CN211576438U - Device for measuring detonation pressure in blast hole by utilizing manganin piezoresistive sensing strain gauge - Google Patents
Device for measuring detonation pressure in blast hole by utilizing manganin piezoresistive sensing strain gauge Download PDFInfo
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- CN211576438U CN211576438U CN201922059015.6U CN201922059015U CN211576438U CN 211576438 U CN211576438 U CN 211576438U CN 201922059015 U CN201922059015 U CN 201922059015U CN 211576438 U CN211576438 U CN 211576438U
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- strain gauge
- manganin
- piezoresistive sensing
- detonation pressure
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Abstract
A device for measuring the detonation pressure in a blast hole by utilizing a manganin piezoresistive sensing strain gauge is suitable for the field of engineering blasting and mainly applied to measuring the detonation pressure in the blasting process. The device comprises a pressed steel column, a steel tank for accommodating the pressed steel column and a manganin piezoresistive sensing strain gauge, the manganin piezoresistive sensing strain gauge, a steel pipe for protecting a lead, an external strain gauge lead and a storage recorder. Utilize this device to realize when implementing the blasting, the manganin pressure drag sensing foil gage of gathering pressure can not receive the shock wave that the explosion produced immediately and lead to the foil gage to damage, but the detonation pressure is through acting on the pressurized steel post, and then presses manganin pressure drag sensing foil gage to gather the detonation pressure data. The method plays a positive role in accurately evaluating the explosive energy release and the explosive working capacity.
Description
Technical Field
The utility model relates to an utilize manganin pressure drag sensing foil gage to survey device of blast hole detonation pressure is applicable to engineering blasting field, mainly is applied to the blasting in-process and surveys the detonation pressure.
Background
In the field of engineering blasting, the detonation pressure is taken as a main performance parameter of the explosive, is one of basic signs for evaluating the energy release and work-doing capability of the explosive, and the determination of the detonation pressure is always a very important problem in the research of explosion mechanics. When the conventional pressure measuring method is adopted to measure the detonation pressure of an actual blast hole, the destructive force generated by the detonation destroys the pressure measuring device, so that data cannot be collected, and the detonation temperature cannot be effectively collected. Therefore, a device capable of ensuring that the detonation pressure data can be transmitted out in the moment of detonation in the blast hole and the sensor is not damaged is needed.
SUMMERY OF THE UTILITY MODEL
The detonation pressure that exists is difficult to the measuring problem in the field of blasting to current engineering, the utility model provides an utilize manganin pressure drag sensing foil gage to survey the device of downthehole detonation pressure of big gun, can gather rapidly and spread the true detonation pressure that the explosive explosion produced from this to provide convenient for estimating explosive explosion power.
The technical scheme of the utility model: the utility model provides an utilize manganin piezoresistance sensing foil gage to survey device of blast hole internal burst pressure, includes pressurized steel post (1), holds steel tank (2) of pressurized steel post and manganin piezoresistance sensing foil gage, manganin piezoresistance sensing foil gage (3), steel pipe (4) of protection wire, external foil gage wire (5) and memory record ware (6). The compression steel column (1) is made of high-quality carbon structural steel, the diameter of the upper portion of the compression steel column is 45mm, the thickness of the compression steel column is 3mm, the compression steel column is used for bearing the damage of explosion shock waves, and the diameter of the lower portion of the compression steel column is 35mm, and the height of the compression steel column is 55 mm. The outer diameter of the steel tank (2) accommodating the pressed steel column and the manganin piezoresistive sensing strain gauge is 50mm, the inner diameter is 40mm, the height of the outer part is 50mm, and the thickness of the bottom of the steel tank is 5 mm. The manganin piezoresistive sensing strain gauge is placed in the center of the bottom of a steel tank body (2) containing a pressed steel column and the manganin piezoresistive sensing strain gauge, and a leg wire of the manganin piezoresistive sensing strain gauge (3) penetrates out of a hole in the lower part of the steel tank (3) containing the pressed steel column and the manganin piezoresistive sensing strain gauge so as to be connected with an external strain gauge wire (5). And then the pressed steel column (1) is placed into a steel tank (2) containing the pressed steel column and the manganin piezoresistive sensing strain gauge and just pressed right above the manganin piezoresistive sensing strain gauge (3). An external strain gauge lead (5) is connected with the manganin piezoresistive sensing strain gauge (3), and the external strain gauge lead (5) penetrates through a steel pipe (4) of a protection lead to be connected to a storage recorder (6) to collect the explosion pressure. After the explosive explodes, detonation pressure of detonation pressure acts on the pressed steel column (1) and then acts on the manganin piezoresistive sensing strain gauge (3), and the storage recorder (6) records collected data. The steel tank (2) containing the pressed steel column and the manganin piezoresistive sensing strain gauge guarantees that the manganin piezoresistive sensing strain gauge (3) cannot be damaged, the shock wave generated by the explosive is towards the pressed steel column (1), and the pressure applied to the pressed steel column (1) uniformly acts on the manganin piezoresistive sensing strain gauge (3), so that the accuracy of measured data is guaranteed. The steel pipe (4) for protecting the wire protects the external strain gage wire (5) from being damaged by impact force generated by explosion, and transmission of collected data is guaranteed.
The utility model has the advantages that:
use this set device to gather detonation pressure when engineering blasting field construction, in the twinkling of an eye gathering the transmission, because the protection of pressurized steel column and steel pipe, manganese copper pressure drag sensing foil gage and external foil gage wire can not be because of the shock wave destruction that the explosion produced, can also effectively spread the pressure data of gathering rapidly, have guaranteed that the collection signal is not destroyed. The utility model discloses it is simple portable, the installation is simple, convenient operation, can extensively use in engineering blasting field.
Drawings
FIG. 1 is a steel tank containing a steel column under pressure and a manganin piezoresistive sensing strain gauge;
FIG. 2 is a front view of an apparatus for measuring detonation pressure in a borehole using a manganin piezoresistive sensing strain gauge;
in the figure: 1-a pressed steel column, 2-a steel tank for accommodating the pressed steel column and a manganin piezoresistive sensing strain gauge, 3-the manganin piezoresistive sensing strain gauge, 4-a steel pipe for protecting a lead, 5-an external strain gauge lead and 6-a storage recorder.
Detailed Description
The invention will be further described with reference to the following drawings and specific examples:
the utility model relates to an utilize manganin pressure drag sensing foil gage to survey device of blast hole internal burst pressure. The utility model discloses the size of a dimension is applicable to the big gun hole that the diameter is 50mm, can revise the size of this device according to the big gun hole in different apertures. The device consists of a pressed steel column (1), a steel tank (2) for accommodating the pressed steel column and a manganin piezoresistive sensing strain gauge, the manganin piezoresistive sensing strain gauge (3), a steel pipe (4) for protecting a lead, an external strain gauge lead (5) and a storage recorder (6). The method comprises the following specific steps:
the method comprises the following steps: the manganin piezoresistive sensing strain gauge (3) is placed in the center of the bottom of a steel tank (2) containing a lead column and the manganin piezoresistive sensing strain gauge, a leg wire of the manganin piezoresistive sensing strain gauge (3) penetrates out from a small opening in the bottom of the tank, and the compressed steel column (1) is connected by strong glue and placed in the tank. And connecting the external strain gauge lead (5) with the leg wire penetrating out of the tank body and the external strain gauge lead (5).
Step two: and (3) putting the assembled device at the bottom of the blast hole, and inserting a steel pipe (4) for protecting the wire to the bottom of the blast hole through an external strain gage wire (5) so as to protect the wire. Then normal charging and placing into the priming detonator are carried out. Blocking the orifice connecting line and the like. Wherein the height of the steel pipe (4) for protecting the wire should be below the sealing mud of the blast hole. The steel pipe can not be broken and fly out due to impact generated by explosion operation, so that damage accidents are avoided.
Step three: and connecting the external strain gauge lead (5) with a storage recorder (6). And (5) waiting for detonation, and finishing blasting in the blast hole and collecting the detonation pressure.
Claims (1)
1. The utility model provides an utilize manganin piezoresistive sensing foil gage to survey device of blast hole internal detonation pressure, mainly includes the pressurized steel column, holds the steel jar, the manganin piezoresistive sensing foil gage of pressurized steel column and manganin piezoresistive sensing foil gage, the steel pipe of protection wire, external foil gage wire and storage record appearance, characterized by: the steel tank of the manganin piezoresistive sensing strain gauge and the compressed steel column directly bear detonation pressure and indirectly compress the manganin piezoresistive sensing strain gauge are protected, the bottom of the blast hole is placed after equipment is assembled, and then the blast hole is networked with a storage recorder after being filled, so that the collection of detonation pressure data is waited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922059015.6U CN211576438U (en) | 2019-11-26 | 2019-11-26 | Device for measuring detonation pressure in blast hole by utilizing manganin piezoresistive sensing strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922059015.6U CN211576438U (en) | 2019-11-26 | 2019-11-26 | Device for measuring detonation pressure in blast hole by utilizing manganin piezoresistive sensing strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211576438U true CN211576438U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922059015.6U Active CN211576438U (en) | 2019-11-26 | 2019-11-26 | Device for measuring detonation pressure in blast hole by utilizing manganin piezoresistive sensing strain gauge |
Country Status (1)
| Country | Link |
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| CN (1) | CN211576438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632499A (en) * | 2018-11-15 | 2019-04-16 | 北京北机机电工业有限责任公司 | A kind of lid burst pressure detection device |
| CN113030428A (en) * | 2021-03-11 | 2021-06-25 | 中国人民解放军63921部队 | Device and system for measuring energy release capacity of energetic material |
-
2019
- 2019-11-26 CN CN201922059015.6U patent/CN211576438U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632499A (en) * | 2018-11-15 | 2019-04-16 | 北京北机机电工业有限责任公司 | A kind of lid burst pressure detection device |
| CN113030428A (en) * | 2021-03-11 | 2021-06-25 | 中国人民解放军63921部队 | Device and system for measuring energy release capacity of energetic material |
| CN113030428B (en) * | 2021-03-11 | 2023-06-13 | 中国人民解放军63921部队 | Device and system for measuring energy release capacity of energetic material |
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