CN206563644U - High-frequency induction wind-tunnel vacuum pressure regulating system - Google Patents
High-frequency induction wind-tunnel vacuum pressure regulating system Download PDFInfo
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- CN206563644U CN206563644U CN201720171242.6U CN201720171242U CN206563644U CN 206563644 U CN206563644 U CN 206563644U CN 201720171242 U CN201720171242 U CN 201720171242U CN 206563644 U CN206563644 U CN 206563644U
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Abstract
High-frequency induction wind-tunnel vacuum pressure regulating system, vacuum pressure regulating system includes 200 liter/second vavuum pumps, 300 liter/second vavuum pumps, 600 liter/second vavuum pumps, 1800 liter/second vavuum pumps, 5000 liter/second vavuum pumps, low vacuum flapper valve, cap of high-vacuum baffle valve, vacuum meter, aeration valve, first pressure sensor, second pressure sensor and electric check valve.When high-frequency induction wind-tunnel needs rough vacuum (i.e. 20~100kpa), the less vacuum pump operation of first three groups draft；When high-frequency induction wind-tunnel needs condition of high vacuum degree (i.e.≤20kpa), five groups of vavuum pumps are run simultaneously, are realized maximum draft, are met wind tunnel operation needs.The utility model is mainly used in the regulation of high-frequency induction wind-tunnel vacuum pressure, realizes the technical requirements such as the high-power igniting of high-frequency induction heating wind-tunnel, long-play.
Description
Technical field
The utility model is related to high-frequency induction wind-tunnel vacuum pressure regulating system, belongs to space flight ground simulation test wind-tunnel skill
Art field.
Background technology
High-frequency induction heating wind-tunnel be in order to meet Gao Han, high hot-fluid and the new terrestrial solar heat protection test platform researched and developed, it
The features such as with flow field stabilization, pure hot gas, high enthalpy, be a kind of new space flight ground solar heat protection modelling technique.For
Ensure the operation of this wind-tunnel, vacuum condition is one of deciding factor.The control method of high-frequency induction wind-tunnel vacuum pressure regulation
The key technology that exactly guarantee test is lighted a fire and run.
Because high-frequency induction wind-tunnel needs high vacuum to start, while need to carry out long-time examination in low vacuum environment again
Test, most of high-frequency induction wind-tunnel of prior art can not meet the startup of below 100Pa high vacuum, can frequent breakage heater master
Body device, and ignition success rate is relatively low.After lighting a fire successfully, prior art can not adjust vacuum environment in time (i.e. in Gao Zhen again
Free switching between empty and low vacuum), experiment is not reached required parameters state.
Utility model content
Technology of the present utility model solves problem：Overcoming the deficiencies in the prior art, there is provided high-frequency induction wind-tunnel vacuum pressure
Draught control system, realizes the vacuum test environment needed for high-frequency induction heating wind-tunnel, can be between high vacuum and low vacuum certainly
By switching, it is ensured that its smooth ignition and for a long time stable operation of experiment.
Technical solution of the present utility model is：High-frequency induction wind-tunnel vacuum pressure regulating system, including 200 liters/second
Vavuum pump, 300 liter/second vavuum pumps, 600 liter/second vavuum pumps, 1800 liter/second vavuum pumps, 5000 liter/second vavuum pumps, low vacuum gear
Plate valve, cap of high-vacuum baffle valve, vacuum meter, aeration valve, first pressure sensor, second pressure sensor and electric check valve；
High-frequency induction wind-tunnel is connected by pipeline and vacuum meter one end, the vacuum meter other end simultaneously with one end of aeration valve and
Cap of high-vacuum baffle valve import is connected, and the outlet of cap of high-vacuum baffle valve is sequentially connected 5000 liter/second vavuum pumps and 1800 by pipeline
Liter/second vavuum pump, 1800 liter/second vavuum pumps are connected with the one outlet of low vacuum flapper valve, the other end of aeration valve with it is low true
The import connection of neutral plate valve, another outlet of low vacuum flapper valve is sequentially connected 600 liter/second vavuum pumps, 300 by pipeline
Liter/second vavuum pump and 200 liter/second vavuum pumps, 200 liter/second vavuum pumps are connected by muffler with air；
Tank is connected by inlet pipeline with the water inlet of 300 liter/second vavuum pumps and 1800 liter/second vavuum pumps, described
First pressure sensor, electric check valve and second pressure sensor, 1800 liter/second vavuum pumps are disposed with inlet pipeline
Delivery port be connected with the water inlet of 600 liter/second vavuum pumps, the delivery port of 300 liter/second vavuum pumps and 200 liter/second vavuum pumps
Water inlet is connected, and the delivery port of the delivery port of 600 liter/second vavuum pumps and 200 liter/second vavuum pumps passes through outlet pipeline and water storage
Pond is connected.
Also include upper computer control system, PLC, temperature sensor and pressure sensor, PLC gathers each vavuum pump
Electric current, voltage data, and upper computer control system is transferred to, temperature sensor gathers the temperature of each vavuum pump and is transferred to
Upper computer control system, pressure sensor gathers the cooling water pressure of each vavuum pump, and upper computer control system is in vavuum pump
Electric current, voltage, temperature or cooling water pressure exceed default threshold value when alarmed.
The vacuum pressure regulating system is designed with the shielding quarantine measures of anti-electromagnetic interference, and vavuum pump and PLC it
Between, between PLC and temperature sensor, between PLC and pressure sensor be designed with photoelectric isolation module.
Also include frequency conversion parameter control module, the frequency conversion parameter for each vavuum pump to be set or changed.
The advantage of the utility model compared with prior art is as follows：
(1) the utility model is designed by binary channel, is realized low-vacuum-operating and high vacuum operation both of which, is met high
Static pressure requirement under frequency sensing wind-tunnel various requirement.Conventional vacuum pump group only has single flow pattern, does not possess both of which
Mutual switching, it is impossible to meet the test requirements document of high-frequency induction wind-tunnel.
(2) the utility model is met under High-frequency Interference environment just by carrying out anti-electromagnetic interference design to vavuum pump
Often work, control core position and compared with near-end position carries out special anti-electromagnetic shielding material parcel apart from high-frequency induction equipment.Phase
Than conventional vacuum pump group, by electromagnetic interference control module will be caused to fail or damage under unprotect state, and make unit can not be just
Often operation.
(3) vacuum pump group used surveys static pressure by high vacuum pattern and can reach below 100Pa in the utility model, meets
The test requirements document of high-frequency induction wind-tunnel, such a vacuum pressure regulation control design case is directed to condition of high vacuum degree demand, especially anti-on ground
There is critically important practical value in heat test field.
Brief description of the drawings
Fig. 1 is design diagram of the present utility model.
Embodiment
As shown in figure 1, the utility model high-frequency induction wind-tunnel vacuum pressure regulating system include 200 liter/second vavuum pumps 1,
300 liter/second vavuum pumps 2,600 liter/second vavuum pumps 3,1800 liter/second vavuum pumps 4,5000 liter/second vavuum pumps 5, low vacuum baffle plate
Valve 6, cap of high-vacuum baffle valve 7, vacuum meter 8, aeration valve 9, first pressure sensor 10, second pressure sensor 11 and electronic cut-off
Valve 12.
High-frequency induction wind-tunnel is by pipeline and the connection of the one end of vacuum meter 8, the other end of vacuum meter 8 while one with aeration valve 9
End and the import of cap of high-vacuum baffle valve 7 connection, the outlet of cap of high-vacuum baffle valve 7 is sequentially connected 5000 liter/second vavuum pumps 5 by pipeline
Be connected with liter/second vavuum pump 4 of 1800 liter/second vavuum pump 4,1800 with the one outlet of low vacuum flapper valve 6, aeration valve 9 it is another
One end is connected with the import of low vacuum flapper valve 6, low vacuum flapper valve 6 another outlet by pipeline be sequentially connected 600 liters/
Second vavuum pump 3,300 liter/second vavuum pumps 2 and liter/second vavuum pump 1 of 200 liter/second vavuum pump 1,200 pass through muffler and air joins
It is logical；
Tank is connected by inlet pipeline with the water inlet of 300 liter/second vavuum pumps 2 and 1800 liter/second vavuum pumps 4, institute
State be disposed with inlet pipeline 11,1800 liters of first pressure sensor 10, electric check valve 12 and second pressure sensor/
The second delivery port of vavuum pump 4 is connected with the water inlet of 600 liter/second vavuum pumps 3, the delivery port and 200 of 300 liter/second vavuum pumps 2
The delivery port of the water inlet connection of liter/second vavuum pump 1, the delivery port of 600 liter/second vavuum pumps 3 and 200 liter/second vavuum pumps 1 leads to
Outlet pipeline is crossed to be connected with tank.
The electric current of each vavuum pump, voltage data collection are connected into upper computer control system, upper computer control system by PLC
Higher limit is set to carry out early warning.Vavuum pump cooling water pressure is connected into upper computer control system after being gathered by pressure sensor, very
Empty pump temperature is connected into upper computer control system after being gathered by temperature sensor, it is pre- that upper computer control system sets higher limit to carry out
It is alert.Collection forms document storing to all data in real time.
Each vavuum pump uses anti-electromagnetic interference design protection, and between vavuum pump and PLC, PLC and each sensor it
Between be designed with photoelectric isolation module, signal path uses metal-shielded wire, for example various sensors of significant points, data acquisition equipment
And control chip etc. is using special anti-electromagnetic shielding material parcel.
The utility model is further provided with frequency conversion parameter control module, the change for each vavuum pump to be set or changed
Frequency parameter, to ensure that high accurancy and precision is adjusted.
The utility model Low-vacuum mode operating index is that experiment vacuum environment is 20~100kpa；High vacuum mode operation
Index：It is≤20kpa to test vacuum environment.(i.e. 20~100kpa), first three groups when high-frequency induction wind-tunnel needs rough vacuum
The less vacuum pump operation of draft；When high-frequency induction wind-tunnel needs condition of high vacuum degree (i.e.≤20kpa), five groups of same lucks of vavuum pump
OK, maximum draft is realized, wind tunnel operation needs are met.Specifically, vacuum pressure adjusting method of the present utility model is as follows：
When running Low-vacuum mode, low vacuum flapper valve 6 is opened, cap of high-vacuum baffle valve 7 is closed, 200 liters/second are opened true
Empty pump 1, makes test section vacuum interval to 40~50Kpa, opens 300 liter/second vavuum pumps 2, and to be tested section of vacuum reaches 20
~30Kpa is interval, opens 600 liter/second vavuum pumps 3, and test section static pressure is stable in 20Kpa, meets Low-vacuum mode condition.
When running high vacuum pattern, Low-vacuum mode operation is repeated, to be tested section of static pressure is stable in 20Kpa, closes
Low vacuum flapper valve 6, opens cap of high-vacuum baffle valve 7, opens 1800 liter/second vavuum pumps 4, and to be tested section of vacuum reaches 0.8Kpa
Below and stablize constant, open 5000 liter/second vavuum pumps 5.In the case where not changing frequency conversion parameter, vacuum pump group will be evacuated to
Equipment end vacuum (actual measurement is≤100Pa).
In order to further improve the automaticity of system, vacuum pressure regulating system of the present utility model is transported in high vacuum
Except manual Starting mode, also high vacuum automatic control mode step by step above-mentioned during row mode.Controlled automatically in high vacuum
In mode processed, 200 liter/second vavuum pumps, 300 liter/second vavuum pumps, 600 liter/second vavuum pumps, 1800 liter/second vavuum pumps, 5000 liters/
Second each group of pump of vavuum pump can carry out start stop operation by clicking directly on corresponding icon.Also it can be pressed by clicking on high vacuum startup
Button, every group of pump is in the case of self-starting is completed, next group of vacuum pump group of automatic start, is sequentially completed whole startups of five groups of pumps.
The start and stop of every group of pump are controlled by PLC connection control panels by host computer operation interface, while testing ground is provided with manipulation cabinet
Direct Mechanical course.High vacuum automatic control mode, high vacuum need to be only clicked under stopped status and automatically controls 8, system will be certainly
It is dynamic to complete high vacuum mode startup operation, the vacuum that reaches capacity and steady pressure.Under high vacuum pattern, change frequency conversion ginseng
Number, can make vacuum pump set keep vacuum pressure value in below 5Kpa scopes arbitrary parameter.
The utility model is designed using the binary channel of high vacuum pattern and Low-vacuum mode, 600 liter/second vavuum pumps,
Tributary circuit is set between 1800 liter/second vavuum pumps, isolated by flapper valve, flapper valve, high vacuum are opened under Low-vacuum mode
Flapper valve is closed under state；Set after 5000 liter/second vavuum pumps and close flapper valve, high vacuum under flapper valve, Low-vacuum mode
Flapper valve is opened under state.Two paths connect high-frequency induction wind tunnel body simultaneously.In the less three groups of vacuum pump operations of aspiration
When, realize the stable operation of low vacuum；By the operation of two groups of flapper valves, change gas channels, realize that five groups of vavuum pumps are same
Shi Yunhang, reaches that aspiration vacuum amount is maximum, realizes wind-tunnel high vacuum state.Under high vacuum pattern, by adjusting 5000 liters/second
The frequency converter of vavuum pump, realizes the accurate adjustment of condition of high vacuum degree.Simultaneously again add modernization design, realize Automated condtrol and
The free switching controlled manually.By the monitoring to signals such as every group of vacuum pump voltage, electric current, cooling water temperatures, fortune is accomplished
The real-time monitoring of row state, also provides necessary operational support for test run.High-frequency induction technology has strong electromagnetic
Feature, can produce heating to surrounding metal and conductor and strong type number is disturbed, this utility model is directed to this feature, in control design case
In employ the protection of electromagnetic shielding, be effectively isolated electromagnetic interference of the high-frequency induction wind tunnel test to vacuum equipment.
The utility model can realize the vacuum test environment needed for high-frequency induction heating wind-tunnel, it is ensured that its smooth ignition and
The stable operation of experiment for a long time.Needed accurately to adjust vacuum environment in the body of hole according to experiment simultaneously, and to running
Every vacuum parameters in journey are monitored and early warning.The characteristics of for high-frequency induction wind-tunnel strong electromagnetic, carried out in design
The shielding quarantine measures of anti-electromagnetic interference, solve the interference and distortion of signal.The utility model passes through verification experimental verification, energy
High-frequency induction wind-tunnel vacuum pressure requirement is met, there is important use in space flight aerothermodynamics experiment field.
The utility model unspecified part belongs to general knowledge as well known to those skilled in the art.
Claims (4)
1. high-frequency induction wind-tunnel vacuum pressure regulating system, it is characterised in that：Including 200 liter/second vavuum pumps (1), 300 liters/second
Vavuum pump (2), 600 liter/second vavuum pumps (3), 1800 liter/second vavuum pumps (4), 5000 liter/second vavuum pumps (5), low vacuum baffle plate
Valve (6), cap of high-vacuum baffle valve (7), vacuum meter (8), aeration valve (9), first pressure sensor (10), second pressure sensor
And electric check valve (12) (11)；
High-frequency induction wind-tunnel is connected by pipeline and vacuum meter (8) one end, vacuum meter (8) other end simultaneously with aeration valve (9)
One end and cap of high-vacuum baffle valve (7) import connection, the outlet of cap of high-vacuum baffle valve (7) is sequentially connected 5000 liters/second by pipeline
Vavuum pump (5) and 1800 liter/second vavuum pumps (4), the one outlet of 1800 liter/second vavuum pumps (4) and low vacuum flapper valve (6) connect
Connect, the other end of aeration valve (9) is connected with the import of low vacuum flapper valve (6), another outlet of low vacuum flapper valve (6) is logical
Cross pipeline and be sequentially connected 600 liter/second vavuum pumps (3), 300 liter/second vavuum pumps (2) and 200 liter/second vavuum pumps (1), 200 liters/second
Vavuum pump (1) is connected by muffler with air；
Tank is connected by inlet pipeline with the water inlet of 300 liter/second vavuum pumps (2) and 1800 liter/second vavuum pumps (4), institute
State and first pressure sensor (10), electric check valve (12) and second pressure sensor (11) be disposed with inlet pipeline,
The delivery port of 1800 liter/second vavuum pumps (4) is connected with the water inlet of 600 liter/second vavuum pumps (3), 300 liter/second vavuum pumps (2)
Delivery port is connected with the water inlet of 200 liter/second vavuum pumps (1), and the delivery port and 200 liters/second of 600 liter/second vavuum pumps (3) are true
The delivery port of empty pump (1) is connected by outlet pipeline with tank.
2. high-frequency induction wind-tunnel vacuum pressure regulating system according to claim 1, it is characterised in that：Also include host computer
Control system, PLC, temperature sensor and pressure sensor, PLC gather the electric current of each vavuum pump, voltage data, and transmit
To upper computer control system, temperature sensor gathers the temperature of each vavuum pump and is transferred to upper computer control system, pressure
Sensor gathers the cooling water pressure of each vavuum pump, and upper computer control system is in the electric current of vavuum pump, voltage, temperature or cold
But alarmed when water pressure exceedes default threshold value.
3. high-frequency induction wind-tunnel vacuum pressure regulating system according to claim 2, it is characterised in that：The vacuum pressure
Regulating system is designed with the shielding quarantine measures of anti-electromagnetic interference, and between vavuum pump and PLC, PLC and temperature sensor it
Between, between PLC and pressure sensor be designed with photoelectric isolation module.
4. high-frequency induction wind-tunnel vacuum pressure regulating system according to claim 1, it is characterised in that：Also include frequency conversion to join
Number control module, the frequency conversion parameter for each vavuum pump to be set or changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720171242.6U CN206563644U (en) | 2017-02-24 | 2017-02-24 | High-frequency induction wind-tunnel vacuum pressure regulating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720171242.6U CN206563644U (en) | 2017-02-24 | 2017-02-24 | High-frequency induction wind-tunnel vacuum pressure regulating system |
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| CN206563644U true CN206563644U (en) | 2017-10-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768811A (en) * | 2017-02-24 | 2017-05-31 | 中国航天空气动力技术研究院 | High-frequency induction wind-tunnel vacuum pressure regulating system and pressure regulating method |
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2017
- 2017-02-24 CN CN201720171242.6U patent/CN206563644U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768811A (en) * | 2017-02-24 | 2017-05-31 | 中国航天空气动力技术研究院 | High-frequency induction wind-tunnel vacuum pressure regulating system and pressure regulating method |
| CN106768811B (en) * | 2017-02-24 | 2023-11-10 | 中国航天空气动力技术研究院 | High-frequency induction wind tunnel vacuum pressure regulating system and pressure regulating method |
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