CN206549659U - Explosion-proof type high-low temperature test chamber - Google Patents
Explosion-proof type high-low temperature test chamber Download PDFInfo
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- CN206549659U CN206549659U CN201720026079.4U CN201720026079U CN206549659U CN 206549659 U CN206549659 U CN 206549659U CN 201720026079 U CN201720026079 U CN 201720026079U CN 206549659 U CN206549659 U CN 206549659U
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- explosion
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Abstract
The utility model is related to a kind of explosion-proof type high-low temperature test chamber, with anti-explosion sample room and the Electric Appliance Cabinet that anti-explosion sample room powers and controlled that is used for for being installed on anti-explosion sample room side；The anti-explosion sample room is made up of casing with the chamber door for being articulated with casing side；Cabin is installed provided with refrigeration plant below the casing；The Electric Appliance Cabinet is made up of cabinet door and cabinet；A bracket is horizontally installed with by installing adjusting bracket in the casing, cabinets cavity top left and right is provided with two circulation pneumatic fans, and casing top is provided with the explosion venting valve and blast pipe connected with cabinets cavity；The second pneumatic fan is provided with the blast pipe；The method that the utility model is designed by structural shielding and electrical explosion proof, makes the sample room for being previously described for combustible gas sensor thermocycling meet related requirement of explosion proof, so as to eliminate the gas burst hidden danger of checkout procedure.
Description
Technical field
The utility model is related to a kind of mining communication monitoring equipment detection inspection technology field, more particularly to a kind of explosion-proof type
High-low temperature test chamber.
Background technology
The error under the progress high/low temperature condition of work (most representative with methane transducer) to combustible gas sensor
, it is necessary to be passed through standard gas sample to sample during measure, and these gas samples are that the spy of subject sensor is blown into the way of natural diffuseness
Head, these gas samples will certainly be diffused into chamber inner space, so as to produce a closing for explosion risk persistently occur
Place.According to GB3836.14-2014 regulation, the equipment installed and used in such closing space must possess corresponding etc.
The requirement of explosion proof of level.
Utility model content
The purpose of this utility model is that the defect for overcoming prior art to exist is applied to CH there is provided one kind4Explosive gas
The thermocycling environment of environment, to meet different CH4To the thermocycling of the products such as material or electrical type under concentration environment,
The method designed by structural shielding and electrical explosion proof, eliminates the explosion-proof type thermocycling of the gas burst hidden danger of checkout procedure
Case.
Realizing the technical scheme of the utility model purpose is：A kind of explosion-proof type high-low temperature test chamber, with anti-explosion sample room
With the Electric Appliance Cabinet that anti-explosion sample room powers and controlled that is used for for being installed on anti-explosion sample room side；The anti-explosion sample room is by casing
Constituted with the chamber door for being articulated with casing side；Cabin is installed provided with refrigeration plant below the casing；The Electric Appliance Cabinet by cabinet door and
Cabinet is constituted；Passed through in the casing by installing adjusting bracket and being horizontally installed with to be provided with the top of a bracket, cabinets cavity
Essential safety LED drive circuit is connected to the LED for not possessing ignition ability of transformer, and set two of left and right pass through
Air motor driving air be discharged into body side Electric Appliance Cabinet circulation pneumatic fan, casing outside top be provided with casing
Heating tube is installed, maximum surface temperature when heating tube works is less than on the explosion venting valve and blast pipe of chamber connection, cabinet wall
The dangerous temperature of explosive gas atmosphere；It is connected with the blast pipe inside pneumatic operated valve, and blast pipe and is provided with the second aerodynamic wind
Machine.
The refrigeration plant, which is installed, has refrigeration compressor, electric fan and pneumatic fan in cabin；The refrigerant compression
The high-pressure side of machine connects condenser by refrigerant tubing, and low-pressure end connects the evaporation in anti-explosion sample room by refrigerant tubing
Device；The electric fan is arranged on condenser, and when electric fan works, the system for flowing through condenser is taken away by the air of flowing
Heat in cryogen；The electric fan is arranged on the admission line of connection anti-explosion sample room and external environment condition, admission line
The valve of cylinder promotion is inside installed, when valve and pneumatic fan obtain compressed air supply, pneumatic fan drives surrounding air
It is blown into anti-explosion sample room.
Controller is provided with the Electric Appliance Cabinet, be connected solenoid valve block with controller output end, and it is defeated with controller
Enter end to be connected the first micro differential pressure switch, the second micro differential pressure switch；The controller has been also connected with the pressure on refrigerant tubing
Switch；The first magnetic valve in the solenoid valve block is connected with the compressed air input of 3 circulation pneumatic fans, the second electromagnetism
Valve drives pneumatic fan to provide air inlet and pressure supplement for casing；Four output ends of the controller pass through contactor respectively
Heating tube group in compressor and three road casees is connected to relay group.
Casing top corner and bottom corner described in above-mentioned technical proposal are separately installed with for supporting plate in detection case body
Side and the first essential safe type CH of lower section methane concentration4Concentration sensor and the second essential safe type CH4Concentration sensor；Institute
State the first essential safe type CH4One end of concentration sensor and the second essential safe type CH4One end of concentration sensor connect respectively with
The first connected intrinsic safety power module of AC220V power supplys and the second intrinsic safety electric source module, the first essential safe type CH4Concentration is sensed
The other end of device and the second essential safe type CH4The concentration sensor other end connects intrinsic safety signal acquisition with isolating communication module
Input；The intrinsic safety signal acquisition passes through with isolating communication module by TCP/IP and compressor controller both-way communication
RS485 lines and casing internal controller both-way communication.
It is provided with Electric Appliance Cabinet described in above-mentioned technical proposal by RS485 buses and gas mass flow controller two-way
News；The gas mass flow controller has two, and the input of one of gas mass flow controller passes through first
Pressure-reducing valve is connected to the first gas cylinder, and the input of another gas mass flow controller is connected to second by the second pressure-reducing valve
Gas cylinder output end, described two-way gas is connected on the inside of the valve for the admission line being placed in anti-explosion sample room.
Casing top corner and bottom corner described in above-mentioned technical proposal are separately installed with for supporting plate in detection case body
Side and the temperature sensor of lower section temperature；The temperature sensor connects intrinsic safety signal acquisition with isolating the input of communication module.
Adjusting bracket is installed described in above-mentioned technical proposal to be included being vertically fixed on casing left and right sides by fastener
Adjusting rod and bearing support；The through hole of some equidistantly distributeds is offered on each adjusting rod from top to bottom；The bearing support is in " L "
Shape, and there are two to be used to hang over the crotch in the through hole of two adjusting rods of homonymy for bearing support upper end.
Cabinet described in above-mentioned technical proposal is provided with the touch display screen that is electrically connected with Switching Power Supply and defeated with controller
Enter the connected button groups in end；The touch display screen is connected with compressor controller both-way communication.
Offered described in above-mentioned technical proposal on chamber door and chamber door handle is fixed with observation window, and chamber door.
Described in above-mentioned technical proposal some heat emission holes are offered in the one side of casing correspondence chamber door.
After adopting the above technical scheme, the utility model has following positive effect：
(1) method that the utility model is designed by structural shielding and electrical explosion proof, makes to be previously described for imflammable gas
Sensor thermocycling case body special meets related requirement of explosion proof, so as to eliminate the gas burst hidden danger of checkout procedure.
(2) adjusting bracket of the present utility model of installing includes being vertically fixed on the tune of casing left and right sides by fastener
Pole and bearing support；The through hole of some equidistantly distributeds is offered on each adjusting rod from top to bottom；The bearing support is in " L " shape,
And there are two to be used to hang over the crotch in the through hole of two adjusting rods of homonymy for bearing support upper end；Can be according to demand to bearing support
Position is adjusted, so as to meet the experiment demand of the product of different size.
(3) performance indications that the utility model can reach are, dischargeable capacity about 0.5m3；Temperature range：- 10~80 DEG C；
Temperature deviation：±1℃；The uniformity：± 1 DEG C (0~80 DEG C), ± 2 DEG C (- 10~0 DEG C)；Fluctuation degree：±0.5℃；Programming rate：
Most fast 2 DEG C/min；Cooling rate：Most fast 2 DEG C/min；Methane concentration control range：0~100%CH4；2 road essential safe type frequencies
Rate input interface (200Hz~1000Hz).
Brief description of the drawings
In order that content of the present utility model is easier to be clearly understood, below according to specific embodiment and with reference to attached
Figure, is described in further detail to the utility model, wherein
Fig. 1 is dimensional structure diagram of the present utility model；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is Fig. 2 left view；
Fig. 4 is part of module schematic diagram of the present utility model；
Fig. 5 is circuit theory diagrams of the present utility model；
Embodiment
(embodiment 1)
See Fig. 1 to Fig. 5, the utility model have anti-explosion sample room 1 and be installed on the side of anti-explosion sample room 1 be used for it is explosion-proof
The Electric Appliance Cabinet 2 that sample room 1 powers and controlled；Anti-explosion sample room 1 is made up of casing with the chamber door 4 for being articulated with casing side；Casing
Cabin 3 is installed provided with refrigeration plant in lower section；Electric Appliance Cabinet 2 is made up of cabinet door 5 and cabinet；Pacified in casing by installing adjusting bracket level
Equipped with a bracket 6, it is provided with the top of cabinets cavity and not possessing a little for transformer 50 is connected to by intrinsic safety LED drive circuit 49
Left and right is provided with two air driven by air motor and is discharged into body side at the top of the LED 48 of combustion ability, cabinets cavity
Electric Appliance Cabinet circulation pneumatic fan 7, casing top is provided with the explosion venting valve 8 and blast pipe 9 that are connected with cabinets cavity；Cabinet wall
On heating tube is installed；It is connected with blast pipe inside pneumatic operated valve, and blast pipe and is provided with the second pneumatic fan 10.
Pneumatic fan refrigeration plant, which is installed, has refrigeration compressor 14, electric fan 11 and pneumatic fan 17 in cabin 3；System
The high-pressure side of cold compressor 14 connects condenser 12 by refrigerant tubing 13, and low-pressure end connects explosion-proof by refrigerant tubing 13
Evaporator in sample room 1；Electric fan 17 is arranged on condenser 12, when electric fan 17 works, passes through the air of flowing
Take away the heat in the refrigerant for flowing through condenser 12；Electric fan 17 is arranged on connection anti-explosion sample room 1 and external environment condition
On admission line 15, the valve of the promotion of cylinder 16 is installed, valve and pneumatic fan 17 obtain compressed air in admission line 15
During supply, pneumatic fan 17 drives surrounding air to be blown into anti-explosion sample room 1.
Provided with solenoid valve block 19, micro differential pressure switch and the gas mass flow control electrically connected with circuit board 18 in Electric Appliance Cabinet 2
Device 21 processed.Provided with the solenoid valve block 19 that is connected with the output end of casing internal controller in Electric Appliance Cabinet 2, and casing internal controller
Input is connected the first micro differential pressure switch and the second micro differential pressure switch；First micro differential pressure switch 22 described in refrigeration compressor 14
One end is connected with the first magnetic valve in solenoid valve block 19, another input for being connected to casing internal controller, and simultaneously with
One end of two micro differential pressure switchs 23 is connected；The other end of second micro differential pressure switch 23 and the 3rd electromagnetism in solenoid valve block 19
Valve is connected；The input and the second pneumatic fan of the second magnetic valve simultaneously with circulation pneumatic fan 7 in the solenoid valve block 19
10 input is connected, and the 4th solenoid-driven pneumatic fan 17 provides air inlet and pressure supplement for casing；The compressor
Controller 32 is connected to three-phase four-wire power by phase sequence relay 33, and two output ends of compressor controller 32 are respectively by connecing
Tentaculum 34 and relay group 35 are connected to heating tube 36 in refrigeration compressor 14 and case.
In the Electric Appliance Cabinet provided with controller 32, be connected solenoid valve block 19 with the output end of controller 32, and with control
The input of device 32 is connected the first micro differential pressure switch 22, the second micro differential pressure switch 23；The controller 32 has been also connected with refrigeration
Pressure switch on agent pipeline 13；The compressed air of the first magnetic valve and 3 circulation pneumatic fans 7 in the solenoid valve block 19
Input is connected, and the second solenoid-driven pneumatic fan 17 provides air inlet and pressure supplement for casing；The controller 32 leads to
Cross phase sequence relay 33 and be connected to three-phase four-wire power, four output ends of controller 32 pass through contactor 34 and relay group respectively
35 are connected to heating tube group 36 in the road case of refrigeration compressor 14 and three.
The casing top corner and bottom corner are separately installed with for temperature above and below supporting plate 6 in detection case body
The first essential safe type CH4The essential safe type CH of concentration sensor 37 and second4Concentration sensor 38；The first essence peace
Holotype CH4One end of concentration sensor 37 and the second essential safe type CH4One end of concentration sensor 38 connects and AC220V electricity respectively
The first connected intrinsic safety power module 39 of source and the second intrinsic safety electric source module 40, the first essential safe type CH4Concentration sensor 37
The other end and the second essential safe type CH4The other end of concentration sensor 38 connects intrinsic safety signal acquisition with isolating communication module 41
Input；The intrinsic safety signal acquisition with isolating communication module 41 by TCP/IP and the both-way communication of compressor controller 32,
And pass through RS485 lines and the both-way communication of casing internal controller 42.Standby joint 52 is connected with casing internal controller 42.
It is provided with the Electric Appliance Cabinet 2 by RS485 buses and the both-way communication of gas mass flow controller 21；The gas
Mass flow controller 21 has two, and the input of one of gas mass flow controller 21 passes through the first pressure-reducing valve 43
The first gas cylinder 44 is connected to, the input of another gas mass flow controller 21 is connected to second by the second pressure-reducing valve 45
The output end of gas cylinder 46, described two-way gas is connected on the inside of the valve for the admission line 15 being placed in anti-explosion sample room 1.
The casing top corner and bottom corner are separately installed with for temperature above and below supporting plate in detection case body
Temperature sensor 47；The temperature sensor connects intrinsic safety signal acquisition with isolating the input of communication module.Regulation branch is installed
Frame includes the adjusting rod 24 and bearing support 25 that casing left and right sides are vertically fixed on by fastener；From upper on each adjusting rod 24
Down offer the through hole 26 of some equidistantly distributeds；Bearing support 25 is in " L " shape, and there are the upper end of bearing support 25 two to be used to hang
Crotch in the through hole 26 of two adjusting rods 24 of homonymy.
Cabinet is provided with the display screen 27 electrically connected with circuit board 18 and button groups 28.
Offered on chamber door 4 and chamber door handle 29 is fixed with observation window 30, and chamber door 4.
Some heat emission holes are offered in the one side of casing correspondence chamber door 4.
Casing top is provided with lamp 31.
Operation principle of the present utility model is：
1、CH4Gas concentration is controlled
Set up on the touchscreen after concentration value, arranges value is to transmit into PLC corresponding variable storage area, is controlled by PLC
Opens solenoid valve processed, starts air motor, drives the impeller of the circulating fan in case, and flow control valve is controlled by RS485, past
The test space of explosion-proof test case is slowly injected into CH4Gas.
Essential safe type gas concentration sensor in test space by the acquired circuit of the gas concentration value measured every
From rear, transmitted by RS485 to PLC, PLC and be compared this value and arranges value.
When measured value is less than arranges value, continue to keep flow control valve to open.
When measured value is more than arranges value during certain amplitude, of short duration unlatching air inlet valve and air bleeding valve, dilution test
CH in space4Concentration.
When measured value is fallen after rise to less than arranges value certain amplitude, flow control valve is again turned on, so circulation.
When experiment is finished, after touch-screen control, air inlet valve and air bleeding valve are opened in programme-control, start dilution
CH4Concentration.
2nd, temperature control
Set up on the touchscreen after concentration value, arranges value is to transmit into PLC corresponding variable storage area.Program starts
After operation, start air motor first, carry out air circulation in case.
Essential safe type gas concentration sensor in test space by the acquired circuit of the gas concentration value measured every
From rear, transmitted by RS485 to PLC, temperature will be set to be compared with original ambient temperature.
When arranges value is more than original ambient temperature certain amplitude, worked using pure heating mode, as the PID work(built in PLC
The solid-state relay device for linking heater can be controlled, so as to control the work of heating tube, realize the constant temperature control of high temperature section
System.
When arranges value is close to or smaller than original ambient temperature, while starting compression refrigeration and electrothermal tube heating, as built in PLC
PID functions to heating be controlled, realize the thermostatic control of low-temperature zone.
Temperature control and gas concentration control can be carried out simultaneously, to meet the requirement of test mission.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step is described in detail, be should be understood that and be the foregoing is only specific embodiment of the utility model, is not limited to this
Utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements done etc. all should be wrapped
It is contained within protection domain of the present utility model.
Claims (8)
1. a kind of explosion-proof type high-low temperature test chamber, with anti-explosion sample room and be installed on anti-explosion sample room side be used for explosion-proof sample
The Electric Appliance Cabinet that product room powers and controlled；The anti-explosion sample room is made up of casing with the chamber door for being articulated with casing side；The case
Cabin is installed provided with refrigeration plant below body；The Electric Appliance Cabinet is made up of cabinet door and cabinet；It is characterized in that：Pass through in the casing
Adjusting bracket is installed and is horizontally installed with a bracket, cabinets cavity top is provided with to be connected by essential safety LED drive circuit
It is discharged into the LED for not possessing ignition ability of transformer, and two air driven by air motor that left and right is set
The circulation pneumatic fan of the Electric Appliance Cabinet of body side, casing outside top is provided with the explosion venting valve connected with cabinets cavity and exhaust
Heating tube is installed, maximum surface temperature when heating tube works is less than the danger of explosive gas atmosphere on pipe, cabinet wall
Temperature；It is connected with the blast pipe inside pneumatic operated valve, and blast pipe and is provided with the second pneumatic fan；
The refrigeration plant, which is installed, has refrigeration compressor, electric fan and pneumatic fan in cabin；The refrigeration compressor
High-pressure side connects condenser by refrigerant tubing, and low-pressure end connects the evaporator in anti-explosion sample room by refrigerant tubing；
The electric fan is arranged on condenser, and when electric fan works, the refrigeration for flowing through condenser is taken away by the air of flowing
Heat in agent；The electric fan is arranged on the admission line of connection anti-explosion sample room and external environment condition, in admission line
The valve of cylinder promotion is installed, when valve and pneumatic fan obtain compressed air supply, pneumatic fan drives surrounding air to blow
Enter anti-explosion sample room；
Controller is provided with the Electric Appliance Cabinet, be connected solenoid valve block with controller output end, and the input with controller
Be connected the first micro differential pressure switch, the second micro differential pressure switch；The controller has been also connected with the pressure switch on refrigerant tubing；
The first magnetic valve in the solenoid valve block is connected with the compressed air input of 3 circulation pneumatic fans, and the second magnetic valve drives
Dynamic pneumatic fan provides air inlet and pressure supplement for casing；Four output ends of the controller respectively by contactor and after
Electrical equipment group is connected to heating tube group in compressor and three road casees.
2. explosion-proof type high-low temperature test chamber according to claim 1, it is characterised in that：The casing top corner and bottom
Corner be separately installed with detection case body above and below supporting plate methane concentration the first essential safe type CH4Concentration is sensed
Device and the second essential safe type CH4Concentration sensor；The first essential safe type CH4One end of concentration sensor and second
The safety-type CH of matter4One end of concentration sensor connects the first intrinsic safety power module and the second intrinsic safety being connected with AC220V power supplys respectively
Power module, the first essential safe type CH4The other end of concentration sensor and the second essential safe type CH4Concentration sensor is another
End connects intrinsic safety signal acquisition with isolating the input of communication module；The intrinsic safety signal acquisition passes through with isolating communication module
TCP/IP and compressor controller both-way communication, and pass through RS485 lines and casing internal controller both-way communication.
3. explosion-proof type high-low temperature test chamber according to claim 2, it is characterised in that：It is provided with and passes through in the Electric Appliance Cabinet
RS485 buses and gas mass flow controller both-way communication；The gas mass flow controller has two, one of them
The input of gas mass flow controller is connected to the first gas cylinder by the first pressure-reducing valve, the control of another gas mass flow
The input of device is connected to the second gas cylinder output end by the second pressure-reducing valve, and two-way gas, which is connected to, to be placed in anti-explosion sample room
On the inside of the valve of admission line.
4. explosion-proof type high-low temperature test chamber according to claim 3, it is characterised in that：The casing top corner and bottom
Corner be separately installed with detection case body above and below supporting plate temperature temperature sensor；The temperature sensor connects this
Pacify input of the signal acquisition with isolating communication module.
5. explosion-proof type high-low temperature test chamber according to claim 1, it is characterised in that：The installation adjusting bracket includes logical
Cross adjusting rod and bearing support that fastener is vertically fixed on casing left and right sides；Offered from top to bottom on each adjusting rod some
The through hole of equidistantly distributed；The bearing support is in " L " shape, and there are two to be used to hang over two adjusting rods of homonymy for bearing support upper end
Through hole in crotch.
6. explosion-proof type high-low temperature test chamber according to claim 1, it is characterised in that：The cabinet is provided with and switch electricity
The touch display screen of source module electrical connection and the button groups being connected with controller input；The touch display screen and compressor
Controller both-way communication is connected.
7. explosion-proof type high-low temperature test chamber according to claim 1, it is characterised in that：Observation is offered on the chamber door
Chamber door handle is fixed with window, and chamber door.
8. explosion-proof type high-low temperature test chamber according to claim 1, it is characterised in that：The one side of the casing correspondence chamber door
On offer some heat emission holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026079.4U CN206549659U (en) | 2017-01-11 | 2017-01-11 | Explosion-proof type high-low temperature test chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026079.4U CN206549659U (en) | 2017-01-11 | 2017-01-11 | Explosion-proof type high-low temperature test chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206549659U true CN206549659U (en) | 2017-10-13 |
Family
ID=60359493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720026079.4U Active CN206549659U (en) | 2017-01-11 | 2017-01-11 | Explosion-proof type high-low temperature test chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206549659U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732834A (en) * | 2017-01-11 | 2017-05-31 | 天地（常州）自动化股份有限公司 | Explosion-proof type high-low temperature test chamber |
| CN114362479A (en) * | 2021-12-17 | 2022-04-15 | 中车永济电机有限公司 | Explosion-proof method suitable for locomotive converter cabinet body |
-
2017
- 2017-01-11 CN CN201720026079.4U patent/CN206549659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732834A (en) * | 2017-01-11 | 2017-05-31 | 天地（常州）自动化股份有限公司 | Explosion-proof type high-low temperature test chamber |
| CN114362479A (en) * | 2021-12-17 | 2022-04-15 | 中车永济电机有限公司 | Explosion-proof method suitable for locomotive converter cabinet body |
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