A flue gas sampling device for a coal-fired boiler of a generator set

Abstract

The present invention relates to the technical field of boiler flue gas sampling, specifically to a flue gas sampling device for a coal-fired boiler of a generator set, including a conversion component for replacing a gas storage cylinder, the conversion component including a first valve core arranged inside an air inlet, a round rod fixedly installed on the surface of the first valve core, a rotating rod inserted inside the round rod, a second valve core fixedly installed on one end of the rotating rod, an arc-shaped groove opened on the surface of the rotating rod, both ends of the groove are connected with an annular groove, the annular groove near one side of the base is slidably connected to multiple groups of sliding rods, the ends of the multiple groups of sliding rods away from each other are fixedly connected to a disc, the surface of the rotating rod is rotatably connected to a first rotating disk, and one side of the first rotating disk is fixedly connected to a second rotating disk through a symmetrically arranged telescopic rod. The present invention enables the gas storage cylinder to be automatically replaced through the coordinated use of various components, saving collection time and accelerating collection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of boiler flue gas sampling, in particular to a flue gas sampling device for a coal-fired boiler of a generator set. Background Art

[0002] In the thermal power generation industry, coal-fired boilers are the main thermal power equipment, and their operating efficiency and environmental performance are directly related to the economy and environmental friendliness of power production. Coal-fired boilers produce a large amount of flue gas during the combustion process, which contains a variety of pollutants, such as sulfur dioxide, nitrogen oxides, carbon monoxide and particulate matter. Accurately measuring the content of these pollutants is crucial for evaluating boiler combustion efficiency, optimizing the combustion process and ensuring environmentally friendly emissions. In the flue gas sampling process of coal-fired boilers, when the flue cross-section is regular in shape and size, and the flue gas flow shows good uniformity, a typical position that can fully represent the flue gas characteristics of the entire flue is usually selected, and repeated sampling is performed at this position. This can reduce the number of sampling points to optimize the sampling process and improve sampling efficiency, while ensuring that the collected samples can accurately reflect the overall condition of the flue gas.

[0003] However, in the process of multiple sampling at the selected location, the gas tank needs to be replaced multiple times to collect samples for each sampling. However, multiple replacement of the gas tank not only increases the complexity of the operation, but may also cause interruption of the sampling process, thereby extending the overall sampling time to a certain extent and affecting work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a flue gas sampling device for a coal-fired boiler of a generator set, so as to solve the problem that multiple replacements of gas storage tanks in the prior art proposed in the above background technology not only increase the complexity of operation, but may also cause interruption of the sampling process, thereby prolonging the overall sampling time to a certain extent and affecting work efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flue gas sampling device for a coal-fired boiler of a generator set, comprising a shell, a base is provided on one side of the shell, an air inlet is fixedly installed on one end of the base, the air inlet is connected to multiple groups of second air pipes, and the second air pipes are inserted inside the base, multiple groups of air storage cylinders are provided between the shell and the base, and one end of the multiple groups of air storage cylinders is respectively connected to the multiple groups of second air pipes, the inner wall of the air storage cylinder is slidably matched with a movable disk, a strip plate is provided on one side of the movable disk, and two groups of top rods are symmetrically installed on the surface of the strip plate;

[0006] And a conversion assembly for replacing an air cylinder, the conversion assembly comprises a first valve core arranged inside the air inlet, a round rod is fixedly installed on the surface of the first valve core, and the round rod penetrates the base, a rotating rod is inserted into the inside of the round rod, a second valve core is fixedly installed on one end of the rotating rod, an arc-shaped groove is opened on the surface of the rotating rod, both ends of the groove are connected with an annular groove, the annular groove close to the base side is slidably connected to the inside of a plurality of groups of sliding rods, the ends of the plurality of groups of sliding rods away from each other are fixedly connected with a disc, the surface of the rotating rod is rotatably connected with a first rotating disc, one side of the first rotating disc is fixedly connected with a second rotating disc via a symmetrically arranged telescopic rod, and the surfaces of the first rotating disc and the second rotating disc are fixedly connected with a placement ring via a connecting rod.

[0007] Furthermore, the interior of the shell is connected with an air outlet, and the air outlet is connected with multiple groups of first air pipes, and the multiple groups of first air pipes are respectively connected with multiple groups of air storage cylinders.

[0008] Furthermore, two sets of limit strips are symmetrically installed on the surface of the rotating rod, and the limit strips are arranged inside the limit grooves symmetrically opened on the inner wall of the round rod. The end of the rotating rod is elastically connected to the inner wall of the round rod through a connecting spring, and a convex rod is fixedly installed on the surface of the rotating rod.

[0009] Furthermore, the second valve core is arranged inside the air outlet, the second valve core is communicated with the air outlet, and the second valve core is communicated with the first air pipe.

[0010] Furthermore, the disc is sleeved on the surface of the first air pipe, and the disc is elastically connected to the shell via a first return spring.

[0011] Furthermore, a circular groove is provided inside the first rotating disk, a clamping groove is provided on the inner wall of the circular groove, and an annular notch is provided on the inner wall of the first rotating disk, and the notch is slidably matched with the protruding rod.

[0012] Furthermore, the second turntable is rotatably connected to the surface of the round rod, and the second turntable is fixedly connected to the base. The placement ring is a U-shaped structure, and an extrusion groove is provided on the inner wall of the placement ring close to the first air pipe, and the extrusion groove is opened from deep to shallow.

[0013] Furthermore, it also includes a release component for releasing the fixation of the air cylinder, the release component includes a clamping strip arranged inside the extrusion groove, a limiting rod is fixedly installed on the outer arc surface of the clamping strip, and one end of the limiting rod penetrates the connecting rod and extends to the inside of the circular groove, and one end of the limiting rod is elastically connected to the circular groove through a second return spring, one end of the limiting rod is provided with a deep groove, the inner wall of the deep groove is symmetrically provided with two groups of symmetrically arranged through grooves, the inner wall of the through groove is elastically rotatably connected with a clamping strip, the inside of the deep groove is elastically connected with a driven rod, the inside of the driven rod is symmetrically elastically connected with a fixing rod, and the fixing rod is in contact with the clamping strip.

[0014] Furthermore, the card strip is arranged inside the card slot, and the card strip is snap-fitted with the card slot.

[0015] Furthermore, one end of the driven rod extends to the inside of the slot, and an end surface of the driven rod is provided with an arc surface, and the driven rod is extrusion-fitted with the convex rod.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] 1. The present invention provides a rotating rod, a groove, a sliding rod and other components that cooperate with each other, and then through the cooperation between the sliding rod and the groove, the rotating rod can drive the round rod to rotate synchronously, and then drive the first valve core and the second valve core to rotate respectively, thereby changing the first air pipe and the second air pipe connected to the first valve core and the second valve core, so as to realize sampling of different air cylinders, avoid multiple replacement of air cylinders, make the operation simpler, save sampling time, and improve work efficiency.

[0018] 2. The present invention provides the clamping strip, the clamping strip and the fixing rod and other parts that cooperate with each other, so that when the rotating rod rotates, the convex rod will be driven to rotate synchronously, and the driven rod one end of which is located inside the recess will be squeezed, so that the driven rod moves toward the inside of the deep groove, and the fixing rod elastically installed inside the driven rod will be squeezed by the clamping groove and the limit rod and begin to shrink, so that the clamping strip begins to return to its original state and under the action of the second return spring, the limit rod begins to extend, pushes out the gas storage cylinder that has completed sampling, and releases the fixation, so as to achieve the purpose of convenient removal and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the planar structure;

[0023] Figure 4 It is a partial structural schematic diagram of the conversion component of the present invention;

[0024] Figure 5 It is a schematic diagram of the structural distribution of the conversion component and the release component of the present invention;

[0025] Figure 6 It is a schematic diagram of the planar structure of the placement ring and the extrusion groove of the present invention;

[0026] Figure 7 for Figure 5 A schematic diagram of the enlarged structure in the middle.

[0027] In the figure: 1, housing; 101, air outlet; 102, first air pipe; 2, base; 201, air inlet; 202, second air pipe; 3, conversion assembly; 301, first valve core; 302, round rod; 303, rotating rod; 3031, limit strip; 3032, connecting spring; 3033, convex rod; 304, second valve core; 305, groove; 306, annular groove; 307, sliding rod; 308, disc; 309, first rotating disc; 301, first valve core; 302, round rod; 303, rotating rod; 3031, limit strip; 3032, connecting spring; 3033, convex rod; 304, second valve core; 305, groove; 306, annular groove; 307, sliding rod; 308, disc; 309, first rotating disc; 309, first rotating disc; 301, first valve core ... 091, circular groove; 3092, card slot; 3093, notch; 310, telescopic rod; 311, second turntable; 312, connecting rod; 313, placement ring; 314, extrusion groove; 4, release assembly; 401, clamping strip; 402, limit rod; 403, deep groove; 404, through groove; 405, card strip; 406, driven rod; 407, fixed rod; 5, air cylinder; 501, movable disk; 502, strip plate; 503, push rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] The present invention will be further described below in conjunction with the embodiments.

[0030] Embodiment: A flue gas sampling device for a coal-fired boiler of a generator set, such as Figure 1-Figure 7 As shown, it includes an outer shell 1, and the interior of the outer shell 1 is connected to an air outlet 101, and the air outlet 101 is connected to a negative pressure device to facilitate smoke sampling; the air outlet 101 is connected to multiple groups of first air pipes 102, and by setting multiple groups of first air pipes 102, it can play a role in transmitting gas, so as to achieve the purpose of multiple sampling; a base 2 is provided on one side of the outer shell 1, and an air inlet 201 is fixedly installed at one end of the base 2, and the air inlet 201 is set so that smoke can enter from the inside; the air inlet 201 is connected to multiple groups of second air pipes 202, and the second air pipes 202 are inserted into the interior of the base 2, and by setting the second air pipes 202, it can play a role in conveying gas.

[0031] Among them, multiple groups of gas cylinders 5 are arranged between the shell 1 and the base 2, and one end of the multiple groups of gas cylinders 5 are respectively connected to the multiple groups of second air pipes 202, and the other end of the gas cylinder 5 is connected to the first air pipe 102, so that the smoke can enter the interior of the gas cylinder 5; it is worth noting that the position where the gas cylinder 5 is connected to the first air pipe 102 and the second air pipe 202 is provided with a one-way valve, and the one-way valve can only be opened in the direction of the shell 1;

[0032] Combined with Figure 1 -Attached Figure 7 By setting a conversion component 3 for replacing the gas cylinder 5, after the smoke collection of one group of gas cylinders 5 is completed, it is convenient to switch to another group of gas cylinders 5 to start smoke collection, saving collection time and improving collection efficiency; the conversion component 3 includes a first valve core 301 arranged inside the air inlet 201, and the first valve core 301 is connected to any group of second air pipes 202 to facilitate the transportation of smoke; a round rod 302 is fixedly installed on the surface of the first valve core 301, and the round rod 302 penetrates the base 2. By setting the round rod 302, the position of the first valve core 301 can be fixed, and the first valve core 301 can also be driven to rotate.

[0033] Among them, a rotating rod 303 is inserted into the inside of the round rod 302. By setting the rotating rod 303, it can play a role of connection and limitation, so that the round rod 302 can move synchronously with the rotating rod 303; two groups of limiting strips 3031 are symmetrically installed on the surface of the rotating rod 303, and the limiting strips 3031 are arranged inside the limiting grooves symmetrically opened on the inner wall of the round rod 302. By setting the limiting strips 3031, it can be ensured that the rotating rod 303 can drive the round rod 302 to rotate synchronously when it rotates; the end of the rotating rod 303 is elastically connected to the inner wall of the round rod 302 through a connecting spring 3032. By setting the connecting spring 3032 and cooperating with the limiting strip 3031, the rotating rod 303 can be extended and retracted inside the round rod 302, so that the device can use air cylinders 5 of different specifications, thereby increasing the practicality of the device; a convex rod 3033 is fixedly installed on the surface of the rotating rod 303. By setting the convex rod 3033, it can rotate synchronously with the rotating rod 303 to play a squeezing role.

[0034] Among them, a second valve core 304 is fixedly installed at one end of the rotating rod 303, and the second valve core 304 is arranged inside the air outlet 101. The second valve core 304 is connected to the air outlet 101, and the second valve core 304 is connected to the first air pipe 102. By setting the second valve core 304, the air inside the air storage cylinder 5 connected to the second valve core 304 can be sucked and discharged to the outside under the action of the negative pressure device and through the first air pipe 102; it is worth noting that when the internal air of the air storage cylinder 5 is sucked, the air pressure on one side of the air storage cylinder 5 separated by the movable plate 501 will decrease, and the other side of the air storage cylinder 5 is connected to the smoke pipe, so the smoke will begin to enter the interior of the air storage cylinder 5 under the action of pressure;

[0035] The surface of the rotating rod 303 is provided with an arc-shaped groove 305, which can play a driving role by setting the groove 305; it is worth noting that the angle between the head and the tail of the groove 305 is ninety degrees, that is, when the end of the groove 305 rotates to the head end position, the rotating rod 303 needs to rotate ninety degrees; both ends of the groove 305 are connected with an annular groove 306, which can play a limiting role by setting the annular groove 306; the inner sliding connection of the annular groove 306 close to the side of the base 2 has multiple sets of sliding rods 307, combined with the attached Figure 4 By setting the sliding rod 307, it can slide and cooperate with the groove 305 to drive the rotating rod 303 to rotate; the ends of the multiple groups of sliding rods 307 that are away from each other are fixedly connected with a disk 308, and the disk 308 is sleeved on the surface of the first air pipe 102. By setting the disk 308, the position of the sliding rod 307 can be fixed to play a limiting role; the disk 308 is elastically connected to the housing 1 through the first return spring. By setting the first return spring, the reaction force generated by its deformation can drive the subsequent return of the sliding rod 307 and the disk 308.

[0036] Among them, the surface of the rotating rod 303 is rotatably connected to the first rotating disk 309, the interior of the first rotating disk 309 is provided with a circular groove 3091, and the inner wall of the circular groove 3091 is provided with a clamping groove 3092. By providing the clamping groove 3092, a clamping limit function can be achieved; an annular recess 3093 is provided on the inner wall of the first rotating disk 309, and the recess 3093 is slidably matched with the protruding rod 3033. One side of the first rotating disk 309 is fixedly connected to the second rotating disk 311 through a symmetrically arranged telescopic rod 310. By setting the telescopic rod 310, a supporting and positioning function can be achieved; the second rotating disk 311 is rotatably connected to the surface of the round rod 302, and the second rotating disk 311 is fixedly connected to the base 2. By setting the second rotating disk 311, a positioning function can be achieved.

[0037] The surfaces of the first rotating disk 309 and the second rotating disk 311 are fixedly connected with a placing ring 313 through a connecting rod 312. The placing ring 313 is in a U-shaped structure. By setting the placing ring 313, the gas storage cylinder 5 is placed inside it so that the gas storage cylinder 5 can normally collect smoke; the inner wall of the placing ring 313 close to the first air pipe 102 is provided with an extrusion groove 314, which is opened from deep to shallow, and combined with the attached Figure 6 By setting the extrusion groove 314, the shapes of other parts can be changed.

[0038] Combined with Figure 1 -Attached Figure 7 , and also includes a release component 4 for releasing the gas cylinder 5, so that after one group of gas cylinders 5 completes the smoke collection, the gas cylinder 5 that has completed the smoke collection can be released while the gas cylinder 5 is automatically replaced for easy removal; it is worth noting that the release component 4 can be symmetrically arranged in two groups as needed, that is, the same structure is arranged in the second turntable 311 and the placement ring 313 near the base 2, and the gas cylinder 5 is pushed out in different ways; the release component 4 includes a clamping bar 401 arranged inside the extrusion groove 314, the clamping bar 401 can be deformed, and the clamping bar 401 is flush with the end of the placement ring 313 in the initial state, and then when the gas cylinder 5 is installed inside the placement ring 313, the clamping bar 401 will be squeezed into the inside of the extrusion groove 314, and as the shape of the extrusion groove 314 changes, the clamping bar 401 can be deformed and fit the gas cylinder 5, clamping and fixing the gas cylinder 5, so that the gas cylinder 5 remains stable during the smoke collection process;

[0039] The outer arc surface of the clamping bar 401 is fixedly mounted with a limiting rod 402, and one end of the limiting rod 402 penetrates the connecting rod 312 and extends to the inside of the circular groove 3091, and one end of the limiting rod 402 is elastically connected to the circular groove 3091 through a second return spring. By setting the limiting rod 402, the clamping bar 401 can be limited. At the same time, by setting the second return spring, when the clamping bar 401 moves to the inside of the extrusion groove 314, the limiting rod 402 will be driven to compress the return spring and generate a reaction force to facilitate subsequent resetting. One end of the limiting rod 402 is provided with a deep groove 403, which can play a role of guidance and limitation.

[0040] Among them, the inner wall of the deep groove 403 is symmetrically provided with two groups of symmetrically arranged through grooves 404, which can play a guiding and limiting role; the inner wall of the through groove 404 is elastically rotatably connected with a clamping strip 405, which is arranged inside the clamping groove 3092, and the clamping strip 405 and the clamping groove 3092 are clamped and matched. By setting the clamping strip 405, when the clamping strip 401 enters the inside of the extrusion groove 314, the clamping strip 405 will enter the inside of the clamping groove 3092 to fix the clamping strip 401 and the limiting rod 402; the inside of the deep groove 403 is elastically connected with a driven rod 406, one end of which It extends to the interior of the slot 3092, and an arc surface is provided on one end surface of the driven rod 406, and the driven rod 406 is squeezed and matched with the convex rod 3033. By setting the driven rod 406 and providing the arc surface on the surface of the driven rod 406, it can move toward the interior of the deep groove 403 under the squeezing of the convex rod 3033; the interior of the driven rod 406 is symmetrically and elastically connected with a fixing rod 407, and the fixing rod 407 is in contact with the clamping strip 405. By setting the fixing rod 407, the clamping strip 405 can be lifted up, so that the clamping strip 405 can enter the interior of the slot 3092 and fix the limit rod 402.

[0041] Combined with Figure 1 -Attached Figure 7 The inner wall of the gas storage cylinder 5 is slidably matched with a movable disk 501. By setting the movable disk 501, the gas storage cylinder 5 can be divided into two parts, so that when sampling the smoke, the smoke can be absorbed by its movement, and it can also play a squeezing role; a strip plate 502 is provided on one side of the movable disk 501, and two groups of push rods 503 are symmetrically installed on the surface of the strip plate 502. By setting the strip plate 502 and the push rod 503, when the movable disk 501 moves, the strip plate 502 and the push rod 503 can be squeezed, so that the push rod 503 extends from the inside of the gas storage cylinder 5 and acts on the disc 308, so that the disc 308 can move and drive the sliding rod 307 to move synchronously.

[0042] Specifically, when collecting the flue gas from the coal-fired boiler of the generator set, the rotating rod 303 is stretched outward according to the specifications of the gas cylinder 5, and then multiple gas cylinders 5 are placed in the placement ring 313 in turn, and pressed inward, so that the clamping strip 401 and the limiting rod 402 move synchronously. In the process of the clamping strip 401 entering the extrusion groove 314, the clamping strip 401 begins to deform and fits the surface of the gas cylinder 5 due to the change in the shape of the extrusion groove 314, so that the gas cylinder 5 remains stable during the process of collecting flue gas; during the installation of the gas cylinder 5, the limiting rod 402 will compress the second return spring and drive the clamping strip 405 to move to the top of the clamping groove 3092, and under the action of the fixing rod 407 which is in a compressed state in the initial state, the clamping strip 405 is pushed out and enters the inside of the clamping groove 3092, thereby limiting the limiting rod 402 and the clamping strip 401 to ensure the stability of the gas cylinder 5;

[0043] After the gas cylinder 5 is installed, the air inlet 201 is connected to the smoke channel, and then the negative pressure device is started to extract the gas inside any group of gas cylinders 5 connected to the second valve core 304, so that the air pressure inside the gas cylinder 5 begins to decrease, and the smoke begins to enter from the air inlet 201 and the first valve core 301, and is transported through the second air pipe 202, and the one-way valve is opened, so that the smoke begins to enter the interior of the gas cylinder 5 and pushes the movable disk 501 to move horizontally. When the gas cylinder 5 is about to complete the smoke collection, the movable disk 501 will begin to approach the strip plate 502 and squeeze it, so that the strip plate 502 drives the top rod 503 to extend and act on the disc 308, and the disc 308 begins to slide on the surface of the first air pipe 102 and drives the slide bar 307 to move synchronously;

[0044] The movable slide bar 307 will start to move from the head end of the groove 305 to the inside of the annular groove 306 connected to the end of the groove 305, so that the rotating rod 303 starts to rotate and drives the round rod 302 to rotate synchronously, and then starts to drive the first valve core 301 and the second valve core 304 to start to rotate synchronously, changing the first air pipe 102 and the second air pipe 202 connected to the first valve core 301 and the second valve core 304, so as to achieve the purpose of replacing the air storage cylinder 5, save collection time, and improve collection efficiency;

[0045] When the gas cylinder 5 is replaced, the rotating rotating rod 303 will drive the protruding rod 3033 to start rotating inside the recess 3093 and squeeze the driven rod 406, so that the driven rod 406 starts to drive the fixing rod 407 to move synchronously. During the movement of the fixing rod 407, it will be squeezed by the inner wall of the card slot 3092 and the deep groove 403 and begin to shrink, so that the card strip 405 starts to return to its original position, and under the action of the second reset spring, the limit rod 402 starts to drive the clamping bar 401 to reset, and the collected gas cylinder 5 starts to be pushed out and released for easy removal and replacement.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flue gas sampling device for a coal-fired boiler of a generator set, comprising a housing (1), a base (2) being provided on one side of the housing (1), an air inlet (201) being fixedly mounted on one end of the base (2), the air inlet (201) being connected to a plurality of groups of second air pipes (202), and the second air pipes (202) being inserted into the interior of the base (2), characterized in that: A plurality of gas cylinders (5) are provided between the housing (1) and the base (2), and one end of the plurality of gas cylinders (5) is respectively connected to the plurality of second gas pipes (202); a moving disk (501) is slidably fitted on the inner wall of the gas cylinder (5); a strip plate (502) is provided on one side of the moving disk (501); and two groups of push rods (503) are symmetrically mounted on the surface of the strip plate (502); and a conversion assembly (3) for replacing an air storage cylinder (5), the conversion assembly (3) comprising a first valve core (301) arranged inside an air inlet (201), a round rod (302) being fixedly mounted on the surface of the first valve core (301), and the round rod (302) passing through a base (2), a rotating rod (303) being inserted inside the round rod (302), a second valve core (304) being fixedly mounted on one end of the rotating rod (303), an arc-shaped groove (305) being provided on the surface of the rotating rod (303), and both ends of the groove (305) being connected to an annular groove (306), the annular groove (306) on one side close to the base (2) is internally slidably connected with a plurality of groups of sliding rods (307), and the ends of the plurality of groups of sliding rods (307) that are away from each other are fixedly connected with a disk (308), the surface of the rotating rod (303) is rotatably connected with a first rotating disk (309), one side of the first rotating disk (309) is fixedly connected with a second rotating disk (311) via a symmetrically arranged telescopic rod (310), and the surfaces of the first rotating disk (309) and the second rotating disk (311) are both fixedly connected with a placement ring (313) via a connecting rod (312).

2. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 1, characterized in that: The interior of the housing (1) is connected to an air outlet (101), the air outlet (101) is connected to a plurality of groups of first air pipes (102), and the plurality of groups of first air pipes (102) are respectively connected to a plurality of groups of air storage cylinders (5).

3. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 1, characterized in that: Two groups of limit bars (3031) are symmetrically mounted on the surface of the rotating rod (303), and the limit bars (3031) are arranged inside limit grooves symmetrically opened on the inner wall of the round rod (302). The end of the rotating rod (303) is elastically connected to the inner wall of the round rod (302) via a connecting spring (3032), and a convex rod (3033) is fixedly mounted on the surface of the rotating rod (303).

4. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 1, characterized in that: The second valve core (304) is arranged inside the air outlet hole (101), the second valve core (304) is connected to the air outlet hole (101), and the second valve core (304) is connected to the first air pipe (102).

5. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 4, characterized in that: The disc (308) is sleeved on the surface of the first air pipe (102), and the disc (308) is elastically connected to the housing (1) via a first return spring.

6. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 1, characterized in that: A circular groove (3091) is provided inside the first rotating disk (309), a clamping groove (3092) is provided on the inner wall of the circular groove (3091), and an annular notch (3093) is provided on the inner wall of the first rotating disk (309), and the notch (3093) is slidably matched with the protruding rod (3033).

7. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 1, characterized in that: The second rotating disk (311) is rotatably connected to the surface of the round rod (302), and the second rotating disk (311) is fixedly connected to the base (2). The placement ring (313) is in a U-shaped structure. An extrusion groove (314) is provided on the inner wall of the placement ring (313) close to the first air pipe (102), and the extrusion groove (314) is opened from deep to shallow.

8. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 1, characterized in that: The device also includes a release assembly (4) for releasing the fixation of the gas storage cylinder (5), the release assembly (4) including a clamping strip (401) disposed inside the extrusion groove (314), a limit rod (402) being fixedly mounted on the outer arc surface of the clamping strip (401), one end of the limit rod (402) penetrating through the connecting rod (312) and extending into the inside of the circular groove (3091), and one end of the limit rod (402) being elastically connected to the circular groove (3091) via a second return spring. A deep groove (403) is formed at one end of the limiting rod (402); two groups of symmetrically arranged through grooves (404) are symmetrically formed on the inner wall of the deep groove (403); a clamping strip (405) is elastically rotatably connected to the inner wall of the through groove (404); a driven rod (406) is elastically connected inside the deep groove (403); a fixing rod (407) is symmetrically elastically connected inside the driven rod (406); and the fixing rod (407) is in contact with the clamping strip (405).

9. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 8, characterized in that: The clamping strip (405) is arranged inside the clamping slot (3092), and the clamping strip (405) and the clamping slot (3092) are clamped and matched.

10. The flue gas sampling device for a coal-fired boiler of a generator set according to claim 8, characterized in that: One end of the driven rod (406) extends to the interior of the slot (3092), and one end surface of the driven rod (406) is provided with an arc surface, and the driven rod (406) is pressed and matched with the convex rod (3033).

Images