CN206258328U - Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions - Google Patents
Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions Download PDFInfo
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- CN206258328U CN206258328U CN201621320319.3U CN201621320319U CN206258328U CN 206258328 U CN206258328 U CN 206258328U CN 201621320319 U CN201621320319 U CN 201621320319U CN 206258328 U CN206258328 U CN 206258328U
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Abstract
Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions, for carrying out explosion-proof performance experiment to ex electrical product to be tested, including low-temperature test chamber, plastic film cover, become incubator, plastic film cover is wrapped in ex electrical product outside and is placed in low-temperature test chamber, low-temperature test chamber is connected with refrigeration system, ex electrical product is connected to air inlet pipe and escaping pipe, air inlet pipe is connected with coil exchanger in turn by pipeline, gas cooler, gas-drying apparatus, mixed gas tank and air distribution system, the gas cooler, gas-drying apparatus, mixed gas tank and air distribution system are respectively positioned on low-temperature test chamber outside, the utility model passes through to be arranged on the gas cooler become in incubator, first time cooling is carried out to gas, then second cooling is carried out by the coil exchanger of low-temperature test chamber.
Description
Technical field
The utility model is related to explosion-proof performance testing field, more particularly, to the experimental rig under a kind of cryogenic conditions.
Background technology
Test for non transmission of an in ternal explosion generally is carried out to Flame-Proof Three-Phase Induction Motors, it is desirable to which the flameproof enclosure of its motor can expire
Performance requirement of both sufficient intensity and flame proof, strength character refers to that shell will have certain mechanical strength, can bear explosivity
The pressure that mixture explosion time is produced, it is impossible to which generation causes permanent deformation or the damage of composition surface and equipment；Explosion insulation performance refers to
The flame that explosive mixture explosion time is produced in shell during experiment, the performance of the housing exterior that will not ignite explosive mixture.
When motor is used in low temperature environment, because the density of explosive gas increases, the blast that unit volume is discharged
Energy is more so that the metal material mechanical strength of motor flameproof enclosure dies down, and these factors make the blast pressure of motor, maximum
Propagation of explosion experiment gap changes, so as to have influence on the explosion insulation performance of motor.Therefore, in order that Flame-Proof Three-Phase Induction Motors
Normally run under cryogenic conditions that can be below -40 DEG C, to carry out low temperature explosion insulation performance examination to it generally in Motor Production Test
Test.
Existing test method is motor test sample to be placed under natural low temperature environment or is carried out in freezer, in experiment
In, it is because the associate device for testing is more including gas concentration detection apparatus in experiment air distribution system, flammable gas cylinder, true
Empty pump, air accumulator, air compressor machine etc., one is inconvenient movement, and two is to need these associate devices to must simultaneously meet cryogenic conditions
The requirement for normally using down, and these associate devices that can meet use requirement under cryogenic conditions are commercially difficult to purchase.
Three is that the constant value to temperature is difficult to control in natural low temperature environment and freezer, therefore, experiment difficulty is larger, and directly
Have influence on the precision of motor test for non transmission of an in ternal explosion under cryogenic.
Utility model content
The purpose of this utility model is to provide test for non transmission of an in ternal explosion device under a kind of ex electrical product cryogenic conditions, is protected
The environment temperature that card is test for residing for ex electrical product is met the requirements, it is ensured that the temperature in ex electrical product is conformed to
Ask.
The technical solution of the utility model is：
Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions, for being carried out to ex electrical product to be tested
Explosion-proof performance is tested, including low-temperature test chamber, plastic film cover, change incubator, and plastic film cover is wrapped in outside ex electrical product
Side is simultaneously placed in low-temperature test chamber, and low-temperature test chamber is connected with refrigeration system, and ex electrical product is connected to air inlet pipe
And escaping pipe, air inlet pipe by pipeline be connected with turn coil exchanger, gas cooler, gas-drying apparatus, mixed gas tank and
Air distribution system, the gas cooler, gas-drying apparatus, mixed gas tank and air distribution system are respectively positioned on low-temperature test chamber outside, coil pipe
Formula heat exchanger is located in low-temperature test chamber, is become incubator and is located at low-temperature test chamber outside, is become incubator and is connected with refrigeration system, the gas
Body cooler is located at and becomes in incubator；Also include external temperature sensor and internal temperature sensor, external temperature sensor connection
There is sensor holder, external temperature sensor is fixed on ex electrical product by sensor holder, internal temperature sensor is installed
In ex electrical product.
Ex electrical product is fire-proof motor, and escaping pipe is connected at the rear end cap of fire-proof motor, internal temperature sensor
Install in the rear end cap of fire-proof motor.
Gas-drying apparatus also is located at becoming in incubator.
The plastic foil that plastic film cover is used is polyethylene film, and thickness is 0.18 ~ 0.22mm.
Two pressure sensors are separately mounted on the end cap at fire-proof motor two ends；Igniter plug igniting test position is arranged on
On the end cap of fire-proof motor.
The utility model passes through to be arranged on the gas cooler become in incubator, and first time cooling, Ran Houtong are carried out to gas
Crossing the coil exchanger of low-temperature test chamber carries out second cooling, and recycling is fixed on ex electrical product inner side and outer side
Temperature sensor accurately judges whether the temperature of ex electrical product inner side and outer side meets requirement, rather than as simply will in the past
The temperature of low-temperature test chamber judged as the temperature on the inside of ex electrical product, has just carried out explosion-proof test, this practicality
New process of the test more science, result of the test is also relatively reliable.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
As shown in figure 1, test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions, for to be tested explosion-proof
Electric product carries out explosion-proof performance experiment, and it includes low-temperature test chamber 9, plastic film cover 2, becomes incubator 4, and plastic film cover 2 is wrapped
It is rolled in ex electrical product outside and is placed in low-temperature test chamber 9, in the present embodiment, ex electrical product is fire-proof motor 1,
The plastic foil that plastic film cover 2 is used is polyethylene film, and thickness is 0.18 ~ 0.22mm.Low-temperature test chamber 1 is connected with refrigeration system
System, ex electrical product is connected to air inlet pipe 12 and escaping pipe 13, and escaping pipe 13 is connected to the rear end cap of fire-proof motor 1
Place.
Air inlet pipe 12 is connected with coil exchanger 3 in turn by pipeline（Prior art, coiled radiating）, gas cooling
Device 5, gas-drying apparatus 6, mixed gas tank 7 and air distribution system 8, gas cooler 5, gas dry 6 devices, mixed gas tank 7 and air distribution system 8
The outside of low-temperature test chamber 9 is respectively positioned on, coil exchanger 3 is located in low-temperature test chamber 9, becomes incubator 4 and be located at low-temperature test chamber 9
Outside, becomes incubator 4 and is connected with refrigeration system, and gas cooler 5 is located at and becomes in incubator 4；Gas-drying apparatus 6 can also be located at alternating temperature
In case 4.The reason for gas cooler 5 is not placed on low-temperature test chamber 9 be：There is blower fan on gas cooler 5, electric fire may be produced
Flower, and low-temperature test chamber 9 may have the explosive gas of aggregation, can cause blast.
The utility model also includes external temperature sensor 10 and internal temperature sensor 11, and external temperature sensor 10 connects
Sensor holder is connected to, external temperature sensor 10 is fixed on fire-proof motor 1 by sensor holder（The various modes such as punching）
On fire-proof motor 1, internal temperature sensor 11 is installed in fire-proof motor 1（In rear end cap）.
At the trial, two pressure sensors are separately mounted on the end cap at the two ends of fire-proof motor 1；Igniter plug igniting test
Position should be arranged on the position for being conducive to producing maximum explosion pressure, be rule of thumb selected on the end cap of fire-proof motor 1；Pressure
Sensor test point position should be arranged on the position for being conducive to measure maximum explosion pressure；The selection of test point can be according to examination
The complexity for testing model machine thinks the several points of local multiselect there may be highest blast pressure in subjectivity, and each flame proof cavity is extremely
A pressure tap is chosen less,（Inside cavity at least chooses two pressure taps, such as motor main cavity if any rotary part）.
During low-temperature test, first turn on refrigeration system and lower the temperature to becoming incubator 4, low-temperature test chamber 9, drop to default phase
Same temperature, external temperature sensor 10 is fixed on fire-proof motor 1, and fire-proof motor 1 puts plastic film cover 2, internal temperature
Degree sensor 11 is installed in the rear end cap of fire-proof motor 1.Gas cooler 5, gas-drying apparatus 6, mixed gas tank 7 and air distribution system 8,
Air distribution system 8 carries out distribution as requested, and gas then delivered into mixed gas tank 7, then sends into gas after being dried through gas-drying apparatus 6
Body cooler 5, because gas cooler 5 is constantly in low temperature environment, becomes the temperature environment and the phase of low-temperature test chamber 9 of incubator 4
Together, gas is cooled down by gas cooler 5, enters into the coil exchanger 3 of low-temperature test chamber 9, because coil exchanger 3
Also exchanged heat with low-temperature test chamber 9 always, so the temperature that can be further ensured that into fire-proof motor 1 is satisfactory,
Again by the measurement of internal temperature sensor 10, judge whether the temperature in now fire-proof motor 1 meets the requirements, with reference to outer
The measured value of portion's temperature sensor 11 judges whether that explosion bulge test can be carried out.
Claims (5)
1. test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions, for preventing ex electrical product to be tested
Quick-fried performance test, it is characterised in that：Including low-temperature test chamber, plastic film cover, become incubator, plastic film cover is wrapped in anti-explosion electric
Gas product outside is simultaneously placed in low-temperature test chamber, and low-temperature test chamber is connected with refrigeration system, and ex electrical product is connected respectively
Have air inlet pipe and an escaping pipe, air inlet pipe by pipeline be connected with turn coil exchanger, gas cooler, gas-drying apparatus,
Mixed gas tank and air distribution system, the gas cooler, gas-drying apparatus, mixed gas tank and air distribution system are respectively positioned on outside low-temperature test chamber
Side, coil exchanger is located in low-temperature test chamber, is become incubator and is located at low-temperature test chamber outside, is become incubator and is connected with refrigeration system
System, the gas cooler is located at and becomes in incubator；Also include external temperature sensor and internal temperature sensor, external temperature is passed
Sensor is connected with sensor holder, and external temperature sensor is fixed on ex electrical product by sensor holder, and internal temperature is passed
Sensor is installed in ex electrical product.
2. test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions according to claim 1, it is characterised in that：It is anti-
Quick-fried electric product is fire-proof motor, and escaping pipe is connected at the rear end cap of fire-proof motor, and internal temperature sensor installs anti-explosion electric
In the rear end cap of machine.
3. test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions according to claim 1, it is characterised in that：Gas
Gas dryer also is located at becoming in incubator.
4. test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions according to claim 1, it is characterised in that：Modeling
The plastic foil that material film hood is used is polyethylene film, and thickness is 0.18 ~ 0.22mm.
5. test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions according to claim 1, it is characterised in that：Two
Individual pressure sensor is separately mounted on the end cap at fire-proof motor two ends；Igniter plug igniting test position is arranged on fire-proof motor
On end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621320319.3U CN206258328U (en) | 2016-12-05 | 2016-12-05 | Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621320319.3U CN206258328U (en) | 2016-12-05 | 2016-12-05 | Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206258328U true CN206258328U (en) | 2017-06-16 |
Family
ID=59026758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621320319.3U Active CN206258328U (en) | 2016-12-05 | 2016-12-05 | Test for non transmission of an in ternal explosion device under ex electrical product cryogenic conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206258328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670733A (en) * | 2021-07-15 | 2021-11-19 | 安标国家矿用产品安全标志中心有限公司 | Permanent magnet electric roller reference pressure measuring device and measuring method |
-
2016
- 2016-12-05 CN CN201621320319.3U patent/CN206258328U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670733A (en) * | 2021-07-15 | 2021-11-19 | 安标国家矿用产品安全标志中心有限公司 | Permanent magnet electric roller reference pressure measuring device and measuring method |
| CN113670733B (en) * | 2021-07-15 | 2023-09-12 | 安标国家矿用产品安全标志中心有限公司 | Permanent magnet electric roller reference pressure measuring device and measuring method |
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