Unlock instant, AI-driven research and patent intelligence for your innovation.

Ground source heat pump vertical buried pipe raw stock natural backflow filling method

A ground source heat pump, natural technology, applied in excavation, construction, infrastructure engineering, etc., can solve the problems of poor heat exchange effect and incompact backfill, and achieve good heat exchange effect, compact backfill, and improve heat exchange effect. Effect

Active Publication Date: 2015-12-02
NO 4 ENG CO LTD OF CHINA RAILWAY 11 BUREAU GRP +1
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems existing in the prior art that the backfill is not dense and the heat exchange effect is not good, and to provide a ground source heat pump vertical buried pipe raw pulp natural backfilling method with dense backfill and good heat exchange effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A ground source heat pump vertically buried pipe raw slurry natural backflow filling method, including the following steps in sequence:

[0035] Step 1. Set up a mud pit near the No. 1 vertical buried hole and the No. 1 connection groove connecting the mud pit with the No. 1 vertical buried hole, and place a drilling mud circulation pump in the mud pit;

[0036] Step 2. After the pipe is lowered in the No. 1 vertical buried hole, first use the drilling mud circulation pump to return the slurry to the bottom of the No. 1 vertical buried hole, and then open the No. 1 vertical buried hole and the No. 2 vertical buried hole The No. 2 connecting groove at the opening place, and then open the No. 2 vertical buried hole at the opening place of the No. 2 vertical buried hole. At this time, the drilling raw slurry overflowed during the opening of the No. 2 vertical buried hole passes through the No. The buried hole and the No. 1 connecting groove flow to the mud pit, and begin t...

Embodiment 2

[0041] Step is with embodiment 1, and difference is:

[0042] In said step 2 and step 3, the mud specific gravity of the drilling raw slurry is 1.4, and the natural sedimentation time is 20 days.

Embodiment 3

[0044] Step is with embodiment 1, and difference is:

[0045]In said step 2 and step 3, the mud specific gravity of the drilling raw slurry is 1.2, and the natural sedimentation time is 6 days.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a ground source heat pump vertical buried pipe raw stock natural backflow filling method. A connecting groove is arranged between two adjacent vertical buried holes. Drill raw stock overflowing when a certain vertical buried hole is drilled can flow to other vertical buried holes which complete hole bottom returned stock backfilling through the connecting groove, and begins plain sedimentation. Finally, the hole mouths of the vertical buried holes which complete plain sedimentation are sealed and plugged by yellow sand. The method is dense in backfill and good in heat exchanging, and time limit for a project would not be influenced.

Description

technical field [0001] The invention belongs to the technical field of buried pipes of ground source heat pump systems, and in particular relates to a natural backflow filling method of raw slurry in vertically buried pipes of ground source heat pumps, which is suitable for ground burial of ground source heat pumps with clay, sandstone and other soils and soft rocks. Pipe construction, especially suitable for the construction of ground source heat pump buried pipe engineering for large station buildings with high heat loss requirements. Background technique [0002] The ground source heat pump utilizes the characteristics of underground shallow geothermal resources that can both heat and cool. By inputting a small amount of high-grade energy (electric energy), the energy can be transferred from low-temperature heat sources to high-temperature heat sources. The heat is "taken" out and supplied to the room for heating after raising the temperature; in summer, the heat in the r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E02D17/12
Inventor 刘素云施忠原
Owner NO 4 ENG CO LTD OF CHINA RAILWAY 11 BUREAU GRP