Assembled partial discharge shielding room

Physical picture of shielding room (shielding room)insidewallkeel+T50 rock wool board+Metal edging decoration, roomoutsideWall spraying treatment)

Ø Bottom design of shielding room

The bottom of the shielding room adopts3mmGalvanized steel plate, floor3Mm galvanized steel sheetdirectSpread oninsulationfloorOn the layer,Shielding indoor floor to withstandpressurenot less than1T/m²The unevenness of the workshop floor is less than1mm/m².

Insulated floor adopts3Isolation layer composed of welded mmPP insulation board, insulation floor size: length6.5mX width6.0mRequirements for insulation resistance between the test area and the outside worldAbove 10k Ω, ensure that there is no electrical connection between the entire testing system and the workshop to prevent interference signals from other electrical equipment in the production workshop from being transmitted to the surface or underground metal parts (such as steel bars) in the testing area through electrostatic coupling, and ultimately transmitted to the testing circuit through the ground wire.

Ø Design of Shielding Room Wall

Shielding wall adopts2mmGalvanized steel plates are used to make shielding modules, which are continuously spliced together. The wall shielding module is made of galvanized steel sheet and rectangular tubular steelframeworkSupport.

Ø Design of the top structure of the shielding room

The top structure of the shielding room is composed of2mm galvanized steel plate is used to make shielding modules, and the top plate of the shielding chamber is installed above the inner side of the side plate. In order to distribute the weight of the shielding body and reduce the sinking of the middle part of the top of the shielding body, several reinforcing beams are installed above the top to effectively reduce the deformation of the top steel plate and ensure that the sinking of the top is ≤ 8mm within two years.

Ø Design of Shielded Room Doors

Electric airtight shielded sliding door net size: width3.0m×高2.5m（oneFan, sample entry and exit)

The structure of the shielded room door is a single fan flatMobile electricityThe door panel is made of cold-rolled steel plate and channel steel frame welded together. The four edges of the door and the surrounding area of the door frame must be welded with cut-off waveguide edges and auxiliary waveguides.

Operation steps for electric door movement: Press the door closing button to close the doorAfter the door is in place, the inflation valve will automatically open to a certain pressure, and then the inflation valve will automatically close, and the shielding chamber will enter the working state; Press the door opening button to automatically open the inflation valve and shield door. The moving mechanism motor and shield door will open automatically.

The door is equipped with a power control switch for entering and exiting the door. After the door is closed, it can be closed for testing. Once closed, if it is opened during the test, the internal power will be automatically cut off.

The door is equipped with a safety light barrier. When the door moves, such as when it is closed, if an object or person forcefully passes through, the door will immediately stop moving.

Shielding materials for airbags: beryllium bronze, copper mesh.

The gas source for the on-site platform screen door shall be provided by the purchaser (industrial gas source, with a pressure requirement of not less than0.6Mpa， In the future, it will be used for the entrance of the shielding room. If there is no industrial gas source, the storage capacity should be ≥8L's air compressor).

Manual single lock screen door net size: width0.9m×高1.9M (one fan, personnel entering and exiting)

（1) The structure adopts hinge rotation, blade type manual shielding door, dual point locking mechanism, double-layer electromagnetic sealing spring, and the spring is made of beryllium bronze material processed and formed to achieve good elasticity and wear resistance after vacuum heat treatment. The shielding spring is detachable, with each section less than 198mm in length. If there are any local issuesDamaged and easy to replace, no need for professional maintenance.

（2) The blade of the plug-in shielded door is made of brass plate.

（3) Due to the fact that the spring and its contact part (the blade of the shielding door) are made of the same material and have the same potential difference, there will be no electrical corrosion at the contact points, ensuring long-term shielding effectiveness.

（4) The locking device is installed on the upper part of the door frame, and a double point wedge locking mechanism is installed on the left side of the door frame. The operation of the wedge seat frame adopts a roller groove structure.

（5) The locking operation device is installed in the middle of the door panel, and its gear mechanism greatly reduces the force of opening the platform screen door. A double point wedge locking mechanism is installed on the left side of the door frame, and the operation of the wedge seat frame adopts a bearing groove structure, which runs smoothly and lightly.

（6) The locked platform screen door is designed to be interlocked and can be operated both indoors and outdoors.

Manual door materials: ordinary brass and beryllium bronze.

（2） Grounding system

The grounding system of the shielding room adopts a separate grounding method from the grounding system of the factory power grid, that is, a single point grounding with insulated floor isolation and a separate grounding electrode. Require grounding resistance not to exceed0.5Ωbuyerresponsible for）.

（3） TheCut off waveguide window and ventilation system

This scheme uses hexagonal waveguideTwo waveguide windows with dimensions of 300 × 300, hole spacing of 4.2mm, and cutoff frequency of 20GHz.

Install forced ventilation at the position of the cutoff waveguide window to achieve air exchange between the shielded indoor and outdoor areas. The entire shielding room adoptsThe method of 1 inlet and 1 outlet. Installed in the control room.

（4） Shielding indoor power supply, distribution, and lighting systems

Require the demand party toPower cables with a diameter of 3 * 16mm ² and 1 * 10mm ² are led from the secondary distribution cabinet to the proposed area;The indoor power supply adopts conduit wiring.

three-phaseYyn0 connection can output 380V and 220V voltage to meet the needs of different devices.

The power supply needs to enter the shielding room through a filter, and then be transmitted to the lighting and various electrical equipment through the shielding room distribution box.

Install a distribution box at an appropriate location in the shielding room according to the usage requirements（PZ308~10P）， One built-in device power switch (220V/63A) and one instrument power switch (220V/16A),.

light switch2 sets (two combination type, separate control of control room lights and test area lights), 3 sets of 2+3 sockets (10A) for the test area power supply, 1 set of dedicated socket (16A) for the control room air conditioning power supply, and 2 sets of 2+3 sockets for other electrical power supplies. The specific installation location will be determined on site.

Installation at the top of the shielding roomFour lamps without electromagnetic interference, including three in the experimental area and one in the control room. The supplier shall reasonably determine the gap between the lamps based on the installation height. Ensure the uniformity of indoor light shielding.

（5） Theinterior decoration

Indoor decoration requirements, the selected materials should be flame retardant or flame-retardant.

1appearance4 sidesWall: spray coating treatment;

2. RoominsideWall: Roominsidekeel+T50 rock wool board+Metal edging decoration;

3Ground: Galvanized surface without additional decoration;.

4control room

Control room size: long5M x width 2m x height 3.5m， One set of 0.8m (height) x 1.5m (length) observation windows is set up in the control room facing the test area. The observation windows are made of transparent 5mm+5mm thick tempered glass with stainless steel mesh, as shown in Figure 6. The control room partition adopts integrated wall panels and keels, and is equipped with a personnel access door with a size of 0.9m in width and 1.9m in height. The door is equipped with a power control on/off switch for access.After the door is closed, it can be closed for testing. If it is opened during the test, the internal power will be automatically cut off.