CN218067257U - Boiler flying dust sampling device of thermal power factory - Google Patents

Abstract

The utility model belongs to the technical field of the flying dust sample, a boiler flying dust sampling device of thermal power factory is disclosed, including sampler barrel body, collection appearance section of thick bamboo, sampling tube and sampling bottle, fixed and intercommunication has the connecting pipe that is used for with the cooperation of steam soot blower air inlet hose to use on the sampler barrel body lateral wall, installs jointly on connecting pipe and the steam soot blower air inlet hose to be used for sealed seal assembly. In this application, steam soot blower inlet hose is connected with steam soot blower, sealing assembly makes and keeps sealed between connecting pipe and the steam soot blower inlet hose, the staff uses steam soot blower to sampler barrel body inner wall, collection appearance section of thick bamboo inner wall, sample tube inner wall and sampling bottle inner wall carry out steam and sweep, make with this and attach to sampler barrel body inner wall, collection appearance section of thick bamboo inner wall, the flying dust on sample tube inner wall and the sampling bottle inner wall can be cleared up, the loaded down with trivial details operation that need clear up the spare part of clearance mechanism among the traditional art has been removed, and the operation is simple and convenient, and the cleaning efficiency is improved.

Description

Boiler flying dust sampling device of thermal power factory

Technical Field

The utility model relates to a flying dust sampling technical field, in particular to boiler flying dust sampling device of thermal power factory.

Background

The fly ash sampler is also called fly ash sampling device, the fly ash sampler can sample fly ash at constant speed during production, the fly ash sampler is used for constant-speed continuous sampling of flue gas fly ash at the tail of a boiler in a power plant (station), the carbon content of the fly ash can be accurately detected, reliable basis is provided for scientific calculation of boiler thermal efficiency, the fly ash sampler has advanced working principle, real and reliable sampling, and is advanced equipment for sampling the fly ash of a new generation, and the fly ash sampler at constant speed is a novel product for replacing an impact sampler and a deposition sampler.

The utility model discloses a boiler flying dust sampling device of thermal power factory in chinese utility model patent of publication number CN215262689U, including the installation section of thick bamboo, the top intercommunication of installation section of thick bamboo has the intake pipe, the bottom intercommunication of installation section of thick bamboo has a collection appearance section of thick bamboo, the bottom fixedly connected with collar of installation section of thick bamboo inner wall, fixedly connected with cartridge filter between the top of collar and the top of installation section of thick bamboo inner wall, the bottom fixedly connected with mounting panel of collection appearance section of thick bamboo inner wall rotates between the top of installation section of thick bamboo inner wall and the top of mounting panel and is connected with the installation axle, installs the bottom on axle surface and is located the inside of a collection appearance section of thick bamboo and is provided with and scrapes grey mechanism, scrapes grey mechanism and includes the erection column, the one end and the perpendicular connection of installation axle of erection column, the other end fixedly connected with fixed cylinder of erection column, the inner wall sliding connection of fixed cylinder has the movable block, the right side fixedly connected with ejector pin of movable block, the one end of keeping away from the movable block of ejector pin runs through the fixed cylinder and extends to the outside of fixed cylinder, the one end fixedly connected with scraper blade of movable block is kept away from to the ejector pin.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: this boiler flying dust sampling device of thermal power factory, when the flying dust sample of boiler, the regulation pole rotates, the installation axle rotates, the scraper blade is at first spring, the erection column, the inner wall of tight album appearance section of thick bamboo is pasted under the combined action of movable block and ejector pin, fly ash to being attached to album appearance section of thick bamboo inner wall is cleared up, though the fly ash of album appearance section of thick bamboo inner wall must be cleared up, but the scraper blade, first spring, the erection column, spare parts surfaces such as movable block and ejector pin are the flying ash that bonds easily all, the staff has been increased to the scraper blade, first spring, the erection column, spare parts such as movable block and ejector pin carry out the degree of difficulty of clearing up.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a boiler flying dust sampling device of thermal power factory.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a thermal power factory boiler flying dust sampling device, includes the sampler barrel body, with the collection appearance section of thick bamboo of the fixed and intercommunication of sampler barrel body bottom, with the fixed sampling tube that communicates of collection appearance bobbin bottom and with the sampling bottle of sampling tube lower extreme intercommunication, fixed and communicate on the sampler barrel body lateral wall is used for the connecting pipe that uses with the cooperation of steam soot blower air inlet hose, install jointly on connecting pipe and the steam soot blower air inlet hose and be used for sealed seal assembly.

Through adopting above-mentioned technical scheme, steam soot blower inlet hose is connected with steam soot blower, seal assembly makes to keep sealed between connecting pipe and the steam soot blower inlet hose, the staff uses steam soot blower to sampler barrel inner wall, collection appearance section of thick bamboo inner wall, sample tube inner wall and sampling bottle inner wall carry out steam and sweep, with this feasible flying dust that is attached to on sampler barrel inner wall, collection appearance section of thick bamboo inner wall, on sample tube inner wall and the sampling bottle inner wall can be cleared up, the loaded down with trivial details operation that need clear up the spare part of clearance mechanism among the traditional art has been removed from, and the operation is simple and convenient, and the cleaning efficiency is improved.

Furthermore, the sealing assembly comprises an annular raised line welded on the outer wall of the connecting pipe, and the arc surface of one side of the annular raised line, which is far away from the axis of the connecting pipe, is tightly propped against the inner surface of the air inlet hose of the steam soot blower.

Through adopting above-mentioned technical scheme, steam soot blower air inlet hose adopts rubber materials to make, and steam soot blower air inlet hose internal surface supports tightly with the annular sand grip surface on the connecting pipe to this has played good anticreep effect, makes to keep sealed between connecting pipe and the steam soot blower air inlet hose, is favorable to the staff to carry out steam through steam soot blower to sampler barrel body inner wall, collection appearance section of thick bamboo inner wall, sampling pipe inner wall and sampling bottle inner wall and sweeps the operation.

Furthermore, the sealing assembly further comprises an operating ring which is sleeved on the connecting pipe and is in threaded connection with the operating ring, and a abutting sleeve which is fixed with the side wall of one side, close to the steam soot blower air inlet hose, of the operating ring, the abutting sleeve is sleeved on the outer side of the connecting pipe, the inner surface of the abutting sleeve abuts against the outer surface of the steam soot blower air inlet hose, and a flaring chamfer is formed at the intersection between the inner surface of the abutting sleeve and the side wall of one side, far away from the operating ring, of the abutting sleeve.

By adopting the technical scheme, for reducing the probability that the steam soot blower air inlet hose breaks away from the connecting pipe, the staff needs to twist the operating ring towards one side of keeping away from the sampling cylinder body, make the abutting sleeve move along with the operating ring towards one side of keeping away from the sampling cylinder body, the setting of flaring chamfer, the degree of difficulty that the abutting sleeve inner wall is connected with the steam soot blower air inlet hose has been reduced, after the abutting sleeve inner surface is abutted with the steam soot blower air inlet hose surface, under the cooperation of annular sand grip, the probability that the steam soot blower air inlet hose breaks away from the connecting pipe has been reduced, the steam soot blower is guaranteed to going on of sampling cylinder body inner wall, collection sample cylinder inner wall, sampling pipe inner wall and sampling bottle inner wall steam soot blowing work.

Furthermore, the fixed cover in the position that the connecting tube outer wall is close to the sampler barrel body is equipped with first anticreep ring, just first anticreep ring sets up in the position that the connecting tube outer wall is close to screw thread department.

Through adopting above-mentioned technical scheme, the setting of first anticreep ring has played good anticreep effect to the operating ring, has reduced the operating ring and has broken away from the probability of screw thread on the connecting pipe.

Further, a plurality of mounting grooves have evenly been seted up to the operating ring outer wall, every all install the helping hand subassembly in the mounting groove, the helping hand subassembly is including setting up the helping hand pole in the mounting groove and running through the pivot that sets up on the helping hand pole and fix, the pivot both ends rotate with the inside wall of mounting groove both sides respectively and are connected, the pivot sets up in the one end that the helping hand pole is close to annular sand grip, the installing port has all been seted up on the lateral wall of helping hand pole both sides, the epaxial torsion piece is located including the cover to the helping hand subassembly still, the one end and the installing port lateral wall of torsion piece are fixed, the other end and the mounting groove lateral wall of torsion piece are fixed, the helping hand pole keeps under the effect of torsion piece with connecting tube axis vertically state.

Through adopting above-mentioned technical scheme, helping hand pole keeps under the effect of torsion spare with the connecting tube axis vertically state to this operating ring is rotated through helping hand pole to the staff of being convenient for, has reduced the staff and has twisted the degree of difficulty of moving towards one side of keeping away from the sampling tube body with the operating ring.

Further, the torsion element is a coil spring or a torsion spring.

Through adopting above-mentioned technical scheme, coil spring or torsional spring all can provide great torsion for helping hand pole keeps and connecting tube axis vertically state under the effect of torsion spare, is favorable to the staff to rotate the operating ring through helping hand pole.

Furthermore, the position that pivot one side was kept away from to helping hand pole outer wall is overlapped and is equipped with the rubber circle, the surface that connecting pipe axis one side was kept away from to rubber circle and helping hand pole supports tightly.

Through adopting above-mentioned technical scheme, the rubber circle adopts rubber materials to make, and the rubber circle supports tightly with helping hand pole keep away from the surface on one side of the connecting pipe axis to this makes helping hand pole be located the mounting groove all the time, makes operation ring surfacing, has strengthened thermal power factory boiler flying dust sampling device's pleasing to the eye degree.

Furthermore, the surface of one side of the boosting rod, which is far away from the axis of the connecting pipe, is provided with an arc-shaped groove matched with the rubber ring.

Through adopting above-mentioned technical scheme, the setting of arc recess has played good limiting displacement to the rubber circle, has reduced the rubber circle and has taken place gliding probability towards the one side of keeping away from the sampler barrel body, is favorable to the rubber circle to carry on spacingly to a plurality of helping hand poles for helping hand pole is located the mounting groove all the time.

Furthermore, a second anti-falling ring is integrally formed at the position, close to one side of the annular convex strip, of the outer wall of the operation ring.

Through adopting above-mentioned technical scheme, the second anticreep ring has played good limiting displacement to the rubber circle, has reduced the probability that the rubber circle breaks away from the operating ring from second anticreep ring one side.

To sum up, the utility model discloses following beneficial effect has:

1. in the application, the air inlet hose of the steam soot blower is connected with the steam soot blower, the sealing assembly enables the connecting pipe and the air inlet hose of the steam soot blower to be sealed, and workers use the steam soot blower to perform steam sweeping on the inner wall of the sampling cylinder body, the inner wall of the sample collection cylinder, the inner wall of the sampling pipe and the inner wall of the sampling bottle, so that fly ash attached to the inner wall of the sampling cylinder body, the inner wall of the sample collection cylinder, the inner wall of the sampling pipe and the inner wall of the sampling bottle can be cleaned, the complex operation of cleaning parts of a cleaning mechanism in the traditional technology is avoided, the operation is simple and convenient, and the cleaning efficiency is improved;

2. in the application, the air inlet hose of the steam soot blower is made of rubber materials, and the inner surface of the air inlet hose of the steam soot blower is tightly propped against the outer surface of the annular convex strip on the connecting pipe, so that a good anti-dropping effect is achieved, the connecting pipe and the air inlet hose of the steam soot blower are kept sealed, and a worker can perform steam sweeping operation on the inner wall of the sampling cylinder body, the inner wall of the sample collection cylinder, the inner wall of the sampling pipe and the inner wall of the sampling bottle through the steam soot blower;

3. in this application, for reducing the probability that steam soot blower inlet hose breaks away from the connecting pipe, the staff need twist the operating ring towards the one side of keeping away from the sampling barrel body and move, make to support tight cover and move along with one side that the sampling barrel body was kept away from to the operating ring orientation, the setting of flaring chamfer, the degree of difficulty that support tight cover inner wall and steam soot blower inlet hose carried out the connection has been reduced, support tight cover inner surface and steam soot blower inlet hose surface support tight back, under the mating reaction of annular sand grip, the probability that steam soot blower inlet hose breaks away from the connecting pipe has been reduced, steam soot blower has been guaranteed to sampling barrel body inner wall, collection appearance section of thick bamboo inner wall, the going on of sampling pipe inner wall and sampling bottle inner wall steam soot blowing work.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic sectional structure diagram of an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is an exploded view of a partial structure in an embodiment of the invention;

fig. 5 is a schematic structural view for highlighting the power assisting assembly according to the embodiment of the present invention.

In the figure: 1. a sampling tube body; 11. a sample collection cylinder; 111. a sampling tube; 1111. sampling a bottle; 2. a connecting pipe; 21. a first anti-slip ring; 3. a seal assembly; 31. an annular rib; 32. an operating ring; 321. mounting grooves; 33. a propping sleeve; 331. flaring and chamfering; 4. a boost assembly; 41. a booster lever; 411. an installation port; 412. an arc-shaped groove; 42. a rotating shaft; 43. a torsion member; 5. a rubber ring; 6. a second anti-slip ring; 7. and an air inlet hose of the steam soot blower.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those of ordinary skill in the art without any inventive work based on the embodiments in the present application belong to the protection scope of the present application.

As shown in fig. 1-5, the present application discloses a fly ash sampling device for a boiler of a thermal power plant, which includes a sampling cylinder body 1, a sample collection cylinder 11, a sampling tube 111, a sampling bottle 1111, a connection pipe 2, a sealing assembly 3, and a boosting assembly 4. The sample collecting cylinder 11 is a funnel-shaped structure with a vertical axis, and the top of the sample collecting cylinder is fixed and communicated with the bottom of the sampling cylinder body 1. The sampling tube 111 is a vertically arranged round tubular structure, the axis of the sampling tube 111 coincides with the axis of the sample collection cylinder 11, and the upper end of the sampling tube 111 is fixed and communicated with the bottom of the sample collection cylinder 11. Sampling bottle 1111 is cylindric structure, and its top and sampling tube 111 lower extreme threaded connection, and sampling bottle 1111 top and sampling tube 111 lower extreme intercommunication.

The connecting pipe 2 is a circular tubular structure with a horizontal axis, one end of the connecting pipe is fixed and communicated with the side wall of the sampling tube body 1, and the connecting pipe 2 is used for being matched with an air inlet hose 7 of a steam soot blower. The sealing assembly 3 is mounted on the connecting pipe 2 and the steam sootblower inlet hose 7 together for maintaining the seal between the connecting pipe 2 and the steam sootblower, and the sealing assembly 3 includes an annular rib 31, an operating ring 32, and an abutting sleeve 33. Annular sand grip 31 is the ring form structure, and its axis coincides with the axis of connecting pipe 2, annular sand grip 31 with weld on 2 outer walls of connecting pipe are close to the position of steam soot blower air intake hose 7 one side, and the surface that 2 axis one side of connecting pipe were kept away from to annular sand grip 31 is bellied arc surface, the arc surface that 2 axis one side of connecting pipe were kept away from to annular sand grip 31 supports tightly with 7 internal surfaces of steam soot blower air intake hose. The operation ring 32 is a circular ring structure, the axis of the operation ring is coincident with the axis of the connection pipe 2, and the operation ring 32 is sleeved on the connection pipe 2 and connected with the connection pipe by screw threads. The abutting sleeve 33 is of a circular tubular structure, the axis of the abutting sleeve 33 is coincident with the axis of the connecting pipe 2, the abutting sleeve 33 is sleeved outside the connecting pipe 2, the end face of one side of the abutting sleeve 33 is fixed to the side wall of one side, close to the steam soot blower air inlet hose 7, of the operating ring 32, the intersection between the inner surface of the abutting sleeve 33 and the side wall, far away from the operating ring 32, of the abutting sleeve 33 is provided with a flaring chamfer 331, and the inner surface of the abutting sleeve 33 abuts against the outer surface of the steam soot blower air inlet hose 7. In the use, the staff cup joints back steam soot blower air inlet hose 7 and connecting pipe 2 outer wall, for reinforcing the leakproofness, the staff need twist the one side of keeping away from sampler barrel body 1 with the operating ring 32 orientation and moves, make to support tight cover 33 inner wall and steam soot blower air inlet hose 7 surface and support tightly, under the mating action of annular sand grip 31, with this junction to between connecting pipe 2 inner wall and the steam soot blower air inlet hose 7 outer wall has played good sealed effect, be favorable to the staff to pass through steam soot blower to sampler barrel body 1 inner wall, collection appearance section of thick bamboo 11 inner wall, sampling tube 111 inner wall and sampling bottle 1111 inner wall carry out steam and sweep the operation.

For the probability that reduces the screw thread on the operation ring 32 follow connecting pipe 2 and break away from, fixed cover is equipped with first anticreep ring 21 on the position that connecting pipe 2 outer wall is close to sampler barrel body 1, and first anticreep ring 21 sets up on the position that the outer wall of connecting pipe 2 is close to screw thread department, first anticreep ring 21 and annular sand grip 31 mating reaction, good anticreep effect has been played to operation ring 32 with this, the staff need carry out threaded connection's loaded down with trivial details again with the screw thread of operation ring 32 and connecting pipe 2 outer wall from.

In this embodiment, the outer wall of the operation ring 32 is uniformly provided with a plurality of mounting grooves 321. The assisting components 4 are provided with a plurality of groups, the number of the groups of the assisting components 4 is equal to the number of the mounting grooves 321, the positions of the assisting components 4 correspond to the positions of the mounting grooves 321 one by one, and each assisting component 4 comprises an assisting rod 41, a rotating shaft 42 and a torsion piece 43. Helping hand pole 41 is rod-shaped structure, and it sets up in mounting groove 321, and helping hand pole 41 keeps away from the one end of sampling tube body 1 and is convex, and helping hand pole 41 has all seted up mounting opening 411 on keeping away from the both sides lateral wall of sampling tube body 1 one end. The rotating shaft 42 is a round bar structure, and is disposed on the power-assisted rod 41 and fixed, the rotating shaft 42 is disposed at one end of the power-assisted rod 41 close to the annular protruding strip 31, and two ends of the rotating shaft 42 are respectively rotatably connected with the inner side walls of two sides of the mounting groove 321. The torsion member 43 is sleeved on the rotating shaft 42, one end of the torsion member 43 is fixed to the side wall of the mounting opening 411, the other end of the torsion member 43 is fixed to the side wall of the mounting groove 321, and the assisting rod 41 is kept perpendicular to the axis of the connecting pipe 2 under the action of the torsion member 43. In this embodiment, the torsion element 43 is a coil spring (in other embodiments, the torsion element 43 may also be a coil spring), and the assisting rod 41 is kept perpendicular to the axis of the connecting pipe 2 under the action of the torsion element 43, so that the operator can rotate the operating ring 32 through the assisting rod 41, and the difficulty of screwing the operating ring 32 towards the side away from the sampling tube body 1 by the operator is reduced.

For making the operating ring 32 surfacing, the position cover that helping hand pole 41 outer wall kept away from pivot 42 one side is equipped with rubber circle 5, rubber circle 5 supports tightly with helping hand pole 41 keeps away from the surface of connecting pipe 2 axis one side, and helping hand pole 41 keeps away from the surface of connecting pipe 2 axis one side and offers the arc recess 412 with rubber circle 5 complex, with this good limiting displacement has been played helping hand pole 41, make helping hand pole 41 be located mounting groove 321 all the time, it opens and makes the messy probability in operating ring 32 surface to have reduced helping hand pole 41 is automatic. In this embodiment, the second anti-drop ring 6 is integrally formed at a position on one side of the outer wall of the operating ring 32 close to the annular protruding strip 31, and the second anti-drop ring 6 has a good limiting effect on the rubber ring 5, so that the probability that the rubber ring 5 is dropped from the operating ring 32 on one side of the second anti-drop ring 6 is reduced.

The application principle of the boiler fly ash sampling device of the thermal power plant in the embodiment is as follows: in the use, the staff cup joints back with steam soot blower inlet hose 7 and 2 outer walls of connecting pipe, for reinforcing leakproofness, the staff need twist the operating ring 32 towards the one side of keeping away from sampler barrel body 1 and moves, make to support tight cover 33 inner wall and steam soot blower inlet hose 7 surface and support tightly, under the mating action of annular sand grip 31, with this junction to between 2 inner walls of connecting pipe and the steam soot blower inlet hose 7 outer wall has played good sealed effect, be favorable to the staff to pass through steam soot blower to sampler barrel body 1 inner wall, collection appearance section of thick bamboo 11 inner wall, sampling tube 111 inner wall and sampling bottle 1111 inner wall carry out steam and sweep the operation, the loaded down with trivial details operation that need clear up the spare part of clearance mechanism among the traditional art has been removed from, and easy operation is convenient, and the clearance efficiency is improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a thermal power factory boiler fly ash sampling device, includes sampler barrel body (1), with fixed collection appearance section of thick bamboo (11) of sampler barrel body (1) bottom and intercommunication, with collection appearance section of thick bamboo (11) bottom fixed and the sampling tube (111) of intercommunication and with sampling bottle (1111) of sampling tube (111) lower extreme intercommunication, characterized by: the sampling tube is characterized in that a connecting pipe (2) used in cooperation with a steam soot blower air inlet hose (7) is fixedly communicated with the side wall of the sampling tube body (1), and a sealing assembly (3) used for sealing is jointly installed on the connecting pipe (2) and the steam soot blower air inlet hose (7).

2. The boiler fly ash sampling device of the thermal power plant according to claim 1, wherein: seal assembly (3) include with weld annular sand grip (31) on connecting pipe (2) outer wall, the arc surface and the steam soot blower air inlet hose (7) internal surface of connecting pipe (2) axis one side are kept away from in annular sand grip (31) support tightly.

3. The boiler fly ash sampling device of a thermal power plant according to claim 2, wherein: the sealing assembly (3) further comprises an operating ring (32) which is sleeved on the connecting pipe (2) and is in threaded connection with the operating ring (32), and a pressing sleeve (33) which is fixed with the side wall of one side of the steam soot blower air inlet hose (7) close to the operating ring (32), wherein the connecting pipe (2) is sleeved with the pressing sleeve (33), the inner surface of the pressing sleeve (33) is pressed against the outer surface of the steam soot blower air inlet hose (7), and a flaring chamfer (331) is formed at the intersection between the inner surface of the pressing sleeve (33) and the side wall of one side of the pressing sleeve (33) far away from the operating ring (32).

4. The boiler fly ash sampling device of a thermal power plant according to claim 3, wherein: the sampling tube is characterized in that a first anti-drop ring (21) is fixedly sleeved on the position, close to the sampling tube body (1), of the outer wall of the connecting tube (2), and the first anti-drop ring (21) is arranged on the position, close to the thread, of the outer wall of the connecting tube (2).

5. The boiler fly ash sampling device of a thermal power plant according to claim 4, wherein: a plurality of mounting grooves (321) have evenly been seted up to operating ring (32) outer wall, every helping hand subassembly (4) are all installed in mounting groove (321), helping hand subassembly (4) are including setting up helping hand pole (41) in mounting groove (321) and running through pivot (42) that set up on helping hand pole (41) and fix, pivot (42) both ends rotate with the inside wall of mounting groove (321) both sides respectively and are connected, pivot (42) set up in helping hand pole (41) one end near annular sand grip (31), installing port (411) have all been seted up on the lateral wall of helping hand pole (41) both sides, helping hand subassembly (4) are still including overlapping torsion piece (43) of locating on pivot (42), the one end and the installing port (411) lateral wall of torsion piece (43) are fixed, the other end and the mounting groove (321) lateral wall of torsion piece (43) are fixed, helping hand pole (41) keep with connecting pipe (2) axis vertically state under torsion piece (43)'s effect.

6. The boiler fly ash sampling device of a thermal power plant according to claim 5, wherein: the torsion piece (43) is a coil spring or a torsion spring.

7. The boiler fly ash sampling device of a thermal power plant according to claim 5, wherein: the position that pivot (42) one side was kept away from to helping hand pole (41) outer wall is overlapped and is equipped with rubber circle (5), rubber circle (5) and helping hand pole (41) are kept away from the surface of connecting pipe (2) axis one side and are supported tightly.

8. The boiler fly ash sampling device of a thermal power plant according to claim 7, wherein: the surface of one side, away from the axis of the connecting pipe (2), of the power-assisted rod (41) is provided with an arc-shaped groove (412) matched with the rubber ring (5).

9. The boiler fly ash sampling device of a thermal power plant according to claim 7, wherein: and a second anti-falling ring (6) is integrally formed at the position of the outer wall of the operating ring (32) close to one side of the annular convex strip (31).

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