CN1782702A - Gas analyzer apparatus - Google Patents
Gas analyzer apparatus Download PDFInfo
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- CN1782702A CN1782702A CN 200510125824 CN200510125824A CN1782702A CN 1782702 A CN1782702 A CN 1782702A CN 200510125824 CN200510125824 CN 200510125824 CN 200510125824 A CN200510125824 A CN 200510125824A CN 1782702 A CN1782702 A CN 1782702A
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Abstract
A gas analyzer apparatus (11) including a support tube (21) having a distal portion arranged in a flue (12) and a gas sensor (41) supported in the support tube. An air supply tube supplies cooling air into the support tube. A basal portion of the gas sensor is cooled by the cooling air.
Description
Technical field
The present invention is relevant with a kind of gas analyzing apparatus, specifically a kind of gas analyzing apparatus that set composition in the burning and gas-exhausting that flows through flue is carried out check and analysis.
Background technology
For the environment of preserving our planet, wish to reduce for example nitrous oxides concentration from the burning and gas-exhausting that the burner of internal combustion engine and combustion furnace and so on is discharged.In order to reach this requirement, the exploitation of the gas analyzing apparatus of oxides of nitrogen is quite in vogue in the check and analysis burning and gas-exhausting.The analysis result of gas analyzing apparatus is fed to the burning control of internal combustion engine and combustion furnace, to reduce the nitrous oxides concentration in the burning and gas-exhausting.
Existing gas analyzing apparatus is for inserting the card edge type gas analyzing apparatus (opening clear 63-58152 communique with reference to the Jap.P. spy) that the interior measuring point of flue comes analytic combustion gas; And the burning and gas-exhausting that the sampling spot in the flue is taken a sample is induced to the position of separating with sampling spot, and at this induction type gas analyzing apparatus that burning and gas-exhausting is performed an analysis (the real public clear 61-13964 communique of Jap.P.).
The card edge type gas analyzing apparatus has the detector (probe) of gathering the burning and gas-exhausting in the flue.Detector is the cylindrical shape with mounting flange, inserts in the hole of the gas outlet (flue) burn but stove etc., is fixed on the gas outlet by above-mentioned mounting flange.On the leading section of detector, be provided with the metal sintering filtrator of porous matter.In detector, sensor (sensor) be configured in metal sintering filtrator position adjacent on.A kind of solid electrolyte formula gas sensor of the solid electrolyte of zirconia potteries such as (zirconia) formation that utilizes is known for people.The burning and gas-exhausting that flows through gas outlet is imported in the detector by the metal sintering filtrator, and by sensor it is detected in detector.Rearward end at gas sensor is provided with binding post (terminal).Binding post is by lead and outside control device electric connection.
Gas induced formula gas analyzing apparatus comprises a gas collecting pipe, and it has leading section that forms gas inflow entrance and the rearward end that forms the gas stream outlet.Gas collecting pipe and gas outlet are connected.The leading section of gas collecting pipe is configured in the gas outlet.The solid electrolyte formula that midway the disposes gas sensor of gas collecting pipe.By the dynamic pressure of gas mobile in gas outlet, this gas flows into the inflow entrance of gas collecting pipe, contacts with solid electrolyte formula gas sensor, and gets back to gas outlet from the gas stream outlet.The detection signal of gas sensor outputs on the outside index gauge via the lead of pulling out from binding post.
In existing gas analyzing apparatus, the front-end configuration of probe and gas collecting pipe is near the center or center of gas outlet.Can avoid the influence of the eddy current that is easy to generate at the gas outlet inside surface by this configuration.The outstanding length of detector and gas collecting pipe is looked closely the diameter of gas outlet and is decided.That is, the diameter of gas outlet is bigger, and the outstanding length of detector and gas collecting pipe is longer.The diameter of gas outlet is littler on the other hand, and the outstanding length of detector and gas collecting pipe is shorter.In gas induced formula gas analyzing apparatus, only adjust the length that the gas collecting pipe inserts gas outlet, and the position that needn't change gas sensor.To this, in the card edge type gas analyzing apparatus, owing to be provided with gas sensor at the leading section of detector, thus sometimes must be corresponding to the diameter of gas outlet, with the binding post of air inclusion sensor rearward end in interior whole gas sensor arrangement in gas outlet.
For a plurality of leads are pulled out from the binding post permutation, the lead gland is installed in the rearward end of gas sensor.The lead gland can be formed by rubber-like rubber material, and it is the plectane with plurality of holes.By each hole lead is pulled out.Employed gas sensor under hot environment, its lead gland cause damage easily because of being heated.
If form the lead gland with the high material of thermotolerance (for example metal material of platinum etc., or pottery), can avoid the fire damage of lead gland.But the material price height that thermotolerance is high can make the cost of parts improve.In this case, preferably can take into account the cost requirement of parts and the requirement of the fire damage that reduces the gas sensor rearward end simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of gas analyzing apparatus, can take into account the cost requirement of parts and the requirement that reduces the fire damage of gas sensor rearward end simultaneously.
In order to achieve the above object, a kind of gas analyzing apparatus of the present invention comprises: a support tube, the interior leading section of flue with the gas communication of being disposed at; One gas sensor detects the set composition that above-mentioned gas comprised, and has the leading section of the above-mentioned leading section that is fixed in above-mentioned support tube and be disposed at the interior rearward end of above-mentioned support tube; One filtrator is installed in the above-mentioned leading section of above-mentioned support tube, has the front end face that exposes above-mentioned flue; The above-mentioned gas sensor with since the gas that passes through to be filtered of the above-mentioned front end face of above-mentioned filtrator contact.
Among the embodiment, the above-mentioned leading section of above-mentioned support tube has the filtrator support protrusion therein, and above-mentioned filtrator and strainer cover are dismountable to be installed on the sensor installation component.
The gas analyzing apparatus of other embodiment of the present invention comprises: a support tube, the interior leading section of flue with the gas communication of being disposed at; One gas sensor detects the set composition that above-mentioned gas comprised, and has the leading section of the above-mentioned leading section that is fixed in above-mentioned support tube and be disposed at the interior rearward end of above-mentioned support tube; One air supply plant is supplied to the tempering air that cools off the above-mentioned rearward end of above-mentioned gas sensor in the above-mentioned support tube.
Among the embodiment, above-mentioned air supply plant comprises air supply pipe therein, and it has the front opening that is disposed in the above-mentioned support tube, and the front opening of above-mentioned air supply pipe is emitted above-mentioned tempering air towards the above-mentioned rearward end of above-mentioned sensor.
Therein among the embodiment, gas analyzing apparatus further comprises a connecting pipe, be contained in above-mentioned support tube, cover the above-mentioned rearward end of the above-mentioned front end and the above-mentioned gas sensor of above-mentioned air supply pipe, above-mentioned connecting pipe comprises front end and rear end, and above-mentioned connecting pipe has one at least and is formed near the locational air entrance hole in its rear end.
Among the embodiment, the above-mentioned gas connecting pipe has one at least and is formed on and the corresponding locational air leadout hole of the above-mentioned rearward end of above-mentioned gas sensor therein.
Therein among the embodiment, the above-mentioned leading section of above-mentioned gas sensor is the front bulkhead that is screwed together in above-mentioned support tube from the inboard, above-mentioned connecting pipe is accommodated one one of the above-mentioned gas sensor or all, the lock structure that above-mentioned connecting pipe and above-mentioned gas sensor one are rotated.
Among the embodiment, above-mentioned lock structure comprises therein: the sensor bolt that is formed at the sensor outside; And be formed on above-mentioned connecting pipe and be entrenched in inserted structure on the sensor bolt.
Among the embodiment, gas analyzing apparatus further comprises the sensor installation component of the above-mentioned front end that is removably installed in above-mentioned support tube therein, and the above-mentioned gas sensor is removably installed on the sensor installation component.
Among the embodiment, the above-mentioned leading section of above-mentioned support tube comprises openend therein, and the sensor installation component is removably installed in the above-mentioned openend of above-mentioned support tube.
Therein among the embodiment, the sensor installation component has front end, and be formed with at this front end and be used for sucking the suction inlet of above-mentioned gas from above-mentioned gas outlet, the above-mentioned gas analytical equipment further comprises the lid that is removably installed on the sensor installation component, when above-mentioned lid is given prominence to laterally from the above-mentioned front end of the sensor installation component, and comprise a wall, be configured in the position that more is positioned at the upstream of above-mentioned gas stream than above-mentioned suction inlet.
Therein among the embodiment, above-mentioned lid comprises the outer receptacle portion that is embedded in the sensor installation component, on above-mentioned receptacle portion and the sensor installation component, be provided with lock structure, can adjust installation site corresponding to the above-mentioned lid of the sensor installation component.
Among the embodiment, above-mentioned lock structure comprises therein: first hole that is formed on above-mentioned receptacle portion; Be formed on a plurality of second holes of the sensor installation component; Be stuck body, under the state that above-mentioned receptacle portion is supported by the sensor installation component, one second hole of selecting by the above-mentioned hole of above-mentioned receptacle portion and among above-mentioned a plurality of second holes is supported and is engaged with above-mentioned receptacle portion.
Among the embodiment, above-mentioned a plurality of second holes are in the outside of the sensor installation portion therein, with set interval be formed on the sensor installation portion around.
Therein among the embodiment, above-mentionedly be stuck the outside that body does not protrude in above-mentioned receptacle portion.
Description of drawings
Fig. 1 is the cut-open view of the gas analyzing apparatus of first embodiment of the invention.
Fig. 2 is the view sub-anatomy of the gas analyzing apparatus of Fig. 1.
Fig. 3 is the three-dimensional exploded view of the gas analyzing apparatus of Fig. 1.
Fig. 4 is the planimetric map of the gas analyzing apparatus of Fig. 1.
Fig. 5 is the stereographic map of lead gland of the gas analyzing apparatus of Fig. 1.
Fig. 6 a, 6b are respectively phantom view, the view sub-anatomy of the gas analyzing apparatus of the second embodiment of the present invention.
Fig. 7 is the phantom view of the gas analyzing apparatus of the third embodiment of the present invention.
Fig. 8 is the cut-open view along the 8-8 line of the gas analyzing apparatus of Fig. 7.
Fig. 9 is the adapter of gas analyzing apparatus of Fig. 7 and the three-dimensional exploded view of over cap
Figure 10 is the part stereographic map of the gas analyzing apparatus of Fig. 7.
Figure 11 changes the stereographic map of example for terminal box.
Embodiment
With reference to Fig. 1～Fig. 5, the gas analyzing apparatus of first embodiment of the invention is described.The gas analyzing apparatus 11 of first embodiment is installed on the gas outlet of burner of engine, boiler, industrial furnace etc., and the set composition of the oxygen that comprises in the burning and gas-exhausting (determined gas) of gas outlet or oxides of nitrogen etc. is flow through in check and analysis.Gas analyzing apparatus 11 is a card edge type, comprises near the gas sensor of measuring point that is configured in the gas outlet.
As shown in Figure 1, gas analyzing apparatus 11 comprises the set composition in the burning and gas-exhausting that detection flows and sends the sender unit 11a of detection signal in gas outlet 12, and the analyzer 11b that is electrically connected at sender unit 11a.Analyzer 11b is arranged on the outside of gas outlet 12.Gas outlet 12 has the receiving basin 13 that sender unit 11a is installed.Receiving basin 13 has the outer end that forms flange 14.Sender unit 11a is supported by receiving basin 13, and is fixed on the flange 14.The flue that is exposed in the gas outlet 12 of the sender unit 11a that is being fixed.
11a describes at sender unit.Sender unit 11a has support tube 21, and support tube 21 has the rear end that forms flange 22.Support tube 21 inserts in the receiving basin 13.Bolt 23 is connected the flange 22 of support tube 21 and the flange 14 of receiving basin 13 with nut 24.Between two flanges 14,22, dispose seal S, be used for preventing that burning gases are from leaking between support tube 21 and the receiving basin 13.The head of bolt 23 is positioned at flange 14 1 sides, and the male screw portion 23a of bolt 23 is outstanding from the outer face of nut 24 in flange 22 1 sides.
Describe at support tube 21.Support tube 21 has the front bulkhead 31 that exposes flue.On front bulkhead 31, mark off and accommodate road 32, be used for accommodating the also leading section of fixed gas sensor 41.On the inner peripheral surface of accommodating road 32, form box thread 33.Inside surface from front bulkhead 31 in accommodating road 32 partly forms box thread portion 33 till the set degree of depth.On the front bulkhead 31 of support tube 21, form the access 34 that extends into the L font.Access 34 is communicated with the inner space of support tube 21 and accommodates road 32.
The ringwise filtrator that support tube 21 is included in the front end formation of front bulkhead 31 supports with projection 35.The filtrator 36 of dustproof usefulness is fixed on filtrator and supports the front end of using projection 35.Filtrator 36 is that the powder by sintering metal is made.Filtrator 36 such as be cup-shaped, its edge is fixed by being connected to the front end face that supports with protruding 35.
Describe at gas sensor 41.Gas sensor 41 comprises the tubular sensor outer housing 42 that forms sensor nut 43.In sensor outer housing 42, ratio sensor nut 43 more front form male screw portion 44.In the outside of sensor outer housing 42, than male screw portion 44 more front form a plurality of gas entrance holes 45.This gas entrance hole 45 with set interval be formed on sensor outer housing 42 around.Gas sensor 41, the leading section of its sensor outer housing 42 are contained in accommodates in the road 32, and the male screw portion 44 and the box thread portion 33 of sensor outer housing 42 screw togather, and are fixed on whereby on the front bulkhead 31.The mobile meeting of the gas sensor 41 forward end directions that are accompanied by the fastening of male screw portion 44 and box thread portion 33 and cause is restricted because of the inside surface that sensor bolt 43 is connected to front bulkhead 31.
Sensor outer housing 42 is accommodated the tabular or bar-shaped high temperature that is formed by the oxygen-ion conductive solid electrolyte and is made ejector half sensor element (diagram is omitted), and accommodates the sensor heater (diagram is omitted) of heating the sensor element.
As shown in Figure 5, lead gland 47 is for having the plectane of a plurality of wire guide 47a.A plurality of wire guide 47a dispose in the form of a ring.Lead gland 47 is the elastomeric materials (for example fluororubber and silicon rubber) with elasticity, thermotolerance and insulativity.The quantity of wire guide 47a is identical with the radical of lead 46, and a lead 46 runs through a wire guide 47a.Lead runs through the boundling of managing 48 support wire 46.Single male joint 49 is installed in an end of a plurality of leads 46.
Describe at terminal box 51.
As Fig. 1, shown in Figure 3, sender unit 11a comprises terminal box 51.Terminal box 51 comprises near the sidewall 51a of gas outlet 12 sides and away from the sidewall 51b of gas outlet 12 sides.The upper limb of sidewall 51a and lower edge are by being connected with pair of posts (stay) 52 welding.Each pillar 52 is the L font, comprises the 52a of foot of the sidewall 51a that is fixed in terminal box 51 and the stator 52b that gives prominence to the outside from the 52a of foot.The stator 52b of pillar 52 is connected with the flange 14 of gas outlet 12 with nut 53 by bolt 23.
As shown in Figure 3, the sidewall 51a of terminal box 51 screw 55 that has medium pore 54 and be formed at a pair of circular arc in medium pore 54 outsides.Screw 55 forms symmetrically corresponding to medium pore 54.On the sidewall 51b of terminal box 51 pipe adapter 57 is installed.Air supply pipe 56 is connected in pipe adapter 57, and runs through medium pore 54 and extend in the support tube 21 (inner chamber of the connecting pipe 61 described later of saying so exactly).Air supply pipe 56 has towards the openend of the rearward end direction opening of gas sensor 41, i.e. nozzle 56a.Pipe adapter 57 is connected with the compressed air source that produces tempering air (diagram is omitted).Be supplied to the rearward end of gas sensor 41 by air supply pipe 56 tempering airs.The central authorities that nozzle 56a is configured in connecting pipe 61 length directions more are partial to the position of the rear end side of connecting pipe 61, thereby have determined the length that air supply pipe 56 stretches in connecting pipe 61.
Cable is fixed on the sidewall 51b with joint 59.The output cable 58 that is connected in analyzer 11b is used in the joint 59 leading-in terminal casees 51 by cable.Female joint 60 is installed in an end of output cable 58.Male joint 49 in female joint 60 and the terminal box 51 is connected.
As shown in Figure 3, Figure 4, terminal box 51 has two also dismountable in opposite directions lid 51c (only representing in Fig. 3).Be divided into rectangular-shaped receiving space between two lid 51c and sidewall 51a, the 51b.By pulling down two lid 51c, terminal box 51 is in open state.
Describe at connecting pipe 61.
As shown in Figure 1, connecting pipe 61 is fixed on the outside of the sidewall 51a of terminal box 51.On the rearward end outer peripheral face of connecting pipe 61, a pair of fixed component 62 is fixed by welding on the opposite position.Each fixed component 62 is the L font, and comprises fixation wall 62a, the 62b of the sidewall 51a of the outside of being fixed in connecting pipe 61 and terminal box 51 respectively.On fixation wall 62b, form screw 63.As shown in Figure 3, on the screw 55 and the screw 63 of fixation wall 62b of bolt 64 from the inboard of terminal box 51 through the sidewall 51a of terminal box 51, by connecting nut 65, connecting pipe 61 is installed on the terminal box 51.
As shown in Figure 1, when terminal box 51 was fixed in the flange 14 of receiving basin 13, the front bulkhead of the length of connecting pipe 61 by connecting pipe 61 was connected to front bulkhead 31 and determines in support tube 21.As Fig. 2, shown in Figure 3, on the front bulkhead of connecting pipe 61, form the sexangle embedded hole 66 of the sensor nut 43 that is embedded in gas sensor 41.Connecting pipe 61 is fixed in the sidewall 51a of terminal box 51, and when the stator 52b of the flange 22 of support tube 21 and terminal box 51 is fixed in the flange 14 of receiving basin 13, the rearward end of sensor outer housing 42 is housed in the connecting pipe 61, and sensor bolt 43 is entrenched in the embedded hole 66.
As Fig. 1, Fig. 2, shown in Figure 3, on the rearward end of connecting pipe 61, a plurality of air entrance holes 67 with set interval be formed on connecting pipe 61 around.In the central authorities of the length direction of connecting pipe 61 more on the position near front end, a plurality of air leadout holes 68 with set interval be formed on connecting pipe 61 around.
Position at air entrance hole 67 and air leadout hole 68 describes.In installment state shown in Figure 1, air leadout hole 68 be positioned at near the corresponding position of the rearward end of sensor 41 (lead gland 47) on, promptly than flange 22 more (inside of support tube 21) on the position near gas outlet 12.Air entrance hole 67 is positioned at the flange 22 (outside of support tube 21) on the position of gas outlet 12 than support tube 21.
As shown in Figure 1, between the outer peripheral face of the inner peripheral surface of support tube 21 and connecting pipe 61, be provided with calibration gas supplying tubing 71.The leading section of calibration gas supplying tubing 71 is communicated with access 34 by screwing togather with the front bulkhead 31 of support tube 21.As shown in Figure 4, calibration gas supplying tubing 71 in the space between the flange 22 of the sidewall 51a of terminal box 51 and support tube 21, is extended towards the side (on the left side of Fig. 4) of terminal box 51.The rearward end of calibration gas pipe arrangement 71 is connected with the calibration gas supply source (diagram is omitted) of outside.Calibration gas is supplied to by calibration gas supplying tubing 71 and access 34 from the calibration gas supply source and accommodates road 32.
In first embodiment, embedded hole 66 has the function of inserted structure.Embedded hole 66 and sensor nut 43 have the function of lock structure.The rearward end that lead gland 47 is drawn the gas sensor at position as the lead of sensor output usefulness works.Air supply pipe 56 has the function of air supply plant.
The following describes the effect of the gas analyzing apparatus 11 of first embodiment.
Correction at gas sensor describes.
Before the mensuration of burning and gas-exhausting begins, the correction of carrying out gas sensor 41 as described below.At first, supply with set calibration gas (for example oxygen) from the correcting gas supply source.Calibration gas arrives by calibration gas supply pipe 71 and access 34 and accommodates in the road 32, flow in the sensor outer housing 42 via gas entrance hole 45, contacts with sensor element in being accommodated in sensor outer housing 42.And the corresponding set voltage of calibration gas (electromotive force) produces between two electrodes of sensor element, and produces the current signal corresponding with this voltage.This current signal is supplied to analyzer 11b via lead 46, male joint 49, female joint 60 and output with cable 58.Analyzer 11b remembers current signal as reference current.Like this, the correction of gas sensor 41 finishes.
Suction at burning and gas-exhausting describes.
After correction finished, sender unit 11a inserted in the receiving basin 13, and is fixed on the gas outlet 12.The front end of the sender unit 11a that is being fixed (filtrator 36) exposes flue.The burning gases that flow through gas outlet 12 are accommodated in the road 32 via the front end face and the side inflow of filtrator 36.Burning and gas-exhausting has sucked the burning and gas-exhausting of q.s owing to all directions from filtrator 36 suck in accommodating road 32.Inflow is accommodated burning and gas-exhausting in the road 32 via in each gas entrance hole 45 flow sensor shell 42.The burning and gas-exhausting sensor element interior with being accommodated in sensor outer housing 42 that flows in this sensor outer housing 42 contacts.(for example, oxides of nitrogen the voltage of) concentration (electromotive force) produces between two electrodes of sensor element, and generates the real current signal corresponding to electromotive force corresponding to the set composition that is included in burning and gas-exhausting.Real current signal is supplied to analyzer 11b via lead 46, male joint 49, female joint 60 and output with cable 58.Analyzer 11b makes comparisons real current signal and reference current, according to the variable quantity corresponding to the real current signal of reference current, calculates the set constituent concentration in the burning and gas-exhausting.
The following describes the supply of tempering air.
When the analytic combustion exhaust, tempering air is supplied to the inside of connecting pipe 61 via pipe adapter 57, air supply pipe 56.The nozzle 56a of air supply pipe 56 is with the rearward end ejection of tempering air to gas sensor 41.The air-flow of tempering air is directed to the inside surface of connecting pipe 61 and arrives near the rearward end of gas sensor 41.By the guiding of connecting pipe 61, the air-flow of tempering air can not spread, effectively the rearward end of refrigerating gas sensor 41.
Cause the follow-up air-flow of following from the air-flow of the tempering air of nozzle 56a ejection.Enter this front from the air-flow of the tempering air of nozzle 56a ejection along connecting pipe 61, flow out the outside of connecting pipe 61 by air leadout hole 68, enter flange 22 sides along support tube 21, discharge from the gap between flange 22 and the stator 52b (terminal box 51).Because flowing of the tempering air in the connecting pipe 61, the internal pressure of the rear end side of connecting pipe 61 reduces.Along with this pressure reduces, the air in the outside of the flange 22 of support tube 21 is imported in the connecting pipe 61 by air entrance hole 67, flows to the front (promptly spraying (inject) effect) of connecting pipe 61 with tempering air.Follow air-flow to be suppressed near (particularly the inside surface) generation eddy current in the connecting pipe 61, make the air flow in the connecting pipe 61 level and smooth.Therefore, tempering air is supplied to the rearward end of gas sensor 41 effectively.
By supplying with tempering air effectively, the lead gland 47 and each lead 46 that are installed in the rearward end of gas sensor 41 are cooled off effectively.That is, flow smoothly by tempering air, the heat of lead gland 47 and each lead 46 is taken away smoothly, and the temperature that has suppressed lead gland 47 and each lead 46 rises, and avoids fire damage.
After mobile and the lead gland 47 and 46 heat interchange of each lead of tempering air, flow out to the outside of connecting pipe 61 from air leadout hole 68.Air leadout hole 68 is owing to be formed on the position corresponding with lead gland 47, and the body of gas sensor 41 (sensor outer housing 42) can not be cooled with the air-flow of air forcibly or cooling energetically.
The order that changes of gas sensor is described.At first, gas sensor 41 is pulled down from support tube 21.In detail, take off the lid 51c of terminal box 51, the male joint 49 of releasing in terminal box 51 is connected with female joint 60.Thereby bolt 64 and nut 65 pulled down remove the fixing of terminal box 51 and connecting pipe 61, thereby bolt 23 and nut 53 pulled down the fixing of the flange 22 of removing terminal box 51 and support tube 21.Hold terminal box 51, and each lead 46 that will be connected with male joint 49 is extracted from the medium pore 54 of terminal box 51.Connecting pipe 61 is rotated towards set direction.The rotation of connecting pipe 61 is conveyed to gas sensor 41 via embedded hole 66 and sensor nut 43, and connecting pipe 61 rotates integratedly with gas sensor 41.Releasing screws togather corresponding to the male screw portion 44 of female joint 33, thereby gas sensor 41 can be pulled down.Under the chimeric state of the embedded hole 66 of gas sensor 41 and connecting pipe 61, connecting pipe 61 is extracted from support tube 21.Afterwards, gas sensor 41 is extracted from connecting pipe 61.Gas sensor 41 from front bulkhead 31 accommodate road 32 when extracting, can flow in the support tubes 21 from accommodating road 32 by the hot gas that filtrator 36 suppresses in the flues.By above operation, the field-strip of gas sensor 41 finishes.
Next, the installation exercise that is installed to support tube 21 at gas sensor 41 describes.Gas sensor 41 is being installed under the situation of support tube 21, at first gas sensor 41 is installed in the front end of connecting pipe 61, promptly, make sensor nut 43 be embedded in embedded hole 66, when connecting pipe 61 was inserted from the rear end side peristome of support tube 21, what the front end of gas sensor 41 inserted front bulkhead 31 accommodated road 32.Hold connecting pipe 61, and with the gas sensor 41 reverse direction rotation when taking off with support tube 21.Like this, the revolving force of this connecting pipe 61 is passed to gas sensor 41 via embedded hole 66 and sensor nut 43, and the result is that connecting pipe 61 is with gas sensor 41 rotations.Along with male screw portion 44 and 33 engagements of box thread portion, front bulkhead 31 inside surfaces that are connected to support tube 21 by sensor nut 43 make gas sensor 41 the mobile of forward end direction be restricted.
Then, the medium pore 54 of each the lead 46 penetrating terminal case 51 that is connected with male joint 49, coupling bolt 64 and nut 65, thereby fixed terminal case 51 and connecting pipe 61.Next, coupling bolt 23 and nut 53, thereby the flange 22 of fixed terminal case 51 and support tube 21.At last, in terminal box 51, connect male joint 49 and female joint 60, load onto the lid 51c of terminal box 51, the operation that changes of gas sensor 41 finishes.
As mentioned above, changeing in the operation of gas sensor 41, connecting pipe 61 is as removing the anchor clamps of gas sensor 41 with support tube 21 fixing (screwing togather), and is fixed in as gas sensor 41 that the anchor clamps of support tube 21 work.Therefore, need not prepare to remove the fixing anchor clamps of gas sensor 41 and support tube 21 in addition.
According to first embodiment, obtain following effect.
(1) is configured in the rearward end of the front end opening of the air supply pipe 56 in the connecting pipe 61 towards gas sensor 41.The air-flow of the tempering air of emitting from front end opening arrives the rearward end of gas sensor 41 at least, and cooling is installed in lead gland 47 and each lead 46 of end thereafter, and the temperature that suppresses lead gland 47 and each lead 46 rises, and avoids its fire damage.The lead gland 47 that can use elastomeric material to make needn't be done lead gland 47 with the high expensive material of thermotolerance.Avoided the cost of parts to rise.
(2) air-flow of tempering air enters near the rearward end of gas sensor 41 in connecting pipe 61.The air communication of tempering air is crossed near the rearward end that connecting pipe 61 is directed to gas sensor 41, and the air-flow of tempering air can not spread.Therefore, can cool off effectively the rearward end of gas sensor 41.
(3) the nozzle 56a of air supply pipe 56 produces the air-flow of tempering air towards the rearward end of gas sensor 41.The air-flow of tempering air is supplied to the rearward end of gas sensor 41 effectively, cools off lead gland 47 and each lead 46 effectively.
(4) leading section of gas sensor 41 is screwed on the front bulkhead 31 of support tube 21.Connecting pipe 61 has the most length of taking in gas sensor 41.Gas sensor 41 has the outside that forms sensor nut 43.Connecting pipe 61 has the front end that forms embedded hole 66.Sensor nut 43 is embedded in embedded hole 66.When connecting pipe 61 rotations, gas sensor 41 is with connecting pipe 61 rotations.For example, rotate towards set direction, gas sensor 41 can be pulled down from support tube 21 by making connecting pipe 61.On the contrary, rotate in the opposite direction, gas sensor 41 can be installed on the support tube 21 by making connecting pipe 61.Connecting pipe 61 has the function that makes gas sensor 41 be installed on support tube 21 and pull down from support tube 21, does not need special anchor clamps.By sensor nut 43 and the fairly simple like this structure of embedded hole 66, the dismounting of gas sensor 41 and the efficient of installation exercise have been promoted.Do not need the structure of gas analyzing apparatus 11 is made complicated.
(5) air entrance hole 67 is formed on the rearward end of connecting pipe 61.By the jeting effect that flows and caused from the cooling air of the rear end forward end of connecting pipe 61, extraneous air is introduced in the connecting pipes 61 from air entrance hole 67, and flows to the front end of connecting pipe 61.Follow air-flow to be suppressed at and produce eddy current in the connecting pipe 61.Tempering air and extraneous air flow smoothly in connecting pipe 61, supply with tempering air smoothly in the rearward end of gas sensor 41.Therefore, the rearward end of gas sensor 41 (that is, lead gland 47 and lead 46) is cooled off effectively.
(6) in connecting pipe 61, corresponding to forming a plurality of air leadout holes 68 on the position of the rearward end (that is, the lead gland 47) of gas sensor 41.Near the rearward end of the air-flow refrigerating gas sensor 41 of tempering air, flow out from connecting pipe 61 by air leadout hole 68.The air-flow of tempering air is to the not cooling energetically of body (sensor outer housing 42) of gas sensor 41.The sensor element of the gas sensor 41 of not wishing to be cooled too severely can maintain set temperature by the heating of sensor heater, can detect set composition accurately.
(7) lead 46 is derived from gas sensor 41 via lead gland 47, extends along connecting pipe 61, and exports to the outside.Thereby lead 46 is to be cooled by flowing of tempering air in connecting pipe 61.
(8) the nozzle 56a of air supply pipe 56 is configured in than the central authorities of the length direction of connecting pipe 61 more on the position near the rear end.By such configuration, the air-flow of tempering air can be to the rearward end (lead gland 47) of gas sensor 41 and the evenly cooling effectively of each lead 46 of extending from rearward end.For example, as nozzle 56a during near the rearward end of gas sensor 41, lead lid 47 can be adequately cooled, and to the cooling of lead 46 and insufficient.On the other hand, as nozzle 56a during away from the rearward end of gas sensor 41, lead 46 is adequately cooled, and to the cooling of lead gland 47 and insufficient.
(9) front end of support tube 21 is equipped with the filtrator 36 of cup-shaped.The front end face and the outer peripheral face of filtrator 36 expose from flue.Burning and gas-exhausting in the gas outlet 12 sucks from all directions by the front end face and the outer peripheral face of filtrator 36.Therefore, the burning and gas-exhausting of capacity arrives the sensor element that is housed in sensor outer housing 42, has promoted the response characteristic of sensor element.
Describe at the gas analyzing apparatus 11 of second embodiment of the invention and the difference of first embodiment.In a second embodiment, mainly be that the installation constitution of gas sensor is different with first embodiment.
Shown in Fig. 6 a, in a second embodiment, support tube 21 has front opening, on this front opening, dismountable switching piece 81 is installed.On near the inner peripheral surface the front end of support tube 21, form box thread portion 82.The side that switching piece 81 has male screw portion 84 and forms flange 83.Male screw portion 84 by switching piece 81 screws togather with the box thread portion 82 of support tube 21, and switching piece 81 is fixed in support tube 21.Have identical construction with the front bulkhead 31 of the support tube 21 of first embodiment, that is, accommodate road 32, access 34, filtrator and support with projection 35 and filtrator 36 and be located on the piece 81 of transferring.When gas sensor 41 was installed on switching piece 81, the front end of gas sensor 41 is housed in accommodated in the road 32.
In the gas analyzing apparatus 11 of second embodiment, omitted the connecting pipe 61 among first embodiment.Air supply pipe 56 replaces connecting pipe 61 covering leads 46 and lead runs through pipe 48.Fixed component 62 (with reference to Fig. 3) is by the rear end of welded and installed at air supply pipe 56.Air supply pipe 56 is attached on the sidewall 51a of terminal box 51 with bolt 64 and nut 65 via fixed component 62.The nozzle 56a (front opening) of air supply pipe 56 is near the rearward end (the lead gland 47 of saying so accurately) of gas sensor 41, but this rearward end of no show, determines the length of air supply pipe 56 thus.
Be supplied in the terminal box 51 via pipe adapter 57 by the tempering air that compressed air source produced.This tempering air from the nozzle 56a outflow of air supply pipe 56, is supplied to the rearward end of gas sensor 41 via the rearward end of the medium pore 54 inflow air supply pipes 56 of terminal box 51.Because the nozzle 56a of air supply pipe 56 is towards the rearward end of gas sensor 41, tempering air flows towards the rearward end of gas sensor 41, effectively the rearward end of refrigerating gas sensor 41.
The replacing operation of gas sensor 41 then, is described.When dismounting gas sensor 41, as shown in Figure 3, at first pull down the lid 51c of terminal box 51.As shown in Figure 2, remove the male joint 49 of terminal box 51 inside and being connected of female joint 60.Pull down nut 53, remove flange 22 fixing of terminal box 51 and support tube 21.Hold terminal box 51, male joint 49 and each lead 46 are pulled out from the medium pore 54 of terminal box 51.Pull down bolt 23 and nut 24, the flange 22 of releasing support tube 21 is fixing with the flange 14 of receiving basin 13.Support tube 21 is pulled out from receiving basin 13, shown in Fig. 6 b, calibration gas supplying tubing 71 is pulled down from support tube 21.
Shown in Fig. 6 b, the piece 81 of will transferring rotates towards set direction, and switching piece 81 is pulled down from the front end of support tube 21.Gas sensor 41 is together pulled out (arrow of Fig. 6 b) from support tube 21 with switching piece 81.Whereby, lead 46, lead being run through pipe 48 and male joint 49 pulls out from support tube 21.At last,, gas sensor 41 is pulled down from switching piece 81, finished the dismounting of gas sensor 41 like this by rotating towards set direction by gas sensor 41.
Next, when gas sensor 41 is installed, the gas sensor 41 of changing usefulness is mounted to switching piece 81.Male joint 49, lead are run through pipe 48 and each lead 46 inserts from the peristome of support tube 21, the switching piece 81 that will be fixed with gas sensor 41 simultaneously is screwed together in the front opening of support tube 21.At this moment, switching piece 81 is moving of (left side of Fig. 6 b) to the inside, is restricted because the flange 83 of the piece 81 of transferring is connected to the front opening end face of support tube 21.Afterwards, the support tube 21 that gas sensor 41 is installed is inserted receiving basin 13.Then, insert, its leading section is screwed togather to the access 34 of opening in switching piece 81 inboards proofreading and correct with the peristome of gas supply pipe 71 from the rear end side of support tube 21.Opposite with above-mentioned field-strip afterwards order is carried out, and finishes the installation exercise of gas sensor 41.
According to second embodiment, can obtain following effect.
(10) gas sensor 41 is installed on the switching piece 81 that is removably mounted on support tube 21 front ends.Pull down from support tube 21 by the piece 81 of will transferring, gas sensor 41 just can be pulled down from support tube 21.That is, gas sensor 41 being installed on support tube 21 or pulling down from support tube 21 does not need to use special fixtures, and the replacing operation of gas sensor 41 is simple.
(11) front opening of air supply pipe 56 is towards the rearward end of gas sensor 41.Therefore, tempering air is delivered to the rearward end of gas sensor 41 at least, and each lead 46 in lead gland 47 and the air supply pipe 56 is cooled.The temperature that has suppressed lead gland 47 and each lead 46 rises, and has avoided its fire damage.Can use elastomeric material to make lead gland 47, needn't form lead gland 47 with the high expensive material of thermotolerance.Therefore, avoid component costs to improve.
(12) tempering air that imports from the rear end side of air supply pipe 56 flows through in the air supply pipe 56, is directed near the rearward end of gas sensor 41 to indiffusion.Therefore, the rearward end of refrigerating gas sensor 41 effectively.
The difference of the gas analyzing apparatus 11 and second embodiment of the third embodiment of the present invention is described with reference to Fig. 7 to Figure 10.The gas analyzing apparatus 11 of the 3rd embodiment has the switching piece 81 that gas sensor 41 is installed.Switching piece 81 comprises that filtrator supports with projection 35.The front end that filtrator supports with projection 35 is embedded with discoideus filtrator 36.Screw togather strainer cover 85 with medium pore 85a.Filtrator 36 exposes from the medium pore 85a of strainer cover 85.Medium pore 85a is as the suction inlet of determined gas.There is liner 86 between the flange 83 of switching piece 81 and the end face of support tube 21.Guarantee the impermeability that support tube 21 is inside and outside by liner 86.
As shown in Figure 9, on the flange 83 of switching piece 81, form the groove 83a of ring-type.A plurality of (implementing in the kenel the 3rd is eight) box thread portion 87 with uniformly-spaced be formed on flange 83 around.Box thread portion 87 is at groove 83a inner opening.A plurality of box thread portion 87 is to be made of paired box thread.In the example of Fig. 9, eight box thread portions 87 are constituted by being positioned at corresponding to four pairs of box threads on the opposite location of the axis of switching piece 81, that be made of two box thread portions 87 respectively.
Over cap 88 is installed on the switching piece 81.Over cap 88 comprises the receptacle portion 89 of ring-type and the containment wall 90 of semicircle tubular.The internal diameter of receptacle portion 89 is approximately identical or bigger with the external diameter of the flange 83 of switching piece 81.As shown in Figure 8, the opposition side on receptacle portion 89 forms a pair of connecting hole 89a.
A pair of connecting hole 89a is consistent with a pair of box thread portion 87 selected a plurality of box thread portion 87 on being formed on flange 83 respectively, thus on the outer flange 83 that is embedded in switching piece 81 of receptacle portion 89.Bolt B is extended through each connecting hole 89a of receptacle portion 89 from the outside, be bound up in the corresponding box thread portion 87, over cap 88 is installed on the switching piece 81.As shown in Figure 8, under the state of bolt B and 87 connections of box thread portion, bolt B is supported by connecting hole 89a and box thread portion 87.Particularly, the head of bolt B engages with receptacle portion 89 in connecting hole 89a.By the engaging of bolt B, over cap 88 can more or not come off with respect to 81 rotations of switching piece.
When over cap 88 was installed on the switching piece 81, the front end of containment wall 90 supported with projection 35 more outstanding than filtrator, and containment wall 90 is positioned at the position of the more upstream of determined gas than filtrator support protrusion 35.Bolt B does not protrude in the outside of receptacle portion 89.
In the 3rd embodiment, switching piece 81 works as the installation component of sensor.Box thread portion 82 is as the peristome of the leading section of support tube.Box thread portion 87 works as installation portion.Bolt B works as being stuck body.Bolt B and receptacle portion 89 work as lock structure.
According to the 3rd embodiment, can obtain following effect.
(13) switching piece 81 has the suction inlet (medium pore 85a) of the determined gas that flows in gas outlet 12.Compare with filtrator support protrusion 35, containment wall 90 is configured in the position of determined more upstream than gas.Because containment wall 90 covers determined gas flow, the determined gas that screws at containment wall 90 gently is inhaled into medium pore 85a.Gas sensor 41 is analyzed the weak determined gas of potential energy.Because gas sensor 41 is not subjected to the influence of the strong determined gas stream of potential energy, can stably analyze determined gas.
(14),, can suppress the dust that filtrator 36 flow through gas outlet 12 and stop up because the determined gas that screws at containment wall 90 gently is inhaled into medium pore 85a by the covering of containment wall 90.
(15) over cap 88 that comprises containment wall 90 can be pulled down from switching piece 81.Air-flow corresponding to determined gas can be pulled down over cap 88.For example, under the big situation of the potential energy of determined gas stream, over cap 88 is installed on the switching piece 81, the potential energy of determined gas stream is died down by containment wall 90.Under the mild situation of determined gas stream, can pull down over cap 88.Like this, can adjust the suction of determined gas.
(16) lock structure that is constituted by card extender 81 and receptacle portion 89, over cap 88 can be installed on the switching piece 81.Lock structure comprises the outer embedding of receptacle portion 89 and the flange 83 of switching piece 81, and is formed at two connecting hole 89a of receptacle portion 89 and engaging of bolt 23a.Containment wall 90 covers the determined gas stream in the flue or makes its circuitous effect as long as can play.Therefore, containment wall 90 can not pulled down from switching piece 81, needn't be completely fixed on the switching piece 81.For the connecting hole 89a of receptacle portion 89 and engaging of bolt B, just passable as long as over cap 88 is supported on the switching piece 81 tear-awayly.This engaging only depends on fastening bolt B that over cap 88 is installed on the switching piece 81 just can realize that the structure that over cap 88 is installed on the switching piece 81 is very simple.
(17) a plurality of box thread portion 87 forms with set interval on the flange 83 of switching piece 81.The a pair of connecting hole 89a of over cap 88 and selected a pair of box thread portion 87 from the right box thread portion 87 of plural number overlap, and containment wall 90 is configured in the upstream of determined gas stream.
(18) bolt B is not outstanding from the outside of receptacle portion 89.The outside of support tube 21 and over cap 88 does not have thrust fully, and gas analyzing apparatus 11 has exquisite outward appearance.And support tube 21 can insert in the receiving basin 13 smoothly.Therefore, the sender unit 11a operation that is installed to gas outlet 12 is easy to.Under the situation that bolt B is given prominence to from receptacle portion 89 outsides, outstanding bolt B is connected to receiving basin 13, and hinders the insertion of support tube 21.Or, can not run into receiving basin 13 in order to make outstanding bolt B, the insertion posture of necessary strict control support tube 21.Therefore, Tu Chu bolt B can make sender unit 11a be installed on the operating efficiency reduction of gas outlet 12.When this problem diminishes at the interval of the outside of the inside surface of receiving basin 13 and support tube 21 clearly.
(19) on the filtrator of switching piece 81 supports with projection 35, filtrator 36 and strainer cover 85 are installed.Strainer cover 85 can be pulled down.Therefore, the installation of filtrator 36, replacing and cleaning are more prone to.
First to the 3rd embodiment can do following change.
As shown in figure 11, in the terminal box 51 of first and second embodiment, the variable more discoideus fixed component 91 of sidewall 51a.On fixed component 91, form medium pore 54 and screw 55.Around medium pore 54 and screw 55, a plurality of screws 92 are formed on the circumferencial direction of fixed component 91 with set interval.Each screw 92 extends to the peripheral direction of fixed component 91.According to this structure, can omit pillar 52, reduce number of components.
In first embodiment, the outside of connecting pipe 61 forms hexagonal (hexagon)nut 93 (double dot dash line of Fig. 3).Hold hexagonal (hexagon)nut 93 and the pipe 61 that is rotatably connected, the dismounting of connecting pipe 61 and installation become easily and are simple like this.
In first embodiment, in support tube 21, though whole gas sensor 41 is covered by connecting pipe 61, the some of gas sensor 41 (rearward end at least) is housed in the connecting pipe 61 also passable.Form lock structure at the inside surface of toward each other connecting pipe 61 and the outside of gas sensor 41.Inside surface at connecting pipe 61 forms embedded hole 66, forms sensor nut 43 in the outside of gas sensor 41.Embedded hole 66 can not be formed on the front end of connecting pipe 61.For example, can be formed on the body of connecting pipe 61.
In first embodiment, though the nozzle 56a of air supply pipe 56 is positioned at than central authorities more on the position near the rear end at the length direction of connecting pipe 61, the length that also can adjust connecting pipe 61 changes the position of nozzle 56a with this.For example, make air supply pipe 56 elongated and nozzle 56a is disposed at the middle position of connecting pipe 61 or, nozzle 56a is disposed at than the middle position of connecting pipe 61 more near the position of rear end thereby also air supply pipe 56 can be shortened near the position of front end.Air supply pipe 56 can be disposed in the connecting pipe 61 yet, tempering air only is supplied in the terminal box 51.The air that is supplied to terminal box 51 enters along connecting pipe 61, supplies with towards the rearward end of gas sensor 41.
In first embodiment, air entrance hole 67 also can only be provided with one.
In first embodiment, air leadout hole 68 also can only be provided with one.
In first embodiment, each air entrance hole 67 is (with reference to the Fig. 3) that form with the form that becomes a row ground to align with a corresponding air leadout hole 68, and each air entrance hole 67 is also passable with the form formation that misplaces each other with corresponding air leadout hole 68.For example a plurality of air entrance holes 67 form on the position of the peripheral direction 90 degree dislocation of connecting pipe 61 with respect to a plurality of air leadout holes 68.According to this structure, the rearward end of gas sensor 41 (lead gland 47) and each lead 46 can be cooled off effectively.
In the 3rd embodiment, the quantity of the connecting hole 89a of receptacle portion 89 is not limited to two, also can more than one or three and three.
In the 3rd embodiment, also bolt B can be altered to the body that is stuck as latch, box thread portion 87 is altered to simple hole.This latch and receptacle portion 89 constitute lock structure.Complex root lead 46 also can be the electric wire that is coated by heat resistance fiber.The electric wire or the nickel pottery electric wire that for example can use glass fibre to coat.
Though lead gland 47 is formed by the material with elasticity, thermotolerance and insulativity as fluororubber or silicon rubber, also can form by the ceramic fiber or the glass fibre of high-temperature refractory fiber with thermotolerance and insulativity, form also passable by mica.
In first embodiment, on front bulkhead 31, also can fix or the identical wall of containment wall 90 of integrally formed and the 3rd embodiment.According to this structure, can stably analyze determined gas, suppress the obstruction of the filtrator 36 that dust caused.
Claims (15)
1. a gas analyzing apparatus (11) comprising:
One support tube (21), the interior leading section (36) of flue (12) with the gas communication of being configured in;
One gas sensor (41) detects the set composition that above-mentioned gas comprised, and has the leading section of the above-mentioned leading section that is fixed on above-mentioned support tube and be configured in the interior rearward end (47) of above-mentioned support tube;
One filtrator (36) is installed in the above-mentioned leading section of above-mentioned support tube, has the front end face that exposes above-mentioned flue;
The above-mentioned gas sensor with since the gas that passes through to be filtered of the above-mentioned front end face of above-mentioned filtrator contact.
2. gas analyzing apparatus as claimed in claim 1 is characterized in that, the above-mentioned leading section of above-mentioned support tube has filtrator to be supported with projection (35), and above-mentioned filtrator (36) and strainer cover (85) are removably mounted on the sensor installation component.
3. a gas analyzing apparatus (11) comprising:
One support tube (21), the interior leading section (36) of flue (12) with the gas communication of being configured in;
One gas sensor (41) detects the set composition that above-mentioned gas comprised, and has the leading section of the above-mentioned leading section that is fixed on above-mentioned support tube and be configured in the interior rearward end (47) of above-mentioned support tube;
One air supply plant (56,57) is supplied to the tempering air that cools off the above-mentioned rearward end of above-mentioned gas sensor in the above-mentioned support tube.
4. gas analyzing apparatus as claimed in claim 3, it is characterized in that, above-mentioned air supply plant comprises air supply pipe (56), it has the front opening (56a) that is disposed in the above-mentioned support tube, and the front opening of above-mentioned air supply pipe is emitted above-mentioned tempering air towards the above-mentioned rearward end of above-mentioned gas sensor.
5. gas analyzing apparatus as claimed in claim 4, it is characterized in that, also comprise a connecting pipe (61), be housed in above-mentioned support tube, cover the above-mentioned rearward end of the above-mentioned front end and the above-mentioned gas sensor of above-mentioned air supply pipe, above-mentioned connecting pipe comprises front end and rear end, and above-mentioned connecting pipe has one at least and is formed near the locational air entrance hole in its rear end (67).
6. gas analyzing apparatus as claimed in claim 5 is characterized in that, the above-mentioned gas connecting pipe has one at least and is formed on and the corresponding locational air leadout hole of the above-mentioned rearward end of above-mentioned gas sensor (68).
7. gas analyzing apparatus as claimed in claim 5, it is characterized in that, the above-mentioned leading section of above-mentioned gas sensor is the front bulkhead (31) that is screwed together in above-mentioned support tube from the inboard, above-mentioned connecting pipe is accommodated one one of the above-mentioned gas sensor or all, but above-mentioned connecting pipe comprises the mutual lock structure (43,66) that engages, makes above-mentioned connecting pipe and above-mentioned gas sensor one to rotate with the above-mentioned gas sensor.
8. gas analyzing apparatus as claimed in claim 7 is characterized in that, above-mentioned lock structure comprises: the sensor bolt (43) that is formed on the sensor outside; And be formed on above-mentioned connecting pipe and be entrenched in inserted structure (66) on the sensor bolt.
9. as each described gas analyzing apparatus in the claim 3 to 8, it is characterized in that, also comprise the sensor installation component (81) of the above-mentioned front end (82) that is removably installed in above-mentioned support tube, the above-mentioned gas sensor is removably mounted on the sensor installation component.
10. gas analyzing apparatus as claimed in claim 9 is characterized in that, the above-mentioned leading section of above-mentioned support tube (21) comprises openend (82), and the sensor installation component is removably mounted on the above-mentioned openend (82) of above-mentioned support tube.
11. gas analyzing apparatus as claimed in claim 10, it is characterized in that, the sensor installation component has front end, and be formed with at front end and be used for sucking the suction inlet (35) of above-mentioned gas from above-mentioned gas outlet, the above-mentioned gas analytical equipment further comprises the lid (88) that is removably installed on the sensor installation component, when above-mentioned lid is given prominence to laterally from the above-mentioned front end of the sensor installation component, and comprise a wall (90), be configured in the position that more is positioned at the upstream of above-mentioned gas stream than above-mentioned suction inlet.
12. gas analyzing apparatus as claimed in claim 11, it is characterized in that, above-mentioned lid comprises the outer receptacle portion (89) that is embedded in the sensor installation component, on above-mentioned receptacle portion and the sensor installation component, be provided with lock structure (87,89a, B), can adjust installation site corresponding to the above-mentioned lid of the sensor installation component.
13. gas analyzing apparatus as claimed in claim 12 is characterized in that, above-mentioned lock structure comprises:
One first hole (89a) is formed at above-mentioned receptacle portion;
A plurality of second holes (87) are formed at the sensor installation component;
Be stuck body (B), under the state that above-mentioned receptacle portion is supported by the sensor installation component, by being supported and engage in selected one second hole among the above-mentioned hole of above-mentioned receptacle portion and above-mentioned a plurality of second hole with above-mentioned receptacle portion.
14. gas analyzing apparatus as claimed in claim 13 is characterized in that, above-mentioned a plurality of second holes are in the outside of the sensor installation portion, with set interval be formed on the sensor installation portion around.
15. gas analyzing apparatus as claimed in claim 13 is characterized in that, above-mentionedly is stuck the outside that body does not protrude in above-mentioned receptacle portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004349567 | 2004-12-02 | ||
| JP2004349567 | 2004-12-02 | ||
| JP2005075652 | 2005-03-16 |
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| Publication Number | Publication Date |
|---|---|
| CN1782702A true CN1782702A (en) | 2006-06-07 |
| CN100507544C CN100507544C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101258242A Expired - Fee Related CN100507544C (en) | 2004-12-02 | 2005-11-30 | Gas analyzer apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900702A (en) * | 2009-05-29 | 2010-12-01 | 株式会社堀场制作所 | Exhaust gas analyzer and probe unit |
| CN103376306A (en) * | 2012-04-13 | 2013-10-30 | 株式会社堀场制作所 | Exhaust gas analyzer and probe unit |
-
2005
- 2005-11-30 CN CNB2005101258242A patent/CN100507544C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900702A (en) * | 2009-05-29 | 2010-12-01 | 株式会社堀场制作所 | Exhaust gas analyzer and probe unit |
| CN103376306A (en) * | 2012-04-13 | 2013-10-30 | 株式会社堀场制作所 | Exhaust gas analyzer and probe unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100507544C (en) | 2009-07-01 |
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