CN204583212U - A kind of VMC for environmental test chamber Rapid replacement and smoke evacuation - Google Patents
A kind of VMC for environmental test chamber Rapid replacement and smoke evacuation Download PDFInfo
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- CN204583212U CN204583212U CN201420759929.8U CN201420759929U CN204583212U CN 204583212 U CN204583212 U CN 204583212U CN 201420759929 U CN201420759929 U CN 201420759929U CN 204583212 U CN204583212 U CN 204583212U
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Abstract
The utility model belongs to environmental test technical field, is specifically related to a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation, and object is to solve the problem that prior art cannot meet fast gas displacement and the requirement of Dynamic High-accuracy Stress control.It is characterized in that: comprise experimental cabin body, air intake assembly and natural degassing function assembly; Wherein, it is external that the part of air intake assembly is arranged on experimental cabin, and another part is arranged in experimental cabin body; Nature degassing function assembly is arranged in experimental cabin body.The utility model adopts bottom sides air inlet, and top portion sheds the experimental cabin body of air port exhaust, and make airflow circulating in experimental cabin body abundant, gas displacement speed is fast, and dead band is little, and structure is simple, is easy for installation and maintenance.
Description
Technical field
The utility model belongs to environmental test technical field, is specifically related to a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation.
Background technology
In product development process, for examination product working condition in particular circumstances, often need the environmental test space that construction one is closed, in blocking test space, simulate various particular surroundings during product work, comprise high/low temperature, sand dust, salt fog, drench with rain, the environment such as low pressure, hypoxemia.
Test space for simulated hypoxia environment generally adopts following two kinds of operation principles, a kind of is vacuum state residing when the air in test space being evacuated to product real work, the upper low low-oxygen environment of simulation product as true as a die, this has higher requirement to the compressive resistance of test space and vaccum-pumping equipment; Another uses economy nitrogen safe again that the air displacement in test space is become normal pressure low oxygen environment, burden can't be brought to the structural strength of test space while meeting low-oxygen environment simulation, be a kind of economy and effective low-oxygen environment test method.
Using the air in nitrogen displacement test space to form low-oxygen environment needs for test space is equipped with a set of air inlet system and exhaust system, these air inlet system and exhaust system need realize the fast gas displacement of test space, simultaneously because product in process of the test can produce flue dust, air inlet system and exhaust system also effectively should discharge flue dust, and the dynamic equilibrium that air inlet system and exhaust system should maintain charge flow rate and extraction flow is in the course of the work constant with the pressure in guarantee test space.This is similar to the air conditioning system of building trade, but traditional air conditioner VMC is difficult to meet fast gas displacement requirement, and the control accuracy of its intake and exhaust flow is also difficult to the pressure controling precision requirement reaching blocking test space.
Summary of the invention
The purpose of this utility model is that solving prior art cannot meet fast gas displacement and the pressure controlled problem of Dynamic High-accuracy, provides a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation.
The utility model is achieved in that
For a VMC for environmental test chamber Rapid replacement and smoke evacuation, comprise experimental cabin body, air intake assembly and natural degassing function assembly; Wherein, it is external that the part of air intake assembly is arranged on experimental cabin, and another part is arranged in experimental cabin body; Nature degassing function assembly is arranged in experimental cabin body.
Air intake assembly as above comprises charge flow rate control valve, air inlet distributor and intake muffler; Wherein, air inlet distributor is arranged on bottom experimental cabin body sidewall, for metal is cylindric, has 1 air inlet and 15 gas outlets, cylindrical shell closed at both ends, cylindrical shell supports on the ground with support; Charge flow rate control valve is connected with the air inlet of air inlet distributor; Intake muffler is connected with the gas outlet of air inlet distributor.
Natural degassing function assembly as above comprises air outlet, exhaust charge road, electric butterfly valve, gas concentration sensor, Forced discharge fan and exhaust main road; Wherein, the bottom of described air outlet is rectangular horn shape, top is pipe, and bottom and top are separately installed with square flange and circular flange; Air outlet is arranged on 16 gas outlets at experimental cabin body top; Exhaust charge road is pipe, and one end is air inlet, and the other end is gas outlet, and tube wall has multiple circular hole as air inlet, its air inlet is connected with air outlet respectively; Electric butterfly valve and gas concentration sensor are arranged on the gas outlet place in exhaust charge road, and Forced discharge fan entrance is connected with air outlet, and the outlet of Forced discharge fan is connected with exhaust main road.
It also comprises overpressure relief valve and filter; Described overpressure relief valve inlet is connected with air outlet, and the outlet of overpressure relief valve is connected with exhaust main road, and filter is arranged on the exit position in exhaust main road; Filter is arranged on the end in exhaust main road.
Experimental cabin body as above is a sealing metal housing, and one side bottom has 1 gas access, and its top is provided with 18 gas vents.
Air inlet distributor as above adopts stainless steel material, and air outlet, exhaust charge road, exhaust main road material are galvanized steel plain sheet, and at outer surface parcel heat-barrier material.
Silencer as above is connected in sequence by manual ball valve, elbow and gas muffler, totally 15.
Exhaust charge road as above tube wall has three circular holes, has 4; Electric butterfly valve and gas concentration sensor have 4 respectively.
Filter as above adopts gas medium effeciency filter, and filtering rank is 1 μm.
The beneficial effects of the utility model are:
1. adopt bottom sides air inlet, top portion sheds the experimental cabin body of air port exhaust, and make airflow circulating in experimental cabin body abundant, gas displacement speed is fast, and dead band is little, and structure is simple, is easy for installation and maintenance.
2. adopt electric butterfly valve and gas concentration sensor, making often to organize exhaust charge road can gauge tap separately.In gas displacement process when detecting that the concentration value of certain gas concentration sensor has downward trend, then the opening of electric butterfly valve in this exhaust charge road is turned down, and then ensure that the region at place, four exhaust charge roads is evenly replaced.Often organizing exhaust charge road can gauge tap separately, according to a few groups of exhaust charge roads above testpieces installation position selection unlatching testpieces, can close other exhaust charge roads, the flue dust produced in process of the test is discharged rapidly in environmental test process.
3. system inlet end and exhaust end are all provided with charge flow rate control valve or electric butterfly valve, and the aperture by control flow check adjustable valve makes the balance of charge flow rate and extraction flow formative dynamics, and the pressure of body inside, guarantee test cabin is maintained within a certain range.
4. adopt overpressure relief valve, can be cabin body pressure release effectively when the dynamic equilibrium of intake and exhaust in experimental cabin body is difficult to by controlling to ensure, ensureing that cabin body is not destroyed.
5. adopt Forced discharge fan, when after off-test, coordinate inlet end to pass into air, can be air by the gas displacement in experimental cabin rapidly, facilitate personnel to enter underdeck operation at short notice.
6. adopt air inlet distributor, the gas uniform entered is assigned as several branch roads, sprays in the horizontal direction bottom experimental cabin body side surface, ensure to spray in the horizontal direction evenly, each branch road is provided with muffler, avoids gas to produce noise when large discharge sprays into.
7. adopt filter, its gas is disposed to air again after filtering, avoids bulky grain flue dust to enter air.
Accompanying drawing explanation
Fig. 1 is the top view of a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation of the present utility model;
Fig. 2 is the side view of a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation of the present utility model;
Fig. 3 is the structural representation of charge flow rate control valve in Fig. 1;
Fig. 4 is the structural representation of air inlet distributor in Fig. 1;
Fig. 5 is the structural representation of intake muffler in Fig. 1;
Fig. 6 is the structural representation of air outlet in Fig. 1;
Fig. 7 is the structural representation in exhaust charge road in Fig. 1;
Fig. 8 is the structural representation of electric butterfly valve in Fig. 1;
Fig. 9 is the structural representation of Forced discharge fan in Fig. 1;
Figure 10 is the structural representation in exhaust main road in Fig. 1;
Figure 11 is the workflow diagram of a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation of the present utility model;
In figure, 1. charge flow rate control valve; 2. air inlet distributor; 3. intake muffler; 4. air outlet; 5. exhaust charge road; 6. electric butterfly valve; 7. oxygen concentration sensor; 8. Forced discharge fan; 9. overpressure relief valve; 10. exhaust main road; 11. filters; 12. experimental cabin bodies.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation of the present utility model is described:
A kind of VMC for environmental test chamber Rapid replacement and smoke evacuation, comprise experimental cabin body 12, air intake assembly and natural degassing function assembly, wherein, a part for air intake assembly is arranged on outside experimental cabin body 12, another part is arranged in experimental cabin body, it passes into the gas of displacement in experimental cabin body, sprays in the horizontal direction after gas noise reduction being slowed down in experimental cabin body inside bottom.Nature degassing function assembly is arranged in experimental cabin body, for the gas concentration in experimental cabin body in monitoring test process, and it is discharged rapidly.
In the present embodiment, air intake assembly comprises charge flow rate control valve 1, air inlet distributor 2, intake muffler 3, air intake assembly passes into the gas of displacement in experimental cabin body 12 at experimental cabin body 12 sidewall bottom, the flow of gas regulates by charge flow rate control valve 1, and by air inlet distributor 2, gas uniform is distributed into 15 branch roads, then spray in the horizontal direction in experimental cabin body inside bottom after intake muffler 3 noise reduction is slowed down.Nature degassing function assembly comprises air outlet 4, exhaust charge road 5, electric butterfly valve 6, gas concentration sensor 7, Forced discharge fan 8 and exhaust main road 10.The gas of experimental cabin body 12 inside is collected into exhaust main road 10 by the air outlet 4 and exhaust charge road 5 being arranged on experimental cabin body 12 top, each exhaust charge road 5 controls aperture respectively by electric butterfly valve 6, the gas concentration sensor 7 that each exhaust charge road 5 is arranged is used for monitoring the gas concentration in this exhaust charge road 5, can control the aperture in corresponding exhaust charge road 5 according to change in concentration situation.Wherein the gas of experimental cabin body 12 inside is caused exhaust main road 10 by 1 air outlet 4 and Forced discharge fan 8, and the flue dust for off-test rear deck body inside discharges rapidly.Wherein 1 air outlet 4 and overpressure relief valve 9 exceed design limit for preventing the gas pressure of experimental cabin body 12 inside, and when pressure limit, overpressure relief valve 9 will automatically be opened and then enter excessive gas to exhaust main road 10.Filter 11 is arranged on the end in exhaust main road, is disposed to outside atmosphere by after the contaminant filter of gas in exhaust main road.
As Figure 1-10 shows, experimental cabin body 12 is a sealing metal housing, and in the present embodiment, experimental cabin body 12 is rectangular-shaped, and one side bottom has 1 gas access, and its top is provided with 18 gas vents.Air inlet distributor 2 is arranged on experimental cabin body 12 sidewall bottom, and it is that metal is cylindric, has 1 air inlet and 15 gas outlets, cylindrical shell closed at both ends, cylindrical shell supports on the ground with support.Charge flow rate control valve 1 is connected with the air inlet of air inlet distributor 2.Intake muffler 3 is connected with the gas outlet of air inlet distributor 2.In the present embodiment, silencer 3 is connected in sequence by manual ball valve, elbow and gas muffler, and they are the universal product, totally 15.The bottom of air outlet 4 is rectangular horn shape, top is pipe, and bottom and top are separately installed with square flange and circular flange; It is arranged on 16 gas outlets at experimental cabin body 12 top.Exhaust charge road 5 is pipe, and one end is air inlet, and the other end is gas outlet, tube wall has multiple circular hole as air inlet, and its air inlet is connected with air outlet 4 respectively.In the present embodiment, exhaust charge road 5 tube wall has three circular holes, it has 4.Electric butterfly valve 6 and gas concentration sensor 7 are arranged on the gas outlet place in exhaust charge road 5, and in the present embodiment, electric butterfly valve 6 and gas concentration sensor 7 have 4 respectively.Forced discharge fan 8 entrance is connected with air outlet 4, and the outlet of Forced discharge fan 8 is connected with exhaust main road 10.Overpressure relief valve 9 entrance is connected with air outlet 4, and the outlet of overpressure relief valve 9 is connected with exhaust main road 10, and filter 11 is arranged on the exit position in exhaust main road 10.
Charge flow rate control valve 1, electric butterfly valve 6, gas concentration sensor 7, Forced discharge fan 8, overpressure relief valve 9 and filter 11 all can adopt the universal product to realize.Wherein, Forced discharge fan 8 adopts gas axial flow electric fan to realize.Filter adopts gas medium effeciency filter, and filtering rank is 1 μm.
Charge flow rate control valve, air inlet distributor, intake muffler form the air intake assembly of this VMC jointly, air intake assembly passes into the gas of displacement bottom experimental cabin body sidewall in the body of cabin, the flow of gas regulates by charge flow rate control valve, and by air inlet distributor, gas uniform is distributed into 15 branch roads, then spray in the horizontal direction in experimental cabin body inside bottom after intake muffler noise reduction is slowed down.Wherein 16 air outlets and exhaust charge road, electric butterfly valve, gas concentration sensor, exhaust main road form the natural degassing function assembly of this VMC jointly, the gas of experimental cabin body inside is collected into exhaust main road by the air outlet and exhaust charge road being arranged on body top, cabin, each exhaust charge road controls aperture respectively by electric butterfly valve, the gas concentration sensor that each exhaust charge road is arranged is used for monitoring the gas concentration in this exhaust charge road, can control the aperture in corresponding exhaust charge road according to change in concentration situation.Wherein the gas of experimental cabin body inside is caused exhaust main road by 1 air outlet and Forced discharge fan, and the flue dust for off-test rear deck body inside discharges rapidly.Wherein 1 air outlet and overpressure relief valve exceed design limit for preventing the gas pressure of experimental cabin body inside, and when pressure limit, overpressure relief valve will automatically be opened and then enter excessive gas to exhaust main road.Filter is arranged on the end in exhaust main road, is disposed to outside atmosphere by after the contaminant filter of gas in exhaust main road.
Wherein air inlet distributor 2 adopts stainless steel material, and air outlet, exhaust charge road, exhaust main road material are galvanized steel plain sheet, and at outer surface parcel heat-barrier material.
As shown in figure 11, be the workflow diagram of this VMC, first carry out gas displacement, open all electric butterfly valves in the exhaust charge road at body top, cabin; Open charge flow rate control valve, blow down for carrying out displacement to the gas in space in cabin.In replacement process, when the gas concentration sensor in a certain exhaust charge road detects that gas concentration in this exhaust charge road is lower than other exhaust charge road, this exhaust charge road opening of electric butterfly valve is turned down; When four gas concentration sensors all detect that gas concentration reaches desired value, open two exhaust charge roads above testpieces, close all the other two exhaust charge roads, replacement process terminates.Test can start, and in process of the test, pressure and gas concentration in real-time detection experiment cabin, pass into the flow of gas and extraction flow makes pressure and gas concentration in experimental cabin control in certain scope by regulating.After test, be that air is blown into air in experimental cabin by air inlet change of medium; After the gas concentration detected in each exhaust charge road all returns to air condition, close charge flow rate control valve, opening encapsulation hatch door; Start blower fan to maximum stream flow, discharge flue dust in cabin, after this operating personnel can enter underdeck operation.
The beneficial effects of the utility model are:
1. adopt bottom sides air inlet, top portion sheds the experimental cabin body of air port exhaust, and make airflow circulating in experimental cabin body abundant, gas displacement speed is fast, and dead band is little, and structure is simple, is easy for installation and maintenance.
2. adopt electric butterfly valve and gas concentration sensor, making often to organize exhaust charge road can gauge tap separately.In gas displacement process when detecting that the concentration value of certain gas concentration sensor has downward trend, then the opening of electric butterfly valve in this exhaust charge road is turned down, and then ensure that the region at place, four exhaust charge roads is evenly replaced.Often organizing exhaust charge road can gauge tap separately, according to a few groups of exhaust charge roads above testpieces installation position selection unlatching testpieces, can close other exhaust charge roads, the flue dust produced in process of the test is discharged rapidly in environmental test process.
3. system inlet end and exhaust end are all provided with charge flow rate control valve or electric butterfly valve, and the aperture by control flow check adjustable valve makes the balance of charge flow rate and extraction flow formative dynamics, and the pressure of body inside, guarantee test cabin is maintained within a certain range.
4. adopt overpressure relief valve, can be cabin body pressure release effectively when the dynamic equilibrium of intake and exhaust in experimental cabin body is difficult to by controlling to ensure, ensureing that cabin body is not destroyed.
5. adopt Forced discharge fan, when after off-test, coordinate inlet end to pass into air, can be air by the gas displacement in experimental cabin rapidly, facilitate personnel to enter underdeck operation at short notice.
6. adopt air inlet distributor, the gas uniform entered is assigned as several branch roads, sprays in the horizontal direction bottom experimental cabin body side surface, ensure to spray in the horizontal direction evenly, each branch road is provided with muffler, avoids gas to produce noise when large discharge sprays into.
7. adopt filter, its gas is disposed to air again after filtering, avoids bulky grain flue dust to enter air.
Claims (9)
1., for a VMC for environmental test chamber Rapid replacement and smoke evacuation, it is characterized in that: comprise experimental cabin body (12), air intake assembly and natural degassing function assembly; Wherein, a part for air intake assembly is arranged on experimental cabin body (12) outward, and another part is arranged in experimental cabin body; Nature degassing function assembly is arranged in experimental cabin body.
2. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 1, is characterized in that: described air intake assembly comprises charge flow rate control valve (1), air inlet distributor (2) and intake muffler (3); Wherein, air inlet distributor (2) is arranged on experimental cabin body (12) sidewall bottom, for metal is cylindric, has 1 air inlet and 15 gas outlets, cylindrical shell closed at both ends, cylindrical shell supports on the ground with support; Charge flow rate control valve (1) is connected with the air inlet of air inlet distributor (2); Intake muffler (3) is connected with the gas outlet of air inlet distributor (2).
3. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 1, is characterized in that: described natural degassing function assembly comprises air outlet (4), exhaust charge road (5), electric butterfly valve (6), gas concentration sensor (7), Forced discharge fan (8) and exhaust main road (10); Wherein, the bottom of described air outlet (4) is rectangular horn shape, top is pipe, and bottom and top are separately installed with square flange and circular flange; Air outlet (4) is arranged on 16 gas outlets at experimental cabin body (12) top; Exhaust charge road (5) is pipe, and one end is air inlet, and the other end is gas outlet, tube wall has multiple circular hole as air inlet, and its air inlet is connected with air outlet (4) respectively; Electric butterfly valve (6) and gas concentration sensor (7) are arranged on the gas outlet place in exhaust charge road (5), Forced discharge fan (8) entrance is connected with air outlet (4), and the outlet of Forced discharge fan (8) is connected with exhaust main road (10).
4. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 1, is characterized in that: it also comprises overpressure relief valve (9) and filter (11); Described overpressure relief valve (9) entrance is connected with air outlet (4), the outlet of overpressure relief valve (9) is connected with exhaust main road (10), and filter (11) is arranged on the exit position of exhaust main road (10); Filter (11) is arranged on the end in exhaust main road.
5. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 1, it is characterized in that: described experimental cabin body (12) is a sealing metal housing, one side bottom has 1 gas access, and its top is provided with 18 gas vents.
6. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 2, it is characterized in that: described air inlet distributor (2) adopts stainless steel material, air outlet, exhaust charge road, exhaust main road material are galvanized steel plain sheet, and at outer surface parcel heat-barrier material.
7. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 2, is characterized in that: described silencer (3) is connected in sequence by manual ball valve, elbow and gas muffler, 15 totally.
8. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 3, is characterized in that: described exhaust charge road (5) tube wall has three circular holes, has 4; Electric butterfly valve (6) and gas concentration sensor (7) have 4 respectively.
9. a kind of VMC for environmental test chamber Rapid replacement and smoke evacuation according to claim 4, it is characterized in that: described filter (11) adopts gas medium effeciency filter, filtering rank is 1 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759929.8U CN204583212U (en) | 2014-12-05 | 2014-12-05 | A kind of VMC for environmental test chamber Rapid replacement and smoke evacuation |
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| CN201420759929.8U CN204583212U (en) | 2014-12-05 | 2014-12-05 | A kind of VMC for environmental test chamber Rapid replacement and smoke evacuation |
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| CN204583212U true CN204583212U (en) | 2015-08-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108671969A (en) * | 2018-05-14 | 2018-10-19 | 北京强度环境研究所 | Air ventilation device |
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2014
- 2014-12-05 CN CN201420759929.8U patent/CN204583212U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108671969A (en) * | 2018-05-14 | 2018-10-19 | 北京强度环境研究所 | Air ventilation device |
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