CN111226104A - Gas sampling probe and flue gas analyzer with same - Google Patents
Gas sampling probe and flue gas analyzer with same Download PDFInfo
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- CN111226104A CN111226104A CN201880066823.0A CN201880066823A CN111226104A CN 111226104 A CN111226104 A CN 111226104A CN 201880066823 A CN201880066823 A CN 201880066823A CN 111226104 A CN111226104 A CN 111226104A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
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Abstract
The present invention provides a probe (10) having: a housing (21) provided with an opening (24A) for introducing a sampling gas; a filter (30) which is housed in the housing (21) and which removes dust contained in the sample gas introduced into the housing (21); a heater unit (40) for heating the filter (30). The heater unit (40) is provided with: a 1 st heater (41) which is a heater for always supplying electricity; a 2 nd heater (42) for adjusting heating capacity; and a temperature controller (50) for controlling the on/off of the No. 2 heater (42) according to the temperature of the filter (30). The heater unit (40) is configured to be capable of maintaining the temperature of the sample gas passing through the filter (30) at a temperature at which condensation of the sample gas is suppressed by on-off control of the No. 2 heater (42) by the temperature controller (50).
Description
Technical Field
The present invention relates to a gas sampling probe for sampling and analyzing flue gas discharged from a thermal power generation system, an incinerator, a boiler, or the like, and a flue gas analyzer including the gas sampling probe.
Background
A conventional gas sampling probe generally uses a cylindrical case as a main body, which is easily attached to a chimney or the like, and a cylindrical filter is coaxially provided inside the case. Further, a hole for introducing the sample gas is provided on the chimney side of the housing, a seal member is attached to an opening portion on the other end side of the housing, and a pipe for discharging the dust-removed sample gas is connected to an outlet hole provided in the seal member. The sample gas led out through the pipe is supplied to a gas analyzer or the like. Patent document 1 discloses an example of a conventional gas sampling probe.
However, in the case of such a gas sampling probe, the temperature of the sample gas passing through the filter is maintained at or above the acid dew point (about 150 ℃) of the flue gas in order to suppress clogging of the filter due to liquid discharge. For this purpose, a heater is provided to heat the filter from the outer surface of the housing via the sampling gas inside. Further, if the sampling gas is excessively heated by the heater, the temperature may exceed the use limit temperature (specifically, 180 ℃) of a member constituting the gas sampling probe, for example, a sealing member. Therefore, the heater is controlled on and off to keep the sampling gas in the range of 150 ℃ to 180 ℃.
The conventional gas sampling probe controls the heater to be turned on and off by using a temperature controller for detecting the temperature of the outer surface of the shell. The temperature controller is a type of circuit which directly reaches the heater, so that the heater can be switched on and off by the gas sampling probe without providing a control box.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 10-48107
Disclosure of Invention
Technical problem to be solved by the invention
However, the conventional gas sampling probe has the following problems: because the heater is integrally controlled to be on-off by the temperature controller, the service life of the temperature controller is short, and the work of replacing the temperature controller is complicated. In addition, if replacement of the thermostat is delayed, the drain liquid adheres to the filter, and clogging may occur. Therefore, it is highly desirable to extend the lifetime of the thermostat.
The invention aims to provide a gas sampling probe capable of prolonging the service life of a temperature controller and a flue gas analysis device with the gas sampling probe.
Means for solving the technical problem
(1) One aspect of a gas sampling probe according to the present invention includes: a housing having an opening for introducing a sample gas; a filter which is housed in the housing and removes dust contained in the sampling gas introduced into the housing; a heater unit that heats the filter, the heater unit including: the 1 st heater is a heater for always electrifying; a 2 nd heater for adjusting heating capacity; and a temperature controller for controlling the on/off of the 2 nd heater according to the temperature of the filter, wherein the heater unit is configured to control the on/off of the 2 nd heater by the temperature controller, so that the temperature of the sample gas passing through the filter can be maintained at a temperature at which condensation of the sample gas is suppressed.
According to the structure, only the current flowing to the 2 nd heater in the 1 st heater and the 2 nd heater flows to the temperature controller. Therefore, the value of the current flowing to the thermostat can be reduced as compared with the case where the total value of the currents flowing to the 1 st heater and the 2 nd heater flows to the thermostat. In addition, since the 1 st heater is always energized and only the 2 nd heater is on-off controlled, the capacity of the heater subjected to on-off control can be reduced compared to the conventional one. Therefore, the temperature decrease rate of the filter when the 2 nd heater is turned off is low, and the on-off period of the thermostat is long. Therefore, the service life of the temperature controller is prolonged, and the complexity of replacing the temperature controller is reduced. In addition, even when the thermostat is not normally operated, the filter is heated by the 1 st heater, so that clogging of the filter is less likely to occur.
(2) According to one example of the gas sampling probe, the total heating capacity of the 1 st heater and the 2 nd heater is set to a capacity capable of maintaining the temperature of the sample gas passing through the filter at or above the acid dew point of the sample gas within the lower limit of the usage of the ambient temperature, and the heating capacity of the 1 st heater when the 2 nd heater is not energized is set to a capacity capable of maintaining the components constituting the gas sampling probe at or below the usage limit temperature of the components within the upper limit of the usage of the ambient temperature.
According to this configuration, the capacity of the 1 st heater and the capacity of the 2 nd heater can be appropriately set, and the situation in which the heating capacity of the heater unit is insufficient within the use lower limit value of the ambient temperature is suppressed, and the situation in which the heating capacity of the heater unit becomes excessive within the use upper limit value of the ambient temperature is also suppressed.
(3) According to an example of the gas sampling probe, the 1 st heater and the 2 nd heater are heaters each covering a part of an outer surface of the housing, the 1 st heater is attached so as to cover a lower portion of the housing, and the 2 nd heater is attached in combination so as to cover an upper portion of the housing.
According to such a configuration, as compared with the case where the 1 st heater is attached to the upper portion of the housing, when the 2 nd heater is not energized, convection of the sample gas is likely to occur inside the housing, and therefore the sample gas and the filter can be uniformly heated.
(4) According to one example of the gas sampling probe, the temperature controller is attached to an upper portion of the housing on a side of the 2 nd heater.
According to such a configuration, the thermostat can appropriately turn on/off the 2 nd heater according to a temperature change of the filter, as compared with a case where the thermostat is attached to another position.
(5) One aspect of the flue gas analyzer of the present invention includes the gas sampling probe according to any one of (1) to (4) above.
According to the structure, the service life of the temperature controller used for the gas sampling probe is prolonged, and the complexity of replacing the temperature controller is reduced.
Effects of the invention
According to the gas sampling probe and the flue gas analyzer including the gas sampling probe of the present invention, the lifetime of the temperature controller is increased and clogging of the filter is less likely to occur.
Drawings
Fig. 1 is a schematic view showing a state in which a flue gas analysis device according to an embodiment is attached to a flue.
FIG. 2 is a cross-sectional view of the gas sampling probe of FIG. 1.
Fig. 3 is a circuit diagram of the circuit of the gas sampling probe of fig. 2.
Fig. 4 is a timing diagram illustrating an example of the operation of the gas sampling probe of fig. 2.
Detailed Description
(embodiment mode)
The structure of the flue gas analyzer 1 will be described with reference to fig. 1.
The flue gas analyzer 1 is connected to a flue F connecting a boiler B and a stack C in, for example, a power plant, and measures the concentration of a component to be measured, which is a specific component contained in flue gas discharged from the boiler B through the flue F.
The flue gas analysis device 1 includes: a gas sampling probe (hereinafter referred to as "probe 10"), a pump (not shown), a gas analyzer 70, a plurality of pipes P, and a power supply 60 (see fig. 3). The power supply 60 is an ac power supply or a dc power supply, and is electrically connected to each device so as to supply power to the probe 10, the pump, the gas analyzer 70, and the like. The probe 10 is provided in the flue F so as to be able to collect flue gas flowing through the flue F as a sampling gas. In one example, the probe 10 is provided on a lateral portion or an upper portion of an outer surface of the flue F. The pump is disposed on the downstream side of the probe 10. The downstream side refers to the downstream side in the direction of flow of the sampling gas. The pump and probe 10 are connected by a line P. The gas analyzer 70 is disposed on the downstream side of the pump. The pump and the gas analyzer 70 are connected by a line P. In one example, the gas analyzer 70 is installed on an installation surface (not shown) such as a floor surface in the vicinity of the flue F.
The gas analyzer 70 is an analyzer using an infrared absorption method, a chemiluminescence method, or the like, for example. In one example, the gas analyzer 70 is a complex beam analyzer using an infrared absorption system. In the case of driving the pump, a sample gas is collected via the probe 10, and the collected sample gas flows into the gas analyzer 70. The gas analyzer 70 measures the concentration of a measurement target component contained in the sample gas. An example of the component to be measured is sulfur dioxide.
The structure of the probe 10 will be described with reference to fig. 2.
The probe 10 has a body 20 and a filter 30. The main body 20 includes a housing 21, a flange 23, an introduction-side connecting portion 24, and a discharge-side connecting portion 25. The housing 21 forms a passage 21A through which the sample gas collected from the flue F flows. The housing 21 is cylindrical in shape. The housing 21 includes an opening 24A for introducing a sample gas. The flange 23 is fixed to an upstream end of the housing 21. In one example, the flange 23 is fixed to the flue F by a fastening member (not shown) such as a bolt, and the housing 21 is fastened to the flue F. The probe 10 is connected to the flue F such that the center axis of the housing 21 extends horizontally.
The introduction-side connecting portion 24 is a member provided at an upstream side portion in the casing 21 so as to be fixedly connected to the connecting pipe PF of the flue F. The end of the coupling pipe PF is inserted into the opening 24A formed in the introduction-side connecting portion 24. The passage in the flue F and the passage 21A in the housing 21 communicate with each other through a connecting pipe PF connected to the introduction-side connecting portion 24. The lead-out side connection portion 25 is a member provided at a portion on the downstream side in the housing 21 to fixedly connect the probe 10 and the pipe line P of the pump. The end of the pipe P is inserted into an outlet hole 25A formed in the outlet-side connecting portion 25. The passage 21A in the housing 21 communicates with the pump through a pipe line P connected to the discharge-side connection portion 25.
The filter 30 is, for example, incorporated coaxially in the housing 21 so that the sample gas introduced into the housing 21 is introduced from the outer peripheral side to the inner peripheral side. In one example, the filter 30 is accommodated between the inlet-side connection portion 24 and the outlet-side connection portion 25 in the housing 21. The filter 30 is cylindrical in shape. The filter 30 is, for example, a metal mesh filter. One example of a material constituting the filter 30 is stainless steel. The filter 30 removes dust contained in the sample gas introduced into the housing 21. Since the sample gas from which dust is removed by the filter 30 flows into the gas analyzer 70, the concentration of the measurement target component can be accurately measured.
The probe 10 also has a heater unit 40. The heater unit 40 is provided to heat the filter 30. In one example, the heater unit 40 is disposed on the outer surface 22 of the housing 21. The heater unit 40 generates heat by a current supplied from the power supply 60. The heat generated from the heater unit 40 is transmitted to the filter 30 via the housing 21 and the sample gas flowing through the passage 21A. Therefore, the filter 30 is indirectly heated by the heat of the heater unit 40.
The heater unit 40 includes a 1 st heater 41, a 2 nd heater 42, and a temperature controller 50. The 1 st heater 41 is a heater for always supplying current. The 2 nd heater 42 is a heater for adjusting heating capacity. The temperature controller 50 controls the on/off of the 2 nd heater 42 according to the temperature of the filter 30 (hereinafter, referred to as "filter temperature"). The 1 st heater 41, the 2 nd heater 42, and the temperature controller 50 are electrically connected to a power supply 60 (see fig. 3). In one example, the entire probe 10 is covered with a case (not shown) or the like so that the heaters 41 and 42 and the temperature controller 50 are not exposed to the outside. An example of the material constituting the case is stainless steel.
The 1 st heater 41 and the 2 nd heater 42 are heaters each covering a part of the outer surface 22 of the casing 21. In one example, each of the heaters 41 and 42 is a partially cylindrical band heater. The 1 st heater 41 is attached to cover the lower portion 22B of the outer surface 22 of the housing 21, and the 2 nd heater 42 is attached to cover the upper portion 22A of the outer surface 22 of the housing 21. In one example, the heaters 41 and 42 are coupled by coupling members (not shown) such as bolts, and the heaters 41 and 42 are fixed to the casing 21. The heaters 41 and 42 fixed to the casing 21 constitute a cylinder covering the outer surface 22 of the casing 21.
The temperature controller 50 is configured to be capable of switching a state of electrical connection between the 2 nd heater 42 and the power supply 60 according to a temperature of the outer surface 22 of the case 21. The temperature of the outer surface 22 of the housing 21 has a correlation with the filter temperature. One example of the thermostat 50 is a bimetal thermostat. The thermostat 50 is provided adjacent to the 2 nd heater 42 at the outer surface 22 of the housing 21, for example. In one example, the thermostat 50 is attached to the upper portion 22A of the housing 21 at a side of the 2 nd heater 42. With such a configuration, the thermostat 50 can appropriately control the on/off of the 2 nd heater 42 according to a temperature change of the filter 30, as compared with a case where the thermostat 50 is installed at another position.
The circuit of the probe 10 is explained with reference to fig. 3.
The heater unit 40 is, for example, a parallel circuit in which the 2 nd heater 42 and the temperature controller 50 are connected in series, and the 1 st heater 41 is connected in parallel to the series circuit. The heater unit 40 is configured to control the on/off of the 2 nd heater 42 by the temperature controller 50, so that the temperature of the sample gas passing through the filter 30 (hereinafter referred to as "passing gas temperature") can be maintained at a temperature at which condensation of the sample gas is suppressed. Specifically, the heater unit 40 is configured to be able to keep the passing gas temperature at or above the acid dew point (about 150 ℃) of the sample gas by on-off control of the 2 nd heater 42 by the temperature controller 50. In one example, the heater unit 40 adjusts the filter temperature so that the passing gas temperature is maintained above the acid dew point. The heater unit 40 is configured to be able to keep the members constituting the probe 10 at or below the use limit temperature (about 180 ℃) of the members. In the case where the temperature of the components constituting the probe 10 is kept at or below the use limit temperature, it is difficult to promote degradation by heat of the components constituting the probe 10. The components constituting the probe 10 include a sealing member and the like housed in the case 21.
The total heating capacity of the 1 st heater 41 and the 2 nd heater is set to be a capacity capable of keeping the passing gas temperature at the acid dew point or more within the use lower limit value of the outside gas temperature (hereinafter referred to as "ambient temperature") around the probe 10. The total heating capacity is a heating capacity obtained by adding the heating capacity of the 1 st heater 41 and the heating capacity of the 2 nd heater 42. The lower limit of the use of the ambient temperature is a lower limit temperature at which the probe 10 can normally operate. An example of the lower limit value is-10 ℃. The heating capacity of the 1 st heater 41 when the 2 nd heater 42 is not energized is set to be a capacity capable of keeping the components constituting the probe 10 at the use limit temperature of the components or less within the use upper limit value of the ambient temperature. The upper limit of the ambient temperature is the upper limit temperature at which the probe 10 can operate normally. An example of the upper limit value is 50 ℃. With this configuration, it is possible to appropriately set the capacities of the 1 st heater 41 and the 2 nd heater 42, to suppress the heating capacity of the heater unit 40 from being insufficient at the lower limit of the use of the ambient temperature, and to suppress the heating capacity of the heater unit 40 from being excessive at the upper limit of the use of the ambient temperature.
The temperature controller 50 is configured to be able to connect and disconnect the contact 51 according to the temperature of the outer surface 22 of the housing 21. When the contact 51 of the thermostat 50 is connected, the 1 st heater 41 and the 2 nd heater 42 are electrically connected to the power supply 60. When the filter temperature rises to the 1 st temperature TA in the state where the contact 51 is connected, the contact 51 is cut off. An example of the 1 st temperature TA is 180 ℃. When the contact 51 of the thermostat 50 is cut off, the electrical connection between the 2 nd heater 42 and the power supply 60 is cut off. The 1 st heater 41 is electrically connected to the power supply 60 in both the case where the contact 51 is connected and the case where the contact 51 is disconnected. When the filter temperature decreases to the 2 nd temperature TB lower than the 1 st temperature TA in a state where the contact 51 is disconnected, the contact 51 is connected again. An example of the 2 nd temperature TB is 150 ℃. Fig. 3 shows a state in which the contact 51 of the thermostat 50 is cut off.
The operation of the probe 10 will be described with reference to fig. 4.
Prior to time t11, probe 10 is not in use. At this time, the filter temperature is lower than the 1 st temperature TA and the 2 nd temperature TB, and the contact 51 of the thermostat 50 is connected. At time t11, for example, the switch of power supply 60 is switched from off to on, and the energization of heaters 41 and 42 and gas analyzer 70 is started. The heat generated by the heaters 41 and 42 is transmitted to the filter 30 via the housing 21 and the sample gas flowing through the passage 21A. Therefore, the filter temperature rises. When the filter temperature rises to a predetermined temperature, energization of the pump of the flue gas analyzer 1 is started. An example of the predetermined temperature is the 2 nd temperature TB. By driving the pump, the gas flowing through the flue F is introduced into the casing 21 through the opening 24A.
At time t12, as the filter temperature rises, the filter temperature reaches the 1 st temperature TA, and the contact 51 of the thermostat 50 is cut off. Therefore, the heat generation of the 2 nd heater 42 is stopped, and the amount of heat supplied from the heater unit 40 to the case 21 is reduced. On the other hand, since the current flows in the first heater 41 as before the filter temperature reaches the 1 st temperature TA, the 1 st heater 41 continues to heat the filter 30. Therefore, the filter temperature gradually decreases after the contact 51 is cut.
At time t13, as the filter temperature decreases, the filter temperature reaches the 2 nd temperature TB, and the contact 51 of the thermostat 50 is connected again. Therefore, the 2 nd heater 42 generates heat again, and the amount of heat supplied from the heater unit 40 to the case 21 increases. After the time t13, the filter 30 is heated by the heaters 41 and 42 and the filter temperature is increased in the same manner as in the period from the time t11 to the time t12, and thereafter, the same state as in the period from the time t12 to the time t13 is repeated.
According to the probe 10, as described above, since the 1 st heater 41 generates heat even when the 2 nd heater 42 does not generate heat, the rate of decrease in the filter temperature that decreases as the heat generation of the 2 nd heater stops decreases. Therefore, the on-off period of the thermostat 50 is lengthened, and the life of the thermostat 50 is lengthened. In addition, since only the current flowing through the 2 nd heater 42 among the 1 st heater 41 and the 2 nd heater 42 is caused to flow through the temperature controller 50, the value of the current flowing through the temperature controller 50 is reduced as compared with the case where the total value of the currents flowing through the 1 st heater 41 and the 2 nd heater 42 is caused to flow through the temperature controller 50. Therefore, the lifetime of the thermostat 50 is lengthened. Thus, since the lifetime of the temperature controller 50 is lengthened, the complexity of replacing the temperature controller 50 is reduced.
Even when the temperature controller 50 does not operate normally, the filter 30 is heated by the 1 st heater 41, and therefore clogging of the filter 30 is less likely to occur. Further, since the 1 st heater 41 for always supplying current is provided in the lower portion 22B of the housing 21, even when the contact 51 of the thermostat 50 is cut off or the thermostat 50 does not normally operate, the sample gas flowing through the lower portion 22B side in the housing 21 is always heated by the 1 st heater 41. As compared with the case where the 1 st heater 41 is attached to the upper portion 22A of the housing 21, convection of the sample gas is more likely to occur in the housing 21, and therefore the sample gas and the filter 30 can be uniformly heated. Therefore, the possibility of local temperature reduction of the sample gas and the filter 30 is reduced, and clogging of the filter 30 is more unlikely to occur.
(modification example)
The above-described embodiments are illustrative of the modes that can be adopted by the gas sampling probe and the flue gas analyzer including the gas sampling probe of the present invention, and are not intended to limit the modes. In addition to the embodiments, the present invention may be configured by combining at least 2 non-contradictory modifications of the embodiments and modifications of the embodiments described below, for example.
The mounting positions of the 1 st heater 41 and the 2 nd heater 42 may be changed arbitrarily. In example 1, the 1 st heater 41 is attached to cover the upper portion 22A of the outer surface 22 of the housing 21, and the 2 nd heater 42 is attached to cover the lower portion 22B of the outer surface 22 of the housing 21. In example 2, the 1 st heater 41 is attached to cover one side portion of the outer surface 22 of the housing 21, and the 2 nd heater 42 is attached to cover the other side portion of the outer surface 22 of the housing 21. In example 3, at least one of the 1 st heater 41 and the 2 nd heater 42 is attached to the inner peripheral surface of the housing 21. According to this example, the respective heaters 41 and 42 are driven to heat the filter 30 via the sample gas flowing through the passage 21A of the housing 21. In example 4, at least one of the 1 st heater 41 and the 2 nd heater 42 is attached to the filter 30 or a member around the filter. According to this example, the filter 30 is directly heated by driving the heaters 41 and 42. The heaters 41 and 42 in examples 3 and 4 may be heaters other than band heaters.
The heater unit 40 includes 1 or more other heaters in addition to the 1 st heater 41 and the 2 nd heater 42. In this example, the heater unit 40 is preferably configured such that another heater and the thermostat are connected in parallel.
The circuit of the heater unit 40 may be arbitrarily changed. In example 1, the 1 st heater 41 is electrically connected to the power supply 60, and the 2 nd heater 42 and the temperature controller 50 are electrically connected to a power supply other than the power supply 60. In example 2, the 1 st heater 41 is electrically connected to a power supply other than the power supply 60, and the 2 nd heater 42 and the temperature controller 50 are electrically connected to the power supply 60.
The mounting position of the thermostat 50 may be arbitrarily changed. In the 1 st example, the thermostat 50 is installed in the outer surface 22 of the housing 21 on the upstream side of the 2 nd heater 42. In example 2, the thermostat 50 is provided adjacent to the 1 st heater 41 on the outer surface 22 of the housing 21.
Description of the reference numerals
1 flue gas analysis device
10 gas sampling probe
21 casing
22 outer surface
22A upper part
22B lower part
24A opening part
30 filter
40 Heater Unit
41 st heater
42 nd 2 heater
50 temperature controller.
Claims (5)
1. A gas sampling probe, comprising:
a housing having an opening for introducing a sample gas;
a filter which is housed in the housing and removes dust contained in the sampling gas introduced into the housing;
a heater unit heating the filter,
the heater unit includes: the 1 st heater is a heater for always electrifying; a 2 nd heater for adjusting heating capacity; and a temperature controller for controlling the on-off of the No. 2 heater according to the temperature of the filter,
the heater unit is configured to: the temperature of the sample gas passing through the filter can be maintained at a temperature at which condensation of the sample gas is suppressed by on-off control of the 2 nd heater by the temperature controller.
2. The gas sampling probe of claim 1,
the total heating capacity of the 1 st heater and the 2 nd heater is set to be a capacity capable of keeping the temperature of the sample gas passing through the filter at or above the acid dew point of the sample gas within a lower limit value of the ambient temperature,
the heating capacity of the 1 st heater when the 2 nd heater is not energized is set to be a capacity capable of keeping a member constituting the gas sampling probe at a temperature equal to or lower than a use limit temperature of the member within a use upper limit value of the ambient temperature.
3. The gas sampling probe of claim 1,
the 1 st heater and the 2 nd heater are heaters each covering a part of an outer surface of the housing,
the 1 st heater is installed to cover a lower portion of the housing, and the 2 nd heater is installed to cover an upper portion of the housing in combination.
4. The gas sampling probe of claim 3,
the temperature controller is installed in the upper part of the housing at the side of the 2 nd heater.
5. A flue gas analysis device is characterized in that,
a gas sampling probe according to any one of claims 1 to 4.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-200560 | 2017-10-16 | ||
| JP2017200560 | 2017-10-16 | ||
| PCT/JP2018/029002 WO2019077845A1 (en) | 2017-10-16 | 2018-08-02 | Gas sampling probe and flue exhaust gas analysis device provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111226104A true CN111226104A (en) | 2020-06-02 |
| CN111226104B CN111226104B (en) | 2023-07-25 |
Family
ID=66173693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880066823.0A Active CN111226104B (en) | 2017-10-16 | 2018-08-02 | Gas sampling probe and flue gas analysis device provided with same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6973497B2 (en) |
| CN (1) | CN111226104B (en) |
| WO (1) | WO2019077845A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60148079A (en) * | 1984-01-11 | 1985-08-05 | 松下電器産業株式会社 | Sheet heater for vehicle |
| JPH0567490A (en) * | 1991-09-06 | 1993-03-19 | Matsushita Electric Ind Co Ltd | Heater unit |
| JPH1048107A (en) * | 1996-07-31 | 1998-02-20 | Shimadzu Corp | Gas sampling probe |
| CN101455521A (en) * | 2007-12-14 | 2009-06-17 | 邵志成 | Electric heating kettle |
| CN203551340U (en) * | 2013-11-27 | 2014-04-16 | 中科宇图天下科技有限公司 | Low temperature resistant flue gas sampling probe |
| US20140165705A1 (en) * | 2012-12-14 | 2014-06-19 | Yonquan Li | Sample Line Management In A Fluid Analyzer System |
| CN104407161A (en) * | 2014-11-24 | 2015-03-11 | 汇众翔环保科技河北有限公司 | Smoke gas on-line monitoring system and smoke gas on-line monitoring method |
| CN204270172U (en) * | 2014-12-08 | 2015-04-15 | 梁伟国 | A kind of temperature control equipment |
-
2018
- 2018-08-02 JP JP2019549124A patent/JP6973497B2/en active Active
- 2018-08-02 CN CN201880066823.0A patent/CN111226104B/en active Active
- 2018-08-02 WO PCT/JP2018/029002 patent/WO2019077845A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60148079A (en) * | 1984-01-11 | 1985-08-05 | 松下電器産業株式会社 | Sheet heater for vehicle |
| JPH0567490A (en) * | 1991-09-06 | 1993-03-19 | Matsushita Electric Ind Co Ltd | Heater unit |
| JPH1048107A (en) * | 1996-07-31 | 1998-02-20 | Shimadzu Corp | Gas sampling probe |
| CN101455521A (en) * | 2007-12-14 | 2009-06-17 | 邵志成 | Electric heating kettle |
| US20140165705A1 (en) * | 2012-12-14 | 2014-06-19 | Yonquan Li | Sample Line Management In A Fluid Analyzer System |
| CN203551340U (en) * | 2013-11-27 | 2014-04-16 | 中科宇图天下科技有限公司 | Low temperature resistant flue gas sampling probe |
| CN104407161A (en) * | 2014-11-24 | 2015-03-11 | 汇众翔环保科技河北有限公司 | Smoke gas on-line monitoring system and smoke gas on-line monitoring method |
| CN204270172U (en) * | 2014-12-08 | 2015-04-15 | 梁伟国 | A kind of temperature control equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019077845A1 (en) | 2020-11-19 |
| JP6973497B2 (en) | 2021-12-01 |
| WO2019077845A1 (en) | 2019-04-25 |
| CN111226104B (en) | 2023-07-25 |
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