CN217688100U

CN217688100U - Take extraction formula oxygen content analysis mechanism of pulse blowback

Info

Publication number: CN217688100U
Application number: CN202221309394.5U
Authority: CN
Inventors: 马得草; 陈静辉; 刘陶然; 陈建章; 秦月; 孟令轩
Original assignee: Cangzhou Jihuan Veolia Environmental Services Co Ltd
Current assignee: Cangzhou Jihuan Veolia Environmental Services Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-10-28
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to the technical field of accessories for incineration treatment of solid dangerous goods, in particular to an extraction type oxygen content analysis mechanism with pulse back flushing; the device can be used under complex working conditions such as the outlet of a hazardous waste boiler and the like, can run under the working conditions of dustiness and easy coking for a long time, and simultaneously reduces the frequency of online cleaning and maintenance; visit the pipe, be used for flue gas oxygen content detection's analysis unit, have demonstration and transmission function's changer, air jet pump and gas holder including the sampling, analysis unit and the inside intercommunication of sampling visit the pipe, be provided with the sampling valve between sampling visit pipe and the analysis unit, the output and the sampling of gas holder are visited the inside intercommunication of pipe, install the blowback valve between gas holder and the sampling visit pipe, the built-in zirconia oxygen analysis probe of analysis unit, zirconia oxygen analysis probe is connected with the changer electricity, the input of air jet pump and analysis unit's output intercommunication.

Description

Take extraction formula oxygen content analysis mechanism of pulse blowback

Technical Field

The utility model relates to a solid hazardous articles incineration disposal auxiliary device's technical field especially relates to a take extraction formula oxygen content analysis mechanism of pulse blowback.

Background

Currently, the forms of measuring the oxygen content of a boiler are mainly classified into a plug-in type and a draw-out type. The plug-in type is widely used, and has the advantages of simple structure, convenient installation and high reaction speed; the defect is that if the working condition of the monitoring position is high dust and easy to coke directly in the flue, a filter screen of the probe is easy to block, so that the monitoring reaction speed is slow, even the monitoring reaction speed is out of order. And when the flue is easy to coke, coke blocks can fall off to damage the probe. When the coke is cleaned or the filter screen of the probe is cleaned, the probe needs to be pulled out and cleaned and then is installed again. At this time, the high temperature probe suddenly encounters cold air, and the ceramic probe is easily cracked and damaged. Therefore, the plug-in oxygen analyzer is only suitable for environments with good working conditions.

The extraction type oxygen analyzer utilizes devices such as a jet pump or a diaphragm pump to generate negative pressure, and smoke is extracted to flow through a detection pool arranged outside a flue. The probe does not need to be inserted into the flue, so that the risk of being damaged by smashing is avoided. Instruments without a back-flushing function, the filter of the sampling line needs to be manually cleaned or replaced. The existing instrument with the back flushing function regularly uses compressed air to back flush the sampling tube, and the back flushing effect is poor under severe working conditions such as coking.

The boiler flue for hazardous waste incineration is a severe working condition of high corrosion, high dust and easy coking, so the application effect of the oxygen analyzer in the type is not ideal.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To prior art's not enough, the utility model provides a can use under complicated operating mode such as useless boiler outlet of danger, can long-term operation under the operating mode condition of dustiness, easy coking, the frequent extraction formula oxygen content analysis mechanism of taking pulse blowback of online clearance maintenance has also been reduced simultaneously.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: including the sampling probe, be used for the analysis unit of flue gas oxygen content detection, have demonstration and transmission function's changer, air jet pump and gas holder, analysis unit and the inside intercommunication of sampling probe, be provided with the sampling valve between sampling probe and the analysis unit, the output and the inside intercommunication of sampling probe of gas holder, install the blowback valve between gas holder and the sampling probe, the built-in zirconia oxygen analysis probe of analysis unit, zirconia oxygen analysis probe is connected with the changer electricity, air jet pump's input and analysis unit's output intercommunication.

Preferably, the device further comprises a standard gas tank, an output end of the standard gas tank is communicated with an input end of the analysis unit, and a zero calibration valve is installed at an output end of the standard gas tank.

Preferably, a float flowmeter is arranged between the air jet pump and the analysis unit.

Preferably, the sampling probe is fixedly provided with a mounting flange.

Preferably, the input end of the sampling probe is provided with a filter.

Preferably, the device also comprises an air source pipe for providing an air source for the air storage tank, the air jet pump, the back flushing valve and the sampling valve; more specifically, the blowback valve and the sampling valve are both pneumatic ball valves.

(III) advantageous effects

Compared with the prior art, the utility model provides a take extraction formula oxygen content analysis mechanism of pulse blowback possesses following beneficial effect: the extraction type oxygen content analysis mechanism with pulse back flushing is characterized in that a sampling probe is arranged on a flue to be sampled, an air jet pump is communicated with an external pressure air source, when oxygen content in smoke is detected, a back flushing valve is closed, a sampling valve is opened, negative pressure is generated inside the air jet pump under the action of the pressure air source, the smoke enters an analysis unit through the sampling probe under the action of the negative pressure, a zirconia oxygen analysis probe in the analysis unit detects oxygen content in the smoke, data is transmitted to variable gas delivery and displayed, detected data is read, when the sampling probe meets severe working conditions such as coking, the sampling valve is closed, the back flushing valve is opened, compressed air in an air storage tank enters the sampling probe, back flushing of the sampling probe is achieved, the extraction type oxygen content analysis mechanism can be used under complex working conditions such as a hazardous waste boiler outlet and the like, the extraction type oxygen content analysis mechanism can operate under dustiness and coking working conditions such as long-time and easy to clean and maintain on line.

Drawings

FIG. 1 is a schematic diagram of the principle structure of the present invention;

in the drawings, the reference numbers: 1. sampling probe tube; 2. an analysis unit; 3. a transmitter; 4. an air jet pump; 5. a gas storage tank; 6. a sampling valve; 7. a blowback valve; 8. a zirconia oxygen analysis probe; 9. marking a gas tank; 10. a zero calibration valve; 11. a float flow meter; 12. installing a flange; 13. a filter; 14. and a gas source pipe.

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.

Please refer to fig. 1, the utility model discloses a take extraction formula oxygen content analysis mechanism of pulse blowback, including sampling probe 1, an analysis unit 2 for flue gas oxygen content detection, transmitter 3 with demonstration and transmission function, air jet pump 4 and gas holder 5, analysis unit 2 and the inside intercommunication of sampling probe 1, be provided with sampling valve 6 between sampling probe 1 and the analysis unit 2, the output and the inside intercommunication of sampling probe 1 of gas holder 5, install blowback valve 7 between gas holder 5 and the sampling probe 1, analysis unit 2 embeds zirconia oxygen analysis probe 8, zirconia oxygen analysis probe 8 is connected with transmitter 3 electricity, the input of air jet pump 4 and analysis unit 2's output intercommunication.

Specifically, the device also comprises a standard gas tank 9, wherein the output end of the standard gas tank 9 is communicated with the input end of the analysis unit 2, and a zero calibration valve 10 is installed at the output end of the standard gas tank 9; before detection, the zero calibration valve 10 can be opened, the back flushing valve 7 and the sampling valve 6 can be closed, standard gas in the standard gas tank 9 can enter the analysis unit 2, relevant data can be read through the transmitter 3, and the analysis unit 2 can be calibrated to ensure the detection accuracy of the smoke content in subsequent smoke.

Specifically, a float flowmeter 11 is arranged between the air jet pump 4 and the analysis unit 2; the float flowmeter 11 can be used to monitor whether the sampled flow is adequate or not, so as to obtain more accurate raw data.

Specifically, a mounting flange 12 is fixedly mounted on the sampling probe 1; the mounting flange 12 is fixedly connected with the embedded flange of the external flue through bolts, so that the convenience of device mounting and subsequent overhaul and maintenance is improved.

Specifically, the input end of the sampling probe 1 is provided with a filter 13; through filter 13, can prevent that particulate matter in the flue gas etc. from entering into to sampling probe 1, avoid the particulate matter in the flue gas excessively to get into and block up sampling probe 1, prevent that it from causing the influence to the normal detection of analytical element 2.

Specifically, the device also comprises an air source pipe 14 for providing an air source for the air storage tank 5, the air jet pump 4, the blowback valve 7 and the sampling valve 6; more specifically, the back-flushing valve 7 and the sampling valve 6 are pneumatic ball valves; the air source with pressure can be increased for the air storage tank 5 through the air source pipe 14, a negative pressure driving source is provided for the air jet pump 4, and the back flushing valve 7 and the sampling valve 6 can realize automatic opening and closing control through the air source with pressure of the air source pipe 14, realize automatic management and reduce manual operation amount.

When the device is used, a control line and a valve position feedback line of the sampling valve 6 and the back flushing valve 7 and a power line and a signal line of zirconia are required to be connected to an external DCS. The air source is respectively connected with the back flushing valve 7, the sampling valve 6, the air jet pump 4 and the air storage tank 5 through an air source pipe 14, the program in the external DCS system is set to independently control the program of the sampling valve 6 and the back flushing valve 7, the back flushing action and the sampling action are interlocked, and the two valves cannot be opened simultaneously. And displaying a back flushing state during back flushing and keeping a numerical value before back flushing. The frequency of back flushing required under the working condition is summarized according to the condition of the monitoring float flowmeter 11, back flushing interval time and back flushing time are set in the DCS, and then the instrument can automatically run and continuously detect the oxygen content value.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "over 8230" \8230on "," over 82308230; "over 8230;" and "over 8230; \8230; over" in the present disclosure should be interpreted in the broadest manner such that "over 8230;" over 8230 ";" not only means "directly over something", but also includes the meaning of "over something" with intervening features or layers therebetween, and "over 8230;" over 8230 ";" or "over 8230, and" over "not only includes the meaning of" over "or" over "but also may include the meaning of" over "or" over "with no intervening features or layers therebetween (i.e., directly over something).

Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The utility model provides a take extraction formula oxygen content analysis mechanism of pulse blowback, its characterized in that, including sampling probe tube (1), the analysis unit (2) that is used for flue gas oxygen content to detect, changer (3), air jet pump (4) and gas holder (5) that have demonstration and transmission function, analysis unit (2) and sampling probe tube (1) inside intercommunication, be provided with sampling valve (6) between sampling probe tube (1) and analysis unit (2), the output and the sampling probe tube (1) inside intercommunication of gas holder (5), install blowback valve (7) between gas holder (5) and sampling probe tube (1), analysis unit (2) built-in zirconia oxygen analysis probe (8), zirconia oxygen analysis probe (8) are connected with changer (3) electricity, the input of air jet pump (4) and the output intercommunication of analysis unit (2).

2. The extraction type oxygen content analysis mechanism with the pulse back flushing function as claimed in claim 1, further comprising a standard gas tank (9), wherein an output end of the standard gas tank (9) is communicated with an input end of the analysis unit (2), and a zero calibration valve (10) is installed at an output end of the standard gas tank (9).

3. The extraction-type oxygen content analysis mechanism with back pulse blowing according to claim 2, characterized in that a float flow meter (11) is installed between the air jet pump (4) and the analysis unit (2).

4. The extraction-type oxygen content analysis mechanism with back pulse blowing function as claimed in claim 3, characterized in that the sampling probe (1) is fixedly provided with a mounting flange (12).

5. The extraction-type oxygen content analysis mechanism with back pulse blowing function as claimed in claim 4, characterized in that the input end of the sampling probe (1) is provided with a filter (13).

6. The extraction-type oxygen content analysis mechanism with pulse back-flushing function as claimed in claim 5, further comprising an air source pipe (14) for providing an air source for the air storage tank (5), the air jet pump (4), the back-flushing valve (7) and the sampling valve (6).