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Portable multifunctional biological impactor and method for obtaining impact energy based on the impactor

A multi-functional and portable technology, applied in the testing of machines/structural components, measuring devices, impact testing, etc., can solve the problems of inability to realize portability, single function, complex structure, etc., and achieve light weight, fast response and simple structure Effect

Inactive Publication Date: 2015-08-19
THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the existing structure are as follows: the structure is too complicated, and because it needs to be equipped with an air pump, it is heavy and cannot be portable
[0004] In addition, the existing biological impactor has a single function and can only meet the impact speed requirements, and various impact acceleration loads are also required in biological impact experiments to simulate aircraft seat ejection and high-speed collisions, etc. The existing structure cannot meet this function Require

Method used

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  • Portable multifunctional biological impactor and method for obtaining impact energy based on the impactor
  • Portable multifunctional biological impactor and method for obtaining impact energy based on the impactor
  • Portable multifunctional biological impactor and method for obtaining impact energy based on the impactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] When injecting methane into cylinder 1:

[0063] methane burning CH 4 +2O 2 =2H 2 O (gaseous) + CO 2

[0064] According to the constant volume-adiabatic equation, from the formula (5), there are:

[0065] h P +P R V=H R +P R V

[0066] h P =H R +(V P -V R ) P=H R +(n P -n R ) R m T

[0067] no P and n R is the kilomoles of gaseous substance, R m is the universal gaseous constant.

[0068] When H 2 When O exists in gaseous state, n R =n P , then H P =H R .

[0069] The chemical equation for the combustion of methane is:

[0070] h R =(H CH4 ) 298 =(h 0 f )CH 4

[0071] Looking up the table, the enthalpy of formation of methane is

[0072] (h 0 f )CH 4 =-75850kJ / kmol

[0073] Then the enthalpy of the reactants is

[0074] h R =-75850kJ / kmol

[0075] According to the chemical reaction equation:

[0076] h P =2(h 0 f +△h) H2O +(h 0 f +△h) CO2 (a)

[0077] Check the table to get CO 2 and H 2 The enthalpy of formation o...

Embodiment 2

[0099] When injecting propane into cylinder 1:

[0100] Propane burning C3 h 8 +5O 2 =4H 2 O (gaseous) +3CO 2

[0101] According to the constant volume-adiabatic equation, from the formula (5), there are:

[0102] h P +P R V=H R +P R V

[0103] h P =H R +(V P -V R ) P=H R +(n P -n R ) R m T

[0104] no P and n R is the kilomoles of gaseous substance, R m It is the universal gas state constant, 8.37kJ / kmol.K.

[0105] When H 2 When O exists in gaseous state, 1+n R =n P , then H P =R m T+H R .

[0106] Looking up the table, the enthalpy of formation of propane is

[0107] (h 0 f )C 3 h 8 =-104000kJ / kmol

[0108] Then the enthalpy of the reactants is

[0109] h R =R m T-104000=8.37×293-104000=-101506kJ / kmol

[0110] According to the chemical reaction equation:

[0111] h P =4(h 0 f +△h) H2O +3 (h 0 f +△h) CO2 (b)

[0112] Check the table to get CO 2 and H 2 The enthalpy of formation of O is:

[0113] (h 0 f ) H2O =-393520kJ / ...

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Abstract

The invention discloses a portable multifunctional biology impacting machine. Two ports of a cylinder body are sealed by a corresponding left sealing plate and a corresponding right sealing plate respectively, an air inlet, a pressure relief opening and an igniting opening are formed in the left sealing plate, wherein the air inlet, the pressure relief opening and the igniting opening are communicated with the inner cavity of the cylinder body, the external portion of the air inlet is connected with an air-intake line, the pressure relief opening can be sealed through a closing pressing device, and an igniting device is mounted in the igniting opening. A piston is mounted in the cylinder body, and the right end of a piston rod stretches out of the cylinder body. According to the portable multifunctional biology impacting machine, the piston is pushed to move through the pressure generated by combustion of combustible gas, and the portable multifunctional biology impacting machine has essential difference with a traditional structure that compressed air is controlled through a solenoid valve to push a primary hammer to strike a secondary hammer, a ponderous air pump is not needed, and therefore, the portable multifunctional biology impacting machine is simple and compact in structure, fast in response speed and easy to carry, enables acceleration curves to be selected according to needs, has the function of one machine tow purposes, has creativity and good practicality, and can further obtain impacting energy based on biology impacting.

Description

technical field [0001] The invention belongs to the field of biological impactors, and in particular relates to a portable multifunctional biological impactor. Background technique [0002] Biological impactor is a commonly used impact experiment equipment, which is used to obtain impact energy. Existing biological impactors mostly use a solenoid valve to drive the primary hammer to strike the secondary hammer through high-pressure gas, so that the secondary hammer moves quickly to obtain impact energy. [0003] The disadvantages of the existing structure are as follows: the structure is too complicated, and because it needs to be equipped with an air pump, it is heavy and cannot be portable. [0004] In addition, the existing biological impactor has a single function and can only meet the impact speed requirements, and various impact acceleration loads are also required in biological impact experiments to simulate aircraft seat ejection and high-speed collisions, etc. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/08
Inventor 赵辉尹志勇宁心李晓炎杨光瑜赖西南王正国
Owner THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA