TWI277655B - Fuel gas moisture monitoring apparatus and method of monitoring fuel gas moisture - Google Patents

Abstract

Fuel gas moisture monitoring apparatus (1) that has a simple and robust construction and exhibits stable monitoring capability. The fuel gas moisture monitoring apparatus (1) includes gas extraction piping (14) for sampling of an aliquot of fuel gas having been fed to fuel gas supply facilities; fuel gas thermometer (15) disposed at a region of fuel gas supply piping (5) where the fuel gas is set for the state of steam saturation; squeezing member (16) for reducing of the pressure of gas having been sampled by the gas extraction piping (14) to substantially the same pressure as the steam saturation pressure at the temperature detected by the fuel gas thermometer (15); sample gas cooler (13) for adjusting of the temperature of the sample gas having been brought to substantially the same pressure as the steam saturation pressure to the temperature in the vicinity of the temperature detected by the fuel gas thermometer (15); and drain pot (18) fitted with a drain detector for detecting of any water condensed from the sample gas.

Description

1277655 IX. Description of the invention: [Technical field to which the invention pertains] Law. About the moisture monitoring device for the fuel gas and the moisture monitoring device. There are moisture points: Device::: Monitor the fuel gas supplied to the combustion equipment. [Prior Art] In the iron industry, for example, She J. When the iron is produced by the method, the furnace gas (Blast Furnace > called "BFG") is produced as a raw milk for the birth of the baby. In the near-car 认 认 ^ ^ ^ 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于 基于In addition, it has gradually developed a new ironmaking process (such as TM and (7) brittle method and other direct iron reduction methods) in addition to the method of the order of the ancient order, such as the associated gas produced by the new system. As the „effective system (4) is also increasing, the mixing gas contains water-based gas in addition to impurities such as hydrogen sulfide, hydrogen cyanide, chlorine compounds, sulfurized, ammonia, etc. Because the mixed gas is high in temperature and is cooled by the spray of water, it is saturated when it is supplied as a tender card, and it is saturated. Fuel use situation # ν Bu, the wetness of the 晏 emulsion exceeds the established upper limit for some reasons 偬 macro ^, 疋 upper limit rice cooker value r, will be in the fuel gas supply ^ ... This is the water will adhere to the fuel Gas supply and preparation, burning equipment, heat recovery equipment | and ° looking for the official or machine type, and may be due to the interaction with the above impurities to produce phase. In addition, the moisture in the fuel gas The right increase is 'relatively lower as the calorific value of the fuel, but also 6 12 77655 There is a possibility that the efficiency of the machine or the power generation equipment of the combustion equipment using this fuel gas is reduced. The L-hole wheel and the mixed gas are fuel gas turbine power generation equipment, because the supply of the mixed gas is low. (Atmospheric dust + number i mmAq left must be used for (4) machine to make it firm and shrink. When mixed with dust and dust: 4 sorrows, 'wet points will condense and produce water droplets' and may cause pressure to produce rot or Dust adhesion leads to a reduction in the efficiency of the shrinkage. Thus, keeping the combustion gas in a dry state is a condition to prevent the machine from being rotted and to ensure the reduction of the efficiency of the power generation equipment. However, the fuel gas is naturally generated. The gas 'system' is a gas whose gas characteristics are constantly changing, so it cannot be directly controlled by the source of the gas. = The moisture content in the fuel gas is removed, and there is a hole mechanism, a cooling mechanism, and moisture adsorption. The fuel gas supply and installation of the organization, patent document 1). " No. 2: In order to effectively dehumidify the fuel gas or detect the moisture-related gas, it is preferred to perform moisture monitoring to confirm that the fuel is below saturation, but it has not been carried out in the past. For example, the second part of the fuel gas monitoring in the fuel gas, so there is no monitoring technology. For example, two:::: one-shot, static-capacitance, resistive, etc... is a wet-spot detector in a general rolling body to monitor fuel gas but because these are mainly used to detect moisture in the atmosphere." Gas 2:: Not suitable for the toxicity, flammability, and rot (4): The reliability of the 22nd line is monitored. In order to detect the abnormal situation, the measuring instrument for the fuel gas moisture is required. It is a device that can be stably stabilized for a long period of time; 7 -1277655 is a device having high reliability. Patent Document 1: Japanese Laid-Open Patent Publication No. 2004-92565. SUMMARY OF THE INVENTION This is to solve the above problems. , goods, ^,, μ w volts and moisture monitoring sputum test method, its thirst in the detection of mixed gas

:: The special device can be used according to the simple principle, by using the existing machine or measuring device with performance as its element, and the reliability can be improved and the service life can be increased. The moisture monitoring device should be set up in the fuel gas supply. It is set in the fuel gas supply. It has: gas extraction device, and is supplied to the fuel gas supply (4) (4) - light coffee sample; To the heart:: the device is used to make the gas sampled by the gas extraction device: 2 = the same pressure as the water vapor button and /1 force of the fuel gas supplied to the fuel gas supply device, ^ 5 ^ ^ I will 4 the temperature of the carcass to become the fuel gas for the two main Ht ceremony equipment - # ώ y ii LL 温度 The temperature near the saturation temperature of the helium gas is measured by the condensate produced by the sample gas. = such a composition, the moisture content in the fuel gas supplied by # can be known as the condensed water generated by the increase in the moisture content in the fuel gas. In this way, when the fuel gas supply device has at least a device for raising the fuel gas, such as at least the device, which is used to heat the fuel gas. The gas is pumped from the downstream side of the heating device or the cooling crack to perform fuel heating, or a liquid-heating medium such as water for heating the fuel gas or the cold-disconnector's tank to the flammability 8-1277655. Therefore, when the condensed water is detected from the sample gas on the downstream side of the apparatus, it is estimated that the cause of the increase in the moisture content in the fuel gas is the above-mentioned apparatus. The moisture fraction detecting apparatus 'provides · ^ gas temperature detector, is set In the fuel gas supply device, the fuel gas is set to a fuel gas passage in a state of water vapor saturation; the gas pressure adjusting device is configured to cause the gas pressure of the gas sampling device to be "the gas pressure detector" The temperature at which the water is vaporized and the gas saturation pressure are substantially the same; the gas temperature adjusting device is used to make the temperature of the sample gas at a pressure substantially equal to the saturation pressure of the water vapor as the gas The temperature detector detects the temperature near the temperature; and the condensate detector detects the condensed water from the sample gas. 'Also, the gas pressure adjusting device can set the pressure of the sample gas and body. The water vapor saturation pressure; the gas temperature adjustment device sets the sample gas temperature to a temperature higher than a predetermined temperature of the ® gas temperature detector; the condensate detector detects whether there is a sample gas Condensation • Condensation. ; Thus, by setting the sample gas temperature to a higher than the water vapor saturation temperature _ high, the ratio of moisture in the fuel gas can be varied within the usual problem-free range, or measurement error can occur. At this time, absorb this to maintain a stable monitoring action, and when the actual generation of condensed water is detected, it can be judged that the moisture content in the fuel gas has increased. 9 -1277655 Further, the gas pressure adjusting device can also be configured The dust of the sample gas is set to the spa gas saturation pressure; ^ The gas temperature adjustment device sets the sample gas temperature to be more gassing. The body temperature detector detects a temperature at which the temperature is lower than a predetermined value; the condensate detector detects the amount of water generated from the sample gas. Thus, by setting the sample gas temperature to be lower than the water vapor saturation temperature The established value, even if the fuel gas is saturated with water vapor, produces condensation 2 = but the amount of condensed water detected by the condensate detector can determine whether the moisture in the gas increases. ...y The gas pressure regulator It may also be constituted by a throttle member formed in the sampling passage of the fuel gas. 7 : The gas temperature regulating device and the condensed water H' may be provided with a plurality of pairs of gas temperature adjusting devices, which are to be pressurized by the gas The sample gas which is adjusted to the pressure of 4 cycles is adjusted to a mutually different temperature. By means of this sound, even if, for example, the moisture content in the fuel gas increases, the condensed water can be sequentially (4) due to the addition of the second:: array pair. Therefore, it can be known that the moisture content ratio is τ; and the other wide-knife monitoring device is provided in the fuel gas supply device, and the supply device is provided with the liquid heat medium heated to flow through the fuel supply... The heating device, & cooling for cooling, is characterized in that: the middle to the 'cooling=circulation path, the liquid heat medium is circulated to all the heating devices or 10 1277655 and the heat medium storage container, which is hot The medium is supplied to the heat medium circulation passage; the heat medium detecting device detects the detection result of the heat medium detecting device according to the detection result of the heat medium detecting device, and detects the side of the medium from the heating device or the cooling device Leak into the fuel gas supply path. According to this configuration, the case g #, want, if even in the heating device or cooling shortage = the gas mixed with the liquid heat medium causes the moisture in the fuel gas to increase ^ because of this %, "heat medium storage The container is replenished to the heat medium circulation circuit so that the above-mentioned state of affairs can be detected by detecting the heat medium charge in the heat medium storage container. The method of monitoring the moisture content of the fuel gas of the present invention is to monitor the moisture content of the gas to be supplied to the combustion equipment, characterized in that it comprises: the gas extraction step 'sampling the supplied fuel gas portion; the pressure temperature The adjustment step is to make the sampled supply of the sputum gas from the a knives into a horse and the pressure of the water saturation of the water, and become the fuel gas of the fuel gas. The temperature near the vapor saturation temperature; and the condensate detection step, you are decimating the condensed water produced by the sample gas to the above pressure and temperature; and monitoring the moisture content of the fuel gas based on the condensed water detection result. The pressure temperature adjustment step includes: · the gas temperature detecting step 'detects the temperature set to the steam saturated fuel gas; the gas pressure adjusting step | the flat & the soil q system causes the gas of the gas sample to be sampled in the gas extraction step And the pressure is substantially the same as the temperature of 11 "1277655 water vapor saturation pressure detected in the gas temperature detecting step; and the gas temperature adjusting step is such that the temperature of the gas sampled in the gas extraction step becomes The temperature near the temperature detected in the gas temperature detecting step. Further, in the gas pressure adjusting step, the sample gas pressure is made to be a water vapor saturation pressure; and in the gas temperature adjusting step, the sample gas temperature is set to a temperature higher than a predetermined temperature in the gas temperature detecting step. In the condensed water detecting step, it is detected whether or not there is a sample gas generated thereby to monitor the moisture content. And causing the sample gas pressure to be again, in the gas pressure adjusting step, the water vapor saturation pressure; in the gas temperature adjusting step, 'the sample gas temperature is a temperature lower than a predetermined temperature in the body temperature detecting step; The person measured the gas from the sample;

In the condensed water detecting step, the amount of water is checked; thereby, the moisture score is monitored. According to the present invention, a wet-separation monitoring device having a high sinfulness and a long service life is known by using a simple principle and a flattening between the earth and the earth. And the maintenance frequency and correction frequency are also low. [Embodiment] The fuel gas moisture monitoring device and the wet separation method of the present invention are described in the following description. Fig. 1 is a gas turbine power generation facility 4: 1 eve 12 12277655 which has a fuel gas moisture monitoring wet separation monitoring fuel oxygen supply device, 2, and a gas turbine 3 provided with the present invention. Preparation 4 of the present invention. The applicable object is not particularly limited to the gas turbine power generation source=zhong', for example, a gas generated by a gas such as a blast furnace or a direct reduction iron device, which is used as a gas for the gas turbine 3 to supply the fuel to the fuel. The gas supply device 2 is equipped with a wide range of gas supply and storage, "with g 5 in the middle. On the way to the gas supply pipe 5 of the gas wheel", an electric set is provided from the upstream side thereof: two gas heaters: A low-pressure fuel gas & refrigerating machine (hereinafter referred to as a low-grade 1: a middle) 8, an intermediate cold unit 9, and a high-pressure fuel gas compressor (hereinafter referred to as a high-pressure compressor) 1G. Thus, the fuel gas supply device 2 The fuel gas is compressed by the second stage of the pressure and the high pressure, and the fuel gas is cooled by the intercooling unit 9 during the two-stage compression step. Of course, the object to which the present invention is applied is not limited to the apparatus having the above configuration. Fang; this gas supply pipe 5 is connected to the ancient gate, and to eat t ^ g J逑 and another returning official 1 1, which can make at least the fuel gas between the inlet of the gas turbine and the upstream side of the low pressure compressor 8 Part of the reflow. For example, when the power transmission system generates an abnormality, it must be instantaneous. When the supply amount of the fuel gas is reduced (to reduce), the gas flow turbulence/柃, that is, the T of the dust reduction machine 7, 8 causes a surge, which may cause vibration, so that it can be recirculated. The tube 11 is used to avoid this. The connection position of the downstream end of the return pipe 11 to the gas supply pipe 5 is as long as it is at the low pressure line to the low pressure compressor 8 at the position where the fuel gas supply device 2 supplies the fuel gas. In this case, the return flow f 11' is sequentially provided with a check valve 2 and a gas cooler 13 from the upstream side thereof. Generally, the return pipe 13 • 1277655 is used when the gas turbine 3 is started, Stop valve 12, 佶上, γ ^ 钤 阙 阙 阙 阙 阙 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 上述 这 这 这 这 这 这 这 这^Dream, - A horse is circulated in the tube. Of course, I can exchange heat with other types of heaters, and can also use other types of heaters to chill and cry - part = wetness monitoring device b is from gas supply two: Sampling the fuel gas knives and detecting the contents of the sample gas Who is the gas; Τ π this is the wetness of the τ

Among the tubes 5, the human gas extraction and the f 14' are connected to the gas supply portion "the portion between the portion 9 and the high-level reduction machine (in the figure, the symbol: not shown). As will be described later, the gas extraction pipe 14 Connected to the gas supply piping 5 ', 4, such as the heart of the electric hole Muyuyi 6 and the return pipe U

Between the joints (the pipe is supplied with the symbol D in the figure D. In order to allow the sample port to flow back into the gas material supply device 2, the water gas is saturated with water for the cooling of the fuel gas. To the gas supply pipe 5. Further, the dust is removed by spraying with water in the electric dust collector 6. The electric dust collector 6 removes the liquid component in the fuel gas by a mist separator. Before the fuel gas reaches the gas heater 7, it is conceivable to be substantially saturated with water vapor. Again, in general, after the gas heater 7 is added '4, the fuel gas system remains before the gas turbine 3 is reached. The state in which the water vapor is not saturated (dry state). However, if the water mist separator of the electric dust collector 6 does not sufficiently remove the liquid component of the fuel gas, or the liquid heat medium is cooled from the gas heater 7 or the intermediate When the event of the leakage of the device 9 into the fuel gas is generated, the fuel gas is changed to a state in which the water vapor is saturated or supersaturated by 14 to 1277655. As a result, it is possible to adhere the condensed water to the low temperature portion of the fuel gas supply device 2. , The sub-monitoring device 1 is provided in a portion where the fuel gas may be saturated with water vapor for some reason. That is, in the present embodiment, the gas is disposed between the electric dust collector 6 and the gas turbine 3 Supply piping 5. ",, " see π take 1 i, the burning of the grave

The gas sample is depressurized and desuperheated. That is, (4) condensed water (hereinafter also referred to as drainage (d·), by making the pressure of the sample gas yak as low as the pressure of the water vapor saturated state of the upstream side of the fuel gas sampling position. )). In this way, the moisture content of the fuel gas is monitored. The fuel gas pressure and temperature in the above-mentioned water vapor saturation state can be referred to as "reference pressure" and "US standard temperature". This reference temperature is the fuel gas temperature at the portion of the gas supply pipe 5 at the temperature of the gas supply pipe 5. Since the fuel hole in this portion is maintained in a water vapor saturation state under the positive stagnation, the reference pressure is the water vapor saturation pressure of the reference temperature. The gas extraction pipe 1 41 μ ^ γ t + ^ 攸 is provided with a throttle member 16 in the upstream side thereof as a gas pressure for reducing the pressure of the rolling body pressure The adjusting device, the sample mouth gas cooler 丨7, ^ ^ _ , and 乍 are the gas enthalpy of the gas used for the sputum sample; and the drainage water is crying for 1 s. σσ is used to collect drainage. This row [:8, which can play the role of detecting the sample gas helium) is a function of the thirsty. The drainage container is provided with a drainage detector (not shown) for detecting whether or not there is a discharge row. Drainage detector: Water detectors, for example, use Α 且 且 且 适用 由 由 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气 电气And so on. 15 *1277655 The downstream side of the body extraction and dispensing unit 14 is connected to the downstream side of the position gas extraction pipe 14 between the electric dust collector of the gas chamber 5 and the connection portion between the gas and the reflow fii. The connection portion d is a fuel gas of the first-class gas supply pipe 5, which is usually maintained at a position where the water vapor is saturated. X ′ is connected to the upstream side of the connection portion of (10) f η in order not to be affected by the high-pressure fuel gas that flows back through the return pipe i]. According to this, the "rolling body pressure in the gas extraction pipe 14 on the downstream side of the throttle member 16" and the fuel gas pressure flowing through the portion D of the gas supply pipe 5 connected to the downstream side of the gas extraction company 14 (the above-mentioned reference pressure) Μ ° and 'the temperature of the sample gas' is the temperature of the fuel gas from the sample gas cooler 17 to the portion D of the gas supply pipe 5 connected to the downstream side of the gas extraction port I (the above reference) The temperature, shown by the symbol Ts in Fig. 2) is a slightly higher temperature (target temperature). 2 shows that the fuel gas supplied from the gas generation source s passes through the dust collector 6, the gas heater 7, the low pressure pressure, and the cold junction state 9, passes from the sampling point C through the gas extraction pipe 14, and then passes through the sample gas. An example of temperature change is obtained by cooling the crying 17 ^ non-aqueous container 18 and reaching the connection point D with the gas supply pipe 5. The vertical axis of Fig. 2 indicates the temperature of the ritual limb, and the bridge is the above-mentioned gas passage. Machine class, etc. 八' As shown in Figure 1, the sample gas cooler 1 ^ WW V is placed on the private side of the sample gas month and / dish juice 19. Also, in the sample gas cooler tube? 1 Μ古Η丨v , Μ 1 7 cold water supply: 夕: There is ... Lang cooling water flow rate adjustment between η. Gas cooling state I 7 as a temperature adjustment device for the sample gas 7, the reason is 様σ ... is the target temperature. The reason is that the square-like rolling stock is at a reference temperature Ts 16 ^ 77655 degrees Ta. The fuel gas thermometer 15, the throttle member μ, the body cooler 17, the drain container 18, and the sample gas thermometer may be referred to as wet moisture detecting means for detecting the moisture content of the fuel gas. kind. The product = body cooler 17' is controlled by the control device 2 to make the ::milk temperature the target temperature. That is, the control device 20 detects that the reference temperature Ts is a little higher (Ts + Δ) as the target temperature, and the second/elimination of the flow rate adjustment valve η of the cooling water supply pipe 21 is detected by the sample gas thermometer 19 The sample gas is not: the deviation of the vessel Ta from the target temperature Ts+ Δt. In order to detect that the fuel gas knife s is more than the spa gas saturation point, and the sample is the reference temperature and the reference force, based on For the reason, the target temperature of the sample gas to be used for detecting the drainage is higher than the reference temperature (saturation temperature & a little higher. That is, because the characteristics of the fuel gas may change slightly, or the state of the material f will be affected by it. The error is caused by the change of the environmental conditions of the installation place, so it is used to absorb the error. The difference between the target temperature and the reference temperature At' can be determined as the corresponding base gas meter (as shown in Figure 3). The predetermined water vapor is repeatedly (in other words, the volume ratio of moisture in the fuel gas), so it can be changed according to the temperature of the fuel gas. That is, Δt is in the low-voltage line which is set to be saturated with water vapor. The temperature of the feed gas changes. As shown in Fig. 3, the change ratio of the water vapor (four) of the fuel gas (the change of the partial pressure of water vapor to the change of the temperature of the fuel gas) is larger as the temperature of the fuel gas is higher. It will be set to correspond to the predetermined water-based gas partial pressure, so the temperature of the supplied fuel gas is higher than the temperature difference when the supplied fuel gas temperature is lower. For example, as shown in Figure 3, 17 -1277655 The temperature difference of the volume ratio of water when the fuel gas temperature is around 20 to 30 ° C is about 2% (indicated by the symbol Μ in Fig. 3) is about i〇 °c (in Figure 3, the symbol N) It is shown that 'but the temperature difference of the water volume when the fuel gas temperature is around 60 ° C is about 2% (the symbol of Figure 3 is indicated by the symbol X) is about 2t (Fig. 3 is less). In Fig. 3, The vertical axis is the partial pressure of water vapor, and the horizontal axis is the temperature of the fuel gas (water vapor temperature) to indicate the saturated water vapor line. Thus, even if the fuel gas supplied in the state of water vapor saturation is added by gas: °, etc. Superheated vapor state, by returning this fuel gas to its original pressure close to the spa gas saturation The temperature is used to detect the presence or absence of drainage, and it is possible to detect whether the moisture content in the fuel gas is abnormally increased. For example, in the embodiment shown in Fig. 1, the electric dust collector 6, the gas heater 7, and the intercooling portion can be detected. The moisture in the device 9 and the increase in the moisture content caused by the addition of the knife. For this purpose, the hole month ": should be equipped with the sampling position of the fuel gas in g 5 (that is, the gas extraction pipe connection position C) As long as it is downstream of the intercooler 9 and upstream of the gas turbine 3, ^ P. In addition, in the sample gas cooler of the gas extraction pipe 14 in the ancient day, there is /", the knife When it is introduced into the fuel gas, it can also be detected by providing a drain container 186 downstream thereof. Fig. 4 shows another 揪 揪 乂 乂 milk supply device 23. In this device 23, the gas supply pipe 5 is only the clock L ^ σ and the fuel compressor 50. Also, an intercooler 9 is not provided. Further, in the same manner as in the middle of the η σ and the intermediate cold portion, the gas heating 荔 7 is not a component of the present invention. In the fuel gas supply device 23, the moisture monitoring device is placed on the downstream side of the fuel gas compressor 50. Since the configuration of the wetness monitoring device is the same as that of the wetness monitoring device 1 of Fig. 1, it is described in detail. By monitoring the agricultural product, for example, in the wet dust collector 6 and the gas force... = into the fuel gas, for example, when the full-scale increase is caused, the fuel gas sampling of the gas supply pipe 5 can be taken for this purpose. The position (also the connection position of the tube 14) may be any position downstream of the gas heater 3 at the downstream of the gas heater 7. As described above, the installation position of the wetness monitoring device i and the connection position C between the supply pipe 5 and the gas extraction pipe 14 may be facilitated by mixing the moisture in the heart gas. That is, as shown in the figure, the knife is different from the figure! The gas turbine power generation equipment" is set on the downstream side of the Luguang low-pressure compressor 8 and the intercooler 9. The measurement t is set to 24, 1. Thus, by means of special /, orphan, it can be roughly in any machine 6, 7, 8: It is detected that the wetness is already wet. Therefore, it can be taken as a quick and timely treatment. Fig. 5 is a detailed description of the same piping and the same machine as that of Fig. i. The dust collector's between the reducer and the intercooler 9 and the intercooler = : the side is connected to the gas extraction pipe 14. In the low (four) reducer 8 and the middle 'two ° P: 9 and intermediate cooling The wetness monitoring device 1 on the downstream side of the device 9 has the same configuration on the real v, and the gas extraction pipes of the two wetness monitoring devices i1 are connected to each other, and the τ swimming end is connected to the gas supply and the neutralization. Electricity

Gas dust collector 6 and back;; Fen Ying! ! +h A port captures the position D between the <11 connection. The two wet traps are set to 1, the sample gas is the reference pressure by the throttle member 16, and the sample gas cooler 17 is controlled to have a temperature slightly higher than the reference temperature Ts due to the different sampling positions. The 16 series sets 19 1277655 into different flow path impedance values. Further, the reason why the monitoring body extraction pipe 14 is connected between the low pressure compressor 8 and the intercooler 9 is that the flow path resistance from the electric dust collector 6 to the low pressure compressor 8 is small, so that the gas heater is close to The difference between the fuel gas pressure at the downstream position of 7 and the fuel pressure and force at the downstream end of the gas extraction pipe 丨4 is too small, and the sample gas cannot be sufficiently circulated. For this reason, the downstream side of the low pressure compressor 8 having a higher pressure is taken as the sampling position. On the other hand, the moisture monitoring device 24 disposed upstream of the electric dust collector 6 is different from the moisture monitoring device i described above, and is not provided with a throttle member and a sample gas cooler in the gas extraction pipe 14. To ensure the quantitative I 51 of the sampling flow and the drain container 18. Then, the gas extraction pipe 14 is connected to the gas extraction pipe 14 of the two wetness monitoring devices, and is combined. The reason why the throttle member and the sample gas cooler are not provided is that the sample gas is taken out between the electric dust collector 6 and the gas heater 7, that is, the fuel gas flow in the state of water vapor saturation. Therefore, the sample gas is not _, and salt I does not need to be cooled. It is only necessary to directly sample the fuel gas in the state of water vapor saturation to detect the presence or absence of drainage. Of course, in order to make the sample gas plate μ degree slightly higher than the reference temperature Ts (Ts + Δt), a heater may be provided on the upstream side of the drain container of the gas extraction dispenser 14. In the embodiment described above, the gas dust collector 6 using the water spray to the fuel gas, the gas heater 7 using the liquid heat medium, and the intermediate cooling are regarded as the main moisture supply sources. The wet side "^ = 24, 1 is provided on the downstream side of the same, but is not limited to this configuration. It is not limited to the gas turbine I, and the combustion equipment is provided, even in other combustion equipment, the above-mentioned machine 20 1277655 6, 7 , Q ^ , # , Μ 之 之 之 混 混 混 混 混 混 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性 可能性Device 1. In addition, it can also be used in the long-term fishing monitoring equipment, such as Hu Wei,, s J, and each. It is also used to notify the wet spots to produce abnormal displays or sounds. It can be inferred whether or not the machine has been in the machine---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- τ Figure 6 ' shows the sample gas in the phase with the gas supply camp The sample gas is cooled by a plurality of measuring devices 1 having different set temperatures. The fuel gas supply device 2 of gj 6 is the same as the device 2 shown in Fig. 1, and therefore the same piping and the same machine as those of Fig. 1 are given. The same reference numerals are omitted, and the detailed description is omitted. In Fig. 6, the multiple arrays (three sets in the present embodiment) of the wetness monitoring devices are arranged in parallel, but may be arranged in series. However, never Ik 攸 It is not necessary to adjust the pressure loss of the sample gas to be the same. 'The parallel configuration is preferred. The sample gas sampling position of the gas supply pipe 5 (between the intercooler 9 and the high pressure compressor 1〇) is connected. a gas extraction pipe 14 which is divided into three gas extraction pipes 14a, 14b, and I4e. A throttle member i6 is provided in a portion of the above-mentioned gas extraction pipe 14. The three gas extraction pipes are branched. I4a 14h 171 8%, 14b, 14c are respectively provided with sample gas coolers na, m, i7c, sample gas thermometers 19a, i9b, ... and drain containers 18a, 18b, 18c. Further, gas extraction pipes 14 & ^乜Reunion again a gas extraction device f14, and a downstream end of which is connected to the gas supply pipe 5, and a position 21 1277655 between the connection portion of the electric dust collector 6 and the return pipe η is set. Sample gas coolers 17a, 17b, 17c, for example The set temperature of the first sample gas cooler 27a is a temperature slightly higher than the reference temperature TS (Ts + Δ ti)' The set temperature of the second sample gas cooler 17b is set to be higher than the set temperature of the first sample gas cooler A slightly higher temperature (Ts+, third loose mouth $ 郃 benefits! 7c set temperature is slightly higher than the set temperature of the second sample gas cooler (Ts + Δη + . The temperature difference between these is very small. In this manner, the fuel gas flows into the branch pipes 14a to 14b, (4) at the same pressure, and flows into the respective drain containers 8a, 18b, and 18c with a slight temperature difference. , respectively, slightly higher than the reference temperature of the set temperature of the sample gas cooler = Λ η 'At2, At3' can be determined in the same manner as described above to correspond to the vapor pressure partial pressure shown in the vapor 3) (in other words, fuel) The twist ratio of the water knife in the gas). Accordingly, ?tl, Δΐ2 is changed depending on the temperature of the supplied fuel gas, that is, the temperature in the above-mentioned low-pressure line set to the vapor saturation state. And the second:: the wet-spot monitoring device is configured to detect the moisture in the fuel gas that is increased for some reason to be complicated... The following two situations are used, that is, only the young drainer 18a The first type of drainage water is used to detect the second type of drainage container i 8a〗 This is the second case of the detection of the child, and the second case of the detection; the drainage container 18a 18b 1 the heart and the other 5, 8 to speculate The third case. It can be pre-piped by the steam meter shown in Fig. 1 _ Fig. 3 is wide and wide, and the temperature difference exceeding the wet component is allowed to be Δ tl + t2 + △ corresponding to the third case (for example, when an alarm must be issued) T3. Then, set the pair to the master in order: For example, the Δ center of the t-shaped (the case of the younger brother m, the alarm) must be issued, and the setting of 22 1277655 corresponds to the first case (for example, the first must be issued) At the first stage, pay attention to the situation of the alarm) Δ tl. By this, the increase in moisture content can be predicted. As a wetness monitoring device, instead of the figure, the drain detector provided in the drain container 18 in the wet eight monitoring device 1 of FIGS. 4 and 5 (that is, a drain detector that detects only the presence or absence of drainage) is used for measurement. A drainage gauge for the amount of drainage produced per unit time (hereinafter also referred to as flow rate). Although not shown, the overall composition of the moisture monitoring device is the wetness of the figure, FIG. 4 and FIG.

The monitoring device 1 is identical. The difference is that it is provided in the drain container 18" as described above, and the I detector is a measuring device that measures the amount of drainage generated per unit time, and sets the set temperature of the sample gas cooler 17 to be lower than the reference temperature. Low temperature (Ts - 5 t). Again, the temperature of the sample gas cooler 17 is set to have a certain flow from the sample gas bone even if it is not assumed to have a healthy state of increase in wetness. The difference between the set temperature and the reference temperature t t' is determined in the same manner as the above-described enthalpy, and the partial pressure of the water enthalpy of the corresponding vapor table (see Fig. 3) is determined. According to the supply of the material H, that is, the root (4) is determined to be the water vapor saturation state of the above-mentioned low-pressure pipeline; | The fuel gas temperature is changed. According to the moisture monitoring device, as long as the fuel gas is wet for some reason If the amount is increased, the amount of drainage generated will increase. Then, the control device 20' will calculate the mass of the drainage produced from the sample gas, and the ratio of the mass flow of the sample gas, to determine the wetness of the fuel gas: Private. That is The ratio of the ratio of the mass flow rate of the pre-drainage to the mass of the sample gas of the saturated vapor state is 23,1,277,655, and the ratio of the ratio to the mass flow rate of the measured body is compared with the predetermined value. When the value is large, the discharge of the alarm is issued, and the six θ 丄 丄 / 爪 爪 爪 爪 爪 、 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 )/(Ws/Gs)> 1+ α where 'Ga is the mass flow rate of the measured sample gas, and ^ is the measured mass flow rate of the drainage produced by the sample' Ws is the calculation:

And the mass flow rate of the sample gas is the calculated mass flow rate from the sample gas production = drainage, and α is the estimated margin (bribe (four). The above I and Gs are set by the gas supply piping 5 to be saturated with water vapor. The temperature and pressure on the downstream side of the electric energy device 6 are steamed according to the steaming method shown in Fig. 3. As an example of the measuring method of the flow rate, so-called water level control can be employed. For example, the bottom of the drain container 18 is continuously controlled by the control device 20. The opening degree of the discharge valve 25 maintains the water level of the drain container 18 constant, and the drain flow rate is calculated from the opening degree of the drain valve 25. Alternatively, the discharge valve 25 at the bottom of the drain capacity = 18 is intermittently opened to make the drain container The water level of 18 is maintained at _, and the drainage flow rate is calculated from the valve opening cycle. # Any other suitable measurement method can be used. On the other hand, the flow rate of the sample gas can be set in the orifice of the gas extraction pipe. The pressure difference between the front and rear of the throttle member 16 is calculated. This stipulation can use the pressure gauges 26, 27 of the existing fuel gas supply device provided in the gas turbine power generating device 4. This pressure gauge is shown in Fig. i, usually The dust gauge 26 placed on the inlet side of the low pressure compressor 8 and the pressure gauge 27 disposed on the inlet side of the high pressure pressure 24 1277655 reducer 10. The two pressure gauges 26, 27 are separated from the cleaning member 16, but due to a pressure from The pressure loss between the inlet 27 of the throttle member 丨6 and the pressure loss between the outlet of the throttle member 16 and the other pressure gauge 26 is comparable to the differential pressure immediately before and after the throttle member 16. It is small, so the measurement of these pressure gauges is regarded as the pressure immediately after the throttling member, so that the gas flow is unobstructed. Thus, the existing machine can be used to monitor the moisture in the fuel gas. Of course, a pressure gauge for calculating the gas flow rate may be separately disposed at a position immediately before and after the throttle member 16, or a liquid pressure gauge (raanoraeter) may be used. Further, the drainage flow rate may be measured, that is, the flow rate value based on the measurement result may be calculated. The water vapor partial pressure in the fuel gas at that time. As a result, it is also possible to judge the water vapor in the fuel gas at the time in the gas supply pipe 5 which is initially set to the saturation state according to the steam meter shown in FIG. Is it actually And steam, or to what extent, wet steam. Figure 7 is the same equipment as the gas turbine power plant* shown in Figure}, 6 this gas turbine power plant 4 is equipped with the moisture monitoring device 1 of Figure i The same wetness is the k-measuring device 3 i. This wet-spot monitoring device i η is a cold-sinking device that is specially designed for the wetness of the crotch and the heating device mixed into the fuel gas. The heating device is a device that uses a liquid heat medium, so that the above-mentioned thirst is divided into six, the eyes are strong, and the iron is placed, and the 3 1 can be said to be a device for detecting that the heat medium leaks into the fuel gas. The gas heater 7, the intercooler 9 and the gas cooler 13 of the helium supply device 2 are shown, and are supplied to the liquid heat medium according to the % table, that is, As shown, the heat 25 罾 1277655 ® ® tube 32 of all devices 7, 93 is constructed as a closed circuit. The piping for cooling medium (hereinafter referred to as "heat medium circulation piping" 32 is connected (four) to the heat medium tank 33 to which the heat medium is added. The heat medium tank 33 is connected to a heat medium for the heat medium tank, and the heat medium supply pipe 34 is provided with a flow stop adjustment valve 35. The liquid level 彳% is installed in the heat medium tank 33. The control (4) is set to 20, and the stop valve 35 of the heat medium supply pipe W is switched according to the measurement result of the liquid level meter 36 to control the liquid level position in the heat medium tank 33 to control the amount of the heat medium to be maintained. Accordingly, other known measuring devices that can detect the amount of heat medium in the heat medium tank 33 are not limited to the liquid level meter. Water can be used as the heat medium. The symbol 37 indicates a hot county for the circulation pipe 32. The symbol 38 is a heat medium cooler for cooling the heat medium of the circumstance. In the present embodiment, the heat medium is supplied to the intercooler 9 and the gas cooler 13 in addition to the cooler for the heat medium. Thereafter, it is circulated while being supplied to the gas cooling heat pump 37, but is supplied to the intermediate cooling: the heat medium of the main ♦ 丄丨卯 9 is heated in the sputum fuel gas and sent to the gas The fuel gas on the heater side is heated. In this way, the swims are not lost due to leakage, etc., and the loops are circulated in the above coolers and heaters. In this case, the liquid level of the medium tank 33 does not change. When the cooling = the heat exchanger 7, the intermediate cooling 11 9 , and the gas sample 33 ... leaked into the fuel gas, the heat medium tank is replenished from the inside to the heat medium to the heat medium circulation pipe 32. The liquid level in A will temporarily decrease. After receiving the liquid level reduction signal 26 1277655 from the liquid level meter 36, the control of the dream medium circulation pipe L βρ will open the stop flow 35 to replenish the heat medium to the heat to send the invitation. The control device 2〇 is also based on the liquid level lowering signal and p oe AL becomes /#,,, and the knife is set to 3, and the thirst is divided into the fuel 翕φ沾7 from one·,,, Knife /, $ can be this. Or, you can also use the η knee wealth, the old charge to the heat medium cycle IT according to the temperature of each single valve of the stop valve 35 used to heat the media Time to send out the 彳... When the mother's early position _ is replaced by the stop valve... 'Although the flow adjustment valve is used to value the big day..., the change of the valve opening degree can be measured, and when the opening degree is larger than the predetermined value, it is issued. Fig. 8 shows another, crystal measurement 1 set. Fig. 8 shows that the system is connected with the Μ Μ 发电 发电 发电 发电 又 又 又 又The moisture monitoring device is configured to be used in a measuring device that is conventionally placed in an existing power generating device 4, and the efficiency of the power generation terminal calculated from the measurement result is 曰3. The change is used to judge the change of moisture in the fuel gas. Figure 8 shows the oxygen recording in ^, ,, and ritual branches in more detail. This gas turbine power generation is set at 4 〒, although the gas turbine 3, high pressure _ & · soil & The % machine 1 〇, the low-pressure compressor 8 and the generator 42 are connected coaxially, and the # a J glaze is not limited thereto. The compressors 8 and 10 may be disposed away from the gas turbine 3, and may be driven by another. The source is driven. The figure shows the air compressor 43 and the burner 44 of the gas wheel ^ l wish money 3. The above-mentioned wetness monitoring device is usually used for the damage of the brake field. 4, the fuel oxygen on the gas supply pipe 5 (5) 虱 / the meter 15 , the calorie meter for measuring the calorific value of the fuel gas (heat of combustion) , m , θ ... 45, used to measure the fuel gas flow The flow meter 46, and the generator 49 + * native, % % 42 The power generation output meter 47. The above-mentioned calorimeter 45 measures the heat of the squeezing knife that has removed the moisture (the dry state) fuel 27! 277655 milk heat. Another aspect, the 泠 揪. , Lian Li L δ 10 46 series measurement of the machine containing the moisture. The igniting rolling thermometer 15 is located near the exit of the § 呌Μ 包 包 轧 木 § § § , , , , , , , 4 4 4 可 可 可 可 可 可 可 可 可It is disposed at any position near the inlet of the burner 44. The flow meter 46 should be in the piping 5 and the downstream side of the machine where the moisture is mixed into the gas. By using a measuring instrument such as the existing fuel gas temperature 46, the heat of the HI-wheeled gas turbine is calculated, and the output of the gas turbine 3 is calculated at ===. The input heat and gas rotation rate of the gas-fired net branch. ^The ratio of the fly I branch is called the above-mentioned power generation end effect. The two-party 'thermal meter 45' measures the fuel gas in the dry state. As long as the characteristics of the fuel gas itself do not change, even if it is 3 years old. Change, the measured calorific value is also determined. In addition, the purely Ii finder system of the gas turbine 3 maintains a certain output during normal operation. The result is that, for some reason, the fuel is supplied to each unit of the fuel gas, and the % of the fuel is reduced, which reduces the amount of heat generated by the early body, thereby increasing the control of the flow of the fuel gas to the gas turbine. 1社丁 The appearance of fuel gas to the gas turbine 八,,,. Since the power supply is maintained at a certain level, it is increased, and on the other hand, the power generation efficiency is lowered. : The moisture is monitored to detect the decrease in the efficiency of the power generation terminal, and the possibility that the moisture component has been mixed with the fuel gas can be ascertained. When this reduction is caused by an abnormality of the equipment, it is possible to stabilize the operation by performing the final re-processing of the second " In addition, in the early 4 minutes, the mixed gas of the special fuel itself is in the field, and it is used as a reason to correct the abnormality. :, Period: Re-examine the gas generation system. Early detection of damage caused by the mixing gas abnormality 28 -1277655, and appropriate treatment to ensure the continued operation of safe operation. ^ The moisture monitoring device i' described above is installed in the gas turbine. In addition, the example is $', but the setting object is not limited to the gas turbine power generation equipment. Incineration steel furnace power generation equipment for burning fossil fuels, power plant for burning incinerators for combustion gas refining furnaces, power generation equipment for internal combustion engines, etc., as long as the gas is used as a fuel gas supply device for burning combustion of fuel, (4) . : By using the above-mentioned wetness monitoring device or by performing the above two:: method ', it is possible to detect the occurrence of equipment in the operation of the equipment... as long as a plurality of moisture monitoring devices are set at appropriate places (Example: photo ::)' Then it is not necessary to find out the abnormalities in the equipment: The necessary h 4 ° Therefore 'can prepare for the abnormal position maintenance, re-examine the operation time 箄, 叮 ” Japanese private. Yako rice is assigned to the staff according to the schedule of the project. ^ The most suitable time to stop the operation of the equipment, the short-term shell structure can be used in the method. The equipment management of the n-order maintenance and maintenance of the fuel gas moisture monitoring of the present invention The two devices are equipped with the same principle: the fuel gas can be used, so the monitoring performance of the soil can be stabilized and the structure is simple and long-term, and the composition is simple, and the structure is simple. The invention relates to a fuel gas moisture monitoring core according to an embodiment of the present invention, which has a fuel gas supply device 29 and 1277655. FIG. 2 shows a temperature of a fuel gas and a sample sampled from the fuel gas. Fig. 3 is a water vapor saturation curve of a change in water vapor partial pressure in a fuel gas to a temperature of the fuel gas. Fig. 4 is a piping diagram illustrating a gas turbine power generating apparatus having a wet body provided with an embodiment of the present invention. Another fuel gas supply device of the monitoring device is shown in Fig. 5. Fig. 5 is a piping diagram of a gas turbine power generation apparatus having a fuel gas supply device provided with a wetness monitoring device according to another embodiment of the present invention. Fig. 6 is a diagram showing gas turbine power generation. A piping diagram of a device having a fuel gas supply device provided with a moisture component monitoring device according to another embodiment of the present invention. Fig. 7 is a piping diagram showing a gas turbine power generation device having a moisture component provided with another embodiment of the present invention. Fig. 8 is a piping diagram illustrating a gas turbine power generation apparatus having a fuel gas supply apparatus provided with a moisture separation monitoring apparatus according to another embodiment of the present invention. [Main Symbol Description] ® 1 ,24,31 wet separation monitoring device 2,23 fuel gas supply equipment _ 3 gas turbine 4 gas turbine power generation equipment. 5 gas supply Piping 6. Electrical dust collector 7 Gas heater 8 Low pressure compressor 30 • 1277655

9 Intercooler 10 High pressure compressor 11 Return pipe 12, 35 Stop valve 13 Gas cooler 14 Gas extraction pipe 15 Fuel gas thermometer 16 Throttle member 17 Sample gas cooler 18 Drainage vessel 19 Sample gas thermometer 20 Control device 21 Cooling Water supply piping 22 Flow regulating valve 25 Discharge valve 26, 27 Pressure gauge 32 Heat medium circulation piping 33 Heat medium tank 34 Heat medium supply piping 36 Level meter 37 Heat medium pump 38 Heat medium cooler 42 Generator 43 Air compressor 31 ^ 1277655 44 Burner 45 Calorimeter 46 Flowmeter 47 Power Generation Output Meter 50 Fuel Compressor 51 Quantitative Pump

32

Claims (1)

-1277655 X. Patent application scope · · · A fuel gas thirst g>u — ”, measuring device, is installed in the fuel gas supply port and is characterized in that it has: a gas extraction device, Sampling a portion supplied to the fuel gas supply; and ... the wetness detecting device is configured to cause the pressure of the gas sampled by the gas extracting device to be substantially the same as the burning saturation pressure supplied to the fuel gas supplying device , * You pick up the product... The temperature of the sample gas of the milk is made to the temperature near the saturation temperature of the water 瘵 ..., the material of the fuel gas supply device, thereby detecting the condensed water produced by the sample gas. 2. The method of claim 1, wherein the fuel gas supply device comprises at least one device for heating a fuel gas by means of a liquid heat medium or a cooling device for cooling; The gas extraction device performs fuel gas sampling from the downstream side of the heating device or the cooling device. 3. The fuel gas moisture as claimed in the patent scope 帛1 The monitoring device, which is equipped with the 'humidity detecting device, has: a gas temperature detector, which is set in the fuel gas supply device, the fuel gas is set to a fuel gas passage in a state of water vapor saturation; - ^ body pressure regulating device,气 The gas sampled by the gas extraction device has a pressure that is substantially the same as the water vapor saturation pressure of the gas temperature detector; the gas temperature adjustment device is configured to be substantially the same as the water vapor saturation pressure. The temperature of the sample gas of the pressure becomes the temperature near the detection temperature of 33 1277655 of the gas temperature detector; and the condensate detector detects the condensed water from the sample gas. 4. The fuel gas of the patent application 帛3 item The moisture monitoring device is disposed, wherein the gas pressure adjusting device is configured to make the sample gas pressure vapor saturation pressure; 4 7jC The gas temperature adjusting device is such that the sample gas temperature becomes higher than the detection temperature of the body temperature detector. The value of the temperature; milk condensate detector, can detect whether there is water from the sample gas. / Slope 5. The fuel gas moisture monitoring device according to item 3 of the patent application scope, wherein the gas pressure regulating cracking is performed to make the sample gas: vapor saturation pressure; the knife & Moreover, the clothes are placed so that the sample gas temperature becomes a temperature lower than the detection temperature of the carcass temperature detector; "〃 production=water she can detect the sample: the condensed water produced by the gas” 6: : Shen 2 ^ circumference ... fuel gas wet _ ^ 冉 T $ 虱 body pressure adjustment dream that the clothing is a decompression member formed by the throttle member formed in the fuel gas failure road. 7 7·If the fuel gas of the fourth paragraph of the patent application scope is provided, the complex composition is inclined + 4 〆... The knives are made into a garment, the number is, and the pair of gas temperature detectors, each gas 俨 - Sore% ~ 丨 罝 减 减 减 减 减 ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” 8· A fuel gas thirst is divided into..., ready-made 1 garment, set in the fuel gas supply set 34 1277655, the scale is thick* ..., the bamboo raft supply equipment has the m-knife heat added by the liquid heat medium The utility model is characterized in that: the heating device for supplying at least one of the fuel, the heating device for the oxygen, and the cooling device for cooling are characterized in that: the cooling: the circulation passage is configured to circulate the liquid heat medium to all the heating devices or. ..... 召谷, is to supply the heat medium to the heat medium circulation path; to detect the amount of heat medium in the heat medium storage container by ',,,, media testing device The detection result of the medium detecting device, whether the heating medium in the primary side is heated or the cooling device leaks to the fuel In the gas supply path, the moisture distribution monitoring method for the fuel gas is used to monitor the moisture content of the gas supplied as fuel to the gas, and includes: a gas extraction step, which is supplied Part of the fuel gas is sampled; d. The pressure temperature adjustment step is such that the pressure of the sampled gas becomes substantially the same pressure as the water vapor saturation pressure of the supplied fuel gas, and becomes the vicinity of the water vapor saturation temperature of the supplied fuel gas. And the condensed water detecting step detects the condensed water generated by the pressure and the warm gas; and monitors the moisture content of the fuel gas according to the condensed water detecting result. 10. If the fuel gas of the patent scope g 9 is applied a moisture monitoring method, wherein the 'moisture temperature adjustment step comprises: a gas temperature detecting step of detecting a temperature of a fuel gas set to a water vapor saturation state; and a gas pressure adjusting step of sampling the gas in the gas extraction step 35 1277655 [The force of water vapor saturation pressure for the temperature detected by the gas temperature detection step towel is The same pressure is applied; and the temperature adjustment step of the body is such that the temperature of the gas sampled in the gas extraction step is the temperature near the temperature detected in the gas temperature detecting step. The method for monitoring a moisture content of a fuel gas according to the item ,, wherein, in the gas pressure adjusting step, the sample gas pressure is a water vapor saturation pressure; • in the gas temperature adjusting step, the sample gas temperature is made to be higher than the gas The temperature in the temperature detecting step is a temperature at which the detected temperature is higher than a predetermined value; in the condensed water detecting step, it is detected whether or not condensed water is generated from the sample gas, thereby monitoring the moisture content. 1 2 If the patent application scope is the first item The moisture of the fuel gas is divided into:, v, and then the method, wherein in the gas pressure adjusting step, the sample gas is carried; the water vapor saturation pressure; in the gas temperature adjusting step, the sample gas temperature is made # 温度 The temperature at which the detected temperature in the gas temperature detecting step is lower than the predetermined value; in the condensed water detecting step, the human detects the Product gas > relic coagulation " water, whereby the moisture is monitored. XI. Schema: as the next page 36