Circumferential weld air leakage detection device and detection method compatible with liners with multiple specifications

A girth weld and multi-specification technology, which is applied in the field of air tightness detection of water heater inner tanks, can solve problems such as complicated girth weld detection devices, poor vertical alignment, and long time for model change, and achieves convenient replacement of spare parts and convenient maintenance Maintenance, simple and compact structure

Pending Publication Date: 2019-07-16
BOYI TIANJIN PNEUMATIC TECH INST
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Problems solved by technology

However, due to the dimensional deviation in the manufacturing process of the liner, the vertical alignment of this method is poor
Moreover, the girth w

Method used

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  • Circumferential weld air leakage detection device and detection method compatible with liners with multiple specifications
  • Circumferential weld air leakage detection device and detection method compatible with liners with multiple specifications
  • Circumferential weld air leakage detection device and detection method compatible with liners with multiple specifications

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

[0036] In the description of the present invention, it should be noted that unless otherwise specified and limited...

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Abstract

The invention provides a circumferential weld air leakage detection device and detection method compatible with liners with multiple specifications. The device comprises two longitudinal moving mechanisms and a horizontal alignment mechanism capable of driving the two longitudinal moving mechanisms to move close to or far away from each other in a horizontal direction; each longitudinal moving mechanism is responsible for detecting a circumferential weld, and comprises a clamping unit of a scissor structure, lower clamping arms of two clamping arms of the clamping unit are arc-shaped, and thelower end of each lower clamping arm is hinged with a detection cover box; the detection cover box is communicated with a leakage detector via a suction gun pipeline. Compared with the prior art, thedevice can be compatible with circumferential weld detection of liners with multiple specifications, and achieves the flexible requirement design. Meanwhile, the device is simple and compact in structure, avoids the utilization of complex transmission mechanisms, and effectively reduces the detection errors. In addition, the structure is economical and reliable, the repair and maintenance of the equipment and the change of replacement parts are greatly facilitated, and the development of the water heater liner air leakage detection industry is further promoted.

Description

technical field [0001] The invention belongs to the technical field of air-tightness detection of inner tanks of water heaters, and relates to an air-tight leak detection device and a detection method for girth welds compatible with multi-standard inner tanks. Background technique [0002] The inner tank is the core component of the water heater, and its airtightness directly determines the service life of the water heater. like figure 1 As shown, the inner tank of the water heater is generally composed of a cylinder body, two end caps and nuts, and is formed by welding. Therefore, the leak detection of the inner tank of the water heater is mainly concentrated at each weld. How to quickly and accurately complete the airtight detection of each weld seam has always been a key technology in the field of water heater liner leak detection. [0003] Common leak detection methods for water heater inner tanks include visual bubble method, direct pressure test method, differential ...

Claims

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Application Information

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IPC IPC(8): G01M3/04
CPCG01M3/04
Inventor 李豪窦洪武武广美
Owner BOYI TIANJIN PNEUMATIC TECH INST
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