CN105424546A - Concentration measuring device of fire extinguishing agent concentration measuring system - Google Patents
Concentration measuring device of fire extinguishing agent concentration measuring system Download PDFInfo
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- CN105424546A CN105424546A CN201510744993.8A CN201510744993A CN105424546A CN 105424546 A CN105424546 A CN 105424546A CN 201510744993 A CN201510744993 A CN 201510744993A CN 105424546 A CN105424546 A CN 105424546A
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- hole
- pressure measurement
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- heat block
- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
- G01N7/16—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference by heating the material
Abstract
The invention relates to the design of a fire extinguishing agent concentration measuring system, in particular to a concentration measuring device of a fire extinguishing agent concentration measuring system. The problems that an existing concentration measuring device is complex in structure and low in measuring precision and cannot measure the fire extinguishing agent concentration on line in real time are solved. The concentration measuring device of the fire extinguishing agent concentration measuring system is used for measuring the concentration of a preset measuring point on an engine compartment and comprises a heating block, a pressure measuring block, a first end cover, a second end cover, a first pressure measuring nozzle, a second pressure measuring nozzle, a pressure difference sensor and a heating piece. In the concentration measuring device of the fire extinguishing agent concentration measuring system, airflow flows into the preset measuring point on the engine compartment can be heated in a first through hole in the heating block, the heated airflow enters a second through hole in the pressure measuring block, the pressure difference of the two ends of the second through hole is detected through the pressure difference sensor, and finally the fire extinguishing agent concentration of measured gas is obtained. Due to the fact that the structure is simple and operation is convenient, the measuring precision can be effectively improved.
Description
Technical field
The present invention relates to agent concentration design of measuring system, the apparatus for measuring concentration of a kind of agent concentration measuring system of special design;
Background technology
According to the fire extinguishing system testing requirements of aircraft power cabin, need during test to adopt the multiple measurement points of special agent concentration measuring system to piggyback pod to carry out the Measurement accuracy of agent concentration, to determine the extinguishing effect of fire extinguishing system.When the air-flow (mixed gas of air or air and fire extinguishing agent) that in piggyback pod, corresponding measurement point flows out flows through in special agent concentration measuring system, apparatus for measuring concentration in measuring system can detect pressure change (pressure reduction) of the air-flow flow through in the given time, then determines the agent concentration of piggyback pod measurement point according to pressure change.But, in current agent concentration measuring system, in order to obtain the effective change value of pressure of air-flow, apparatus for measuring concentration measuring accuracy is low, real-time is difficult to meet testing requirements, complex structure causes operating validity and the accuracy that the factors such as inconvenience directly affect test figure.
Summary of the invention
Object of the present invention provides a kind of apparatus for measuring concentration of agent concentration measuring system, and to solve, existing apparatus for measuring concentration complex structure, measuring accuracy are low, the problem of On-line sampling system agent concentration.
An apparatus for measuring concentration for agent concentration measuring system, for measuring the concentration of scheduled measurement point on piggyback pod, it is characterized in that, described apparatus for measuring concentration comprises:
Heat block, comprises inlet end, endpiece and the first through hole, and the entrance of described first through hole is positioned on the inlet end end face of described heat block, and the outlet of described first through hole is positioned on the endpiece end face of described heat block;
Pressure measurement block, comprise inlet end, endpiece and the second through hole, the entrance of described second through hole is positioned on the inlet end end face of described pressure measurement block, the outlet of described second through hole is positioned on the endpiece end face of described pressure measurement block, the inlet end of described pressure measurement block is connected with the endpiece of described heat block, and described first through hole and described second through hole are tightly connected;
First end cap, sealing arranges the inlet end of described heat block, and described first end covers the first opening had for being communicated with the scheduled measurement point of described piggyback pod by described first through hole;
Second end cap, sealing arranges the endpiece of described pressure measurement block, described second end cap has the second opening for being communicated with vacuum pump by described second through hole;
First pressure measurement mouth, is arranged on the porch of described second through hole;
Second pressure measurement mouth, is arranged on the exit of described second through hole;
Differential pressure pickup, is connected with described first pressure measurement mouth and described second pressure measurement mouth respectively, for detecting the pressure reduction between described first pressure measurement mouth and described second pressure measurement mouth;
Heating member, for being heated to predetermined temperature by described heat block and described pressure measurement block.
Optionally, described first through hole in described heat block comprises multiple, and is uniformly distributed.
Optionally, described heat block along perpendicular to the rectangular in cross-section of described first through hole airflow direction, described first through hole is straight hole, and the distance between any two described first through holes is equal.
Optionally, described second through hole in described pressure measurement block comprises multiple, and is uniformly distributed.
Optionally, described pressure measurement block along perpendicular to the rectangular in cross-section of described second through hole airflow direction, and identical with the cross-sectional sizes of described heat block, described second through hole is straight hole, and the distance between any two described second through holes is equal.
Optionally, the inlet end of described heat block and the junction of described first end cap are formed with the first pressure stabilizing cavity, and the entrance of multiple described first through hole and the first opening of described first end cap are all communicated with described first pressure stabilizing cavity;
The inlet end of described pressure measurement block and the endpiece junction of described heat block are formed with the second pressure stabilizing cavity, and the outlet of multiple described first through hole and the entrance of multiple described second through hole are all communicated with described second pressure stabilizing cavity;
The endpiece of described pressure measurement block and the junction of described second end cap are formed with the 3rd pressure stabilizing cavity, and the outlet of multiple described second through hole and the second opening of described second end cap are all communicated with described 3rd pressure stabilizing cavity.
Optionally, the inlet end of described heat block has groove, for forming described first pressure stabilizing cavity with described first end cap;
The inlet end of described pressure measurement block has groove, for forming described second pressure stabilizing cavity with the endpiece of described heat block;
Described second end cap has groove, for forming described 3rd pressure stabilizing cavity with the endpiece of described pressure measurement block.
Optionally, position corresponding on described first end cap, described second end cap, described heat block and described pressure measurement block, multiple fixed orifice is offered, for described first end cap, described second end cap, described heat block and described pressure measurement block being fixed by bolt along the axis direction being parallel to described first through hole;
It is peripheral that multiple described fixed orifice on described heat block is evenly distributed on described first through hole, and it is peripheral that the multiple described fixed orifice on described pressure measurement block is evenly distributed on described second through hole.
Optionally, described heating member comprises:
Heating plate, the described heat block be connected described in being arranged on and described pressure measurement block periphery, for controllably heating described heat block and described pressure measurement block;
Temperature control module, for controlling described heating plate;
Temperature sensor, for detecting the real time temperature of described heat block and described pressure measurement block.
Optionally, the apparatus for measuring concentration of described agent concentration measuring system also comprises:
Volume control device, between the second opening being arranged on described second end cap and described vacuum pump, for controlling the uninterrupted of whole described apparatus for measuring concentration.
Invention effect:
In the apparatus for measuring concentration of agent concentration measuring system of the present invention, the air-flow that piggyback pod flows in scheduled measurement point can heat in the first through hole of heat block, air-flow after heating enters in the second through hole of pressure measurement block again, the pressure reduction at the second through hole two ends is detected again by differential pressure pickup, the agent concentration of the tested gas of final acquisition, because structure is simple, easy to operate, effectively can improve measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the apparatus for measuring concentration of agent concentration measuring system of the present invention
Fig. 2 is the cut-open view (broken section) of the apparatus for measuring concentration of agent concentration measuring system of the present invention;
Fig. 3 is the stereographic map of the heat block of the apparatus for measuring concentration of agent concentration measuring system of the present invention;
Fig. 4 is the cut-open view of the heat block of the apparatus for measuring concentration of agent concentration measuring system of the present invention;
The stereographic map of the pressure measurement block of the apparatus for measuring concentration of Fig. 5 agent concentration measuring system of the present invention;
The cut-open view of the pressure measurement block of the apparatus for measuring concentration of Fig. 6 agent concentration measuring system of the present invention.
Embodiment
As shown in Figures 1 to 6, the invention provides a kind of apparatus for measuring concentration of agent concentration measuring system, for measuring the concentration of scheduled measurement point (multiple) on piggyback pod; Apparatus for measuring concentration comprises the parts such as heat block 1, pressure measurement block 2, first end cap 3, second end cap 4, first pressure measurement mouth 5, second pressure measurement mouth 6, differential pressure pickup and heating member.
The entrance that heat block 1 comprises inlet end, endpiece and the first through hole 11, first through hole 11 is positioned on the inlet end end face of heat block 1, and the outlet of the first through hole 11 is positioned on the endpiece end face of heat block 1.
Pressure measurement block 2 comprises inlet end, endpiece and the second through hole 21, the entrance of the second through hole 21 is positioned on the inlet end end face of pressure measurement block 2, the outlet of the second through hole 21 is positioned on the endpiece end face of pressure measurement block 2, the inlet end of pressure measurement block 2 is connected with the endpiece of heat block 1, and the first through hole 11 and the second through hole 21 are tightly connected.
First end cap 3 sealing arranges the inlet end of heat block 1, the first end cap 3 has the first opening for the first through hole 11 to be communicated with (passing through pipeline) with the scheduled measurement point of piggyback pod.
Second end cap 4 sealing arranges the endpiece of pressure measurement block 2, the second end cap 4 has the second opening for being communicated with vacuum pump by the second through hole 21.
First pressure measurement mouth 5 is arranged on the porch of the second through hole 21, and the force value for the porch to the second through hole 21 is measured; Second pressure measurement mouth 6 is arranged on the exit of the second through hole 21, and the force value for the exit to the second through hole 21 is measured.In addition, the gas flow in heat block 1 after heating is after the second through hole 21 of pressure measurement block 2, and its pressure there will be certain decline, and therefore the stream pressure at the first pressure measurement mouth 5 place is greater than the stream pressure at the second pressure measurement mouth 6 place.
Differential pressure pickup is connected with the first pressure measurement mouth 5 and the second pressure measurement mouth 6 respectively, for detecting the pressure reduction between described first pressure measurement mouth 5 and described second pressure measurement mouth 6, then through converting, can obtain the agent concentration of tested gas.
It is peripheral with pressure measurement block 2 that heating member is arranged on heat block 1, for heat block 1 and pressure measurement block 2 are heated to predetermined temperature.
In the apparatus for measuring concentration of agent concentration measuring system of the present invention, the air-flow that piggyback pod flows in scheduled measurement point can heat in the first through hole 11 of heat block 1, air-flow after heating enters in the second through hole 21 of pressure measurement block 2 again, the pressure reduction at the second through hole 21 two ends is detected again by differential pressure pickup, the agent concentration of the tested gas of final acquisition, because structure is simple, easy to operate, effectively can improve measuring accuracy.
In the apparatus for measuring concentration of agent concentration measuring system of the present invention, the shape (or aperture) of the first through hole 11 in heat block 1, length and quantity can measure according to variable concentrations the selection that needs, air flow rate etc. carry out being applicable to; In the present embodiment, the first through hole 11 is set to circular hole, to facilitate processing; First through hole 11 comprises multiple, and multiple first through hole 11 is uniformly distributed.
Further, the material of heat block 1 and shape can measure according to variable concentrations the selection needing to carry out being applicable to; In the present embodiment, be preferably the material that density is low, coefficient of heat conductivity is higher, such as, adopt the aluminium alloy 2A12 (T7) that cost is low or 7A09 (T6); Heat block 1 is along the rectangular in cross-section perpendicular to the first through hole 11 airflow direction; In the present embodiment, the first through hole 11 is set to straight line circular hole, and to facilitate processing, whole heat block 1 is in cuboid; In multiple first through hole 11, the distance between any two the first through holes 11 is equal.First through hole 11 adopts porous design and be uniformly distributed design, can make larger with the surface of contact of mixed gas (air and fire extinguishing agent), heat conduction is faster, conduct heat evenly, reach the object evenly heated rapidly by the mixed gas flowed through wherein, thus realize thermostatic control, eliminate the impact of ambient temperature.
Equally, in the apparatus for measuring concentration of agent concentration measuring system of the present invention, the shape (or aperture) of the second through hole 21 in pressure measurement block 2, length and quantity can measure according to different agent concentration the selection that needs, air flow rate and predetermined pressure drop magnitudes etc. carry out being applicable to; In the present embodiment, the second through hole 21 is set to circular hole, to facilitate processing; Second through hole 21 comprises multiple, and multiple second through hole 21 is uniformly distributed.
Further, the material of pressure measurement block 2 and shape can measure according to variable concentrations the selection needing to carry out being applicable to; In the present embodiment, preferred pressure measurement block 2 adopts same material with heat block 1; Pressure measurement block 2 is along the rectangular in cross-section perpendicular to the second through hole 21 airflow direction, and identical with the cross-sectional sizes of heat block 1; Second through hole 21 is straight hole, and namely whole pressure measurement block 2 is in cuboid; In multiple second through hole 21, the distance between any two the second through holes 21 is equal.Second through hole 21 adopts porous design and be uniformly distributed design, can make the gas generation Laminar Flow flowed through wherein, and produce enough pressure drops.Pressure measurement block 2 is arranged on heat block 1 downstream (below shown in Fig. 1), after gas inflow pressure measurement block 2 after heating via heat block 1, flow through the second through hole 21 of multiple circle, thus produce pressure drop, use differential pressure pickup can measure the pressure reduction between pressure measurement block 2 entrance and exit.
In the apparatus for measuring concentration of agent concentration measuring system of the present invention, the inlet end of heat block 1 and the junction of the first end cap 3 are formed with the first pressure stabilizing cavity 71, the entrance of multiple first through hole 11 and the first opening of the first end cap 3 are all communicated with the first pressure stabilizing cavity 71, and the first pressure stabilizing cavity 71 is for the stable air-flow entered through the first opening of the first end cap 3.In addition, on the inlet end of heat block 1 and the first end cap 3, corresponding end face all can be set to multiple applicable shape as required, in the present embodiment, is offer groove at the inlet end of heat block 1, thus forms above-mentioned first pressure stabilizing cavity 71 with the first end cap 3.Certainly, in other preferred embodiments, also can offer groove on the first end cap 3, or offer groove simultaneously on heat block 1 and the first end cap 3.
The inlet end of pressure measurement block 2 and the endpiece junction of heat block 1 are formed with the second pressure stabilizing cavity 72, the outlet of multiple first through hole 11 and the entrance of multiple second through hole 21 are all communicated with the second pressure stabilizing cavity 72, second pressure stabilizing cavity 72 is for stable air-flow after heat block 1 heats, thus the fluctuation of elimination pressure is on the impact of measurement of concetration.Equally, the endpiece can offering groove or heat block 1 at the inlet end of pressure measurement block 2 herein offers groove, also can offer groove at relative two end faces simultaneously; In the present embodiment, preferably at the inlet end of pressure measurement block 2, there is groove, thus form the second pressure stabilizing cavity 72 with the endpiece of heat block 1.
The endpiece of pressure measurement block 2 and the junction of the second end cap 4 are formed with the 3rd pressure stabilizing cavity 73, the outlet of multiple second through hole 21 and the second opening of the second end cap 4 are all communicated with the 3rd pressure stabilizing cavity 73, and the 3rd pressure stabilizing cavity 73 is for stable air-flow after pressure measurement block 2 pressure drop.Equally, in the present embodiment, preferably on the second end cap 4, there is groove, thus form the 3rd pressure stabilizing cavity 73 with the endpiece of pressure measurement block 2.
In the apparatus for measuring concentration of agent concentration measuring system of the present invention, position that can be corresponding on the first end cap 3, second end cap 4, heat block 1 and pressure measurement block 2, multiple fixed orifice 8 is offered, for the first end cap 3, second end cap 4, heat block 1 and pressure measurement block 2 being fixed by bolt (not shown) along the axis direction being parallel to the first through hole 11.Further, it is peripheral that the multiple fixed orifices 8 on heat block 1 are evenly distributed on the first through hole 11, and it is peripheral that the multiple fixed orifices 8 on pressure measurement block 2 are evenly distributed on the second through hole 21, makes topology layout more reasonable, fixing more firm.
In the apparatus for measuring concentration of agent concentration measuring system of the present invention, the structure of heating member can carry out the setting be applicable to as required.In the present embodiment, heating member comprises heating plate 9, temperature control module (not shown) and temperature sensor 91 etc.
It is peripheral with pressure measurement block 2 that heating plate 9 is fixedly installed on by bolt or the mode such as bonding the heat block 1 be connected, for controllably heating heat block 1 and pressure measurement block 2.Temperature control module adopts external setting, and is connected with heating plate 9, and heat block 1 and pressure measurement block 2, under the control of temperature control module, heat and stablize to predetermined temperature T by heating plate 9 in advance.Temperature sensor 91, for detecting the real time temperature of heat block 1 and pressure measurement block 2, can be used in FEEDBACK CONTROL heating plate 9.
The apparatus for measuring concentration of agent concentration measuring system of the present invention can also comprise volume control device 10, between the second opening being arranged on the second end cap 4 and vacuum pump, for controlling the uninterrupted of whole apparatus for measuring concentration.
The apparatus for measuring concentration measuring method of agent concentration measuring system of the present invention is as follows:
When vacuum pump work, tested gas (combination gas of fire extinguishing agent and air) enters the first pressure stabilizing cavity 71 by the first opening of the first end cap 3; Enter in multiple first through holes 11 of heat block 1 after the first pressure stabilizing cavity 71 is stable; By heating member, the air-flow of the first through hole 11 being arranged in heat block 1 is heated to predetermined temperature; Gas after heating enters the second pressure stabilizing cavity 72, and after the second pressure stabilizing cavity 72 is stable, to enter in multiple second through holes of pressure measurement block 2 21, wherein, the first pressure measurement mouth 5 is connected with the second pressure stabilizing cavity 72, is high-pressure side; After gas after heating to flow through in the second through hole of pressure measurement block 2 21, arriving the 3rd pressure stabilizing cavity 73, there is certain decline in gaseous tension, between the second pressure stabilizing cavity 72 and the 3rd pressure stabilizing cavity 73, form certain pressure reduction, second pressure measurement mouth 6 is connected with the 3rd pressure stabilizing cavity 73, is low pressure end; The pressure reduction between the first pressure measurement mouth 5 and the second pressure measurement mouth 6 measured by use differential pressure pickup, through converting, can obtain the agent concentration of tested gas.
The apparatus for measuring concentration of agent concentration measuring system of the present invention utilizes the corresponding relation of pressure drop and agent concentration, achieve the differential agent concentration of single channel to measure, real-time elimination ambient temperature, atmospheric pressure are on the impact of measuring accuracy, and measuring accuracy is high.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (10)
1. an apparatus for measuring concentration for agent concentration measuring system, for measuring the concentration of scheduled measurement point on piggyback pod, it is characterized in that, described apparatus for measuring concentration comprises:
Heat block (1), comprise inlet end, endpiece and the first through hole (11), the entrance of described first through hole (11) is positioned on the inlet end end face of described heat block (1), and the outlet of described first through hole (11) is positioned on the endpiece end face of described heat block (1);
Pressure measurement block (2), comprise inlet end, endpiece and the second through hole (21), the entrance of described second through hole (21) is positioned on the inlet end end face of described pressure measurement block (2), the outlet of described second through hole (21) is positioned on the endpiece end face of described pressure measurement block (2), the inlet end of described pressure measurement block (2) is connected with the endpiece of described heat block (1), and described first through hole (11) and described second through hole (21) are tightly connected;
First end cap (3), sealing arranges the inlet end of described heat block (1), described first end cap (3) has the first opening for described first through hole (11) being communicated with the scheduled measurement point of described piggyback pod;
Second end cap (4), sealing arranges the endpiece of described pressure measurement block (2), described second end cap (4) has the second opening for described second through hole (21) being communicated with vacuum pump;
First pressure measurement mouth (5), is arranged on the porch of described second through hole (21);
Second pressure measurement mouth (6), is arranged on the exit of described second through hole (21);
Differential pressure pickup, is connected with described first pressure measurement mouth (5) and described second pressure measurement mouth (6) respectively, for detecting the pressure reduction between described first pressure measurement mouth (5) and described second pressure measurement mouth (6);
Heating member, for being heated to predetermined temperature by described heat block (1) and described pressure measurement block (2).
2. the apparatus for measuring concentration of agent concentration measuring system according to claim 1, is characterized in that, described first through hole (11) in described heat block (1) comprises multiple, and is uniformly distributed.
3. the apparatus for measuring concentration of agent concentration measuring system according to claim 2, it is characterized in that, described heat block (1) along perpendicular to the rectangular in cross-section of described first through hole (11) airflow direction, described first through hole (11) is straight hole, and the distance between any two described first through holes (11) is equal.
4. the apparatus for measuring concentration of agent concentration measuring system according to claim 3, is characterized in that, described second through hole (21) in described pressure measurement block (2) comprises multiple, and is uniformly distributed.
5. the apparatus for measuring concentration of agent concentration measuring system according to claim 4, it is characterized in that, described pressure measurement block (2) along perpendicular to the rectangular in cross-section of described second through hole (21) airflow direction, and it is identical with the cross-sectional sizes of described heat block (1), described second through hole (21) is straight hole, and the distance between any two described second through holes (21) is equal.
6. the apparatus for measuring concentration of agent concentration measuring system according to claim 1 or 5, it is characterized in that, the inlet end of described heat block (1) and the junction of described first end cap (3) are formed with the first pressure stabilizing cavity (71), and the entrance of multiple described first through hole (11) and the first opening of described first end cap (3) are all communicated with described first pressure stabilizing cavity (71);
The inlet end of described pressure measurement block (2) and the endpiece junction of described heat block (1) are formed with the second pressure stabilizing cavity (72), and the outlet of multiple described first through hole (11) and the entrance of multiple described second through hole (21) are all communicated with described second pressure stabilizing cavity (72);
The endpiece of described pressure measurement block (2) and the junction of described second end cap (4) are formed with the 3rd pressure stabilizing cavity (73), and the outlet of multiple described second through hole (21) and the second opening of described second end cap (4) are all communicated with described 3rd pressure stabilizing cavity (73).
7. the apparatus for measuring concentration of agent concentration measuring system according to claim 6, it is characterized in that, the inlet end of described heat block (1) has groove, for forming described first pressure stabilizing cavity (71) with described first end cap (3);
The inlet end of described pressure measurement block (2) has groove, for forming described second pressure stabilizing cavity (72) with the endpiece of described heat block (1);
Described second end cap (4) has groove, for forming described 3rd pressure stabilizing cavity (73) with the endpiece of described pressure measurement block (2).
8. the apparatus for measuring concentration of agent concentration measuring system according to claim 6, it is characterized in that, in the upper corresponding position of described first end cap (3), described second end cap (4), described heat block (1) and described pressure measurement block (2), multiple fixed orifice (8) is offered, for described first end cap (3), described second end cap (4), described heat block (1) and described pressure measurement block (2) being fixed by bolt along the axis direction being parallel to described first through hole (11);
It is peripheral that multiple described fixed orifice (8) on described heat block (1) is evenly distributed on described first through hole (11), and it is peripheral that the multiple described fixed orifice (8) on described pressure measurement block (2) is evenly distributed on described second through hole (21).
9. the apparatus for measuring concentration of agent concentration measuring system according to claim 6, is characterized in that, described heating member comprises:
Heating plate (9), the described heat block (1) be connected described in being arranged on is peripheral with described pressure measurement block (2), for controllably heating described heat block (1) and described pressure measurement block (2);
Temperature control module, for controlling described heating plate (9);
Temperature sensor (91), for detecting the real time temperature of described heat block (1) and described pressure measurement block (2).
10. the apparatus for measuring concentration of agent concentration measuring system according to claim 6, is characterized in that, also comprise:
Volume control device (10), between the second opening being arranged on described second end cap (4) and described vacuum pump, for controlling the uninterrupted of whole described apparatus for measuring concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510744993.8A CN105424546A (en) | 2015-11-04 | 2015-11-04 | Concentration measuring device of fire extinguishing agent concentration measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510744993.8A CN105424546A (en) | 2015-11-04 | 2015-11-04 | Concentration measuring device of fire extinguishing agent concentration measuring system |
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| CN105424546A true CN105424546A (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510744993.8A Pending CN105424546A (en) | 2015-11-04 | 2015-11-04 | Concentration measuring device of fire extinguishing agent concentration measuring system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004219386A (en) * | 2003-01-17 | 2004-08-05 | Vacuum Products Kk | Concentration measuring instrument for gas mixture comprising two kinds of gases |
| CN102120071A (en) * | 2011-02-15 | 2011-07-13 | 中国航空工业集团公司西安飞机设计研究所 | Method for measuring concentration of extinguishing agent in engine cabin of airplane |
| CN102520013A (en) * | 2011-12-22 | 2012-06-27 | 中国科学技术大学 | Hot-film gas extinguishing chemical concentration sensing module |
| CN103163046A (en) * | 2013-03-06 | 2013-06-19 | 中国科学技术大学 | Gaseous extinguishing agent concentration measure apparatus |
| KR20130075451A (en) * | 2011-12-27 | 2013-07-05 | 재단법인 포항산업과학연구원 | Method for measuring concentration of gas in mixed gases |
-
2015
- 2015-11-04 CN CN201510744993.8A patent/CN105424546A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004219386A (en) * | 2003-01-17 | 2004-08-05 | Vacuum Products Kk | Concentration measuring instrument for gas mixture comprising two kinds of gases |
| CN102120071A (en) * | 2011-02-15 | 2011-07-13 | 中国航空工业集团公司西安飞机设计研究所 | Method for measuring concentration of extinguishing agent in engine cabin of airplane |
| CN102520013A (en) * | 2011-12-22 | 2012-06-27 | 中国科学技术大学 | Hot-film gas extinguishing chemical concentration sensing module |
| KR20130075451A (en) * | 2011-12-27 | 2013-07-05 | 재단법인 포항산업과학연구원 | Method for measuring concentration of gas in mixed gases |
| CN103163046A (en) * | 2013-03-06 | 2013-06-19 | 中国科学技术大学 | Gaseous extinguishing agent concentration measure apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 刘玉军 等: "《纺粘和熔喷非织造布手册》", 30 April 2014, 中国纺织出版社 * |
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Application publication date: 20160323 |