CN215492704U

CN215492704U - Heating dehumidification sampling head

Info

Publication number: CN215492704U
Application number: CN202121840266.9U
Authority: CN
Inventors: 魏景钰; 陈涛; 蔡宏忱; 王晓领; 曹利峰; 赵玺
Original assignee: Tianjin Zhiyi Times Technology Development Co ltd
Current assignee: Tianjin Zhiyi Times Technology Development Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-01-11
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a heating and dehumidifying sampling head, which comprises a rear end part and a front end part, wherein the rear end part is used for forming a rear end gas path, the front end part is used for forming a front end gas path, a gas baffling separation part is arranged between the rear end gas path and the front end gas path, so that gas entering from the front end gas path is rebounded through baffling and then enters from an eccentric gas path to the rear end gas path and is then discharged, and the outer wall of a gas pipe of the rear end gas path is covered by a heating device; the side wall of the gas baffling separation part is provided with a discharge hole so as to discharge liquid water and/or particles separated after the gas is rebounded by baffling. The utility model can ensure that no liquid water exists in the gas entering the detection equipment, and ensure the accuracy of the gas particulate matter detection of the gas particulate matter sensor equipment.

Description

Heating dehumidification sampling head

Technical Field

The utility model relates to the technical field of particulate matter detection, in particular to a heating and dehumidifying sampling head for particulate matter detection.

Background

Particle check out test set is for sampling the particulate matter, uses the sample thief cooperation air pump sampling gas to detect in the check out test set usually, but current sample thief when sampling gas, if there is liquid water smoke in the gas, then liquid water smoke also can enter into check out test set together, and the particulate matter sensor can be discerned liquid water smoke for the particulate matter to influence check out test set's accuracy of detection data greatly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heating and dehumidifying sampling head for detecting particulate matters, which can quickly heat liquid water in gas entering a rear-end gas path to form gaseous water, so that no liquid water exists in the gas entering detection equipment, and the detection accuracy is ensured.

The technical scheme adopted for realizing the purpose of the utility model is as follows:

a heating and dehumidifying sampling head comprises a rear end part and a front end part, wherein the rear end part forms a rear end gas path, the front end part forms a front end gas path, a gas baffling and separating part is arranged between the rear end gas path and the front end gas path, so that gas entering from the front end gas path is rebounded through baffling and then enters from an eccentric gas path to the rear end gas path and is then discharged, and the outer wall of a gas pipe of the rear end gas path is covered by a heating device; the side wall of the gas baffling separation part is provided with a discharge hole so as to discharge liquid water and/or particles separated after the gas is rebounded by baffling.

Preferably, the front end of front end gas circuit is connected with the front end portion of admitting air, the front end portion of admitting air by a center area gas inlet hole the front end, with outer baffle that the front end is connected and arrange in the inside air filter foreign matter that is used for of the gas access channel between outer baffle and front end prevents to carry out the guard plate of front end gas circuit constitutes, the outer fringe of outer baffle for the front end outer fringe of front end is radial outside extension, makes to form annular gas inlet between their outer fringe.

Preferably, the protection plate is a pore plate, an air inflow hole corresponding to the air inlet hole of the front end is formed in the center of the pore plate, a plurality of circles of filtering holes for filtering are annularly arranged on the outer side of the air inflow hole, and the filtering holes are arranged corresponding to the annular gas inlet.

Preferably, the air inlet side of the air inlet hole of the front end head is provided with a flared part for introducing gas to be detected, the lower part of the flared part is connected with a through hole part which is connected with the front end air passage, and the aperture of the air inlet hole at the center of the pore plate is larger than the diameter of the flared part.

Preferably, the front end part forming the front end gas path is provided with a first cylindrical connecting part arranged at the front end and a second cylindrical connecting part arranged at the rear end, the first cylindrical connecting part is detachably connected with the drift diameter hole part, the second cylindrical connecting part is connected with the corresponding part of the gas baffling and separating part, and the gas outlet end of the front end gas path is positioned at the center of the first cylindrical connecting part and is opposite to the rebounding plane of the gas baffling and separating part;

an eccentric gas path for guiding the gas rebounded upwards to enter the rear-end gas path downwards is arranged on the outer side of the rebounding plane in the radial direction, and the eccentric gas path is parallel to the axis of the gas outlet end of the front-end gas path;

the side of the rebound plane, which points to the discharge hole, forms a sediment tank formed by a high-level and low-level ladder-shaped arrangement, and the discharge hole is connected with the sediment tank so as to discharge liquid water and/or particles deposited in the sediment tank.

Preferably, the heating device comprises a heating wire, an adhesive tape for fixing the heating wire on the outer wall of the rear-end air passage, and a heat-insulating layer arranged on the outer side of the adhesive tape.

Preferably, the outer side of the air pipe forming the rear end air passage is provided with a protection pipe, the protection pipe and the straight pipe are arranged coaxially, an annular space is formed between the protection pipe and the rear end air passage, and the tail end of the straight pipe forming the rear end air passage is connected with a quick connector.

Preferably, gas baffling separation portion with the rear end gas circuit is connected through an intermediate junction spare, there is gaseous via hole at the center of intermediate junction spare, gaseous via hole downwardly protruding stretch form protruding portion in order with the rear end gas circuit is connected, the protection tube have the mouth of pipe with the detachable connection of intermediate junction spare's corresponding connecting piece.

Preferably, the outlet opening is connected to the storage container via a radially arranged outlet line; the storage container is composed of a cover body and a container body detachably connected with the cover body, and the side wall of the cover body is provided with a hole and is connected with the discharge pipeline.

Preferably, the front end gas path and the rear end gas path are arranged coaxially, and the gas baffling and separating part is used for rebounding and baffling the entering gas so that the gas flows downwards to the rear end gas path along a channel on the radial outer side of the front end gas path.

The heating and dehumidifying sampling head adopts a modular structure, is convenient to assemble and produce, and can quickly heat the rear-end gas circuit because the heating device is arranged on the rear-end gas circuit, so that liquid water in gas entering the rear-end gas circuit is quickly heated to form gaseous water, thereby ensuring that no liquid water exists in the gas entering the detection equipment and ensuring the accuracy of detection.

In addition, the gas baffling separation part is arranged, so that liquid water in the entering gas to be detected can be preliminarily removed, and large-diameter particles in the gas to be detected can be discharged, and the detection accuracy is further ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of a heating and dehumidifying sampling head A-A according to an embodiment of the present invention;

FIG. 2 is a side view of a heating and dehumidifying sampling head according to an embodiment of the present invention;

FIG. 3 is a front view of a heating and dehumidifying sampling head according to an embodiment of the present invention;

FIG. 4 is an isometric view of a heating and dehumidifying sampling head according to an embodiment of the present invention;

FIG. 5 is a bottom view of a heated and dehumidified sampling head in accordance with an embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, the heating and dehumidifying sampling head according to the embodiment of the present invention includes a rear end portion forming a rear end gas path 13 and a front end portion forming a front end gas path 1, wherein a gas deflection separation portion 7 is disposed between the rear end gas path and the front end gas path, so that gas entering from the front end gas path is reflected by deflection and then enters from an eccentric gas path 3 into the rear end gas path and is then discharged, and an outer wall of a gas pipe of the rear end gas path is covered by a heating device; the side wall of the gas baffling separation part is provided with a discharge hole so as to discharge liquid water and/or particles separated after the gas is rebounded by baffling.

Illustratively, the front end of the front end gas path may be connected with a front end gas inlet, the front end gas inlet may be formed by a front end 50 having a T-shaped structure with a gas inlet hole at the center, an outer baffle 52 connected with the front end, and a protection plate 5 arranged inside a gas inlet channel between the outer baffle and the front end and used for filtering air and preventing foreign matters from entering the front end gas path, the outer edge of the outer baffle extends radially outward relative to the front end outer edge of the front end to form an umbrella-shaped structure, and covers the front end 50 of the T-shaped structure above, so that an annular gas inlet can be formed between the outer edges of the outer baffle and the front end to facilitate the gas to enter the inside of the sampling head after being filtered.

In this case, the front head 50 and the outer fender may be connected by bolts, which pass through the fender 5 to fix the fender between the front head and the outer fender.

The protection plate 5 can be a pore plate, an air inflow hole corresponding to an air inlet hole of the front end is formed in the center of the pore plate, a plurality of circles of filtering holes for filtering are annularly arranged on the outer side of the air inflow hole, the filtering holes are arranged corresponding to the annular gas inlet, so that external gas can conveniently enter through the annular gas inlet, then the external gas enters into a gas inlet channel between the outer baffle and the front end through the filtering holes, and then the external gas flows into the air inlet hole at the center of the front end 50 through the air inflow hole formed in the center of the pore plate and enters into the front end gas circuit 1 through the air inlet hole.

The air inlet side of the air inlet hole of the front end head 50 may be, for example, a flared portion into which gas to be measured is introduced to facilitate gas entering, a through-hole portion 51 connected to the lower portion of the flared portion is connected to the front end air passage 1, and the aperture of an air inlet hole in the center of the orifice plate is larger than the flared diameter of the flared portion.

Wherein, exemplarily, form the whole integral type structure that can be of front end portion of front end gas circuit 1, it can have one arrange in the first tube-shape connecting portion of front end with arrange in the diameter of rear end and be greater than the second tube-shape connecting portion of first tube-shape connecting portion, the outside is seen to be roughly and is fallen T-shaped structure, wherein, first tube-shape connecting portion with the detachable connection of latus rectum hole portion of front end, second tube-shape connecting portion are connected with the corresponding portion of gas baffling separation portion 7, the end of giving vent to anger of front end gas circuit is located the center of first tube-shape connecting portion, and just right the bounce plane 2 of gas baffling separation portion.

Illustratively, an eccentric gas path 3 for guiding the gas rebounded upwards to enter the rear-end gas path downwards is arranged on the radial direction outer side of the rebounding plane 2, and the eccentric gas path 3 is parallel to the axis of the gas outlet end of the front-end gas path.

Illustratively, the side of the rebound plane 2 directed to the discharge hole forms a sediment trap formed by a high-to-low step ladder arrangement, and the discharge hole is connected with the sediment trap to discharge liquid water and/or particles deposited in the sediment trap.

The first cylindrical connecting part and the second cylindrical connecting part can be in threaded connection, so that corresponding parts are in threaded connection, and the assembly and production or maintenance are facilitated.

Illustratively, the gas baffling separation part 7 is an integrated part and consists of an eccentric gas path 3, a rebound surface 2, a deposition groove and a discharge hole, wherein the upper part of the gas baffling separation part is provided with an external thread interface, the lower part of the gas baffling separation part is provided with an internal thread interface, the gas baffling separation part is communicated with the non-central side through the eccentric gas path, so that the control of the rebound and rise of the entered gas at the central position is realized, and the gas is flowed out of the eccentric gas path to a rear-end gas path 13 to be heated and then discharged.

Wherein, for example, the discharge hole can be connected to the storage container 6 through a radially arranged discharge line 4; the storage container is exemplarily composed of a cover body and a container body detachably connected with the cover body, and the side wall opening of the cover body is connected with the discharge pipeline so as to conveniently collect liquid water and/or large-diameter particles discharged by the gas baffling separation part.

Wherein, exemplarily, heating device can adopt heater strip 8 to heat, when adopting the heater strip, can be outside the pipe wall of heater strip spring form winding rear end gas circuit 13, then will heater strip is fixed with high temperature resistant sticky tape 8 on the outer wall of rear end gas circuit, in addition, can also be in the sticky tape outside sets up heat preservation 10 to prevent the heat and scatter and disappear, in order to play better heating effect, if can adopt the heat preservation of asbestos material or other heat preservation, specifically not limited. The high temperature resistant adhesive tape 8 is made of, for example, PET or PI material, and the PI material has better high temperature resistance, which is determined by the heating cut-off temperature.

The heating wire is connected with a temperature control switch 11, heating is controlled by the temperature control switch, the heating wire is automatically broken when heated to a specified temperature, the temperature control switch 11 can be provided with the lower part of a rear end gas circuit and is arranged on the outer wall close to the exhaust side, and the outer side of the temperature control switch can be wrapped by a heat insulation layer.

In this embodiment, a protection tube 14 may be disposed outside the air tube forming the rear end air passage 13, and may be coaxially disposed with the air tube, and form an annular space with the rear end air passage.

In the above, for example, to facilitate the quick connection of the air inlet pipe of the air pump, the end of the straight pipe type air pipe forming the rear end air passage may be connected with the quick connector 12, so as to facilitate the butt joint of the air inlet pipe of the air pump. The quick connector 12 can be connected with the tail end of the straight pipe type air pipe by adopting a conventional known threaded structure, so that the use is convenient. The tail end of the protection tube is also provided with a limiting tube 15 for limiting an air inlet tube led out of the air pump, the limiting tube is fixed on an external thread component, and the external thread component is in threaded connection with the tail end of the protection tube.

Wherein, gas baffling separator 7 with rear end gas circuit 13 is exemplary, can also be through the intermediate junction spare 16 connection of an integral type structure, intermediate junction spare 16's center has gaseous via hole, gaseous via hole downwardly protruding form protruding portion in order with rear end gas circuit 13 is connected, can be threaded connection, has guaranteed the concentricity of gaseous via hole and rear end gas circuit, protection tube 14 have the mouth of pipe with the detachable connection of the corresponding connecting portion of intermediate junction spare 16. Illustratively, the upper part of the intermediate connecting piece 16 has an external thread, and the lower part thereof has an internal thread, and the external thread of the upper part is connected with the threaded opening part of the gas baffling separation part, and the internal thread of the lower part is connected with the external thread opening of the upper end nozzle of the protection pipe.

In an exemplary embodiment, the front end gas path and the rear end gas path are preferably arranged coaxially, and the gas baffling and separating portion rebounds and baffls the incoming gas so that the gas flows down to the rear end gas path 13 through the eccentric gas path 3 along a channel radially outside the front end gas path 1.

When the sampling device is used, the lower end of the sampling head needs to be connected with an air pump to extract air; the gas to be measured firstly enters the sampling head through the protection plate 5, and the protection plate is used for preventing large-volume foreign matters, flying flocs and the like from entering the sampler. After entering the baffling separation chamber through the front end gas path 1, the gas to be measured can impact the rebound plane 2, and after rebound, the gas can enter the eccentric gas path 3. During the flow of the gas, particles of large diameter and part of the liquid water in the gas to be measured remain at the rebound plane 2 and enter the storage vessel for storage via the associated radially arranged discharge line 4.

Because the outer wall of rear end gas circuit twines the heater strip, the heater strip heats below gas circuit after the circular telegram, and liquid water becomes gaseous water by liquid water after being heated in the gas that enables to flow through in the gas circuit of below like this to eliminate the liquid water in the gas that awaits measuring, make liquid water disappear, thereby eliminated the particulate matter sensor among the check out test set and can be liquid water discernment for the particulate matter, lead to detecting numerical value too big, influence the technical problem of detected data accuracy.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The heating and dehumidifying sampling head is characterized by comprising a rear end part and a front end part, wherein the rear end part forms a rear end gas path, the front end part forms a front end gas path, a gas baffling and separating part is arranged between the rear end gas path and the front end gas path, so that gas entering from the front end gas path enters the rear end gas path from an eccentric gas path after being rebounded by baffling and then is discharged, and the outer wall of a gas pipe of the rear end gas path is covered by a heating device; the side wall of the gas baffling separation part is provided with a discharge hole so as to discharge liquid water and/or particles separated after the gas is rebounded by baffling.

2. The heating and dehumidifying sampling head of claim 1, wherein a front end air inlet is connected to a front end of the front end air passage, the front end air inlet is composed of a front end with an air inlet hole in the center, an outer baffle connected to the front end, and a protection plate arranged inside an air inlet passage between the outer baffle and the front end and used for filtering air and preventing foreign matters from entering the front end air passage, and an outer edge of the outer baffle extends radially outward relative to a front end outer edge of the front end so that an annular air inlet is formed between the outer edges.

3. The heating and dehumidifying sampling head as claimed in claim 2, wherein the protection plate is a perforated plate, an air inflow hole corresponding to the air inlet hole of the front end is formed in the center of the perforated plate, a plurality of circles of filtering holes for filtering are annularly arranged outside the air inflow hole, and the filtering holes are arranged corresponding to the annular air inlet.

4. The heating and dehumidifying sampling head as claimed in claim 3, wherein the air inlet side of the air inlet hole of the front end head is provided with a flared portion for introducing the gas to be measured, a through hole portion connected to a lower portion of the flared portion is connected to the front end air passage, and an air inflow hole in the center of the orifice plate has an aperture larger than a flared diameter of the flared portion.

5. The heating and dehumidifying sampling head as claimed in claim 4, wherein the front end portion forming the front end gas path has a first cylindrical connection portion disposed at a front end and a second cylindrical connection portion disposed at a rear end, the first cylindrical connection portion is detachably connected to the bore portion, the second cylindrical connection portion is connected to a corresponding portion of the gas deflecting and separating portion, and the gas outlet end of the front end gas path is located at a center of the first cylindrical connection portion and faces a rebound plane of the gas deflecting and separating portion;

6. The heating and dehumidifying sampling head as claimed in claim 1, wherein the heating means includes a heating wire, an adhesive tape fixing the heating wire on an outer wall of the rear-end air passage, and an insulating layer disposed outside the adhesive tape.

7. The heating and dehumidifying sampling head as claimed in claim 1 or 6, wherein a protection tube is provided outside the straight tube forming the rear-end gas path, and is coaxially arranged with the straight tube, and forms an annular space with the rear-end gas path, and the end of the straight tube forming the rear-end gas path is connected with a quick coupling.

8. The heating and dehumidifying sampling head as claimed in claim 7, wherein the gas baffling and separating portion is connected to the rear-end gas passage through an intermediate connecting member, a gas passing hole is formed in a center of the intermediate connecting member, the gas passing hole protrudes downward to form a protruding portion to be connected to the rear-end gas passage, and the protection tube has a tube opening to be detachably connected to a corresponding connecting member of the intermediate connecting member.

9. The heating and dehumidifying sampling head of claim 1 or 8 wherein the discharge hole is connected to the storage container through a radially arranged discharge line; the storage container is composed of a cover body and a container body detachably connected with the cover body, and the side wall of the cover body is provided with a hole and is connected with the discharge pipeline.

10. The heating and dehumidifying sampling head as claimed in claim 1, wherein the front end gas channel and the rear end gas channel are coaxially arranged, and the gas deflecting and separating portion deflects the entering gas so that the gas flows down to the rear end gas channel along a channel radially outside the front end gas channel.