一种吸水管真空气密性检测装置

Abstract

本实用新型公开一种吸水管真空气密性检测装置，包括快接组件、抽真空系统、柔性抽气管和控制系统，快接组件包括仿形法兰盘、锁紧卡箍、堵头和密封件，仿形法兰盘贴合吸水管端部法兰，锁紧卡箍固定仿形法兰盘和端部法兰，堵头一端固定于仿形法兰盘，另一端延伸到吸水管内，堵头开设有连通吸水管的通气孔和嵌设密封件的环形凹槽；抽真空系统包括真空泵、真空筒、硬连接管、控制阀和真空表；柔性抽气管连通硬连接管和吸水管，吸水管一侧设有安全阀，控制系统与抽真空系统信号连接。本实用新型通过设置快接组件和抽真空系统，可快速切换吸水管进行气密性全检，具有检测效率高，整体结构简单，投入成本低但操作便捷等优势，尤为适合装配现场的使用。

Claims

1. A water suction pipe vacuum air tightness testing device, characterized in that, The system includes quick-connect components, a vacuum system, a flexible suction pipe, and a control system. The quick-connect components are located at both ends of the suction pipe and seal the ends of the suction pipe. Each quick-connect component includes a conformal flange, a locking clamp, a plug, and a seal. The conformal flange fits snugly against the end flange of the suction pipe. The locking clamp is partially fixed to the conformal flange. In use, the locking clamp is sleeved on the outside of the connection between the conformal flange and the end flange. One end of the plug is fixed to the conformal flange, and the other end extends into the end of the suction pipe. The outer wall of the plug fits against the conformal flange and the inner wall of the suction pipe. A vent hole is provided on the plug, communicating with the inner cavity of the suction pipe. The plug has an annular groove corresponding to the connection between the conformal flange and the suction pipe. The sealing element is embedded in the annular groove. The vacuum system includes a vacuum pump, a vacuum cylinder, and a rigid connecting pipe connected in sequence. The rigid connecting pipe is integrally connected to the vacuum cylinder. The rigid connecting pipe is equipped with a control valve and a vacuum gauge. The vacuum gauge is located near the flexible suction pipe and is used to obtain the vacuum value P in the suction pipe. One end of the flexible suction pipe is sealed to the rigid connecting pipe, and the other end is equipped with a quick-connect vent. The quick-connect vent is connected to the vent on one side, and a sealed safety valve is connected to the vent on the other side. The control system is signal-connected to the vacuum system.

2. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: The sealing element is a dynamic sealing element, which is an inflatable sealing ring.

3. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: The locking clamp is provided with an elastic covering layer. When in use, the elastic covering layer seals the connection gap between the conformal flange and the end flange.

4. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: The contact surface between the conformal flange and the end flange is provided with a sealing groove, and a self-compensating sealing ring is provided in the sealing groove. The self-compensating sealing ring has an X-shaped double lip structure in cross-section.

5. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: A vacuum pressure sensor is provided on the inner side of the plug near the suction pipe. The vacuum pressure sensor is used to obtain the pressure rise rate ΔP / Δt in the suction pipe. The control system receives and processes the measurement data of the vacuum pressure sensor and the vacuum gauge, and determines the vacuum tightness of the suction pipe according to the threshold.

6. The water pipe vacuum air tightness testing device of claim 5, wherein: The control system is connected to an audible and visual alarm device, which provides audible and visual indications based on the judgment result of the control system.

7. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: The vacuum cylinder is connected to multiple rigid connecting pipes, each of which is equipped with a control valve and a vacuum gauge, and the end of each rigid connecting pipe is sealed with the flexible suction pipe.

8. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: It also includes a mobile trolley, on which the vacuum system and control system are fixedly mounted. The mobile trolley is also equipped with a material tray for placing the flexible vacuum tube and quick-connect assembly.

9. The water suction pipe vacuum air tightness detection device according to claim 1, characterized in that: The positive pressure leak detection system for detecting the leakage point of the water suction pipe with unqualified vacuum air tightness comprises an air compressor, a flexible inflation pipe and a leak detector.

10. The water pipe vacuum air tightness testing device of claim 9, wherein: The safety valve connected with the air vent is a positive and negative pressure composite safety valve.

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