CN212080491U

CN212080491U - Three-way compensator for coal powder pipeline sleeve

Info

Publication number: CN212080491U
Application number: CN201922027445.XU
Authority: CN
Inventors: 丁宇; 姚圣瑜; 刘家宝
Original assignee: Jiangsu Jingcheng Machinery Manufacturing Co ltd
Current assignee: Jiangsu Jingcheng Machinery Manufacturing Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-12-04
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a buggy pipeline sleeve three-dimensional compensator, including interior sleeve pipe and outer tube, interior sleeve pipe part is located the outer tube and connects through sleeve seal clamp slidable, and the both ends of interior sleeve pipe and outer tube are provided with flexible joint. The utility model provides a buggy pipeline sleeve three-dimensional compensator forms the chamber of packing in interior sleeve pipe and the outer tube, forms the sliding seal cooperation between interior sleeve pipe and the outer tube, relies on the inner skleeve to slide in the outer tube and realizes absorbing the axis displacement, and inside and outside sheathed tube both ends respectively have a flexible clamp, but relative small-angle deformation satisfies the absorption lateral displacement. The compensation effect is good, the sealing performance is good, and the service life is long.

Description

Three-way compensator for coal powder pipeline sleeve

Technical Field

The utility model relates to a pipeline compensation technical field especially relates to a buggy pipeline sleeve three-dimensional compensator with axial length compensation and transverse angle compensation function.

Background

When a large pulverized coal boiler in the industries of electric power, metallurgy and the like operates, pulverized coal passes through a conveying pipeline and is sprayed into the boiler by a burner. Because the boiler is a suspension structure, the boiler expands downwards during operation and generates front-back and left-right transverse expansion when heated, and therefore the pulverized coal pipeline also generates three-way displacement and is generally compensated by adopting a compensator.

In the past, the metal corrugated expansion joint is adopted to solve the problems, but due to the fact that coal dust scours the corrugated pipe, the corrugated pipe is worn out prematurely, and when the boiler expansion amount is large, the expansion joint is limited in technology in axial displacement. The corrugated expansion joint can not effectively prevent the erosion of pulverized coal to the corrugated pipe, often causes powder accumulation and spontaneous combustion, leads the corrugated pipe to lose effectiveness and damage in advance, and brings serious consequences of pulverized coal leakage and environmental pollution.

An object of the utility model is to overcome the weak point among the prior art, provide a structure is new, the leakproofness is good, the compensation effect is good, long service life's buggy pipeline sleeve three-dimensional compensator.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a buggy pipeline sleeve three-way compensator, including interior sleeve pipe and outer tube, interior sleeve pipe part is located the outer tube and connects through sleeve seal clamp slidable, and the both ends of interior sleeve pipe and outer tube are provided with flexible joint.

The utility model provides a buggy pipeline sleeve three-dimensional compensator forms the chamber of packing in interior sleeve pipe and the outer tube, forms the sliding seal cooperation between interior sleeve pipe and the outer tube to make the slip of inside and outside sleeve pipe realize axial displacement. The compensation effect is good, the sealing performance is good, and the service life is long.

Further, the sleeve sealing clamp comprises a first clamp which is fixedly connected with the inner sleeve and the outer sleeve.

Further, be provided with first sealing washer in the first clamp, first sealing washer is the L type and connects interior sleeve pipe and outer tube respectively.

Further, the flexible joint comprises a connecting pipe with a boss and a second clamping hoop, and the second clamping hoop and the boss are matched and fixedly connected.

Further, be provided with the second sealing washer in the second clamp, the second sealing washer is the arch and is located between two bosss.

Further, the angular displacement of the single flexible joint is 2-4 ° and the radial displacement is 27.5-50 mm.

Further, still include the locating component of preassembling, preassemble locating component including spacing support and screw rod, screw rod and spacing support threaded connection.

Further, the end of the inner sleeve is 30-50 mm from the length of the adapter.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

fig. 2 is a schematic structural view of another perspective of an embodiment of the present invention;

fig. 3 is a partial schematic view of the seal ring assembly of fig. 1.

Detailed Description

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1-3, the three-way compensator for a coal powder pipeline sleeve according to the embodiment of the present invention includes an inner sleeve 1 and an outer sleeve 2, the inner sleeve 1 is partially located in the outer sleeve 2 and slidably connected by a sleeve sealing clamp 3, and flexible joints 4 are disposed at two ends of the inner sleeve 1 and the outer sleeve 2.

The utility model provides a buggy pipeline sleeve three-dimensional compensator forms the chamber of packing in interior sleeve pipe 1 and the outer tube 2, forms the sliding seal cooperation between interior sleeve pipe 1 and the outer tube 2 to make the inside and outside sleeve pipe 2 slide and realize axial displacement. The compensation effect is good, the sealing performance is good, and the service life is long.

Specifically, the three-way compensator for the pulverized coal pipeline sleeve in the embodiment is suitable for the environment with the working pressure of not less than 0.6-1MPa, and can work in the environment with the temperature of about 350 ℃ for a long time. In addition, the three-way compensator for the pulverized coal pipeline sleeve in the embodiment is also used in occasions with limited vertical installation space of the pipeline.

In this embodiment, the outer diameter of the inner sleeve 1 is smaller than the inner diameter of the outer sleeve 2, and the inner and outer sleeves are connected by means of a sleeve sealing band 3.

Sleeve sealing band 3 the sleeve sealing band 3 only needs 1 can be stable connection and fixed inside and outside sleeve 2. In addition, the bolt and the nut are matched to fix the sleeve sealing hoop 3.

Of course, each flexible band may be trisected or 4-trisected.

Further, the sleeve sealing clamp 3 includes a first clamp 31, and the first clamp 31 is fixedly connected to the inner sleeve 1 and the outer sleeve 2.

Further, a first sealing ring 32 is arranged in the first clamp 31, and the first sealing ring 32 is L-shaped and is respectively connected with the inner sleeve 1 and the outer sleeve 2.

Further, the flexible joint 4 comprises a connector 41 with a boss and a second clamp 42, and the second clamp 42 is fixedly connected with the boss in a matching way. The bolt 44 and nut 45 cooperate to secure the second clip 42.

Further, a second sealing ring 43 is arranged in the second clamping hoop 42, and the second sealing ring 43 is arched and is located between the two bosses.

Further, the angular displacement of the single flexible joint 4 is 2-4 ° and the radial displacement is 27.5-50 mm. Specifically, the compensator absorbs the angular displacement (radial displacement) generated by the flexible joints 4 at two ends, the single flexible joint 4 can deflect by an angle of 2-4 degrees, the generated radial displacement is about 27.5-50mm, the combination of the two flexible joints 4 can absorb the displacement of 55-100mm, and if the displacement needs to be absorbed, the larger transverse expansion can be realized by increasing the distance L1 between the two flexible joints 4.

Further, still include the location subassembly 5 of preassembling, preassemble location subassembly 5 and include spacing support 51 and screw rod 52, screw rod 52 and spacing support 51 threaded connection. So, the sealed clamp 3 of sleeve is spacing by equipment locating component 5 in advance, guarantees the positioning accuracy. In addition, a washer 54 is provided at the joint of the nut 53 and the screw 52 to increase the stability of the fixation.

Meanwhile, the inner cavities of the hoops for the preassembly positioning assembly 5 and the flexible joint 4 are provided with flexible fluororubber sealing strips, so that the connection tightness of the inner sleeve 2 and the outer sleeve 2 is further improved.

It should be noted that the preassembled locating assembly 5 is removed after field installation and adjustment.

In addition, the pre-assembly station is provided with a plurality of groups, typically 3 or 4 groups of equal parts distributed over the outer surface of the casing. In this embodiment, it is 4 equal parts.

Further, the displacement of the compensator in the axial direction depends on the relative sliding length of the inner sleeve and the outer sleeve, as shown in the figure, L2 is at least larger than the displacement by 30-50 mm.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The three-way compensator for the coal powder pipeline sleeve is characterized by comprising an inner sleeve (1) and an outer sleeve (2), wherein the inner sleeve is positioned in the outer sleeve and is connected with the outer sleeve in a sliding mode through a sleeve sealing clamp (3), and flexible joints (4) are arranged at two ends of the inner sleeve (1) and the outer sleeve (2).

2. The three-way compensator of a pulverized coal conduit sleeve as claimed in claim 1, characterized in that the sleeve sealing clamp (3) comprises a first clamp (31), the first clamp (31) fixedly connecting the inner sleeve and the outer sleeve.

3. The three-way compensator of a coal powder pipeline sleeve as claimed in claim 2, wherein a first sealing ring is arranged in the first hoop, and the first sealing ring is L-shaped and is respectively connected with the inner sleeve and the outer sleeve.

4. The three-way compensator of a pulverized coal conduit sleeve as claimed in claim 1, wherein the flexible joint comprises a connector (41) with a boss and a second clip (42), and the second clip and the boss are fixedly connected in a matching manner.

5. The three-way compensator of a pulverized coal conduit sleeve as claimed in claim 4, wherein a second sealing ring (43) is provided in the second clamp, the second sealing ring being arched and located between the two bosses.

6. The three-way compensator of a pulverized coal conduit sleeve as claimed in claim 1, wherein the angular displacement of the single flexible joint is 2-4 ° and the radial displacement is 27.5-50 mm.

7. The three-way compensator of the coal powder pipeline sleeve is characterized by further comprising a pre-assembly positioning assembly (5), wherein the pre-assembly positioning assembly (5) comprises a limiting bracket (51) and a screw rod (52), and the screw rod is in threaded connection with the limiting bracket.

8. The three-way compensator of a pulverized coal conduit sleeve as claimed in claim 1, wherein the end of the inner sleeve is 30-50 mm from the length of the adapter.