CN206074531U - A kind of nitrogen content testing equipment with multistage purification mechanism - Google Patents

Abstract

The utility model discloses a kind of nitrogen content testing equipment with multistage purification mechanism, including：Sample introduction processing meanss；Burner, for the burning of testing sample, and produces mixed gas；Reduction apparatus, the reduction apparatus are connected with the burner so that the mixed gas are reduced in the reduction apparatus；Purifier, the purifier are connected with the reduction apparatus, to purify to the mixed gas after reduction；Detection means, the detection means are connected with the purifier, to detect to the nitrogen content in purified gas.The utility model solves used in prior art the technological deficiencies such as corrosivity soda acid, operating procedure are complicated, time-consuming and environmental pollution is serious.

Description

A kind of nitrogen content testing equipment with multistage purification mechanism

Technical field

The utility model belongs to detection technique field, and more particularly to a kind of detection of the nitrogen content with multistage purification mechanism sets It is standby.

Background technology

The measure of full nitrogen/protein content is widely used in dairy products, food, animal feed, cereal, fertilizer, tobacco, plant The detection of the products such as thing, traditional detection means are Kjeldahl's method, it as industrial standard executed for many years, but using corrosion Property soda acid, operating procedure is complicated, time-consuming and environmental pollution is seriously difficult to meet the needs for detecting development now.Specifically, It is, under conditions of having catalyst, organic nitrogen to be all transformed into inorganic ammonium salt with concentrated sulfuric acid sample digestion, then in alkaline bar Ammonium salt is converted into into ammonia under part, is distillated with vapor and is absorbed for excessive acid solution, then with standard acidometric titration, so as to calculate sample Nitrogen content in product, that is, predominantly detect process to clear up → distilling → titrate.Clear up and be mainly manually with titration process, Process is tired to be taken again, requires that the possibility that higher and error is produced is larger to operating personnel.Importantly, in digestion process Strong acid need to be used, very big hidden danger be there is also to the safety of operating personnel, and time-consuming, workload big, makes detection efficiency relatively low, The needs of coherent detection unit far can not be met.

Utility model content

The utility model provides a kind of nitrogen content testing equipment with multistage purification mechanism, solves or part solves The technological deficiency such as corrosivity soda acid, operating procedure are complicated used in prior art, time-consuming and environmental pollution is serious.

According to one side of the present utility model, there is provided a kind of nitrogen content testing equipment with multistage purification mechanism, Including：Burner, for the burning of testing sample, and produces mixed gas；De-watering apparatus, the de-watering apparatus and the combustion Device connection is burnt, for removing the moisture in the mixed gas produced after burner burning；Wherein, the eliminating water Device includes：One-level water removal body；Reduction apparatus, the reduction apparatus are connected with the third class de-watering mechanism so that from described Third class de-watering mechanism out after mixed gas be reduced in the reduction apparatus；Purifier, the purifier and institute Reduction apparatus connection is stated, to purify to the mixed gas after reduction；Wherein, the purifier includes：First class purification machine Structure；Secondary purification mechanism；The first class purification mechanism and the secondary purification mechanism are in parallel, and the one end after parallel connection with it is described Reduction apparatus connect, with the mixed gas produced after receiving the reduction apparatus burning；Three-level purification mechanism, the three-level purification Mechanism is connected with the other end of the first class purification mechanism and the secondary purification mechanism after parallel connection so that the three-level purification Mechanism is in series with the first class purification mechanism, secondary purification mechanism respectively, is passed through with being received by the three-level purification mechanism Gas after the first class purification mechanism and secondary purification mechanism purified treatment；Detection means, the detection means and institute Purifier connection is stated, to detect to the nitrogen content in purified gas；Sample introduction processing meanss, for described to be measured Sample enters the sample introduction of early stage of advancing and processes；And the burner is fitted vertically in the top of the sample introduction processing meanss, is made Must be admitted in the burner through the testing sample after the sample introduction of early stage is processed by the sample introduction processing meanss Burning.

Optionally, the burner is temperature control in 1100 DEG C of combustion furnace；And the combustion furnace includes：Body of heater, So that the testing sample burns in the furnace interior；Electron electric power device, is connected with the body of heater, for the body of heater 1100 DEG C of temperature environment is provided, so that the testing sample fully oxidized burning in the body of heater；Heating element heater, it is described to add Thermal element is uniformly arranged on the inwall of the body of heater, the temperature of the inside of the body of heater is uniformly divided in the body of heater Cloth.

Optionally, the heating element heater is associated layer made by Tercod, is attached to the inwall of the body of heater On.

Optionally, the sample introduction processing meanss also include：At least one sampler, is taken described in each in vertical direction Sample device is respectively positioned on the lower section of the burner；The crucible being adapted with the sampler quantity, each described crucible correspondence Ground is fixed on a sampler, and is placed with the testing sample at least one described crucible；Mechanical arm, is arranged There is the lever arm being adapted with the sampler quantity, correspondence fixes a sampler on each lever arm, to pass through The up and down action of the lever arm drives the corresponding sampler to move up and down, and promotes then the accordingly crucible to enter institute State in burner.

Optionally, the reduction apparatus include：Current divider, the current divider are connected with the third class de-watering mechanism, with right The mixed gas transferred out by the third class de-watering mechanism are shunted；Reduction furnace, the reduction furnace respectively with the current divider It is connected with the detection means, to reduce to the gas after shunting, and the gas after reduction is sent into into the detection means In detected.

Optionally, the first class purification mechanism includes：First absorber and the second absorber；The first absorber difference It is connected with the reduction apparatus and second absorber；And, the secondary purification mechanism includes：3rd absorber and the 4th is inhaled Adnexa；3rd absorber is connected with the reduction apparatus and the 4th absorber respectively；And, the three-level purification mechanism Including：5th absorber and the 6th absorber；5th absorber is connected with second absorber respectively, the described 4th inhales Adnexa and the 6th absorber connection, the 6th absorber are connected with the detection means.

Optionally, first absorber is sulfur dioxide/carbon dioxide halogen absorber；Second absorber is water Absorber；And/or, the 3rd absorber is sulfur dioxide/carbon dioxide halogen absorber；4th absorber is that water is inhaled Adnexa；And/or, the 5th absorber is sulfur dioxide/carbon dioxide halogen absorber；6th absorber is water absorption Device.

Optionally, the detection means includes：TCD thermal conductivity detector (TCD)s；Mass flowmenter；Wherein, the TCD Thermal Conductivities Device is connected with the purifier and the mass flowmenter respectively.

Optionally, the one-level water removal body includes：First glass physical condenser, the first electronic cooling dehydrater and One adsorbent；The first glass physical condenser is connected with the burner and the first electronic cooling dehydrater respectively Connect；First adsorbent is connected with the first electronic cooling dehydrater；First adsorbent is connected with the reduction apparatus Connect.

Optionally, the first glass physical condenser is third generation double-tee glass condenser, the first electronics system Cold dehydrater is semiconductor cooler, and first adsorbent is silica gel, activated alumina or activated carbon；And/or, described Two glass physical condensers are third generation double-tee glass condensers, and the second electronic cooling dehydrater is semiconductor refrigerating Device, second adsorbent are silica gel, activated alumina or activated carbon；And/or, the 3rd glass physical condenser is The double tee glass condensers of three generations, the 3rd electronic cooling dehydrater is semiconductor cooler, and the 3rd adsorbent is silicon Glue, activated alumina or activated carbon.

A kind of nitrogen content testing equipment with multistage purification mechanism that the utility model is provided, at least including sample introduction process Device, burner, reduction apparatus, purifier, detection means.Wherein, the sample introduction processing meanss and the burner Connection, so that sample introduction process is carried out to sample, the burner is connected with the reduction apparatus so that testing sample is in the combustion Fully burn in burning device, and produce mixed gas.Reduction apparatus are connected with purifier simultaneously so that produced gaseous mixture Body is purified through a series of control techniques in purifier.Purity nitrogen molecule is comprised only in realizing the gas after final purification, And the purifier is connected with the detection means so that the content of nitrogen in purified gas, by the detection means institute Detection.In the utility model embodiment, there is the multistage total nitrogen except water purifying function to divide by least the above device composition is described Analysis system, adopts Kjeldahl's method in instead of conventional art and caused use corrosivity soda acid, operating procedure are complicated, time-consuming The serious technological deficiency of long and environmental pollution.

Description of the drawings

In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment Needed for accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this A little accompanying drawings obtain other accompanying drawings.

The structural representation of the nitrogen content testing equipment with multistage purification mechanism that Fig. 1 is provided for the utility model embodiment Block diagram one；

The structural representation of the nitrogen content testing equipment with multistage purification mechanism that Fig. 2 is provided for the utility model embodiment Block diagram two；

The structural representation of the nitrogen content testing equipment with multistage purification mechanism that Fig. 3 is provided for the utility model embodiment Block diagram three；

Structural schematic block diagrams of the Fig. 4 for the burner in Fig. 2；

Structural schematic block diagrams of the Fig. 5 for the sampling processing meanss in Fig. 2；

Structural schematic block diagrams of the Fig. 6 for the de-watering apparatus in Fig. 2；

Structural schematic block diagrams of the Fig. 7 for the reduction apparatus in Fig. 2；

Structural schematic block diagrams of the Fig. 8 for the purifier in Fig. 2；

Structural schematic block diagrams of the Fig. 9 for the detection means in Fig. 2；

The schematic flow sheet one of the method for the measure nitrogen content that Figure 10 is provided for the another embodiment of utility model；

The schematic flow sheet two of the method for the measure nitrogen content that Figure 11 is provided for the another embodiment of utility model；

Figure 12 is the schematic flow sheet of water removal phase in Figure 11；

Figure 13 is the schematic flow sheet of purifying step in Figure 11；

Figure 14 is the schematic flow sheet of reduction step in Figure 11；

The overall knot of the nitrogen content testing equipment with multistage purification mechanism that Figure 15 is provided for the utility model embodiment Structure schematic diagram.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only the utility model a part of embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, the every other embodiment obtained by those of ordinary skill in the art all belongs to In the scope of the utility model protection；Involved "and/or" keyword wherein in this enforcement, represent and, or two kinds of situations, change Sentence is talked about, and the A and/or B mentioned by the utility model embodiment illustrates A and B, two kinds of situations of A or B, describe A and B and deposited Three kinds of states, such as A and/or B, represent：Only including A does not include B；Only including B does not include A；Including A and B.

Meanwhile, in the utility model embodiment, when component is referred to as " being fixed on " another component, it can be directly another On one component or can also there is component placed in the middle.When a component is considered as " connection " another component, it can be It is directly connected to another component or may be simultaneously present component placed in the middle.When component be considered as " being arranged at " another Component, it can be set directly on another component or may be simultaneously present component placed in the middle.The utility model embodiment Used in term " vertical ", " level ", "left", "right" and similar statement be merely for purposes of illustration, not It is intended to limit the utility model.

Fig. 1 is referred to specifically, the utility model embodiment provides a kind of detection of the nitrogen content with multistage purification mechanism Equipment, at least including burner 200, reduction apparatus 400, purifier 500 and detection means 600.Wherein, the burning dress Put 200 to be connected with the reduction apparatus 400 so that testing sample fully burns in the burner 200, and produces mixing Gas.Reduction apparatus 400 are connected with purifier 500 simultaneously so that produced mixed gas are passed through in purifier 500 A series of control techniques are purified.Comprise only purity nitrogen molecule in realizing the gas after final purification, and the purifier 500 with The detection means 600 connects so that the content of nitrogen in purified gas, is detected by the detection means.This practicality is new In type embodiment, institute is constituted by least the above burner 200, reduction apparatus 400, purifier 500 and detection means 600 The nitrogen content testing equipment with multistage purification mechanism is stated, the caused use using Kjeldahl's method in conventional art is instead of The technological deficiency that corrosivity soda acid, operating procedure are complicated, time-consuming and environmental pollution is serious.

For the nitrogen content testing equipment with multistage purification mechanism provided to the utility model embodiment

Elaborate, with reference to Fig. 2-9 respectively to burner 200, reduction apparatus 400, purifier 500 and inspection Survey device 600 to elaborate, further to support technical problem to be solved in the utility model.

For firstly, for burner 200,

As the temperature range and the Temperature Distribution in stove of burning have vital effect to test result. Therefore, the burner 200 described in the utility model embodiment is 1100 DEG C of combustion furnaces, and is uniform constant temperature.

Specifically, Fig. 4 is referred to, 1100 DEG C of combustion furnaces at least include：Body of heater 201, for automatic constant temperature temperature control Power electronic equipment 202 and heating element heater 203.Wherein, the power electronic equipment 202 is used to maintain inside body of heater 201 1100 DEG C of high temperature, to ensure testing sample fully oxidized burning in the body of heater 201, so as to eliminate due in body of heater 201 The temperature in portion is low and the oxidation of clearing up of the testing sample substantially uniformity can not be made, and cause unnecessary to test experiments dry Disturb, and then improve the degree of accuracy of test result.Meanwhile, heating element heater 203 is evenly provided on the surrounding of 201 inwall of body of heater, makes The high temperature of furnace interior is uniformly distributed, so that testing sample thermally equivalent, it is ensured that sample uniform decomposition in the combustion furnace, so as to Further obviate due to the even technological deficiency brought of the temperature distributing disproportionation inside body of heater 201.It should be noted that this enforcement Heating element heater 203 described in example can uniformly be arranged on the inwall of body of heater 201, naturally it is also possible to be arranged on the outer of body of heater 201 Wall, when the outer wall of body of heater 201 is arranged on, it is also possible to one layer of overcoat is set in the periphery of the heating element heater 203, with to place Protected in the heating element heater 203 of 201 outer wall of body of heater.The overcoat can be made up of heat insulation layer and protective layer two parts. Its heat insulation layer is made up of heat-insulating material filling, and protective layer is fixed on the outside of insulating barrier, so that insulating barrier is located at 201 outer wall of body of heater And protective layer between.Protective layer outside insulating barrier can be cancellated sheetmetal plate or insulation board, to prevent foreign objects Body collides or rubs heat insulation layer.

Preferably, the combustion furnace can be a kind of circulating combustion furnace, also with unique combustion furnace sample introduction blowback system System, it is ensured that all nitrogen component complete oxidations, to eliminate the interference of environmental factor, beneficial to low content sample detection, so as to realize It is more accurate to analyze, it is ensured that the reliability of result.

Used as a preferred embodiment, above-mentioned power electronic equipment 202 can be an applying electronic pipe higher-order of oscillation electricity The automatic constant temperature controller on road, wherein, the energy storage coil of the electron tube high-frequency oscillating circuits is due to coupling the appropriate of electrical storage device Coordinate, a certain frequency of oscillation can be secured to；Energy storage coil has constant temperature index, and has large-scale thermocouple thermometer, bright The temperature of high temperature furnace is indicated really；Meanwhile, there is a metal penoncel on the pointer of energy storage coil, the temperature needed for furnace temperature is raised to, temperature When the penoncel of degree index is coupled with energy storage coil, oscillating current stops at random, and electron tube plate current therefore changes, and makes which grasp Vertical one extremely sensitive relay, then control a strength relay to cut off the electric current of heating wire with this, temperature is no longer increased, Upon a drop in temperature, the penoncel of pointer is lost with energy storage coil and is coupled, and electron tube recovers vibration, controlled strength relay again Also recover the electric current by high temperature furnace simultaneously, furnace temperature can be edged up again.It is interrupted so because of electric current, keep automatically a constant temperature to reach The purpose of degree.

Likewise, used as a preferred embodiment, above-mentioned heating element heater 203 can be high-quality Tercod；

It should be noted that in the utility model embodiment, before testing sample enters burner 200, can be with The physical treatment of early stage is carried out by sample introduction processing meanss 100.Wherein, the early stage physical treatment of the testing sample can be divided into The following two kinds situation：(1) if testing sample is the solid sample of anisotropic, testing sample is pulverized and sieved before sample is claimed Process；(2) if testing sample is liquid and sauce class sample, directly can claim in crucible.Wherein, in the utility model reality Apply that crucible described in example is reusable, to reach the technique effect without the need for consumptive material.Meanwhile, required for the utility model embodiment Crucible can be following crucible in one kind：Quartz, ceramics, steel, nickel, platinum etc., to reach the mesh for being suitable for various testing samples 's.When being analyzed using other instruments so as to overcome, sample must pressing mold shaping and with tinfoil wrap up just can sample introduction analysis, sample Prepare complicated, tin can is medical disposable material, and operating cost is high, the more technological deficiency of combustion-supporting gas and carrier gas consumption.Further, As the utility model embodiment is processed as digested the chemical reagent with toxicity, so as to eliminate without the need for any extra sample chemical Traditional Kjeldahl's method complex operation, digestion time length, the technological deficiency that environmental pollution is serious, safety coefficient is low.

In the utility model embodiment, the testing sample is directly weighed in the repeatedly used crucible, earthenware Crucible be located at sampler on and can Reusability, the testing sample weigh can with using PC ends automation record by the way of, That is, sample introduction processing meanss 100 can at least include an electronic weigher, can be weighed in real time by the electronic weigher and be located at The quality of sample in crucible, and weight DBMS in the weight data information transfer for being gathered to PC ends, will be generated and preserved, from And effectively eliminate by manual entry data and the technological deficiency of caused recording error and/or calculation error.

Explanation is needed exist for, in order to be able to data measured in the utility model embodiment are stored and shown Show.Preferably, continuing with referring to Fig. 2, the utility model embodiment is additionally provided with a data storage 800 and a display device 700.Wherein, the data storage 800 carries out signal transmission with the electronic weigher and the detection means respectively, with right The data of reception are stored.Meanwhile, display device is connected and carries out signal transmission with the detection means, to receive the inspection The data message detected by device is surveyed, and the data message is shown.Certainly, display device here can include one Power supply source 701 and a display end 702.The display end 702 is connected with the power supply source 701, with by the power supply source 701 The display end 702 is powered in real time, and the display end 702 is carried out signal transmission with the detection means.It is worth one It is mentioned that, the display end is liquid crystal display.

Further, the sample introduction processing meanss 100 at least include：Sampler 101, mechanical arm 102, power source 103, Plus/minus speed mechanism, transmission device and bracket institution etc.；Wherein, the sampler 101 is porous plate disc structure.It is intrinsic thereon One crucible 104；Mechanical arm 102 is rotationally fixed on the sampler 101, and the power source 103 is mechanical arm 102 Operation provides power, to drive sampler 101 to be moved by the motion of mechanical arm 102, and then realizes driving crucible 104 to enter Row motion.Here power source 103 can select stepper motor or servomotor as controlled motor.But preferably, this reality With new embodiment from stepper motor as mechanical arm 102 power source 103 so as to control mode flexibly, take up an area face The advantages of product little, low price.Meanwhile, plus/minus speed mechanism, transmission device are connected with mechanical arm 102 respectively so that by plus/ Motion of the reducing gear to mechanical arm 102 is accelerated or is slowed down, bracket institution to mechanical arm 102, acceleration and deceleration mechanism and/ Or transmission device is supported.And transmission device can be ball screw nut transmission, so that the rotation of mechanical arm is transported It is dynamic to be converted to linear motion, to promote the crucible equipped with testing sample to be moved.Wherein, plus/minus speed mechanism and transmission device Frame for movement and motion principle think prior art, here is omitted.

In detail, in the utility model embodiment, 1100 DEG C of combustion furnaces are using unique upper furnace structure and by under And on vertical input mode.That is, body of heater 201 is located at the top of sampler 101.

Wherein, the transmission of the sampler 101 is connected by control using the vertical input mode of linear pattern from bottom to top The mechanical arm 102 for being connected to the sampler 101 heads into the crucible 104 on sampler 101 in body of heater 201 so that sample After being burnt in combustion furnace completely, mechanical arm 102 is transferred to which on sampler 101 from top to bottom.Sample after ashing is then protected Stay in crucible 104, and the automatic interference-free of sample after ashing can be transferred to into instrument by controlling sampler 101 after analysis Outside device, dust is cleaned without blow-on, need not safeguard；Sample direct injected, need not reach solid with tinfoil parcel, without pressing mold Body, fluid sample test are all obtained accurate result.The design is substantially shorter detection cycle, and can extend thermal cycle part Service life (4-5 times).Determine to determine using the Dumars of the next furnace design in blood urea/nitrogen analyzer so as to effectively overcome tradition Nitrogen instrument sample must pressing mold shaping and with tinfoil parcel after just can sample introduction analysis, and in cinder catcher sample ash reach it is a certain amount of The technological deficiency that dust in cinder catcher is removed by necessary craft blow-on afterwards.

The utility model embodiment is by using unique upper furnace structure and vertical input mode, realizing The quick detection of solid, fluid sample, moreover it is possible to reach the full automation from sample process to assay.Additionally, burning is produced Raw carrier gas stream can take away sample dust automatically, clean dust without blow-on, need not safeguard, realize multiple samples while detecting, And sample-adding can be circulated.This improvement can greatly promote automaticity, shorten sample processing time, improve system effectiveness, And can significantly extend system service life.

It should be strongly noted that in the utility model embodiment, due to the testing sample and in burner 200 Contain moisture in the product of interior burning, thus from burner 200 gaseous state NOx out need through de-watering apparatus 300 Carry out except water process.The de-watering apparatus 300 are connected between the burner 100 and the reduction apparatus 400, specifically may be used As shown in Figures 2 and 3.

Certainly, it should be noted that in sample introduction processing meanss 100 here, the quantity of sampler 101 can also be many Individual, mechanical arm 102 is provided with the multiple lever arms being adapted with 101 quantity of sampler, and one is fixed with each lever arm Corresponding sampler, is fixed with a crucible on each sampler 101.Thus can cause by set by mechanical arm 102 Several lever arms put, while being flexibly controlled to several samplers 101, i.e. realize selectively to sampler Sample in 101 is burnt.

Further, refer to shown in Figure 15, described in the utility model embodiment, de-watering apparatus 300 include one-level eliminating water 310, two grades of water removal bodies 320 of mechanism and third class de-watering mechanism 330.Wherein, the one-level water removal body 310 and described two grades are removed Water dispenser structure 320 is in parallel, and using the one-level water removal body 310 after parallel connection and two grades of water removal bodies 320 as an entirety From the point of view of, its one end is connected with the burner, with the mixed gas produced after receiving the burner burning；The other end with The third class de-watering mechanism 330 connects so that the third class de-watering mechanism 330 respectively with 310, two grades of the one-level water removal body Water removal body 320 constitutes the structural relation of series connection, to realize receiving by the third class de-watering mechanism 330 removing through the one-level Water dispenser structure 310 and two grades of water removal bodies 320 are except the mixed gas after water process.

It should be noted that in the utility model embodiment, why de-watering apparatus 300 are arranged to multistage water removing machine Structure, it is to carry out multistage eliminating water to mixed gas that one side purpose is, is sufficiently removed with the moisture guaranteed in mixed gas. On the other hand by the one-level water removal body 310 and two grades of water removal bodies 320 by the way of being connected in parallel, so that Enter from the mixed gas of burner output in the receiving terminal of the one-level water removal body 310 and two grades of water removal bodies 320 Row mixing, buffering, are balanced with the airflow rate of the mixed gas to being exported by burner, it is to avoid the mixed gas of output Air velocity is too fast and cannot obtain abundant eliminating water.Simultaneously by parallel connection after the one-level water removal body 310 and described two grades remove Water dispenser structure 320, the mixed gas for being exported mix in the output end of one-level water removal body 310 and two grades of water removal bodies 320, then Carry out eliminating water again in third class de-watering mechanism 330 is flowed into, same principle, this is also caused by one-level water removal body 310 or two The airflow rate of mixed gas of the output end output of level water removal body 320 obtained effective buffering, balance, it is to avoid export After mixed gas input third class de-watering mechanism, air velocity is too fast and cannot obtain abundant eliminating water.

Certainly, in the utility model embodiment, 320 phase of the one-level water removal body 310 and two grades of water removal bodies Parallel connection, and using the one-level water removal body 310 after parallel connection and two grades of water removal bodies 320 as one on the whole, its one end It is connected with the burner, with the mixed gas produced after receiving the burner burning；The other end is removed with the three-level Water dispenser structure 330 connects so that the third class de-watering mechanism 330 respectively with 310, two grades of water removal bodies of the one-level water removal body 320 structural relations for constituting series connection, this kind of connected mode can be defined as the connected mode 1 of water removal body.Certainly, the connection Mode 1 is only merely a kind of 310, two grades of connection sides between water removal body 320 and third class de-watering mechanism 330 of one-level water removal body Formula, the utility model embodiment are not limited to.

Words sentence is talked about, for other of 310, two grades of water removal bodies 320 of one-level water removal body and third class de-watering mechanism 330 connect Mode is connect, as long as the technique effect of effective eliminating water can be reached, the utility model embodiment is may also apply to.Such as, for letter Change structure design, the utility model embodiment can adopt the connected mode 2 of water removal body, directly mutually go here and there three water removal bodies Connection, i.e., 310, two grades of water removal bodies 320 of one-level water removal body and third class de-watering mechanism 330 are sequentially connected with, or in order to reduce into This, using the connected mode 3 of water removal body, removes third class de-watering mechanism, by two grades of water removal bodies 320 and one-level water removal body 310 are in series.Again or in order to further reduce manufacturing cost, using the connected mode 4 of water removal body, only removed from one-level Any one water removal body in 310, two grades of water removal bodies 320 of water dispenser structure and third class de-watering mechanism 330, and fill with burning respectively Put and connect with reduction apparatus, to reach the technical scheme of the technique effect of eliminating water, also within protection domain of the present utility model. It should be noted that 310, the two grades of water removal bodies 320 of one-level water removal body and third class de-watering machine in the utility model embodiment " one-level ", " two grades ", " three-level " in structure 330 is only to carry out coding label to several water removal bodies, is conveniently retouched to describe State, namely three water removal bodies are identical in the utility model embodiment.

That is, in the utility model embodiment, the one-level water removal body 310 can include：First glass physical Condenser 301, the first electronic cooling dehydrater 302 and the first adsorbent 303.Two grades of water removal bodies 320 can include：The Two glass physical condensers, the second electronic cooling dehydrater and the second adsorbent；The three-level purification mechanism 330 can include： 3rd glass physical condenser, the 3rd electronic cooling dehydrater and the 3rd adsorbent.

Due to 310, two grades of water removal bodies 320 of one-level water removal body and third class de-watering mechanism in the utility model embodiment 330 completely similarly hereinafter, below only by taking the connected mode 4 of above-mentioned water removal body as an example, to elaborate to the utility model, is placed in 1,2, the 3 non-detailed portion of connected mode of water removal body, and two grades of water removal bodies 320,330 self structures of third class de-watering mechanism Non- detailed portion, sees also the specific descriptions of one-level water removal body 310 in connected mode 4 in water removal body.

Specifically, Fig. 3 is referred to, for the one-level water removal body 310 in the connected mode 4 of water removal body, its Including the first glass physical condenser 301, the first electronic cooling (2 DEG C) dehydrater 302 and the first adsorbent 303.Wherein, in institute State in de-watering apparatus 300, first by 301 eliminating water of the first glass physical condenser, then by the first electronic cooling dehydrater 2 DEG C eliminating water, adsorbs eliminating water finally by the first adsorbent 303.That is, first allow after the first glass physical condenser 301 will burn Product carry out physics cooling by vapor is liquefied eliminating water, then further cooled down by the first electronic cooling dehydrater 302 Under test gas simultaneously remove vapor again by by vapor liquefaction, fully absorb moisture finally by the first adsorbent 303 To reach the purpose of thorough eliminating water, to guarantee that the combustion product vapor is removed completely, so that moisture is completely eliminated to nitrogen content The impact of the degree of accuracy of measure.

Preferably, in the de-watering apparatus 300 of the utility model embodiment offer, the first glass physical condenser 301 can be third generation double-tee glass condenser, be rapidly decreased to 2-3 degree Celsius from high temperature, will be contained in combustion product Then moisture extracted and separated by Water vapor condensation Cheng Shui.Complete first step eliminating water.It is noted that this practicality is new It is necessary for carry out the first step condensing eliminating water by the first glass physical condenser 301 in type embodiment, by high-temperature combustion product Efficiently significantly lower the temperature so as to be reduced to 2-3 DEG C, provide for follow-up 302 electronic cooling eliminating water of electronic cooling dehydrater then and remove Water condition.

Further, the first electronic cooling dehydrater 302 can be semiconductor cooler, using extraordinary semiconductor material The P-N junction that material is constituted, formation thermocouple pair, generation Peltier effect (when two kinds of different metals are coupled together and pass to electric current, Have a joint to absorb heat, another joint heat release), i.e., a kind of New Refrigerating method freezed by direct current.Electronic cooling effect Generation is exactly the principle by thermoelectricity, is the cooling piece of a monolithic, and it is made up of two panels potsherd, has N-type and p-type in the middle of which Semi-conducting material (bismuth telluride), this semiconductor element on circuit be with cascade connection constitute.Semiconductor chilling plate Operation principle be：When one piece of N-type semiconductor material and one piece of p-type semiconductor material are coupled to galvanic couple pair, with copper sheet two Individual semiconductor is coupled together.After connecting DC current in this circuit, the transfer of energy can be just produced, electric current is by N-type element The joint for flowing to p-type element absorbs heat, becomes cold end, flows to the joint release heat of N-type element by p-type element, becomes heat End.The heat in hot junction is taken away by various radiating modes, cold end can just keep lower temperature.The size of heat absorption and heat release is logical The element logarithm of the size and semi-conducting material N, P of overcurrent is determining.Galvanic couple is unified into by up to a hundred inside cooling piece Thermoelectric pile, to reach the effect for strengthening refrigeration, when heat load is zero, most strong refrigeration can reach 80 DEG C of temperature difference.Electronics The temperature difference amplitude of refrigeration is limited, and also further illustrates the necessity that the first step glass physical condenses eliminating water.

And then, due to the water removal phase for having had first two steps, most moisture have been removed by, so only needing to The first a small amount of adsorbent 303 can reach the effect for eliminating moisture well, so as to greatly save the usage amount of adsorbent, Overcome defect of traditional azotometer using a large amount of adsorbent high costs.Preferably, the absorption in the utility model embodiment Agent can be silica gel, activated alumina or activated carbon.

Finally it should be noted that by above-mentioned one-level water removal body 310, effectively ensuring through burner 200 Combustion product vapor afterwards is removed completely, to be completely eliminated impact of the moisture to the degree of accuracy of nitrogen analysis, and can be with Direct Analysis fluid sample, so as to substantially reduce the use of adsorbent, reduces operating cost.Certainly, as stated above, herein The utility model enters to the operation principle of water removal body only as a example by only including one-level water removal body 310 in de-watering apparatus 300 Row description, during actual job, also can be by 310, two grades of water removal bodies 320 of one-level water removal body and third class de-watering mechanism 330 constitute de-watering apparatus 300 to carry out efficient water-removing according to above-mentioned connected mode 1-3, and the utility model does not limit to, herein Also repeat no more.

Secondly, for reduction apparatus 400,

The reduction apparatus 400 include：Reduction furnace 402, part flow arrangement 401, non-dispersive IR line (NDIR) sensor 403.Wherein, the 302 direct phase of the electronic cooling (2 DEG C) dehydrater in the part flow arrangement 401 and higher level's de-watering apparatus 300 Even, subsequently it is connected with the reduction furnace 402, is sensed by the NDIR between the reduction furnace 402 and the purifier 500 Device 403 is connected.

Specifically, part flow arrangement 401 described in the utility model embodiment is a kind of accurate gas diverter, is shunted Ratio is 1/35 or 1/80, reduces front Partial flow dilution gas into reduction furnace 402 in gas, saves copper reduction stove so as to reach The consumption of 402 reducing agent and the purpose of the cost of measurement every time is saved, meanwhile, built-in membrane disappears deimpurity interference.Specifically Ground, it is as N (nitrogen) burning conversions are into substantial amounts of gaseous NOx, too high for detector concentration, and reduced During can consume substantial amounts of reducing agent, therefore, will be from the burner 200 out and through three by part flow arrangement 401 Reduction detection after gaseous sample shunting after individual condensing unit condensation eliminating water, remaining gas pass through adsorbent adsorption treatment heel row Remove.

The nitrogen oxides that burning is generated is spread using helium as carrier gas after the accurate gas diverter shunting Send, the nitrogen oxides is completely reduced as dinitrogen in 600 DEG C of copper reduction stoves, while the oxygen of excess is combined into oxidation by copper Copper.It is used for controlling the amount of oxygen needed for best combustion using non-dispersive IR line (NDIR) sensor, this can ensure that oxygen Minimum with the consumption of copper, highest can save 95% oxygen consumption.

(non-dispersive IR line) sensor 403 adopted in the utility model embodiment can be measured in mixed gas not With the concentration of gas.Asymmetric double atom and polyatomic gas have selection absorbability to infrared energy.This property is A kind of property that infrared active material has in itself, with uniqueness, such as the DNA of human body, everyone DNA is different, And will not change because of the change of any environmental factor or condition, therefore material can be carried out according to this property qualitative and fixed Amount analysis.Different gas has different absorption spectrums, and absorption spectrum is made up of the spectral line in the range of certain frequency, is had Certain broadband, in broadband, the absorption intensity of each Frequency point is different.If infrared radiating light spectral limit includes tested The absorption bands of gas is when infra-red radiation is by the air chamber full of tested gas, strong in the energy of corresponding frequencies infra-red radiation The decay for being actually taken up by gas and causing energy is spent, and gas concentration is bigger, energy attenuation is more severe, by analyzing attenuation It is finally inversed by the concentration of under test gas.

The detection method of non-dispersive IR line (NDIR) the principle sensor 403 can adopt spectral absorption calculus of finite differences Detection.Infrared light is sent through divided beams by light source, after reference channel and tested passage air chamber absorb, optical signal is detected Device carries out enhanced processing after being converted into electric signal.Because of the effect phase of the change to two paths of signals of such environmental effects and infrared light Together, difference detecting method eliminates the impact of these destabilizing factors, can truly reflect tested gas concentration information.

Again, for purifier 500,

Continuing with referring to Figure 15, purifier 500 described in the utility model embodiment include first class purification mechanism 510, Secondary purification mechanism 520 and three-level purification mechanism 530.Wherein, the first class purification mechanism 510 and the secondary purification mechanism 520 are in parallel, and using the first class purification mechanism 510 after parallel connection and the secondary purification mechanism 520 as one on the whole, its One end is connected with the reduction apparatus 400, with the gas produced after receiving the reduction apparatus reduction；The other end and the three-level Purification mechanism 530 connects so that the three-level purification mechanism 530 respectively with the first class purification mechanism 510, secondary purification mechanism 520 structural relations for constituting series connection, to realize receiving through the first class purification mechanism by the three-level purification mechanism 530 510 and 520 purified treatment of secondary purification mechanism after gas.

It should be noted that in the utility model embodiment, why purifier 500 is arranged to multistage purification machine Structure, it is to carry out multistage purification to gas that one side purpose is, to guarantee that mixed gas are sufficiently purified.On the other hand will be described First class purification mechanism 510 and the secondary purification mechanism 520 are by the way of being connected in parallel, so that from reduction apparatus 400 The mixed gas of output are carried out mixing, are delayed in the receiving terminal of the first class purification mechanism 510 and the secondary purification mechanism 520 Punching, is balanced with the airflow rate of the mixed gas to being exported by reduction apparatus 400, it is to avoid the mixed gas gas velocity of output Spend fast and cannot be fully purified.While the first class purification mechanism 510 and the secondary purification mechanism after by parallel connection 520, the mixed gas for being exported mix in the output end of first class purification mechanism 510 and secondary purification mechanism 520, are then flowing into Purified in three-level purification mechanism 530 again, same principle, this is also caused by first class purification mechanism 510 or secondary purification The airflow rate of mixed gas of the output end output of mechanism 520 obtained effective buffering, balance, it is to avoid the gaseous mixture for exporting After body input three-level purification mechanism 530, air velocity is too fast and cannot be fully purified.

Certainly, in the utility model embodiment, the first class purification mechanism 510 and 520 phase of secondary purification mechanism Parallel connection, and using the first class purification mechanism 510 after parallel connection and the secondary purification mechanism 520 as one on the whole, its one end It is connected with the reduction apparatus 400；The other end is connected with the three-level purification mechanism 530 so that the three-level purification mechanism 530 Constitute the structural relation connected respectively with the first class purification mechanism 510, secondary purification mechanism 520, can be by this kind of connection side Formula is defined as the connected mode 1 of purification mechanism.Certainly, the connected mode 1 is only merely first class purification mechanism 510, secondary purification A kind of connected mode between mechanism 520 and three-level purification mechanism 530, the utility model embodiment are not limited to.

Words sentence is talked about, for other of first class purification mechanism 510, secondary purification mechanism 520 and three-level purification mechanism 530 connect Mode is connect, as long as the technique effect of effective purification can be reached, the utility model embodiment is may also apply to.Such as, for letter Change structure design, the utility model embodiment can adopt the connected mode 2 of purification mechanism, directly mutually go here and there three purification mechanisms Connection, i.e., first class purification mechanism 510, secondary purification mechanism 520 and three-level purification mechanism 530 are sequentially connected with, or in order to reduce into This, using the connected mode 3 of purification mechanism, removes three-level purification mechanism, by secondary purification mechanism 520 and first class purification mechanism 510 are in series.It is again or in order to further reduce manufacturing cost, using the connected mode 4 of purification mechanism, only net from one-level Change mechanism 510, any one purification mechanism in secondary purification mechanism 520 and three-level purification mechanism 530, and respectively with reduction apparatus Connect with detection means, to reach the technical scheme of the technique effect of purification, also within protection domain of the present utility model.Need It should be noted that the first class purification mechanism 510, secondary purification mechanism 520 and three-level purification mechanism in the utility model embodiment " one-level ", " two grades ", " three-level " in 530 is only to carry out coding label to several purification mechanisms, to describe convenient description, Namely three purification mechanisms are identical in the utility model embodiment.

That is, in the utility model embodiment, the first class purification mechanism 510 can include：First absorber 501 With the second absorber 502.The secondary purification mechanism 520 can include：3rd absorber and the 4th absorber.The three-level is net Changing mechanism 530 can include：5th absorber and the 6th absorber.

Due to first class purification mechanism 510, secondary purification mechanism 520 and three-level purification mechanism in the utility model embodiment 530 completely similarly hereinafter, below only by taking the connected mode 4 in above-mentioned purification mechanism as an example, to elaborate to the utility model, puts Tie in 1,2, the 3 non-detailed portion of connected mode of purification mechanism, and secondary purification mechanism 520, three-level purification mechanism 530 itself The non-detailed portion of structure, sees also the specific descriptions of first class purification mechanism 510 in connected mode 4 in purification mechanism.

Specifically, continuing with referring to Fig. 3, for the first class purification mechanism 510 in the connected mode 4 of water purification mechanism Speech, which includes the first absorber 501 and the second absorber 502, wherein, first absorber 501 directly with the non-dispersive Property infrared ray sensor 403 be connected, second absorber 502 is connected with institute detection means 600.Specifically, through reduction After process, except nitrogen molecular in air-flow, also contain other impurities, it is therefore desirable to remove in reducing gas by purifier CO2/SO2, water and halogen, it is ensured that the degree of purity of nitrogen molecular, and then ensure the accurate reliability of test.Gas after reduction passes through First absorber 501, can remove CO2/SO2 and halogen；Further, then by second absorber 502, can be with Remove moisture removal.By two step adsorption processes, the removal of impurity can be reached, purify the purpose of gas nitrogen to be detected.Wherein, it is described First absorber 501 possesses dehalogenation function, can eliminate halogen, effectively prevents the detection means described in halogen into subordinate and makes Into infringement, so as to reach the purpose for protecting the detection means.Preferably, first absorber 501 is sulfur dioxide/bis- Carbonoxide halogen absorber；And/or, second absorber 502 is water absorber.Certainly, as stated above, this reality herein With it is new only as a example by only including first class purification mechanism 510 in purifier 500 retouching to the operation principle of purification mechanism State, during actual job, also first class purification mechanism 510, secondary purification mechanism 520 and three-level purification mechanism 530 can be pressed Constitute purifier 500 to carry out high-efficient purification according to above-mentioned connected mode 1-3, the utility model does not limit to, herein also not Repeat again.

For finally, for detection means 600,

The detection means 600 includes：TCD thermal conductivity detector (TCD)s 601, mass flowmenter 602.Wherein, the TCD thermal conductivities inspection Survey device 601 to be directly connected with the second absorber 502 described in upper level purifier 500, the mass flowmenter 602 directly connects After being connected on the TCD thermal conductivity detector (TCD)s 601, it is last device link of sample detection.

Remaining nitrogen in carrier gas stream is detected using the TCD thermal conductivity detector (TCD)s 601.TCD thermal conductivity detector (TCD)s 601 are also known as warm Lead pond or heated filament examines hot device, be a kind of the most frequently used detector of gas chromatography.The operation principle of the thermal conductivity detector (TCD) is base There are different thermal conductivities in gas with various, the sensing element of the detector is heated filament, such as tungsten filament, platinum filament, rhenium silk, and by heat Silk composition electric bridge, in the thermal conductivity detector (TCD) of the new azotometer, uses tungsten filament, also replaces tungsten filament with other heated filaments Can, heated filament has the characteristic that resistance is varied with temperature.When there is a constant dc to pass through the thermal conductivity detector (TCD), heated filament is added Heat.As the conduction of heat of carrier gas makes a part of heat of heated filament be taken away by carrier gas, a part passes to pond body.When heated filament is produced Heat and dissipated heat when reaching balance, hot-wire temperature is just stable in certain numerical value.Now, heated filament resistance is also stabilized in necessarily Numerical value.What is be passed through due to reference cell and measuring cell is all pure carrier gas, and same carrier gas has identical thermal conductivity, therefore the electricity of two-arm Resistance is identical, bridge balance, no signal output, and record system record is straight line.It is when there is sample to enter detector, pure Carrier gas flows through reference cell, and carrier gas carries component air-flow Jing measuring cells, due to carrier gas and component binary mixture to be measured Thermal conductivity is different with the thermal conductivity of pure carrier gas, heat dispersal situations in measuring cell thus change, in making reference cell and measuring cell hole Difference is generated between heater resistance value, electric bridge disequilibrium, detector have voltage signal to export, and recorder draws respective components Chromatographic peak.In carrier gas, the concentration of component to be measured is bigger, and in measuring cell, heat conductivity of gas changes more notable, temperature and resistance value Change also more notable, voltage signal is stronger.The voltage signal for now exporting is directly proportional to the concentration of sample, this exactly thermal conductivity inspection Survey the quantitative basis of device.

Therefore, when with the new azotometer measurement total nitrogen content, in the thermal conductivity detector (TCD), N2 volume contents Cause a kind of electronic measurement signal, by it, then through the independence correction of material, the nitrogen content in sample is just automatically Calculate, print and store.Specifically, the standard correction material adopts EDTA or urea, and only needs to regular calibration, Start need not make blank and standard correction every time.Possess it is simple to operate, the characteristics of be widely used.

The TCD thermal conductivity detector (TCD)s 601 do not destroy monitored component in detection process, are conducive to the collection of sample, or It is combined with other instruments.The TCD thermal conductivity detector (TCD)s 601 can meet the quantitative requirement of peak height in Industrial Analysis, be suitable for factory Control analysis.Meanwhile, TCD thermal conductivity detector (TCD)s 601 have a broad working range, measurable covering as little as ppm ranks, up to The analysis of the total nitrogen/protein of percentage concentration content.

The mass flowmenter 602 adopts thermal measuring method, i.e., how many by molecular mass that split molecule is taken away So as to measuring flow.Because being measured with thermal, will not because of gas temperature, pressure change so as to having influence on survey The result of amount.Mass flowmenter 602 is a more accurate, quick, reliable, efficient, stable, flexible flow measurement instrument. Mass flowmenter 602 can not control flow, and it can only detect the mass flow of liquid or gas, by analog voltage, electricity Stream or serial communication output flow value.

It should be added that, in the utility model embodiment, the concentration of the combustion gas oxygen being passed through is 99.995%, the concentration of the carrier gas stream helium being passed through is 99.99%, and the flow of the oxygen that is passed through and helium is by matter Amount stream controller is automatically controlled.Wherein, the mass flowmenter 602, is that one kind can be in detection while and can be controlled Instrument.Mass flowmenter 602 itself except measuring part, also with a solenoid valve or piezo electric valve, such quality Flow control itself constitutes a closed-loop system, for controlling the mass flow of fluid.The setting value of mass flowmenter 602 can be with There is provided by analog voltage, analog current, or computer, PLC.

Supplementary notes are needed further exist for, in the utility model embodiment, need to also be described with multistage purification machine Built-in 40 DEG C ± 0.1 DEG C of Thermotank devices in the nitrogen content testing equipment of structure, to guarantee system detector, current divider, gas collection The temperature constant state of the devices such as gas system, gas circuit control, it is to avoid as the change of environment temperature causes the change of gas flow path stability Change, improve analysis precision and the degree of accuracy.

To sum up, the testing sample is after the physical treatment of early stage and automatic Weighing, in the vertical mechanical sample introduction Enter in the homogeneous combustion furnace of 1100 DEG C of high temperature from the sampler in the presence of arm, fully burn with oxygen, then pass through Combustion product and impurity are carried out cooling de-watering by " condensation of the three steps " device, then are shunted by the gas diverter is accurate Under test gas sample after burning, then helium is passed through as the current-carrying gas of the gaseous sample being diverted, send into together described 600 DEG C of copper reduction stoves, by nitrogen molecular Restore All out, meanwhile, the oxygen needed for best combustion is controlled using NDIR sensors Amount, this can ensure that the consumption of oxygen and copper is minimum, then passes through first absorber and the second absorber removes CO2/ SO2, halogen and water, are then passed through pure nitrogen in the TCD thermal conductivity detector (TCD)s, detect the concentration of nitrogen, finally by The mass flowmenter, is detected the mass flow of nitrogen, in conjunction with the nitrogen gas concn surveyed, is calculated by software for calculation automatically Total nitrogen content in the testing sample.

Based on the device embodiment that above-described embodiment is provided, Figure 10-14 are referred to, another embodiment of the present utility model is also It is there is provided a kind of embodiment of the method corresponding with device embodiment, specific as follows：

Another embodiment of the present utility model provides a kind of method for determining nitrogen content, specifically includes as follows：Step 1000, combustion step for burning to testing sample by burner, and produces mixed gas, the combustion step In, the ignition temperature of the burner is 1100 DEG C, and is constant temperature；Step 2000, reduction step, for by reduction apparatus The mixed gas are reduced, in the reduction step, the reduction temperature of the reduction apparatus is 600 DEG C, and be constant temperature； Step 3000, purifying step for being purified to the mixed gas after reduction by purifier, are gone the removal of impurity, are remained Residual air body；Wherein, the impurity at least include it is following in one kind：Water, carbon dioxide or halogen；Step 4000, detection step Suddenly, for being detected to the nitrogen content in the remaining gas by detection means.

Further, another embodiment of the present utility model also includes；Step 5000, sampling procedure, for by sample introduction Processing meanss are sampled, and obtain the testing sample, and the testing sample is sent in the way of vertical sample introduction the combustion Burnt in burning device.Step 6000, water removal phase, for carrying out through the mixed gas produced by the combustion step Except water process, to remove the moisture in the mixed gas.

Wherein, the water removal phase 6000 also includes following sub-step：Step 6001, the first eliminating water sub-step, will be described Mixed gas are sent into glass physical condenser and carry out an eliminating water；Step 6002, the second eliminating water sub-step will be through once removing Mixed gas after water carry out secondary eliminating water in sending into electronic cooling dehydrater；The 3rd eliminating water sub-step of step 6003, will pass through Mixed gas after secondary eliminating water carry out three eliminating waters in sending into adsorbent.

Wherein, the purifying step also includes following sub-step：Step 3001, the first purification sub-step, after reduction Mixed gas are sent into sulfur dioxide/carbon dioxide halogen absorber and carry out primary purification；Step 3002, the second purification sub-step, Mixed gas after primary purification are sent in adsorbent carries out double purification.

Wherein, the reduction step also includes following sub-step：Step 2001, shunts sub-step, for by shunting dress Put and mixed gas are shunted, to be diluted to the mixed gas；Step 2002, goes back atomic step, after shunting Gas is reduced in reduction furnace；Step 2003 flow control sub-step, is carried out for the flow to the oxygen in the reduction furnace Control.

Due to the method for the measure nitrogen content that another embodiment of the present utility model is provided, with above-mentioned device embodiment phase Correspondence, thus it is no longer excessive to embodiment of the method herein repeat, in embodiment of the method, non-detailed portion see device enforcement Example.

Although having been described for preferred embodiment of the present utility model, those skilled in the art once know substantially Creative concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to bag Include preferred embodiment and fall into the had altered of the utility model scope and change.

Obviously, those skilled in the art can carry out various changes and modification without deviating from this practicality to the utility model New spirit and scope.So, if it is of the present utility model these modification and modification belong to the utility model claim and Within the scope of its equivalent technologies, then the utility model is also intended to comprising these changes and modification.

Claims (10)

1. a kind of nitrogen content testing equipment with multistage purification mechanism, it is characterised in that include：

Burner, for the burning of testing sample, and produces mixed gas；

De-watering apparatus, the de-watering apparatus are connected with the burner, are produced after burner burning for removing Moisture in raw mixed gas；Wherein, the de-watering apparatus include：One-level water removal body；

Reduction apparatus, the reduction apparatus are connected with the one-level water removal body so that from the one-level water removal body out after Mixed gas be reduced in the reduction apparatus；

Purifier, the purifier are connected with the reduction apparatus, to purify to the mixed gas after reduction；Its In, the purifier includes：

First class purification mechanism；

Secondary purification mechanism；The first class purification mechanism and the secondary purification mechanism are in parallel, and the one end after parallel connection and institute Reduction apparatus connection is stated, with the mixed gas produced after receiving the reduction apparatus burning；

Three-level purification mechanism, the three-level purification mechanism with it is in parallel after the first class purification mechanism and the secondary purification mechanism The other end connection so that the three-level purification mechanism is in series with the first class purification mechanism, secondary purification mechanism respectively, with Gas after the first class purification mechanism and secondary purification mechanism purified treatment is received by the three-level purification mechanism Body；

Detection means, the detection means are connected with the purifier, to examine to the nitrogen content in purified gas Survey；

Sample introduction processing meanss, the sample introduction for entering early stage of advancing to the testing sample are processed；And the burner is vertically Be fixed on the top of the sample introduction processing meanss so that through early stage sample introduction process after the testing sample by it is described enter Sample processing meanss, burn in being admitted to the burner.

2. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 1, it is characterised in that：

The burner is temperature control in 1100 DEG C of combustion furnace；

And the combustion furnace includes：

Body of heater so that the testing sample burns in the furnace interior；

Electron electric power device, is connected with the body of heater, for 1100 DEG C of temperature environment is provided to the body of heater, so that described treat The fully oxidized burning in the body of heater of test sample product；

Heating element heater, the heating element heater are uniformly arranged on the inwall of the body of heater, make the temperature of the inside of the body of heater It is uniformly distributed in the body of heater.

3. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 2, it is characterised in that：

The heating element heater is associated layer made by Tercod, is attached on the inwall of the body of heater.

4. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 1, it is characterised in that described also original-pack Put including：

Current divider, the current divider are connected with the third class de-watering mechanism, with mixed to what is transferred out by the third class de-watering mechanism Close gas to be shunted；

Reduction furnace, the reduction furnace are connected with the current divider and the detection means respectively, to carry out to the gas after shunting Reduction, and will be detected in the gas feeding detection means after reduction.

5. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 1, it is characterised in that

The first class purification mechanism includes：First absorber and the second absorber；First absorber respectively with the reduction Device and second absorber connection；

And,

The secondary purification mechanism includes：3rd absorber and the 4th absorber；3rd absorber respectively with the reduction Device and the 4th absorber connection；

And,

The three-level purification mechanism includes：5th absorber and the 6th absorber；5th absorber is respectively with described second Absorber connection, the 4th absorber and the 6th absorber connection, the 6th absorber are connected with the detection means Connect.

6. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 5, it is characterised in that

First absorber is sulfur dioxide/carbon dioxide halogen absorber；Second absorber is water absorber；

And/or,

3rd absorber is sulfur dioxide/carbon dioxide halogen absorber；4th absorber is water absorber.

7. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 1, it is characterised in that the detection dress Put including：

TCD thermal conductivity detector (TCD)s；

Mass flowmenter；

Wherein, the TCD thermal conductivity detector (TCD)s are connected with the purifier and the mass flowmenter respectively.

8. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 1, it is characterised in that；

The one-level water removal body includes：First glass physical condenser, the first electronic cooling dehydrater and the first adsorbent；Institute State the first glass physical condenser to be connected with the burner and the first electronic cooling dehydrater respectively；Described first inhales Attached dose is connected with the first electronic cooling dehydrater；First adsorbent is connected with the reduction apparatus.

9. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 8, it is characterised in that

The first glass physical condenser is third generation double-tee glass condenser, and the first electronic cooling dehydrater is half Conductor refrigerator, first adsorbent are silica gel, activated alumina or activated carbon.

10. there is the nitrogen content testing equipment of multistage purification mechanism as claimed in claim 5, it is characterised in that

5th absorber is sulfur dioxide/carbon dioxide halogen absorber；6th absorber is water absorber.