SU1745980A1 - Apparatus for determining methane analyzer efficiency - Google Patents

Description

The invention relates to the mining, mining, oil and gas industry, in particular to devices performing health diagnostics, tuning and setting up methane analyzers in coal mines, communication headers and other facilities of these industries, where automatic systems and gas protection means are used, and be used for tuning, adjusting and diagnosing methane analyzers of the type AT1-1 and ATZ-1.

A device is known that contains channels of the levels of working capacity of the objects under test, indication circuits, and keys.

However, this device has a significantly greater number of health levels in the channels, which increases the cost of both the device itself and the work carried out on it, which makes it economically inefficient to diagnose the performance of methane analyzers. In addition, there is no specific information about a specific fault element in the device, which makes it difficult to eliminate this type of fault in a short time.

The closest in technical essence and the achieved result is a device containing a clock frequency generator, information board, automatic control unit.

However, the known device provides only the determination of the functionality of the functional units of the sensor, limiting the functionality of the device, namely the setting and adjustment of these elements.

A common disadvantage of prior art devices is the lack of specific information about a specific fault element, as well as a tuning element.

The purpose of the invention is to expand the functionality by adjusting and adjusting the functional units of methane analyzers.

The goal is achieved by introducing into the generator a precise concentration of methane, including a clock generator, counters, decoders, a switch, an indicator and a chain of series-connected resistors, the clock generator output being connected to the first counter input, the output of which in turn connected to the decoder, and the outputs of the latter to the switch set of resistors that specify the exact value of methane concentration by means of the unbalance of the measuring bridge, except In addition, the switch is connected to a clock generator, while the same generator output through

the contacts of the executive relays of the first and U of the second thresholds are connected to the inputs of the second i of the third counter, the outputs of which are connected to the exact values through the corresponding decoders

0 methane concentration. In addition, information boards with an exact indication of the location and type of a setting element influencing the change in the controlled parameter of a functional unit are introduced into the device, and a board for the performance of unregulated electrical elements, such as relays, optocouplers, is also entered. Along with this, a backup power supply unit is introduced, making it possible to carry out tuning,

0 adjustment and determination of the functionality of functional units in the event of a failure of the power supply unit of the methane analyzer.

FIG. 1 shows a functional diagram of the device; in fig. 2 is a diagram of the generator of exact values of methane concentration; in fig. 3 is a diagram of a power supply switch with an AND circuit; in fig. 4 - functional block diagram of the output parameters verification.

0 A device for determining the operability of methane analyzers contains a power source 1, a stabilizer unit 2, a monitored power supply unit 3, a power supply voltage testing unit 4, an AND 5 element, a power supply switch 6, a controlled execution unit 7. an output parameter testing unit 8, a unit 9 light indication, controlled node 10 alarm and indication,

0 block 11 threshold relays, generator 12 exact values of methane concentration, backup power block 13, nodes 3, 7, and 10 — monitored methane analyzer nodes. The device is made in the form of a metal welded frame, on which the front, back, top and two side walls are fixed. Inside the device, the power supply 1 is electrically inserted, which outputs the supply voltage to unit 2

0 stabilizer, and the stabilizer unit is connected to the monitored power supply unit 3, the output of which is connected to the unit 4 for checking the supply voltages, which is in turn connected through the AND 5 circuit to the switch

5 power sources, wherein the output of the monitored power supply unit 3 and the output of the backup power supply unit are connected to the inputs of the switch 6 litany sources, the output of which is connected to the controlled execution unit 7, and its outputs are connected

through the output parameter verification unit 8 with the light indication unit 9 and the monitored and indicated unit 10 monitored, in addition, the additional inputs of the monitored executive unit are connected to the output of the stabilizer unit 2 and the generator output 12 of the exact methane concentration, the output of the power supply switch 6 is connected the input of the monitored alarm and indication unit 10, the output of which is connected with the input of the monitored power supply unit 3. In addition, the stabilizer unit 2 is connected to the generator input 12 exact values of methane concentration through the block 11 threshold relays, and the power source 1 via the backup power unit 13 is connected to the switch 6 of the power sources.

After connecting the device to the AC mains from the power source 1, the supply voltage 127 V, 50 Hz is supplied to the stabilizer unit 2 and the voltage 52 V, 50 Hz is supplied to the backup power unit 13. At the same time, on the front panel, the light of the vehicle power indicators of the network, the indicators of the unit 4 for checking the supply voltage, the board OSL of the generator 12 exact values of methane concentration. After that, functional nodes of the monitored methane analyzer are connected to the connectors of the device: power supply unit 3, executive unit 7, signaling and indication unit 10. In this case, a monitored power supply unit 3 is supplied with a stabilized voltage of 52 V, 50 Hz from a stabilizer unit 2, the output voltages of the power supply unit 3 being monitored to power supply unit A and checking the supply voltages and to the power supply switch 6.

When the monitored unit 3 is operational, the light is green light-emitting diodes, indicating that the stitching voltage is normal, and the backup power supply 13 is automatically turned off. In the event of a malfunction, the supply voltage testing unit 4, via element 5, sends a fault signal to the electronic relay 14 of the power supply switch 6, which contacts 14.1 breaks the connection between the output of the monitored power node 3 and the inputs of the monitored actuator 7 and the monitored signaling node and indication, and contacts 14.2 establish a connection between the backup power unit 13 and the inputs of the execution unit. 7 and node 10 alarm and display. At the same time, the location and the type of the regulating element are displayed on the light panel of the node 10, which makes it possible to adjust the controlled node 3 of the power supply. In addition, a variable stabilized voltage of 52 V, 50 Hz is applied to the optocouplers of the controlled actuating unit 7 from the output of the stabilizer unit 2. The unit 8 for checking the output parameters serves to display on the LED indicators of the unit 9 for light indication of monitored parameters of the executive unit 7, such as the output current of the telemetry amplifier, output voltages and operability of optocouplers. If any of the parameters deviate from the acceptable values, the electronic part

5 of the block of the block 8 for checking the output parameters outputs a signal to the LED indicators of the block 9 of the light indication, showing the location and type of the setting element that influences the change

0 monitored parameter node 7 (figure 4). The generator of the exact values of methane concentration works as follows. The contacts of the Start button (FIG. 2) start a clock frequency generator 15 at the output

5 which produces a sequence of 1 Hz rectangular pulses, which is fed to the input of the first counter 16, which converts the pulses into a binary four-digit code that controls the operation of the decoder 17, the output of which controls the operation of the switch 18, performing a series of resistors 19 calibrated respectively, methane concentration with an accuracy of 0.1 CH3 in the range of 0.5-2.0 CH4, to the output of the controlled actuating unit 7. In addition, the same sequence from the clock frequency generator Without contacts of the relay of the first and second thresholds, respectively, 11.1 and 11.2 is fed to the input of the second counter 20 and the third counter 21, converting this sequence into a binary four-bit code, which is fed to the corresponding decoders 22 and 23 with the indicator of exact concentration values connected to their outputs methane 0.5-2.0 CH4 with a step corresponding to the step set resistors 19. Then when connected to the input of the controlled actuator 7 of the resistor corresponding to the first threshold, the relay is de-energized ervogo threshold in block 11 and their contacts 11.1 interrupts passage

5 clocks to the input of the second counter 20, after which the value of the first threshold value is displayed on the indicator 24. The device operates similarly when the second threshold of protection is reached.

When the full cycle of switching of the set of resistors 19 passes through the switch 18, a Stop signal is sent to the clock generator 15. Indicator 24 highlights the values of the first and second trigger thresholds and set-. The methane concentration is 2.5 CH4. The circuit returns to its original state by opening the contact of the Reset button. .

As a result of testing with an accuracy of 0.1 VSS, the first and second trigger thresholds are measured, the operability of the optocouplers of the monitored actuator 7, the LED indicators of the first and second thresholds of the monitored node 10 of the alarm and indication are checked, and also the adjustment of the executive node and of the signaling and indication unit at the values of O CH4 and 2.5.

Thus, the advantage of the invention is the expansion of functionality by adjusting and adjusting the functional units of methane analyzers by introducing into the generator device 12 exact values of methane concentration, placards with precise indication of the location and type of setting element and the unregulated electrical grid. - cops. Along with this, a backup power supply unit 13 was introduced, which allows for setting up and adjusting and determining the operability of the monitored functional units 7 and 10 in the event of a malfunction of the monitored unit 3, powering the methane analyzer.

Claims (1)

Apparatus of the Invention A device for determining the operability of methane analyzers comprising a power source connected through a stabilizer unit with a threshold relay unit, an And element, a light indication unit, characterized in that, in order to extend the functionality by adjusting and adjusting the functional units of the methane analyzer, a power supply test unit, a power supply switch, an accurate generator are introduced into it concentrations of methane, a backup power supply, while the output of the block of threshold relays through the generator of exact values of methane concentration is connected to the first input of the supervised control unit, the second input of which is connected to the output of the block a stabilizer connected to the first input of the monitored power supply node, the output of which is connected to the power supply test unit, the output of which is connected to the first input of the lithium source switch through the AND element, the second input of the latter is connected to the output of the monitored power supply node, and the third input is connected to the output backup power supply unit connected to the power supply the switch of power supply units is connected to the third input of the controlled execution unit and to the first input of the monitored signaling and indication unit, the second input of which is connected to the first the output of the controlled execution unit, the second output of which is connected to the input of the light indication unit, and the output of the monitored signaling and indication unit is connected to the second input of the monitored power supply unit. sixteen is wxof If L,  J R  J Fig.Z eight xx  „Mito Xx -ts- Ri & uh: xx Vr, A22STO -YA- L „Ipronch i p Xx  „Onmpoutt n & asp Xx -Y- „5 // and, CI neistr.