CN207798772U - A kind of checking box with pressure compensation - Google Patents
A kind of checking box with pressure compensation Download PDFInfo
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- CN207798772U CN207798772U CN201721565234.6U CN201721565234U CN207798772U CN 207798772 U CN207798772 U CN 207798772U CN 201721565234 U CN201721565234 U CN 201721565234U CN 207798772 U CN207798772 U CN 207798772U
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- pressure
- gas
- checking box
- ball valve
- air
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- Measuring Oxygen Concentration In Cells (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model is related to a kind of checking boxes with pressure compensation, include the pressure compensator M1 connected by gas circuit and daily check system, daily check system includes filter pressure relief valve FRV1, three-way ball valve BV1, flowmeter FM1, pressure compensator M1 is equipped with 3 gas interfaces, it is gas source interface, input interface and output interface respectively, by filter pressure relief valve FRV1, ball valve V2 air source, the operating pressure of pressure about 1.4MPa are provided for the checking box with pressure compensation；Pressure from measured gas is given to input interface by ball valve V1, and the air that pressure is equal to the pressure of the tested gas inputted is obtained in output interface.By designing a gas circuit, it can realize that dynamic tracks the pressure for being tested gas, ensure that the air pressure at reference end is consistently equal to tested gas pressure, it can realize that zirconium oxide is with pressure and be mounted directly detection, save cost, and system structure is simplified, and refinery, alkylbenzene factory etc. can be generally applicable to.
Description
Technical field
The utility model is related to zirconium oxide oxygen analysis technical fields, more specifically to a kind of band pressure compensation
Checking box.
Background technology
For numerous industrial process, accurate oxygen measurement is very crucial.This can be the pure of industrial gasses
Degree detection can be the anti-leak monitoring of glove box, can also be the control to the best combustion efficiency of fuel gas.In view of not
Demand with application often has very greatly, and major producer can provide a variety of analyzers to ensure that user can always select most suitable skill
Art scheme.
Zirconium oxide analyzer is mainly used in：Inert gas reacting furnace or container, argon gas or nitrogen purification, boiler are burnt
The gas cylinder of the Combustion System, Gas Plant that burn stove etc. is filled and the carbon dioxide of canned warship inert gas generator, beer industry
Purity detecting, heat treatment industrial furnace etc..
The use condition of Zirconium oxide analyzer detector has pressure requirements, according to nernst equation, general pressure
Will be within the scope of ± 3KPa, this is to meet on the flue of convention furnace.But drawing recently as external technique packet
Into many stove appearance+10KPa or more.When especially zirconia oxygen analyzer is used to detect oxygen content in pressure piping gas,
Pressure reaches nearly 100KPa.In this case, conventional method is all the method for taking analysis system, and changing zirconium oxide can be with
The advantages of being inserted directly into installation is assigned zirconia oxygen analyzer as general analysis instrument, is attached in cabinet；Come for pipeline
High pressure gas carries out sampling pretreatment, that is, is depressured and enters after removing water Zirconium oxide analyzer probe detection.Although this method can
To solve the problems, such as, but caused by negative effect be that system is huge, client cost increases, and the competitiveness of supplier declines.
Therefore, the prior art is urgently greatly improved.
Utility model content
The technical problem to be solved by the present invention is to for the above-mentioned defect of the prior art, provide a kind of with pressure
The checking box of force compensating function includes the pressure compensator M1 connected by gas circuit and daily check system, the daily verification
System includes filter pressure relief valve FRV1, three-way ball valve BV1, flowmeter FM1, and the pressure compensator M1 connects equipped with 3 gases
Mouthful, it is gas source interface, input interface and output interface respectively, is the band pressure by filter pressure relief valve FRV1, ball valve V2
The checking box of compensation function provides air source, the operating pressure of pressure about 1.4MPa；Pressure from measured gas passes through ball valve
V1 is given to input interface, the air that pressure is equal to the pressure of the tested gas inputted is obtained in output interface, by pipeline this
The air of pressure is passed through the reference end of probe, then so that reference end and measurement end pressure reach dynamically flat inside and outside probe zirconium pipe
Weighing apparatus realizes normal measure to reach the use differential pressure condition of probe.
Further include zirconia oxygen analyzer in the checking box described in the utility model with pressure compensation.
In the checking box described in the utility model with pressure compensation, the zirconia oxygen analyzer includes passing through
Dust guard, tubular zirconium-oxide element, thermocouple, heater, calibration gas conduit, terminal box and the shell shell of gas circuit connection
Body.
In the checking box described in the utility model with pressure compensation, the checking box uses Totally-enclosed-type knot
Structure.
The checking box with pressure compensation for implementing the utility model, has the advantages that：By designing one
Gas circuit can realize that dynamic tracks the pressure for being tested gas, ensure that the air pressure at reference end is consistently equal to tested gas pressure,
It can realize that zirconium oxide is with pressure and be mounted directly detection, save cost, and system structure is simplified, and petrochemical refining can be generally applicable to
Factory, alkylbenzene factory etc..
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is zirconium oxide analysis cabinet fundamental diagram.
Fig. 2 is the gas circuit structure figure of checking box of the utility model with pressure compensation.
Specific implementation mode
Referring to Fig. 1, analyzing cabinet fundamental diagram for zirconium oxide.Zirconium oxide working principle and characteristic：Zirconia ceramics is
A kind of solid dielectric, it has ionic conductivity, is the key that oxygen concentration of flue gas is converted into electric signal in measuring device
Element.At a certain temperature, the gas of oxygen concentration, such as inside blowing air are passed to inside and outside zirconium oxide measurement pipe, as ginseng
Than gas, outside then by being tested flue gas.Inside and outside when the oxygen concentration difference of gas, it will be generated inside and outside zirconium oxide test tube
Difference in oxygen concentration potential, inside porosity platinum reference potential are anode, and outside porosity platinum electrode is cathode.Two leads are dense by oxygen
Poor potential send to secondary meter and is amplified display, also can be exchanged into standard signal as other controls.
The critical piece of zirconia oxygen analyzer：Zirconia oxygen analyzer is by dust guard, tubular zirconium-oxide element (solid electrolytic
Matter element), thermocouple, heater, calibration gas conduit, the critical pieces composition such as terminal box and case body.Whole device
Using Totally-enclosed-type structure, to increase the sealing performance of whole device.Material is using high temperature resistant, corrosion resistant stainless steel material system
Make, the longevity is used to improve.
Dust guard is made of dust cover and filter, can be prevented the dust in flue gas from entering inside zirconium oxide zirconium pipe, be made
Zirconium tube elements can play the role of buffering gas sample from pollution.Tubular zirconium-oxide element is the core component of oxygen probe, is produced by it
Raw oxygen concentration potential signal.Tubular zirconium-oxide element is pottery metal oxide, and when use must avoid strenuous vibration, in order to avoid damage
Bad zirconium tube elements.Thermocouple is used to measure the temperature of tested gas and heater thermostatic control in boiler, furnace flue.Add
The effect of hot device is to provide the temperature needed for zirconia solid electrolyte element normal work, to make it less than 600 DEG C
It is worked normally in tested flue gas environment.
Conventional is all to analyze cabinet Fig. 1 shows the zirconium oxide of structure using similar under high-pressure situations, by ball valve in Fig. 1
BV1, pressure reducing valve FRV1, needle valve V1, flowmeter FM1, measuring cell, drain pipe BV4, which are constituted, to be tested the decompression of high pressure gas, surveys
Amount and discharge, the pressure of gas is actually tested by reduction, reaches the interior external pressure that zirconia oxygen analyzer can be approved
Difference measures again.Ball valve BV2, BV3, pressure reducing valve FRV2 and flowmeter FM1 constitute the daily verification system of analyzer in figure
System.
Referring to Fig. 2, for the gas circuit structure figure of checking box of the utility model with pressure compensation.As shown in Fig. 2, mistake
What filter pressure reducing valve FRV1, three-way ball valve BV1, flowmeter FM1 were constituted is daily check system, is analyzed in cabinet with regular oxidation zirconium
Check part function it is identical；Pressure compensator M1 in Fig. 2 is pressure compensated Primary Component, it is really a pneumatic instrument
Table is pneumatic amplifier, it has 3 gas interfaces, is air source, input, output respectively.We are subtracted by filter in use
Pressure valve FRV1, ball valve V2 provide air source, the operating pressure of pressure about 1.4MPa for it；Pressure from measured gas is to pass through
Ball valve V1 is given to input terminal, we can obtain the pressure that pressure is equal to the tested gas of input in the output end of the instrument in this way
Air, the air of the pressure is passed through by pipeline the reference end of probe, thereby realize probe zirconium pipe inside and outside (ginseng
Than end and measurement end) pressure reaches dynamic equilibrium, to reach the use differential pressure condition of probe, realize normal measure.
The utility model can be accomplished, by designing a gas circuit, can realize dynamic by the design of above example
Tracking is tested the pressure of gas, ensures that the air pressure at reference end is consistently equal to tested gas pressure, can realize zirconium oxide band
Pressure is mounted directly detection, saves cost, and system structure is simplified, and refinery, alkylbenzene factory etc. can be generally applicable to.
The utility model is described according to specific embodiment, but it will be understood by those skilled in the art that not departing from
When the scope of the utility model, various change and equivalent replacement can be carried out.In addition, to adapt to the specific field of the utility model technology
It closes, many modifications can be carried out to the utility model without departing from its protection domain.Therefore, the utility model is not limited to public herein
The specific embodiment opened, and include all embodiments for dropping into claims.
Claims (4)
1. a kind of checking box with pressure compensation, which is characterized in that include the pressure compensator M1 connected by gas circuit and
Daily check system, the daily check system include filter pressure relief valve FRV1, three-way ball valve BV1, flowmeter FM1, described
Pressure compensator M1 is equipped with 3 gas interfaces, is gas source interface, input interface and output interface respectively, is depressurized by filter
Valve FRV1, ball valve V2 provide air source, the operating pressure of pressure about 1.4MPa for the checking box with pressure compensation；It comes from
The pressure for being measured gas is given to input interface by ball valve V1, and obtaining pressure in output interface is equal to the tested gas inputted
The air of pressure is passed through the air of the pressure by pipeline at the reference end of probe, then makes reference inside and outside probe zirconium pipe
End and measurement end pressure reach dynamic equilibrium, to reach the use differential pressure condition of probe, realize normal measure.
2. the checking box according to claim 1 with pressure compensation, which is characterized in that further include zirconium oxide oxygen amount
Meter.
3. the checking box according to claim 2 with pressure compensation, which is characterized in that the zirconia oxygen analyzer
Include the dust guard connected by gas circuit, tubular zirconium-oxide element, thermocouple, heater, calibration gas conduit, terminal box and
Case body.
4. the checking box with pressure compensation according to claims 1 to 3 any one, which is characterized in that described
Checking box uses Totally-enclosed-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721565234.6U CN207798772U (en) | 2017-11-21 | 2017-11-21 | A kind of checking box with pressure compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721565234.6U CN207798772U (en) | 2017-11-21 | 2017-11-21 | A kind of checking box with pressure compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798772U true CN207798772U (en) | 2018-08-31 |
Family
ID=63285811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721565234.6U Active CN207798772U (en) | 2017-11-21 | 2017-11-21 | A kind of checking box with pressure compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798772U (en) |
-
2017
- 2017-11-21 CN CN201721565234.6U patent/CN207798772U/en active Active
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