CN114739753A

CN114739753A - Portable smoke sampling acquisition device and sampling method

Info

Publication number: CN114739753A
Application number: CN202210558241.2A
Authority: CN
Inventors: 金瑞奔; 黄建瑾; 冯志高; 王燕芳; 魏国平; 田晓蕊; 陈熠聪
Original assignee: Hangzhou Tianliang Detection Technology Co ltd
Current assignee: Hangzhou Tianliang Detection Technology Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-07-12
Anticipated expiration: 2042-05-20
Also published as: CN114739753B

Abstract

The utility model belongs to the technical field of the technique that gas detection detected and specifically relates to a collection system and sampling method for portable flue gas sampling is related to, wherein mainly relate to a collection system for portable flue gas sampling, including the collection pipe that is used for bleeding, it has the gas-supply pipe to gather union coupling, it is connected with the sprue that is used for blockking up the gas-supply pipe to slide in the gas-supply pipe, it is connected with the sampling dish to rotate on the gas-supply pipe, the sampling dish is provided with along circumference and is no less than two collection bottles, the collection bottle be used for with the gas-supply pipe butt joint. The present application has the following effects: in the process of collection, the sample of gathering at every turn can be separated in the slip of sprue to after the collection finishes in the preceding collection bottle, through rotating the sampling dish, sample work again after changing the collection bottle, it is whole comparatively convenient.

Description

Portable acquisition device for flue gas sampling and sampling method

Technical Field

The application relates to the technical field of gas detection, in particular to a convenient and fast acquisition device for sampling flue gas and a sampling method.

Background

In the detection environment, need to gather the sample to gas such as flue gas, will generally insert to going out the flue through gathering the pipe, take out gas to gathering in the bottle. And then detecting and analyzing the gas in the collection bottle.

In general sampling test process, because the instability and the inhomogeneity of flue gas, the testing result after the single sampling is not very accurate, can often do many times and gather, will gather the bottle and install the dismantlement again, it is comparatively troublesome to repeat many times.

Disclosure of Invention

In order to facilitate flue gas collection, the application provides a collection system and a sampling method for portable flue gas sampling.

First aspect, the application provides a collection system for portable flue gas sampling adopts following technical scheme: the utility model provides a collection system is used in sampling of portable flue gas, is including the collection pipe that is used for bleeding, it has the gas-supply pipe to gather the union coupling, it is connected with the sprue that is used for blockking up the gas-supply pipe to slide in the gas-supply pipe, it is connected with the sampling dish to rotate on the gas-supply pipe, the sampling dish is provided with along circumference and is no less than two collection bottles, the collection bottle be used for with the gas-supply pipe butt joint.

Through adopting above-mentioned technical scheme, the in-process of collection, the sample of every collection can be separated in the slip of sprue to after the collection finishes in preceding collection bottle, through rotating the sampling dish, sample work again after changing the collection bottle, it is whole comparatively convenient.

Preferably, be provided with in the collection bottle and separate the sealed piece of separating for gathering chamber and exhaust chamber with inside, the gas-supply pipe connect in gather the chamber, gather be provided with on the bottle communicate in the blast pipe in exhaust chamber, work as separate sealed piece and move to make when exhaust chamber exhausts, separate sealed piece will the blast pipe shutoff.

Preferably, separate the embedded permanent magnet that is equipped with of sealed piece, the gas-supply pipe with still be connected with the linkage pipe between the collection bottle, slide in the linkage pipe be connected with be used for with the slip iron plate of permanent magnet attraction, slip iron plate with the sprue is connected and is used for ordering about the sprue motion, be provided with the flue that supplies the flue gas to pass on the slip iron plate, be provided with in the linkage pipe and be used for making the sprue have the elastic component that breaks away from the gas-supply pipe department trend of giving vent to anger.

Through adopting above-mentioned technical scheme, at the in-process of separating the motion of sealed piece, will drive the jam piece motion for the air volume that is filled into to gathering in the bottle at every turn keeps unanimous almost, can not lead to the inconsistency of pressure intensity or density because of filling too much gas, and overall effect is good.

Preferably, inlay along the direction that is on a parallel with the gas flow on the gas-supply pipe and be equipped with the transform gas piece, have in the transform gas piece one end with the gas-supply pipe is connected and the other end and the linkage union coupling lead the air flue, the gas-supply pipe has the confession the transform gas piece inlays the storage tank of establishing, the tip of transform gas piece with form middle chamber between the storage tank bottom, be provided with one end on the gas-supply pipe and be connected with the back flow that communicates in middle chamber, be provided with in the back flow and only allow gaseous from middle chamber exhaust check valve.

Through adopting above-mentioned technical scheme, when the in-process of bleeding under normal conditions, the check valve can make gas only discharge and not get into, can be excessive under the circumstances and overflow, but can not get into in the collection process, causes the influence.

Preferably, the collection pipe is perpendicular to the gas pipe, the gas guide channel comprises a first channel parallel to the collection pipe and a second channel parallel to the gas pipe, and the gas outlet direction of the return pipe is parallel to the gas pipe.

Preferably, the bottom of the accommodating groove is provided with a conical middle part, and the end part of the air changing block is conical and embedded in the middle part.

By adopting the technical scheme, after the gas enters the gas conveying pipe from the collecting pipe, the gas can be bent by a vertical angle, firstly, under the condition that the gas conveying pipe is smooth, the gas changing block can guide the gas to directly enter the linkage pipe in the middle cavity, the gas collection is normally carried out at the moment, the gas in the backflow pipe flows to enter the middle cavity from the outside due to the condition of negative pressure, and at the moment, the gas can be kept not to enter the middle cavity due to the reason of the one-way valve; when the gas pipe is blocked by the block, the flowing trend of gas in the return pipe is reversed, and the gas is discharged from the return pipe to reduce the influence of the smoke on the block.

Preferably, one end of the return pipe, which is far away from the middle cavity, is communicated with the collection pipe.

By adopting the technical scheme, under the condition that the return pipe can be communicated with the collecting pipe, the smoke can be temporarily circulated in the collecting pipe.

Preferably, the collection pipe is connected with a sample pipe in a sliding manner along the length direction of the gas and used for collecting the smoke at different positions.

Through adopting above-mentioned technical scheme, when collecting to the flue gas of different positions, alright through the motion of appearance pipe, satisfy the collection requirement.

Preferably, a deformation rubber pad is fixedly arranged on one side, close to the linkage pipe, of the blocking block.

Through adopting above-mentioned technical scheme, when the sprue was sealed, gaseous effort was received to the sprue, will keep supporting tightly, and deformation rubber pad also can corresponding deformation this moment can improve sealed effect like this.

The second aspect, the application provides a portable flue gas sampling method, to gather the pipe and insert to the flue in, at the in-process of sampling, the flue gas will enter into to gathering the bottle through the gas-supply pipe in, make gradually separating sealed piece and move in gathering the bottle, gather intracavity flue gas and increase, and the air escape in the exhaust chamber, the sprue carries out the shutoff with the gas-supply pipe gradually simultaneously, the back flow can circulate the flue gas at the inner wall this moment, then do the rotation of sampling dish, the replacement gathers the bottle, thereby the sprue resets and samples again this moment.

Through adopting above-mentioned technical scheme, when gathering at every turn, can collect the flue gas of the same volume through the sprue to can not cause the flue gas to leak, holistic collection efficiency is high, and convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sampling disc can be rotated to collect for multiple times, and almost consistent sampling amount can be kept due to the existence of the blocking block in each collection, so that the accuracy of collection is improved;

2. through the setting of negative pressure, can not influence when positive collection and admit air, and when gathering full back, will change gaseous flow direction, be convenient for gather.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

fig. 2 is a schematic structural view of a sliding iron block.

Description of reference numerals: 100. a collection tube; 110. an air pump; 111. a sample tube; 120. a gas delivery pipe; 121. blocking; 122. a connecting rod; 123. sliding the iron block; 124. a flue; 125. a first spring; 126. a second spring; 130. a gas change block; 131. a containing groove; 132. an intermediate portion; 133. a middle cavity; 134. a first pass; 135. a second pass; 136. caulking grooves; 137. a channel; 138. deforming the rubber pad; 140. a sampling disc; 141. collecting a bottle; 142. separating the sealing blocks; 143. a collection chamber; 144. an exhaust chamber; 145. an exhaust pipe; 146. a permanent magnet; 150. a return pipe; 160. a one-way valve; 170. a linkage pipe.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses collection system for sampling of portable flue gas, refer to FIG. 1, including the collection pipe 100 that is used for bleeding, collection pipe 100 vertical setting in this embodiment for insert to the pipeline in, be provided with air pump 110 in collection pipe 100, be used for bleeding. A sample tube 111 is hermetically connected in the collection tube 100 in a sliding manner, and one end of the sample tube 111, which is far away from the collection tube 100, is used for air inlet.

The collecting pipe 100 is connected with an air conveying pipe 120, the air conveying pipe 120 is horizontally arranged, namely perpendicular to the collecting pipe 100, a blocking block 121 used for blocking the air conveying pipe 120 is connected in the air conveying pipe 120 in a sliding mode, an air changing block 130 is embedded in the air conveying pipe 120 along the direction parallel to the air flowing direction, the air conveying pipe 120 is provided with a containing groove 131 for the air changing block 130 to be embedded, the bottom of the containing groove 131 is provided with a conical middle part 132, the end part of the air changing block 130 is conical and is embedded in the middle part 132, and the air changing block 130 is fixed in the containing groove 131 in a threaded connection mode in the example. Meanwhile, an intermediate cavity 133 is formed between the end of the air-changing block 130 and the bottom of the accommodating groove 131.

The gas transmission pipe 120 is rotatably connected with a sampling disc 140, the sampling disc 140 is provided with at least two collecting bottles 141 along the circumferential direction, and the collecting bottles 141 are used for being in butt joint with the gas transmission pipe 120. The central axis of the collection bottle 141 is parallel to the air delivery conduit 120 and the axis of rotation of the sampling disk 140 is parallel to the air delivery conduit 120.

The air changing block 130 is internally provided with an air guide channel, one end of the air guide channel is connected with the air conveying pipe 120, the other end of the air guide channel is connected with the linkage pipe 170, the air guide channel comprises a first channel 134 parallel to the collection pipe 100 and a second channel 135 parallel to the air conveying pipe 120, and the air can do right-angle turning between the first channel 134 and the second channel 135.

The gas delivery pipe 120 is provided with a return pipe 150, one end of which is connected with the middle cavity 133, the gas outlet direction of the return pipe 150 is parallel to the gas delivery pipe 120, and the return pipe 150 is provided with a one-way valve 160 which only allows gas to be discharged from the middle cavity 133. The end of return conduit 150 remote from intermediate chamber 133 communicates with collection conduit 100.

The collection bottle 141 is internally provided with a separation sealing block 142 which separates the interior into a collection cavity 143 and an exhaust cavity 144, the gas pipe 120 is connected with the collection cavity 143, the collection bottle 141 is provided with an exhaust pipe 145 communicated with the exhaust cavity 144, and when the separation sealing block 142 moves to empty the exhaust cavity 144, the separation sealing block 142 seals the exhaust pipe 145.

The permanent magnet 146 is embedded in the separation sealing block 142, a linkage pipe 170 is connected between the gas pipe 120 and the collection bottle 141, and the linkage pipe 170 is connected to one end of the gas pipe 120 and is coaxial with the gas pipe. The sliding iron block 123 used for attracting the permanent magnet 146 is connected in the linkage pipe 170 in a sliding mode, the sliding iron block 123 is connected with the blocking block 121 through the connecting rod 122, the blocking block 121 is driven to move after the sliding iron block 123 moves, a channel 137 communicated with the linkage pipe 170 is formed in the middle of the groove bottom of the containing groove 131, namely the middle of the middle cavity 133, an embedded groove 136 for blocking the blocking block 121 after being embedded is formed in the end portion of the channel 137, and meanwhile, a deformation rubber pad 138 is fixedly arranged on one side, close to the linkage pipe 170, of the blocking block 121, and the sealing effect can be improved when the blocking block 121 is embedded.

Referring to fig. 1 and 2, the sliding iron block 123 is provided with a plurality of flues 124 for smoke to pass through, and the flues 124 are uniformly distributed along the circumferential direction. An elastic member for making the block piece 121 have a tendency to escape from the outlet of the gas delivery pipe 120 is provided in the linking pipe 170. In this embodiment, the elastic member is a first spring 125, the first spring 125 is sleeved on the connecting rod 122, and two ends of the first spring are respectively and fixedly connected to the sliding iron block 123 and the inner wall of the linkage pipe 170.

The connection of collection bottle 141 and linkage pipe 170 also has check valve 160 in this embodiment, and after sampling dish 140 rotated the back butt joint, the gas in collection bottle 141 can not spill over in collection bottle 141, when needing to draw, with collection bottle 141's bottleneck directly open can, but also can install the check valve 160 of diversion, when needing to draw, change leading to of check valve 160 for gas can spill over. And in order to enable the subsequent separation and sealing block 142 to be reset, a second spring 126 is provided in the venting chamber 144, the second spring 126 being such that, after the collection bottle 141 has been disconnected from the linkage tube 170, the separation and sealing block 142 will slide onto the end bottom wall, thus evacuating the collection chamber 143 of gas.

Based on the above collection device for portable flue gas sampling, the embodiment of the application also discloses a portable flue gas sampling method, the method includes that the collection tube 100 is inserted into the flue 124, during sampling, flue gas enters through the gas conveying pipe 120, at the moment, the flue gas moves from the first channel 134 to the second channel 135, during flowing of the flue gas, negative pressure is generated at the middle cavity 133, and due to the existence of the one-way valve 160 in the return pipe 150, although the trend that air enters towards the middle cavity 133 from the outside is achieved, the sealing effect can be achieved.

Under the action of the first spring 125, the channel 137 is kept open initially, smoke enters the linkage pipe 170 and finally enters the collection bottle 141, the separation sealing block 142 is gradually moved in the collection bottle 141, smoke in the collection cavity 143 is increased, air in the exhaust cavity 144 is exhausted, meanwhile, the blocking block 121 and the separation sealing block are linked together and gradually embedded into the caulking groove 136, so that the gas pipe 120 is blocked, the gas flow direction in the return pipe 150 is changed, the trend that the middle cavity 133 flows outwards is achieved, and the smoke circulates at the moment. Because the amount of the stored smoke at each time is kept consistent through the movement process of the blocking block 121, the collection of the smoke can be more uniform and unified, and because the blocking block 121 is embedded in the caulking groove 136 under the action of the smoke, the possibility of separation is avoided.

Then do the rotation of sampling dish 140, replace and gather bottle 141, at the pivoted in-process, the sealed piece 142 of separation among the preceding collection bottle 141 loses the effort to slip iron plate 123, jam piece 121 will break away from caulking groove 136, open passageway 137, will originally store the gas outgoing in linkage pipe 170, still keep exhausting outwards in middle chamber 133 simultaneously, when the flue gas that slides and carry out the different degree of depth to appearance pipe 111 is gathered, can be earlier with the flue gas exhaust back of previous position, carry out next sampling, just so can reduce the mutual interference of sampling.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a collection system for portable flue gas sampling, is including the collection pipe (100) that are used for bleeding, its characterized in that: the collecting pipe (100) is connected with an air conveying pipe (120), a blocking block (121) used for blocking the air conveying pipe (120) is connected in the air conveying pipe (120) in a sliding mode, a sampling disc (140) is connected on the air conveying pipe (120) in a rotating mode, at least two collecting bottles (141) are arranged on the sampling disc (140) along the circumferential direction, and the collecting bottles (141) are used for being in butt joint with the air conveying pipe (120).

2. The portable smoke sampling collection device of claim 1, wherein: the collecting bottle is characterized in that a separating sealing block (142) which separates the inside into a collecting cavity (143) and an exhaust cavity (144) is arranged in the collecting bottle (141), the gas conveying pipe (120) is connected to the collecting cavity (143), an exhaust pipe (145) communicated with the exhaust cavity (144) is arranged on the collecting bottle (141), and when the separating sealing block (142) moves to enable the exhaust cavity (144) to be exhausted, the separating sealing block (142) seals the exhaust pipe (145).

3. The portable smoke sampling collection device of claim 2, wherein: separate sealed piece (142) embedded permanent magnet (146) that is equipped with, gas-supply pipe (120) with still be connected with linkage pipe (170) between gathering bottle (141), linkage pipe (170) internal slipping be connected with be used for with slip iron plate (123) that permanent magnet (146) attracted, slip iron plate (123) with blockking up (121) are connected and are used for driving blockking up (121) motion, be provided with flue (124) that supply the flue gas to pass on slip iron plate (123), be provided with in linkage pipe (170) and be used for making blockking up (121) have the elastic component that breaks away from gas-supply pipe (120) department trend of giving vent to anger.

4. The portable collection system for flue gas sampling of claim 3, wherein: inlay along the direction that is on a parallel with gas flow on gas-supply pipe (120) and be equipped with and become gas piece (130), become gas piece (130) in have one end with the gas-supply pipe (120) are connected and the other end and the air guide way that linkage pipe (170) are connected, gas-supply pipe (120) have the confession become gas piece (130) and inlay storage tank (131) of establishing, become the tip of gas piece (130) with form middle chamber (133) between storage tank (131) the tank bottom, be provided with one end on gas-supply pipe (120) and be connected with back flow (150) that communicate in middle chamber (133), be provided with in back flow (150) and only allow gaseous check valve (160) of discharging from middle chamber (133).

5. The portable smoke sampling collection device of claim 4, wherein: the collecting pipe (100) is perpendicular to the air conveying pipe (120), the air guide channel comprises a first channel (134) parallel to the collecting pipe (100) and a second channel (135) parallel to the air conveying pipe (120), and the air outlet direction of the return pipe (150) is parallel to the air conveying pipe (120).

6. The portable smoke sampling collection device of claim 5, wherein: the bottom of the accommodating groove (131) is provided with a conical middle part (132), and the end part of the air changing block (130) is conical and embedded in the middle part (132).

7. The portable smoke sampling collection device of claim 6, wherein: the end of the return pipe (150) far away from the middle cavity (133) is communicated with the collection pipe (100).

8. The portable smoke sampling collection device of claim 7, wherein: the collection pipe (100) is connected with a sample pipe (111) in a sliding manner along the length direction of the gas and used for collecting the smoke at different positions.

9. The portable smoke sampling collection device of claim 8, wherein: and a deformation rubber pad (138) is fixedly arranged on one side, close to the linkage pipe (170), of the blocking block (121).

10. A portable flue gas sampling method based on the collection device of claim 9, characterized in that: insert collection pipe (100) to flue (124) in, at the in-process of sampling, the flue gas will enter into collection bottle (141) through gas-supply pipe (120), make gradually separating sealed piece (142) and move in collection bottle (141), the flue gas increases in collection chamber (143), and the air discharge in exhaust chamber (144), simultaneously sprue (121) carry out the shutoff with gas-supply pipe (120) gradually, back flow (150) can circulate the flue gas at the inner wall this moment, then do the rotation of sampling dish (140), replace collection bottle (141), thereby sprue (121) reset at this moment samples again.