CN212652326U - Online clear stifled device of pressure sampler - Google Patents

Abstract

The utility model discloses a pressure sampler clears up stifled device on line, including the sampler main part, the sampler main part has a sleeve, toper casing and a plurality of body, and be connected with first cylinder and second cylinder, the cylinder telescopic shaft can drive the push rod separately and successively reciprocate, drive the inside brush head separately of sampler main part and carry out the dust cleaning to sample pipeline and pressure-taking pipe way, through regularly or the untimed dust cleaning to the pipeline handle, thereby effectively avoid the pipeline blocking phenomenon to appear, the unobstructed of pipeline has been guaranteed, and the true accuracy of measured data. The labor intensity of the maintainers is reduced, the maintenance workload is reduced, and the personal safety of the maintainers is ensured.

Description

Online clear stifled device of pressure sampler

Technical Field

The utility model relates to a flue gas measurement sampling technical field specifically is a pressure sampler is clear stifled device on line.

Background

At present, in a thermal power generation pulverized coal furnace flue gas measurement system, whether the pressure accurately concerns the stable operation of a power plant, such as the pressure of a boiler furnace, the pressure of an inlet and an outlet of an air preheater, the pressure of an inlet and an outlet of electric dust removal, the pressure of an outlet of an induced draft fan and the like. These pressures are especially important in production operation, and because the field working condition environment is severe (dust is big), and is moist, the phenomenon of blocking up can appear after the anti-blocking sampling device on the market operates for a period of time, causes the pressure measurement deviation big, can not satisfy the operation of system safety and stability.

The hearth pressure, the flue gas pressure, the coal mill pressure and the primary and secondary air pressure in the thermal power generation pulverized coal furnace are important bases for normal operation of the boiler. Present power plant generally all adopts conventional stifled sampling device (built-in three-layer prevents stifled sample, automatic blowback sample or from clear ash sampler), these products are preventing even appearance on preventing stifled sample and have some effects, but not very obvious, blocking phenomenon takes place occasionally, especially fluidized bed boiler is stifled more easily, because of burning in the fluidized bed furnace hearth utilizes powerful air current to make the material flow get up and carry out abundant burning, burning in the furnace hearth utilizes powerful air current to make the material flow get up and carry out abundant burning, the material that flows blocks up sampling device more easily.

The sampling devices currently available on the market have the following problems: the anti-blocking sampling device is subjected to back flushing, pressure distortion of the sampling device can be influenced while back flushing, and real data cannot be accurately reflected. Second, the operating mode is the malleation a bit on the scene, and high temperature system blocks up the back, must dismantle the maintenance to preventing stifled sampling device, and the maintenance of equipment maintenance personnel maintenance work load is big to in-process of maintenance, can cause certain danger like high temperature scald to the maintenance staff, accidents such as coal gas poisoning, some equipment must treat to clear up after shutting down and maintain, seriously influences measured data's authenticity, causes the unstability of operating system. The disassembly-free cleaning and maintenance of the anti-blocking sampling device can not be realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure sampler is clear stifled device on line to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an online clear stifled device of pressure sampler, including the sampler main part, aforementioned sampler main part has a sleeve, aforementioned telescopic upper end intercommunication has first body, aforementioned telescopic one end is kept away from to aforementioned first body has the second body through first ring flange intercommunication, the lateral wall intercommunication of aforementioned first body has the third body, aforementioned telescopic lower extreme intercommunication has conical shell, aforementioned conical shell keeps away from aforementioned telescopic one end intercommunication has the fourth body, aforementioned fourth body keeps away from the one end of aforementioned conical shell and communicates in the lateral wall of fifth body, and aforementioned fifth body becomes an contained angle with aforementioned fourth body, the one end of aforementioned fifth body has the sixth body through second ring flange intercommunication, the other end of aforementioned fifth body has the seventh body through third ring flange intercommunication.

Furthermore, the other end of the second pipe body is connected with a first cylinder through a first connecting piece, a first push rod is arranged inside the second pipe body, one end of the first push rod is connected with a telescopic shaft of the first cylinder, the other end of the first push rod is fixedly connected with a first brush head, the first push rod is sealed with the second pipe body through a first shaft seal, and the first cylinder can push the first push rod to reciprocate back and forth;

the other end of aforementioned sixth body is connected with the second cylinder through the second connecting piece, and the inside of aforementioned sixth body is equipped with the second push rod, and the one end of aforementioned second push rod is connected with the telescopic shaft of aforementioned second cylinder, and the other end fixedly connected with second brush head of aforementioned second push rod, and aforementioned second push rod passes through the second shaft and seals with aforementioned sixth body, and aforementioned second cylinder can promote the reciprocating motion around aforementioned second push rod.

Further, the pressure transmitter is installed to the lateral wall of aforementioned third body.

Further, the inner diameter of the fifth pipe, the sixth pipe and the seventh pipe are equal.

Furthermore, the included angle formed between the fifth tube and the fourth tube is between 30 ° and 70 °.

Further, the sampler main body is made of stainless steel.

Further, the first brush head is arranged spirally on the first push rod, and the second brush head is arranged spirally on the second push rod.

Further, under the push of the first cylinder, the first brush head can reciprocate back and forth in the fourth pipe; under the push of the second cylinder, the second brush head can reciprocate back and forth in the sixth pipe body and the seventh pipe body.

Furthermore, the air source is controlled by the first air cylinder and the second air cylinder through electromagnetic valves, and the electromagnetic valves can realize local close-range and remote wireless control through controllers.

Compared with the prior art, the beneficial effects of the utility model are that: the setting of first cylinder and second cylinder through solenoid valve control cylinder air supply, the solenoid valve passes through the controller and can realize on the spot closely with long-range wireless control. Operation maintainer or operation supervision dish personnel issue dust removal instruction control solenoid valve through the controller, and the solenoid valve changes the air supply flow direction and makes the cylinder be concertina movement, and two cylinder telescopic shafts drive the push rod respectively and successively reciprocate, drive the inside brush head separately of sampler main part and clear dust, and the brush head is in the in-process that advances takes out the buggy impurity in sampling pipeline and the pressure taking pipeline to furnace, can be regularly or untimely carry out online dust removal to the sampling pipeline of sampler main part and furnace's pressure taking pipeline. Therefore, the phenomenon of dust blockage of the pipeline is effectively avoided, smoothness of the pressure measuring pipeline is guaranteed, and the accuracy of the real measured data is guaranteed.

Drawings

FIG. 1 is a schematic view of the whole structure of the online blockage removing device for the pressure sampler of the present invention;

FIG. 2 is a schematic structural diagram of the main body of the pressure sampler on-line blockage removing device of the utility model;

fig. 3 is a schematic structural view of the first brush head of the online blockage removing device for the pressure sampler of the present invention moving to the far end;

fig. 4 is a schematic structural view of the second brush head of the online blockage removing device for the pressure sampler of the present invention moving to the far end;

FIG. 5 is a schematic diagram of the electrical principle inside the controller of the online blockage removing device for a pressure sampler of the present invention;

in the figure: 1. sampler main part, 2, first ring flange, 3, second body, 4, second ring flange, 5, sixth body, 6, third ring flange, 7, seventh body, 8, first connecting piece, 9, first cylinder, 10, first push rod, 11, first brush head, 12, first shaft seal, 13, second connecting piece, 14, second cylinder, 15, second push rod, 16, second brush head, 17, second shaft seal, 18, pressure transmitter, 101, sleeve, 102, first body, 103, third body, 104, conical shell, 105, fourth body, 106, fifth body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be noted that: like reference numbers or letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Examples

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an online clear stifled device of pressure sampler, including sampler main part 1, sampler main part 1 has a sleeve 101, the upper end intercommunication of sleeve 101 has first body 102, the one end that sleeve 101 was kept away from to first body 102 has second body 3 through first ring flange 2 intercommunication, the lateral wall intercommunication of first body 102 has third body 103, the lower extreme intercommunication of sleeve 101 has toper casing 104, the one end intercommunication that sleeve 101 was kept away from to toper casing 104 has fourth body 105, the one end that toper casing 104 was kept away from to fourth body 105 communicates in the lateral wall of fifth body 106, and fifth body 106 and fourth body 105 become an contained angle, the one end of fifth body 106 has sixth body 5 through second ring flange 4 intercommunication, the other end of fifth body 106 has seventh body 7 through third ring flange 6 intercommunication.

In this embodiment, specifically: the other end of second body 3 is connected with first cylinder 9 through first connecting piece 8, the inside of second body 3 is equipped with first push rod 10, the one end of first push rod 10 is connected with the telescopic shaft of first cylinder 9, the first brush head 11 of the other end fixedly connected with of first push rod 10, first push rod 10 is sealed with second body 3 through first bearing seal 12, first cylinder 9 can promote first push rod 10 back and forth reciprocating motion, first push rod 10 includes the first brush head 11's of its tip external diameter all is less than fourth body 105's internal diameter, first cylinder 9 can promote first brush head 11 inside far-end to fourth body 105, thereby realize the mediation to fourth body 105, avoid appearing the dust blocking phenomenon.

And, the other end of sixth body 5 is connected with second cylinder 14 through second connecting piece 13, the inside of sixth body 5 is equipped with second push rod 15, the one end of second push rod 15 is connected with the telescopic shaft of second cylinder 14, the other end fixedly connected with second brush head 16 of second push rod 15, second push rod 15 seals with sixth body 6 through second shaft seal 17, second cylinder 14 can promote back and forth movement of second push rod 15, second cylinder 14 can promote the inside of the most distal end of second brush head 16 to seventh body 7, thereby realize the mediation to fifth body 106 and seventh body 7, avoid appearing the dust jam phenomenon.

In this embodiment, specifically: the outer side wall of the third pipe 103 is provided with a pressure transmitter 18, the pressure transmitter 18 can monitor the instant pressure differential value in the sampler main body 1 in real time, and is provided with the lowest pressure differential value and the highest pressure differential value, so as to realize instant alarm when the pressure is abnormal.

In this embodiment, specifically: the inner diameter of the fifth pipe body 106, the sixth pipe body 5 and the seventh pipe body 7 are equal, the fifth pipe body 106 is a sampling pipeline of the sampler main body 1, flanges are welded at two ends of the fifth pipe body, the seventh pipe body 7 is a pressure taking pipeline of a measured hearth, the inner diameters of the fifth pipe body 106, the sixth pipe body 5 and the seventh pipe body 7 are equal and are fixedly connected through flanges and flange bolts, and the coaxiality of three pipelines can be guaranteed.

In this embodiment, specifically: the included angle formed by the fifth tube 106 and the fourth tube 105 is 30-70 degrees, and the reasonable arrangement of the included angle formed by the fifth tube 106 and the fourth tube 105 can effectively reduce the dust amount of dust in the measured hearth entering the sampler main body 1.

In this embodiment, specifically: the sampler body 1 is made of stainless steel.

In this embodiment, specifically: the first brush head 11 is arranged on the first push rod 10 in a spiral shape, and the second brush head 16 is arranged on the second push rod 15 in a spiral shape, so that the best effect of pushing the air cylinder and cleaning dust can be realized.

In this embodiment, specifically: under the push of the first cylinder 9, the first brush head 11 can reciprocate back and forth in the fourth tube 105; the second brush head 16 can reciprocate back and forth in the sixth tube 5 and the seventh tube 7 under the pushing of the second cylinder 14. Referring to fig. 3 and 4, the inner position of the fourth tube 105 when the first brush head 11 is moved to the distal end and the inner position of the seventh tube 7 when the second brush head 16 is moved to the distal end are shown, respectively.

In this embodiment, specifically: the first air cylinder 9 and the second air cylinder 14 control air sources through electromagnetic valves, and the electromagnetic valves can realize local close-range and remote wireless control through controllers. As shown in fig. 5, wherein KA1 is a 14-pin intermediate relay using DC24V power; the KA2 is an electromagnetic valve using a DC24V power supply and is used for controlling the two cylinders to act sequentially at the same time; wherein, SB1/SB2 is externally led to the wiring terminal and used as an interface of the DCS control system; when the controller issues a dust cleaning instruction, the SB1 or 1R contact is closed, the electromagnetic valve acts on the two cylinders to drive the brush head to reciprocate back and forth to clean dust, when the controller stops the dust cleaning instruction, the electromagnetic valve returns to the original position, and the two cylinders also return to the initial position; the remote module can realize that the cylinder is operated by a handheld remote controller in a inching mode to do front and back telescopic motion, and the remote control distance theoretical value reaches 4000 meters.

Working principle or structure principle, during the use, the fifth body is as the sample pipeline of sampler main part, through the seventh body of third ring flange and the pressure pipeline of getting as furnace, connects fixedly with the flange bolt. The first cylinder and the second cylinder control the air source through the electromagnetic valve, and the electromagnetic valve can realize local close-range and remote wireless control through the controller. When daily patrolling and examining, can be regularly or untimely carry out online dust cleaning to the sampling pipeline of sampler main part and the pipeline of getting of furnace. The operation maintainer or operation supervision personnel assign the dust removal command control solenoid valve through the controller, and the solenoid valve changes the air supply flow direction and makes the cylinder be concertina movement, and two cylinder telescopic shafts drive the push rod separately and successively reciprocate, drive the inside brush head separately of sampler main part and clear dust, and the brush head is in the in-process that advances and is taken out to furnace with the buggy impurity in sampling pipeline and the pressure pipeline to the unobstructed of pipeline has been guaranteed, and the true accuracy of measured data.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a clear stifled device of pressure sampler on line, includes sampler main part (1), its characterized in that: the sampler main body (1) is provided with a sleeve (101), the upper end of the sleeve (101) is communicated with a first pipe body (102), one end, far away from the sleeve (101), of the first pipe body (102) is communicated with a second pipe body (3) through a first flange plate (2), the outer side wall of the first pipe body (102) is communicated with a third pipe body (103), the lower end of the sleeve (101) is communicated with a conical shell (104), one end, far away from the sleeve (101), of the conical shell (104) is communicated with a fourth pipe body (105), one end, far away from the conical shell (104), of the fourth pipe body (105) is communicated with the outer side wall of a fifth pipe body (106), an included angle is formed between the fifth pipe body (106) and the fourth pipe body (105), one end of the fifth pipe body (106) is communicated with a sixth pipe body (5) through a second flange plate (4), and the other end of the fifth pipe body (106) is communicated with a seventh pipe body (7) through a third flange plate (6).

2. The online blockage removing device for the pressure sampler according to claim 1, wherein: the other end of the second pipe body (3) is connected with a first air cylinder (9) through a first connecting piece (8), a first push rod (10) is arranged inside the second pipe body (3), one end of the first push rod (10) is connected with an expansion shaft of the first air cylinder (9), the other end of the first push rod (10) is fixedly connected with a first brush head (11), the first push rod (10) is sealed with the second pipe body (3) through a first shaft seal (12), and the first air cylinder (9) can push the first push rod (10) to move back and forth;

the other end of sixth body (5) is connected with second cylinder (14) through second connecting piece (13), the inside of sixth body (5) is equipped with second push rod (15), the one end of second push rod (15) with the telescopic shaft of second cylinder (14) is connected, the other end fixedly connected with second brush head (16) of second push rod (15), second push rod (15) through second shaft seal (17) with sixth body (5) are sealed, second cylinder (14) can promote second push rod (15) back and forth reciprocating motion.

3. The online blockage removing device for the pressure sampler according to claim 1, wherein: and a pressure transmitter (18) is arranged on the outer side wall of the third pipe body (103).

4. The online blockage removing device for the pressure sampler according to claim 1, wherein: the inner diameter sizes of the fifth pipe body (106), the sixth pipe body (5) and the seventh pipe body (7) are equal.

5. The online blockage removing device for the pressure sampler according to claim 1, wherein: the included angle formed by the fifth pipe body (106) and the fourth pipe body (105) is 30-70 degrees.

6. The online blockage removing device for the pressure sampler according to claim 1, wherein: the sampler main body (1) is made of stainless steel.

7. The online blockage removing device for the pressure sampler according to claim 2, characterized in that: the first brush head (11) is arranged on the first push rod (10) in a spiral shape, and the second brush head (16) is arranged on the second push rod (15) in a spiral shape.

8. The online blockage removing device for the pressure sampler according to claim 2, characterized in that: the first brush head (11) can reciprocate back and forth in the fourth pipe body (105) under the pushing of the first air cylinder (9); the second brush head (16) can reciprocate back and forth in the sixth pipe body (5) and the seventh pipe body (7) under the pushing of the second air cylinder (14).

9. The online blockage removing device for the pressure sampler according to claim 2, characterized in that: the first air cylinder (9) and the second air cylinder (14) control air sources through electromagnetic valves, and the electromagnetic valves can realize local close-range and remote wireless control through controllers.

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