CN218130892U

CN218130892U - Sampling pretreatment device of laser gas analyzer

Info

Publication number: CN218130892U
Application number: CN202222714478.3U
Authority: CN
Inventors: 侍振
Original assignee: Jiangsu Puwei Environment Technology Co ltd
Current assignee: Jiangsu Puwei Environment Technology Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2022-12-27
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a laser gas analyzer sample preprocessing device relates to gas analyzer technical field. Including filtering the jar, fixed mounting has the sampling pipe on filtering the lower lateral wall of jar, fixed mounting has first solenoid electric valve on the sampling pipe, it installs metal filters and flexible filter core down from last to installing in proper order to filter the jar inner wall, metal filters and flexible filter core corresponding filter jar on be provided with recoil mechanism on the lateral wall, it all is provided with first cloth gas mechanism to lie in metal filters and flexible filter core upside in the recoil mechanism. The utility model discloses increase the condensation function on filtering gas's basis, make the gaseous preliminary treatment effect of sample better, do benefit to simultaneously and adjust gaseous temperature, make gaseous subsequent testing result more accurate, can carry out the recoil to the dust that is infected with on metal filters and the flexible filter core, avoid blockking up, guarantee the smooth and easy of sample, do benefit to the use.

Description

Sampling pretreatment device of laser gas analyzer

Technical Field

The utility model relates to a gas analysis appearance technical field specifically is laser gas analysis appearance sample preprocessing device.

Background

Laser gas analyzer technology is essentially a spectral absorption technique that obtains the concentration of a gas by analyzing the selective absorption of laser light by the gas. The difference between the laser spectrum and the traditional infrared spectrum absorption technology is that the semiconductor laser spectrum width is far smaller than the broadening of a gas absorption spectrum line, the laser gas analyzer is used for gas containing more impurities such as coke oven gas, and in order that the sampled gas is beneficial to the detection of the laser gas analyzer, the sampled gas needs to be pretreated.

Among the prior art, traditional laser gas analyzer sample preprocessing device only carries out a filtration to the dust impurity in the gas, and simple filtration makes the gas cleanliness factor after the sample not up to standard, still is difficult to carry out accurate detection to gas, leads to the detection accuracy not high, can be infected with a large amount of dusts on filter screen and the filter core simultaneously, leads to the filter screen to be blockked up with the filter core, influences follow-up gaseous normal flow, causes unable normal sample.

SUMMERY OF THE UTILITY MODEL

The utility model provides a laser gas analyzer sample preprocessing device to solve the problem in the background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a sampling pretreatment device of a laser gas analyzer comprises a filter tank, wherein a sampling pipe is fixedly mounted on the lower side wall of the filter tank, the lower surface of the sampling pipe is connected with a gas pipe, a first electromagnetic control valve is fixedly mounted on the sampling pipe, a metal filter screen and a flexible filter element are sequentially mounted on the inner wall of the filter tank from top to bottom, a backflushing mechanism is arranged on the upper side wall of the filter tank corresponding to the metal filter screen and the flexible filter element, a first gas distribution mechanism is arranged on the backflushing mechanism and located on the upper side of the metal filter screen and the upper side of the flexible filter element, a gas outlet of the filter tank is connected with a gas inlet of a condenser through a first connecting pipe, an electromagnetic flow regulating valve is fixedly mounted on the first connecting pipe, a gas outlet of the condenser is connected with a second gas distribution mechanism through a second connecting pipe, the second gas distribution mechanism is mounted in the gas collecting tank, an electric heating rod is fixedly mounted on the upper side wall of the gas collecting tank, a gas outlet valve is arranged on the lower side position of the right side face of the gas collecting tank, a monitoring mechanism is arranged on the upper side wall of the gas collecting tank, a right side of the gas collecting tank, a monitoring mechanism is fixedly mounted on the upper surface of the gas collecting tank, and an air exhaust mechanism is connected with the backflushing mechanism.

Furthermore, a guide plate is fixedly mounted on the inner wall of the lower side of the filter tank, the upper surface of the guide plate is lower than the upper surface of the sampling pipe by 1cm, and a slag discharge valve is mounted on the lower side wall of the filter tank corresponding to the end head on the left side of the guide plate.

Further, recoil mechanism includes gas distribution box, electromagnetic pulse valve, standpipe and cross pipe, gas distribution box fixed mounting filters a jar upper surface, the electromagnetic pulse valve is installed to the right flank of gas distribution box, the lower fixed surface of gas distribution box installs the standpipe, and the standpipe inserts and locates in filtering the jar, it all is provided with the cross pipe to lie in metal filters net and flexible filter core upper surface upside on the standpipe.

Further, first gas distribution mechanism includes annular gas distribution pipe and goes out the gas head, annular gas distribution pipe fixed mounting is on the cross, annular gas distribution pipe lower surface evenly is provided with out the gas head, second gas distribution mechanism is the same with first gas distribution mechanism structure.

Furthermore, the monitoring mechanism comprises a temperature sensor, a pressure sensor and a control box, the temperature sensor and the pressure sensor are installed on the upper side wall of the gas collection box, and the control box is fixedly installed on the front side face of the gas collection box.

Further, the air exhaust mechanism comprises an exhaust fan, a guide pipe and a second electromagnetic control valve, the exhaust fan is fixedly installed on the upper surface of the air collection box, an air inlet and an air outlet of the exhaust fan are respectively connected with the air collection box and the electromagnetic pulse valve through the guide pipe, and the second electromagnetic control valve is installed on the guide pipe.

Compared with the prior art, the utility model provides a laser gas analyzer sample preprocessing device possesses following beneficial effect:

1. this laser gas analyzer sampling preprocessing device, can dehumidify gas through setting up the condenser, and condense lower impurity etc. of freezing point, then discharge, increase the condensation function on filtering gas's basis, the gaseous pretreatment effect that makes the sample is better, condenser and the cooperation of electrical heating stick simultaneously, do benefit to the temperature to gas and adjust, make gaseous subsequent testing result more accurate, air exhaust mechanism in with the gas collection box sample gas suction recoil mechanism, need not to extract the outside gas, make the inside gas circulation, avoid the sample gas to be polluted.

2. This laser gas analysis appearance sample preprocessing device through setting up the mechanism of bleeding during with gas suction recoil mechanism in the gas collecting tank, the first gas distribution mechanism of rethread blows out, can recoil with the dust that is infected with on the flexible filter core of crossing metal filters, avoids blockking up, guarantees the smooth and easy of sample, does benefit to the use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

In the figure: 1. a filtration tank; 2. a sampling tube; 3. a gas delivery pipe; 4. a first solenoid control valve; 5. a metal filter screen; 6. a flexible filter element; 7. a recoil mechanism; 701. a gas distribution box; 702. an electromagnetic pulse valve; 703. a vertical tube; 704. a cross pipe; 8. a first air distribution mechanism; 801. an annular gas distribution pipe; 802. an air outlet head; 9. a first connecting pipe; 10. a condenser; 11. an electromagnetic flow regulating valve; 12. a second connecting pipe; 13. a second air distribution mechanism; 14. a gas collection tank; 15. an electrical heating rod; 16. an air outlet valve; 17. a monitoring mechanism; 171. a temperature sensor; 172. a pressure sensor; 173. a control box; 18. an air extraction mechanism; 181. an exhaust fan; 182. a conduit; 183. a second solenoid control valve; 19. a baffle; 20. a slag discharge valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the utility model discloses a sampling preprocessing device of laser gas analyzer, including filter tank 1, fixed mounting has sampling pipe 2 on the lower lateral wall of filter tank 1, and the lower surface of sampling pipe 2 is connected with gas-supply pipe 3, fixed mounting has first solenoid electric valve 4 on the sampling pipe 2, metal filters 5 and flexible filter core 6 are installed from last to down in proper order to filter tank 1 inner wall, be provided with recoil mechanism 7 on the corresponding filter tank 1 of metal filters 5 and flexible filter core 6 on the lateral wall, it all is provided with first gas distribution mechanism 8 to lie in metal filters 5 and flexible filter core 6 upside on the recoil mechanism 7, the gas outlet of filter tank 1 is connected with condenser 10 air inlet through first connecting pipe 9, fixed mounting has electromagnetic flow control valve 11 on the first connecting pipe 9, the gas outlet of condenser 10 is connected with second gas distribution mechanism 13 through second connecting pipe 12, second gas distribution mechanism 13 is installed in gas collection tank 14, fixed mounting has electrical heating rod 15 on the last lateral wall of gas collection tank 14, the right side position of gas tank 14 is provided with the gas discharge valve 12, the gas collection tank 14 on the downside position is provided with gas collection tank 18 and monitoring mechanism 18, the upper side is connected with gas collection tank 14.

Concretely, filter on the downside inner wall of jar 1 fixed mounting have guide plate 19, and guide plate 19 upper surface is less than 2 upper surfaces 1cm of sampling pipe, guide plate 19 left side end corresponding filter 1 downside wall mounting of jar has slag discharging valve 20.

In this embodiment, the flow guide plate 19 enables the impurities filtered out and blown out by back flushing to flow towards the slag discharge valve 20, so that the slag discharge valve 20 can discharge the impurities conveniently.

Specifically, the backflushing mechanism 7 includes an air distribution box 701, an electromagnetic pulse valve 702, a standpipe 703 and a cross pipe 704, the air distribution box 701 is fixedly mounted on the upper surface of the filter tank 1, the electromagnetic pulse valve 702 is mounted on the right side surface of the air distribution box 701, the standpipe 703 is fixedly mounted on the lower surface of the air distribution box 701, the standpipe 703 is inserted into the filter tank 1, and the standpipe 703 is located on the upper surface of the metal filter screen 5 and the upper surface of the flexible filter core 6 and is provided with the cross pipe 704.

In this embodiment, the electromagnetic pulse valve 702 makes the gas in the pumping mechanism 18 rush into the gas distribution box 701, then flow into the vertical tube 703 through the gas distribution box 701, and then blow into the cross pipe 704 through the vertical tube 703 and then blow into the first gas distribution mechanism 8.

Specifically, the first air distribution mechanism 8 includes an annular air distribution pipe 801 and an air outlet head 802, the annular air distribution pipe 801 is fixedly mounted on the cross pipe 704, the air outlet heads 802 are uniformly arranged on the lower surface of the annular air distribution pipe 801, and the second air distribution mechanism 13 has the same structure as the first air distribution mechanism 8.

In this embodiment, the pulse gas in the upper and lower annular gas distribution pipes 801 is blown out through the gas outlet head 802, and the gas outlet head 802 blows off impurities on the metal filter screen 5 and the flexible filter element 6.

Specifically, the monitoring mechanism 17 includes a temperature sensor 171, a pressure sensor 172 and a control box 173, the temperature sensor 171 and the pressure sensor 172 are installed on the upper side wall of the gas collection box 14, and the control box 173 is fixedly installed on the front side surface of the gas collection box 14.

In this embodiment, the temperature sensor 171 and the pressure sensor 172 can detect the temperature and the pressure of the sampled gas in the gas collection box 14, and transmit the information to the control box 173.

Specifically, the air exhaust mechanism 18 comprises an exhaust fan 181, a conduit 182 and a second electromagnetic control valve 183, the exhaust fan 181 is fixedly mounted on the upper surface of the air collection box 14, an air inlet and an air outlet of the exhaust fan 181 are respectively connected with the air collection box 14 and the electromagnetic pulse valve 702 through the conduit 182, and the second electromagnetic control valve 183 is mounted on the conduit 182.

In this embodiment, the exhaust fan 181 pumps the gas in the gas collection tank 14 into the backflushing mechanism 7 through the conduit 182, so that the internal gas circulates without pumping the external gas, thereby preventing the sampled gas from being polluted.

When the gas sampling device is used, the control box 173 opens the first electromagnetic control valve 4, gas in the gas conveying pipe 3 flows into the filter tank 1 through the sampling pipe 2, the metal filter screen 5 and the flexible filter element 6 in the filter tank 1 filter dust impurities and tar, the filtered sampling gas enters the condenser 10 through the first connecting pipe 9, the flow rate of the sampling gas can be adjusted through the electromagnetic flow adjusting valve 11, the condenser 10 fully condenses the sampling gas, the condenser 10 condenses the gas in the sampling gas, removes moisture, and simultaneously reduces the temperature of the sampling gas, the purified regional gas flows into the gas collecting box 14 through the second connecting pipe 12, the temperature sensor 171 and the pressure sensor 172 in the monitoring mechanism 17 can detect the temperature and the gas pressure of the sampling gas in the gas collecting box 14 and transmit the information to the control box 173, the preprocessed gas enters the laser gas analyzer through the gas outlet valve 16 according to the information of the control box 173, the preprocessed gas has better preprocessing effect, after the preprocessed gas is used, the flow adjusting valve 11 is closed, the second electromagnetic control valve 183 is opened, the preprocessed gas flows into the gas through the gas outlet pipe 182, the electromagnetic control box extracts the gas, the gas is blown out through the electromagnetic flow adjusting valve 701, the sampling gas is blown into the electromagnetic flow adjusting valve 703, the electromagnetic gas outlet pipe 703, the electromagnetic gas is sucked into the electromagnetic gas sampling head 21, the electromagnetic gas sampling mechanism 10, the electromagnetic gas is prevented from being polluted by the electromagnetic gas sampling head 802, the electromagnetic gas inlet pipe 702, the electromagnetic gas sampling head 802, the electromagnetic gas sampling mechanism 802, the electromagnetic gas is extracted by the electromagnetic gas, the electromagnetic gas distribution mechanism 703, the electromagnetic gas is prevented from being blown out, the electromagnetic gas outlet 21, the electromagnetic gas from the electromagnetic gas distribution mechanism 702, the electromagnetic gas distribution head 802, the electromagnetic gas distribution mechanism 702, the electromagnetic flow of the electromagnetic flow distribution mechanism 702, the electromagnetic flow distribution head 21, is beneficial to use.

To sum up, this laser gas analysis appearance sample preprocessing device increases the condensation function on filtering gas's basis, makes the gaseous pretreatment effect of sample better, does benefit to simultaneously and adjusts gaseous temperature, makes gaseous subsequent testing result more accurate, can carry out the recoil to the dust that is infected with on metal filters 5 and the flexible filter core 6, avoids blockking up, guarantees smooth and easy of sample, does benefit to the use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Laser gas analysis appearance sample preprocessing device, including filtering jar (1), its characterized in that: the device is characterized in that a sampling pipe (2) is fixedly mounted on the lower side wall of the filter tank (1), the lower surface of the sampling pipe (2) is connected with a gas conveying pipe (3), a first electromagnetic control valve (4) is fixedly mounted on the sampling pipe (2), a metal filter screen (5) and a flexible filter element (6) are sequentially mounted on the inner wall of the filter tank (1) from top to bottom, a backflushing mechanism (7) is arranged on the upper side wall of the filter tank (1) corresponding to the metal filter screen (5) and the flexible filter element (6), a first gas distribution mechanism (8) is arranged on the upper sides of the metal filter screen (5) and the flexible filter element (6) on the backflushing mechanism (7), the gas outlet of the filter tank (1) is connected with the gas inlet of a condenser (10) through a first connecting pipe (9), a first flow regulating valve (11) is fixedly mounted on the first connecting pipe (9), the gas outlet of the condenser (10) is connected with a second gas distribution mechanism (13) through a second connecting pipe (12), the second gas distribution mechanism (13) is mounted in the gas collecting tank (14), a gas collecting rod (14) is mounted on the upper side wall of the gas collecting tank (14), and a gas collecting side wall (15) is arranged on the right side wall of the gas collecting tank (14), an air exhaust mechanism (18) is fixedly mounted on the upper surface of the air collection box (14), and the air exhaust mechanism (18) is connected with the recoil mechanism (7).

2. The laser gas analyzer sampling pretreatment device according to claim 1, characterized in that: filter on the downside inner wall of jar (1) fixed mounting have guide plate (19), and guide plate (19) upper surface is less than sampling pipe (2) upper surface 1cm, guide plate (19) left side end corresponding filtration jar (1) lower side wall mounting has slag discharging valve (20).

3. The laser gas analyzer sampling pretreatment device according to claim 1, characterized in that: recoil mechanism (7) are including gas distribution box (701), electromagnetic pulse valve (702), standpipe (703) and cross pipe (704), gas distribution box (701) fixed mounting is in filtering jar (1) upper surface, electromagnetic pulse valve (702) are installed to the right flank of gas distribution box (701), the lower fixed surface of gas distribution box (701) installs standpipe (703), and standpipe (703) insert and locate in filtering jar (1), it all is provided with cross pipe (704) to lie in metal filters (5) and flexible filter core (6) upper surface upside on standpipe (703).

4. The laser gas analyzer sampling pretreatment device according to claim 1, characterized in that: the first air distribution mechanism (8) comprises an annular air distribution pipe (801) and an air outlet head (802), the annular air distribution pipe (801) is fixedly installed on the cross pipe (704), the air outlet head (802) is uniformly arranged on the lower surface of the annular air distribution pipe (801), and the second air distribution mechanism (13) is identical to the first air distribution mechanism (8) in structure.

5. The laser gas analyzer sampling pretreatment device according to claim 1, characterized in that: the monitoring mechanism (17) comprises a temperature sensor (171), a pressure sensor (172) and a control box (173), the temperature sensor (171) and the pressure sensor (172) are installed on the upper side wall of the gas collecting box (14), and the control box (173) is fixedly installed on the front side face of the gas collecting box (14).

6. The laser gas analyzer sampling pretreatment device according to claim 1, characterized in that: the air exhaust mechanism (18) comprises an exhaust fan (181), a guide pipe (182) and a second electromagnetic control valve (183), wherein the exhaust fan (181) is fixedly installed on the upper surface of the air collection box (14), an air inlet and an air outlet of the exhaust fan (181) are respectively connected with the air collection box (14) and the electromagnetic pulse valve (702) through the guide pipe (182), and the second electromagnetic control valve (183) is installed on the guide pipe (182).