Extension device for cargo oil tank valve rod

Abstract

The cargo oil tank valve rod extending device comprises at least two transmission pipes, at least one reinforcing assembly and at least one transmission pipe connector, the at least two transmission pipes are sequentially arranged in a straight line from top to bottom, and the opposite ends of every two adjacent transmission pipes are rotationally connected with the same transmission pipe connector. The reinforcing assembly is vertically connected with the structural bulkhead, and the transmission pipe joint is connected with the reinforcing assembly. The utility model provides a cargo oil tank valve rod extending device which is attractive and simple in overall appearance, saves installation space, saves cost, improves transmission efficiency (operation is convenient, safe and reliable), and improves segmented preassembling rate.

Description

Technical Field

[0001] This utility model belongs to the field of shipbuilding technology, and specifically relates to a valve stem extension device for a cargo oil tank. Background Technology

[0002] Valve stem extension devices are remote transmission devices for operating valves, and are one of the important components for remote control of marine valves. They are widely used in areas such as pump rooms and cargo oil tanks. Their characteristic is a relatively long transmission distance. They are mainly installed in confined areas where space is limited or operation is inconvenient, in submerged water, or in places inaccessible to operators. In these situations, remote control is necessary, providing both connection and convenient, quick, and easy control and operation from a distance.

[0003] Conventional valve stem extension devices are attached. Figure 4 It consists of an operating head, gear set, universal joint, bracket, transmission pipe, etc. During the shipbuilding design and layout process, the valve stem extension device is usually arranged after the piping and valve accessories are laid out. At this point, the dense piping, limited space, and professional coordination often present difficulties in arranging the valve stem extension device. Sometimes, it is necessary to add several transmission elements to operate the longitudinal valve. Although this seems to solve the operational problem, this arrangement also brings many subsequent issues. This is especially true in the current active market for oil tankers and chemical tankers. The transmission devices in the oil tanks are relatively concentrated; a single ship may have dozens or even hundreds of transmission devices. Without various optimizations, this will undoubtedly lead to the following series of problems.

[0004] One: Excessive addition of transmission components: 1) Firstly, it results in an untidy and aesthetically pleasing layout; secondly, it leads to excessive material waste and is not the most ideal design for cost control. 2) It lengthens the transmission path, making operation more time-consuming and labor-intensive for users, and increasing the likelihood of universal joints seizing and jamming during use. 3) It increases the difficulty of installation and the need for precision control for workers. Valve stem extension devices generally have long transmission distances, often requiring passage through several platforms from the bottom of the tank to the deck. Adding transmission components inevitably increases the workload on-site and makes it impossible to guarantee installation accuracy.

[0005] 2. Bushing bracket type: The national standard bracket type is bolt connection (see attached). Figure 2 This means that the valve body support and the vibration damping support are fixed with bolts to achieve vibration reduction. For tanks carrying oil, ship operation may cause friction between moving parts, and this design poses certain safety hazards to oil tankers. Secondly, this type of intermediate vibration damping support cannot be pre-installed.

[0006] Thirdly, the through-holes for the transmission pipes on each platform could not be cut manually. Due to the increased number of components, the cumulative installation errors were relatively large, making it impossible to achieve the same installation precision as the design on-site. Manual drilling significantly increased the on-site workload. A large amount of work was moved to the final assembly stage, which was detrimental to the integrity of the special-coated compartment.

[0007] In conclusion, while meeting the requirements of the specifications, optimizing the design of the cargo oil tank valve stem extension device in terms of operating space, maintenance, construction environment, and cost control is a key issue that must be considered in the design process. Utility Model Content

[0008] To address the aforementioned issues, this utility model provides a cargo oil tank valve stem extension device that is aesthetically pleasing and simple, saves installation space and costs, improves transmission efficiency (easy to operate, safe and reliable), and increases the pre-installation rate of sections.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A cargo oil tank valve stem extension device includes at least two drive pipes, at least one reinforcing component, and at least one drive pipe joint. The at least two drive pipes are arranged in a straight line from top to bottom. The opposite ends of two adjacent drive pipes are rotatably connected to the same drive pipe joint. The reinforcing component is vertically connected to the structural bulkhead, and the drive pipe joint is connected to the reinforcing component.

[0011] Furthermore, the reinforcing component includes a shock-absorbing bracket, with a first pad and a second pad fixed at both ends of the reinforcing component, the first pad being fixedly connected to the structural bulkhead, and the transmission pipe joint being fixedly connected to the second pad via a bushing bracket.

[0012] Furthermore, the second pad is perpendicularly inserted through the end of the bushing bracket away from the transmission pipe joint.

[0013] Furthermore, the bushing bracket has a length of not less than 50 mm on the side of the second pad closest to the structural bulkhead.

[0014] Furthermore, the first pad has a triangular longitudinal section, the second pad has a square longitudinal section, and the bushing bracket is arranged coaxially with the second pad.

[0015] Furthermore, the shock-absorbing bracket is made of right-angled angle steel, and the central axis of the bushing bracket is located inside the shock-absorbing bracket.

[0016] Furthermore, the transmission pipe joint includes an intermediate shaft and an end joint. The end joint passes through the intermediate shaft and is rotatably connected to it. One end of the bushing bracket is fixedly connected to the outer wall of the intermediate shaft perpendicularly. Both ends of the end joint have pin holes with their central axes perpendicular to the end joint. Both ends of the end joint extend into the transmission pipe. The end of the transmission pipe near the transmission pipe joint is connected to the transmission pipe joint through a pin passing through the pin hole.

[0017] This utility model features a detachable protective ramp for deck pipe valves. Its simple structure and convenient operation effectively solve technical problems that traditional pipeline protection devices cannot address, improving construction efficiency and ensuring crew safety. It has a wide range of applications and is worthy of promotion. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the cargo oil tank valve stem extension device described in this utility model.

[0019] Figure 2 This is a schematic diagram of the transmission pipe connector described in this utility model.

[0020] Figure 3 This is a schematic diagram showing the positional relationship between the second pad and the shock-absorbing bracket described in this utility model.

[0021] Figure 4 This is a schematic diagram of the valve stem extension device described in this utility model in use.

[0022] Figure 5 This is a schematic diagram of a conventional valve stem extension device.

[0023] Among them, 1-transmission pipe, 2-transmission pipe joint, 3-vibration damping bracket, 4-first pad, 5-second pad, 6-bulb bracket, 7-structural bulkhead, 21-intermediate shaft, 22-end joint, 221-pin through hole, 23-pin, 8-operating head, 9-vibration damping reinforcement bracket, 10-gear set, 11-transmission pipe, 12-universal joint, 13-bracket, 14-gate valve. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-3 As shown, a cargo oil tank valve stem extension device includes at least two drive pipes 1, at least one reinforcing component, and at least one drive pipe joint 2. The at least two drive pipes 1 are arranged in a straight line from top to bottom. The opposite ends of two adjacent drive pipes 1 are rotatably connected to the same drive pipe joint 2. The reinforcing component is vertically connected to the structural bulkhead, and the drive pipe joint 2 is connected to the reinforcing component.

[0026] It is understandable that by arranging the transmission pipe 1 in a straight line from top to bottom through the transmission pipe joint 2, the number of bushing supports can be greatly reduced. For a 12-meter cabin, only 1 to 2 supports are needed for simple operation. Optimized layout improves installation accuracy and reduces material waste. This ensures that, while meeting specifications, the control valve is opened and closed using the fewest components and the optimal transmission route, avoiding the occurrence of jamming issues caused by universal joints and gear sets from the design stage.

[0027] The reinforced components can prevent the transmission pipe 1 from shaking during use due to its large length, which would affect the opening and closing of the valve.

[0028] Furthermore, the reinforcing component includes a shock-absorbing bracket 3, with a first pad 4 and a second pad 5 fixed at both ends of the reinforcing component, the first pad 4 being fixedly connected to the structural bulkhead 6, the transmission pipe joint 2 being fixedly connected to the second pad 5 via a bushing bracket 6, and the end of the bushing bracket 6 away from the transmission pipe joint 2 perpendicularly passing through the second pad 5; the length of the bushing bracket 6 on the side of the second pad 5 near the structural bulkhead 7 is not less than 50mm.

[0029] Specifically, the longitudinal section of the first pad 4 is triangular, the longitudinal section of the second pad 5 is square, and the bushing bracket 6 is arranged with the second pad 5 on the same central axis; the shock-absorbing bracket 3 is a right-angle steel, and the central axis of the bushing bracket 6 is located inside the shock-absorbing bracket 3.

[0030] Compared to traditional valve stem extension devices, this utility model optimizes the form of the anti-vibration bracket 3 welded to the structure. By increasing the circumference of the pad, it effectively solves the errors in various directions during the installation of the transmission pipe 1. An additional 50mm is added to the anti-vibration bracket 3 for on-site adjustment in this direction. Using the reinforcing components in this embodiment, the anti-vibration bracket 3 can be completely disassembled into sections for pre-assembly, greatly reducing the amount of subsequent assembly work, enabling low-altitude operations at heights and open-top operations in enclosed compartments, further minimizing shipbuilding costs.

[0031] Furthermore, the transmission pipe connector 2 includes an intermediate shaft 21 and an end connector 22. The end connector 22 passes through the intermediate shaft 21 and is rotatably connected to the intermediate shaft 21. One end of the bushing bracket 6 is vertically fixedly connected to the outer side wall of the intermediate shaft 21. Both ends of the end connector 22 are provided with pin through holes 221 whose central axis is perpendicular to the end connector 22. Oppositely arranged pin through holes are provided on the opposite side walls of the connection end of the transmission pipe 1 and the transmission pipe connector. Both ends of the end connector 22 extend into the transmission pipe 1. The end of the transmission pipe 1 near the transmission pipe connector 2 is connected to the transmission pipe connector 2 through a pin 23 passing through the pin through hole 221.

[0032] It is understood that the transmission pipe connector 2 is detachably connected to the transmission pipe 1 via a pin 23, which facilitates the replacement of the transmission pipe 1.

[0033] The optimized layout greatly solved the problem of on-site installation accuracy of the valve stem extension device. The multiple openings of the transmission pipe 1 through the platform were submitted in the early design stage through the opening software program, which enabled simultaneous digital cutting and opening. This strengthened the control of intermediate products and reduced the amount of manual opening work on site. Only the opening on the top layer (deck surface) was retained for on-site adjustment.

[0034] Those skilled in the art should understand that the above description is merely a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cargo oil tank valve stem extension device, characterized in that, It includes at least two transmission pipes, at least one reinforcing component, and at least one transmission pipe joint. The at least two transmission pipes are arranged in a straight line from top to bottom. The opposite ends of two adjacent transmission pipes are rotatably connected to the same transmission pipe joint. The reinforcing component is vertically connected to the structural bulkhead, and the transmission pipe joint is connected to the reinforcing component.

2. The cargo oil tank valve stem extension device according to claim 1, characterized in that, The reinforcing component includes a shock-absorbing bracket, with a first pad and a second pad fixed at both ends of the reinforcing component, the first pad being fixedly connected to the structural bulkhead, and the transmission pipe joint being fixedly connected to the second pad via a bushing bracket.

3. The cargo oil tank valve stem extension device according to claim 2, characterized in that, The second pad is perpendicularly inserted through the end of the bushing bracket away from the transmission pipe joint.

4. A cargo oil tank valve stem extension device according to claim 3, characterized in that, The bushing bracket is located on the side of the second pad closest to the structural bulkhead, with a length of not less than 50 mm.

5. A cargo oil tank valve stem extension device according to claim 4, characterized in that, The first pad has a triangular longitudinal section, the second pad has a square longitudinal section, and the bushing bracket is arranged on the same central axis as the second pad.

6. A cargo oil tank valve stem extension device according to claim 5, characterized in that, The shock-absorbing bracket is made of right-angled steel, and the central axis of the bushing bracket is located inside the shock-absorbing bracket.

7. A cargo oil tank valve stem extension device according to any one of claims 2 to 6, characterized in that, The transmission pipe joint includes an intermediate shaft and an end joint. The end joint passes through the intermediate shaft and is rotatably connected to it. One end of the bushing bracket is fixedly connected to the outer wall of the intermediate shaft perpendicularly. Both ends of the end joint have pin holes with their central axes perpendicular to the end joint. Both ends of the end joint extend into the transmission pipe. The end of the transmission pipe near the transmission pipe joint is connected to the transmission pipe joint through a pin passing through the pin hole.

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