CN212722263U

CN212722263U - Waterproof sampling device

Info

Publication number: CN212722263U
Application number: CN202021718116.6U
Authority: CN
Inventors: 燕蛟; 季德程; 韩洪东; 许卫宁; 邵其善
Original assignee: Qingdao Minghua Electronic Instrument Co ltd
Current assignee: Qingdao Minghua Electronic Instrument Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-16
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a waterproof sampling device, it includes, the sampling pipe body and be located respectively the sampling control portion and the sampling pipe head portion at sampling pipe body both ends, the sampling pipe head portion includes: the sampling device comprises a first protection pipe, a first sampling pipe and a sampling nozzle, wherein the first sampling pipe and the sampling nozzle are positioned in the first protection pipe; a water blocking part is arranged in the first sampling pipe, and a water storage cavity is formed by the water blocking part and the pipe wall of the first sampling pipe. The technical scheme of the utility model thereby solved current smoke and dust sampling pipe comdenstion water and flowed backwards easily to the problem that the sampling mouth leads to the filter membrane to damage.

Description

Waterproof sampling device

Technical Field

The utility model relates to a smoke and dust sampling field, in particular to waterproof sampling device.

Background

In recent years, people pay more and more attention to air pollution prevention and control technology, the emission of industrial smoke dust is strictly in accordance with the national emission standard, the content of each pollutant of the emitted smoke dust is mainly measured automatically by referring to a filtering and weighing method, so the precision of a collected sample directly influences the detection precision, and further influences the normal work of the whole factory exhaust emission system.

Generally, a certain amount of dust-containing gas is extracted from smoke sampling pipes of different types at a constant speed for sampling smoke dust in a pollution discharge pipeline, and the smoke dust is analyzed by using a filter weighing method. The smoke and dust sampling pipe can meet the comparatively abominable operating mode such as gas that the institute adopted contains humidity height when actual sampling, consequently, the smoke and dust sampling pipe sets up heating device mostly in order to avoid the sampling mouth to gather the smoke and dust of high humidity with influence sampling effect. Heating device sets up the one side that is close the sampling mouth at the sampling pipe usually to guarantee the steam rapid heating evaporation of sampling mouth part, and this kind of high temperature smoke and dust continues to flow to the part that does not set up heating device along the sampling pipe when, because the great messenger of the preceding and back difference in temperature this part pipeline produces the comdenstion water easily, at this moment, if the sampling pipe slope, the comdenstion water then flows the position of sampling mouth very easily, probably causes the damage of filter membrane.

Disclosure of Invention

The to-be-solved technical problem of the utility model is that current smoke and dust sampling pipe comdenstion water flows backwards to the problem of sampling mouth easily, for this, the utility model provides a prevent waterproof smoke and dust sampling device of comdenstion water refluence.

To the technical problem mentioned above, the utility model provides a following technical scheme:

the utility model provides a waterproof sampling device, its includes, the sampling pipe body and be located respectively sampling control portion and the sampling pipe head portion at sampling pipe body both ends, the sampling pipe head portion includes: the sampling device comprises a first protection pipe, a first sampling pipe and a sampling nozzle, wherein the first sampling pipe and the sampling nozzle are positioned in the first protection pipe; a water blocking part is arranged in the first sampling pipe, and a water storage cavity is formed by the water blocking part and the pipe wall of the first sampling pipe.

The utility model discloses an among the some embodiments, first sampling pipe is being close set up heating device on the partial pipe wall of sampling mouth, the manger plate set up in keeping away from of first sampling pipe one side of heating device.

The utility model discloses an among the partial embodiment, water blocking piece shaping is both sides open-ended cone, the great side end connection of cone's diameter in on the pipe wall of first sampling pipe, the less one side tip orientation of cone's diameter is kept away from the direction of sampling mouth extends.

The utility model discloses an among the partial implementation, the sampling pipe body includes the second protection tube and is located the inside second sampling pipe of second protection tube, second sampling union coupling in the tip of first sampling pipe and communicate with it, the fender water spare is located being close to of first sampling pipe the tip region of second sampling pipe.

The utility model discloses an in some embodiments, still set up filtering baffle in the first sampling pipe, filtering baffle is relative the water retaining member is close to the sampling mouth.

In some embodiments of the present invention, the first sampling tube comprises: a body part spaced a set distance from an inner wall of the first protection pipe; the pipe end part is in clearance fit with the inner wall of the first protection pipe and is connected with the first protection pipe in a sealing mode through a sealing ring.

The utility model discloses an among the partial embodiment, the sampling mouth includes filter membrane sampling mouth or strains a section of thick bamboo sampling mouth, filter membrane sampling mouth or strain a section of thick bamboo sampling mouth through pressing the cap to press and locate on the clamping ring, clamping ring threaded connection in on the first protective tube and press in the pipe end portion, press the cap can dismantle connect in on the first protective tube.

The utility model discloses an among the some embodiments, heating device include first heat conduction sleeve and fixed connection in heating member on the heat conduction sleeve, the heat conduction sleeve cup joint in the body portion is close to the region of pipe end portion.

The utility model discloses an in some embodiments, still include temperature measuring device, temperature measuring device detects the temperature of first sampling pipe, sampling control portion basis the temperature control of sampling pipe heating device opens or closes.

The utility model discloses an among the partial embodiment, temperature measuring device include second heat conduction sleeve and fixed connection in temperature measurement spare on the second heat conduction sleeve, second heat conduction sleeve cup joint in the somatic part is kept away from the region of pipe tip, the signal line of heating member wears to locate second heat conduction sleeve.

The technical scheme of the utility model prior art relatively has following technological effect:

the utility model discloses an among the waterproof sampling device, through be equipped with the manger plate spare in first sampling pipe, the pipe wall formation water storage of manger plate spare and first sampling pipe holds the chamber, when sampling device slope sampling, the pipe wall that the comdenstion water can follow first sampling pipe flows to the water storage and holds the chamber, does not continue to flow to sampling nozzle direction, avoids causing the damage of filter membrane.

Further, the utility model discloses an among the waterproof sampling device, it makes filter membrane sampling mouth or strain a section of thick bamboo sampling mouth all can be positioned between the two through setting up pressure cap and clamping ring structure, makes sampling mouth and first sampling pipe communicate the collection that realizes the smoke and dust particulate matter. The multifunctional sampling device can be matched with the filter membrane sampling nozzle and the filter cartridge sampling nozzle, is used under different working conditions, and is simple in field operation and small in personnel burden, and only the sampling nozzle needs to be replaced.

Drawings

The objects and advantages of the present invention will be understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a specific embodiment of the waterproof sampling device of the present invention;

FIG. 2 is a partial cross-sectional view of the filter membrane sampling nozzle installed in the waterproof sampling device of the present invention;

FIG. 3 is a partial cross-sectional view of the water sampling device of the present invention with a filter cartridge sampling nozzle installed therein;

fig. 4 is a perspective view of a filter cartridge sampling nozzle in the waterproof sampling device of the present invention;

fig. 5 is a perspective view of the filter membrane sampling nozzle in the waterproof sampling device of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Fig. 1-3 show a concrete implementation of a waterproof sampling device (hereinafter referred to as a sampling device) of the present invention, which includes a sampling tube body 200 and a sampling control portion 300 and a sampling tube head portion 100 respectively located at two ends of the sampling tube body 200, wherein the sampling tube head portion 100 is used for connecting different sampling nozzles to collect smoke, and the sampling tube control portion is used for controlling the sampling nozzles to collect smoke, for example, controlling the gas flow rate and gas pressure in the whole flow channel by controlling the suction device. The sampling tube body 200 is used for conveying smoke, and particularly, the sampling tube body 200 is used for communicating the suction device with a sampling pipeline of the sampling tube head 100. Specifically, the sampling tube body 200 includes a second protection tube 201 disposed outside, a second sampling tube 202 located inside the second protection tube 201, and an end cap 203 located at an end of the second protection tube 201, wherein one end of the second sampling tube 202 is communicated with the suction device, and the other end of the second sampling tube 202 is inserted into the end cap 203 and is communicated with the first sampling tube 102 of the sampling tube head 100.

Wherein the sampling tube head 100 comprises: a first protection tube 101, and a first sampling tube 102 and a sampling nozzle which are positioned inside the first protection tube 101, specifically, the sampling nozzle comprises a filter membrane sampling nozzle 104a or a filter cartridge sampling nozzle 104b, and the sampling nozzle is detachably connected to the first protection tube 101 and is communicated with the first sampling tube 102; in order to prevent condensed water generated on the first sampling tube 102 from flowing back to the sampling nozzle side, a water blocking piece 108 is arranged in the first sampling tube, and the water blocking piece 108 and the tube wall of the first sampling tube 102 form a water storage cavity. Therefore, even when the sampling device is used for sampling in an inclined mode, condensed water generated on the pipe wall flows back along the pipe wall to the water storage cavity, and a filter membrane of the sampling nozzle cannot be damaged.

Specifically, the first sampling tube 102 includes a tube body 1021 and a tube end 1022, and more specifically, the tube body 1021 and the tube end 1022 are welded together to form an integral structure, the tube body 1021 is spaced from the inner wall of the first protection tube 101 by a set distance, and the tube end 1022 and the inner wall of the first protection tube 101 are in clearance fit and are hermetically connected by a sealing ring 110. The inner wall of the first protection tube 101 is formed with a sealing groove at a position matching with the tube end 1022, and the sealing ring 110 is installed in the sealing groove to realize the sealing connection between the first sampling tube 102 and the first protection tube 101, so as to prevent the gas passing through the sampling nozzle from flowing to the region between the first sampling tube 102 and the first protection tube 101.

Specifically, the sampling tube head 100 further comprises a pressing ring 103 and a pressing cap 105, wherein the pressing ring 103 is screwed on the first protection tube 101 and presses against the tube end 1022. To define the position of the first sampling tube 102 within the first protective tube 101. The pressing cap 105 is detachably connected to the first protection tube 101 and is used for abutting the sampling nozzle on the pressing ring 103.

When the waterproof sampling device is used for sampling and collecting smoke dust, the pressure cap 105 presses the filter membrane sampling nozzle 104a or the filter cartridge sampling nozzle 104b against the pressure ring 103, so that the sampling nozzle is communicated with the first sampling pipe 102, the sampling pipe can be matched with the filter membrane sampling nozzle 104a and the filter cartridge sampling nozzle 104b, the waterproof sampling device is used under different working conditions, only the sampling nozzle needs to be replaced, and the waterproof sampling device is simple in field operation and small in personnel burden.

In order to avoid that the gas contains high humidity and the like and the humidity of the smoke collected by the sampling nozzle is too high under the relatively severe working condition, the deviation of the collected data is too large, the heating device 106 is arranged on the first sampling tube 102, and the heating of the heating device 106 is controlled in the sampling process, so that the water vapor in the sampling nozzle can be rapidly evaporated. Since condensed water is generally generated at a position where a temperature difference between cold and heat is large, the water blocking member 108 is disposed at a side of the first sampling pipe 102 far from the heating device 106, and more particularly, the water blocking member 108 is located at an end portion near the second sampling pipe 202 to more effectively collect the condensed water.

More specifically, the heating device 106 includes a first heat-conducting sleeve and a heating body fixedly connected to the heat-conducting sleeve, and the first heat-conducting sleeve is sleeved on the tube body 1021 near the tube end 1022. The heating body adopts heating sources such as ceramic heating rods or electric heating wires, and the first heat-conducting sleeve is made of an aluminum pipe to conduct heat quickly.

The structure of the water blocking member 108 is not exclusive, and specifically, in one embodiment, the water blocking member 108 is formed into an annular plate structure, that is, the outer side of the annular plate is connected with the pipe wall of the first sampling pipe, and the inner side is provided with a through hole for gas flowing.

The annular plate is perpendicular to the first sampling tube in the above embodiment, and when the sampling device is in an inclined state, water drops on the upper side can easily drop to the tube close to one side of the sampling nozzle along the inner through hole. Therefore, in another embodiment, the water blocking member 108 is formed as a cone structure with two open sides, the larger diameter end of the cone is connected to the wall of the first sampling tube 102, and the smaller diameter end of the cone extends away from the sampling nozzle. That is, the conical cylinder body and the pipe wall of the first sampling pipe 102 on the side where the water storage cavity is formed are arranged at an acute angle smaller than 90 degrees, and when the first sampling pipe is inclined, the probability that water drops on the upper side drop on the water storage cavity on the lower side is higher, and the water drops are difficult to flow back to the pipe wall close to one side of the sampling nozzle.

Specifically, a filtering baffle 109 is further disposed in the first sampling tube 102, and the filtering baffle 109 is close to the sampling nozzle relative to the water blocking member 108. The filtering baffle 109 is provided with a plurality of through holes, and the filtering baffle 109 further prevents water drops from flowing towards the direction of the sampling nozzle.

In order to avoid the temperature of the sampling tube from being too high, the first sampling tube 102 is further provided with a temperature measuring device 107, and when the temperature measuring device 107 detects that the temperature reaches a set value, the sampling control part 300 controls the heating device 106 to stop heating.

Temperature measuring device 107 with heating device 106 sets up independently, temperature measuring device 107 includes second heat conduction sleeve and fixed connection in temperature measurement spare on the second heat conduction sleeve, temperature measurement spare adopts temperature sensor, the second heat conduction sleeve adopts the aluminum pipe equally with quick heat transfer, temperature measurement spare peg graft in the second heat conduction sleeve to make temperature measuring device 107 direct detection first sampling pipe 102's temperature, avoid temperature measurement spare direct mount to be fixed in on heating device's first heat conduction sleeve and influence the temperature measurement result. And the signal wire of the heating body is arranged in the second heat-conducting sleeve in a penetrating way.

Specifically, the press cap 105 includes: a pressing portion 1053 abutting on the sampling nozzle; a fastening portion 1051 detachably coupled to the first protection tube 101, and a coupling portion 1052 coupled between the pressing portion 1053 and the fastening portion 1051. More specifically, the fastening portion 1051 is provided with an external thread, the first protection pipe 101 is provided with an internal thread, and the fastening portion 1051 is screwed with the first protection pipe 101. In order to prevent the pressing portion 1053 from rubbing the surface of the sampling nozzle when the fastening portion 1051 rotates with the fastening portion 1051 during the screwing process of the fastening portion 1051 and the first protection tube 101, the fastening portion 1051 and the connection portion 1052 are rotatably connected, and the connection portion 1052 and the pressing portion 1053 are fixedly connected. That is, when the fastening portion 1051 rotates, the connection portion 1052 and the pressing portion 1053 do not rotate therewith. The squeezing portion 1053 is made of a compressible elastic material, such as rubber, to avoid deformation of the sampling nozzle.

Specifically, the filter sampling nozzle 104a includes: the smoke dust collecting device comprises a first bent pipe part 104a1 used for extending into a flue to be detected to collect smoke dust, a first particle containing part used for containing particles, and a mounting part 104a4 used for being mounted and fixed in the sampling pipe. The first particulate matter containing section is enclosed by the filter membrane 104a3 and an arcuate connecting section 104a2 projecting toward the first elbow section 104a1, the arcuate connecting section 104a2 being connected to the elbow section; the mounting portion 104a4 surrounds the first particulate matter accommodating portion and is formed in a ring plate shape. The pressing portion 1053 presses against the mounting portion 104a4 and the arcuate connecting portion 104a2 to achieve secure positioning of the filter sampling nozzle 104 a.

Specifically, cartridge sampling nozzle 104b includes: a second elbow part 104b1 for stretching into the flue to be measured and collecting smoke and dust, a second particulate matter accommodating part for accommodating particulate matter. Wherein the second particulate matter receiving part is defined by a filter cartridge 104b3 and a cover plate 104b2, the cover plate 104b2 being connected to the second elbow part 104b 1; the pressing portion 1053 presses against the connection end cap 203.

Specifically, the ends of the squeezing portion 1053 are shaped to match the filter membrane sampling nozzle 104a and the cartridge sampling nozzle 104b so that both sampling nozzles can be securely connected inside the first protective tube 101.

Specifically, the inner wall surface of the tube end 1022 of the first sampling tube 102 is formed to match the cylindrical surface of the filter cartridge 104b3, specifically, the cylindrical surface of the filter cartridge 104b3 is formed to be a conical surface, and the inner wall surface of the tube end 1022 is formed to be a conical surface, so that the filter cartridge sampling nozzle 104b can be positioned more reliably, and the filter cartridge sampling nozzle 104b is prevented from shaking in the first sampling tube 102.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A waterproof sampling device comprises a water-proof sampling device,

sampling pipe body and be located respectively the sampling control portion and the sampling pipe head portion at sampling pipe body both ends, its characterized in that, the sampling pipe head portion includes:

the sampling device comprises a first protection pipe, a first sampling pipe and a sampling nozzle, wherein the first sampling pipe and the sampling nozzle are positioned in the first protection pipe;

a water blocking part is arranged in the first sampling pipe, and a water storage cavity is formed by the water blocking part and the pipe wall of the first sampling pipe.

2. A water resistant sampling device according to claim 1 wherein:

the first sampling pipe is provided with a heating device on a part of pipe wall close to the sampling nozzle, and the water retaining piece is arranged on one side of the first sampling pipe, which is far away from the heating device.

3. A water resistant sampling device according to claim 1 wherein:

the water retaining piece molding is a conical cylinder body with openings at two sides, the end part at one side with the larger diameter of the conical cylinder body is connected to the pipe wall of the first sampling pipe, and the end part at one side with the smaller diameter of the conical cylinder body faces away from the sampling nozzle and extends in the direction.

4. A water resistant sampling device according to claim 1 wherein:

sampling pipe body includes the second protection pipe and is located the inside second sampling pipe of second protection pipe, second sampling pipe connect in the tip of first sampling pipe and communicate with it, the fender water spare is located being close to of first sampling pipe the tip region of second sampling pipe.

5. A water resistant sampling device according to claim 1 wherein:

and a filtering baffle is further arranged in the first sampling pipe, and the filtering baffle is close to the sampling nozzle relative to the water retaining piece.

6. A water resistant sampling device according to claim 2 wherein: the first sampling tube comprises:

a body part spaced a set distance from an inner wall of the first protection pipe;

the pipe end part is in clearance fit with the inner wall of the first protection pipe and is connected with the first protection pipe in a sealing mode through a sealing ring.

7. A water resistant sampling device according to claim 6 wherein:

the sampling mouth includes filter membrane sampling mouth or strains a section of thick bamboo sampling mouth, filter membrane sampling mouth or strain a section of thick bamboo sampling mouth and locate on the clamping ring through pressing the cap pressure, clamping ring threaded connection in on the first protective tube and press in the pipe end portion, press the cap can dismantle connect in on the first protective tube.

8. A water resistant sampling device according to claim 6 wherein:

the heating device comprises a first heat-conducting sleeve and a heating body fixedly connected to the heat-conducting sleeve, and the heat-conducting sleeve is sleeved on the area, close to the pipe end, of the pipe body.

9. A water resistant sampling device according to claim 8 wherein:

the temperature measuring device detects the temperature of the first sampling pipe, and the sampling control part controls the heating device to be turned on or turned off according to the temperature of the sampling pipe.

10. A water resistant sampling device according to claim 9 wherein:

the temperature measuring device comprises a second heat-conducting sleeve and a temperature measuring part fixedly connected to the second heat-conducting sleeve, the second heat-conducting sleeve is sleeved on the region, away from the pipe end, of the pipe body part, and a signal wire of the heating body penetrates through the second heat-conducting sleeve.