CN109142648B - SF 6 Gas concentration and oxygen content composite transmitter calibration system - Google Patents
SF 6 Gas concentration and oxygen content composite transmitter calibration system Download PDFInfo
- Publication number
- CN109142648B CN109142648B CN201811312267.9A CN201811312267A CN109142648B CN 109142648 B CN109142648 B CN 109142648B CN 201811312267 A CN201811312267 A CN 201811312267A CN 109142648 B CN109142648 B CN 109142648B
- Authority
- CN
- China
- Prior art keywords
- way check
- check valve
- electromagnetic
- valves
- valve
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The invention belongs to the field of detection devices, and particularly relates to an SF (sulfur hexafluoride) 6 The calibration system of the gas concentration and oxygen content composite transmitter comprises N transmitters to be calibrated and a high-precision SF (sulfur hexafluoride) 6 Gas concentration transmitter (97), high-precision oxygen content transmitter (98), transmitter test tank (99), M SF 6 The device comprises a gas storage tank, P oxygen storage tanks, a high-purity nitrogen storage tank (61), L one-way check valves, a temperature sensor (49), a vacuum pressure gauge (50), a monitoring host (128), a printer (129) and a control box (130); the monitoring host (128), the transmitter test tank (99), the control box (130) and the printer (129) are assembled on the operation table, and the monitoring host (128) is connected with the programmable controller (102) through a network interface. The invention relates to an SF with high accuracy and high operation calibration speed 6 And a calibration device for the gas concentration and oxygen content composite transmitter.
Description
Technical Field
The invention belongs to the field of detection devices, and particularly relates to an SF (sulfur hexafluoride) 6 A calibration system for a gas concentration and oxygen content composite transmitter.
Background
The high-voltage switch is one of important equipment of a power plant and a transformer substation, and in order to safely and reliably send electric power to a national power grid, the equipment such as the high-voltage switch must be ensured to work normally and reliably. At present, SF is adopted in a high-voltage switch GIS device 6 Gas is used as insulating protection gas and arc extinguishing medium, SF 6 The gas is not toxic, but the decomposed product after arc decomposition contains various toxic gases, and once the toxic gases leak into the high-voltage switch chamber, serious harm can be brought to staff in the high-voltage switch chamber. Meanwhile, in order to ensure the physical health of staff in the high-voltage switch chamber, the oxygen content in the high-voltage switch chamber needs to be monitored in real time. Therefore, it is explicitly proposed in the national power safety operation regulations that a monitoring SF is installed in a high-voltage switch distribution room 6 An environmental monitoring system for gas concentration and oxygen content.
In the environment monitoring system of the high-voltage switch distribution room, a plurality of SF are required to be installed 6 A gas concentration transmitter and an oxygen content transmitter. In the prior art system, SF 6 The gas concentration transmitter and the oxygen content transmitter are two independent devices, and SF is respectively collected by a monitoring system 6 The number of sensors in the system is large due to the signals of the gas concentration and the oxygen content, the number of monitoring points of the corresponding acquisition system is also large, and the cost and the price of the system are high.
To solve the above problems, more and more sensor manufacturers have developed a sensor capable of simultaneously detecting SF 6 The output signal of the compound transmitter with the gas concentration and the oxygen content adopts the mode of an RS485 bus, thus greatly reducing the number of sensors, simplifying a signal acquisition system and greatly reducing the cost and price of the system. At present, SF 6 Composite transmitters of gas concentration and oxygen content have become a mainstream product in high voltage switching power distribution room environmental monitoring systems.
Currently, for SF 6 The calibration of the gas concentration and oxygen content composite transmitter is carried out by adopting a single parameter mode, and the specific calibration method generally comprises the steps of putting the transmitter into an air bag and filling a certain standard concentrationSF of degree 6 The output signal of the transmitter is connected with a computer provided with calibration software, a sensor tester analyzes the test result displayed by the computer, and then the compensation data of the transmitter is written into the transmitter by the computer to finish the SF of the transmitter 6 Calibrating the gas concentration; in the same way, the similar method is adopted to calibrate the oxygen content once, and the calibration work of one transmitter is completed after the two calibrations are completed.
The above-described method for calibrating a transmitter has a number of disadvantages, mainly:
1) For SF 6 The gas concentration and the oxygen content are respectively calibrated, and the operation process is complicated;
2) Only one transmitter can be calibrated at a time, and the calibration efficiency is low;
3) Because only one point of calibration is adopted, the calibration precision is lower;
4) Due to SF employed in calibration 6 The gas is not recovered, resulting in SF 6 The waste of gas and the pollution to the environment are generated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the SF with high accuracy, convenient operation and high calibration speed 6 A calibration system for a gas concentration and oxygen content composite transmitter.
To achieve the above object, the present invention is achieved by:
SF 6 the calibration system of the gas concentration and oxygen content composite transmitter comprises N transmitters to be calibrated and a high-precision SF (sulfur hexafluoride) 6 Gas concentration transmitter, high-precision oxygen content transmitter, transmitter test tank and M SF 6 The device comprises a gas storage tank, P oxygen storage tanks, a high-purity nitrogen storage tank, L one-way check valves, a temperature sensor, a vacuum pressure gauge, a 1 st vacuum pump, a 2 nd vacuum pump, a 3 rd vacuum pump, a programmable controller, H relays, I electromagnetic valves, a monitoring host, a printer and a control box; wherein n=10; m=5; p=5; l=48; h=25; i=22.
The temperature sensor, the vacuum pressure gauge and the 1 st one-way check valve to the 26 th one-way check valve of the L one-way check valves are welded on the transmitter test tank in an argon arc welding mode.
A port of a 27 th one-way check valve, a 29 th one-way check valve, a 31 st one-way check valve, a 33 rd one-way check valve and a 35 th one-way check valve in the L one-way check valves are sequentially connected with a 11 th one-way check valve to a 15 th one-way check valve in the L one-way check valves through a 1 st electromagnetic valve to a 5 th electromagnetic valve of the I electromagnetic valves; the other ports of the 27 th one-way check valve, the 29 th one-way check valve, the 31 st one-way check valve, the 33 th one-way check valve and the 35 th one-way check valve in the L one-way check valves are sequentially connected with M SF (sulfur hexafluoride) 6 1 st SF in gas storage tank 6 Gas storage tank to 5SF 6 The gas storage tank is connected.
A port of a 28 th one-way check valve, a 30 th one-way check valve, a 32 nd one-way check valve, a 34 th one-way check valve and a 36 th one-way check valve in the L one-way check valves are sequentially connected with M SF (sulfur hexafluoride) 6 1 st SF in gas storage tank 6 Gas storage tank to 5SF 6 The gas storage tank is connected; the other ports of the 28 th one-way check valve, the 30 th one-way check valve, the 32 nd one-way check valve, the 34 th one-way check valve and the 36 th one-way check valve in the L one-way check valves are communicated with the 1 st electromagnetic valve group in the I electromagnetic valves.
The 1 st electromagnetic valve group in the I electromagnetic valves consists of a 12 th electromagnetic valve, a 13 th electromagnetic valve, a 14 th electromagnetic valve, a 15 th electromagnetic valve and a 16 th electromagnetic valve which are cascaded together, and the output ports of the 1 st electromagnetic valve group are cascaded together and are provided with a public output port.
The public output port of the 1 st electromagnetic valve group in the I electromagnetic valves is connected with the 22 nd one-way check valve in the L one-way check valves through the 1 st vacuum pump.
A port of a 37 th one-way check valve, a 39 th one-way check valve, a 41 st one-way check valve, a 43 rd one-way check valve and a 45 th one-way check valve in the L one-way check valves are sequentially connected with a 16 th one-way check valve to a 20 th one-way check valve in the L one-way check valves through a 6 th electromagnetic valve to a 10 th electromagnetic valve of the I electromagnetic valves; the other ports of the 37 th one-way check valve, the 39 th one-way check valve, the 41 st one-way check valve, the 43 rd one-way check valve and the 45 th one-way check valve in the L one-way check valves are sequentially connected with the 1 st oxygen storage tank to the 5 th oxygen storage tank in the P oxygen storage tanks.
A port of a 38 th one-way check valve, a 40 th one-way check valve, a 42 th one-way check valve, a 44 th one-way check valve and a 46 th one-way check valve in the L one-way check valves are sequentially connected with a 1 st oxygen gas storage tank to a 5 th oxygen gas storage tank in the P oxygen gas storage tanks; the other ports of the 38 th one-way check valve, the 40 th one-way check valve, the 42 th one-way check valve, the 44 th one-way check valve and the 46 th one-way check valve in the L one-way check valves are communicated with the 2 nd electromagnetic valve group in the I electromagnetic valves.
The 2 nd electromagnetic valve group in the I electromagnetic valves is formed by cascading the 17 th electromagnetic valve, the 18 th electromagnetic valve, the 19 th electromagnetic valve, the 20 th electromagnetic valve and the 21 st electromagnetic valve together, and the output ports of the 2 nd electromagnetic valve group are connected in series and are provided with a common output port.
The public output port of the 2 nd electromagnetic valve group in the I electromagnetic valves is connected with the 23 rd one-way check valve in the L one-way check valves through the 2 nd vacuum pump.
One end of a 47 th one of the L one-way check valves is connected with a 21 st one of the L one-way check valves through an 11 th one of the I electromagnetic valves); the other end of the 47 th one of the L one-way check valves is connected with a high-purity nitrogen storage tank; the other end of the high-purity nitrogen gas storage tank is connected with the 24 th one-way check valve in the L one-way check valves sequentially through the 48 th one-way check valve in the L one-way check valves, the 22 nd electromagnetic valve in the I electromagnetic valves and the 3 rd vacuum pump.
The M SF 6 1 st SF in gas storage tank 6 SF with concentration of 300ppm is stored in the gas storage tank 6 Compressing the gas; the M SF 6 2 nd SF in gas storage tank 6 SF with concentration of 600ppm is stored in the gas storage tank 6 Compressing the gas; the M SF 6 3 rd SF in gas storage tank 6 SF with 900ppm concentration is stored in the gas storage tank 6 Compressing the gas; the M SF 6 4 th SF in gas storage tank 6 SF with concentration of 1200ppm is stored in the gas storage tank 6 Compressing the gas; the M SF 6 5 th SF in gas storage tank 6 SF with concentration of 1500ppm is stored in the gas storage tank 6 Compressed gas.
The 1 st oxygen gas storage tank in the P oxygen gas storage tanks stores compressed gas with 5% of oxygen content; the 2 nd oxygen gas storage tank in the P oxygen gas storage tanks stores compressed gas with the oxygen content of 10 percent; the 3 rd oxygen gas storage tank in the P oxygen gas storage tanks stores compressed gas with the oxygen content of 15%; the 4 th oxygen gas storage tank in the P oxygen gas storage tanks stores compressed gas with the oxygen content of 20 percent; and compressed gas with 25% of oxygen content is stored in the 5 th oxygen storage tank in the P oxygen storage tanks.
The high-purity nitrogen storage tank stores compressed nitrogen with purity close to 100%.
The programmable controller, the H relays, the I electromagnetic valves, the 1 st vacuum pump, the 2 nd vacuum pump and the 3 rd vacuum pump are arranged in the control box.
The monitoring host, the transmitter test tank, the control box and the printer are assembled on the operation console, the monitoring host is connected with the programmable controller through a network interface, and the monitoring host is connected with the printer to realize the transmission of data and control commands.
As a preferable scheme, the programmable controller is connected with the 1 st relay to the 25 th relay in the H relays through control wires.
And the 1 st relay to the 22 nd relay in the H relays are sequentially connected with the 1 st electromagnetic valve to the 22 nd electromagnetic valve in the I electromagnetic valves.
The 23 rd relay in the H relays is connected with the 1 st vacuum pump; the 24 th relay in the H relays is connected with the 2 nd vacuum pump; and the 25 th relay in the H relays is connected with the 3 rd vacuum pump.
The programmable controller controls the on-off of the 1 st to 5 th electromagnetic valves in the I electromagnetic valves by sequentially controlling the 1 st to 5 th relays in the H relays, so that the conduction of only one electromagnetic valve is ensured in the same time, and further, the SF6 gas with one concentration is ensured to enter the transmitter test tank from the SF6 gas storage tank through the single check valve.
The programmable controller controls the on-off of the 6 th to 10 th electromagnetic valves in the I electromagnetic valves by sequentially controlling the 6 th to 10 th relays in the H relays, so that the conduction of only one electromagnetic valve is ensured in the same time, and the oxygen with one concentration is ensured to enter the transmitter test tank from the oxygen storage tank through the single check valve.
The programmable controller controls the on-off of the 11 th electromagnetic valve in the I electromagnetic valves by controlling the 11 th relay in the H relays, so that high-purity nitrogen is ensured to enter the transmitter test tank from the high-purity nitrogen storage tank through the single check valve.
The programmable controller sequentially controls the 12 th relay to the 16 th relay in the H relays, so as to control the on-off of the 12 th electromagnetic valve in the 1 st electromagnetic valve group in the I electromagnetic valves to the 16 th electromagnetic valve in the I electromagnetic valves, and ensure that only one electromagnetic valve is conducted in the same time; meanwhile, the programmable controller controls the 23 rd relay in the H relays to further control the action of the 1 st vacuum pump, so that the gas in the transmitter test tank is pumped into SF with corresponding concentration 6 And the air storage tank is arranged in the air storage tank.
The programmable controller sequentially controls the 17 th relay to the 21 st relay in the H relays, so as to control the on-off of the 17 th electromagnetic valve in the 2 nd electromagnetic valve group in the I electromagnetic valves to the 21 st electromagnetic valve in the I electromagnetic valves, and ensure that only one electromagnetic valve is conducted in the same time; meanwhile, the 24 th relay in the H relays is controlled by the programmable controller, so that the action of the 2 nd vacuum pump is controlled, and the purpose that gas in the transmitter test tank is pumped into an oxygen gas storage tank with corresponding concentration is achieved.
The programmable controller controls a 22 nd relay in the H relays, and further controls a 22 nd electromagnetic valve in the I electromagnetic valves; meanwhile, the programmable controller controls the 25 th relay in the H relays, and further controls the action of the 3 rd vacuum pump, so that high-purity nitrogen gas in the transmitter test tank is pumped into the high-purity nitrogen gas storage tank.
The programmable controller is sequentially connected with the high-precision SF through the communication port 6 The 1 st to 10 th transmitters to be calibrated among the gas concentration transmitters, the high-precision oxygen content transmitters and the N transmitters to be calibrated are connected in a cascading manner; thereby realizing the high precision SF of the programmable controller 6 The method comprises the steps of collecting data of a 1 st to be calibrated transmitter to a 10 th to be calibrated transmitter in a gas concentration transmitter, a high-precision oxygen content transmitter, a temperature sensor and N transmitters to be calibrated.
SF of the invention 6 The working flow of the gas concentration and oxygen content composite transmitter calibration system is as follows.
1) And a tester controls the programmable controller to start a test program by operating the monitoring host, and the transmitter test tank is required to be vacuumized before the first test.
2) The programmable controller controls the 11 th relay in the H relays to act, and then controls the 11 th electromagnetic valve in the I electromagnetic valves to be conducted, so that high-purity nitrogen in the high-purity nitrogen storage tank is filled into the transmitter test tank, the programmable controller reads the values detected by the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated, and the values detected by the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated are compared with the values detected by the high-precision SF6 gas concentration transmitter and the high-precision oxygen transmitter, so that 0ppm of the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated is realized 6 And (5) calibrating the concentration and the 0% oxygen content.
After calibration is completed, the programmable controller controls the 22 nd relay in the H relays to act, further controls the 22 nd electromagnetic valve in the I electromagnetic valves to be conducted, and simultaneously controls the 25 th relay in the H relays to act, further controls the 3 rd vacuum pump to start, and fills high-purity nitrogen in the transmitter test tank back into the high-purity nitrogen storage tank.
3) The programmable controller controls the action of the 1 st relay in the H relays, and further controls the conduction of the 1 st electromagnetic valve in the I electromagnetic valves to enable M SF to be achieved 6 1 st SF in gas storage tank 6 SF in gas storage tank 6 Filling gas into a transmitter test tank, and reading the high-precision SF by a programmable controller 6 The method comprises the steps of detecting the values from the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated, and detecting the values and high-precision SF (sulfur hexafluoride) in the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated 6 And comparing the values detected by the gas concentration transmitters, and calibrating 300ppm concentration of the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated.
After calibration is completed, the programmable controller controls the 12 th relay in the H relays to act, further controls the 12 th electromagnetic valve in the 1 st electromagnetic valve group in the I electromagnetic valves to be conducted, simultaneously controls the 23 rd relay in the H relays to act, further controls the 1 st vacuum pump to start, and tests SF in the tank with the transmitter 6 The gas is filled back into M SF 6 1 st SF in gas storage tank 6 And the gas storage tank is arranged in the gas storage tank.
4) Correspondingly, the programmable controller sequentially controls the actions of the 2 nd relay to the 5 th relay in the H relays, and further controls the conduction of the 2 nd electromagnetic valve to the 5 th electromagnetic valve in the I electromagnetic valves, so that M SF are realized 6 2 nd SF in gas storage tank 6 Gas storage tank to 5SF 6 SF in gas storage tank 6 Filling gas into a transmitter test tank, and reading the high-precision SF by a programmable controller 6 The method comprises the steps of detecting the values from the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated, and detecting the values and high-precision SF (sulfur hexafluoride) in the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated 6 The number value detected by the gas concentration transmitters is compared, and the 1 st to-be-calibrated transmitter to the 10 th to-be-calibrated transmitter in the N transmitters to be calibrated are changedCalibration of the transmitter at 600ppm, 900ppm, 1200ppm and 1500ppm concentrations.
The programmable controller sequentially controls the 13 th relay to the 16 th relay in the H relays to act, and then controls the 13 th electromagnetic valve to the 16 th electromagnetic valve in the 1 st electromagnetic valve group in the I electromagnetic valves to be conducted; meanwhile, the 23 rd relay in the H relays is controlled to act, the 1 st vacuum pump is further controlled to start, and SF with concentration of 600ppm, 900ppm, 1200ppm and 1500ppm in the transmitter test tank is controlled 6 The gas is filled back into M SF 6 2 nd SF in gas storage tank 6 Gas storage tank to 5SF 6 And the gas storage tank is arranged in the gas storage tank.
5) The programmable controller controls the action of a 6 th relay in the H relays, and then controls the conduction of a 6 th electromagnetic valve in the I electromagnetic valves, so that oxygen in a 1 st oxygen gas storage tank in P oxygen gas storage tanks is filled into a transmitter test tank, the programmable controller reads the values detected by the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated, and the calibration of 5% oxygen content of the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated is realized by comparing the values detected by the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated with the values detected by the high-precision oxygen transmitters.
After calibration is completed, the programmable controller controls the 17 th relay in the H relays to act, further controls the 17 th electromagnetic valve in the 2 nd electromagnetic valve group in the I electromagnetic valves to be conducted, and simultaneously controls the 24 th relay in the H relays to act, further controls the 2 nd vacuum pump to start, and fills oxygen in the transmitter test tank back to the 1 st oxygen storage tank in the P oxygen storage tanks.
6) Correspondingly, the programmable controller sequentially controls the 7 th relay to the 10 th relay in the H relays to act, further controls the 7 th electromagnetic valve to the 10 th electromagnetic valve in the I electromagnetic valve to be conducted, so that oxygen in the 2 nd oxygen gas storage tank to the 5 th oxygen gas storage tank in the P oxygen gas storage tanks is filled into the transmitter test tank, the programmable controller reads the values detected by the 1 st to 10 th transmitters to be calibrated in the high-precision oxygen transmitters, the temperature sensor and the N transmitters to be calibrated, and the calibration of 10%, 15%, 20% and 25% of the contents of the 1 st to 10 th to be calibrated transmitters in the N transmitters to be calibrated is realized by comparing the values detected by the 1 st to 10 th transmitters to be calibrated in the N transmitters to be calibrated with the values detected by the high-precision oxygen transmitters.
The programmable controller sequentially controls the 18 th to 21 st relays in the H relays to act, further controls the 18 th to 21 st solenoid valves in the 2 nd solenoid valve group in the I solenoid valves to be conducted, simultaneously controls the 24 th relay in the H relays to act, further controls the 2 nd vacuum pump to start, and fills 10%, 15%, 20% and 25% of oxygen in the transmitter test tank back into the 2 nd to 5 th oxygen storage tanks in the P oxygen storage tanks.
The temperature sensor in the system is used for detecting the gas temperature during the test, and the vacuum pressure gauge is used for indicating the vacuum degree during the vacuumizing.
The operation is completed by 5SF of the 1 st to 10 th transmitters to be calibrated among N transmitters to be calibrated 6 Calibration work of concentration calibration points and 5 oxygen content calibration points; and (3) detaching the calibrated transmitters, and installing another 10 transmitters to be calibrated, namely, calibrating the new 10 transmitters.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
FIG. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic diagram of the control box according to the present invention.
In the figure: 1-48: the 1 st one-way check valve to the 48 th one-way check valve in the L one-way check valves; 49: a temperature sensor; 50: a vacuum pressure gauge; 51-55: m SF 6 1 st SF in gas storage tank 6 Gas storage tanks to 5SF 6 A gas storage tank; 56-60: the 1 st oxygen gas storage tank to the 5 th oxygen gas storage tank in the P oxygen gas storage tanks; 61: high purity nitrogenA gas storage tank; 62 to 83: the 1 st electromagnetic valve to the 22 nd electromagnetic valve in the I electromagnetic valves; 84: a 1 st vacuum pump; 85: a 2 nd vacuum pump; 86: a 3 rd vacuum pump; 87-96: the 1 st to 10 th transmitters to be calibrated among the N transmitters to be calibrated; 97: a high-precision SF6 gas concentration transmitter; 98: a high precision oxygen content transmitter; 99: a transmitter test tank; 100: a 1 st electromagnetic valve group in the I electromagnetic valves; 101: a 2 nd electromagnetic valve group in the I electromagnetic valves; 102: a programmable controller; 103 to 127: the 1 st relay to the 25 th relay in the H relays; 128: monitoring a host; 129: a printer; 130: and a control box.
Detailed Description
As shown in fig. 1 and 2, SF 6 A gas concentration and oxygen content composite transmitter calibration system comprising: comprises N transmitters to be calibrated and high-precision SF 6 Gas concentration transmitter 97, high precision oxygen content transmitter 98, transmitter test tank 99, M SF 6 The device comprises a gas storage tank, P oxygen storage tanks, a high-purity nitrogen storage tank 61, L one-way check valves, a temperature sensor 49, a vacuum pressure gauge 50, a 1 st vacuum pump 84, a 2 nd vacuum pump 85, a 3 rd vacuum pump 86, a programmable controller 102, H relays, I electromagnetic valves, a monitoring host 128, a printer 129 and a control box 130; wherein n=10; m=5; p=5; l=48; h=25; i=22.
The temperature sensor 49, the vacuum pressure gauge 50 and the 1 st one-way check valve 1 to the 26 th one-way check valve 26 of the L one-way check valves are welded on the transmitter test tank 99 in an argon arc welding mode.
A port of the 27 th one-way check valve 27, the 29 th one-way check valve 29, the 231 st one-way check valve 31, the 33 rd one-way check valve 33 and the 35 th one-way check valve 35 in the L one-way check valves is connected with the 11 th one-way check valve 11 to the 15 th one-way check valve 15 in the L one-way check valves sequentially through the 1 st electromagnetic valve 62 to the 5 th electromagnetic valve 66 of the I electromagnetic valve; the other ports of the 27 th one-way check valve 27, the 29 th one-way check valve 29, the 31 st one-way check valve 31, the 33 th one-way check valve 33 and the 35 th one-way check valve 35 in the L one-way check valves are sequentially connected with M SF (sulfur hexafluoride) 6 First in gas storage tank1SF 6 Gas storage tank 51 to 5SF 6 A gas reservoir 55 is connected.
One end of a 28 th one-way check valve 28, a 30 th one-way check valve 30, a 32 nd one-way check valve 32, a 34 th one-way check valve 34 and a 36 th one-way check valve 36 in the L one-way check valves are sequentially connected with M SF (sulfur hexafluoride) 6 1 st SF in gas storage tank 6 Gas storage tank 51 to 5SF 6 The gas storage tank 55 is connected; the other ports of the 28 th one-way check valve 28, the 30 th one-way check valve 30, the 32 nd one-way check valve 32, the 34 th one-way check valve 34 and the 36 th one-way check valve 36 in the L one-way check valves are communicated with the 1 st electromagnetic valve group 100 in the I electromagnetic valves.
The 1 st electromagnetic valve group 100 in the I electromagnetic valves is formed by cascading a 12 th electromagnetic valve 73, a 13 th electromagnetic valve 74, a 14 th electromagnetic valve 75, a 15 th electromagnetic valve 76 and a 16 th electromagnetic valve 77, and output ports of the 1 st electromagnetic valve group are connected in series and are provided with a public output port.
The public output port of the 1 st electromagnetic valve group 100 in the I electromagnetic valves is connected with the 22 nd one-way check valve 22 in the L one-way check valves through the 1 st vacuum pump 84.
A port of a 37 th one-way check valve 37, a 39 th one-way check valve 39, a 41 st one-way check valve 41, a 43 rd one-way check valve 43 and a 45 th one-way check valve 45 in the L one-way check valves is connected with a 16 th one-way check valve 16 to a 20 th one-way check valve 20 in the L one-way check valves sequentially through a 6 th electromagnetic valve 67 to a 10 th electromagnetic valve 71 of an I electromagnetic valve; the other ports of the 37 th one-way check valve 37, the 39 th one-way check valve 39, the 41 st one-way check valve 41, the 43 rd one-way check valve 43 and the 45 th one-way check valve 45 in the L one-way check valves are sequentially connected with the 1 st oxygen gas storage tank 56 to the 5 th oxygen gas storage tank 60 in the P oxygen gas storage tanks.
A port of a 38 th one-way check valve 38, a 40 th one-way check valve 40, a 42 th one-way check valve 42, a 44 th one-way check valve 44 and a 46 th one-way check valve 46 in the L one-way check valves is sequentially connected with a 1 st oxygen gas storage tank 56 to a 5 th oxygen gas storage tank 60 in the P oxygen gas storage tanks; the other ports of the 38 th one-way check valve 38, the 40 th one-way check valve 40, the 42 th one-way check valve 42, the 44 th one-way check valve 44 and the 46 th one-way check valve 46 in the L one-way check valves are communicated with the 2 nd electromagnetic valve group 101 in the I electromagnetic valves.
The 2 nd electromagnetic valve group 101 in the I electromagnetic valves is formed by cascading the 17 th electromagnetic valve 78, the 18 th electromagnetic valve 79, the 19 th electromagnetic valve 80, the 20 th electromagnetic valve 81 and the 21 st electromagnetic valve 82 together, and the output ports of the 2 nd electromagnetic valve group are connected in a cascading way and are provided with a public output port.
The public output port of the 2 nd electromagnetic valve group 101 in the I electromagnetic valves is connected with the 23 rd one-way check valve 23 in the L one-way check valves through the 2 nd vacuum pump 85.
One end of a 47 th one-way check valve 47 in the L one-way check valves is connected with a 21 st one-way check valve 21 in the L one-way check valves through an 11 th electromagnetic valve 72 in the I electromagnetic valves; the other end of the 47 th one-way check valve 47 in the L one-way check valves is connected with a high-purity nitrogen storage tank 61; the other end of the high-purity nitrogen storage tank 61 is connected with the 24 th one of the L one-way check valves through the 48 th one-way check valve 48 of the L one-way check valves, the 22 nd electromagnetic valve 83 of the I electromagnetic valves and the 3 rd vacuum pump 86 in sequence.
The programmable controller 102, the H relays, the I solenoid valves, the 1 st vacuum pump 84, the 2 nd vacuum pump 85 and the 3 rd vacuum pump 86 are arranged in the control box 130.
The monitoring host 128, the transmitter test tank 99, the control box 13 and the printer 129 are assembled on an operation table; the monitoring host 128 is connected with the programmable controller 102 through a network interface, and issues measurement and control commands to the programmable controller 102 through the monitoring host 128; the programmable controller 102 transmits the test data to the monitoring host 128 for display; meanwhile, the monitoring host 128 is connected to the printer 129, and controls the printer 129 to print test data.
The programmable controller 102 is connected with the 1 st relay 103 to the 25 th relay 127 in the H relays through control lines; the 1 st relay 103 to the 22 nd relay 124 in the H relays are sequentially connected with the 1 st electromagnetic valve 62 to the 22 nd electromagnetic valve 83 in the I electromagnetic valves; the 23 rd relay 125 of the H relays is connected with the 1 st vacuum pump 84; the 24 th relay 126 of the H relays is connected with the 2 nd vacuum pump 85; the 25 th relay 127 of the H relays is connected to the 3 rd vacuum pump 86.
The programmable controller 102 controls the on-off of the 1 st electromagnetic valve 62 to the 5 th electromagnetic valve 66 in the I electromagnetic valves by sequentially controlling the 1 st relay 103 to the 5 th relay 107 in the H relays, so that the conduction of only one electromagnetic valve is ensured in the same time, and the SF with only one concentration is ensured 6 The gas is formed by SF 6 The air reservoir enters the transmitter test tank 99 through a single check valve.
The programmable controller 102 sequentially controls the on-off of the 6 th to 10 th electromagnetic valves 67 to 71 in the I electromagnetic valves by controlling the 6 th to 10 th relays 108 to 112 in the H relays, so that it is ensured that only one electromagnetic valve is conducted within the same time, and further that only one concentration of oxygen enters the transmitter test tank 99 from the oxygen storage tank in the P oxygen storage tanks through a single check valve.
The programmable controller 102 controls the on-off of the 11 th electromagnetic valve 72 in the I electromagnetic valves by controlling the 11 th relay 113 in the H relays, so that the high-purity nitrogen is ensured to enter the transmitter test tank 99 from the high-purity nitrogen storage tank 61 through a single check valve.
The programmable controller 102 sequentially controls the 12 th relay 114 to the 16 th relay 118 in the H relays, so as to control the on-off of the 12 th electromagnetic valve 73 to the 16 th electromagnetic valve 77 in the 1 st electromagnetic valve group 100 in the I electromagnetic valves, and ensure that only one electromagnetic valve is conducted in the same time; meanwhile, the programmable controller 102 controls the 23 rd relay 125 in the H relays to further control the action of the 1 st vacuum pump 84, so as to realize that the gas in the transmitter test tank 99 is pumped into SF with corresponding concentration 6 And the air storage tank is arranged in the air storage tank.
The programmable controller 102 sequentially controls the 17 th relay 119 to the 21 st relay 123 in the H relays, so as to control the on-off of the 17 th electromagnetic valve 78 to the 21 st electromagnetic valve 82 in the 2 nd electromagnetic valve group 101 in the I electromagnetic valves, and ensure that only one electromagnetic valve is conducted in the same time; meanwhile, the programmable controller 102 controls the 24 th relay 126 in the H relays, and further controls the 2 nd vacuum pump 85 to act, so that the gas in the transmitter test tank 99 is pumped into the oxygen gas storage tank with corresponding concentration.
The programmable controller 102 controls the 22 nd relay 124 of the H relays, and further controls the 22 nd solenoid valve 83 of the I solenoid valves; meanwhile, the programmable controller 102 controls the 25 th relay 127 in the H relays to further control the action of the 3 rd vacuum pump 86, so that high-purity nitrogen gas in the transmitter test tank 99 is pumped into the high-purity nitrogen gas storage tank; the programmable controller 102 is connected to the 1 st to 25 th relays 103 to 127 of the H relays through control lines.
The 1 st relay 103 to the 22 nd relay 124 in the H relay are sequentially connected with the 1 st electromagnetic valve 62 to the 22 nd electromagnetic valve 83 in the I electromagnetic valves; the programmable controller 102 controls the 1 st relay 103 to the 22 nd relay 124 in the H relays respectively, and further controls the on-off of the 1 st electromagnetic valve 62 to the 22 nd electromagnetic valve 83 in the I electromagnetic valves;
the 23 rd relay 125 of the H relays is connected with the 1 st vacuum pump 84; the 24 th relay 126 of the H relays is connected with the 2 nd vacuum pump 85, and the 25 th relay 127 of the H relays is connected with the 3 rd vacuum pump 86; the programmable controller 102 controls the 23 rd to 25 th relays 125 to 127 of the H relays, respectively, thereby controlling the operation and stop of the 1 st to 3 rd vacuum pumps 84 to 86.
The programmable controller 102 sequentially communicates with the high-precision SF via a communication port 6 The gas concentration transmitter 97, the high-precision oxygen content transmitter 98, the temperature sensor 49 and the 1 st to 10 th to be calibrated transmitters 87 to 96 among the N to be calibrated transmitters are connected in a cascading manner, so that the high-precision SF is realized by the programmable controller 102 6 The data acquisition of the 1 st to 10 th to be calibrated transmitters 87 to 96 among the gas concentration transmitter 97, the high-precision oxygen content transmitter 98, the temperature sensor 49 and the N to be calibrated transmitters.
It should be understood that the foregoing detailed description of the present invention is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that modifications and equivalents may be made to the present invention to achieve the same technical effects; as long as the use requirement is met, the invention is within the protection scope of the invention.
Claims (1)
1.SF 6 The calibration system of the gas concentration and oxygen content composite transmitter is characterized by comprising N transmitters to be calibrated and a high-precision SF (sulfur hexafluoride) 6 Gas concentration transmitter (97), high-precision oxygen content transmitter (98), transmitter test tank (99), M SF 6 The device comprises a gas storage tank, P oxygen storage tanks, a high-purity nitrogen storage tank (61), L one-way check valves, a temperature sensor (49), a vacuum pressure gauge (50), a 1 st vacuum pump (84), a 2 nd vacuum pump (85), a 3 rd vacuum pump (86), a programmable controller (102), H relays, I electromagnetic valves, a monitoring host (128), a printer (129) and a control box (130); wherein n=10; m=5; p=5; l=48; h=25; i=22;
a temperature sensor (49), a vacuum pressure gauge (50) and a 1 st one-way check valve (1) to a 26 th one-way check valve (26) of the L one-way check valves are respectively welded on the transmitter test tank (99) in an argon arc welding mode; the transmitter test tank (99) is also respectively connected with high-precision SF 6 The gas concentration transmitter (97), the high-precision oxygen content transmitter (98) and the 1 st to 10 th to be calibrated transmitters (87) to 10 th to be calibrated transmitters (96) in the N to be calibrated transmitters;
a port of a 27 th one-way check valve (27), a 29 th one-way check valve (29), a 31 st one-way check valve (31), a 33 rd one-way check valve (33) and a 35 th one-way check valve (35) in the L one-way check valves is connected with an 11 th one-way check valve (11) to an 15 th one-way check valve (15) in the L one-way check valves through a 1 st electromagnetic valve (62) to a 5 th electromagnetic valve (66) of the I electromagnetic valves in sequence respectively; the saidThe other ports of the 27 th one-way check valve (27), the 29 th one-way check valve (29), the 31 st one-way check valve (31), the 33 rd one-way check valve (33) and the 35 th one-way check valve (35) in the L one-way check valves are respectively connected with M SF in sequence 6 1 st SF in gas storage tank 6 Gas storage tanks (51) to 5SF 6 The gas storage tank (55) is connected;
a 28 th one-way check valve (28), a 30 th one-way check valve (30), a 32 nd one-way check valve (32), a 34 th one-way check valve (34) and a 36 th one-way check valve (36) in the L one-way check valves are sequentially connected with M SF respectively 6 1 st SF in gas storage tank 6 Gas storage tanks (51) to 5SF 6 The gas storage tank (55) is connected; the other ports of the 28 th one-way check valve (28), the 30 th one-way check valve (30), the 32 nd one-way check valve (32), the 34 th one-way check valve (34) and the 36 th one-way check valve (36) in the L one-way check valves are respectively communicated with the 1 st electromagnetic valve group (100) in the I electromagnetic valves;
the 1 st electromagnetic valve group (100) in the I electromagnetic valves is formed by cascading a 12 th electromagnetic valve (73), a 13 th electromagnetic valve (74), a 14 th electromagnetic valve (75), a 15 th electromagnetic valve (76) and a 16 th electromagnetic valve (77), and output ports of the 1 st electromagnetic valve group are connected in a cascading way and are provided with a public output port;
the public output port of the 1 st electromagnetic valve group (100) in the I electromagnetic valves is connected with the 22 nd one-way check valve (22) in the L one-way check valves through the 1 st vacuum pump (84);
a 37 th one-way check valve (37), a 39 th one-way check valve (39), a 41 st one-way check valve (41), a 43 rd one-way check valve (43) and a 45 th one-way check valve (45) in the L one-way check valves are sequentially connected with a 16 th one-way check valve (16) to a 20 th one-way check valve (20) in the L one-way check valves through a 6 th electromagnetic valve (67) to a 10 th electromagnetic valve (71) of the I electromagnetic valves respectively; the other ports of the 37 th one-way check valve (37), the 39 th one-way check valve (39), the 41 st one-way check valve (41), the 43 rd one-way check valve (43) and the 45 th one-way check valve (45) in the L one-way check valves are sequentially connected with the 1 st oxygen gas storage tank (56) to the 5 th oxygen gas storage tank (60) in the P oxygen gas storage tanks respectively;
a port of a 38 th one-way check valve (38), a 40 th one-way check valve (40), a 42 th one-way check valve (42), a 44 th one-way check valve (44) and a 46 th one-way check valve (46) in the L one-way check valves are sequentially connected with a 1 st oxygen gas storage tank (56) to a 5 th oxygen gas storage tank (60) in the P oxygen gas storage tanks respectively; the other ports of the 38 th one-way check valve (38), the 40 th one-way check valve (40), the 42 th one-way check valve (42), the 44 th one-way check valve (44) and the 46 th one-way check valve (46) in the L one-way check valves are respectively communicated with the 2 nd electromagnetic valve group (101) in the I electromagnetic valves;
the 2 nd electromagnetic valve group (101) in the I electromagnetic valves is formed by cascading a 17 th electromagnetic valve (78), a 18 th electromagnetic valve (79), a 19 th electromagnetic valve (80), a 20 th electromagnetic valve (81) and a 21 st electromagnetic valve (82), and output ports of the 2 nd electromagnetic valve group are connected in a cascading way and are provided with a public output port;
the public output port of the 2 nd electromagnetic valve group (101) in the I electromagnetic valves is connected with the 23 rd one-way check valve (23) in the L one-way check valves through the 2 nd vacuum pump (85);
one end of a 47 th one-way check valve (47) in the L one-way check valves is connected with a 21 st one-way check valve (21) in the L one-way check valves through an 11 th electromagnetic valve (72) in the I electromagnetic valves; the other end of a 47 th one-way check valve (47) in the L one-way check valves is connected with a high-purity nitrogen storage tank (61); the other end of the high-purity nitrogen storage tank (61) is connected with a 24 th one-way check valve (24) in the L one-way check valves sequentially through a 48 th one-way check valve (48) in the L one-way check valves, a 22 nd electromagnetic valve (83) in the I electromagnetic valves and a 3 rd vacuum pump (86);
the programmable controller (102), the H relays, the I electromagnetic valves, the 1 st vacuum pump (84), the 2 nd vacuum pump (85) and the 3 rd vacuum pump (86) are arranged in the control box (130);
the monitoring host (128), the transmitter test tank (99), the control box (130) and the printer (129) are assembled on the operation table, the monitoring host (128) is connected with the programmable controller (102) through a network interface, and the monitoring host (128) is connected with the printer (129);
the programmable controller (102) is respectively connected with the 1 st relay (103) to the 25 th relay (127) in the H relays through control lines;
the 1 st relay (103) to the 22 nd relay (124) in the H relays are sequentially connected with the 1 st electromagnetic valve (62) to the 22 nd electromagnetic valve (83) in the I electromagnetic valves respectively;
the 23 rd relay (125) in the H relays is connected with the 1 st vacuum pump (84); the 24 th relay (126) in the H relays is connected with the 2 nd vacuum pump (85); the 25 th relay (127) in the H relays is connected with the 3 rd vacuum pump (86);
the programmable controller (102) is sequentially connected with the high-precision SF respectively through the communication port 6 The gas concentration transmitter (97), the high-precision oxygen content transmitter (98) and the 1 st to-be-calibrated transmitters (87) to the 10 th to-be-calibrated transmitters (96) and the temperature sensor (49) in the N to-be-calibrated transmitters are connected in a cascading mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312267.9A CN109142648B (en) | 2018-11-06 | 2018-11-06 | SF 6 Gas concentration and oxygen content composite transmitter calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312267.9A CN109142648B (en) | 2018-11-06 | 2018-11-06 | SF 6 Gas concentration and oxygen content composite transmitter calibration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109142648A CN109142648A (en) | 2019-01-04 |
| CN109142648B true CN109142648B (en) | 2023-09-22 |
Family
ID=64807582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811312267.9A Active CN109142648B (en) | 2018-11-06 | 2018-11-06 | SF 6 Gas concentration and oxygen content composite transmitter calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109142648B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855171B (en) * | 2023-03-02 | 2023-07-21 | 山东铁马电气科技发展有限公司 | On-line monitoring alarm system for gas in SF6 electrical equipment and implementation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424596A (en) * | 2008-09-26 | 2009-05-06 | 上海电力设备安装有限公司 | Calibration stand and calibration method for SF6 gas density and pressure monitoring device |
| CN102507649A (en) * | 2011-12-29 | 2012-06-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
| CN209132240U (en) * | 2018-11-06 | 2019-07-19 | 沈阳仪表科学研究院有限公司 | SF6The compound transmitter calibration system of gas concentration oxygen content |
-
2018
- 2018-11-06 CN CN201811312267.9A patent/CN109142648B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424596A (en) * | 2008-09-26 | 2009-05-06 | 上海电力设备安装有限公司 | Calibration stand and calibration method for SF6 gas density and pressure monitoring device |
| CN102507649A (en) * | 2011-12-29 | 2012-06-20 | 沈阳仪表科学研究院 | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device |
| CN209132240U (en) * | 2018-11-06 | 2019-07-19 | 沈阳仪表科学研究院有限公司 | SF6The compound transmitter calibration system of gas concentration oxygen content |
Non-Patent Citations (1)
| Title |
|---|
| 基于质量流量控制法的SF_6泄漏监测装置现场校验系统;余海泳;陈富强;连鸿松;卢亚娟;;科学家(第09期);第95-96页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109142648A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106772008B (en) | Pressure-controllable SF6 gas density relay signal simulation tester | |
| CN109737305B (en) | Inflation device for sulfur hexafluoride and nitrogen mixed gas and operation method of inflation device | |
| EP4027155A1 (en) | Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof | |
| US20230168302A1 (en) | Gas density relay with online self-checking function and checking method therefor | |
| CN111443283B (en) | Online verification device and online verification method for gas density relay | |
| CN201974278U (en) | Gas-tight tester | |
| CN202256131U (en) | Insulation status online monitoring system of sulfur hexafluoride inflatable-type current transformer | |
| CN102507649B (en) | SF6 (Sulfur Hexafluoride) micro-water content transducer calibration device | |
| CN109142648B (en) | SF 6 Gas concentration and oxygen content composite transmitter calibration system | |
| CN207962090U (en) | A kind of charging device of gas extinguishing agent | |
| CN111487017A (en) | Gas density relay with self-checking sealing performance and implementation method thereof | |
| CN203606339U (en) | Device for detecting sulfur hexafluoride leakage alarming instrument | |
| CN203825781U (en) | Self-calibration type sulfur hexafluoride gas leakage monitoring alarm device in GIS chamber | |
| CN111446112A (en) | Gas density relay with online self-checking function and checking method thereof | |
| CN103869710A (en) | Sulfur hexafluoride zero emission automatic gas supplementing and high voltage electrical equipment condition monitoring device | |
| CN202486084U (en) | SF6 micro-water content transducer calibration device | |
| CN102914488A (en) | Online monitoring device for mechanic-electrical integrated SF6 density moisture | |
| CN211719506U (en) | Gas density relay with online self-checking function and monitoring device | |
| CN210722875U (en) | Remote gas density relay system | |
| CN112710437A (en) | SF6Dry type vacuum leak detection system and leak detection method for breaker box body | |
| CN209132240U (en) | SF6The compound transmitter calibration system of gas concentration oxygen content | |
| CN110045200B (en) | Test calibration device of SF6 transmitter | |
| CN103196638A (en) | Closed composite apparatus rationing leakage detecting method | |
| CN204302438U (en) | The device of on-line monitoring can be carried out to multiple stage SF6 electric equipment state of insulation simultaneously | |
| CN201319034Y (en) | Sulphur hexafluoride device indoor gas content online monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |