一种地热用垂直埋管换热器钻孔回填装置
By combining grouting pipe clamps with downhole drill rods for vertical buried heat exchanger drilling and backfilling devices, the problems of high construction costs, slow progress, and high blockage and collapse rates in ground source heat pump systems have been solved, achieving efficient and low-cost construction and optimized heat exchange effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ENERGY GREEN ENERGY TECH CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-17
AI Technical Summary
In existing ground source heat pump systems, the construction of vertical buried pipe heat exchangers suffers from problems such as high construction costs, slow construction progress, high rates of blockage and collapse, high rates of abandoned boreholes, and severe thermal bridging effects, which are difficult to effectively solve with existing technologies.
A drilling and backfilling device for a vertical buried pipe heat exchanger for geothermal use is adopted, including a backfill material tank, a grouting pump, a grouting hose, a water tap, a down-pipe drill rod, and a grouting pipe clamp. By combining the grouting pipe clamp with the down-pipe drill rod, the grouting pipe is mechanically lifted, avoiding entanglement and thermal bridging effects, reducing thermal resistance, and improving construction efficiency.
It reduced the rates of blockage and collapse, improved construction efficiency, reduced the rate of waste holes, avoided waste of grouting pipe materials, enhanced heat exchange efficiency, and shortened the construction period.
Smart Images
Figure CN224514244U_ABST
Abstract
Claims
1. A backfilling device for vertical buried pipe heat exchanger borehole of geothermal use, characterized in that, The equipment includes a backfill material tank, a grouting pump, a grouting hose, a water tap, a downhole drill rod, and a grouting pipe clamp. The grouting pump is mounted on the grouting hose, and the grouting hose is connected to the backfill material tank. The lower pipe drill rod has a grouting drill rod at its end, and the grouting drill rod is equipped with a grouting pipe clamp, which has a through hole matching the model of the U-shaped buried pipe heat exchanger.
2. The backfilling device for vertical buried pipe heat exchanger borehole of geothermal use according to claim 1, characterized in that, The longitudinal section of the grouting pipe clamp is conical, and the grouting drill rod passes through the circular hole at the center of the bottom of the grouting pipe clamp.
3. The backfilling device for vertical buried pipe heat exchanger borehole of geothermal use according to claim 2, characterized in that, A plug is provided below the grouting drill rod.
4. The backfilling device for geothermal vertical-buried-pipe heat exchanger boreholes according to claim 3, characterized in that, The grouting pipe includes a lower pipe plug, a grouting drill rod, a lower pipe drill rod, and a ground grouting hose connected to the lower pipe drill rod. A water tap is provided on the lower pipe drill rod.