CN214503445U

CN214503445U - Zirconia oxygen content analyzer

Info

Publication number: CN214503445U
Application number: CN202120507700.5U
Authority: CN
Inventors: 张朝庭
Original assignee: Wuxi Chaoda Electronic Technology Co ltd
Current assignee: Wuxi Chaoda Electronic Technology Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-26
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a zirconia oxygen analyzer relates to oxygen content testing apparatus field, including the analysis appearance body and rather than electric connection's probe, the probe includes the gauge tube, the gauge tube includes that parent tube and one end setting just can follow parent tube axial motion sleeve pipe in the parent tube, the sleeve pipe is sealed with the parent tube junction, set up heating furnace and zirconia sensor in the parent tube, the periphery of parent tube sets up flange, the left end of parent tube sets up the terminal box, sheathed tube right-hand member sets up rather than dismantling sealing connection's smoke and dust filter tube, smoke and dust filter tube's right-hand member sets up rather than dismantling sealing connection's drying tube, set up porous ceramic filter and the drying box that is used for absorbing vapor in smoke and dust filter tube and the drying tube respectively, set up the drier in the drying box. The utility model discloses can solve among the prior art zirconia oxygen analyzer survey the lower problem that becomes invalid even of the degree of accuracy easily influenced of the lower and zirconia sensor of suitability of pipe length.

Description

Zirconia oxygen content analyzer

Technical Field

The utility model belongs to the technical field of oxygen content testing device and specifically relates to a zirconia oxygen analyzer.

Background

Zirconia is a ceramic, a solid with ion conducting properties. The crystal is monoclinic crystal at normal temperature, when the temperature is increased to 1150 ℃, the crystal form is converted into cubic crystal, and meanwhile, the volume shrinkage is about 7 percent; when the temperature is lowered, it becomes monoclinic crystal again. If heating and cooling are repeated, the zirconia is cracked. Therefore, pure zirconia cannot be used as a measuring element. If a certain amount of calcium oxide or yttrium oxide is added into zirconia as a stabilizer and then the zirconia is roasted at high temperature to become a stabilized zirconia material, at this time, tetravalent zirconium is replaced by divalent calcium or trivalent yttrium, and oxygen ion holes are generated, so that the zirconia belongs to an anion solid electrolyte. Zirconia conducts electricity mainly by the movement of holes, and when the temperature reaches over 600 ℃, it becomes a good oxygen ion conductor. When the oxygen partial pressures on both sides of zirconia are different, oxygen on the side with a high oxygen partial pressure migrates in the form of ions to the side with a low oxygen partial pressure, so that the platinum electrode on the side with a high oxygen partial pressure loses electrons and becomes positively charged, and the platinum electrode on the side with a low oxygen partial pressure gains electrons and becomes negatively charged, thereby generating an oxygen concentration potential between the two platinum electrodes. This potential is only related to the difference in oxygen content (oxygen concentration difference) in the gases on both sides at a certain temperature. If the oxygen content of one side is known (for example, the oxygen content in the air is constant), the oxygen content of the other side (for example, the oxygen content in the flue gas) can be represented by an oxygen concentration potential, and the oxygen concentration potential is measured, so that the oxygen content in the flue gas can be known.

The zirconium oxide oxygen analyzer has the advantages of simple structure and sampling pretreatment system, high sensitivity and resolution, wide measurement range, high response speed and the like.

The existing zirconia oxygen analyzer comprises an analyzer body and a probe, wherein the probe comprises a probe tube, a heating furnace and a zirconia sensor are arranged in the probe tube, a connecting flange is arranged at the periphery of the probe tube, and a junction box is arranged at the left end of the probe tube. In order to ensure the accuracy of the measurement of the oxygen amount, the length of the probe tube is required to be between one third and two thirds of the diameter of the detected furnace channel or flue, and the probe cannot be arranged at the bottom of the furnace channel or flue.

The existing zirconia oxygen analyzer has the following defects:

1. the length of the probe tube of the probe is a fixed value, the probe tube cannot be adapted to various furnace channels or flues with different diameters, and when the probe is installed in the furnace channels or flues which are not adapted to the furnace channels or flues, the accuracy of the oxygen concentration value measured by the analyzer is low.

2. The flue gas in the flue or the flue is contacted with the zirconia sensor through the detecting tube. The smoke contains a large amount of smoke dust, and the accuracy of zirconia sensor can be influenced to the smoke dust and contact with zirconia sensor, leads to zirconia sensor inefficacy even.

3. When a newly-built furnace flue or flue is not dried, the flue gas in the furnace flue or flue contains a large amount of water vapor and is too humid, and the excessively humid flue gas can seriously corrode the zirconia sensor, so that the accuracy of the zirconia sensor is reduced and even the zirconia sensor fails.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a zirconia oxygen analyzer is provided, solve among the prior art zirconia oxygen analyzer survey the lower problem that becomes invalid even with zirconia sensor's the degree of accuracy easily influenced of the suitability of pipe length.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a zirconia oxygen analyzer, includes the analysis appearance body and rather than electric connection's probe, the probe includes the gauge tube, the gauge tube includes that parent tube and one end setting just can follow parent tube axial motion sleeve pipe in the parent tube, the sleeve pipe is sealed with the parent tube junction, set up heating furnace and zirconia sensor in the parent tube, the periphery of parent tube sets up flange, the left end of parent tube sets up the terminal box, sheathed tube right-hand member sets up rather than dismantling sealing connection's smoke and dust filter tube, the right-hand member of smoke and dust filter tube sets up rather than dismantling sealing connection's drying tube, set up porous ceramic filter and the drying box that is used for absorbing vapor in smoke and dust filter tube and the drying tube respectively, set up the drier in the drying box.

Furthermore, the left end of the smoke dust filter pipe is detachably connected with the sleeve in a sealing mode through threads.

Furthermore, the left end of the drying pipe is detachably connected with the smoke filtering pipe in a sealing mode through threads.

Further, the drying agent in the drying box is an alumina drying agent.

Furthermore, the drying agent in the drying box is an activated alumina drying agent.

Further, the parent tube and sleeve pipe sliding connection, the internal surface of parent tube sets up two at least bar spouts along parent tube axis direction symmetry, the right-hand member of spout sets up the end shrouding that is used for sealing the spout, sheathed tube left end periphery sets up the slider that matches with the spout, slider and spout sliding connection.

Furthermore, the number of the chutes is four and the chutes are arranged in an annular array by taking the axis of the base pipe as a symmetric center.

Further, the inner surface of the right end of the base pipe is provided with a sealing ring for sealing.

Further, the sheathed tube left part surface sets up the external screw thread, parent tube right part internal surface sets up the internal thread that matches with the external screw thread, the parent tube passes through external screw thread and internal thread with the sleeve pipe and can dismantle sealing connection.

The utility model discloses following beneficial effect has:

the utility model discloses a zirconia oxygen analyzer's detecting tube includes that parent tube and one end setting just can follow parent tube axial motion sleeve pipe in the parent tube, and the sleeve pipe is sealed with the parent tube junction, and when the probe installation was in the flue or the flue of different diameters, installation staff adjusted the total length of detecting tube in order to accomplish the adaptation of zirconia oxygen analyzer and flue or flue through the length that adjusting sleeve pipe right-hand member stretched out, guaranteed the degree of accuracy that the oxygen concentration was measured to the analyzer.

The utility model discloses a zirconia oxygen analyzer sets up rather than can dismantling sealing connection's smoke and dust filter tube at the sheathed tube right-hand member, and the smoke and dust in the smoke and dust filter tube can filter the flue gas, avoids smoke and dust and zirconia sensor contact to influence the degree of accuracy of zirconia sensor. The smoke and dust filter tube can be dismantled sealing connection with the sleeve pipe, and when the porous ceramic filter in the smoke and dust filter tube absorbed smoke and dust and reached saturation, the maintenance staff can pull down the smoke and dust filter tube and maintain or change.

The utility model discloses a zirconia oxygen analyzer sets up rather than the drying tube that can dismantle sealing connection at the right-hand member of smoke and dust filter tube, and the drying tube can absorb the big vapor that the flue gas contains, avoids vapor corrosion zirconia sensor. The drying tube is detachably and hermetically connected with the smoke dust filtering tube, so that maintenance staff can maintain or replace the drying tube conveniently.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a front view of a soot filter tube;

FIG. 3 is a front view of a drying duct;

FIG. 4 is a cross-sectional view along AA in FIG. 1 in example 1;

FIG. 5 is a right side view of the base pipe of example 1;

FIG. 6 is a left side view of the socket according to example 1;

FIG. 7 is a front view of the socket according to example 1;

fig. 8 is a front view of the sleeve of example 2.

Detailed Description

Example 1:

as shown in fig. 1-7, a zirconia oxygen analyzer comprises an analyzer body 1 and a probe 2 electrically connected with the analyzer body, the probe 2 comprises a probe tube 21, the probe tube 21 comprises a base tube 211 and a sleeve 212, one end of the sleeve is arranged in the base tube 211 and can move axially along the base tube 211, the joint of the sleeve 212 and the base pipe 211 is sealed, a heating furnace 24 and a zirconia sensor 25 are arranged in the base pipe 211, a connecting flange 22 is arranged on the periphery of the base pipe 211, the left end of the base pipe 211 is provided with a junction box 23, the right end of the sleeve 212 is provided with a smoke filter pipe 26 which is detachably and hermetically connected with the sleeve, the right end of the smoke filtering pipe 26 is provided with a drying pipe 27 which is detachably and hermetically connected with the smoke filtering pipe 26, the smoke filtering pipe 26 and the drying pipe 27 are respectively provided with a porous ceramic filter 261 and a drying box 271 for absorbing water vapor, and a drying agent is arranged in the drying box 271.

The left end of the smoke filter pipe 26 is detachably connected with the sleeve 212 in a sealing mode through threads.

The left end of the drying pipe 27 is detachably connected with the smoke filtering pipe 26 in a sealing way through threads.

A threaded connection is a preferred form of releasable sealing connection.

The drying agent in the drying box 271 is alumina drying agent.

The alumina desiccant can be used at high temperatures.

The desiccant in the drying box 271 is activated alumina desiccant.

The active alumina drying agent is one of alumina drying agents with better drying effect.

The base pipe 211 is slidably connected with a sleeve 212, at least two strip-shaped sliding grooves 2111 are symmetrically arranged on the inner surface of the base pipe 211 along the axial direction of the base pipe 211, an end sealing plate 2112 for sealing the sliding grooves 2111 is arranged at the right end of the sliding grooves 2111, a sliding block 2121 matched with the sliding grooves 2111 is arranged on the periphery of the left end of the sleeve 212, and the sliding block 2121 is slidably connected with the sliding grooves 2111.

The overall length of the probe tube can be varied by sliding the sleeve 212.

The number of the sliding grooves 2111 is four, and the sliding grooves are arranged in an annular array by taking the axis of the base pipe 211 as a symmetric center.

The four sliding grooves ensure the stability of sliding.

The inner surface of the right end of the base pipe 211 is provided with a sealing ring 2113 for sealing.

The seal ring 2113 further ensures the tightness of the connection of the base pipe 211 with the sleeve 212.

Example 2:

as shown in fig. 1 to 4 and fig. 8, a zirconia oxygen analyzer comprises an analyzer body 1 and a probe 2 electrically connected thereto, the probe 2 comprises a probe tube 21, the probe tube 21 comprises a base tube 211 and a sleeve 212, one end of the sleeve is arranged in the base tube 211 and can move axially along the base tube 211, the joint of the sleeve 212 and the base pipe 211 is sealed, a heating furnace 24 and a zirconia sensor 25 are arranged in the base pipe 211, a connecting flange 22 is arranged on the periphery of the base pipe 211, the left end of the base pipe 211 is provided with a junction box 23, the right end of the sleeve 212 is provided with a smoke filter pipe 26 which is detachably and hermetically connected with the sleeve, the right end of the smoke filtering pipe 26 is provided with a drying pipe 27 which is detachably and hermetically connected with the smoke filtering pipe 26, the smoke filtering pipe 26 and the drying pipe 27 are respectively provided with a porous ceramic filter 261 and a drying box 271 for absorbing water vapor, and a drying agent is arranged in the drying box 271.

The drying agent in the drying box 271 is alumina drying agent.

The desiccant in the drying box 271 is activated alumina desiccant.

The outer surface of the left part of the sleeve 212 is provided with an external thread 2122, the inner surface of the right part of the base pipe 211 is provided with an internal thread matched with the external thread 2122, and the base pipe 211 and the sleeve 212 are detachably connected in a sealing manner through the external thread 2122 and the internal thread.

The overall length of the probe tube can be changed by rotating the sleeve 212.

After the sleeve 212 is rotated to change the total length of the probe tube, a raw rubber belt can be wound outside the joint of the sleeve and the base tube, so that the connection tightness of the sleeve and the base tube is further ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes without departing from the technical scope of the present invention, but all those persons do not depart from the technical spirit of the present invention, and any simple modifications, equivalent replacements, and improvements made to the above embodiments are within the spirit and principle of the present invention, and still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a zirconia oxygen analyzer, includes analysis appearance body (1) and rather than electric connection's probe (2), probe (2) are including detecting tube (21), its characterized in that, detecting tube (21) include parent tube (211) and one end setting in parent tube (211) and can follow parent tube (211) axial motion sleeve pipe (212), sleeve pipe (212) are sealed with parent tube (211) junction, set up heating furnace (24) and zirconia sensor (25) in parent tube (211), the periphery of parent tube (211) sets up flange (22), the left end of parent tube (211) sets up terminal box (23), the right-hand member of sleeve pipe (212) sets up rather than dismantling sealing connection's smoke and dust filter tube (26), the right-hand member setting of smoke and dust filter tube (26) rather than dismantling sealing connection's drying tube (27), smoke and dust filter tube (26) and drying tube (27) are interior set up porous ceramic filter (261) respectively and are used for absorbing porous ceramic filter (261) and are used for absorbing A drying box (271) of water vapor, wherein a drying agent is arranged in the drying box (271).

2. The zirconia oxygen analyzer of claim 1, wherein said soot filter tube (26) is removably and sealingly attached at its left end to said sleeve (212) by threading.

3. The zirconia oxygen analyzer of claim 1, wherein said drying tube (27) is removably and sealingly connected at its left end to said soot filter tube (26) by a screw thread.

4. The zirconia oxygen analyzer of claim 1, wherein the desiccant in said drying box (271) is alumina desiccant.

5. The zirconia oxygen analyzer of claim 4, wherein said desiccant in said drying box (271) is an activated alumina desiccant.

6. The zirconia oxygen analyzer of claim 1, wherein the base tube (211) is slidably connected to a sleeve (212), the inner surface of the base tube (211) is symmetrically provided with at least two strip-shaped sliding grooves (2111) along the axial direction of the base tube (211), the right end of each sliding groove (2111) is provided with an end sealing plate (2112) for sealing the sliding groove (2111), the periphery of the left end of the sleeve (212) is provided with a sliding block (2121) matched with the sliding groove (2111), and the sliding block (2121) is slidably connected to the sliding groove (2111).

7. The zirconia oxygen analyzer of claim 6, wherein said chutes (2111) are four in number and arranged in an annular array with the axis of the substrate tube (211) as the center of symmetry.

8. A zirconia oxygen analyzer according to claim 7, wherein the inner surface of the right end of said base pipe (211) is provided with a seal ring (2113) for sealing.

9. A zirconia oxygen analyzer according to claim 1, wherein the sleeve (212) has an external thread (2122) on its left outer surface and the base tube (211) has an internal thread on its right inner surface matching the external thread (2122), and the base tube (211) and the sleeve (212) are detachably and sealingly connected by the external thread (2122) and the internal thread.