagram of the ball seat structure. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the 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 phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figures 1-11This is the first embodiment of the present invention. This embodiment provides a support and transport device for sealing tests of gate valves in power plants. Specifically, it includes a support mechanism 100, which includes a first support seat 101 disposed in the lower part of the valve body P-1, and a guide rod 102 disposed in the upper part of the first support seat 101; a first transport mechanism 200, which includes a support rod 201 disposed in the lower part of the valve body P-1 and located in the upper part of the first support seat 101, and a second support seat 202 disposed at both ends of the support rod 201; and a second transport mechanism 300, which includes an annular seat 301 disposed on the outer annular surface of the valve seat P-2 and located below the valve cover P-3, a positioning seat 302 disposed on the side wall of the annular seat 301, and a positioning and locking assembly 303 disposed between the annular seat 301 and the positioning seat 302.

[0035] Furthermore, the first support base 101 is set on the test bench of the gate valve sealing test equipment; the first support base 101 includes a first support ring 101a that contacts the lower 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 rods 102 are symmetrically arranged at both ends of the first support ring 101a.

[0036] It should be noted that the first support ring 101a is a semi-circular ring, and the end planes of the first support ring 101a are parallel to each other, which allows the guide rods 102 fixed to the end of the first support ring 101a to be parallel to each other.

[0037] Preferably, the support rod 201 is disposed in the placement groove K-1; the second support base 202 includes a second support ring 202a fixed at both ends of the support rod 201, a reinforcing column 202b fixed at both ends to the end side wall of the second support ring 202a and the side wall of the support rod 201 respectively, and a lifting point 202c rotatably disposed 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 the length of the first support ring 101a. This arrangement makes the support rod 201 more stable in supporting the valve body P-1. 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 hoist the gate valve, the valve body P-1 part of the gate valve must first be placed on the second support seat 202, and then connected to the lifting point 202c through the steel cable. The second support seat 202 is then lifted through the four lifting points 202c, thereby moving the gate valve. When the gate valve needs to be inspected, the operator needs to hoist the second support seat 202 into the embedded placement groove K-1 for positioning.

[0040] Example 2

[0041] Reference Figures 1-12 This is the second embodiment of the present invention, which 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 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 slot K-3 that communicates with the side wall of the first sliding groove K-2; the ring seat 301 includes a guide rail 301d fixed to the top of the first sliding groove K-2.

[0043] It should be noted that the two ring seats 301 can fit together; the ring part 301a is a semi-circular ring, which can fit and adapt to the outer ring surface of the valve seat P-2.

[0044] Furthermore, the second connecting plate 301c is provided with a second slide groove K-4 that communicates with the first slide groove K-2; the ring seat 301 includes a slider 301e that is slidably disposed in the second slide groove K-4, and a first spring 301f that contacts the slider 301e and the second slide groove K-4 at both ends 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 groove K-4 under the elastic force of the first spring 301f. At this time, the groove opening of the third groove K-5 will no longer be in contact with the side wall of the second groove K-4.

[0046] Furthermore, a third groove K-5 is provided on the side wall of the slider 301e, and the opening direction of the third groove K-5 is parallel to the slot K-3; the ring seat 301 also includes a locking block 301g slidably disposed in the third groove K-5, and a second spring 301h with its two ends respectively contacting the locking block 301g and the third groove K-5, and the edge of the locking block 301g facing the opening of the third groove K-5 and away from the opening of the second groove K-4 is rounded.

[0047] It should be noted that when the locking block 301g is not subjected to external pressure, the locking block 301g will partially slide out of the third slide 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 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 locking 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 locking rod cavity K-7 and the outside of the positioning seat 302, and the guide rod 102 is slidably disposed in the guide rod hole K-6.

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

[0050] It should be noted that when the first rotating rod 303c is retracted into the second rotating rod 303e to its 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 pushing force to the sliding rod 303b.

[0051] Preferably, the ball seat 303g has a ball cavity K-9, a rotating groove K-10 communicating with 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; the second rotating rod 303e has 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 thread groove K-12, which will cause the first rotating rod 303c to retract into or extend out of 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 portion of the gate valve must first be placed on the second support 202. Then, the ring portions 301a of the two second transport mechanisms 300 are attached to the outer ring surface of the valve seat P-2 and spliced ​​together. During the splicing of the two second transport mechanisms 300, the operator needs to attach 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. This will cause the first rotating rod 303c to retract into the second rotating rod 303e. e. When the friction ring 303a abuts against the connection between the locking rod cavity K-7 and the sliding rod hole K-8, the first rotating rod 303c retracts into the second rotating rod 303e, causing the second rotating rod 303e to pull the ball seat 303g through the rotating ball 303f. This causes the ball seat 303g to slide out of the first sliding groove K-2 along the guide rail 301d. After the ball seat 303g is no longer blocked, the slider 301e will slide out of the second sliding groove K-4 under the elastic force of the first spring 301f, and the locking block 301g will partially slide out of the third sliding groove K-5 under the elastic force of the second spring 301h and lock into the locking groove K-3, thus fixing the two second conveying mechanisms 300 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 clamp the steel cable into the hook 302a to concentrate it, and then lift the second support 202 through the steel cable, thereby moving the gate valve; under the limit of the steel cable to the hook 302a, the second transport mechanism 300 can restrain the valve seat P-2 and the valve cover P-3, so that the excessive center of gravity of the gate valve is limited below the second transport mechanism 300, thereby enabling the gate valve to be lifted stably.

[0055] It should be noted that when the gate valve needs to be tested, the operator needs to hoist the second support 202 into 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. The second rotating rod 303e will push the sliding rod 303b, causing the friction ring 303a to press against the side wall of the guide rod 102, thereby completely fixing the position between the guide rod 102 and the second transport mechanism 300. After that, the operator can release the steel cable, and the center of gravity of the gate valve is limited to below the second transport mechanism 300, so that the testing 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. The first rotating rod 303c retracts into the second rotating rod 303e, so that the friction ring 303a no longer presses against 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. This will cause the ball seat 303g to slide out of the first slide groove K-2 along the guide rail 301d. After the ball seat 303g is no longer blocked, the slider 301e will slide out of the second slide groove K-4 under the elastic force of the first spring 301f. The locking block 301g will partially slide out of the third slide groove K-5 under the elastic force of the second spring 301h and lock into the locking groove K-3, so that the two second transport mechanisms 300 are fixed together. Then the gate valve can be lifted off the test bench through the above lifting steps.

[0057] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A support and transport device for sealing tests of gate valves in power plants, characterized in that: include, The support mechanism (100) includes a first support seat (101) disposed in the lower part of the valve body (P-1) and a guide rod (102) disposed in the upper part of the first support seat (101). The first conveying mechanism (200) includes 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 a second support seat (202) disposed at both ends of the support rod (201). The second conveying mechanism (300) includes a ring seat (301) disposed on the outer ring surface of the valve seat (P-2) and located below the valve cover (P-3), a positioning seat (302) disposed on the side wall of the ring seat (301), and a positioning snap-fit ​​assembly (303) disposed between the ring seat (301) and the positioning seat (302). There are two ring seats (301), and the two ring seats (301) can fit together and adapt to the outer ring surface of the valve seat (P-2); The first support base (101) includes a first support ring (101a) in the lower part of the contact 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 both ends of the first support ring (101a); The support rod (201) is disposed in the placement slot (K-1); A 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); The guide rod (102) is slidably disposed in the guide rod hole (K-6).

2. The support and handling device for sealing test of power plant gate valve according to claim 1, characterized in that: The second support base (202) includes a second support ring (202a) fixed at both ends of the support rod (201), a reinforcing column (202b) fixed at both ends on the side wall of the second support ring (202a) and the side wall of the support rod (201) respectively, and a lifting point (202c) rotatably disposed at the end of the second support ring (202a).

3. The support and handling device for sealing test of power plant gate valve according to claim 2, characterized in that: 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) that are respectively fixed on 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 slot (K-3) connected to the side wall of the first sliding groove (K-2); The ring seat (301) includes a guide rail (301d) fixed to the top of the first slide (K-2).

4. The support and handling device for sealing test of power plant gate valve according to claim 3, characterized in that: The second connecting plate (301c) is provided with a second slide groove (K-4) that communicates with the first slide groove (K-2); The ring seat (301) includes a slider (301e) slidably disposed in the second slide groove (K-4), and a first spring (301f) whose two ends respectively contact the slider (301e) and the second slide groove (K-4).

5. The support and handling device for sealing test of power plant gate valve according to claim 4, characterized in that: The slider (301e) has a third groove (K-5) on its side wall, and the opening direction of the third groove (K-5) is parallel to the slot (K-3); The ring seat (301) also includes a locking block (301g) slidably disposed in the third slide groove (K-5), and a second spring (301h) with its two ends respectively contacting the locking block (301g) and the third slide groove (K-5). The edge of the locking 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.

6. The support and handling device for sealing test of power plant gate valve according to claim 5, characterized in that: The positioning seat (302) is fixed on the outer wall of the ring (301a); The positioning seat (302) is also provided with a locking 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 locking rod cavity (K-7) and the outside of the positioning seat (302).

7. The support and handling device for sealing test of power plant gate valve according to claim 6, characterized in that: The positioning and snapping assembly (303) includes a friction ring (303a) slidably disposed in the snap rod cavity (K-7), a slide rod (303b) fixed on the outer wall of the friction ring (303a) and slidably disposed in the slide rod hole (K-8), a first rotating rod (303c) hinged to the end of the slide rod (303b), and a threaded rod (303d) fixed to the end of the first rotating rod (303c). The positioning and snapping assembly (303) further includes a second rotating rod (303e) slidably disposed outside the first rotating rod (303c), a rotating ball (303f) fixed to the end of the rotating rod (303e), and a ball seat (303g) that is attached to the outside of the rotating ball (303f) and slidably disposed in the first slide groove (K-2).

8. The support and handling device for sealing test of power plant gate valve according to claim 7, characterized in that: The ball seat (303g) is provided with a ball cavity (K-9), a rotating groove (K-10) communicating with 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).

9. The support and handling device for sealing test of power plant gate valve according to claim 8, characterized in that: The second rotating rod (303e) has a threaded groove (K-12), and the threaded rod (303d) is threadedly connected to the threaded groove (K-12).

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