KR102354614B1 - Cross-duct type complex measuring device with ultrasonic flow meter - Google Patents

Abstract

The present invention relates to a cross-duct composite measurement device including an ultrasonic flow meter. An objective of the present invention is to construct a probe in which a gas phase measurement device, a dust phase measurement device, and an ultrasonic flow meter are integrated and to unify air purge systems for probe contamination prevention. To achieve the objective, the cross-duct composite measurement device including an ultrasonic flow meter comprises: an integrated probe for transmission installed on one sidewall in a duct and transceiving a laser signal for optical axis alignment with an integrated probe for reception, a plurality of optical signals for gas or dust measurement, and an ultrasonic signal for flow measurement; a transmission part unit connected to the integrated probe for transmission to transmit a laser signal for optical axis alignment with an integrated probe for reception and a plurality of optical signals for gas or dust measurement and generate or signal-process an ultrasonic signal for flow measurement; an integrated probe for reception opposed and installed on the other sidewall in the duct to be optically axially aligned with the integrated probe for transmission, and transceiving a laser signal for optical axis alignment with the integrated probe for transmission, a plurality of optical signals for gas or dust measurement, and an ultrasonic signal for flow measurement; and a reception part signal processing unit connected to the integrated probe for reception to transmit a laser signal for optical axis alignment with the integrated probe for transmission and a plurality of optical signals for gas or dust measurement and generate or signal-process an ultrasonic signal for flow measurement. The installation time and costs of a plurality of individual measurement devices are reduced, and a concentration dilution problem of gas to be measured by compressed air for purge can be resolved.

Description

Cross-duct type complex measuring device with ultrasonic flow meter

The present invention relates to a cross-duct type composite measuring instrument including an ultrasonic velocity meter, and more particularly, an integrated probe including a gas phase measuring instrument, a dust measuring instrument, an ultrasonic velocity measuring instrument, and an extra sensing unit. By implementing it, it is possible to reduce the time and cost required to install a plurality of individual measuring instruments, and an air purge system for preventing contamination such as an optical probe for transmitting and receiving a plurality of light within the integrated probe and an ultrasonic transceiver for transmitting and receiving ultrasound is integrated into one. Ultrasonic capable of improving the precision of the measuring instrument by implementing an air purge system and making the air injection structure an air knife structure to solve the problem of dilution of the concentration of the gas to be measured in the duct by the compressed air injected from the air purge system It relates to a cross-duct type complex measuring instrument including a flow meter.

In general, in order to measure the flow rate or exhaust gas in the duct, as illustrated in FIG. 1 , a gas phase measuring device 11, TDLS (Tunable Diode Laser absorption Spectroscopy) between the wall and the wall of the duct 10 Anti-corrosion meter (12), dust phase meter (13), ultrasonic velocity meter (14), temperature sensor (15) for temperature measurement, oxygen meter (16) for oxygen measurement, etc. are installed to measure the flow rate or exhaust gas in the duct. ingredients, etc.

These measuring instruments are installed as a cross-duet type that crosses between the walls of the duct, and as an average calculation method of the measurement sample, they have a representative flow rate measurement than other measurement methods.

, 광의 파장

, 가스별 흡광계수

, 광 송신부(11a,12a)와 광 수신부(11b,12b) 간의 도달거리 L, 가스 농도 C에 대하여 광 수신부(11b,12b)에서 측정되는 유해가스를 통과한 광의 세기

는, 아래의 수학식 1로 정의될 수 있다.The gas phase measuring device 11 and the TDLS type measuring device 12 are _{devices that measure NH 3} , SO ₂ , CO, NO, etc. using infrared and ultraviolet rays according to the principle of BEER-LAMBERT, As illustrated in (a) of FIG. 2, the paired light transmitting units 11a, 12a and light receiving units 11b, 12b are installed between the wall and the wall of the duct so that the optical axis is aligned to transmit and receive light in the duct. and the intensity of the initial light source transmitted from the light transmitters 11a and 12a

, the wavelength of light

, extinction coefficient for each gas

, the intensity of light passing through the harmful gas measured by the light receiving units 11b and 12b with respect to the reaching distance L between the light transmitting units 11a and 12a and the light receiving units 11b and 12b and the gas concentration C

may be defined by Equation 1 below.

[Equation 1]

As can be seen from Equation 1 above, the gas phase measuring device 11 and the TDLS type measuring device 12 have the reaching distance L between the light transmitting units 11a and 12a and the light receiving units 11b and 12b and the gas As a device for measuring the change in intensity of light due to the concentration (C), that is, the change in intensity of light passing through the harmful gas measured in the light receivers 11b and 12b depends on the reach distance (L) between the light transmitter/receiver, so the reach distance By changing (L), it becomes possible to improve the measurement accuracy.

, 소멸상수 K, 광 송신부(13a)와 광 수신부(13b) 간의 도달거리 L, 먼지 농도 C에 대하여 광 수신부(13b)에서 측정되는 먼지를 통과한 광의 세기

는, 아래의 수학식 2로 정의될 수 있다.The dust phase measuring device 13 is a device for measuring dust, etc. using the same principle as the gas phase measuring device 11 or the TDLS type measuring device 12, but using light of a single wavelength, as illustrated in FIG. A pair of light transmitting unit 13a and light receiving unit 13b is installed between the wall and the wall of the duct so that the optical axis is aligned, and is configured to transmit and receive light in the duct, the initial light source transmitted from the light transmitting unit 13a century

, the extinction constant K, the reaching distance L between the light transmitting unit 13a and the light receiving unit 13b, and the intensity of light passing through the dust measured by the light receiving unit 13b with respect to the dust concentration C

may be defined by Equation 2 below.

[Equation 2]

As can be seen from Equation 2 above, the dust phase measuring device 13 is the same as the gas phase measuring device 11 or the TDLS type measuring device 12, and the change in the intensity of the light is the reaching distance (L) between the optical transmitter/receiver. Therefore, the measurement accuracy can be improved by changing the reach (L).

, 하향 초음파 송수파부(14b)에서 측정되는 하향 방향의 초음파 도달시간

은 아래의 수학식 3으로 정의될 수 있다.As illustrated in FIG. 2( c ), the ultrasonic anemometer 14 is a pair of upward ultrasonic transmitter and receiver 14a and downward ultrasonic transmitter and receiver 14b arranged between the wall and the wall of the duct so that the ultrasonic transceiver axis is aligned. Installed opposite to each other and installed to have an inclination angle (α) in the flow direction of the fluid, respectively, to radiate and receive ultrasonic waves in the duct, the velocity v of the fluid in the duct, the ultrasonic velocity C, and the ultrasonic wave transceiver (14a, 14b) of the The ultrasonic arrival time in the upward direction measured by the upward ultrasonic wave transceiver 14a with respect to the separation distance L

, the ultrasonic arrival time in the downward direction measured by the downward ultrasonic transceiver 14b

may be defined by Equation 3 below.

[Equation 3]

,

,

From this, the flow velocity v of the fluid is,

can be defined as

However, in order to measure the measuring elements (gas phase, dust, flow velocity, etc.) in the conventional measuring devices as described above, each hole must be made in the walls of both sides of the duct for individual measuring devices to be installed, and also the gas and dust phases The probe of the measuring instrument and the transducer of the ultrasonic velocity meter must be directly exposed to the harmful gas flow in the chimney or duct. Each is configured to be kept individually.

In addition, the optical axis of the transmitter and the receiver of the cross duct type measuring device as described above must be maintained, and the ultrasonic method of the velocity meter also needs to be installed in alignment with the optical axis of the pair of measuring devices in order to reduce the interference signal as much as possible, so the installation time and cost increase , which caused the maintenance cost to rise due to failure.

KR 10-2152226 B1 2020.08.31. Announcement

Therefore, the present invention is to solve the above problems, and the technical problem to be solved by the present invention is a gas phase measuring device and a dust measuring device (hereinafter, collectively referred to as 'gas and dust measuring device') ), an ultrasonic velocity meter, and a cross-duct type composite measuring instrument including an ultrasonic velocity meter that can reduce the time and cost required to install a plurality of individual measuring instruments by implementing an integrated probe including an extra sensing unit.

In addition, another technical problem to be solved by the present invention is to implement an air purge system for preventing contamination such as a plurality of optical transmitting/receiving units and ultrasonic transmitting/receiving units in an integrated probe as one air purge system, and the air injection structure A cross-duct type complex including an ultrasonic velocimeter that can improve the precision of measuring equipment by solving the problem of dilution of the concentration of the gas to be measured in the duct by the compressed air for purge sprayed from the air purge system by forming an air knife structure. It is intended to provide a measuring instrument.

One embodiment of the present invention for achieving the above object is installed so as to have an inclination angle with respect to the flow direction of the fluid passing through the duct is fixed to one side wall in the duct with a single flange, and with the integrated probe for reception A guide part and a window for guiding the transmission of a laser signal for optical axis alignment and a plurality of optical signals for gas phase or dust phase measurement, respectively, and transmission of a first ultrasonic signal or a second ultrasonic wave for flow velocity measurement an integrated probe for transmission integrally provided with an ultrasonic probe for reception of a signal; It is connected to the rear end of the integrated probe for transmission and emits a laser signal for optical axis alignment with the integrated probe for reception, generates and transmits multiple optical signals for gas or dust measurement, and generates a first ultrasonic signal for flow velocity measurement. or a transmitter unit for signal processing a second ultrasonic signal; It is fixed to the other side wall of the duct with one flange and is installed opposite the integrated probe for transmission so as to be located on the same optical axis as the integrated probe for transmission. Laser signal, gas or dust for optical axis alignment with the integrated probe for transmission A reception integrated probe integrally provided with a guide unit and a window for guiding reception of a plurality of optical signals for measurement, and an ultrasound probe for transmitting or receiving a second ultrasound signal for flow velocity measurement; And, it is connected to the rear end of the integrated probe for reception to receive a laser signal for optical axis alignment with the integrated probe for transmission, receive and process a plurality of optical signals for gas or dust measurement, and a second ultrasonic signal for flow velocity measurement It is a cross-duct type composite measuring instrument including an ultrasonic velocity meter;

The cross duct type composite measuring device including an ultrasonic velocity meter according to an embodiment of the present invention is installed on one side of the integrated probe for transmission, and compressed air for contamination prevention is sent through an air purge pipe and the integrated probe for transmission through a nozzle Transmitter air purge that horizontally sprays on the window and the probe of the first ultrasonic wave transceiver; And, the receiving unit air purge installed on one side of the receiving integrated probe, compressed air for contamination prevention through an air purge pipe, and horizontally spraying the window of the receiving integrated probe and the probe of the second ultrasonic wave transceiver through the nozzle; It may be implemented in a preferred embodiment by further including.

According to the present invention, it is possible to reduce the time and cost required for installing a plurality of individual measuring instruments by implementing an integrated probe including a gas phase measuring instrument, a dust measuring instrument, an ultrasonic velocity meter, and an extra sensing unit.

In addition, according to the present invention, an air purge system for preventing contamination of a plurality of optical transmitting/receiving units and ultrasonic transmitting/receiving units in an integrated probe is implemented as a single air purge system, and the air spray structure is formed as an air knife structure. By doing so, it is possible to solve the problem of dilution of the concentration of the gas to be measured by the compressed air for purge sprayed from the air purge system, thereby providing the advantage of contributing to the improvement of the precision of the measuring instrument.

1 is a schematic diagram showing an example of a conventional cross duct type measuring device installation.
2 (a) to (c) are schematic diagrams exemplified to explain the principle of operation of a general measuring device.
3 is a schematic diagram illustrating an installation example of a cross-duct type complex measuring instrument including an ultrasonic velocimeter according to the present invention.
4 is a cross-sectional view illustrating an example in which the window of the integrated probe for transmission of FIG. 3 is configured as an integrated window.
5(a) and 5(b) are detailed views illustrating excerpts from the ends of the integrated probe for transmission and the integrated probe for reception of FIG. 3, respectively.
6 is a cross-sectional view illustrating an example in which the window of the integrated probe for transmission of FIG. 3 is configured without the integrated window.
7A and 7B are block diagrams illustrating internal configurations of a transmitter unit and a receiver signal processing unit.
8 (a) and (b) is a partial cross-sectional view illustrating an excerpt of the air knife structure of the air purge of the transmitter or receiver installed in the integrated probe for transmission or reception according to the present invention, and the cleaning agent inlet to the transmitter or receiver air purge It is a partial cross-sectional view showing an example in which is formed.

Hereinafter, the configuration and operation of a cross-duct type composite measuring instrument including an ultrasonic velocimeter according to a preferred embodiment of the present invention and the effect thereof will be described in detail with reference to the accompanying drawings.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, it is understood that there may be various equivalents and modifications that can be substituted for them at the time of the present application. shall.

3 is a schematic diagram illustrating an installation example of a cross-duct type complex measuring instrument including an ultrasonic velocity meter according to the present invention, and FIG. 4 is a cross-sectional view showing an example in which the window of the integrated probe for transmission of FIG. 3 is configured as an integrated window, FIG. 5 (a) and (b) are detailed views illustrating each excerpted end of the integrated probe for transmission and the integrated probe for reception of FIG. 3, and FIG. 6 is a window of the integrated probe for transmission of FIG. 3 without an integrated window It is a cross-sectional view showing a configuration example, and FIGS. 7 (a) and (b) are block diagrams illustrating the internal configuration of a transmitter unit and a receiver signal processing unit, and FIGS. 8 (a) and (b) are in the present invention As a partial cross-sectional view illustrating an example of extracting and exemplifying the air knife structure of the air purge of the transmitter or receiver installed in the integrated probe for transmission or reception by the The cross duct type composite measuring instrument including an ultrasonic velocity meter includes an integrated probe for transmission 110 and a transmitter unit 120 installed on one wall of the duct, as illustrated in FIG. 3, and an integrated probe for reception installed on the other wall of the duct ( 130) and the receiver signal processing unit 140 may be implemented in one embodiment, and the cross-duct type composite measuring instrument including an ultrasonic velocity meter according to an embodiment of the present invention is a transmitter air purge 150, receiver air It may be implemented in a preferred embodiment by further including a purge 160 .

The integrated probe 110 for transmission is installed to be fixed to one side wall of the duct 10 by a single flange (not shown) as illustrated in FIG. 3 , and installed to have an inclination angle with respect to the flow direction of the fluid passing through the duct do. The integrated probe 110 for transmission is shown in FIGS. 4 and 5 ( As illustrated in a), a laser guide unit 111 formed in the center of the probe, a plurality of light guide units 112a and 112b formed around the laser guide unit 111 and a first ultrasonic wave transceiver unit 114 , and the integrated window 113 is integrally configured.

The laser guide unit 111 is formed in the center of the integrated probe 110 for transmission, and guides the transmission of a laser signal for optical axis alignment with the integrated probe for reception emitted from the transmission unit.

The plurality of light guide units 112a and 112b are formed around the laser guide unit 111 to guide transmission of an optical signal for gas measurement and an optical signal for dust measurement, respectively.

The integrated window 113 is formed at the tip of the laser guide unit 111 and the plurality of light guide units 112a and 112b, and integrates the cross-sections of the laser guide unit 111 and the plurality of light guide units 112a and 112b. By covering, the laser signal for optical axis alignment with the integrated probe for reception and multiple optical signals for gas or dust measurement are transmitted.

The first ultrasonic transmitter/receiver unit 114 is formed around the laser guide unit 111, transmits a first ultrasonic signal for measuring the flow rate, and receives a second ultrasonic signal for measuring the flow rate transmitted from the integrated probe for reception. signal processing. As illustrated in FIG. 4, the first ultrasonic wave transmitting/receiving unit 114 has a matching layer 114b and a damper 114c installed at the front and rear ends of the vibrator 114a as the center, and an electric wire 114d for driving the vibrator. It may be configured to be connected to one side of the vibrator 114a.

In addition, as illustrated in FIG. 6 as another embodiment, the integrated probe 110 for transmission is A plurality of optical probe insertion holes 115a in which a laser guide part 111 is formed in the central part and the individual optical probes 116a and 116b of a gas or dust meter can be directly inserted around the laser guide part 111 as a center. , 115b), an ultrasonic probe insertion hole 115c into which the ultrasonic probe of the first ultrasonic wave transceiver 114 can be directly inserted may be formed. That is, in this case, the individual optical probes of the gas or dust measuring instrument may be inserted into the optical probe insertion holes 115a and 115b in a form in which individual windows 117a and 117b are provided, respectively, and the ultrasonic wave of the first ultrasonic wave transceiver 114 . The probe may be inserted into the ultrasonic probe insertion hole 115c, and a laser guide part window 118 covering only the laser guide part 111 is provided at the tip of the laser guide part 111 to replace the integrated window. . Accordingly, the integrated probe 110 for transmission includes a laser guide part 111 in the center, a plurality of optical probe insertion holes 115a and 115b and an ultrasonic probe insertion hole 115c formed around the laser guide part 111 , and a laser guide. It may also be implemented in a form including a laser guide part window 118 covering only the part, a first ultrasonic wave transceiver 114, and individual optical probes 116a and 116b of a gas or dust meter.

The transmitter unit 120 is connected to the rear end of the integrated probe 110 for transmission as illustrated in FIG. 3 , and emits a laser signal for optical axis alignment with the integrated probe for reception and multiple light for gas or dust measurement It generates and transmits a signal, generates a first ultrasonic signal for flow velocity measurement, or receives and processes a second ultrasonic signal. To this end, the transmitter unit 120 includes a laser light source 121, a plurality of light sources 122a and 122b, and a first ultrasonic transmitter/receiver controller 123, as illustrated in (a) of FIG. can be

The laser light source 121 generates a laser signal for optical axis alignment with the integrated probe for reception and transmits it to the laser guide unit 111 of the integrated probe 110 for transmission.

The plurality of light sources 122a and 122b generate an optical signal for gas phase measurement and an optical signal for dust phase measurement, respectively, and each light guide part 112a and 112b of the integrated probe 110 for transmission. ) is sent to

The first ultrasonic transmitter/receiver controller 123 generates a first ultrasonic signal for measuring the flow rate and transmits it to the first ultrasonic transmitter/receiver 114 of the integrated probe 110 for transmission or through the first ultrasonic transmitter/receiver 114 The received second ultrasonic signal is signal-processed.

The integrated probe 130 for reception is fixed to the other side wall in the duct 10 with one flange (not shown), as illustrated in FIG. 3 , and is installed so as to be located on the same optical axis as the integrated probe 110 for transmission. It is installed opposite to the credit integration probe (110). The integrated probe 130 for reception is located at the center of the probe as illustrated in (b) of FIG. 5 for receiving a laser signal for optical axis alignment with the integrated probe for transmission and a plurality of optical signals for gas or dust measurement The formed laser guide unit 131 , the plurality of light guide units 132a and 132b formed around the laser guide unit 131 , the second ultrasonic wave transceiver 134 , and the integrated window 133 are integrally provided. is composed by

The laser guide unit 131 is formed in the center of the integrated probe 130 for reception, and guides reception of a laser signal for optical axis alignment with the integrated probe for transmission.

The plurality of light guide portions 132a and 132b are formed around the laser guide portion 131 and guide reception of an optical signal for gas phase measurement and an optical signal for dust phase measurement, respectively. .

The integrated window 133 is formed at the tip of the laser guide 131 and the plurality of light guides 132a and 132b, and integrates the cross-sections of the laser guide 131 and the plurality of light guides 132a and 132b. By covering, the laser signal for optical axis alignment with the integrated probe for transmission and multiple optical signals for gas or dust measurement are transmitted.

The second ultrasonic transmitter/receiver unit 134 is formed around the laser guide unit 131, transmits a second ultrasonic signal for measuring the flow rate, and receives the first ultrasonic signal for measuring the flow rate transmitted from the integrated probe for transmission. signal processing. Similar to the first ultrasonic wave transmitting/receiving unit 134, matching layers and dampers are installed at front and rear ends of the vibrator as the center, and an electric wire for driving the vibrator is connected to one side of the vibrator.

In addition, such an integrated probe 130 for reception as another embodiment, like the integrated probe for transmission as illustrated in FIG. 6 , a laser guide part 131 is formed in the central part, and the laser guide part 131 is formed around the laser guide part 131 as a center. A plurality of optical probe insertion holes into which individual optical probes of the gas or dust meter can be directly inserted may be machined. That is, in this case as well, individual optical probes of the gas or dust measuring instrument may be inserted into the optical probe insertion hole in a form provided with individual windows, and a laser guide unit window covering only the laser guide unit is provided at the tip of the laser guide unit. It can be formed to replace the integrated window.

The signal processing unit 140 of the receiver is connected to the rear end of the integrated probe 130 for reception as illustrated in FIG. 3 , and receives and processes a laser signal for optical axis alignment with the integrated probe for transmission and gas or dust A plurality of optical signals for measurement are received and signal-processed, and a second ultrasonic signal for flow velocity measurement is generated or a first ultrasonic signal is received and signal-processed. To this end, the receiver signal processing unit 140 includes a laser signal processing unit 141 in the center, a plurality of optical signal processing units 142a and 142b, and a second ultrasonic transceiver controller 143 as illustrated in FIG. 7(b). ) may be provided integrally.

The laser signal processing unit 141 in the center receives and processes the laser signal for optical axis alignment with the integrated probe for transmission passing through the laser guide unit 131 of the integrated probe 130 for reception.

The plurality of optical signal processing units 142a and 142b receive an optical signal for gas measurement and an optical signal for dust measurement received through the plurality of light guide units 132a and 132b of the integrated probe 130 for reception, respectively. signal processing.

The second ultrasonic transmitter/receiver controller 143 generates a second ultrasonic signal for measuring the flow rate and transmits it to the second ultrasonic transmitter/receiver 134 of the integrated probe 130 for reception or through the second ultrasonic transmitter/receiver 134 The received first ultrasound signal is received and signal-processed.

The transmitter air purge 150 is installed on one side of the integrated probe 110 for transmission, and pressurizes high-pressure compressed air for contamination prevention through the air purge pipe 151 and the integrated probe 110 for transmission through the nozzle 152 . ) (eg, the integrated window 113, or each window of the individual optical probe of the gas and dust meter and the individual probe of the ultrasonic transducer). To this end, the nozzle 152 of the integrated probe 110 for transmission has an air knife structure that horizontally sprays compressed air into the integrated window (or each window of the individual optical probe of the gas and dust measuring instrument and the individual probe of the ultrasonic transceiver). The injection hole 152a is formed. Here, the injection hole 152a of the air knife structure is an integrated window of the integrated probe 110 for transmission (or each window of an individual optical probe of a gas and dust measuring instrument and an individual ultrasonic transmitter/receiver unit, as illustrated in FIG. 8A ). Probe), the outer side (upward direction in the drawing) or the central side (downward direction in the drawing) of the integrated probe 110 for transmission so that the dispersion angles (a1, a2) and injection pressure of the compressed air can be adjusted. installed so that the position can be changed. To this end, on one side of the nozzle 150 of the integrated probe 110 for transmission, as illustrated in FIG. At least one position control switch 154 capable of adjusting the air dispersion angle and the injection pressure may be provided. In addition, the nozzle 150 injection port 152a of the integrated probe 110 for transmission is disposed to face the flow direction of the fluid or exhaust gas in the duct, so that the compressed air for purge sprayed from the nozzle 152 is combined with the gas to be measured in the duct. Make sure not to mix. In addition, the cleaning agent inlet 153 may be formed on one side of the air purge pipe 151 as illustrated in FIG. 8(b) in the air purge 150 of the transmitter. In the cleaning agent inlet 153, a cleaning agent (eg, water) for cleaning the integrated window of the integrated probe 110 for transmission (or each window of the individual optical probe of the gas and dust meter and the individual probe of the ultrasonic transducer) at high pressure. or a mixture of water and detergent) may be introduced, and for this purpose, a check valve for intermittent flow of unidirectional fluid is additionally installed in the detergent inlet 153 to be installed from the outside of the air purge pipe 151 . It is preferable to block the external outflow of the compressed air in the air purge pipe 151 while injecting the cleaning agent in one direction.

The receiving unit air purge 160 is installed on one side of the receiving integrated probe 130 , and pressurized high-pressure compressed air for contamination prevention through the air purge pipe 161 , and the receiving integrated probe 130 through the nozzle 162 . ) of the window (eg, the integrated window 133 or each window of the individual optical probe of the gas and dust meter and the individual probe of the ultrasonic transducer). To this end, air that horizontally injects compressed air into the integrated window 133 (or each window of the individual optical probe of the gas and dust measuring instrument and the individual probe of the ultrasonic transceiver) also in the nozzle 162 of the integrated probe 130 for reception. The injection port 162a of the knife structure is formed. Here, the injection hole 162a of the air knife structure is also the window of the integrated probe for reception (the integrated window 133 or the individual optical probe of the gas, dust measuring instrument) similar to the integrated probe 110 for transmission illustrated in FIG. It is horizontally spaced apart from each window and each probe of the ultrasonic transmitter/receiver), but it is installed so as to be able to change the position to the outside or the center side of the integrated receiving probe so that the dispersion angle and injection pressure of compressed air can be adjusted. To this end, the nozzle 160 of the receiving integrated probe 130 also adjusts the position of the injection hole 162a of the nozzle 162 up and down as illustrated in FIG. At least one position control switch 164 capable of adjusting the dispersion angle and the injection pressure may be provided. In addition, the nozzle 160 injection port 162a of the integrated probe 130 for reception is also disposed to face the fluid or exhaust gas flow direction in the duct, similar to the nozzle 152 of the transmitter air purge 150, in the nozzle 162. It is configured so that the compressed air for purge sprayed does not mix with the gas to be measured in the duct. Also, in the receiver air purge 160 , similar to the transmitter air purge 150 , a detergent inlet 163 may be formed on one side of the air purge pipe 161 . The cleaning agent for cleaning the integrated window 133 of the receiving integrated probe 130 (or each window of the individual optical probe of the gas and dust measuring instrument and the individual probe of the ultrasonic transceiver unit) of the receiving integrated probe 130 is at high pressure in the cleaning agent inlet 163 , for example. For example, water or a mixture of water and detergent) can be introduced, and for this purpose, a check valve for controlling the unidirectional fluid flow is additionally installed in the detergent inlet 163 to further install an air purge pipe 161 Preferably, it is configured to block the outflow of the compressed air in the air purge pipe 161 while injecting the cleaning agent from the outside to the inside in one direction.

The operation of the cross-duct type composite measuring instrument including an ultrasonic anemometer according to a preferred embodiment of the present invention configured as described above and its effect will be described as follows.

First, the integrated probe 110 for transmission includes a laser guide unit 111 in the center thereof, a plurality of light guide units 112a and 112b around the laser guide unit 111 and a first ultrasonic wave transceiver 114 therein. Formed integrally, the cross-section of the laser guide unit 111 and the plurality of light guide units 112a and 112b are integrated at the front end of the integrated probe 110 for transmission as illustrated in FIGS. 4 and 5 (a). to form an integrated window 113 that can cover It transmits the first ultrasound signal through the receiver or enables the reception of the second ultrasound signal transmitted from the integrated probe for reception.

Alternatively, the integrated probe 110 for transmission is another embodiment, as illustrated in FIG. 6 , a laser guide part window for forming a laser guide part 111 in the central portion thereof and covering only the laser guide part 111 at an end thereof. Gas having separate windows 117a and 117b by separately installing 1112 and processing a plurality of optical probe insertion holes 115a and 115b and ultrasonic probe insertion holes 115c around the laser guide unit 111 , respectively. Alternatively, after the individual optical probes 116a and 116b of the dust meter and the individual probes of the first ultrasonic wave transceiver 114 can be inserted, respectively, the individual optical probes 116a and 116b of the gas or dust meter and the first ultrasonic wave By inserting individual probes of the transceiver unit 114 into each optical probe insertion hole 115a-115c, respectively, a window is configured to replace the integrated window of the integrated probe 110 for transmission, and the laser signal for optical axis alignment is a laser guide. to pass through the sub-window 118 , and an optical signal for gas or dust measurement to be transmitted through each of the individual windows 117a and 117b, respectively, and to pass through the first ultrasonic wave transceiver 114 . It makes it possible to transmit an ultrasound signal or receive a second ultrasound signal transmitted from an integrated probe for reception.

In addition, on one side of the integrated probe 110 for transmission, a transmitter air purge 150 through which compressed air is compressed through an air purge tube 151 is installed, and an air knife structure injection hole ( Install a nozzle 152 having a 152a), wherein the nozzle 152a has an integrated window 113 at the end of the integrated probe 110 for transmission (or each window of the individual optical probe of the gas phase, dust phase meter, and It is installed so that compressed air can be horizontally sprayed to the individual probes of the ultrasonic transmitter and receiver).

At the rear end of the integrated probe 110 for transmission that is installed as described above, a laser light source 121 in the center, a plurality of light sources 122a and 122b, and a first ultrasonic transmitter/receiver controller 123 are integrally provided with a transmitter By connecting the unit 120, a laser signal for optical axis alignment, an optical signal for measuring gas or dust, and a first ultrasonic signal for measuring a flow rate are transmitted through the laser guide unit 111 of the integrated probe 110, a plurality of light guides The units 112a and 112b and the first ultrasonic wave transmitting/receiving unit 114 enable it to be transmitted or receive a second ultrasonic wave signal for measuring the flow rate.

Next, the integrated probe 130 for reception integrates a laser guide part 131 in the center, a plurality of light guide parts 132a and 132b around the laser guide part 131 and a second ultrasonic wave transceiver 134 inside. The optical axis by installing an integrated window 133 capable of integrating and covering the cross-sections of the laser guide unit 131 and the plurality of light guide units 132a and 132b at the tip of the integrated probe 130 for reception as well. A laser signal for alignment and an optical signal for gas phase or dust phase measurement can be transmitted through the integrated window 133, respectively, and transmit a second ultrasound signal through the second ultrasound transceiver 134 or from the integrated probe for transmission It enables reception of the transmitted first ultrasound signal.

In addition, on one side of the integrated probe 130 for reception, a receiving unit air purge 160 through which compressed air is compressed through an air purge pipe 161 is installed, and an air knife structure injection hole ( Install the nozzle 162 having a 162a), but the nozzle 162a of the nozzle 162 is the integrated window 133 (or each window of the individual optical probe of the gas phase, dust phase meter) at the end of the integrated probe 130 for reception and It is installed so that compressed air can be horizontally sprayed to the individual probes of the ultrasonic transmitter and receiver).

At the rear end of the integrated receiving probe 130 for which the installation is completed as described above, a laser signal processing unit 141 in the center, a plurality of optical signal processing units 142a and 142b, and a second ultrasonic transmitter/receiver controller 143 are integrated. By connecting the signal processing unit 140 provided with the receiving unit, the laser guide unit 131 of the integrated probe 130 for reception, the plurality of light guide units 132a and 132b and the second ultrasonic wave transmitting/receiving unit 134, respectively, are connected. The received laser signal for optical axis alignment, the optical signal for gas or dust measurement, and the first ultrasonic signal for flow velocity measurement may be signal-processed, or a second ultrasonic signal for flow velocity measurement may be transmitted.

Next, as illustrated in FIG. 3 , the integrated probe 110 for transmission is installed using one flange on one side wall of the duct 10, but the flow direction of the fluid or exhaust gas (or gas to be measured) passing through the duct Installed to have an inclination angle with respect to the duct 10, using another flange on the other side wall to fix the integrated probe 130 for reception and install the optical axis so as to be located on the same optical axis as the integrated probe 110 for transmission. Align and install to face the integrated probe 110 for transmission. Of course, at this time, the integrated probe 130 is also installed to have the same inclination angle with respect to the opposite direction of the flow of the fluid passing through the duct.

When the laser light source 121 of the transmitter unit 120 emits a laser signal for optical axis alignment in the state in which the installation is completed in this way, the emitted laser signal is the laser guide part 111 of the integrated probe 110 for transmission. Guided through the duct 10 through the measurement target gas discharge space to be able to be delivered to the laser guide unit 131 of the integrated probe 130 for reception, the reception unit signal connected to the rear end of the integrated probe 130 for reception The laser signal processing unit 141 of the processing unit 140 processes the signal to perform optical axis alignment between the integrated probe 110 for transmission and the integrated probe 130 for reception.

In the state in which the optical axis alignment between the integrated probe 110 for transmission and the integrated probe 130 for reception as described above is made, the optical signal for gas phase measurement or dust measurement from the plurality of light sources 122a and 122b of the transmitter unit 120 . When emitted, the emitted optical signal is guided through each light guide portion 112a, 112b of the integrated probe 110 for transmission, and the integrated probe 130 for reception through the measurement target gas discharge space in the duct 10. can be transmitted to the respective light guide units 132a and 132b of Thus, it is possible to obtain a gas measurement value or a dust measurement value flowing through the gas discharge space to be measured in the duct 10 .

In addition, in the state in which the optical axis alignment between the integrated probe 110 for transmission and the integrated probe 130 for reception as described above is made, the integrated probe for transmission is controlled by the first ultrasonic transceiver controller 123 of the transmitter unit 120 . The integrated probe for reception by emitting a first ultrasonic signal for measuring the flow rate from the first ultrasonic transceiver 114 of 110 or by the control of the second ultrasonic transceiver controller 143 of the receiver signal processing unit 140 ( When the second ultrasonic wave transmitter 134 of 130) emits a second ultrasonic signal for measuring the flow rate, the first ultrasonic signal is transmitted through the gas discharge space to be measured in the duct 10 of the integrated probe 130 for reception. The second ultrasonic wave transmitting/receiving unit 134 is transmitted to the signal processing unit 143 of the receiving unit signal processing unit 140 for signal processing, and the second ultrasonic wave signal is transmitted through the gas discharge space to be measured in the duct 10. It is transmitted to the first ultrasonic wave transceiver 114 of the integrated probe 110 for transmission, is signal-processed by the first ultrasonic wave transceiver controller 123 of the transmitter unit 120, and flows through the gas discharge space to be measured in the duct 10 Allows you to obtain a measurement of the velocity of the fluid.

On the other hand, as described above, in the integrated window 113 of the integrated probe 110 for transmission installed in the duct 10 (or each window of the individual optical probe of the gas and dust meter and the individual probe of the ultrasonic transceiver), there is no adsorbent or dust. When contamination occurs due to the attachment of foreign substances such as foreign substances, the accuracy of the measuring device may be lowered. Therefore, the transmitter air purge 150 is driven to pump high-pressure compressed air through the air purge pipe 151 and the nozzle 152 Horizontal injection at high pressure into the integrated window 113 of the integrated probe 110 for transmission (or each window of the individual optical probe of the gas and dust meter and the individual probe of the ultrasonic transducer) through the injection hole 152a of the air knife structure of By doing so, foreign substances such as adsorbents or dust adhering to the integrated window 113 of the integrated probe 110 for transmission (or each window of the individual optical probe of the gas and dust measuring instrument and the individual probe of the ultrasonic transceiver) can be cleanly removed. there will be At this time, since the nozzle 152 injection port 152a of the transmitter air purge 150 is disposed to face the flow direction of the fluid or exhaust gas in the duct, the compressed air for purge sprayed from the injection port 152a of the nozzle 152 is in the duct. Since it does not mix with the gas to be measured, it is possible to prevent a decrease in the precision of the measuring device.

In addition, foreign substances such as adsorbents or dust are attached to the integrated window 133 of the receiving integrated probe 130 (or each window of the individual optical probe of the gas and dust measuring instrument and the individual probe of the ultrasonic transmitter/receiver) to cause contamination. Then, since the accuracy of the measuring device may be lowered, even at this time, the receiving unit air purge 160 is driven to pump high-pressure compressed air through the air purge pipe 161 and the integrated probe 130 for reception through the nozzle 162 . ) of the integrated window 133 (or each window of the individual optical probe of the gas and dust meter and the individual probe of the ultrasonic wave transceiver) of the integrated window 133 (or gas, dust) of the integrated probe 130 for reception by horizontal spraying. It is possible to cleanly remove foreign substances such as adsorbents or dust attached to each window of the individual optical probe of the measuring instrument and the individual probe of the ultrasonic transceiver. Even at this time, since the nozzle 162 injection port 162a of the receiver air purge 160 is disposed to face the fluid or exhaust gas flow direction in the duct, the compressed air for purge sprayed from the injection port 162a of the nozzle 162 is the duct It is not mixed with the gas to be measured in the inside, so it is possible to prevent a decrease in the precision of the measuring device.

In addition, in the transmitter air purge 150 and the receiver air purge 160, detergent inlets 153 and 163 are formed on one side of the air purge pipes 151 and 161, respectively. Since it is possible to input at high pressure together with the compressed air of It is also possible to cleanly remove foreign substances such as adsorbents or dust that are more strongly attached to each window and individual probes of the ultrasonic transmitter and receiver).

According to the present invention as described above, it is possible to provide the advantage of reducing the time and cost required for installing a plurality of individual measuring instruments by implementing an integrated probe including a gas phase measuring instrument, a dust measuring instrument, an ultrasonic velocity meter, and an extra sensing unit. there will be

In addition, according to the present invention, an air purge system for preventing contamination of a plurality of optical transmitting/receiving units and ultrasonic transmitting/receiving units in an integrated probe is implemented as a single air purge system, and the air spray structure is formed as an air knife structure. In the air purge system, it is possible to solve the problem of dilution of the concentration of the gas to be measured by compressed air by preventing the compressed air that is sprayed flat in the direction of the flow of the fluid in the duct from mixing with the gas to be measured in the duct, thereby improving the precision of the measuring device. Contributing benefits can be provided.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which are various modifications and variations from these descriptions by those skilled in the art to which the present invention pertains. Transformation is possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

10: duct 110: transmitter integrated probe
111,131: laser guide part 112a, 112b, 132a, 132b: light guide part
113,133: integrated window 114: first ultrasonic transceiver
114a: vibrator 114b: matching layer
114c: brake 114d: electric wire for driving the vibrator
115a, 115b: optical probe insertion hole 115c: ultrasonic probe insertion hole
116a, 116b: Optical probes for gas and dust meters
117a, 117b: individual windows of gas and dust meters
118: laser guide unit window 120: transmitter unit
121: laser light source 122a, 122b: light source
123: first ultrasonic transmitter and receiver controller 130: receiver integrated probe
134: second ultrasonic wave transceiver 140: receiver signal processing unit
141: laser signal processing unit 142a, 142b: optical signal processing unit
143: second ultrasonic wave transmitter and receiver controller 150: transmitter air purge
151,161: air purge pipe 152,162: nozzle
152a, 162a: injection port 153,163: detergent inlet
154,164: position control switch 160: receiver air purge

Claims (10)

It is fixed to one side wall of the duct with a single flange and installed to have an inclination angle with respect to the flow direction of the fluid passing through the duct. For transmission including a guide unit and a window for guiding the transmission of a plurality of optical signals for phase measurement, respectively, and an ultrasonic probe for transmitting a first ultrasonic signal or receiving a second ultrasonic signal for flow velocity measurement integrated probe 110;
It is connected to the rear end of the integrated probe 110 for transmission and emits a laser signal for optical axis alignment with the integrated probe for reception and generates and transmits a plurality of optical signals for gas phase or dust phase measurement and a transmitter unit 120 for generating a first ultrasonic signal for measuring the flow rate or for signal processing a second ultrasonic signal;
It is fixed to the other side wall of the duct by a single flange and installed opposite to the integrated probe 110 for transmission so as to be positioned on the same optical axis as the integrated probe 110 for transmission, and optical axis alignment with the integrated probe for transmission A guide part and a window for guiding the reception of a laser signal and a plurality of optical signals for gas phase or dust phase measurement, respectively, and transmission of a second ultrasonic signal for flow velocity measurement or a first ultrasonic signal an integrated probe 130 for reception integrally provided with an ultrasound probe for reception; and
It is connected to the rear end of the integrated probe 130 for reception and receives a laser signal for optical axis alignment with the integrated probe for transmission and receives a plurality of optical signals for gas phase or dust phase measurement. A cross-duct type complex measuring instrument including an ultrasonic velocity meter, characterized in that it comprises; a signal processing unit 140 for processing and generating a second ultrasonic signal for flow velocity measurement or signal processing for a first ultrasonic signal. According to claim 1,
It is installed on one side of the integrated probe 110 for transmission and pressurizes compressed air for contamination prevention through the air purge pipe 151, and the window of the integrated probe 110 for transmission and the first ultrasonic transmission through the nozzle 152. Transmitting unit air purge 150 for horizontally spraying the wave probe; and
It is installed on one side of the integrated probe 130 for reception and pressurizes compressed air for contamination prevention through the air purge pipe 161, and the window of the integrated probe 130 for reception and the second ultrasound transmission through the nozzle 162. Cross-duct type composite measuring instrument including an ultrasonic velocity meter, characterized in that it further comprises; According to claim 1, wherein the integrated probe for transmission (110),
a laser guide unit 111 formed in the center of the integrated probe for transmission 110 to guide the transmission of a laser signal for optical axis alignment with the integrated probe for reception emitted from the transmitting unit;
A plurality of light guide units 112a formed around the laser guide unit 111 to guide transmission of an optical signal for measuring a gas phase and an optical signal for measuring a dust phase emitted from the transmitter unit, respectively. , 112b);
The laser guide part 111 and the plurality of light guide parts (112a, 112b) is formed at the front end of the integrated covering the cross-section of the laser guide part 111 and the plurality of light guide parts (112a, 112b) integrated probe for reception an integrated window 113 for transmitting a laser signal for optical axis alignment with and a plurality of optical signals for gas phase or dust phase measurement; and
A first ultrasonic wave transceiver 114 that is formed around the laser guide unit 111 and transmits a first ultrasonic signal for measuring the flow rate and receives a second ultrasonic signal for measuring the flow rate transmitted from the integrated probe for reception; Cross-duct type composite measuring instrument including an ultrasonic velocimeter, characterized in that it is integrally provided. According to claim 1, wherein the integrated probe for transmission (110),
a laser guide unit 111 formed in the center of the integrated probe for transmission 110 to guide the transmission of a laser signal for optical axis alignment with the integrated probe for reception emitted from the transmitting unit;
Insertion of the individual optical probe 116a of the gas phase measuring instrument and the individual optical probe 116b of the dust measuring instrument formed on the periphery of the laser guide unit 111 and installed in the transmitter unit and first ultrasonic transmission and reception a plurality of optical probe insertion holes 115a and 115b and an ultrasound probe insertion hole 115c for guiding the insertion of the ultrasound probe into the wave part 114, respectively;
a laser guide part window 118 formed at the tip of the laser guide part 111 and transmitting a laser signal for optical axis alignment with the integrated probe for reception by covering only the laser guide part 111;
A first ultrasonic wave transceiver 114 that is inserted into and installed in the ultrasonic probe insertion hole 115c and transmits a first ultrasonic signal for measuring the flow rate and receives a second ultrasonic signal for measuring the flow rate transmitted from the integrated probe for reception. ; and
Individual optics of a gas or dust measuring instrument that are respectively inserted into and installed into the plurality of optical probe insertion holes 115a and 115b and transmit an optical signal for gas phase measurement and an optical signal for dust phase measurement, respectively Probes (116a, 116b); Cross-duct type composite measuring instrument including an ultrasonic velocity meter, characterized in that it is configured to include. According to claim 1, wherein the transmitter unit 120,
A laser light source 121 that generates a laser signal for optical axis alignment with the integrated probe for reception and transmits it to the integrated probe for transmission;
a plurality of light sources (122a, 122b) for generating an optical signal for measuring a gas phase and an optical signal for measuring a dust phase, respectively, and transmitting them to an integrated probe for transmission; and
A first ultrasonic transmitter/receiver controller 123 for generating a first ultrasonic signal for measuring the flow rate and transmitting it to the integrated probe for transmission or signal processing a second ultrasonic signal received through the integrated probe for transmission; A cross-duct type composite measuring instrument including an ultrasonic velocity meter. According to claim 1, wherein the integrated probe 130 for reception,
a laser guide unit 131 formed in the center of the integrated probe 130 for reception to guide reception of a laser signal for optical axis alignment with the integrated probe 110 for transmission;
a plurality of light guide portions 132a and 132b formed around the laser guide portion 131 to guide reception of an optical signal for gas phase measurement and an optical signal for dust phase measurement, respectively;
The laser guide unit 131 and the plurality of light guide units (132a, 132b) formed at the front end of the integrated covering the cross-section of the laser guide unit 131 and the plurality of light guide units (132a, 132b) integrated probe for transmission an integrated window 133 for transmitting a laser signal for optical axis alignment with and a plurality of optical signals for gas phase or dust phase measurement; and
A second ultrasonic wave transceiver 134 that is installed around the laser guide unit 131 and transmits a second ultrasonic signal for measuring the flow rate and receives the first ultrasonic signal for measuring the flow rate transmitted from the integrated probe for transmission; Cross-duct type composite measuring instrument including an ultrasonic velocimeter, characterized in that it is integrally provided. According to claim 1, wherein the receiving unit signal processing unit 140,
a laser signal processing unit 141 in the center for receiving and processing a laser signal for optical axis alignment with the integrated probe for transmission through the integrated probe for reception;
a plurality of optical signal processing units 142a and 142b for receiving and signal processing an optical signal for gas phase measurement and an optical signal for dust phase measurement through an integrated probe for reception; and
A second ultrasonic wave transmitter/receiver controller 143 for generating a second ultrasonic signal for measuring the flow rate and transmitting it to the integrated probe for reception or signal processing the first ultrasonic signal received through the integrated probe for reception; A cross-duct type composite measuring instrument including an ultrasonic velocity meter. According to claim 2, The transmitter air purge 150 or the receiver air purge 160,
A cross including an ultrasonic velocimeter, characterized in that it includes; a cleaning agent inlet installed on one side of the air purge tube and blocking the outflow of compressed air in the air purge tube while injecting the cleaning agent in one direction from the outside to the inside of the air purge tube Duct type composite measuring instrument. The method according to any one of claims 2 or 8, wherein each nozzle of the air purge unit 150 or the air purge unit 160 is,
The integrated probe 110 for transmission or the integrated probe 130 for transmission is horizontally spaced apart from each window of the integrated probe 110 for transmission or the integrated probe 130 for transmission so that the dispersion angle and injection pressure of compressed air can be adjusted. ), a cross-duct type composite measuring instrument including an ultrasonic velocimeter, characterized in that it is installed so as to be able to change its position to the center side or the outside of the window, and has an air knife structure injection port that horizontally sprays compressed air on the window. The method of claim 9, wherein each nozzle of the air purge unit 150 or the air purge unit 160 is,
Cross-duct type composite measuring instrument including an ultrasonic velocity meter, characterized in that the injection port is arranged to face the flow direction of the fluid or exhaust gas in the duct, so that the compressed air for purge sprayed from the injection port of each nozzle does not mix with the gas to be measured in the duct .

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