供热管网弯头负压波波速修正卡尺
By designing a caliper for correcting the negative pressure wave velocity at elbows in heating pipe networks, and employing a main scale, vernier slider, and telescopic rod structure, combined with rare earth magnetic plates and positioning feet, the problem of cumbersome and time-consuming operation in traditional methods is solved. This enables rapid and accurate measurement of the correction coefficient for negative pressure wave velocity at elbows, improving leakage location efficiency and operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI CLEAN ENERGY RES INST OF TSINGHUA UNIV
- Filing Date
- 2025-10-14
- Publication Date
- 2026-07-17
AI Technical Summary
The determination of the negative pressure wave velocity correction coefficient of elbows in traditional heating pipe networks relies on offline CFD modeling and post-processing analysis, which is cumbersome and time-consuming. It cannot quickly provide elbow coefficients in complex environments or without power, resulting in delayed leak location and low repair efficiency.
The design incorporates a main scale, vernier slider, and telescopic rod structure for correcting the negative pressure wave velocity at elbows in heating pipe networks. Combined with rare-earth magnetic plates and positioning feet, it enables rapid reading of the elbow negative pressure wave velocity correction coefficient k, simplifying the operation process and making it suitable for complex environments and conditions without power supply.
It enables rapid and accurate measurement of the wave velocity correction coefficient k of the elbow negative pressure wave within tens of seconds, improving leakage location efficiency, measurement efficiency and operational safety, and is suitable for complex working conditions and environments without power supply.
Smart Images
Figure CN224517569U_ABST
Abstract
Claims
1. A caliper for correcting the wave speed of negative pressure wave in the elbow of heating pipe network, comprising a main scale (1), a vernier slide block (2) and an extension rod, characterized in that, The main ruler (1) is fixedly connected to one end of the telescopic rod. The telescopic rod consists of an outer tube (4) and two inner tubes (5). The inner tube (5) is provided with a support tube (12). There are multiple annularly distributed connecting blocks (13) between the inner tube (5) and the support tube (12). Several equidistant positioning holes (11) are opened on the outer walls of the outer tube (4) and the two inner tubes (5). The positioning hole (11) is a hemispherical structure. The connecting block (13) on the same side as the positioning hole (11) is provided with an installation groove. The installation groove is provided with a limiting spring (14). The end of the limiting spring (14) away from the installation groove is fixedly connected with a positioning bead (8). The positioning bead (8) is used in conjunction with the positioning hole (11).
2. The heat supply network elbow negative pressure wave wave speed correction caliper according to claim 1, characterised in that, Positioning feet (6) are provided on the outer wall of the outer tube (4) and near one end of the two inner tubes (5). Two rare earth magnetic sheets (7) are embedded at the bottom of the positioning feet (6).
3. The heat supply network elbow negative pressure wave wave speed correction caliper according to claim 2, characterised in that, The inner wall thickness of the outer tube (4) is greater than the inner wall thickness of the inner tube (5).
4. The heat supply network elbow negative pressure wave wave speed correction caliper according to claim 3, characterised in that, The bottom of the positioning foot (6) is a double-arc concentric composite curved surface structure, with a first edge and a second edge between the two arc surfaces, and both the first edge and the second edge are blunted.
5. The heat supply network elbow negative pressure wave wave speed correction caliper according to claim 1, characterised in that, The main scale (1) has a dovetail groove (3), the vernier slider (2) is slidably connected to the dovetail groove (3), and spring plates (10) are symmetrically distributed on both sides of the vernier slider (2). The other end of the spring plate (10) freely contacts the inner wall of the dovetail groove (3).
6. The heat supply network elbow negative pressure wave wave speed correction caliper according to claim 5, characterised in that, A k-value window (9) is provided on one outer wall of the vernier slider (2). The four corners of the k-value window (9) are rounded. The horizontal length of the k-value window (9) completely covers the scale area on the vernier slider (2).
7. The heat supply network elbow negative pressure wave wave speed correction caliper according to claim 1, characterised in that, The scale lines on the main scale (1) and the vernier slider (2) are laser-etched and filled with black UV-cured ink.