CN215065426U

CN215065426U - Seal pressure adjustable pulverized coal sampling pipe seat

Info

Publication number: CN215065426U
Application number: CN202120490278.7U
Authority: CN
Inventors: 马国伟; 马升; 李明; 马彪
Original assignee: CHN Energy Group Science and Technology Research Institute Co Ltd
Current assignee: CHN Energy Group Science and Technology Research Institute Co Ltd
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2021-12-07
Anticipated expiration: 2031-03-08

Abstract

The utility model relates to a pulverized coal sampling tube seat capable of adjusting sealing pressure, which comprises a compressed air valve, a sealing valve body, an end cover and a pulverized coal sampling joint, wherein one side of the sealing valve body is provided with a valve interface, one end of the compressed air valve is connected with the valve interface, and the other end of the compressed air valve is provided with a compressed air interface; the pulverized coal sampling connector is characterized in that one end of the pulverized coal sampling connector extends into one end of the sealing valve body and is in sliding connection with the sealing valve body, a fixing device is arranged at the end of the sealing valve body and is used for fixing the pulverized coal sampling connector and the sealing valve body, and the end cover is detachably fixed at the other end of the sealing valve body. The pulverized coal sampling tube seat can adjust the sealing pressure so as to realize dust-free pulverized coal sampling.

Description

Seal pressure adjustable pulverized coal sampling pipe seat

Technical Field

The utility model relates to an adjustable sealing pressure's buggy sample tube socket belongs to the experimental detection area of power plant boiler.

Background

In the process of a power station boiler thermodynamic test, the fineness of the pulverized coal is used as an important parameter in the process of boiler combustion adjustment and pulverizing system optimization, and the accuracy of the determination has great influence on the safety, economy and environment protection of the boiler. It is therefore often necessary to sample the coal fines to determine the fineness of the coal fines in the actual operation of the boiler.

Most of the existing pulverized coal sampling adopts the principle of constant-speed sampling, and a sampling gun is inserted into a primary air pipe for sampling, so that the sampling authenticity is increased to a certain extent; however, in the sampling process, the coal dust can be blown out, which not only pollutes the environment, but also influences the health of testers because the fine-particle coal dust is inhaled into the respiratory tract by the testers.

The existing pulverized coal sampling tube seats cannot adjust sealing pressure, but the pressure is too small to seal pulverized coal airflow, and the pressure is too large to influence test data.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the prior art, provide one kind and effectively prevent buggy sample in-process, the buggy leaks the environmental pollution who leads to and influences testing personnel's healthy outward to but regulation seal pressure's buggy sample tube socket, in order to realize dustless buggy sample.

In order to achieve the above object, the utility model provides a technical scheme does: a pulverized coal sampling tube seat capable of adjusting sealing pressure comprises a compressed air valve, a sealing valve body, an end cover and a pulverized coal sampling connector, wherein a valve interface is arranged on one side of the sealing valve body; the pulverized coal sampling connector is characterized in that one end of the pulverized coal sampling connector extends into one end of the sealing valve body and is in sliding connection with the sealing valve body, a fixing device is arranged at the end of the sealing valve body and is used for fixing the pulverized coal sampling connector and the sealing valve body, and the end cover is detachably fixed at the other end of the sealing valve body.

The technical scheme is further designed as follows: the pulverized coal sampling joint is characterized in that an annular groove is formed in the periphery of one end of the pulverized coal sampling joint, a plurality of threaded holes are formed in one end of the sealing valve body, and the sealing valve body is abutted in the annular groove and fixedly connected with the pulverized coal sampling joint after being in threaded connection with the threaded holes through bolts.

The technical scheme is further designed as follows: the width of the annular groove is larger than the diameter of the bolt.

The technical scheme is further designed as follows: the sealing valve body one end is equipped with three screw hole, and three screw hole evenly sets up along sealing valve body circumference, and sets up the radial setting of direction along sealing valve body.

The technical scheme is further designed as follows: the periphery of one end of the coal powder sampling joint is provided with an annular boss, and the annular boss is positioned between the annular boss and the end part of the coal powder sampling joint.

The technical scheme is further designed as follows: the sealing valve body comprises an outer pipe and an inner ring positioned inside the outer pipe; an annular channel is formed between the outer pipe and the inner ring and is communicated with the valve port.

The technical scheme is further designed as follows: the outer pipe is internally provided with an internal thread, the inner ring is provided with an external thread, and the outer pipe is fixed with the inner ring through the threaded connection of the internal thread and the external thread.

The technical scheme is further designed as follows: the external thread is positioned at one end of the inner ring, which is far away from the coal powder sampling joint.

The technical scheme is further designed as follows: an annular step surface is arranged at one end, close to the end cover, of the inner thread inside the outer pipe, and one end of the inner ring abuts against the step surface.

The technical scheme is further designed as follows: the end cover is connected with the other end of the sealing valve body through threads.

Compared with the prior art, the utility model beneficial effect who has does:

the utility model discloses a buggy sample tube socket accessible bolt adjustment buggy sampling joint stretches into the internal distance of seal valve, adjusts the clearance between buggy sampling joint and the seal valve body to seal pressure is adjusted according to the demand of the different buggy sample interfaces of power plant of difference.

The utility model discloses an adjustable sealing pressure's buggy sample tube socket can prevent effectively that buggy sample in-process, and the environmental pollution that the buggy leaks outward and leads to and influences the healthy of testing personnel.

Drawings

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

FIG. 2 is a schematic structural view of the sealing valve body in FIG. 1;

FIG. 3 is a schematic view of the inner ring structure of FIG. 2;

FIG. 4 is a schematic diagram of the outer tube structure of FIG. 2;

FIG. 5 is a schematic view of the coal dust sampling joint structure shown in FIG. 1;

fig. 6 is a schematic structural view of the end cap in fig. 1.

The figures of the above drawings are numbered: 1-a compressed air valve, 11-a compressed air interface, 2-a sealing valve body, 21-a valve interface, 22-a threaded hole, 23-an outer pipe, 24-an inner ring, 25-an annular channel, 26-an outer thread, 3-a pulverized coal sampling joint, 31-an annular groove, 32-an annular boss and 4-an end cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Examples

As shown in fig. 1 and fig. 2, the pulverized coal sampling pipe seat capable of adjusting sealing pressure according to the present embodiment includes a compressed air valve 1, a sealing valve body 2, an end cover 4 and a pulverized coal sampling joint 3, wherein a valve interface 21 is disposed on one side of the sealing valve body 2, one end of the compressed air valve 1 is connected to the valve interface 21, and a compressed air interface 11 is disposed at the other end of the compressed air valve 1; 3 one end of buggy sampling joint stretches into in the sealed valve body 2 from the one end of sealed valve body 2 to with sealed valve body 2 sliding connection, sealed valve body 2 this end is equipped with fixing device for fixed buggy sampling joint 3 and sealed valve body 2, 4 detachable of end cover are fixed on sealed valve body 2 other ends.

Referring to fig. 4 and 5, in this embodiment, an annular groove 31 is formed in the periphery of one end of the coal powder sampling joint 3, three threaded holes 22 are formed in one end of the sealing valve body 2, bolts are screwed in the threaded holes 22, and the sealing valve body 2 penetrates through the threaded holes 22 through the bolts and then tightly abuts against the annular groove 31 to be fixedly connected with the coal powder sampling joint 3. In this embodiment, the width of the annular groove 31 is larger than the diameter of the bolt, so that the fixed position can be adjusted within the width range of the annular groove 31 through the bolt, the length of the end of the pulverized coal sampling joint 3 extending into the sealing valve body 2 is adjusted, and the sealing pressure is adjusted. In this embodiment, the three threaded holes 22 are uniformly arranged along the circumferential direction of the sealing valve body 2, and the arrangement direction is arranged along the radial direction of the sealing valve body 2.

This embodiment is in 3 one end peripheries of buggy sampling joint are equipped with annular boss 32, ring channel 31 is located between

annular boss

32 and 3 this end tip of buggy sampling joint, and annular boss 32 can play certain limiting displacement, and after buggy sampling joint 3 stretched into 2 length exceedes the certain distance of sealed valve body, the tip of sealed valve body 2 can support annular boss 32, prevents that buggy sampling joint 3 from stretching into 2 interior length overlengths of sealed valve body.

This embodiment can also keep away from 2 one ends of sealing valve body at above-mentioned buggy sampling joint 3 and set up the screw thread reducing device, and accessible screw thread reducing is in order to adapt to the demand of different power plant's buggy sampling interface pipe diameters.

Referring to fig. 3 and 4, the left side of fig. 4 is a front sectional view of the outer tube, and the right side is a left sectional view; the sealing valve body 2 comprises an outer pipe 23 and an inner ring 24 positioned inside the outer pipe 23; the outer pipe 23 is internally provided with internal threads, the inner ring 24 is provided with external threads 26, and the outer pipe 23 is fixedly connected with the inner ring 24 through the threaded connection of the internal threads and the external threads. An annular channel 25 is formed between the outer tube 23 and the inner ring 24, and the annular channel 25 is communicated with the valve interface 21. Compressed air enters the annular channel 25 of the sealing valve body 2 from the valve port 21 on the side face to form high-speed airflow flowing into the primary air pipe, so that pulverized coal which is blown out outwards during pulverized coal sampling is sealed.

In this embodiment, because the external screw thread is located the one end of the inner ring 24 far away from the pulverized coal sampling joint 3, so that the annular channel 25 is provided with an opening at the end close to the pulverized coal sampling joint 3, in this embodiment, the outer pipe 23 and the inner ring 24 are detachable structures, and the thickness of the annular channel 25 can be adjusted by changing the inner rings 24 with different sizes, so as to adjust the gas flow velocity in the channel.

In this embodiment, an annular step surface is arranged at one end, close to the end cover 4, of the inner thread inside the outer tube 23, and one end of the inner ring 24 abuts against the step surface to limit the inner ring 24.

Referring to fig. 6, the end cap 4 is connected to the other end of the sealing valve body 2 by a screw thread in this embodiment.

Before the instrument is used, connect buggy sampling joint 3 on the air duct buggy sampling joint earlier, then connect compressed air interface 11 on the compressed air pipeline, open compressed air valve 1, compressed air gets into sealed valve body 2 and will seal up the air dust once, open end cover 4 this moment, insert buggy sampling rifle from this one side of end cover and carry out the buggy sample in the air duct once, after the sample, twist end cover 4 on sealed valve body 2 in proper order, close the compressed air valve, take off buggy sampling joint 3, take off the tube socket.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a pulverized coal sampling tube seat of adjustable sealing pressure which characterized in that: the coal dust sampling device comprises a compressed air valve, a sealing valve body, an end cover and a coal dust sampling joint, wherein a valve interface is arranged on one side of the sealing valve body, one end of the compressed air valve is connected with the valve interface, and a compressed air interface is arranged on the other end of the compressed air valve; the pulverized coal sampling connector is characterized in that one end of the pulverized coal sampling connector extends into one end of the sealing valve body and is in sliding connection with the sealing valve body, a fixing device is arranged at the end of the sealing valve body and is used for fixing the pulverized coal sampling connector and the sealing valve body, and the end cover is detachably fixed at the other end of the sealing valve body.

2. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 1, wherein: the pulverized coal sampling joint is characterized in that an annular groove is formed in the periphery of one end of the pulverized coal sampling joint, a plurality of threaded holes are formed in one end of the sealing valve body, and the sealing valve body is abutted in the annular groove and fixedly connected with the pulverized coal sampling joint after being in threaded connection with the threaded holes through bolts.

3. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 2, wherein: the width of the annular groove is larger than the diameter of the bolt.

4. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 3, wherein: the sealing valve body one end is equipped with three screw hole, and three screw hole evenly sets up along sealing valve body circumference, and sets up the radial setting of direction along sealing valve body.

5. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 4, wherein: the periphery of one end of the coal powder sampling joint is provided with an annular boss, and the annular boss is positioned between the annular boss and the end part of the coal powder sampling joint.

6. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 1, wherein: the sealing valve body comprises an outer pipe and an inner ring positioned inside the outer pipe; an annular channel is formed between the outer pipe and the inner ring and is communicated with the valve port.

7. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 6, wherein: the outer pipe is internally provided with an internal thread, the inner ring is provided with an external thread, and the outer pipe is fixed with the inner ring through the threaded connection of the internal thread and the external thread.

8. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 7, wherein: the external thread is positioned at one end of the inner ring, which is far away from the coal powder sampling joint.

9. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 8, wherein: an annular step surface is arranged at one end, close to the end cover, of the inner thread inside the outer pipe, and one end of the inner ring abuts against the step surface.

10. The seal pressure adjustable pulverized coal sampling pipe holder according to claim 1, wherein: the end cover is connected with the other end of the sealing valve body through threads.