Lighting device in the oil concentration monitoring system in compressed gas of a compressor station

Abstract

FIELD: lighting devices.SUBSTANCE: lighting devices in a system for monitoring the concentration of oil in compressed gas at a compressor station, determining the concentration of oil vapor impurities in the compressed gas and preventing a possible emergency explosive situation when the maximum permissible concentration is reached using mineral or synthetic oils. The control of impurity concentration is based on the physical principle of operation - glow (fluorescence) in a light flux of ultraviolet radiation. The lighting device in the system generates a pulse of ultraviolet radiation spectrum with a frequency of approximately 10-12 minutes, directed to the oil concentration control device. In this case, a lamp of the INP-5 / 45A type with external ignition is used as a lighting device with electrical and design characteristics that ensure the functioning of the oil concentration control device. During the time of formation of pulsed radiation of the ultraviolet spectrum, the lighting device uses only the AC voltage source generated from an external AC voltage source, which, in combination with the rational selection of the lighting device components, ensures optimal control of the lamp and practically does not create interference that affects the reliability and efficiency of the uninterrupted operation of the device for monitoring the concentration of oil in the compressed gas of the compressor station.EFFECT: reduction in interference from the lighting device while ensuring reliable and uninterrupted operation of the oil concentration monitoring system in the compressed gas of the compressor station.1 cl, 1 dwg

Description

[0001] Purpose

[0002] The invention relates to lighting devices in a system for monitoring the concentration of oil in compressed gas of a compressor station, determining impurities in the compressed gas of the concentration of oil vapors and preventing a possible emergency explosive situation when the maximum permissible concentration is reached using mineral or synthetic oils.

[0003] Technology Level

[0004] When operating compressor stations, regardless of the type of oil used, the compressed gas contains impurities (impurities in the form of oil vapor when using mineral or synthetic oils) that have maximum permissible explosive concentrations. Therefore, they are subject to mandatory monitoring in accordance with fire and explosion safety requirements (see, for example, "Fire Hazard and Toxicity of Fuels and Oils." On the website: https: / / allrefrs.ru / 2-24434.html).

[0005] At the same time, for the reliable and efficient uninterrupted operation of the oil concentration monitoring system in the compressed gas of the compressor station, the most important device is the ultraviolet radiation lighting device - the basis for monitoring the concentration of impurities in the compressed gas, since the control of impurities is based on the physical principle of operation - glow (fluorescence) in the light flux of ultraviolet radiation of impurities, in the form of oil vapor, in the compressed gas.

[0006] In known devices for monitoring the concentration of oil in compressed gas at a compressor station (see, for example, patents, Russian Federation, No. 2813216, 2828646), the lighting device is presented functionally and there is no electrical circuit for it, however, the performance of the pulse emitting device, as well as the reduction of interference that negatively affects the reliability and efficiency of the oil concentration monitoring device using mineral or synthetic oils, significantly depends on the design of the electrical circuit.

[0007] When monitoring the oil vapor concentration in compressed gas at a compressor station, the sampled gas is analyzed in a high-pressure chamber designed for pressures up to 40 MPa, where a fluorescent glow of the analyzed medium is generated. This fluorescent glow, passing through a viewing window, is converted into an electrical signal in a photodetector. The output device is a highly sensitive photomultiplier tube (PMT), which has a low oscillating background signal level and is highly sensitive to various interferences.

[0008] The aforementioned patents utilize an INP-5 / 45A lamp as the emitting device with electrical and design characteristics that ensure the operation of the oil concentration monitoring device. Therefore, for further analysis of lamp control devices in lighting fixtures and their rational selection, we present the following electrical and design characteristics of the INP-5 / 45A lamp (see, for example, INP Pulsed Laser Pumping Lamps).

[0009] On the website: https: / / www.znt.ru / index.php / catalog / flash-lamps-inp):

[0010] • Ignition pulse amplitude - 18 kV;

[0011] • working voltage - 500-1500 V;

[0012] • Maximum average power - 1500 W;

[0013] • maximum working current - 800 A;

[0014] • lamp outer diameter - 7.1 mm;

[0015] • Overall length of the lamp - 165 mm.

[0016] Depending on the method of supplying the high-voltage pulse to the lamp, a distinction is made between internal and external lamp ignition (see, for example: 1. Schemes for igniting pulse lamps. On the website: https: / / studopedia.net / 19_108923_shemi-podzhiga-impulsnih-lamp.html. 2. Types of ignition. On the website: https: / / scitc.ru / ru / blog / 118-lampy-nakachki-chast-5). With internal lamp ignition, the initiating pulse is supplied to the discharge circuit of the lamp using a pulse ignition transformer, the secondary winding of which is connected in series or parallel with the lamp. This lamp ignition is practically unacceptable for the lighting device in the proposed invention, due to the fact that these circuits require powerful power switching elements for switching large currents (maximum operating current - 800 A), as well as a transformer with a large mass and large dimensions.Moreover, switching interference, including that from large surges in electromotive force occurring on the transformer's primary winding, leads to malfunctions in the oil concentration monitoring system, primarily due to failure of the highly sensitive photomultiplier tube. The proposed invention makes it practical to use external lamp ignition, in which a high-voltage pulse from the step-up transformer is applied to a nickel wire wrapped around the lamp. This is the simplest and most cost-effective ignition method. The step-up transformer is lightweight and compact. Using a transformer in the output circuit eliminates the problem of impedance matching.

[0017] A "Device for Igniting a Gas-Discharge Lamp" is known (patent, Russian Federation. No. 995392). This device comprises a piezotransistor converter using a piezotransformer, an amplifier, a threshold element, terminals for connecting to a power source and terminals for connecting a gas-discharge lamp, wherein the output of the piezotransistor converter is connected to the output for connecting the ignition electrode of the gas-discharge lamp, and its input is connected to the output of the amplifier, while, in order to increase the reliability of lamp ignition, the device is equipped with an integrating element, the input of which is connected to the output of the threshold element, connected by its input to the terminals for connecting to a power source, connected to the terminals for connecting the gas-discharge lamp.

[0018] The use of a magnetically insensitive piezoelectric transformer in this device allows for minimizing the size of ignition devices, creating highly efficient high-frequency power supplies with an efficiency of up to 95%, eliminating inductive, capacitive, and some active components in power supplies, and, accordingly, increasing reliability and reducing the cost of the product (see, for example, New Applications of Piezoelectric Transformers. Available at: https: / / kit-e.ru / novye-oblasti-primeneniya-pezotransformatorov / ). A piezoelectric transformer can be used to provide external ignition of gas-discharge lamps. However, as shown by the studies cited in the above-mentioned source, when voltage from a piezoelectric transformer was applied to a wire wound on the lamp housing, the lamp reliably ignited from a 1.5-2 kV source with an output power of no more than 40 W.

[0019] As noted above, to ensure the operability of the oil concentration monitoring system in compressed gas at the compressor station, the pulsed ultraviolet light source uses a 5 / 45A lamp with an ignition pulse amplitude of 18 kV and a maximum average power of 1500 W. Therefore, a gas discharge lamp ignition device with a piezoelectric transformer cannot be used in the lighting device in the oil concentration monitoring system in compressed gas at the compressor station due to its low power rating.

[0020] "Lighting device with a direct current gas discharge lamp" is known (patent, RU 2068627).

[0021] This device comprises a series-connected unstabilized power source and a stabilized power source with a regulating key, the inputs of which are connected to the terminals for connection to the AC network, a decoupling diode connected between one of the poles of the unstabilized power source and one of the electrodes of the gas-discharge lamp, a feed-in unit, the positive pole of which is connected to the cathode of the said diode, an ignition unit, the output of which is connected to the electrodes of the gas-discharge lamp, and a current sensor, characterized in that two threshold devices are introduced, a time relay, a DC feedback amplifier, a DC amplifier simulating a feedback signal, a pulse-width modulator with a sawtooth voltage generator synchronized with the network voltage, and a dimmer, while between the positive pole of the stabilized power source and the anode of the gas-discharge lamp, the said current sensor is connected,the signal from which is fed to the input of the first threshold device, one of the outputs of which is connected to the winding of the time relay, and the other to the control input of the power supply unit, the negative pole of which is connected to the cathode of the gas-discharge lamp, connected to the anode of the decoupling diode, the cathode of which is connected to the negative pole of the unstabilized power source, the second threshold device is connected with the input to the output of the power supply unit, and with the output to the control input of the ignition unit, the inverting input of the feedback direct current amplifier is connected through the first closing contact of the said time relay to the anode of the gas-discharge lamp, the non-inverting input to the dimmer, and the output through the second closing contact of the same time relay to the input of the pulse-width modulator, the output of the control key of the stabilized power source connected to the control electrode, wherein the input of the pulse-width modulator is also connected to the output of the direct current amplifier,simulating a feedback signal through the normally open contact of the specified time relay.

[0022] The disadvantage of this device is that when the lamp generates pulsed ultraviolet light, the AC voltage source powering the lighting device is not switched off, resulting in malfunctions in the oil concentration monitoring system due to interference from it, including interference from the relay switching contacts, primarily due to malfunctions in the highly sensitive photomultiplier.

[0023] A device for monitoring the concentration of oil in compressed gas at a compressor station is known (patent, Russian Federation, No. 2813216), taken by the authors as a prototype. In this device, the lighting device is functionally presented in the form of a pulsed ultraviolet radiation source containing a pulse lamp and a lamp ignition key, with a start pulse generator connected to it. The lighting device directs pulses of the ultraviolet radiation spectrum to the oil concentration monitoring device containing a high-pressure chamber in the form of a flow cell for the analyzed gas, equipped with sight glasses and a flow limiter installed at the outlet, an optical system for shaping the excitation radiation of the analyzed gas, the first photodetector of the intensity of the exciting radiation, placed before the cuvette on an axis perpendicular to the optical axis with the radiation source, a second photodetector for recording the excited radiation,passed through the viewing glass of the cuvette, located behind the cuvette on an axis perpendicular to the optical axis with the radiation source, a third photodetector device for recording the radiation passed through two viewing glasses of the cuvette, located on the same optical axis with the radiation source, a signal generating and control device containing an amplifier with an adjustable gain factor, an amplifier with a controlled gain factor, a device health signal generator, a differential amplifier, as well as a first and second indicator device), wherein the outputs of the first, second and third photodetector devices are connected to the inputs of the signal generating and control device, the output signal of which, through the control computing complex of the compressor station, controls the supply of gas to the high-pressure chamber.

[0024] The disadvantage of this device is that the electrical circuit of the lighting device is not provided, the rational choice of which, including the reduction of "parasitic" interference, is the basis for monitoring the concentration of impurity oil vapor in compressed gas in the high-pressure chamber, which significantly affects the reliability and efficiency of the uninterrupted operation of the device for monitoring the concentration of oil in compressed gas of the compressor station.

[0025] The purpose of the proposed invention is to reduce interference from the lighting device while ensuring reliable and uninterrupted operation of the oil concentration monitoring system in the compressed gas of a compressor station.

[0026] Disclosure of invention

[0027] The essence of the proposed invention is that during the time of formation of pulsed light radiation of the ultraviolet spectrum by the lighting device, only an alternating voltage source generated from an external source of alternating voltage is used, which, in combination with a rational choice of the components of the lighting device, ensures optimal control of the lamp and practically does not create interference that affects the reliability and efficiency of the uninterrupted operation of the system for monitoring the concentration of oil in the compressed gas of the compressor station.

[0028] A lighting device in a compressed gas oil concentration monitoring system of a compressor station includes a pulse lamp that directs ultraviolet spectrum pulses to an oil concentration monitoring device containing a high-pressure chamber, an optical system, a first, second and third photoreceiver, a signal generating and monitoring device, a controlled computing system and a compressor station.

[0029] By introducing an AC power source into the lighting device, the influence of interference from an external AC power source during the formation of an ultraviolet radiation spectrum pulse is eliminated.

[0030] By introducing a symmetrical thyristor controlled by an opto-simistor, upon receipt of the "Start of Charge" signal from the first output of the control system, an external AC power source is connected to the AC power source being generated.

[0031] By introducing three constant voltage sources, the required power supply of the devices is provided when generating a pulse of the ultraviolet radiation spectrum, while ensuring their galvanic isolation.

[0032] By introducing a threshold device, when the maximum voltage is reached at the DC voltage outputs, a “Charge End” signal is generated, which is sent to the input of the control system.

[0033] By introducing a thyristor, a second transformer and an external winding on the lamp, the lamp is ignited by the "Discharge" signal from the second output of the control system, resulting in a single flash when the high-voltage capacitor is discharged through the lamp.

[0034] Graphic illustrations

[0035] Figure 1 shows the electrical circuit diagram of the lighting device and the structural circuit diagram of the oil concentration monitoring device in the oil concentration monitoring system in the compressed gas of the compressor station, containing components with the positions indicated by numbers:

[0036] 1 - VIPPN (external power supply of alternating voltage 220 V); 1-1 - threshold device;

[0037] 2 - OS (optical system for generating excitation radiation of the analyzed gas);

[0038] 3 - FU1 (first photodetector);

[0039] 4 - FU2 (second photodetector);

[0040] 5 - high pressure chamber;

[0041] 6 - viewing windows;

[0042] 7 - OR (flow limiter);

[0043] 8 - FU3 (third photodetector);

[0044] 9 - CS (compressor station);

[0045] 10 - Control computing complex (CCC);

[0046] 11 - UFSiK (signal generation and control device);

[0047] 12 -UKKM (oil concentration control device);

[0048] 13 - FIPPN (generated power supply of alternating voltage 220 V);

[0049] 14 - VIP (secondary power supply);

[0050] 15, 16 - respectively the first and second transformer;

[0051] 17 - lamp (lamp with external ignition);

[0052] 18 - external wire winding on the lamp;

[0053] 19, 20, 21 - respectively, the first, second and third capacitor;

[0054] 22 - thyristor;

[0055] 23 - throttle;

[0056] 24, 25, 26 - respectively the first, second and third diode bridge; 27-39 - thirteen resistors;

[0057] 39, 40 - respectively the first and second transistor;

[0058] 41 - diode optocoupler;

[0059] 42 - zener diode;

[0060] 43 - optosimistor;

[0061] 44 - symmetrical thyristor;

[0062] 45 - SU (control system);

[0063] 46 - OU (lighting device).

[0064] Implementation of the invention

[0065] The lighting device 46 in the system for monitoring the concentration of oil in the compressed gas of the compressor station includes a pulse lamp 17 directing pulses of the ultraviolet radiation spectrum into the oil concentration monitoring device 12 containing a high-pressure chamber 5 in the form of a flow-through cuvette for the gas being analyzed, equipped with viewing glasses 6 and a flow limiter 7 installed at the output, an optical system 2 for generating excitation radiation of the gas being analyzed, a first photodetector 3 of the intensity of the exciting radiation, placed before the cuvette on an axis perpendicular to the optical axis with the radiation source, a second photodetector 4 for recording the excited radiation passed through the viewing glass 6 of the cuvette, placed behind the cuvette on an axis perpendicular to the optical axis with the radiation source, a third photodetector 8 for recording the radiation passed through two viewing glasses 6 of the cuvette,located on the same optical axis as the radiation source, a signal generation and control device 11, wherein the outputs of the first 3, second 4 and third 8 photoreceiving devices are connected to the inputs of the signal generation and control device 11, the output signal of which, through the control computing complex 10 of the compressor station 9, controls the supply of gas to the high-pressure chamber 5.

[0066] The device is additionally provided with first 15 and second 16 transformers, first 24, second 25 and third 26 rectifier diode bridges, first 19, second 20 and third 21 capacitors, thyristor 22, choke 23, opto-triac 43, symmetrical thyristor 44, control system 45 and threshold device 1-1 containing first 39 and second 40 transistors, opto-coupler diode 41, zener diode 42, first 30 and second 31 resistors connected in series, the connection point of which is connected to the base of first transistor 39, and their terminals are, respectively, the first and second input of threshold device 1-1, connected, respectively, to the positive terminal of the second 20 and negative terminals of the second 20 and third 21 capacitors, the positive terminal of which is connected to the third input of threshold device 1-1, connected through the third resistor 32 to the emitter of the first transistor 39 and the cathode of the zener diode 42,and also through the fourth resistor 33 and through the LED of the diode optocoupler 41 connected to the collector of the first transistor 39, the collector of the second transistor 40 is connected through the fifth resistor 34 to the cathode of the diode optocoupler 41, which is the fourth input of the threshold device 1-1, and the positive bus of the secondary power source VIP 14 and is the output of the threshold device 1-1, connected to the input of the control system SU 45, wherein the anode of the photodiode of the diode optocoupler 41 is connected to the base of the second transistor 40 and through the sixth resistor 35 to the ground connected to the emitter of the second transistor 40 and to the negative bus of the secondary power source VIP 14, the positive bus of which is connected through the seventh resistor 37 to the anode of the diode of the opto-simistor 43, the cathode of which is connected to the first output of the control system SU 45,and the triac in the opto-triac 43 is connected by one terminal through the eighth resistor 38 to the second terminal of the external AC power source VIPPN 1 and one terminal of the symmetrical thyristor 44, the control input of which is connected to the second input of the triac in the opto-triac 43 and through the ninth resistor 39 to the second input of the symmetrical thyristor 44 and to the second terminal of the generated AC power source FIPPN 13, the first terminal of which is connected to the first terminal of the external AC power source VIPPN 1 and through the tenth resistor 36 to its second terminal, in addition, the first and second terminals of the generated AC power source FIPPN 13 are connected through the first transformer 15 to the first 24, second 25 and third 26 rectifier bridges, at the outputs of which the third 21, through the eleventh resistor 28 the first 19 and through are connected in parallel, respectively. the twelfth resistor 29 the second 20 capacitor,the negative terminal of which is connected to the ground and the cathode of the thyristor 22, the control input of which is connected to the second output of the control system 45, and the anode - to the first terminal of the primary winding of the second transformer 16 and through the thirteenth resistor 27 with the positive terminal of the first capacitor 19 and with the second terminal of the primary winding of the second transformer 16, the first terminal of the secondary winding of which is connected through the choke 23 with the positive terminal of the second capacitor 20 and one electrode of the lamp 17, the second electrode of which is connected to the negative terminal of the second capacitor 20, wherein the second terminal of the secondary winding of the second transformer 16 is connected to the external winding of the wire on the lamp 18.

[0067] Description of the operation of the lighting device in the oil concentration monitoring system in the compressed gas of the compressor station

[0068] The prototype uses a lamp with an external ignition type INP-5 / 45A, which provides the required ultraviolet radiation indicators for monitoring the concentration of oil in the compressed gas of a compressor station, based on the physical principle of operation - glow (fluorescence) in the light flux of ultraviolet radiation of an impurity in the form of oil vapor when using mineral or synthetic oils.

[0069] Therefore, when describing the proposed device shown in Fig. 1, as an example, we will consider a lamp of the INP-5 / 45A type with nickel wire wound on it (with external winding of wire on lamp 18) to provide external ignition.

[0070] Lamp 17 provides ultraviolet spectrum radiation, and optical system 2 ensures the extraction of the ultraviolet part of the radiation spectrum (approximately close to a wavelength of 360 nm). Lamp 17 operates in a pulsed mode, in which its "flash" occurs once in the range of approximately 10 min. to 12 min., which determines the cyclical nature of the polling and generation of signals based on the concentration of oil vapor impurity in the compressed gas in high-pressure chamber 5, designed as a flow cell (designed for a pressure of up to 40 MPa), while the analyzed gas from high-pressure chamber 5 enters flow limiter OP 1; and then is discharged from it into the atmosphere.Ultraviolet radiation, passing through the first photodetector FU13 and the third photodetector FU38, is converted into electrical signals, which are fed to the first and second inputs of the signal generation and control device UFSiK 11, respectively. The third input of the device receives the electrical signal from the output of the second photodetector FU24, which converts the fluorescent glow of the analyzed medium in the high-pressure chamber 5 into an electrical signal. The output device of the second photodetector FU24 is a highly sensitive photomultiplier tube, which has a low oscillating background signal level and is significantly sensitive to various interferences.

[0071] The generated output signal of the UFSiK 11 through the control computing complex 10 of the compressor station 11 controls the supply of gas to the high-pressure chamber 5.

[0072] A detailed description of the oil concentration control device USKM 12 is given in the prototype.

[0073] Let's consider the operation of lighting device 46, i.e., the process of generating pulsed ultraviolet radiation by lamp 17. The main power source for lighting device 46 is an external 220 V AC power supply (VIPPN 1), which can be an AC power source from a 220 V, 50 Hz network or a 220 V AC power source from a generator.

[0074] In the initial state, there is no voltage at the output of the generated AC voltage source FIPNP 13 (on the primary winding of the first transformer 15), therefore, there is also no voltage at the electrodes of lamp 17, including the external winding of the wire on lamp 18. The use of the generated AC voltage source FIPNP 13 is due to the fact that voltage on it should only be present at the moment of generating a pulse of ultraviolet light emission by lamp 17. At the same time, maximum isolation from the external 220 V AC power source VIPPN 1 must be ensured, i.e., FIPNP 13 is practically disconnected from VIPPN 1.

[0075] This ensures high reliability and a long service life of lamp 17, and also eliminates the “parasitic” effects of interference from the external 220 V AC power source VIPPN 1 on the smooth operation of the UKKM 12 oil concentration monitoring device.

[0076] Let's consider the process of forming the FIPNP 13 and disconnecting it from the VIPPN 1. The first terminal of the external 220 V AC power source VIPPN 1 is directly connected to the first terminal of the formed AC voltage source FIPNP 13.

[0077] When the "Start of charging" signal is supplied from the first output of the control system SU 45 to the cathode of the LED of the opto-simistor 43 (in the form of a low voltage, close to zero value), current flows through it from the positive bus of the secondary power source VIP 45 through the resistor 37 to the negative bus of the power source VIP 45, connected to the ground. When the LED illuminates the triac (bidirectional switch) in opto-triac 43, it opens, ensuring the flow of current through the circuit: second terminal of the opto-triac 1 - resistor 38 - open triac in opto-triac 43 - resistor 39 - resistor 36 - first opto-triac 1, as well as the flow of the triggering current through the control input of symmetrical thyristor 44, as a result of which it opens, thereby ensuring the supply of voltage from the second terminal of the opto-triac 1 through the open symmetrical thyristor to the second terminal of the opto-triac 13.

[0078] The alternating voltage 220 from the output of the rectifier diode bridge 13 is fed to the primary winding of the first transformer 15, on the secondary windings of which alternating voltages are formed, which are converted through the first 24, second 25 and third 26 rectifier diode bridges (see, for example, "Diode Bridge". On the website: https: / / www.220ac.by / blog / diodnyj_most_princip_raboty / ) into positive half-waves of voltages, while the secondary windings of the first transformer 15 are selected in such a way that the voltages at the outputs of the first 24, second 25 and third 26 rectifier diode bridges with capacitors at their outputs, respectively, the third 21, first 19 and second 20, form approximately the following constant voltages:

[0079] • at the output of the third 21 capacitor - 28 V;

[0080] • at the output of the first 19 capacitor - 250 V;

[0081] • at the output of the second 20 capacitor - 1000 V.

[0082] When voltage appears at the output of the generated AC voltage source FIPN 13, a constant voltage is generated at the output of the first diode bridge 24, and the first capacitor 19 begins to charge from the output of the second diode bridge 25 through the resistor 28 and the second capacitor 20 from the output of the third diode bridge 26 through the resistor 29, while the following condition is ensured:

[0083]

[0084] where t зар.с19 - charging time of the first capacitor 19;

[0085] t зар.с20 - the charging time of the second capacitor 20. Upon completion of the charging process, the voltages on the first capacitor 19 and the second capacitor 20 reach approximately the maximum values, respectively, approximately 250 V and 1000 V. Upon reaching the maximum voltage value U макс.с20On the second capacitor 20, the maximum value of the current flowing through the circuit connected to it in parallel is achieved, in the form of two series-connected resistors 30 and 31, the terminals of which are, respectively, the first and second inputs of the threshold device 1-1. In this case, the maximum value of the voltage drop U is achieved макст.R31 on resistor 31, corresponding to the condition:

[0086] where

[0087] R 30 - resistor resistance 30; R 31 - resistor resistance 31;

[0088] U бэ.Т39 - base-emitter voltage of open transistor 39 (approximately 0.5 V); U oп. - voltage on the zener diode 42.

[0089] When the condition of expression (2) is met, the first transistor 39 opens, ensuring the flow of current through the circuit: the positive terminal of the third capacitor 21 (connected to the third input of the threshold device 1-1) - resistor 33 - LED of the diode optocoupler 41 - open collector-emitter junction of the first transistor 39 - zener diode 42 - negative terminal of the third capacitor 21, i.e. the diode optocoupler 41 goes into the on state.

[0090] It should be noted that the original reference voltage U oп. on the zener diode 42 is provided by the current flowing through it along the circuit: positive terminal of the third capacitor 21 - resistor 32 - zener diode 42 - negative terminal of the third capacitor 21.

[0091] When the diode optocoupler 41 is on, due to the photodiode being illuminated by the LED, the photodiode (whose cathode is the fourth input of the threshold device 1-1) converts light into electric current, ensuring the current flow along the circuit: the positive bus of the secondary power source VIP 45 - the photodiode of the diode optocoupler 41 - the resistor 35 and the base-emitter junction of the second transistor 40 - the negative bus of the secondary power source VIP 45 (the current in the photodiode is directed from the cathode to the anode; see, for example, Photodiode. On the website: https: / / znaniemssia.ru / articles / ), as a result of which the second transistor 40 opens and from its collector, which is the output of the threshold device 1-1, a "Charge End" signal in the form of a low voltage close to zero is sent to the input of the control system SU 45.

[0092] Note - as a secondary power source for VIP 14, it is advisable to use a power source with an output voltage of 5 V or a power source with an output voltage of 15 V, used in the SKKM 12 oil concentration monitoring system to power microcircuits with logic elements or microcircuits with operational amplifiers, respectively.

[0093] When implementing the invention, one can use, for example:

[0094] • as the first diode bridge 24 - microcircuit 542ND1;

[0095] • as the second diode bridge 25 - four D237K diodes;

[0096] • as the third diode bridge 26 - post 2Ts108A;

[0097] • transistor 2T117A as transistors 39 and 40;

[0098] • as a zener diode 42 - zener diode 2C117A;

[0099] • as a diode optocoupler 41 - diode optocoupler AOD130A;

[0100] • as opto-simistor 43 - opto-simistor AOU179A;

[0101] • as a symmetrical thyristor 44 - symmetrical thyristor C222-20-7-5;

[0102] • as capacitors 20, 21 - capacitor K73-16 of the corresponding voltage and corresponding capacity.

[0103] In this case, to obtain the required total capacity and permissible operating voltage, a series-parallel connection of capacitors for capacitor 20 is possible (see, for example, "Connecting capacitors" on the website: http: / / www.sxemotehnika.ru / soedinenie-kondensatorov.html):

[0104] • when connected in series, the total capacitance is C общ.послед. is determined from the formula

[0105]

[0106] where m is the number of series-connected capacitors;

[0107] • when connected in parallel, the total capacitance is C общ.парал. is determined by the formula

[0108] where k is the number of capacitors connected in parallel.

[0109] When the "End of Charge" signal is received at the input of the control system SU 45, it sends the "Discharge" signal from the second output in the form of a pulse to the control input of the thyristor 22, then stops sending the "Start of Charge" signal from the first output of the control system SU 45 to the cathode of the LED of the opto-thyristor 43. As a result of sending the "Discharge" signal to the control input of the thyristor 22, it opens, thereby ensuring the discharge of the first capacitor 19 along the circuit: positive terminal of the first capacitor 19 - primary winding of the second transformer 16 - open thyristor 22 - negative terminal of the first capacitor 19.The discharge voltage pulse on the primary winding of the second transformer 16, taking into account the transformation ratio of this transformer, is transformed into a high-voltage voltage pulse on its secondary winding, which is fed to the external winding of the wire on the lamp 18 (one terminal of the wire winding on the lamp 18 is connected to the first terminal of the secondary winding of the second transformer 16 and the positive electrode of the lamp 17, connected to the terminal of the choke 23, and the second terminal of the wire winding on the lamp 18 is connected to the second terminal of the secondary winding of the second transformer 16), as a result of which, the ignition of the lamp 17 is ensured, in the form of a breakdown of the interelectrode gap. The lamp 17 goes into the active state, whereby the discharge current of the second capacitor 20 through the choke 23 forms a current pulse in the lamp, causing its one-time "flash".

[0110] Experimental studies have shown that effective ignition of the INP-5 / 45A lamp is ensured by winding 6 turns of DKRNT nickel wire, 0.4 mm in diameter, on it, according to GOST 2179-75 (grade KTNP2).

[0111] When the "Start of charging" signal from the first output of the control system SU 45 to the cathode of the LED of the opto-simistor 43 is stopped, the triac in the opto-simistor 43 is closed, thereby closing the symmetrical thyristor 44, as a result of which the supply of alternating voltage from the external source of alternating voltage VIIPN 13 to the generated source of alternating voltage FIIPN 13 is stopped, which goes into its initial state.

[0112] It should be noted that the closing of the symmetrical thyristor 44 occurs at a low voltage, close to zero, which eliminates the formation of interference during its closing, affecting the operation of the devices of the SKKM 12 oil concentration monitoring system.

[0113] To form the next flash of lamp 17, the above processes are repeated after approximately 10-12 minutes.

Claims

A lighting device in a system for monitoring the concentration of oil in compressed gas of a compressor station includes a pulse lamp directing pulses of the ultraviolet radiation spectrum into an oil concentration monitoring device containing a high-pressure chamber in the form of a flow-through cuvette for the gas being analyzed, equipped with viewing glasses and a flow limiter installed at the outlet, an optical system for generating excitation radiation of the gas being analyzed, a first photodetector of the intensity of the exciting radiation, placed before the cuvette on an axis perpendicular to the optical axis with the radiation source, a second photodetector for recording the excited radiation that has passed through the viewing glass of the cuvette, placed behind the cuvette on an axis perpendicular to the optical axis with the radiation source, a third photodetector for recording the radiation that has passed through two viewing glasses of the cuvette, located on the same optical axis with the radiation source,a signal generation and control device, wherein the outputs of the first, second and third photodetector devices are connected to the inputs of the signal generation and control device, the output signal of which, through the control computer complex of the compressor station, controls the supply of gas to the high-pressure chamber, characterized in that first and second transformers, first, second and third rectifier diode bridges, first, second and third capacitors, a thyristor, a choke, an opto-triac, a symmetrical thyristor, a control system and a threshold device are additionally introduced, containing first and second transistors, a diode opto-coupler, a zener diode, first and second resistors connected in series, the connection point of which is connected to the base of the first transistor, and their terminals are, respectively, the first and second input of the threshold device, connected, respectively, to the positive terminal of the second and the negative terminals of the second and third capacitors,the positive terminal of which is connected to the third input of the threshold device, connected through the third resistor to the emitter of the first transistor and the cathode of the zener diode, and also through the fourth resistor and through the LED of the diode optocoupler connected to the collector of the first transistor, the collector of the second transistor is connected through the fifth resistor to the cathode of the diode optocoupler, which is the fourth input of the threshold device, and the positive bus of the secondary power source and is the output of the threshold device, connected to the input of the control system, wherein the anode of the photodiode of the diode optocoupler is connected to the base of the second transistor and through the sixth resistor to the ground, connected to the emitter of the second transistor and to the negative bus of the secondary power source, the positive bus of which is connected through the seventh resistor to the anode of the diode of the optosimistor, the cathode of which is connected to the first output of the control system,and the triac in the opto-triac is connected with one terminal through the eighth resistor to the second terminal of the external AC power source and one terminal of the symmetrical thyristor, the control input of which is connected to the second input of the triac in the opto-triac and through the ninth resistor to the second input of the symmetrical thyristor and to the second terminal of the generated AC power source, the first terminal of which is connected to the first terminal of the external AC power source and through the tenth resistor to its second terminal, in addition, the first and second terminals of the generated AC power source are connected through the first transformer to the first, second and third rectifier bridges, at the outputs of which the third, through the eleventh resistor the first and through the twelfth resistor the second capacitor are connected in parallel, respectively, the negative terminal of which is connected to the ground and the cathode of the thyristor,the control input of which is connected to the second output of the control system, and the anode to the first terminal of the primary winding of the second transformer and through the thirteenth resistor to the positive terminal of the first capacitor and to the second terminal of the primary winding of the second transformer, the first terminal of the secondary winding of which is connected through a choke to the positive terminal of the second capacitor and one electrode of the lamp, the second electrode of which is connected to the negative terminal of the second capacitor, while the second terminal of the secondary winding of the second transformer is connected to the external winding of the wire on the lamp.

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