CN203054187U - Intrinsic safety spark test device - Google Patents
Intrinsic safety spark test device Download PDFInfo
- Publication number
- CN203054187U CN203054187U CN 201320063374 CN201320063374U CN203054187U CN 203054187 U CN203054187 U CN 203054187U CN 201320063374 CN201320063374 CN 201320063374 CN 201320063374 U CN201320063374 U CN 201320063374U CN 203054187 U CN203054187 U CN 203054187U
- Authority
- CN
- China
- Prior art keywords
- test device
- valve
- spark test
- gas
- spark
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 102
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 19
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 10
- 239000010937 tungsten Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 71
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 34
- 239000001301 oxygen Substances 0.000 claims description 34
- 229910052760 oxygen Inorganic materials 0.000 claims description 34
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 29
- 239000001257 hydrogen Substances 0.000 claims description 29
- 229910052739 hydrogen Inorganic materials 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 150000001661 cadmium Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 239000003570 air Substances 0.000 description 64
- 150000002431 hydrogen Chemical class 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007707 calorimetry Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Flow Control (AREA)
Abstract
The utility model discloses an intrinsic safety spark test device, and relates to the field of intrinsic safety control. The intrinsic safety spark test device comprises flow controllers, wherein gas outlet ends of gas inlet valves are provided with gas flowmeters; the gas flowmeter is used for detecting an input gas flow of the spark test device and sending a result to the flow controller; the flow controller is used for controlling operation of the gas inlet valve according to the input gas flow of the spark test device and a set gas flow. The intrinsic safety spark test device of the utility model can display states of valves and motors (pumps) in real time in the whole test process, and can display key data such as a rotating speed of a dragging motor, the frequency of contacts between a tungsten filament and a cadmium disc, a pressure of the spark test device, a voltage of a test circuit, a current of the test circuit in real time.
Description
Technical field
The utility model relates to essential safety control field, particularly relates to a kind of the utility model and relates to a kind of essential safety spark test device.
Background technology
Essential safety spark test device is the basic equipment of research circuit essential safety performance, is mainly used in the essential safety performance of proof scheme.
There is following problem in essential safety spark test device in the prior art:
1, used damp still rests on the level of artificial distribution, unavoidably can be under artificial or the effect of environmental factor and produce deviation, thus influence time and the quality of whole checkout procedure.
2, can only carry out the spark ignition check to the circuit of 0～3A.
The utility model content
Because the above-mentioned defective of prior art, the utility model provides a kind of essential safety spark test device.
The utility model can show the state of each valve in the whole checkout procedure, motor (pump) in real time, shows the critical data such as pressure, checking circuit voltage, checking circuit electric current of frequency of exposure, the spark test device of dragging motor rotating speed, tungsten filament and cadmium dish in real time.
In order to realize above-mentioned purpose of the present utility model, the utility model provides a kind of essential safety spark test device, comprise spark test device (1), servomotor (2), air intake valve (4) and the valve of giving vent to anger (12,13), be provided with the utmost point in the wherein said spark test device (1) and hold (1-1) and cadmium dish (1-2), and the downside that the described utmost point is held (1-1) is provided with tungsten filament (1-3); Described servomotor (2) connects this utmost point respectively and holds (1-1) and cadmium dish (1-2), is used for driving this utmost point and holds (1-1) and cadmium dish (1-2) rotation when check, makes this utmost point hold the tungsten filament of (1-1) downside (1-3) and contacts with this cadmium dish (1-2);
Described air intake valve (4) and this spark test device (1) internal communication, the inlet end of described air outlet valve (12,13) and this spark test device (1) internal communication;
Also comprise flow controller, and the outlet side of described air intake valve (4) is provided with gas meter (5), wherein said gas meter is for detection of the input gas flow of this spark test device (1) and send to this flow controller; Described flow controller is used for controlling this air intake valve (4) work according to the input gas flow of this spark test device (1) with the setting gas flow.
Described essential safety spark test device, preferably, also comprise industrial computer, and the outlet side of described air outlet valve (12,13) is provided with this gas concentration sensor (15,16), and wherein said gas concentration sensor (15,16) is for detection of the output gas concentration of this spark test device (1) and send to this industrial computer; Described industrial computer is used for controlling this air intake valve (4) work according to the output gas concentration of this spark test device (1) with the setting gas concentration.
Described essential safety spark test device, preferred, the utmost point is held first output terminal that (1-1) connects circuit under test in described spark test device (1), and cadmium dish (1-2) connects second output terminal of this circuit under test.
Described essential safety spark test device, preferably, also comprise air inlet main valve (6), air inlet normally open valve (7), blowdown valve (8) and spark arrester (15), first end of wherein said air inlet main valve (6) connects this air inlet normally open valve (7), gas meter (5) respectively, and second end of described air inlet main valve (6) connects this blowdown valve (8) and passes through this spark arrester (15) and this spark test device (1) internal communication.
Described essential safety spark test device, preferably, also comprise exhaust main valve (9), exhaust normally open valve (10), vacuum pumping valve (11) and vacuum pump (14), first end of wherein said exhaust main valve (9) and this spark test device (1) internal communication, second end of described exhaust main valve (9) connects this exhaust normally open valve (10) and air outlet valve (12,13) respectively, and connects this vacuum pump (14) by this vacuum pumping valve (11).
Described essential safety spark test device, preferred, also comprise by-pass valve (16), wherein said air outlet valve (12,13) is connected with air inlet main valve (6) by this by-pass valve (16).
Described essential safety spark test device, preferably, also comprise tested circuit (3), Calibration Circuit (17) and switch (18), wherein said servomotor (2) is connected the transmission circuit data with tested circuit (3), be connected switch between Calibration Circuit (17) and the tested circuit (18), when being used for circuit data that the circuit data that transmits when tested circuit (18) and Calibration Circuit (17) preset and not matching, changed by switch (18).
Described essential safety spark test device, preferred, described air intake valve (4) comprises hydrogen valve, oxygen valve and air valve, and described gas meter (5) comprises hydrogen flowmeter, oxygen flow meter and air flowmeter.
Described essential safety spark test device, preferred, described gas concentration sensor (15,16) comprises hydrogen gas concentration sensor (15) and oxygen concentration sensor (16).
The beneficial effects of the utility model are: the utility model can show the state of each valve in the whole checkout procedure, motor (pump) in real time, shows the critical data such as pressure, checking circuit voltage, checking circuit electric current of frequency of exposure, the spark test device of dragging motor rotating speed, tungsten filament and cadmium dish in real time.
Description of drawings
Fig. 1 is the utility model essential safety spark test device automatic distributing system schematic;
Fig. 2 is the utility model essential safety spark test device dynamic flow diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Now develop a kind of novel essential safety spark test device, this device is a kind of full-automatic distribution essential safety performance checkout equipment in real time, and device mainly is made up of spark ignition device and automated gas divider.Device adopts hardware devices such as high-precision sensor, digital display controller, mass flowmeter, flow quantity control instrument, air intake valve, Programmable Logic Controller, industrial control computer, be equipped with advanced configuration monitoring and process control software technology, can test to various essential safety performances mining, station-service electrical apparatus for explosive atmospheres intrinsically safe circuit.
Formed by various digital controllers, computer display, button, selector switch and pilot lamp etc.Control desk inside is made up of industrial computer, Programmable Logic Controller, various sensor, AC servo motor and controller, inductance box, solenoid valve, spark arrester, mass flowmeter, air intake valve, Switching Power Supply, stabilized voltage supply and various low-voltage electrical apparatuses etc.
Automated gas divider adopts computing machine to carry out intelligent distribution, the distribution principle is the mass rate mixing method, form the upper and lower computer flow control system by industrial computer and flow quantity control instrument, gather the parameter of three kinds of gas source and flow amount sensors, after the flow control system arithmetical unit is handled, drive air intake valve and control the flow of each gas circuit air intake valve, reach the purpose of the required allocation ratio of all gases, the automatic distributing theory diagram as shown in Figure 1.
Flow sensor adopts the mass rate (need not the temperature and pressure compensation) of kapillary heat transfer temperature difference calorimetry principle measurement gas.Sensor is added flow signal that thermal bridge records to be sent into amplifier and amplifies, flow measurement voltage after the amplification sends into flow quantity control instrument and setting voltage compares, go control after again difference signal being amplified, control the flow that passes through by closed-loop control, and make it to equate with the flow of setting.The needed air-fuel mixture amount of each check is formed the upper and lower computer flow control system by hydrogen and oxygen concentration sensor and controller, industrial computer and flow quantity control instrument and is controlled, hydrogen and oxygen concentration sensor detect spark test device outlet hydrogen and oxygen concentration in real time, after the hydrogen in the spark test device and oxygen concentration reach setting, industrial computer sends signal by flow quantity control instrument and gives, turn-off source of the gas, this time distribution is finished.
By industrial computer control hydrogen source gas, oxygen source and air source of the gas, and hydrogen gas outlet and oxygen gas outlet; Concrete parts are connected to, the hydrogen source gas of output is regulated by hydrogen valve 02, hydrogen source gas is carried out flow control by flow controller 01, by the flow sensor 03 record hydrogen flowing quantity numerical value that is connected on the flow controller 01, the hydrogen of default constant rate is put among the spark test device, controlled flow controller by industrial computer by (RS485) interface communication hydrogen source gas is carried out flow control.
The oxygen source of output is regulated by oxygen valve 05, oxygen source carries out flow control by flow controller 04, by the flow sensor 06 record oxygen flow numerical value that is connected on the flow controller 04, the oxygen of default constant rate is put among the spark test device, controlled flow controller by industrial computer by (RS485) interface communication oxygen source is carried out flow control.
The air source of the gas of output is regulated by air valve 08, the air source of the gas carries out flow control by flow controller 07, by the flow sensor 09 record air mass flow numerical value that is connected on the flow controller 07, the air of default constant rate is put among the spark test device, controlled flow controller by industrial computer by (RS485) interface communication the air source of the gas is carried out flow control.
After hydrogen, oxygen and the air of finishing by industrial computer configuration enters the spark test device, in the gas outlet of spark test device hydrogen gas concentration sensor and oxygen concentration sensor are set, whether the source of the gas concentration of measuring hydrogen source gas and oxygen source by hydrogen gas concentration sensor and oxygen concentration sensor reaches setting value, is shown the source of the gas concentration of hydrogen source gas and oxygen source respectively by (RS485) interface communication control density of hydrogen digital display instrument and oxygen concentration digital display instrument by industrial computer.
Its specific embodiment is as shown in Figure 2, the default data parameters of finishing between each circuit of Calibration Circuit, after finally finishing blast, circuit data parameter and the Calibration Circuit of tested circuit are compared, and debug the data parameters that tested circuit reaches Calibration Circuit by switch.
A kind of essential safety spark test device, comprise spark test device 1, servomotor 2, air intake valve 4 and the valve 12,13 of giving vent to anger, be provided with the utmost point in the wherein said spark test device 1 and hold 1-1 and cadmium dish 1-2, and the downside that the described utmost point is held 1-1 is provided with tungsten filament 1-3; Described servomotor 2 connects this utmost point respectively and holds 1-1 and cadmium dish 1-2, is used for driving this utmost point and holds 1-1 and cadmium dish 1-2 rotation when check, and the tungsten filament 1-3 that makes this utmost point hold the 1-1 downside contacts with this cadmium dish 1-2;
Described air intake valve 4 and this spark test device 1 internal communication, described air outlet valve 12,13 inlet end and this spark test device 1 internal communication;
Also comprise flow controller, and the outlet side of described air intake valve 4 is provided with gas meter 5, wherein said gas meter is for detection of the input gas flow of this spark test device 1 and send to this flow controller; Described flow controller is used for controlling this air intake valve 4 work according to the input gas flow of this spark test device 1 with the setting gas flow.
Described air intake valve 4 comprises hydrogen valve, oxygen valve and air valve, and described gas meter 5 comprises hydrogen flowmeter, oxygen flow meter and air flowmeter.
Hydrogen source gas is sent into pipeline by opening hydrogen pump, and hydrogen flowing quantity records its flow size by hydrogen flowmeter; Oxygen source is pumped into pipeline by opening oxygen, and oxygen flow records its flow size by oxygen flow meter; The air source of the gas is sent into pipeline by opening pneumatic pump, and air mass flow records its flow size by air flowmeter; The air inlet main valve connects the air intake opening of spark test device, control hydrogen, oxygen and air enter the spark test device, be connected blowdown valve 8 between air inlet main valve and the spark test device air intake opening, pressure by blowdown valve 8 control gases, ensure that the pressure in the spark test device reaches steady state, connect tested circuit at servomotor 2 and obtain explosion time circuit numerical value, when blast is finished, gas is discharged in spark test device gas outlet, exported by pipeline control gas by the exhaust main valve, discharge gas by air outlet valve 12 and 13, in application, be not limited only to two air outlet valves, for preventing explosive damage equipment, with the pressure that explodes and produce, discharge gaseous tension by the air inlet normally open valve on the pipeline and exhaust normally open valve, reduce equipment loss.
Described essential safety spark test device, preferably, also comprise industrial computer, and described air outlet valve 12,13 outlet side are provided with this gas concentration sensor 15,16, and wherein said gas concentration sensor 15,16 is for detection of the output gas concentration of this spark test device 1 and send to this industrial computer; Described industrial computer is used for controlling this air intake valve 4 work according to the output gas concentration of this spark test device 1 with the setting gas concentration.
Described essential safety spark test device, preferred, the utmost point is held first output terminal that 1-1 connects circuit under test in described spark test device 1, and cadmium dish 1-2 connects second output terminal of this circuit under test.
Described essential safety spark test device, preferably, also comprise air inlet main valve 6, air inlet normally open valve 7, blowdown valve 8 and spark arrester 15, first end of wherein said air inlet main valve 6 connects this air inlet normally open valve 7, gas meter 5 respectively, and second end of described air inlet main valve 6 connects this blowdown valve 8 and passes through this spark arrester 15 and this spark test device 1 internal communication.
Described essential safety spark test device, preferably, also comprise exhaust main valve 9, exhaust normally open valve 10, vacuum pumping valve 11 and vacuum pump 14, first end of wherein said exhaust main valve 9 and this spark test device 1 internal communication, second end of described exhaust main valve 9 connects this exhaust normally open valve 10 and air outlet valve 12,13 respectively, and connects this vacuum pump 14 by this vacuum pumping valve 11.
Described essential safety spark test device, preferred, also comprise by-pass valve 16, wherein said air outlet valve 12,13 is connected with air inlet main valve 6 by this by-pass valve 16.
Described essential safety spark test device, preferably, also comprise tested circuit 3, Calibration Circuit 17 and switch 18, wherein said servomotor 2 is connected the transmission circuit data with tested circuit 3, be connected switch between Calibration Circuit 17 and the tested circuit 18, when being used for circuit data that the circuit data that transmits when tested circuit 18 and Calibration Circuit 17 preset and not matching, changed by switch 18.
Described essential safety spark test device, preferred, described gas concentration sensor 15,16 comprises hydrogen gas concentration sensor 15 and oxygen concentration sensor 16.
When carrying out a new essential safety when cremating check, be connected the vacuum pump 14 on the total valve air gate pipeline of exhaust, the gas in the spark test device 1 is vacuumized, is connected vacuum pumping valve 11 between vacuum pump and the pipeline and controls it and vacuumize.
When this device is not cremated check, when only carrying out hydrogen, oxygen and air check, close the air inlet main valve, by being connected the by-pass valve opening conduits on the pipeline, after the source of the gas concentration data of its hydrogen, oxygen and air is analyzed by in-line analyzer, be transferred in the computing machine, handle for reviewer's analysis optimization.
This device also can to the test mixture of binary gas or ternary gas real-time carry out proportional arrangement automatically, suitable gas is methane (CH
4), ethene (C
2H
4), hydrogen (H
2), oxygen (O
2) and air.
For the tested circuit of 3～10A, adopt the mode of directly introducing to reduce and introduce the circuit internal resistance to the influence of tested circuit.
Essential safety spark test device dynamic flow monitored picture as shown in Figure 2, monitored picture is made by advanced person's configuration software technology, the state that can show each valve in the whole checkout procedure, motor (pump) in real time shows the critical data such as pressure, checking circuit voltage, checking circuit electric current of frequency of exposure, the spark test device of dragging motor rotating speed, tungsten filament and cadmium dish in real time.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (9)
1. essential safety spark test device, comprise spark test device (1), servomotor (2), air intake valve (4) and the valve of giving vent to anger (12,13), be provided with the utmost point in the wherein said spark test device (1) and hold (1-1) and cadmium dish (1-2), and the downside that the described utmost point is held (1-1) is provided with tungsten filament (1-3); Described servomotor (2) connects this utmost point respectively and holds (1-1) and cadmium dish (1-2), is used for driving this utmost point and holds (1-1) and cadmium dish (1-2) rotation when check, makes this utmost point hold the tungsten filament of (1-1) downside (1-3) and contacts with this cadmium dish (1-2);
Described air intake valve (4) and this spark test device (1) internal communication, the inlet end of described air outlet valve (12,13) and this spark test device (1) internal communication;
It is characterized in that: also comprise flow controller, and the outlet side of described air intake valve (4) is provided with gas meter (5), wherein said gas meter is for detection of the input gas flow of this spark test device (1) and send to this flow controller; Described flow controller is used for controlling this air intake valve (4) work according to the input gas flow of this spark test device (1) with the setting gas flow.
2. essential safety spark test device according to claim 1, it is characterized in that: also comprise industrial computer, and the outlet side of described air outlet valve (12,13) is provided with this gas concentration sensor (15,16), and wherein said gas concentration sensor (15,16) is for detection of the output gas concentration of this spark test device (1) and send to this industrial computer; Described industrial computer is used for controlling this air intake valve (4) work according to the output gas concentration of this spark test device (1) with the setting gas concentration.
3. essential safety spark test device according to claim 1 and 2 is characterized in that: the utmost point is held first output terminal that (1-1) connects circuit under test in described spark test device (1), and cadmium dish (1-2) connects second output terminal of this circuit under test.
4. essential safety spark test device according to claim 3, it is characterized in that: also comprise air inlet main valve (6), air inlet normally open valve (7), blowdown valve (8) and spark arrester (15), first end of wherein said air inlet main valve (6) connects this air inlet normally open valve (7), gas meter (5) respectively, and second end of described air inlet main valve (6) connects this blowdown valve (8) and passes through this spark arrester (15) and this spark test device (1) internal communication.
5. essential safety spark test device according to claim 4, it is characterized in that: also comprise exhaust main valve (9), exhaust normally open valve (10), vacuum pumping valve (11) and vacuum pump (14), first end of wherein said exhaust main valve (9) and this spark test device (1) internal communication, second end of described exhaust main valve (9) connects this exhaust normally open valve (10) and air outlet valve (12,13) respectively, and connects this vacuum pump (14) by this vacuum pumping valve (11).
6. essential safety spark test device according to claim 5 is characterized in that: also comprise by-pass valve (16), wherein said air outlet valve (12,13) is connected with air inlet main valve (6) by this by-pass valve (16).
7. essential safety spark test device according to claim 1, it is characterized in that: also comprise tested circuit (3), Calibration Circuit (17) and switch (18), wherein said servomotor (2) is connected the transmission circuit data with tested circuit (3), be connected switch between Calibration Circuit (17) and the tested circuit (18), when being used for circuit data that the circuit data that transmits when tested circuit (18) and Calibration Circuit (17) preset and not matching, changed by switch (18).
8. essential safety spark test device according to claim 1, it is characterized in that: described air intake valve (4) comprises hydrogen valve, oxygen valve and air valve, and described gas meter (5) comprises hydrogen flowmeter, oxygen flow meter and air flowmeter.
9. essential safety spark test device according to claim 2, it is characterized in that: described gas concentration sensor (15,16) comprises hydrogen gas concentration sensor (15) and oxygen concentration sensor (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063374 CN203054187U (en) | 2013-02-04 | 2013-02-04 | Intrinsic safety spark test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063374 CN203054187U (en) | 2013-02-04 | 2013-02-04 | Intrinsic safety spark test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054187U true CN203054187U (en) | 2013-07-10 |
Family
ID=48737127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320063374 Expired - Lifetime CN203054187U (en) | 2013-02-04 | 2013-02-04 | Intrinsic safety spark test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203054187U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367646A (en) * | 2017-06-19 | 2017-11-21 | 北方工业大学 | Intrinsically safe circuit spark test device and speed regulation method |
| CN107394585A (en) * | 2017-07-27 | 2017-11-24 | 北方工业大学 | Cadmium disc for inductive circuit of spark test device and processing method thereof |
| CN107543844A (en) * | 2017-07-27 | 2018-01-05 | 湖南人文科技学院 | The detection method that a kind of tungsten filament electrode for spark test apparatus ftractures |
-
2013
- 2013-02-04 CN CN 201320063374 patent/CN203054187U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367646A (en) * | 2017-06-19 | 2017-11-21 | 北方工业大学 | Intrinsically safe circuit spark test device and speed regulation method |
| CN107367646B (en) * | 2017-06-19 | 2020-02-28 | 北方工业大学 | Intrinsically safe circuit spark test device and speed regulation method |
| CN107394585A (en) * | 2017-07-27 | 2017-11-24 | 北方工业大学 | Cadmium disc for inductive circuit of spark test device and processing method thereof |
| CN107543844A (en) * | 2017-07-27 | 2018-01-05 | 湖南人文科技学院 | The detection method that a kind of tungsten filament electrode for spark test apparatus ftractures |
| CN107394585B (en) * | 2017-07-27 | 2019-08-20 | 北方工业大学 | Cadmium disc for inductive circuit of spark test device and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101241093B (en) | Gas sensor calibration and reliability test system | |
| CN109668824A (en) | Simulate the high speed humidity corrosion loop experimental provision of natural gas line internal corrosion environment | |
| CN107024377B (en) | Online dilution monitoring device for total hydrocarbons in waste gas | |
| CN102881120B (en) | Gas leakage alarm controller with intelligent alarm threshold value and control method thereof | |
| CN105334278B (en) | Gas chromatograph inlet end trace gas controller | |
| CN206020318U (en) | A kind of gas dew point analytical equipment | |
| CN203054187U (en) | Intrinsic safety spark test device | |
| CN104330278A (en) | Vacuum generator performance detection equipment and detection method | |
| CN203519626U (en) | Automatic calibration device for transformer gas in oil | |
| CN107064281B (en) | Online dilution monitoring method for total hydrocarbons in waste gas | |
| CN203606339U (en) | Device for detecting sulfur hexafluoride leakage alarming instrument | |
| CN205175975U (en) | Gas chromatograph inlet end trace gas control ware | |
| CN109916568A (en) | Electric machine controller sealing propertytest system, device and method | |
| CN204301943U (en) | Gas pressure regulator, governor detection air-channel system | |
| CN202149889U (en) | Intelligent resistance-capacitance type dew point instrument with high precision | |
| CN110726547A (en) | Portable comprehensive checking device for pressure protection device | |
| CN103063463B (en) | Detection device of output pressure characteristics for vacuum regulator | |
| CN209476243U (en) | A kind of high-precision gas generator | |
| CN211121956U (en) | Portable comprehensive checking device for pressure protection device | |
| CN205560277U (en) | Hydrogen busbar electric system | |
| CN204269293U (en) | Low static pressure differential pressure producer | |
| CN207647901U (en) | A kind of proportioning valve is performance test bed | |
| CN203786104U (en) | Automatic calibrating device for catalytic combustion type methane sensor | |
| CN202838621U (en) | Gas leakage alarm controller with intelligent alarm threshold | |
| CN202837222U (en) | Helium concentration meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING Free format text: FORMER NAME: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Patentee after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Branch City Road No. 6 Patentee before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
|
| CX01 | Expiry of patent term |