Flue gas pressure sampling and purging device

Abstract

The invention relates to the technical field of flue pressure sampling, and discloses a flue gas pressure sampling purging device which comprises a flue and a first pipe body arranged on the flue, a sampling mechanism is arranged at one end of the first pipe body and comprises a sampling pipe, the outer side wall of the sampling pipe is rotationally connected with a cover body, and the cover body is arranged on the outer side wall of the sampling pipe. A blowing opening and a sampling opening are formed in one end of the sampling pipe, a telescopic mechanism is arranged at the position, close to the interior of the flue, of one end of the first pipe body, the telescopic mechanism comprises a third pipe body, the third pipe body is divided into multiple sections which are connected in a sleeved mode, a fourth pipe body is arranged on the outer side wall of the third pipe body, and an adjusting assembly is arranged on the outer side wall of the third pipe body. The adjusting assembly is used for changing the length of the third pipe bodies. The lower end of the Y-shaped sampling tube is directly inserted into the top of the original sampling sleeve, and the Y-shaped sampling tube can be quickly disassembled and assembled by adopting a clamping thread fixing mode, so that a user can conveniently clean and subsequently maintain the Y-shaped sampling tube.

Description

Technical Field

[0001] The invention relates to the technical field of flue pressure sampling, in particular to a flue gas pressure sampling and purging device. Background Art

[0002] Air pollution sources include fixed pollution sources and mobile pollution sources. Fixed pollution sources are further divided into organized emission sources and unorganized emission sources. Organized emission sources refer to flues, chimneys and exhaust pipes. Unorganized emission sources refer to unorganized emission facilities or unorganized emission workshops and sheds located in open air environments. The exhaust gas they emit contains both solid smoke and dust, as well as a variety of harmful substances in gaseous and aerosol states. Flue sampling refers to the sampling process of pollutants in the flue of organized emission sources among fixed air pollution sources.

[0003] In recent years, with the requirements of coal blending and combustion schemes for power plant boilers, the composition of coal types has become increasingly complex, the impurities in the coal powder entering the boiler for combustion have increased, the pressure sampling and measuring devices in the furnace and flue have been subject to corrosion and wear, and the accuracy and reliability of pressure parameter measurement have been greatly reduced. In severe cases, it affects the normal operation of the unit and causes the risk of boiler fire extinguishing unit tripping. Therefore, a purge device that can clean the sampling tube is proposed. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a flue gas pressure sampling and purging device, which has the advantage of purging the sampling tube and solves the problem of corrosion and wear of the sampling device.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flue gas pressure sampling and purging device, comprising a flue and a tube body one arranged on the flue, a sampling mechanism being arranged at one end of the tube body one, the sampling mechanism comprising a sampling tube, the outer wall of the sampling tube being rotatably connected with a cover body, a purge port and a sampling port being arranged at one end of the sampling tube, respectively, a telescopic mechanism being arranged at one end of the tube body one near the interior of the flue, the telescopic mechanism comprising: tube body three, the tube body three being multiple sections, which are respectively sleeved and connected, tube body four being arranged on the outer wall of the tube body three, the outer wall of the tube body three being provided with an adjustment component, the adjustment component being used to change the length of the multiple sections of the tube body three.

[0008] In some embodiments, a heating tube is disposed on the inner side of the tube body 1, and one end of the sampling tube is embedded in the inner wall of the heating tube.

[0009] In some embodiments, a second tube body is opened inside the first tube body, one end of the sampling tube is abutted against one side of the second tube body, and the caliber of the sampling tube is the same as the caliber of the second tube body.

[0010] In some embodiments, the cover is threadedly connected to one end of the tube.

[0011] In some embodiments, the outer wall of the sampling tube is provided with a ring body, and the ring body can limit one end of the heating tube.

[0012] In some embodiments, the adjustment component includes: tube body five is fixed to the outer wall of tube body three, and a solenoid valve is provided on tube body five; a telescopic tube is fixed to tube body five, and a connecting plate is fixed at one end of the telescopic tube, and the connecting plate is connected to one end of tube body three.

[0013] In some embodiments, the angle between the tube body 1 and the tube body 3 is 15 degrees.

[0014] In some embodiments, one end of the purge port is connected to a pressure sampling instrument tube, one end of the sampling port is connected to a flow meter, and the flow meter is sequentially connected to a regulating valve, a pressure gauge, a pressure stabilizing valve, a filter valve and an air source.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a flue gas pressure sampling and purging device, which has the following beneficial effects:

[0017] 1. The flue gas pressure sampling and purging device has a Y-shaped sampling tube whose lower end is directly inserted into the top of the original sampling sleeve. The Y-shaped sampling tube is fixed by a clamping thread, and can be quickly disassembled and installed, so as to facilitate the user to clean and subsequently maintain the Y-shaped sampling tube.

[0018] 2. The flue gas pressure sampling and purging device has a Y-shaped sampling tube with a purge port and a sampling port. The sampling port can normally sample pollutants in the flue. The purge port is connected to a gas source, and the gas source transmits compressed gas to the tube body and the telescopic mechanism, which can purge both of them, thereby reducing the corrosion of the tube body during long-term use and affecting the later sampling.

[0019] 3. The flue gas pressure sampling and purging device has a flow meter, a regulating valve, a pressure gauge, a pressure regulating valve and a filter valve connected between the gas source and the purge port. The compressed gas can be filtered and adjusted to a certain pressure to maintain the gas at a certain pressure. The air is then filtered and finally transmitted to the pipe body for purging. The user can know the pressure inside the pipe by observing the pressure gauge.

[0020] 4. In the flue gas pressure sampling and purging device, a heating tube is provided between the Y-shaped sampling tube and the tube body. Since the sampling distance is specific, in order to ensure the accuracy of sampling, the operation of the heating tube can be selectively controlled according to the temperature of the Y-shaped sampling tube, so that the internal temperature of the Y-shaped sampling tube is maintained at a certain value, and the temperature inside the Y-shaped sampling tube can be kept warm by wrapping the tube body, thereby ensuring the accuracy of sampling.

[0021] 5. The flue gas pressure sampling and purging device has a telescopic mechanism mainly composed of multiple tube bodies, which form a telescopic tube. The user can change the telescopic degree of the multiple tube bodies to adapt to flues of different lengths, thereby ensuring the accuracy of sampling.

[0022] 6. The flue gas pressure sampling and purging device can connect the tube body three with the tube body five through the solenoid valve when controlling the extension and retraction of the telescopic mechanism. At this time, a certain pressure of gas is sent into the Y-shaped sampling tube, and part of the gas is introduced into the tube body three through the tube body one. The telescopic tube is extended and retracted by the gas, and finally the telescopic tube drives the multi-section tube body three to extend and retract, thereby eliminating the need for manual adjustment by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the split structure of the sampling mechanism in the present invention;

[0025] Figure 3 It is a schematic diagram of a three-dimensional structure of a tube body in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the sampling mechanism in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the connection between the telescopic mechanism and the adjustment assembly in the present invention.

[0028] In the figure:

[0029] 100, flue; 110, pressure sampling instrument tube; 120, flow meter; 130, regulating valve; 140, pressure gauge; 150, pressure stabilizing valve; 160, filter valve; 170, gas source;

[0030] 200, sampling mechanism; 210, sampling tube; 220, cover body; 230, purge port; 240, sampling port; 250, ring body;

[0031] 300. Pipe body one; 310. Heating tube; 320. Pipe body two;

[0032] 400, telescopic mechanism; 410, tube body three; 420, tube body four;

[0033] 500, adjustment component; 510, pipe body five; 520, solenoid valve; 530, telescopic tube; 540, connecting plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] Air pollution sources include fixed pollution sources and mobile pollution sources. Fixed pollution sources are further divided into organized emission sources and unorganized emission sources. Organized emission sources refer to flues, chimneys and exhaust pipes. Unorganized emission sources refer to unorganized emission facilities or unorganized emission workshops and sheds located in open air environments. The exhaust gas they emit contains both solid smoke and dust, as well as a variety of harmful substances in gaseous and aerosol states. Flue sampling refers to the sampling process of pollutants in the flue of organized emission sources among fixed air pollution sources.

[0039] In the related technology, in recent years, with the requirements of coal blending and combustion schemes for power plant boilers, the composition of coal types has become increasingly complex, the impurities in the coal powder entering the boiler for combustion have increased, the pressure sampling and measuring devices in the furnace and flue have been subject to corrosion and wear, and the accuracy and reliability of pressure parameter measurement have been greatly reduced. In severe cases, it affects the normal operation of the unit and causes the risk of tripping of the boiler fire extinguishing unit. Therefore, a purge device that can clean the sampling tube is proposed.

[0040] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a flue gas pressure sampling and purging device, the lower end of the Y-shaped sampling tube 210 is directly inserted into the top of the original sampling sleeve, and the Y-shaped sampling tube 210 can be quickly disassembled and installed by a snap-on thread fixing method, so that the user can clean and subsequently maintain the Y-shaped sampling tube 210; the Y-shaped sampling tube 210 has a purge port 230 and a sampling port 240, and the sampling port 240 can normally sample pollutants in the flue 100. The purge port 230 is connected to the gas source 170, and the gas source 170 transmits the compressed gas to the tube body 300 and the telescopic mechanism 400, and both can be purged, thereby reducing the corrosion of the tube body during long-term use and affecting the subsequent sampling.

[0041] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0042] Combination Figure 1-Figure 5 The embodiment of the present application provides a flue gas pressure sampling and purging device, including a flue 100 and a tube body 300 arranged on the flue 100, a sampling mechanism 200 is arranged at one end of the tube body 300, the sampling mechanism 200 includes a sampling tube 210, the outer wall of the sampling tube 210 is connected to a cover body 220 in the form of a bearing, a purge port 230 and a sampling port 240 are respectively arranged at one end of the sampling tube 210, a telescopic mechanism 400 is arranged near the inside of the flue 100 at one end of the tube body 300, the telescopic mechanism 400 includes: a tube body 3 410; the tube body 3 410 is a plurality of sections, which are respectively sleeved and connected, a tube body 420 is arranged on the outer wall of the tube body 3 410, an adjustment component 500 is arranged on the outer wall of the tube body 3 410, and the adjustment component 500 is used to change the length of the multi-section tube body 3 410.

[0043] Specifically, when sampling pollutants in the flue 100, the sampling tube 210 is inserted into the tube body 300. The user can control the adjustment component 500, and the adjustment component 500 can control and adjust the length of the multi-section tube body 3 410 to adapt to the length of the flue 100. Secondly, the sampling port 240 can be connected to an external sampling device, and the pollutants enter through the tube body 420 and are finally discharged through the sampling port 240. When the telescopic mechanism 400 is purged, the purge port 230 is connected to the external device, and the inside of the tube is cleaned by compressed gas, thereby reducing corrosion inside the tube.

[0044] In some embodiments, a heating tube 310 is disposed inside the tube body 300 , and one end of the sampling tube 210 is embedded in the inner wall of the heating tube 310 .

[0045] Specifically, since the sampling distance is specific, in order to ensure the accuracy of sampling, the operation of the heating tube 310 can be selectively controlled according to the temperature of the Y-shaped sampling tube 210, so that the internal temperature of the Y-shaped sampling tube 210 is maintained at a certain value, and the temperature inside the Y-shaped sampling tube 210 can be kept warm by wrapping the tube body 300, thereby ensuring the accuracy of sampling. The heating tube 310 has a heating belt, which is not shown in the drawings and is common knowledge and will not be repeated here.

[0046] In some embodiments, a second tube body 320 is opened inside the first tube body 300 , one end of the sampling tube 210 abuts against one side of the second tube body 320 , and the caliber of the sampling tube 210 is the same as that of the second tube body 320 .

[0047] In some embodiments, the cover 220 is threadedly connected to one end of the tube 1 300 .

[0048] In some embodiments, a ring body 250 is disposed on the outer wall of the sampling tube 210 , and the ring body 250 can limit one end of the heating tube 310 .

[0049] In some embodiments, the adjustment component 500 includes: a tube body five 510 fixed to the outer wall of the tube body three 410, and a solenoid valve 520 is arranged on the tube body five 510; a telescopic tube 530 fixed to the tube body five 510, and a connecting plate 540 is fixed at one end of the telescopic tube 530, and the connecting plate 540 is connected to one end of the tube body three 410.

[0050] Specifically, when controlling the extension and retraction of the telescopic mechanism 400, the tube body three 410 and the tube body five 510 can be connected through the solenoid valve 520. At this time, by sending a certain pressure of gas into the Y-shaped sampling tube 210, part of the gas is introduced into the tube body three 410 through the tube body one 300, and the telescopic tube 530 is extended and retracted by the gas. Finally, the telescopic tube 530 will drive the multi-section tube body three 410 to extend and retract, so that the user does not need to manually adjust.

[0051] In some embodiments, the angle between tube body 1 300 and tube body 3 410 is 15 degrees.

[0052] Specifically, a certain angle is adopted to reduce the wind resistance of the tube body 410 to a certain extent.

[0053] In some embodiments, one end of the purge port 230 is connected to the pressure sampling instrument tube 110, and one end of the sampling port 240 is connected to the flow meter 120, and the flow meter 120 is connected to the regulating valve 130, the pressure gauge 140, the pressure regulating valve 150, the filter valve 160 and the gas source 170 in sequence.

[0054] Specifically, the Y-shaped sampling tube 210 has a purge port 230 and a sampling port 240. The sampling port 240 can normally sample pollutants in the flue 100. The pressure sampling instrument tube 110 can detect the pressure in the sampling tube 210. The purge port 230 is connected to the gas source 170. The gas source 170 transmits the compressed gas to the tube body 300 and the telescopic mechanism 400, and both can be purged, thereby reducing the corrosion of the tube body during long-term use and affecting the later sampling.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0056] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas pressure sampling and purging device, characterized in that: The invention comprises a flue (100) and a tube body (300) arranged on the flue (100), wherein a sampling mechanism (200) is arranged at one end of the tube body (300), wherein the sampling mechanism (200) comprises a sampling tube (210), wherein the outer wall of the sampling tube (210) is rotatably connected to a cover body (220), wherein one end of the sampling tube (210) is respectively provided with a purge port (230) and a sampling port (240), and wherein a telescopic mechanism (400) is arranged at one end of the tube body (300) near the inside of the flue (100), wherein the telescopic mechanism (400) comprises: The pipe body 3 (410) is composed of multiple sections, which are sleeved and connected respectively. The tube body four (420) is arranged on the outer wall of the tube body three (410), and the outer wall of the tube body three (410) is provided with an adjustment component (500), and the adjustment component (500) is used to change the length of the multi-section tube body three (410).

2. A flue gas pressure sampling and purging device according to claim 1, characterized in that: A heating tube (310) is arranged on the inner side of the tube body (300), and one end of the sampling tube (210) is embedded in the inner wall of the heating tube (310).

3. A flue gas pressure sampling and purging device according to claim 2, characterized in that: A second tube body (320) is provided inside the first tube body (300), one end of the sampling tube (210) is abutted against one side of the second tube body (320), and the caliber of the sampling tube (210) is the same as that of the second tube body (320).

4. A flue gas pressure sampling and purging device according to claim 3, characterized in that: The cover body (220) is threadedly connected to one end of the tube body (300).

5. A flue gas pressure sampling and purging device according to claim 4, characterized in that: The outer wall of the sampling tube (210) is provided with a ring body (250), and the ring body (250) can limit one end of the heating tube (310).

6. A flue gas pressure sampling and purging device according to any one of claims 1 to 5, characterized in that: The adjustment component (500) comprises: The fifth tube body (510) is fixed to the outer wall of the third tube body (410), and the fifth tube body (510) is provided with a solenoid valve (520); The telescopic tube (530) is fixed on the tube body five (510), and a connecting plate (540) is fixed at one end of the telescopic tube (530), and the connecting plate (540) is connected to one end of the tube body three (410).

7. A flue gas pressure sampling and purging device according to claim 6, characterized in that: The angle between the tube body one (300) and the tube body three (410) is 15 degrees.

8. The flue gas pressure sampling and purging device according to claim 6, characterized in that: One end of the purge port (230) is connected to the pressure sampling instrument tube (110), one end of the sampling port (240) is connected to the flow meter (120), and the flow meter (120) is sequentially connected to the regulating valve (130), the pressure gauge (140), the pressure regulating valve (150), the filter valve (160) and the gas source (170).

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