CN205785976U - Current limliting reflow type gas sampling depurator - Google Patents

Abstract

This utility model relates to gas sampling assembly, especially relates to a kind of current limliting reflow type gas sampling depurator.This current limliting reflow type gas sampling depurator, including: sampling probe, the first capillary flow restrictor and condensation separation purifier；Sampling probe, the first capillary flow restrictor and condensation separation purifier are sequentially communicated；First capillary flow restrictor flows into the flow of the fluid in condensation separation purifier for limited samples probe.The flow of gas sample can be limited by capillary flow restrictor, reduce gas sample discharge, decrease the waste of resource；The objectionable impurities in gas sample can effectively be removed by the condensation separation purifier installed, and reduces the pollution of environment, reduces the damage to the system of analysis simultaneously.It is applicable to the various gas sample acquisition purified treatment such as raw gas.

Description

Current limliting reflow type gas sampling depurator

Technical field

This utility model relates to gas sampling assembly, especially relates to a kind of current limliting reflow type gas sampling depurator.

Background technology

Gas on-line analysis system is widely used at chemical industry, for production process and the control of chemical industry, improves Product quality, operation is instructed to provide important means and foundation.The component content of various mixing gas sample is analyzed in on-line analysis continuously And list and one-component content, make production control more accurate, it is achieved the optimization of production and maximizing the benefits.

But the gas sample majority taked is to carry out in the environment of higher temperatures and higher pressure, and a lot of course of reaction is all deposited Contain fine dust particles or containing phenomenons such as condensable Organic substances in gaseous fluid, cause blocking and the damage of sampling apparatus, And in sampling process, owing to on-line analysis point is many, sampling flow big, occur in that cost increases and the phenomenon of the wasting of resources, Such as, at a ripe methanol or Ammonia Production line, being distributed about 50 to 100 gas on-line analysis points, year, total gas sample disappeared Consumption cost is more than 2,000,000 yuan, and the raw cost for wastewater treatment of gross annual output is more than 500,000 yuan, and causes substantial amounts of toxic and harmful to be arranged Put.

Utility model content

The purpose of this utility model is to provide a kind of current limliting reflow type gas sampling depurator, to solve in prior art The discharge capacity of the gas sampling existed is big, containing large particulate matter in gas sample, causes the technology that the wasting of resources and analytical equipment damage Problem.

The current limliting reflow type gas sampling depurator that this utility model provides, including: sampling probe, the first capillary tube current limliting Device and condensation separation purifier；Sampling probe, the first capillary flow restrictor and condensation separation purifier are sequentially communicated；The One capillary flow restrictor flows into the flow of the fluid in condensation separation purifier for limited samples probe.

Further, current limliting reflow type gas sampling depurator also includes the second capillary flow restrictor and return channel；Sampling is visited Head is connected by return channel and the first capillary flow restrictor, and the port of export of return channel is also by the second capillary flow restrictor and condensation Separating purifying device connects.

Further, return channel is return filter；Return filter includes reflux vessel and filter element；Filter element is arranged on backflow The port of container, the lower end of filter element is empty.

Further, current limliting reflow type gas sampling depurator, also include expanding condensing tube；First capillary flow restrictor and Two capillary flow restrictors connect with expanding condensing tube, expand condensing tube and connect with condensation separation purifier.

Further, condensation separation purifier include gas-liquid separator, cooling separator, reflux splitter, essence adsorber, Ceramic filter, relief valve, surge tank, by-pass gauge and multiple automatic drain device；Gas-liquid separator, cooling separator, return Stream separator, ceramic filter and essence adsorber are sequentially communicated；Relief valve it is additionally provided with on gas-liquid separator；Expand condensing tube Connect with gas-liquid separator；By-pass gauge it is additionally provided with between gas-liquid separator and cooling separator；Gas-liquid separator and cold But separator is all communicated with an automatic drain device；Ceramic filter also connects with surge tank.

Further, condensation separation purifier also includes self-cleaning filter, expands condensing tube and passes through self-cleaning filter Connect with gas-liquid separator.

Further, self-cleaning filter includes gas-liquid mixed instrument, distributed washing instrument, backflow separator, overflow pipe and water Tube sealing；The outlet of gas-liquid mixed instrument and the inlet communication of distributed washing instrument；The outlet of distributed washing instrument and backflow separator Connection；The outlet of backflow separator connects with gas-liquid separator；The upper end of overflow pipe connects with distributed washing instrument, and overflow pipe It is arranged in parallel with distributed washing instrument；The outside of overflow pipe be cased with close water sealing (sealing water) pipe, overflow pipe lower ending opening and water seal There is gap the bottom of pipe；The upper outlet connected with wastewater collection pipe it is provided with on the sidewall of water sealing (sealing water) pipe, and standby with low pressurized water seal Lower outlet with mouth connection.

Further, distributed washing instrument includes sluicing pipe and multiple distribution grid；Sluicing pipe is the body of closed at both ends, and washes The upper end washing pipe connects with backflow separator, and its lower end connects with gas-liquid mixed instrument；Multiple distribution grids, from top to bottom, parallel Every be arranged in sluicing pipe.

Further, condensation separation purifier also includes washing oil scrubber, and reflux splitter is by scrubber and pottery mistake Filter connects.

Further, current limliting reflow type gas sampling depurator also includes cyclone separator and secondary sampling probe, and secondary is adopted One end of sample probe is located in the overfall of cyclone separator, the other end and the connection of the first capillary flow restrictor；Sampling probe Connect with the charging aperture of cyclone separator；The underflow opening of cyclone separator is for original gas pipeline connection.

The current limliting reflow type gas sampling depurator that this utility model provides, uses the first capillary flow restrictor can limit gas The flow of sample, reduces gas sample discharge, decreases the waste of resource；The condensation separation purifier installed can effectively go degasification Objectionable impurities in sample, reduces the pollution of environment, reduces the damage to the system of analysis simultaneously.It is applicable to raw gas etc. various Gas sample acquisition purified treatment.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, below by right In detailed description of the invention or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be embodiments more of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

The current limliting reflow type gas sampling depurator overall schematic that Fig. 1 provides for this utility model embodiment；

The signal of the return filter of the current limliting reflow type gas sampling depurator that Fig. 2 this utility model embodiment provides Figure；

The signal of the self-cleaning filter of the current limliting reflow type gas sampling depurator that Fig. 3 this utility model embodiment provides Figure；

The signal of the cyclone separator of the current limliting reflow type gas sampling depurator that Fig. 4 this utility model embodiment provides Figure.

Reference:

11-the first capillary flow restrictor；12 second capillary flow restrictors；

13-three capillary current limiter；

211-the first automatic valve；212-the second automatic valve；213-the 3rd automatic valve；

214-the 4th automatic valve；

31-wastewater collection pipe；32-gas sample collecting pipe；

4-gas pipeline；5-sampling probe；51-level sampling probe；

6-return channel；61-return filter；62-cyclone separator；

611-filter element 612-reflux vessel

7-expands condensing tube；

8-condensation separation purifier；81-gas-liquid separator；82-automatic drain device；

83-cooling separator；84-essence adsorber；85-ceramic filter.

86-by-pass gauge；87-relief valve；88-reflux splitter

89-surge tank；

9-self-cleaning filter；91-gas-liquid mixed instrument；92-distributed washing instrument；

93-refluxes separator；94-overflow pipe；95-water sealing (sealing water) pipe；

The standby mouth of the low pressurized water seal of 96-；921-distribution grid；

A-flusher；B-purges collection device；C-gas sample collection device

D-wastewater treatment equipment.

Detailed description of the invention

Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described Embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality Novel protected scope.

In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term Directly ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, be only Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Language concrete meaning in this utility model.

The current limliting reflow type gas sampling depurator overall schematic that Fig. 1 provides for this utility model embodiment, such as Fig. 1 institute Show, the current limliting reflow type gas sampling depurator that the present embodiment provides, including: sampling probe the 5, first capillary flow restrictor 11 and Condensation separation purifier 8；Sampling probe the 5, first capillary flow restrictor 11 and condensation separation purifier 8 are sequentially communicated；The One capillary flow restrictor 11 is used for limited samples probe 5 and flows into the flow of the fluid in condensation separation purifier 8.

Wherein, the size range of the internal diameter of the capillary tube selected by the first capillary flow restrictor 11 is 0.1-3mm, external diameter Size range is 1-4mm, and the size range of length is 50-4000mm.With specific reference to system pressure and dust granules in gas sample Size determines.Capillary tube is the small-bore pipe of regulation, by relying on flow resistance to produce pressure drop along its length, controls The flow of gas sample, thus serve the effect of current limliting, additionally, capillary tube also has expansion cooling and the effect of voltage stabilizing.

Sampling probe 5 extends in gas pipeline 4 by the outer wall port of gas pipeline 4, the bore of sampling probe 5 by The diameter of gas pipeline 4 determines, the size range of sampling probe 5 bore is 15-108mm, is 1/ of diameter at gas pipeline 4 Between 10-1/5.Sampling probe 5 extends to the optional position of gas pipeline 4, it is preferred that the distance extended is gas pipeline Between the 1/4-1/3 of the internal diameter of 4 so that it is in sampling process can refluxing portion particulate matter, and gas sample is representative.

The purpose of condensation separation purifier 8 is that the impurity substances in gas sample is separated and filtered, then passes through waste water The process of processing means D, reduces the discharge of waste water.Meanwhile, make gas sample cleanliness factor meet the requirement of analysis system, alleviate or keep away Exempt from it is caused damage and destroys.

The current limliting reflow type gas sampling depurator that the present embodiment provides, for the gas sample containing low dust, uses first mao Capillary flow restrictors 11, can limit the flow of gas sample, thus solve the problem that gas sample discharge capacity is big, meanwhile, and the valency of capillary tube Lattice are cheap, therefore, decrease the waste of resource and reduce cost；The condensation separation purifier 8 simultaneously installed can be effective Removal gas sample in objectionable impurities, reduce the pollution of environment, it addition, reduce to analyze system damage.

On the basis of above-described embodiment, further, the current limliting reflow type gas sampling depurator that the present embodiment provides is also Including the second capillary flow restrictor 12 and return channel 6；Sampling probe 5 is connected with the first capillary flow restrictor 11 by return channel 6, The port of export of return channel 6 connects with condensation separation purifier 8 also by the second capillary flow restrictor 12.

Being shaped as of return channel 6 is multiple, such as, spherical or cylindrical, it is considered to the area of dissipation of spherical return channel 6 is big, Particulate matter backflow resistance is little, it is preferred that select spherical return channel, it can control the flow of gas sampling, makes in gas sample low solidifying Point impurity constantly condenses after gathering in return channel 6, returns to gas pipeline 4, decreases the impurity that gas sample is taken out of, alleviates pre- Processing system processes the load of gas sample.

The current limliting reflow type gas sampling depurator that the present embodiment provides also includes three capillary current limiter 13 and rinses Device A；Flusher A is connected with the port of export of return channel 6 by three capillary current limiter 13, can carry out return channel 6 Rinse, it is ensured that return channel 6 clean.

The current limliting reflow type gas sampling depurator that the present embodiment provides, uses return channel 6 can make part in gas sample Impurity is back in gas pipeline 4, decreases the input of gas flow, makes discharge capacity reduce, the second capillary flow restrictor 12 Arranging and can solve under device is in low voltage situations, the first capillary flow restrictor 11 can not meet the demand of device, needs the The auxiliary of two capillary flow restrictors 12, both carry gas sample jointly, to meet the demand of device.

As it is shown in figure 1, on the basis of above-described embodiment, further, current limliting reflow type gas sampling depurator also wraps Include expansion condensing tube 7；First capillary flow restrictor 11 connects with expanding condensing tube 7 with the second capillary flow restrictor 12, expands cold Solidifying pipe 7 connects with condensation separation purifier 8 again.

The effect expanding condensing tube 7 is that gas sample condensation is condensed into liquid by portion gas, takes away the heat of part, makes gas The temperature of sample reduces, and expanding condensing tube 7 can play the effect of buffering with the speed of mitigation of gases flow simultaneously.

On the basis of above-described embodiment, further, current limliting reflow type gas sampling depurator also includes controlling of sampling Device and relevant control valve, it is logical that the panel of gas sample controller has respectively start and stop, constant temperature, blowback, flushing and low pressure Five functions in road.

Wherein, as it is shown in figure 1, the first automatic valve 211 is arranged between return channel 6 and the first capillary flow restrictor 11, and It is connected with purging collection device B；Second automatic valve 212 is arranged between return channel 6 and the second capillary flow restrictor 12；First mao Capillary flow restrictors 11 connects with the 3rd automatic valve 213 with the second capillary flow restrictor 12, and the 3rd automatic valve 213 is cold with expansion again Solidifying pipe 7 connects；4th automatic valve 214 is arranged on three capillary current limiter 13 and connects with flusher A；Gas sample controller is respectively Being connected with each automatic valve and the first capillary tube current limliting, wherein gas sample controller can control the temperature of the first capillary flow restrictor 11 Degree.

In gas sampling normal processes, gas sample sequentially passes through first automatic valve the 211, first capillary flow restrictor 11 and the 3rd Automatic valve 213, enters and expands in condensing tube 7, carry out gas sample circulation, and wherein the first capillary flow restrictor 11 serves control flow Effect.

In Regulation of Constant Temperature, the first capillary flow restrictor 11 connects temperature incubation function, can make the first capillary tube current limliting Device 11 is heated to the temperature specified, and stops heating, makes capillary tube be in the state of constant temperature all the time, thus prevent gas sample from condensing With the phenomenon of blocking, it is also prevented from gas sample generation chemical reaction simultaneously.

In blowback program process, according to presetting cycle or interval time, carry out regularly automatic back blow, open anti- Fetching sequence, gas sample is automatic by second automatic valve the 212, second capillary flow restrictor 12, three capillary current limiter 13 and first Valve 211, arrives the floss hole of purging collection device B, it is ensured that gas sample circulation is smooth and easy, does not blocks.

In backwashing procedures, presetting cycle or interval time, start backwashing function, flushing water is through four selfs Dynamic valve 214 and three capillary current limiter 13, be carried out return channel 6；When system air pressure reaches setting value, open low pressure Passage, the second automatic valve 212 starts, and gas sample by the first capillary flow restrictor 11 and the second capillary flow restrictor 12, is entered respectively Entering to expand condensing tube 7, this function serves protective effect to whole current limliting reflow type gas sampling depurator.

On the basis of above-described embodiment, further, condensation separation purifier 8 includes gas-liquid separator 81, cooling Separator 83, reflux splitter 88, essence adsorber 84, ceramic filter 85, relief valve 87, surge tank 89, by-pass gauge 86 With multiple automatic drain devices 82；Gas-liquid separator 81, cooling separator 83, reflux splitter 88, ceramic filter 85 and essence Adsorber 84 is sequentially communicated；It is additionally provided with relief valve on gas-liquid separator 81；First capillary flow restrictor 11 and gas-liquid separator 81 connections；By-pass gauge 86 it is additionally provided with between gas-liquid separator 81 and cooling separator 83；Gas-liquid separator 81 and cooling Separator 83 is all communicated with an automatic drain device 82；Ceramic filter 85 also connects with surge tank 89.

Wherein, the type of gas-liquid separator 81 is multiple, such as gravitational settling gas-liquid separator, split flow gas-liquid separator or Person's centrifugal gas-liquid separator, it is considered to cost of manufacture and simple in construction, preferably gravitational settling gas-liquid separator, simultaneously in order to change The shortcoming that its separation efficiency kind is low, the inner chamber at gas-liquid separator 81 is provided with filter element.The effect of gas-liquid separator 81 is water The gas-liquid separation of colloidal sol shape is opened, and makes gas sample enter cooling separator 83, and the liquid of separation is discharged to give up by automatic drain device 82 In water treatment facilities D.

It addition, arrange by-pass gauge 86 can strengthen bypass flow, improve and analyze response speed, monitor gas sample simultaneously Changes in flow rate, after system exceedes the pressure of regulation, relief valve 87 starts pressure release, and part gas sample is carried by gas sample collecting pipe 32 In gas sample collection device C.

Cooling separator 83 is the temperature by reducing gas sample, makes the oil cooling of the vaporous water in gas sample and gaseous state be converted into Liquid condition, thus play centrifugation, equally, the liquid of separation is discharged to wastewater treatment equipment D by automatic drain device 82 In.

Reflux splitter 88 is segregation apparatus, is that make in gas sample is cold in order to make gas sample after by reflux splitter 88 Lime set body, is back to after gathering in cooling separator 83.

Ceramic filter 85 is the device that a kind of essence filters, can be to the little granule dust in gas sample and the chemical combination of macromole Thing filters, and connects with surge tank 89, play cushioning effect intrinsic pressure to device, and can discharge waste liquid timely.

It is provided with the absorbent such as absorbent cotton in essence adsorber 84, the Hydrocarbon of residual is adsorbed.

The current limliting reflow type gas sampling depurator that the present embodiment provides, low for dust content, tar content is low, humidity High gas, wherein, the gas-liquid separator 81 of setting, cooling separator 83, ceramic filter 85 and essence adsorber 84 can be with pins Different impurities in gas sample being separated and discharged, makes the high purification of gas sample, the analysis to gas sample causes minor impact； It is provided with relief valve 87 and by-pass gauge 86 simultaneously, makes staff that traffic conditions to be had and clearly monitor, timely many Remaining gas sample is discharged in gas sample collection device C, makes device the safest；And this device is provided with wastewater treatment equipment D, this Expellant gas can be processed by sample timely, reduces the discharge of waste water, makes device more environmental protection.

The signal of the return filter of the current limliting reflow type gas sampling depurator that Fig. 2 provides for this utility model embodiment Figure.As in figure 2 it is shown, on the basis of above-described embodiment, further, return channel 6 can be return filter 61.Return filter 61 include reflux vessel 612；At filter element 611 reflux vessel 612, filter element 611 lower end is empty.

Wherein, filter element 611 material of return filter 61, such as, rustless steel, pottery or resin, it is contemplated that refluxed Filter 61 is coarse filter device, filters oarse-grained dust, it is preferred that select rustless steel.

It can be multiple that the filter element 611 of return filter 61 accounts for the ratio of reflux vessel 612, it is preferred that select institute's accounting The 1/2 of the volume of return filter 61, its work process is that part gas sample refluxes in reflux vessel 612, reduces one The large particulate matter of point gas sample returns in gas pipeline 4, by the part gas sample in filter element 611, has the bulky grain of part equally Being filtered, the composition making gas sample is cleaner.

The current limliting reflow type gas sampling depurator that the present embodiment provides, and the gas of relatively dampness higher for dust content Body.This gas sample enters return filter 61, refluxes and filters, the bulky grain thing in this gas sample can being filtered.

It addition, the self-cleaning filtering of current limliting reflow type gas sampling depurator that Fig. 3 provides for this utility model embodiment The schematic diagram of device.As it is shown on figure 3, on the basis of above-described embodiment, further, condensation separation purifier 8 also includes certainly Cleaned filter 9, is expanded condensing tube 7 and is connected with gas-liquid separator 81 by self-cleaning filter 9.

Wherein, self-cleaning filter 9 includes gas-liquid mixed instrument 91, distributed washing instrument 92, backflow separator 93, overflow pipe 94 and water sealing (sealing water) pipe 95；The outlet of gas-liquid mixed instrument 91 and the inlet communication of distributed washing instrument 92；Going out of distributed washing instrument 92 Mouth connects with backflow separator 93；The outlet of backflow separator 93 connects with gas-liquid separator 81；The upper end of overflow pipe 94 with point Cloth washing instrument 92 connects, and overflow pipe 94 be arranged in parallel with distributed washing instrument 92；The outside of overflow pipe 94 is cased with water sealing (sealing water) pipe 95, overflow pipe 94 the bottom of lower ending opening and water sealing (sealing water) pipe 95 have gap；It is provided with on the sidewall of water sealing (sealing water) pipe 95 and receives with waste water The upper outlet of collector 31 connection, and the lower outlet that mouth standby with low pressurized water seal 96 connects.

Distributed washing instrument 92 includes sluicing pipe and multiple distribution grid 921；Sluicing pipe is the body of closed at both ends, and washing The upper end of pipe connects with backflow separator 93, and its lower end connects with gas-liquid mixed instrument 91；Multiple distribution grids, from top to bottom, parallel Being arranged in sluicing pipe of interval.

Multiple hole it is provided with, hole a diameter of multiple, it is preferred that be 1-8mm on distribution grid 921.Distribution grid 921 can make The gas sample entering distributed washing instrument 921 is evenly distributed, and makes gas sample sufficiently have an effect with detergent, makes impurity be dissolved in washing In agent, thus play the effect of remove impurity.

Current limliting reflow type gas sampling depurator also includes washing oil scrubber, and it is arranged on reflux splitter 88 and pottery mistake Between filter 85, it is that the light oil in gas sample is carried out washing removing, makes gas sample the cleanest.

The current limliting reflow type gas sampling depurator that the present embodiment provides, for relatively high temperature, high dustiness, height containing wet Amount, the gas of high tar content, self-cleaning filter 9 can utilize the cleaning mixture in gas sample to the Organic substance in gas sample and water Solubility impurity carries out washing and separates, and is finally discharged to wastewater treatment equipment D, decreases or avoid newly-increased gas sample wash water Amount, thus decrease the pollution to environment.Wherein, gas-liquid mixed instrument 91 is to separate the liquid through expansion condenser 7； Multiple distribution grid 921 is set in distributed washing instrument 92, gas sample can be made to flow in distributed washing instrument 92 uniformly, it is thus possible to Make objectionable impurities be substantially dissolved in cleaning mixture, make the harmful constituent of gas sample reduce；Backflow separator 93 can make to press from both sides in gas sample The liquid backflow of band, decreases the flow of gas sample, and takes away the partial heat of gas sample；Overflow pipe 94 can receive unnecessary washing Wash liquid；The standby mouth of low pressurized water seal 96 arranged, be used for analyzing system demand pressure relatively low time, reduce water seal liquid level, thus Reduce the force value of system stability.

The signal of the cyclone separator of the current limliting reflow type gas sampling depurator that Fig. 4 provides for this utility model embodiment Figure.As shown in Figure 4, on the basis of above-described embodiment, further, current limliting reflow type gas sampling depurator also includes eddy flow Separator 62 and secondary sampling probe 51, one end of secondary sampling probe 51 is located in the overfall of cyclone separator 62, separately One end connects with the first capillary flow restrictor 11；Sampling probe 5 connects with the charging aperture of cyclone separator 62；Cyclone separator 62 Underflow opening connect with original gas pipeline 4.

Gas sample enters into cyclone separator 62 from sampling probe 5, is made the bulky grain thing in gas sample by cyclone separator 62 Matter is partially separated with gas, the part large particulate matter adjoint portion gas lower end by cyclone separator 62, has returned to gas In body pipeline 4.Secondary sampling probe 51 carries out gas sampling again.

The current limliting reflow type gas sampling depurator that the present embodiment provides, for high temperature, high dustiness, high water capacity, height The gas of tar content, carries out double sampling, filters, can make large particulate matter part before entering return filter 61 Return to, in gas pipeline 4, make device not have blocking, make bulky grain enter raw-gas pipeline 4 simultaneously, decrease gas sampling Volume exhaust and the discharge of pollutant, make device more environmental protection.

Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited System；Although being described in detail this utility model with reference to foregoing embodiments, those of ordinary skill in the art should Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new The scope of type each embodiment technical scheme.

Claims (10)

1. a current limliting reflow type gas sampling depurator, it is characterised in that including: sampling probe, the first capillary flow restrictor With condensation separation purifier；Described sampling probe, described first capillary flow restrictor and described condensation separation purifier depend on Secondary connection；Described first capillary flow restrictor flows in described condensation separation purifier for limiting described sampling probe The flow of fluid.

Current limliting reflow type gas sampling depurator the most according to claim 1, it is characterised in that also include the second capillary tube Current limiter and return channel；

Described sampling probe is connected with described first capillary flow restrictor by described return channel, and the port of export of described return channel is also Connected with described condensation separation purifier by the second capillary flow restrictor.

Current limliting reflow type gas sampling depurator the most according to claim 2, it is characterised in that described return channel is backflow Filter；Described return filter includes reflux vessel and filter element；Described filter element is arranged on the port of described reflux vessel, institute The lower end stating filter element is sky.

4. according to the current limliting reflow type gas sampling depurator described in Claims 2 or 3, it is characterised in that also include expanding cold Solidifying pipe；Described first capillary flow restrictor connects with described expansion condensing tube with described second capillary flow restrictor, described expansion Condensing tube connects with described condensation separation purifier again.

Current limliting reflow type gas sampling depurator the most according to claim 4, it is characterised in that described condensation separation purifies Device includes gas-liquid separator, cooling separator, reflux splitter, essence adsorber, ceramic filter, relief valve, surge tank, side Road effusion meter and multiple automatic drain device；

Described gas-liquid separator, described cooling separator, described reflux splitter, described ceramic filter and described essence absorption Device is sequentially communicated；Described relief valve it is additionally provided with on described gas-liquid separator；Described expansion condensing tube and described gas-liquid separator Connection；

Described by-pass gauge it is additionally provided with between described gas-liquid separator and described cooling separator；Described gas-liquid separator and Described cooling separator is all communicated with a described automatic drain device；Described ceramic filter also connects with described surge tank.

Current limliting reflow type gas sampling depurator the most according to claim 5, it is characterised in that described condensation separation purifies Device also includes self-cleaning filter, and described expansion condensing tube is by described self-cleaning filter with described gas-liquid separator even Logical.

Current limliting reflow type gas sampling depurator the most according to claim 6, it is characterised in that described self-cleaning filter Including gas-liquid mixed instrument, distributed washing instrument, backflow separator, overflow pipe and water sealing (sealing water) pipe；

The outlet of described gas-liquid mixed instrument and the inlet communication of described distributed washing instrument；The outlet of described distributed washing instrument with Described backflow separator connects；The outlet of described backflow separator connects with described gas-liquid separator；

The upper end of described overflow pipe connects with described distributed washing instrument, and described overflow pipe is parallel with described distributed washing instrument Arrange；The outside of described overflow pipe is cased with the water sealing (sealing water) pipe closed, the lower ending opening of described overflow pipe and the bottom of described water sealing (sealing water) pipe There is gap；The upper outlet connected with wastewater collection pipe, and mouth standby with low pressurized water seal it is provided with on the sidewall of described water sealing (sealing water) pipe The lower outlet of connection.

Current limliting reflow type gas sampling depurator the most according to claim 7, it is characterised in that described distributed washing instrument Including sluicing pipe and multiple distribution grid；Described sluicing pipe is the body of closed at both ends, and the upper end of described sluicing pipe with described time Flow separation instrument connects, and its lower end connects with gas-liquid mixed instrument；Multiple described distribution grids, from top to bottom, being arranged on of parallel interval In described sluicing pipe.

Current limliting reflow type gas sampling depurator the most according to claim 5, it is characterised in that described condensation separation purifies Device also includes washing oil scrubber, and described reflux splitter is connected with described ceramic filter by described washing oil scrubber.

10. according to the current limliting reflow type gas sampling depurator described in claim 1-3, any one of 5-9, it is characterised in that also Including cyclone separator and secondary sampling probe, one end of described secondary sampling probe is located in the overflow of described cyclone separator In mouthful, the other end connects with described first capillary flow restrictor；Described sampling probe connects with the charging aperture of described cyclone separator Logical；The underflow opening of described cyclone separator is for original gas pipeline connection.