CN219364547U - Dry dock water filling device - Google Patents

Abstract

The utility model relates to a dry dock water filling device, belongs to the field of dock operation, and aims to adjust water filling speed to a certain extent. The water conveying gallery comprises a water conveying channel connected to the bottom of the shaft; a valve mechanism for adjusting the opening of the vertical shaft and the water filling channel of the water conveying channel is arranged in the vertical shaft. The size of the irrigation channel is regulated through the valve mechanism, the irrigation speed can be regulated to a certain extent through a mode of regulating the size of the irrigation channel under the condition that the water head difference in an external water area and a dock is certain, and the irrigation efficiency and the stability of irrigation are effectively considered through the regulation of the irrigation speed.

Description

Dry dock water filling device

Technical Field

The utility model belongs to the field of dock operation, and particularly relates to a dry dock water filling device.

Background

With the development of global economic trade, the continuous progress of shipbuilding technology and the appearance of transportation trunks and hub ports around the world, the progress of the large-scale development of ships is gradually accelerated in recent years, the dominant ships are continuously upgraded, and the proportion of the large-scale ships occupying the fleet is continuously increased. The enlargement of ships also puts new demands on the enlargement of dock. The extra-large dock generally has the characteristics of large tide level amplitude, large irrigation square quantity, high irrigation intensity, urgent water flow speed, large dock chamber water surface fluctuation, strong impact force and the like, and the improper design of a dock irrigation system can not only influence the operation efficiency, but also influence the safety of dock engineering.

Currently, dock irrigation modes generally include dock gate irrigation, siphon irrigation and corridor irrigation. The characteristics of various irrigation modes are as follows:

irrigation of a dock gate: the structure is simpler, and the irrigation valve is directly arranged in the dock gate, so that the influence on the hydraulic structure is reduced, and the mutual restriction and interference during the dock civil engineering are avoided. The manufacturing cost is lower, and the installation, the maintenance and the replacement of parts are convenient. But is only applicable to buoyancy caisson gates.

Siphon irrigation: the device is simple, the construction is convenient, the maintenance operation is easy, and compared with the dock gate water filling, the phenomena of cavitation, vibration, corrosion and the like caused by adopting the valve are effectively avoided. Compared with gallery irrigation, the method has the contradiction between irrigation flow and negative pressure, is complex in design and construction process, and is relatively high in later maintenance cost.

Gallery irrigation: the principle is simple, the technology is mature, the operation is reliable, and the construction is convenient compared with siphon irrigation.

In a comprehensive view, the gallery irrigation mode can be suitable for the requirements of large-scale and extra-large dock irrigation amount, high irrigation efficiency requirement, simple structure, convenient maintenance and the like.

The gallery irrigation generally includes a shaft, a water inlet passage communicating the open sea with the shaft, and an irrigation gallery for introducing water from the shaft out of the dock for irrigation.

And the traditional gallery is filled with water, and gate valves are arranged on the water filling gallery. In order to fully utilize the head difference of the internal water body and the external water body, the irrigation efficiency is improved, and the water flow speed is often improved. However, from the safety aspect, the smaller the filling time is, the larger the flow speed is, and the high-speed water flow can generate certain scouring on the wall surface of the gallery and can generate impact on the valve, so that potential safety hazards are caused. On the other hand, too high flow velocity at the outlet of the gallery can cause too severe fluctuation of the water surface in the dock room to influence the berthing stability of the ship. The gate valve arranged on the irrigation gallery cannot be adjusted and throttled, can be only used for full opening and full closing, cannot actively adjust the irrigation speed, and is unfavorable for guaranteeing the stability of irrigation.

Disclosure of Invention

The utility model aims to provide a dry dock irrigation device, which adjusts irrigation speed to a certain extent and balances irrigation efficiency and irrigation stability.

The technical scheme adopted by the utility model is as follows: the dry dock water filling device comprises a vertical shaft communicated with an external water area through a water inlet channel and a water conveying gallery communicated with the vertical shaft and the dry dock, wherein the water conveying gallery comprises a water conveying channel connected to the bottom of the vertical shaft; a valve mechanism for adjusting the opening of the vertical shaft and the water filling channel of the water conveying channel is arranged in the vertical shaft.

Further, the valve mechanism includes a valve plug, a valve seat, a valve stem, and a poppet mechanism; the valve plug is of a hollow cylinder structure with at least the bottom end communicated, is movably arranged in the vertical shaft along the vertical direction, and a gap is arranged between the outer wall of the valve plug and the wall of the vertical shaft; the bottom end of the valve rod is connected with the valve plug, the top end of the valve rod is vertically upwards connected with the lifting mechanism, and the valve rod is driven to move up and down by the lifting mechanism; the valve seat is fixedly connected to the bottom of the vertical shaft, and the valve plug is buckled on the valve seat and is vertically and movably connected with the valve seat; the interval between the valve seat and the bottom end of the valve plug forms a water filling channel for communicating the vertical shaft with the water delivery channel; when closed, the bottom end of the valve plug is buckled on the valve seat to close the irrigation channel.

Further, the valve plug is a hollow cylinder structure with two through ends, and when the valve plug is closed, the bottom end of the valve plug is in sealing fit with the valve seat.

Further, the valve seat comprises a bottom ring and a valve core; the bottom of the valve core is fixed with the bottom ring into a whole; the bottom end of the valve plug is in sealing fit with the bottom ring.

Further, the bottom of the valve core is fixed on the inner side of the bottom ring, and a ring of sealing ring is arranged at the position corresponding to the lower edge opening of the valve plug on the top surface of the bottom ring.

Further, the valve core comprises a rib frame, and the rib frame is of a hollowed-out frame structure; the bottom of the rib frame and the bottom ring are fixed into a whole.

Further, the rib frame comprises a top frame at the top end, a bottom frame at the bottom end and a connecting rod in the middle; the top frame and the bottom frame are formed by uniformly distributing a plurality of cross bars around the axial direction of the rib frame; the connecting rod top is connected in the roof-rack center, and the bottom is connected in the chassis center.

Further, a plurality of first limit guide rails are distributed at the bottom of the valve plug along the circumferential direction of the valve plug, and the first limit guide rails are fixed on the inner wall of the valve plug and extend along the axial direction of the valve plug;

a first limiting guide groove matched with the first limiting guide rail is arranged at the corresponding position of the outer edge of the rib frame and the first limiting guide rail; the first limiting guide rail is inserted into the first limiting guide groove and is vertically and movably matched with the first limiting guide groove.

Further, a plurality of rib plates are arranged between the top frame and the bottom frame; along the radial direction of the rib frame, the inner side of the rib plate is fixed on the connecting rod, and the outer side edge extends outwards; along the rib frame axial direction, the rib top extends to the roof rack, and the bottom extends to the chassis, divides into a plurality of mutually independent watering spaces with the space between roof rack and the chassis through the rib.

Further, a grid cover plate is arranged at the wellhead of the vertical shaft, and a hole for allowing the valve plug to move up and down is reserved in the middle of the grid cover plate; a plurality of limiting guide grooves II are uniformly distributed on the inner edge of the hole;

a plurality of limiting guide rails II are distributed at the top of the valve plug along the circumferential direction of the valve plug, and the limiting guide rails II are fixed on the outer wall of the valve plug and extend along the axial direction of the valve plug;

the second limiting guide rail is inserted into the second limiting guide groove and is vertically and movably matched with the second limiting guide groove.

The beneficial effects of the utility model are as follows: according to the utility model, the valve mechanism for adjusting the opening of the water pouring channel between the vertical shaft and the water conveying channel is arranged in the vertical shaft, the size of the water pouring channel is adjusted through the valve mechanism, the water pouring speed can be adjusted to a certain extent by adjusting the size of the water pouring channel under the condition that the water head difference between the external water area and the dock is certain, and the water pouring efficiency and the water pouring stability are effectively both realized through the adjustment of the water pouring speed.

The valve mechanism comprises a valve plug, a valve seat, a valve rod and a lifting mechanism, wherein the distance between the valve seat and the bottom end of the valve plug forms a water filling channel which is communicated with a vertical shaft and a water delivery channel, the size of the water filling channel formed between the valve seat and the valve plug is adjusted to a certain extent by adjusting the upper position and the lower position of the valve plug, and the valve mechanism is simple in structure and convenient to operate.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of a valve plug and stem connection;

FIG. 3 is a schematic diagram of a rib cage mated with a valve plug;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of a valve seat;

FIG. 6 is a top view of a valve seat;

FIG. 7 is a schematic diagram of the mating of a grid deck with a wellhead;

fig. 8 is a partial enlarged view at B of fig. 7.

In the figure, an external water area A, a water filling base B, a water inlet channel B1, a water delivery channel B2, a vertical shaft B3, a well wall B31, a valve plug 1, a first limiting guide rail 11, a second limiting guide rail 12, a valve seat 2, a bottom ring 21, a sealing ring 22, a rib plate 23, a rib frame 24, a top frame 24A, a bottom frame 24B, a connecting rod 24C, a first limiting guide groove 24D, a valve rod 3, a connecting support rod 31, a lifting mechanism 4, a grid cover plate 5, a hole 51 and a second limiting guide groove 52.

Detailed Description

The utility model is further illustrated in the following figures and examples, in which:

the terms "upper", "lower", "top", such as "top" and "top", and "bottom", such as "bottom" and "bottom", refer to the directions of the present specification as "upper", "lower", "top", and "top" and "bottom", respectively, and the reference is made to fig. 1.

The traditional dry dock water filling device comprises a vertical shaft B3 communicated with an external water area A through a water inlet channel B1, and a water delivery gallery communicated with the vertical shaft B3 and the dry dock, wherein water in the external water area A such as ocean flows into the vertical shaft B3 through the water inlet channel B1, flows into the water delivery gallery through the vertical shaft B3, and is filled into the dock through the water delivery gallery. A gate valve is generally arranged on the water delivery gallery to cut off flow. It is known that the shorter and better the filling time of the dock, the more efficient the dock is, but from the point of view of safety, the lower the water filling time is, the larger the flow speed is, and the high-speed water flow can generate certain scouring on the wall surface of the gallery and can generate impact on the valve, so that potential safety hazard is caused. On the other hand, too high flow velocity at the outlet of the gallery can cause too severe fluctuation of the water surface in the dock room to influence the berthing stability of the ship. However, in the conventional dry dock irrigation system, no special structure is provided to control the flow rate of water flowing into the water delivery gallery through the shaft B3, and the whole system cannot adjust the irrigation speed.

The utility model relates to a water filling base station B arranged on the side of an external water area A, a vertical shaft B3 is arranged on the water filling base station B, and a water delivery gallery comprises a water delivery channel B2 connected to the bottom of the vertical shaft B3; a valve mechanism for adjusting the opening of the water filling channel between the vertical shaft B3 and the water conveying channel B2 is arranged in the vertical shaft B3.

The valve mechanism for adjusting the opening of the water filling channel between the vertical shaft B3 and the water delivery channel B2 is arranged in the vertical shaft B3, and the opening of the water filling channel is adjusted through the valve mechanism, so that the device has certain water filling speed adjusting capability.

The utility model discloses a dry dock water filling device, which comprises a valve plug 1, a valve seat 2, a valve rod 3 and a lifting mechanism 4. The lifting mechanism 4 is arranged on the irrigation base B. The valve plug 1 is a hollow cylinder structure with at least a through bottom end, and is movably arranged in the vertical shaft B3 along the vertical direction, namely, the valve plug 1 can vertically move up and down along the vertical shaft B3. Be provided with the clearance between valve plug 1 outer wall and shaft B3's the wall of a well, that is, no matter valve plug 1 is in closed or open state, shaft B3 is linked together through inlet channel B1 with face outside waters A all the time, does benefit to the homogeneity that improves valve plug 1 and receives outside water pressure, also is convenient for promote or descend valve plug 1.

The bottom of the valve rod 3 is connected with the valve plug 1, the top is vertically upwards connected with the lifting mechanism 4, and the valve rod 3 is driven to move up and down by the lifting mechanism 4. If the top end of the valve plug 1 is closed, the valve rod 3 can be a rod directly, and the bottom end can be fixedly connected with the top end surface of the valve plug 1 directly. As shown in fig. 2, if the valve plug 1 is a cylinder with two ends penetrating, the bottom end of the valve rod 3 needs to be connected with a plurality of coplanar connecting supporting rods 31, the connecting supporting rods 31 are uniformly distributed around the valve rod 3, and the outer ends of the connecting supporting rods extend to the inner wall of the valve plug 1 and are fixedly connected with the inner wall of the valve plug 1. The connection stay 31 may be arranged in a cross shape, a Y shape, a rice shape, or the like.

The valve seat 2 is fixedly connected to the bottom of the vertical shaft B3, and normally the valve seat 2 and the vertical shaft B3 are poured together, so that the connection reliability of the valve seat 2 and the vertical shaft B3 is ensured.

The interval of disk seat 2 and valve plug 1 bottom constitutes the passageway of watering of intercommunication shaft B3 and water delivery passageway B2, and the regional and water delivery passageway B2 direct communication that the disk seat 2 encloses with valve plug 1 inner wall promptly, and the regional and water inlet passageway B1 that are linked together that valve plug 1 outer wall, disk seat 2 and shaft B3's wall of a well enclose, and the passageway of watering then is used for water delivery passageway B2 and water inlet passageway B1's intercommunication, and the speed of watering then can be adjusted through adjusting the size of passageway of watering. When the bottom end of the valve plug 1 is buckled on the valve seat 2, the valve plug 1 is in a closed state to seal the irrigation channel; when the bottom end of the valve plug 1 releases the valve seat 2, the valve plug 1 is in an open state, and the irrigation channel is opened.

The concrete irrigation operation process is as follows:

when the valve plug 1 is closed, the valve plug 1 is tightly buckled on the valve seat 2, and the sealing structure arranged at the edge position can ensure that the valve plug 1 and the valve seat 2 are watertight. When water needs to be filled into the dry dock, the valve plug 1 is lifted upwards through the lifting mechanism 4, and a water filling channel between the valve plug 1 and the valve seat 2 is opened. At this time, due to the head difference, water in the external water area A sequentially passes through the water inlet channel B1, the water filling channel and the water delivery channel B2 and is filled into the dock. Through along the position of vertical adjustment valve plug 1, can adjust the interval between valve plug 1 and the disk seat 2 to a certain extent, adjust the size of watering passageway promptly to possess certain watering speed adjustment ability. When the water filling operation is finished, the valve plug 1 is lowered through the lifting mechanism 4, and the valve plug 1 is fastened on the valve seat 2 again by utilizing the gravity of the valve plug 1 and the downward pressure of the lifting mechanism 4, and at the moment, a water filling channel between the valve plug 1 and the valve seat 2 is closed again.

For easy manufacture, the valve plug 1 is a hollow cylinder structure with two ends penetrating. In order to ensure that the water filling channel is closed, the valve plug 1 and the valve seat 2 are watertight, and when the valve plug 1 is closed, the bottom end of the valve plug 1 is in sealing fit with the valve seat 2.

The valve seat 2 can be directly formed by pouring an annular bearing platform and a water filling base platform B, and in the embodiment, as shown in fig. 5, the valve seat 2 comprises a bottom ring 21 and a valve core; the bottom of the valve core is fixed with the bottom ring 21 into a whole. The valve core not only has a reinforcing effect on the bottom ring 21, but also can be provided with a guiding structure, and has a guiding effect on the vertical movement of the valve plug 1.

The valve plug 1 can be in sealing fit with the valve plug to realize sealing water tightness between the valve plug 1 and the valve seat 2, but in order to simplify the structure, the bottom end of the valve plug 1 is in sealing fit with the bottom ring 21.

As shown in fig. 6, the bottom of the valve core is fixed inside the bottom ring 21, and a ring of sealing ring 22 is arranged at the position corresponding to the lower edge of the valve plug 1 on the top surface of the bottom ring 21.

The sealing ring 22 can be a rubber sealing ring, when the valve plug 1 is closed, the lower edge opening of the sealing ring is just pressed on the sealing ring 22, so that the sealing when the valve plug 1 is tightly buckled on the bottom ring 21 can be ensured.

The valve core can adopt a cylinder structure and the like, but water needs to be ensured to reach the water delivery channel B2 through the valve core, so if the cylinder structure is adopted, a drainage structure is arranged on the cylinder structure, and in order to further simplify the structure, the valve core preferably comprises a rib frame 24, and the rib frame 24 is a hollowed-out frame structure; the bottom of the rib frame 24 is fixed with the bottom ring 21 into a whole. The rib frame 24 is a hollow frame structure, so that water can pass through the hollow areas among the frames, and the rib frame is simple in structure and convenient to manufacture.

The rib frame 24 comprises a top frame 24A at the top end, a bottom frame 24B at the bottom end and a connecting rod 24C at the middle part; the top frame 24A and the bottom frame 24B are formed by uniformly distributing a plurality of cross bars around the rib frame 24 in the axial direction; the top end of the connecting rod 24C is connected to the center of the top frame 24A, and the bottom end is connected to the center of the bottom frame 24B. The crossbars of the top frame 24A and the bottom frame 24B may be arranged in a cross shape, a Y shape or a rice shape, etc., and the outer ends thereof may have a shape similar to the hollow area of the valve plug 1, i.e., if the valve plug 1 is cylindrical, the outer ends of the top frame 24A and the bottom frame 24B may have a circular shape; if the valve plug 1 is square, the outer ends of the top and bottom brackets 24A, 24B are square. Of course, the shaft B3, the valve plug 1, etc. are preferably circular.

In the up-and-down moving process of the valve plug 1, in order to play a role in limiting and guiding the valve plug 1, the valve plug 1 is prevented from overturning and shaking due to water flow impact in the water irrigation operation, and continuous and reliable operation of the water irrigation device is ensured. Preferably, as shown in fig. 3 and 4, a plurality of first limit rails 11 are distributed along the circumferential direction of the valve plug 1 at the bottom of the valve plug 1, and the first limit rails 11 are fixed on the inner wall of the valve plug 1 and extend along the axial direction of the valve plug 1. A first limit guide groove 24D matched with the first limit guide rail 11 is arranged at the corresponding position of the outer edge of the rib frame 24 and the first limit guide rail 11; the first limiting guide rail 11 is inserted into the first limiting guide groove 24D and is vertically and movably matched with the first limiting guide groove 24D. Namely, the first limit guide rail 11 is closely matched with the first limit guide groove 24D, and the bottom of the valve plug 1 is provided with limit and guide functions on the valve plug 1. The position of the outer edge of the rib frame 24 corresponding to the first limit rail 11 in the present embodiment is provided with the first limit guide groove 24D adapted to the first limit rail 11, which means that the outer end of the top frame 24A is provided with the first limit guide groove 24D, and the outer end of the bottom frame 24B is also provided with the first limit guide groove 24D, so that no matter to which position the valve plug 1 is lifted, the first limit guide groove 24D is always tightly matched with the first limit rail 11.

A plurality of rib plates 23 are arranged between the top frame 24A and the bottom frame 24B; along the radial direction of the rib frame 24, the inner side of the rib plate 23 is fixed on the connecting rod 24C, and the outer side edge extends outwards; along the axial direction of the rib frame 24, the top end of the rib plate 23 extends to the top frame 24A, the bottom end extends to the bottom frame 24B, and the space between the top frame 24A and the bottom frame 24B is divided into a plurality of independent irrigation spaces by the rib plate 23.

A large irrigation space can also meet the requirement of irrigation to a dry dock. But a plurality of independent irrigation spaces can avoid the mutual impact and influence of the irrigation water flow on the opposite sides of the irrigation channel in the circumferential direction as much as possible when the water flow is urgent, thereby reducing the water flow impact and disturbance at the inlet of the irrigation device, ensuring that the water flow stably and efficiently enters the irrigation space and playing a certain role in energy dissipation.

Through the upper and lower position of adjusting valve plug 1, can adjust the size of passageway of watering to a certain extent, under the certain circumstances of water head difference in outside waters and dock, through the mode of adjusting passageway size of watering, can adjust the intensity of watering to a certain extent to realize that the efficiency of watering and the stable effective compromise of watering.

Because there is a gap between the valve plug 1 and the wall of the shaft B3, in order to block the gap at the wellhead and improve the safety, it is preferable that, as shown in fig. 7 and 8, a grid cover plate 5 is disposed at the wellhead of the shaft B3, and a hole 51 for accommodating the up-and-down movement of the valve plug 1 is reserved in the middle of the grid cover plate 5. The grid cover plate 5 is square, integrally covers the wellhead of the vertical shaft B3 and is fixed on the water filling base B, so that gaps between the vertical shaft B3 and the valve plug 1 can be effectively covered, personnel safety can be ensured on one hand, personnel are prevented from falling into the vertical shaft B3, and sundries can be prevented from falling into the vertical shaft B3 on the other hand.

In order to play a limiting and guiding role on the upper part of the valve plug 1, a plurality of limiting guide grooves II 52 are uniformly distributed on the inner edge of the hole 51; along the circumferential direction of the valve plug 1, a plurality of limiting guide rails II 12 are distributed at the top of the valve plug 1, and the limiting guide rails II 12 are fixed on the outer wall of the valve plug 1 and extend along the axial direction of the valve plug 1; the second limiting guide rail 12 is inserted into the second limiting guide groove 52 and is vertically movably matched with the second limiting guide groove 52.

Through spacing and direction in the upper portion of valve plug 1, the spacing guide rail one 11 of the lower part of valve plug 1 and spacing guide slot one 24D's spacing and direction, two are spacing to be led and are cooperated from top to bottom, on the one hand can prevent that valve plug 1 from taking place the displacement of other directions except that the oscilaltion from moving, on the other hand also can effectively avoid valve plug 1 to rock because of rivers impact takes place when filling, ensures equipment safe and reliable operation.

Claims (10)

1. The utility model provides a dry dock water filling device, includes shaft (B3) that pass through inlet channel (B1) and outside waters (A) intercommunication, the water delivery corridor of intercommunication shaft (B3) and dry dock, its characterized in that: the water delivery gallery comprises a water delivery channel (B2) connected to the bottom of the shaft (B3); a valve mechanism for adjusting the opening of the water filling channel of the vertical shaft (B3) and the water conveying channel (B2) is arranged in the vertical shaft (B3).

2. The dry dock watering apparatus of claim 1 wherein: the valve mechanism comprises a valve plug (1), a valve seat (2), a valve rod (3) and a lifting mechanism (4); the valve plug (1) is of a hollow cylinder structure with at least the bottom end communicated, the valve plug (1) is movably arranged in the vertical shaft (B3) along the vertical direction, and a gap is formed between the outer wall of the valve plug (1) and the wall of the vertical shaft (B3); the bottom end of the valve rod (3) is connected with the valve plug (1), the top end of the valve rod is vertically upwards connected with the lifting mechanism (4), and the valve rod (3) is driven to move up and down by the lifting mechanism (4); the valve seat (2) is fixedly connected to the bottom of the vertical shaft (B3), and the valve plug (1) is buckled on the valve seat (2) and is vertically and movably connected with the valve seat (2); the space between the valve seat (2) and the bottom end of the valve plug (1) forms a water filling channel for communicating the vertical shaft (B3) with the water conveying channel (B2); when closed, the bottom end of the valve plug (1) is buckled on the valve seat (2) to close the irrigation channel.

3. The dry dock watering apparatus of claim 2 wherein: the valve plug (1) is of a hollow cylinder structure with two through ends, and when the valve plug is closed, the bottom end of the valve plug (1) is in sealing fit with the valve seat (2).

4. A dry dock watering apparatus according to claim 2 or claim 3 wherein: the valve seat (2) comprises a bottom ring (21) and a valve core; the bottom of the valve core is fixed with the bottom ring (21) into a whole; the bottom end of the valve plug (1) is in sealing fit with the bottom ring (21).

5. The dry dock watering apparatus of claim 4 wherein: the bottom of the valve core is fixed on the inner side of the bottom ring (21), and a circle of sealing ring (22) is arranged at the position corresponding to the lower edge opening of the valve plug (1) on the top surface of the bottom ring (21).

6. The dry dock watering apparatus of claim 5, wherein: the valve core comprises a rib frame (24), and the rib frame (24) is of a hollowed-out frame structure; the bottom of the rib frame (24) and the bottom ring (21) are fixed into a whole.

7. The dry dock watering apparatus of claim 6 wherein: the rib frame (24) comprises a top frame (24A) at the top end, a bottom frame (24B) at the bottom end and a connecting rod (24C) at the middle part; the top frame (24A) and the bottom frame (24B) are formed by uniformly distributing a plurality of cross bars around the axial direction of the rib frame (24); the top end of the connecting rod (24C) is connected to the center of the top frame (24A), and the bottom end is connected to the center of the bottom frame (24B).

8. The dry dock watering apparatus of claim 7, wherein: a plurality of first limit guide rails (11) are distributed at the bottom of the valve plug (1) along the circumferential direction of the valve plug (1), and the first limit guide rails (11) are fixed on the inner wall of the valve plug (1) and extend along the axial direction of the valve plug (1);

a first limit guide groove (24D) matched with the first limit guide rail (11) is arranged at the corresponding position of the outer edge of the rib frame (24) and the first limit guide rail (11); the first limit guide rail (11) is inserted into the first limit guide groove (24D) and is vertically and movably matched with the first limit guide groove (24D).

9. The dry dock watering apparatus of claim 8, wherein: a plurality of rib plates (23) are arranged between the top frame (24A) and the bottom frame (24B); along the radial direction of the rib frame (24), the inner side of the rib plate (23) is fixed on the connecting rod (24C), and the outer side edge extends outwards; along the axial direction of the rib frame (24), the top end of the rib plate (23) extends to the top frame (24A), the bottom end of the rib plate extends to the bottom frame (24B), and the space between the top frame (24A) and the bottom frame (24B) is divided into a plurality of mutually independent irrigation spaces through the rib plate (23).

10. A dry dock watering apparatus according to any one of claims 1 to 3 wherein: a grid cover plate (5) is arranged at the wellhead of the vertical shaft (B3), and a hole (51) for allowing the valve plug (1) to move up and down is reserved in the middle of the grid cover plate (5); a plurality of limiting guide grooves II (52) are uniformly distributed on the inner edge of the hole (51);

a plurality of second limit guide rails (12) are distributed at the top of the valve plug (1) along the circumferential direction of the valve plug (1), and the second limit guide rails (12) are fixed on the outer wall of the valve plug (1) and extend along the axial direction of the valve plug (1);

the second limiting guide rail (12) is inserted into the second limiting guide groove (52) and is vertically and movably matched with the second limiting guide groove (52).