Brackets and mounts
CNG Gas Leakage Detection & Automatic Gas Supply Closure - Demo Assembly
- Bounding box
- 1271.6 × 200.0 × 78.0 mm
- Engine
- Precision B-rep
- Parameters
- 82
- Published
- October 27, 2026
Download
Free to download and use. See the terms.
The prompt
I want you to create a practical AutoCAD design for my final-year mechanical engineering project titled **“CNG Gas Leakage Detection and Automatic Gas Supply Closure Mechanism.”** The design should look like a real engineering student's project, made carefully in AutoCAD. Keep it simple, realistic, technically understandable, and suitable for a college project submission. Do not make it look like a futuristic concept, a promotional poster, or an AI-generated illustration. **Project components to include:** - MQ-4 methane gas sensor module - Arduino Uno R3 - 5V relay module - 12V DC power supply - 12V-to-5V buck converter - Buzzer - Red and green LED indicators - Transparent demonstration tube - Non-operational demonstration valve - Jumper wires, mounting brackets, and rectangular base plate **Design requirements:** 1. Create a proper 2D AutoCAD engineering drawing with top, front, and side views. 2. Show each component in a realistic position on the base plate. 3. Add a simple isometric view to help understand the overall assembly. 4. Use clean lines, standard engineering dimensions, simple labels, and normal technical drawing conventions. 5. Use a plain white background and a restrained engineering drawing style. 6. Keep the components proportional to their real-world sizes. If exact dimensions are unavailable, mark dimensions as assumed and suitable for a prototype. 7. Show the wiring layout clearly, but do not make up unverified electrical connections. 8. Use readable text, consistent dimension lines, and a proper title block with project name, drawing number, units, and scale. 9. Avoid excessive colours, unnecessary effects, unrealistic component shapes, decorative graphics, and complicated rendering. 10. Make the final drawing editable in AutoCAD and suitable for further modification by a mechanical engineering student. **Deliverables:** - Editable AutoCAD DXF file - PDF engineering drawing sheet - A clear preview image of the design **Important:** This is a laboratory demonstration prototype only. Do not design it for connection to a live CNG pipeline or pressurised fuel supply. Clearly identify the valve as a demonstration component. The final result should look like a genuine, carefully prepared student engineering drawing that I can understand, explain during my viva, and modify myself in AutoCAD. Do not claim that the design has been physically tested or verified.
Parameters
| Name | Value | Range |
|---|---|---|
| Exploded View Gap | 15 mm | 2 – 60 |
| Base Plate Length | 300 mm | 100 – 600 |
| Base Plate Width | 200 mm | 80 – 400 |
| Base Plate Thickness | 5 mm | 2 – 20 |
| Mounting Hole Inset | 12 mm | 5 – 40 |
| Mounting Hole Dia | 5 mm | 2 – 12 |
| Arduino Uno PCB Length | 68.6 mm | 40 – 120 |
| Arduino Uno PCB Width | 53.4 mm | 30 – 100 |
| PCB Thickness | 1.6 mm | 0.8 – 4 |
| Component Height | 15 mm | 4 – 40 |
| Standoff Height | 10 mm | 2 – 30 |
| Standoff Diameter | 6 mm | 3 – 14 |
| MQ-4 PCB Length | 32 mm | 15 – 70 |
| MQ-4 PCB Width | 20 mm | 10 – 50 |
| MQ-4 PCB Thickness | 1.6 mm | 0.8 – 4 |
| Sensor Can Diameter | 16 mm | 8 – 30 |
| Sensor Can Height | 15 mm | 5 – 30 |
| Buzzer Diameter | 12 mm | 6 – 30 |
| Buzzer Height | 10 mm | 4 – 25 |
| Buzzer Sound Hole Dia | 3 mm | 1 – 8 |
| Buzzer Sound Hole Depth | 2 mm | 0.5 – 6 |
| LED Body Diameter | 5 mm | 3 – 10 |
| LED Body Length | 8 mm | 3 – 20 |
| LED Flange Diameter | 8 mm | 4 – 14 |
| LED Flange Thickness | 1 mm | 0.5 – 4 |
| LED Mount Clip Length | 8 mm | 3 – 20 |
| LED Mount Clip Width | 4 mm | 2 – 12 |
| LED Mount Clip Height | 1 mm | 0.5 – 4 |
| LCD PCB Length | 80 mm | 30 – 160 |
| LCD PCB Width | 36 mm | 15 – 80 |
| LCD PCB Thickness | 1.6 mm | 0.8 – 4 |
| LCD Glass Length | 72 mm | 25 – 150 |
| LCD Glass Width | 26 mm | 10 – 60 |
| LCD Glass Height | 6 mm | 2 – 20 |
| Demo Valve Body Length | 60 mm | 25 – 140 |
| Demo Valve Body Width | 40 mm | 15 – 100 |
| Demo Valve Body Height | 25 mm | 10 – 60 |
| Bonnet Height | 20 mm | 5 – 50 |
| Handle Bar Height | 8 mm | 3 – 20 |
| Demo Bore Diameter | 12 mm | 4 – 30 |
| Relay Module PCB Length | 50 mm | 20 – 110 |
| Relay Module PCB Width | 26 mm | 12 – 60 |
| Relay PCB Thickness | 1.6 mm | 0.8 – 4 |
| Relay Body Length | 19 mm | 8 – 40 |
| Relay Body Width | 15 mm | 6 – 35 |
| Relay Body Height | 15 mm | 5 – 35 |
| Screw Terminal Width | 10 mm | 4 – 25 |
| Screw Terminal Height | 10 mm | 4 – 20 |
| 12 V Supply Length | 75 mm | 35 – 160 |
| 12 V Supply Width | 50 mm | 25 – 100 |
| 12 V Supply Height | 32 mm | 12 – 70 |
| DC Jack Stub Diameter | 8 mm | 3 – 16 |
| Buck Converter Length | 45 mm | 18 – 90 |
| Buck Converter Width | 20 mm | 10 – 50 |
| Buck PCB Thickness | 1.6 mm | 0.8 – 4 |
| Inductor Diameter | 10 mm | 4 – 20 |
| Inductor Height | 8 mm | 3 – 16 |
| Regulator IC Height | 3 mm | 1 – 8 |
| Demo Tube Outer Diameter | 40 mm | 16 – 90 |
| Demo Tube Wall Thickness | 3 mm | 1 – 8 |
| Demo Tube Length | 120 mm | 40 – 250 |
| End Flange Diameter | 56 mm | 20 – 120 |
| End Flange Thickness | 6 mm | 2 – 16 |
| Sampling Port Diameter | 12 mm | 5 – 26 |
| Sampling Port Height | 14 mm | 5 – 35 |
| Sampling Port Bore | 7 mm | 2 – 20 |
| Bracket Leg Length | 30 mm | 10 – 80 |
| Bracket Width | 20 mm | 8 – 60 |
| Bracket Thickness | 3 mm | 1 – 10 |
| Bracket Count | 2 mm | 1 – 6 |
| Bracket Standoff Diameter | 6 mm | 2 – 16 |
| Bracket Standoff Height | 10 mm | 2 – 30 |
| Bracket Spacing | 20 mm | 5 – 100 |
| Enclosure Length | 120 mm | 50 – 300 |
| Enclosure Width | 90 mm | 40 – 250 |
| Enclosure Height | 70 mm | 30 – 200 |
| Enclosure Wall Thickness | 3 mm | 1.5 – 8 |
| Vent Slot Width | 6 mm | 2 – 20 |
| Vent Slot Height | 3 mm | 1 – 12 |
| Display Window Length | 60 mm | 20 – 140 |
| Display Window Height | 24 mm | 8 – 60 |
| Indicator Hole Diameter | 5 mm | 2 – 12 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
More models
Browse the full gallery →Trumpet Lyre Mount Main Body
A single 3D mechanical CAD part for a trumpet music lyre mount (Main Body with Paddle). Geometry details: 1. A 18mm-wide semi-cylindrical clamp arc for a 28mm diameter cylinder, w
UAV Ogive Nose Cone
Design a watertight, 3D-printable aerodynamic nose cone module for a fixed-wing tactical UAV, optimized for printing in Carbon Fiber Filled PETG (PETG-CF). The base of the nose con
Flat-Strap Reel Spool
Create a 3D model of a custom flat-strap reel spool for a home plate housing cavity. Geometry: - A reel spool consisting of two parallel circular outer flanges connected by a cent
PET Recycling Kiosk Frame
Design a production-ready welded steel frame for an outdoor PET bottle recycling and animal feeding kiosk. Create ONLY the steel frame. Do not create covers, motors, tanks, electr
Kugoo G2 Pro Rear Swingarm for KuKirin G4
Create a detailed 1:1 CAD drawing of custom rear swingarms for the Kugoo G2 Pro 2020 electric scooter. The swingarms must be designed to fit a KuKirin G4 hub motor instead of the o
Humanoid Robot Exploded Assembly
Design a 3D CAD model of a fully autonomous humanoid biped robot for the Robofest AI HOMO BOT competition. Dimensions Height: 800 mm (80 cm) Maximum weight: 20 kg Lightweight modu