CN207318178U - A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment - Google Patents
A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment Download PDFInfo
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- CN207318178U CN207318178U CN201721180469.3U CN201721180469U CN207318178U CN 207318178 U CN207318178 U CN 207318178U CN 201721180469 U CN201721180469 U CN 201721180469U CN 207318178 U CN207318178 U CN 207318178U
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- sampling head
- pipette tips
- low concentration
- relative humidity
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Abstract
It the utility model is related to a kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment, it includes heating unit, sampling head and base, offered on the base for accommodate the heating unit heating unit placement duct, offer sample gas flow passage, offer for accommodate the sampling head sampling head resettlement groove, offer for connecting the sample gas flow passage and the sampling head so that sample gas can enter the first through hole of the sample gas flow passage from the sampling head.The super low concentration particle sampling pipette tips of the utility model can carry out overall heating to filter membrane and by the sample gas passage before and after filter membrane, Pitot tube pipe shaft can be heated at the same time, it ensure that in sample gas passage and Pitot tube and ponding do not occur, and filter membrane is not wetted, influence of the liquid water to super low concentration particle sampling under low temperature and high relative humidity environment is avoided.
Description
Technical field
The utility model belongs to particle sampling device field, and in particular to a kind of suitable for the ultralow of low temperature and high relative humidity environment
Concentration of particles thing sampling gun head.
Background technology
With pushing forward comprehensively for domestic coal-burning power plant's minimum discharge transformation, particle concentration drops to super in chimney inlet flue gas
Low emission limit value 10mg/m3, even 5mg/m3Within.In general, coal-fired plant flue gas has first passed through desulfurization before chimney is entered
The environmental protection equipments such as tower, wet electrical dust precipitator, finally form low temperature and high relative humidity flue gas environment in chimney, have seriously affected existing super
The normal use of low concentration particulate matter sampling apparatus.
A large amount of spot sampling test jobs show that existing super low concentration particle sampling device makes under low temperature and high relative humidity environment
Used time, there are the easy ponding of pipette tips, filter membrane cracky, can not sample for a long time, sampled result distortion the problems such as.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of super low concentration suitable for low temperature and high relative humidity environment
Grain thing sampling gun head.
To solve above technical problem, the utility model adopts the following technical scheme that：
A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment, it includes heating unit, sampling head
And base, offer on the base for accommodate the heating unit heating unit placement duct, offer sampling
Gas communication hole road, offer for accommodate the sampling head sampling head resettlement groove, offer for connecting described adopt
Sample gas communication hole road and the sampling head are so that sample gas can enter the sampling from the sampling head
The first through hole in gas communication hole road.
Specifically, the sampling head resettlement groove include Part I, one end be connected with the Part I and
The Part II extended along the length direction of the base, the sampling head include being arranged in the Part I
Filter assemblies, be arranged in the Part II and with the sampling mouth of the passage passed through for the sample gas, institute
It is connected between the filter assemblies and the base stated formed with the gas compartment, the filter assemblies with the sampling mouth
And the passage of the sampling mouth is connected with the gas compartment, the gas compartment by the first through hole with
The sample gas flow passage is connected.
Preferably, the heating unit disposes duct to extend along the length direction of the base.
It is further preferred that described heating unit placement duct has multiple and is symmetricly set on the sampling head placement
The both sides of groove.
According to a preferred embodiment, the Part I include be connected with the Part II the first side wall,
Outside be connected on the downside of the first side wall the first bottom surface, upside is with being connected on the inside of first bottom surface
Second sidewall, the second bottom surface with being connected on the downside of the second sidewall, the first through hole are opened in described the
On two bottom surfaces.
Specifically, the filter assemblies include with cavity and downward opening support box, are arranged in the support box
Filter membrane, be connected with the support box for the box lid being fixed on the filter membrane in the support box, the support box
It is connected with the sampling mouth and the cavity of the support box is connected with the passage of the sampling mouth, the box lid position
Offer the second through hole between first bottom surface and the support box and on the box lid, it is the support box, described
Box lid, the second sidewall and second bottom surface form the gas compartment, the filter membrane is positioned at described
It is divided into upper and lower part in the gas compartment and by the gas compartment, the cavity of the support box is logical with the sampling mouth
The connectivity part in road is located at the top.
More specifically, the filter assemblies further include the upper surface for being arranged on the filter membrane and have multiple through holes
First supporting item, the lower surface for being arranged on the filter membrane and the second supporting item with multiple through holes, be fixed at it is described
Support box on support platform, be arranged between the support platform and first supporting item the first packing ring, set
Second packing ring between the box lid and second supporting item.
Specifically, the super low concentration particle sampling pipette tips, which further include, is arranged on the sampling head resettlement groove and institute
Gasket between the sampling head stated, be connected with the sampling head resettlement groove it is described for the sampling head pressure to be arranged on
Sampling head resettlement groove in fastener.
More specifically, the fastener includes with cavity and downward opening connection body, is formed in the company
The handle on the upper surface of body is connect, the connection body is mutually threadedly coupled with the sampling head resettlement groove and the mistake
Component is filtered in the cavity of the connection body.
Specifically, the super low concentration particle sampling pipette tips further include temperature sensor and Pitot tube, the bottom
Formed with the temperature sensor placement duct for accommodating the temperature sensor, for accommodating the Pitot tube on seat
Pitot tube resettlement groove, the Pitot tube resettlement groove extend along the length direction of the base.
Due to the implementation of above technical scheme, the utility model has the following advantages that compared with prior art：
The super low concentration particle sampling pipette tips of the utility model to filter membrane and can pass through the sample gas before and after filter membrane
Passage carries out overall heating, while Pitot tube pipe shaft can be heated, and ensure that in sample gas passage and Pitot tube not
Generation ponding, and filter membrane is not wetted, avoids influence of the liquid water to super low concentration particle sampling under low temperature and high relative humidity environment.
Brief description of the drawings
Attached drawing 1 is the structure diagram of base；
Attached drawing 2 is the structure diagram of sampling head；
Attached drawing 3 is the structure diagram of gasket；
Attached drawing 4 is the structure diagram of fastener；
Wherein, 1, base；2nd, sampling head；3rd, gasket；4th, fastener；5th, temperature sensor placement duct；6th, heating dress
Put placement duct；7th, Pitot tube resettlement groove；8th, sample gas flow passage；9th, sampling head resettlement groove；11st, first through hole；12nd, adopt
Sample mouth；13rd, box is held in the palm；14th, support platform；15th, the first supporting item；16th, the second supporting item；17th, filter membrane；18th, box lid；19th, first
Packing ring；20th, second packing ring；41st, body is connected；42nd, handle；91st, Part I；92nd, Part II；911st, the first side wall；
912nd, the first bottom surface；913rd, second sidewall；914th, the second bottom surface.
Embodiment
The embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
The utility model provides a kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment, this practicality
The grade noun of locality front and rear up and down in new is to do what is defined with the orientation of super low concentration particle sampling pipette tips when in use,
Wherein, in use, sampling head 2 is located at the upper surface of base 1（That is the orientation of base 1 is orientation when using in Fig. 1）, base
1 length direction refers to the left and right directions in Fig. 1.
Super low concentration particle sampling pipette tips include base 1, sampling head 2, heating unit, temperature sensor, Pitot tube, close
Packing 3 and fastener 4.
As shown in Figure 1, offered on the upper surface of base 1 for accommodate sampling head 2 sampling head resettlement groove 9, following table
The Pitot tube resettlement groove 7 for accommodating Pitot tube is offered on face, the heating for accommodating heating unit is further opened with base 1
Device placement duct 6, the temperature sensor placement duct 5 for accommodating temperature sensor, sample gas flow passage 8 and first
Through hole 11.Gasket 3 is arranged between sampling head resettlement groove 9 and sampling head 2, and sampling head 2 and base 1 are realized by fastener 4
Compress sealing.
In the present embodiment, base 1 is process by whole aluminium block.
Pitot tube resettlement groove 7 extends along the length direction of base 1, and both ends extend through the left and right ends face of base 1.
Temperature sensor disposes duct 5 to extend along the length direction of base 1, and left end is closed, and right end is through base 1
Right side, during mounting temperature sensor, the right end in temperature sensor from temperature sensor placement duct 5 is inserted into.
Heating unit disposes duct 6 to extend along the length direction of base 1, and left end is closed, and right end runs through the right side of base 1
End face.In the present embodiment, heating unit is heating rod, and during installation, the right side in heating rod self-heating apparatus placement duct 6 is inserted
Enter.
There are both sides that are multiple and being symmetricly set on sampling head resettlement groove 9 in heating unit placement duct 6, specifically, such as Fig. 1 institutes
Show, heating unit placement duct 6 there are two and is symmetricly set on the down either side of sampling head resettlement groove 9, is symmetricly set on Pitot
Above the both sides of pipe resettlement groove 7, so that heating unit preferably can heat sampling head 2 and Pitot tube.
Sample gas flow passage 8 extends along the length direction of base 1, and left end is closed, and right end runs through the right side of base 1
End face, upside is connected by first through hole 11 with sampling head 2 so that sample gas can enter sampling gas from sampling head 2
Body flow passage 8.
Sampling head resettlement groove 9 includes Part I 91, one end and is connected with Part I 91 and along the length of base 1
The Part II 92 of direction extension, as shown in Figure 1, Part I 91 is generally cylindrical, Part II 92 is elongated.Specifically
Ground, Part I 91 includes the first side wall 911 that is connected with Part II 92, outside is connected with the downside of the first side wall 911
Under second sidewall 913 and second sidewall 913 that the first bottom surface 912, the upside connect is connected with the inner side of the first bottom surface 912
The second bottom surface 914 that side is connected.
First bottom surface 912 is in circular ring shape, as shown in figure 3, gasket 3 is also in circular ring shape, gasket 3 is located at the first bottom surface
So as to ensure the leakproofness between sampling head 2 and base 1 between 912 and sampling head 2.Second bottom surface 914 is rounded, the second bottom surface
914 are located at the top of sample gas flow passage 8, and first through hole 11 is opened on the second bottom surface 914 and circulates with sample gas
Duct 8 is connected.The internal diameter for the cylinder that the first side wall 911 is formed is more than the internal diameter for the cylinder that second sidewall 913 is formed.
As shown in Fig. 2, sampling head 2 include be arranged in Part I 91 filter assemblies, be arranged in Part II 92
And with the sampling mouth 12 of the passage passed through for sample gas, sampling mouth 12 is in question mark type.
Sampling head 2 in Fig. 2 is in actual use, it is necessary to turned upside down.Orientation with sampling head 2 in actual use below
The restriction of above-below direction is carried out, i.e., following lower sections is the top in Fig. 2, and following tops is the lower section in Fig. 2.
Filter assemblies include with cavity and it is downward opening support box 13, be arranged on support box 13 in filter membrane 17, with support box
13 are connected for filter membrane 17 to be fixed on to the box lid 18 held in the palm in box 13, be arranged on the upper surface of filter membrane 17 and has multiple through holes
The first supporting item 15, be arranged on filter membrane 17 lower surface and with multiple through holes the second supporting item 16, be fixed at support
Support platform 14 on box 13, the first packing ring 19 being arranged between 14 and first supporting item 15 of support platform, be arranged on box lid
18 and the second second packing ring 20 between supporting item 16.
Hold in the palm on the outer surface of box 13 formed with external screw thread, formed with internal thread on the inner surface of box lid 18, support box 13 it is upper
Face seal, lower surface are opening, and the second through hole is offered on box lid 18 and the second through hole is corresponding with holding in the palm the opening of box 13.
During assembling, by the first packing ring 19, the first supporting item 15, filter membrane 17, the second supporting item 16, second packing ring 20 from upper and
Under be arranged between support platform 14 and box lid 18 successively layer, then box lid 18 with support box 13 connected by internal and external threads
Connect, realize the assembling of filter assemblies, the filter assemblies assembled are positioned in sampling head resettlement groove 9 and so that box lid 18 is located at
Between first bottom surface 912 and support box 13, specifically, being provided with gasket 3 on the first bottom surface 912, box lid 18 is pressed on gasket 3
On.
Formed with the gas compartment between filter assemblies and base 1, filter assemblies are connected with sampling mouth 12 and sample mouth 12
Passage be connected with the gas compartment, specifically, support box 13 with sample mouth 12 be connected and hold in the palm box 13 cavity and sample mouth 12
Passage be connected, support box 13, box lid 18,913 and second bottom surface 914 of second sidewall form the gas compartment, and first through hole 11 makes
The gas compartment is obtained with sample gas flow passage 8 to be connected.Filter membrane 17 is located in the gas compartment and the gas compartment is divided into top
And lower part, ask the cavity of box 13 and the connectivity part of the passage of sampling mouth 12 to be located at the top of the gas compartment.The gas compartment passes through
One through hole 11 is connected with sample gas flow passage 8.During sampling, sample gas enters the gas compartment from the passage for sampling mouth 12
Top, then after the filtering of filter membrane 17, carry out the lower part of the gas compartment, then enter sample gas through first through hole 11 and circulate
Duct 8.
In the present embodiment, the first supporting item 15 and the second supporting item 16 are the air rings made of polytetrafluoroethylene material
Circle, is evenly distributed with multiple through holes thereon.Gasket 3 is also the ring washer made of polytetrafluoroethylene material.
As shown in figure 4, fastener 4 include with cavity and it is downward opening connection body 41, be formed in connection body 41
Upper surface on handle 42, handle 42 is in cross.
The upside of the first side wall 911 is formed with screw thread, formed with first on the lateral wall of the connection body 41 of fastener 4
The matched screw thread of screw thread on side wall 911, so that fastener 4 is connected through a screw thread with sampling head resettlement groove 9.Assembling
When, gasket 3 is positioned on the first bottom surface 912, then sampling head 2 is placed in sampling head resettlement groove 9, then by fastener
4 lids are located on filter assemblies and filter assemblies is then connected body by screw thread in the cavity of connection body 41
41 are connected with sampling head resettlement groove 9.
In the present embodiment, fastener 4 is to be integrally formed to be made by polytetrafluoroethylene material.
The utility model is described in detail above, its object is to allow the personage for being familiar with this field technology can be much of that
Solve the content of the utility model and be carried out, the scope of protection of the utility model can not be limited with this, it is all according to this practicality
The equivalent change or modification that new Spirit Essence is made, should all cover within the protection scope of the present utility model.
Claims (10)
- A kind of 1. super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment, it is characterised in that：It includes heating dress Put, sampling head（2）And base（1）, the base（1）On offer heating unit peace for accommodating the heating unit Put duct（6）, offer sample gas flow passage（8）, offer for accommodating the sampling head（2）Sampling head placement Groove（9）, offer for connecting the sample gas flow passage（8）With the sampling head（2）So that sampling gas Body can be from the sampling head（2）Into the sample gas flow passage（8）First through hole（11）.
- 2. the super low concentration particle sampling pipette tips according to claim 1 suitable for low temperature and high relative humidity environment, its feature exists In：The sampling head resettlement groove（9）Including Part I（91）, one end and the Part I（91）It is connected and edge The base（1）Length direction extension Part II（92）, the sampling head（2）Including being arranged on described the A part（91）Interior filter assemblies, be arranged on the Part II（92）It is interior and with passing through for the sample gas The sampling mouth of passage（12）, the filter assemblies and the base（1）Between formed with the gas compartment, the filtering group Part and the sampling mouth（12）It is connected and the sampling mouth（12）Passage be connected with the gas compartment, it is described The gas compartment pass through the first through hole（11）With the sample gas flow passage（8）It is connected.
- 3. the super low concentration particle sampling pipette tips according to claim 2 suitable for low temperature and high relative humidity environment, its feature exists In：The heating unit placement duct（6）Along the base（1）Length direction extension.
- 4. the super low concentration particle sampling pipette tips according to claim 3 suitable for low temperature and high relative humidity environment, its feature exists In：The heating unit placement duct（6）Have multiple and be symmetricly set on the sampling head resettlement groove（9）Both sides.
- 5. the super low concentration particle sampling pipette tips according to claim 2 suitable for low temperature and high relative humidity environment, its feature exists In：The Part I（91）Including with the Part II（92）The first side wall being connected（911）, outside with it is described The first side wall（911）The first bottom surface for being connected of downside（912）, upside and first bottom surface（912）Inner side phase The second sidewall of connection（913）And the second sidewall（913）The second bottom surface for being connected of downside（914）, described One through hole（11）It is opened in second bottom surface（914）On.
- 6. the super low concentration particle sampling pipette tips according to claim 5 suitable for low temperature and high relative humidity environment, its feature exists In：The filter assemblies include having cavity and downward opening support box（13）, be arranged on the support box（13）Interior filter Film（17）And the support box（13）It is connected for by the filter membrane（17）It is fixed on the support box（13）Interior box lid （18）, the support box（13）With the sampling mouth（12）It is connected and the support box（13）Cavity and the sampling Mouth（12）Passage be connected, the box lid（18）Positioned at first bottom surface（912）With the support box（13）Between And the box lid（18）On offer the second through hole, the support box（13）, described box lid（18）, described second sidewall （913）With second bottom surface（914）Form the gas compartment, the filter membrane（17）Positioned at the gas compartment It is interior and the gas compartment is divided into upper and lower part, the support box（13）Cavity and the sampling mouth（12）It is logical The connectivity part in road is located at the top.
- 7. the super low concentration particle sampling pipette tips according to claim 6 suitable for low temperature and high relative humidity environment, its feature exists In：The filter assemblies, which further include, is arranged on the filter membrane（17）Upper surface and with multiple through holes the first supporting item （15）, be arranged on the filter membrane（17）Lower surface and with multiple through holes the second supporting item（16）, be fixed at institute The support box stated（13）On support platform（14）, be arranged on the support platform（14）With first supporting item（15）It Between the first packing ring（19）, be arranged on the box lid（18）With second supporting item（16）Between second packing ring （20）.
- 8. the super low concentration particle sampling pipette tips according to claim 2 suitable for low temperature and high relative humidity environment, its feature exists In：The super low concentration particle sampling pipette tips, which further include, is arranged on the sampling head resettlement groove（9）With the sampling Head（2）Between gasket（3）And the sampling head resettlement groove（9）It is connected for by the sampling head（2）Pressure is arranged on The sampling head resettlement groove（9）Interior fastener（4）.
- 9. the super low concentration particle sampling pipette tips according to claim 8 suitable for low temperature and high relative humidity environment, its feature exists In：The fastener（4）Including with cavity and downward opening connection body（41）, be formed in the connection body （41）Upper surface on handle（42）, the connection body（41）With the sampling head resettlement groove（9）Mutually it is threadedly coupled And the filter assemblies are located at the connection body（41）Cavity in.
- 10. the super low concentration particle sampling pipette tips according to claim 1 suitable for low temperature and high relative humidity environment, its feature exists In：The super low concentration particle sampling pipette tips further include temperature sensor and Pitot tube, the base（1）On formed with Temperature sensor for accommodating the temperature sensor disposes duct（5）, Pitot tube for accommodating the Pitot tube Resettlement groove（7）, the Pitot tube resettlement groove（7）Along the base（1）Length direction extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721180469.3U CN207318178U (en) | 2017-09-15 | 2017-09-15 | A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721180469.3U CN207318178U (en) | 2017-09-15 | 2017-09-15 | A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment |
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| Publication Number | Publication Date |
|---|---|
| CN207318178U true CN207318178U (en) | 2018-05-04 |
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ID=62382487
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721180469.3U Active CN207318178U (en) | 2017-09-15 | 2017-09-15 | A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment |
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| CN (1) | CN207318178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655725A (en) * | 2017-09-15 | 2018-02-02 | 苏州西热节能环保技术有限公司 | A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment |
-
2017
- 2017-09-15 CN CN201721180469.3U patent/CN207318178U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655725A (en) * | 2017-09-15 | 2018-02-02 | 苏州西热节能环保技术有限公司 | A kind of super low concentration particle sampling pipette tips suitable for low temperature and high relative humidity environment |
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