CN205141485U - Gentle straight module dismounting device - Google Patents

Abstract

The utility model provides a flexible straight module dismounting device, which comprises a fixed plate assembly, a sliding module assembly and a movable pulley assembly; Installed on the guide rail, the movable pulley assembly is installed under the sliding module assembly through a steel wire rope, and a wire rope pulling device is installed on the sliding module assembly. The flexible straight module is hung on the movable pulley assembly, and the flexible straight module is moved by pulling the steel wire rope and moving the pulley assembly to the appropriate position; it solves the problems of poor safety and high labor intensity of the current on-site power unit disassembly method, and greatly improves the labor intensity, safety and efficiency of workers disassembling the tooling. At the same time, the device has the advantages of simple installation and low manufacturing cost. The advantage of low cost is especially suitable for the disassembly and assembly of valve assembly modules for flexible direct current direct current transmission.

Description

A flexible straight module removal device

technical field

The utility model relates to a dismantling tool, in particular to a flexible straight module dismantling device.

Background technique

Flexible DC transmission technology (VoltageSourcedConverter, VSC) is a voltage source converter that can turn off devices such as gate turn-off thyristors (GTO), insulated gate bipolar transistors (IGBT) and pulse width modulation (PWM) Technology-based new direct current transmission technology. Foreign academic circles call this power transmission technology VSC-HVDC, and domestic academic circles call this power transmission technology flexible DC transmission. Manufacturers ABB and Siemens named this power transmission technology HVDCLight and HVDCPlus respectively. Compared with the traditional thyristor-based current source DC transmission technology, the flexible DC transmission technology has the advantages of high controllability, convenient design and construction, small footprint and no communication between converter stations. It has obvious advantages in grid-connected power generation, island power supply, and urban grid power supply. With the rapid development of high-power full-control power electronic devices, flexible direct current transmission technology has received more and more attention and application in the field of high-voltage direct current transmission.

In the current engineering application, flexible DC DC transmission technology mainly exists in the form of flexible DC DC valve towers. Taking the Nanao Soft Straight Project as an example, the valve field of the entire project is composed of two sets of three-phase valve towers, a total of six valve towers. Each valve tower is divided into four layers of valves, each layer of valves is composed of 8 valve sections, and each valve section has 7 unit modules. The on-site assembly of the flexible straight valve tower is completed by assembling a single valve section, and then the overall hoisting and cascading assembly is completed on the construction site, so there is no disassembly and assembly of the power module on the construction site. However, after the installation of the entire valve tower is completed, in the test stage and trial operation stage, due to various objective reasons such as test and maintenance, there is a problem of replacing multiple power unit modules.

However, the main problems of the current on-site power unit disassembly method are: poor safety and high labor intensity. There are four main reasons: first, the weight of the power module is heavy, and the weight of a single power module is 130KG, which exceeds the weight that the human body can bear; second, it reaches the load-bearing limit of the lift truck. In the worst working condition, the weight of 3 people plus a power module on the vehicle is basically beyond the safe support range of the platform vehicle; 3: The actual operating space is too small. Since the maximum distance between the upper and lower valve sections is 1550mm, workers have to bend over when lifting the module, so there is basically no labor safety; Fourth, the replacement process takes too long. The replacement time for a single power module is about 60 minutes.

Utility model content

The purpose of the utility model is to provide a flexible straight module removal device with simple structure, small volume, low manufacturing cost, convenient use, labor saving and high safety.

In order to achieve the above object, the utility model takes the following technical solutions to achieve:

A flexible straight module removal device, comprising a fixed plate assembly, a sliding module assembly and a movable pulley assembly; the fixed plate assembly includes a support plate, a hanging arm fixed on the support plate and a guide rail, and the slide module assembly is installed on the guide rail The movable pulley assembly is installed under the sliding module assembly through a steel wire rope, and a wire rope pulling device is also installed on the sliding module assembly. The flexible straight module is hung on the movable pulley assembly, and the flexible straight module is moved to a suitable position by pulling the steel wire rope and moving the pulley assembly.

Further, a chain hoist is installed above the sliding module assembly, and the movable pulley assembly is lifted by the chain hoist.

Further, the sliding module assembly is composed of two hanging boards connected, rollers are installed between the two hanging boards, and the sliding module assembly is installed on the guide rail through the rollers.

Further, two sets of hanging arms are installed in parallel on the support plate, and the hanging arms are made of angle steel.

Further, the movable pulley assembly consists of two splints fixing two pulleys, and a suspension hook is installed under the splints.

Further, double guide rails are installed on the fixed plate assembly.

The flexible straight module dismantling device of the utility model is composed of a fixed plate assembly, a sliding module assembly and a movable pulley assembly. The dismantling device is suspended on the insulating beam of the flexible straight valve tower through the hanging arm of the fixed plate assembly, and then passed through the lifting device and the guide rail. For the transportation of the flexible straight module up and down and in and out, 3/4 of the force can be saved due to the use of movable pulleys. After the module is lifted to an appropriate position, the flexible straight module can be moved out of the flexible straight valve tower by moving the guide rail rollers on the hanging plate Until the mobile platform is in the right position, the form of overcoming rolling friction is used instead of the original form of static friction, which solves the problems of poor safety and high labor intensity of the current on-site power unit disassembly method, and makes the labor intensity and safety of workers disassemble the tooling , efficiency have been greatly improved, and at the same time, the device has the advantages of simple installation and low manufacturing cost, and is especially suitable for the disassembly and assembly of valve assembly modules for flexible direct current direct current transmission.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the mechanism

detailed description

Below in conjunction with accompanying drawing and embodiment this mechanism is described in further detail:

As shown in FIG. 1 , the flexible straight module unit disassembly device is composed of a fixed plate assembly 1 , a sliding module assembly 2 , a movable pulley assembly 3 , a steel wire rope 4 , and a chain hoist 5 .

The fixed plate assembly 1 includes a support plate 101, a hanging arm 102 fixed on the support plate and a guide rail 103. The fixed plate assembly 1 is equipped with double guide rails 103, and two groups of hanging arms 102 are installed in parallel on the support plate 101. The hanging arms 102 are made of angle steel production. The sliding module assembly 2 is installed on the guide rail, the movable pulley assembly 3 is installed below the sliding module assembly 2 through the steel wire rope 4, and a wire rope lifting device is also installed on the sliding module assembly 2, and the flexible straight module is hung on the movable pulley assembly. The steel wire rope 4 translationally moves the pulley assembly to move the flexible straight module to a suitable position.

A chain block 5 is installed above the sliding module assembly 2, and the movable pulley assembly 3 is lifted by the chain block 5. The sliding module assembly 2 is formed by connecting two hanging boards, rollers are installed in the middle of the two hanging boards, and the sliding module assembly 2 is installed on the guide rail 103 through the rollers.

The movable pulley assembly 3 is composed of two splints fixing two pulleys, and a suspension hook is installed below the splint.

During use, first find the faulty flexible straight module unit, hang the fixed plate assembly 1 on the insulating I-beam on the upper floor, and make preparations, then hang the flexible straight power module on the movable pulley assembly 3, and pull it by hand The hoist 5 lifts the flexible straight power module to an appropriate height. Due to the use of the movable pulley principle, the force used to lift the module is much smaller. Then, through the sliding module assembly 2 (with rollers) suspended on the guide rail, the movable pulley assembly 3, the steel wire rope 4, and the flexible straight module are pushed out of the flexible straight valve tower as a whole, and finally the flexible straight module is disassembled and placed on the mobile platform vehicle to complete the entire disassembly process.

The use of this mechanism can greatly improve the problems of heavy labor, poor safety, and long labor time during the disassembly process of the soft straight power module, and can play a very critical role in the maintenance of the soft straight valve field.

Claims (6)

1. A flexible straight module removal device, characterized in that: comprise a fixed plate assembly (1), a sliding module assembly (2) and a movable pulley assembly (3); said fixed plate assembly (1) includes a support plate (101), It consists of a hanging arm (102) fixed on the support plate and a guide rail (103), the sliding module assembly (2) is installed on the guide rail, and the movable pulley assembly (3) is installed under the sliding module assembly (2) through a steel wire rope (4) , the sliding module assembly (2) is also equipped with a wire rope lifting device, the flexible straight module is hung on the movable pulley assembly, and the flexible straight module is moved to a suitable position by pulling the steel wire rope (4) and moving the pulley assembly in translation. 2. The flexible straight module removal device according to claim 1, characterized in that: a chain hoist (5) is installed above the sliding module assembly (2), and the movable pulley assembly (3) is lifted by the chain hoist (5) . 3. The flexible straight module removal device according to claim 1, characterized in that: the sliding module assembly (2) is composed of two hanging boards connected, and rollers are installed in the middle of the two hanging boards, and the sliding module assembly (2) passes through the rollers. Install on the guide rail (103). 4. The flexible straight module removal device according to any one of claims 1-3, characterized in that: two groups of hanging arms (102) are installed in parallel on the supporting plate (101), and the hanging arms (102) are made of angle steel become. 5. The flexible straight module removal device according to any one of claims 1-3, characterized in that: the movable pulley assembly (3) consists of two splints fixing two pulleys, and a suspension hook is installed under the splint. 6. The flexible straight module removal device according to any one of claims 1-3, characterized in that: double guide rails (103) are installed on the fixing plate assembly (1).