CN101706027A - Expansible diameter varying pitch in pneumatic transmission system - Google Patents
Expansible diameter varying pitch in pneumatic transmission system Download PDFInfo
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- CN101706027A CN101706027A CN200910253694A CN200910253694A CN101706027A CN 101706027 A CN101706027 A CN 101706027A CN 200910253694 A CN200910253694 A CN 200910253694A CN 200910253694 A CN200910253694 A CN 200910253694A CN 101706027 A CN101706027 A CN 101706027A
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- reducer
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- pipeline
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Abstract
The invention relates to an expansible diameter varying pitch in a pneumatic transmission system, belonging to the technical field of pneumatic ash removing. The expansible diameter varying pitch comprises a reducer pipe, a connecting pipe, a supported flange, a pipe sleeve pipe, wherein, the pipe sleeve pipe extends into the reducer pipe through the supported flange; a compaction baffle plate which fixedly passes through the pipe sleeve pipe is welded in the connecting pipe; an oil immersed asbestos packing and a pressing sleeve arranged on the pipe sleeve pipe are internally sleeved on the connecting pipe between the reducer pipe and the supported flange; the central hole of a guiding flange between the reducer pipe and the connecting pipe is matched with the pipe sleeve pipe in a sliding manner; the pressing sleeve in the invention and the compaction baffle plate in the connecting pipe extrude the oil immersed asbestos packing to extend up and down, deform and seal, thus the expansible sealing problem is solved; the pipe sleeve pipe solves blockage fluidization caused by the slowed expanding flow velocity of the reducer pipe. The expansible diameter varying pitch of the invention has simple structure and extremely strong practicability, organically combines the expansion and reducing dilatation, is suitable for reducing and expansion of a graunlar material pneumatic transmission pipeline, effectively improves the production stability and the production efficiency, and reduces the production cost.
Description
Technical field
The present invention relates to the flexible reducing joint of pipeline in a kind of air-transport system, being used for the dilatation reducing of thermal power plant's air-transport system pulverized fuel ash pipeline and the thermal expansion of pipeline stretches, also can be used for the reducing and the contraction of granular material Pneumatic conveying pipelines such as cement, agstone, aluminium powder, gesso, coal dust, belong to the pneumatic ash handling technical field.
Background technique
At present the reducing of the air-transport system pipeline used of power plant and thermal expansion are flexible at home adopts two parts independently mutually, and reducing adopts CONCENTRIC REDUCER reducing or the direct reducing of flange, extending amount employing corrugated expansion joint, sleeve slip joint or rubber expansion joint.The shortcoming one of this base part is because the swell increment of reducing point is big, need add expansion joint; The 2nd, because blocking phenomenon appears in the unexpected slack-off solid accumulation that is easy to generate of reducing point flow velocity; The 3rd, because expansion point is elastic expansion, extending amount is little uncontrollable, has only by adding expansion joint.Above-mentioned many deficiencies bring very big inconvenience for design and safety in production, and especially because of the variation of coal, the variation of the temperature difference, grey quantitative changeization, the self adaption adjustment of system is poor in thermal power plant.
Summary of the invention
The object of the invention provides the flexible reducing joint of pipeline in a kind of air-transport system, solve the expansion of existing air-transport system pipeline and two individual components that reducing sets up separately because of employing and have above-mentioned many deficiencies, realize that by the present invention reducing is integrated with expansion, change adaptive telescopic adjustment into by common elastic expansion, solve anti-blocking effectively and the design redundancyization, thereby guarantee the safe operation of air-transport system.
The objective of the invention is to be achieved through the following technical solutions, the flexible reducing joint of pipeline in a kind of air-transport system, it is characterized in that, described flexible reducing joint comprises the reducer pipe that connects successively, connecting tube, supported flange and stretches to pipe-in-pipe in the reducer pipe by supported flange, the plate washer that compresses of pipe-in-pipe is passed in solid welding in the connecting tube, compresses the oil immersion asbestos packing and the gland that are nested with in the connecting tube between plate washer and supported flange on pipe-in-pipe; The center hole and the pipe-in-pipe of the guide flange between reducer pipe and connecting tube are slidingly matched.
Pipe-in-pipe, connecting tube and reducer pipe are same center line; Hold the flange of solid welding, guide flange to be connected and fixed between reducer pipe and connecting tube separately through bolt; The flange and the supported flange of the solid welding of the connecting tube the other end are connected and fixed through bolt, and the outer end of reducer pipe and pipe-in-pipe is the solid welding adpting flange respectively.
The connecting tube axial bore is a shoulder hole, and the internal diameter that compresses the plate washer one end oil immersion asbestos packing connecting tube portion corresponding with gland is slightly larger than the internal diameter of the connecting tube that compresses the plate washer the other end.
Pipe-in-pipe stretches into the end solid welding extending amount stroke piece in the reducer pipe.
Pipe-in-pipe among the present invention links to each other with connecting tube with the oil immersion asbestos packing by supported flange, gland, supported flange and connecting tube flange fastening, make the plate washer that compresses in gland and the connecting tube push the extensional sealing up and down of oil immersion asbestos packing, solve flexible sealing problem; The guide flange of connecting tube is connected with the reducer pipe flange, the internal diameter of guide flange is slightly larger than the pipe-in-pipe external diameter and plays the slide-and-guide effect, the holding tube sleeve pipe, connecting tube, reducer pipe is on same center line. and pipe-in-pipe one end fixedly extending amount stroke piece is set the maximal dilation amount, pipe-in-pipe adopts the relevant patented technology of native system, the slow down fluidization of the obstruction that causes of the dilatation flow velocity that solves reducer pipe, during installation, with pipe-in-pipe among the present invention, the outer end of reducer pipe is connected with corresponding pipeline, the present invention is simple in structure, practicability is extremely strong, to expand and organically combine with the reducing dilatation, the reducing that is applicable to the granular material Pneumatic conveying pipeline is with flexible, effectively improve production stability and manufacturing efficiency, reduced cost of production.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure, 1 reducer pipe, 2 connecting tubes, 3 pipe-in-pipe, 4 glands, 5 supported flanges, 6 extending amount stroke pieces, 7 oil immersion asbestos packings, 8 guide flanges, 9 compress plate washer, 10 interior pipes, 11 turbulent plate washers.
Embodiment
Further specify the present invention in conjunction with the accompanying drawings and embodiments, as shown in Figure 1, the present invention is made of pipe-in-pipe 3, connecting tube 2, reducer pipe 1, extending amount stroke piece 6, oil immersion asbestos packing 7, gland 4, flange and conduit fastener; What pipe-in-pipe 3 was passed in solid weldings in the connecting tube 2 compresses plate washer 9, the connecting tube 2 interior oil immersion asbestos packings 7 that compress 5 of plate washer 9 and supported flanges are nested with on pipe-in-pipe 3 with gland 4, connecting tube 2 axial bores are shoulder hole, and the internal diameter that compresses 2 ones of the corresponding connecting tubes of plate washer 9 one end oil immersion asbestos packings 7 and gland 4 is slightly larger than the internal diameter of the connecting tube 2 that compresses plate washer 9 the other ends; The center hole and the pipe-in-pipe 3 of the guide flange 8 that reducer pipe 1 and connecting tube are 2 are slidingly matched, and pipe-in-pipe 3, connecting tube 2, reducer pipe 1 are on same center line, and 2 of reducer pipe 1 and connecting tubes hold the flange, guide flange 8 of solid welding to be connected and fixed through bolt separately; The flange of connecting tube 2 the other end solid weldings and supported flange 5 are connected and fixed through bolt, and the outer end of reducer pipe 1 and pipe-in-pipe 3 is the solid welding adpting flange respectively; Pipe-in-pipe 3 stretches in connecting tube 2 and the reducer pipe 1 pipe-in-pipe 3 one end solid welding extending amount stroke pieces 6 by supported flange 5, gland 4 with oil immersion asbestos packing 7; Pipe-in-pipe 3 is pipes 10 in the cover one in the outer tube, and the upper surface of interior pipe 10 directly links to each other with upper surface in the outer tube, the downside open pore of interior pipe 10 with fix turbulent plate washer 11.
Pipe-in-pipe 3 structures among the present invention adopt " pipe structure in the air-transport system " patented technology of affiliated unit of our company.
Claims (4)
1. the flexible reducing joint of pipeline in the air-transport system, it is characterized in that, described flexible reducing joint comprises the reducer pipe that connects successively, connecting tube, supported flange and stretches to pipe-in-pipe in the reducer pipe by supported flange, the plate washer that compresses of pipe-in-pipe is passed in solid welding in the connecting tube, compresses the oil immersion asbestos packing and the gland that are nested with in the connecting tube between plate washer and supported flange on pipe-in-pipe; The center hole and the pipe-in-pipe of the guide flange between reducer pipe and connecting tube are slidingly matched.
2. the flexible reducing joint of pipeline is characterized in that pipe-in-pipe, connecting tube and reducer pipe are same center line in the air-transport system according to claim 1; Hold the flange of solid welding, guide flange to be connected and fixed between reducer pipe and connecting tube separately through bolt; The flange and the supported flange of the solid welding of the connecting tube the other end are connected and fixed through bolt, and the outer end of reducer pipe and pipe-in-pipe is the solid welding adpting flange respectively.
3. the flexible reducing joint of pipeline in the air-transport system according to claim 1, it is characterized in that, the connecting tube axial bore is a shoulder hole, and the internal diameter that compresses the plate washer one end oil immersion asbestos packing connecting tube portion corresponding with gland is slightly larger than the internal diameter of the connecting tube that compresses the plate washer the other end.
4. the flexible reducing joint of pipeline is characterized in that pipe-in-pipe stretches into the end solid welding extending amount stroke piece in the reducer pipe in the air-transport system according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910253694A CN101706027A (en) | 2009-12-03 | 2009-12-03 | Expansible diameter varying pitch in pneumatic transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910253694A CN101706027A (en) | 2009-12-03 | 2009-12-03 | Expansible diameter varying pitch in pneumatic transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101706027A true CN101706027A (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910253694A Pending CN101706027A (en) | 2009-12-03 | 2009-12-03 | Expansible diameter varying pitch in pneumatic transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101706027A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157339A (en) * | 2013-02-06 | 2013-06-19 | 山东寿光鲁清石化有限公司 | Regenerated smoke pipeline |
| CN106151721A (en) * | 2016-07-27 | 2016-11-23 | 中国葛洲坝集团第二工程有限公司 | There is the scalable and large scale pipeline system of movable passageway |
| CN112648458A (en) * | 2020-12-22 | 2021-04-13 | 哈尔滨锅炉厂有限责任公司 | Low-friction high-reliability expansion joint for pulverized coal pipeline |
-
2009
- 2009-12-03 CN CN200910253694A patent/CN101706027A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157339A (en) * | 2013-02-06 | 2013-06-19 | 山东寿光鲁清石化有限公司 | Regenerated smoke pipeline |
| CN106151721A (en) * | 2016-07-27 | 2016-11-23 | 中国葛洲坝集团第二工程有限公司 | There is the scalable and large scale pipeline system of movable passageway |
| CN106151721B (en) * | 2016-07-27 | 2018-02-02 | 中国葛洲坝集团第二工程有限公司 | There is scalable and movable passageway large scale pipeline system |
| CN112648458A (en) * | 2020-12-22 | 2021-04-13 | 哈尔滨锅炉厂有限责任公司 | Low-friction high-reliability expansion joint for pulverized coal pipeline |
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Open date: 20100512 |