CN205781650U - A kind of thermal expansion of pipeline compensation device - Google Patents

Abstract

This utility model relates to a kind of thermal expansion of pipeline compensation device, including short tube, inner sleeve, compensation ripple, air baffle ring and stopping means；Two ends outside described inner sleeve are set with 1 short tube, and the ring surface at middle part is provided with 2 and compensates ripple, compensates the annular outer structure that ripple is made up of inner side, the annular riser in 2, outside and 1 outer shroud shrouding；2 annular risers compensated inside ripple are fixed with inner sleeve respectively and are connected, and the annular riser in outside is fixing with the short tube of respective side respectively to be connected, and during stress, inner sleeve can slide axially in short tube；Set air baffle ring in the short tube of medium inflow side, in opposite side short tube, set stopping means.This utility model uses compensation ripple to be directly connected with inner sleeve, and connection reliability is high；Inner sleeve and short tube are Split type structure and the most slidably can limit inner sleeve sliding scale by stopping means, prevent respective compensation ripple deflection excessive；Its simple in construction, reliable operation, be easy to maintenance, low cost of manufacture.

Description

A kind of thermal expansion of pipeline compensation device

Technical field

This utility model relates to a kind of pipe transportation technology field, particularly relates to a kind of thermal expansion of pipeline compensation device.

Background technology

In industry pipeling design, in order to ensure that industrial pipeline the most stably and securely works, the thermal stress produced when alleviating pipeline expanded by heating, need on pipeline, arrange the compensator that can compensate for thermal expansion.

Conventional compensator has " bellow expansion joint " and " cydariform compensator ", but both compensators all also exist certain problem, such as: 1) " bellow expansion joint " price height, leak source is once produced after longtime running, cannot overhaul, can only integral replacing, cause equipment investment and maintenance cost high；2) being interior outer double-layer structure at the compensation ripple of " cydariform compensator ", weld seam is many, and the probability of existing defects is big, and infinite place device, there is the situation that respective compensation ripple deflection is excessive, affect the compensator life-span.

Summary of the invention

This utility model provides a kind of thermal expansion of pipeline compensation device, compensates ripple and is directly connected with inner sleeve, and connection reliability is high；Inner sleeve and short tube are Split type structure and the most slidably can limit inner sleeve sliding scale by stopping means, prevent respective compensation ripple deflection excessive；Its simple in construction, reliable operation, be easy to maintenance, low cost of manufacture.

In order to achieve the above object, this utility model realizes by the following technical solutions:

A kind of thermal expansion of pipeline compensation device, including short tube, inner sleeve, compensation ripple, air baffle ring and stopping means；Two ends outside described inner sleeve are set with 1 short tube, and the ring surface at middle part is provided with 2 and compensates ripple, compensates the annular outer structure that ripple is made up of inner side, the annular riser in 2, outside and 1 outer shroud shrouding；2 annular risers compensated inside ripple are fixed with inner sleeve respectively and are connected, and the annular riser in outside is fixing with the short tube of respective side respectively to be connected, and during stress, inner sleeve can slide axially in short tube；Set air baffle ring in the short tube of medium inflow side, in opposite side short tube, set stopping means.

Described air baffle ring is by keeping out the wind annular riser and the sleeve pipe that keeps out the wind forms, and annular of keeping out the wind riser is located at outside inner sleeve, keeps out the wind sleeve pipe one end and keeps out the wind that annular riser is fixing to be connected, and the other end stretches into inner sleeve one segment distance, for free end.

Described stopping means is limited block or annular stop plate, and limited block is circumferentially disposed multiple along short tube.

The axial transverse section of described outer shroud shrouding is rectangle or circular arc.

Compared with prior art, the beneficial effects of the utility model are:

Compensating ripple to be directly connected with inner sleeve, connection reliability is high；Inner sleeve and short tube are Split type structure and the most slidably can limit inner sleeve sliding scale by stopping means, prevent respective compensation ripple deflection excessive；Its simple in construction, reliable operation, be easy to maintenance, low cost of manufacture.

Accompanying drawing explanation

Fig. 1 is stereoscopic appearance figure of the present utility model.

Fig. 2 is front view of the present utility model.

Fig. 3 is I enlarged drawing in Fig. 2.

Fig. 4 is the stereoscopic appearance figure of " bellow expansion joint " described in the utility model.

Fig. 5 is the front view of " bellow expansion joint " described in the utility model.

Fig. 6 is II enlarged drawing in Fig. 5.

Fig. 7 is the stereoscopic appearance figure of " cydariform compensator " described in the utility model.

Fig. 8 is the front view of " cydariform compensator " described in the utility model.

Fig. 9 is III enlarged drawing in Fig. 8.

In figure: 1. compensate ripple 11. annular riser 12. outer shroud shrouding 2. inner sleeve 3. short tube 4. air baffle ring 41. keep out the wind annular riser 42. keep out the wind sleeve pipe 5. limited block 6. compensate ripple connecting tube 7, bellow expansion joint compensate ripple

Detailed description of the invention

Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further:

See Fig. 1-Fig. 3, be structural representation of the present utility model, this utility model one thermal expansion of pipeline compensation device, including short tube 3, inner sleeve 2, compensate ripple 1, air baffle ring 4 and stopping means；Two ends outside described inner sleeve 2 are set with 1 short tube 3, and the ring surface at middle part is provided with 2 and compensates ripple 1, compensates the annular outer structure that ripple 1 is made up of inner side, the annular riser in 2, outside 11 and 1 outer shroud shrouding 12；2 annular risers 11 compensated inside ripple are fixed with inner sleeve 2 respectively and are connected, and the annular riser 11 in outside is fixing with the short tube 3 of respective side respectively to be connected, and during stress, inner sleeve 2 can slide axially in short tube 3；Set air baffle ring 4 in the short tube 3 of medium inflow side, in opposite side short tube 3, set stopping means.

Described air baffle ring 4 is by keeping out the wind annular riser 41 and the sleeve pipe 42 that keeps out the wind forms, and annular of keeping out the wind riser 41 is located at outside inner sleeve 2, keeps out the wind sleeve pipe 42 one end and keeps out the wind that annular riser 41 is fixing to be connected, and the other end stretches into inner sleeve 2 one segment distance, for free end.

Described stopping means is limited block 5 or annular stop plate, and limited block 5 is circumferentially disposed multiple along short tube 3.

The axial transverse section of described outer shroud shrouding 11 is rectangle or circular arc.

As it is shown on figure 3, in this utility model, the effect compensating ripple 1 is the displacement being carried out extraction duct by deformation；Short tube 3 is for connecting the pipeline at two ends；Inner sleeve 2 can ensure that the structural strength of compensator；Stopping means can limit the displacement range of inner sleeve 2, is possible to prevent to compensate ripple 1 and deforms excessive；It is internal that air baffle ring 4 can prevent flow media from scurrying into compensation ripple 1, coordinates with stopping means simultaneously, can play the effect limiting inner sleeve 2 displacement range.

In this utility model, compensate ripple 1 and be welded as a whole with inner sleeve 2, both ensure that the overall tightness of compensator, be effectively protected again the Stability Analysis of Structures compensating ripple 1.Inner sleeve 2 and short tube 3 are Split type structure, and inner sleeve 2 can at short tube 3 the most slidably.

This utility model secure connection between pipeline, is connected with pipeline by both sides short tube 3, and when pipeline expanded by heating, short tube 3 can move along with the movement of two side ducts, and this deformation being displaced through compensation ripple 1 is compensated.

Each unit of compensator is provided with 2 and compensates ripple 1, in the case of needs compensate bigger swell increment, can realize bigger bit shift compensation by the form of Multilevel compensating device unit series connection.

According to different working condition, compensate ripple 1 and can select unlike material, such as carbon steel, heat resisting steel, rustless steel etc..

As Figure 4-Figure 6, it is the structural representation of " bellow expansion joint " described in the utility model." bellow expansion joint " is made up of inner sleeve 2, short tube 3 and compensation ripple 7, and it compensates ripple 7 and uses the special waveform of integral forming, compensates ripple 7 two ends and is connected with short tube 3 respectively, sets inner sleeve 2 in compensating ripple 7, and inner sleeve 2 flows into one end at medium and is connected with short tube 3.

This utility model is have the advantage that compared with " bellow expansion joint ":

1) simple in construction, easy construction, cost is low；

The compensation ripple 7 of " bellow expansion joint " generally uses stainless steel, and compensating ripple 7 need to process with special equipment equipment manufacturer, and tight to the prescription of welding, overall price is high；And compensation ripple 1 simple in construction of the present utility model, less demanding to material and processing technique, can on-the-spot welding, cost is low；

2) Maintenance and Repair are convenient；

Compensation ripple 7 thickness of " bellow expansion joint " is generally only about 1mm, and uses stainless steel, high to welding process requirement, is not suitable for Site Welding.The especially compensation ripple of part " bellow expansion joint " have employed multiple structure, further increases the difficulty of on-site maintenance maintenance.And this utility model simple in construction, to compensating, ripple 1 material is less demanding, and on-site maintenance and maintenance are convenient.

As shown in figs. 7 to 9, it is the structural representation of " cydariform compensator " described in the utility model." cydariform compensator " is made up of inner sleeve 2, short tube 3, compensation ripple 1 and compensation ripple connecting tube 6, and it compensates ripple 1 and is spliced to form waveform by polylith plate body, is connected by compensation ripple connecting tube 6, be connected with short tube 3 respectively outside compensation ripple 1 between 2 compensation ripples 1.Compensating and be correspondingly provided with inner sleeve 2 inside ripple 1, inner sleeve 2 flows into one end at medium and is connected with short tube 3.

This utility model and " cydariform compensator " phase have the advantage that:

1) rational in infrastructure, reliability is high；

The compensation ripple 1 of " cydariform compensator " is connected as a single entity by compensating ripple connecting tube 6, and forms interior outer double-layer structure between inner sleeve 2, and weld seam is many, and the probability that there is weld defect is big；This utility model is to have carried out structure improvement on the basis of " cydariform compensator ", eliminates compensation ripple connecting tube 6, compensates direct the fixing with inner sleeve 2 of ripple 1 and is connected, i.e. compensates ripple 1 and be integrated with inner sleeve 2, and the reliability therefore connected is higher；

2) it is provided with stopping means, respective compensation ripple deflection can be prevented excessive；

" cydariform compensator " does not has stopping means, there is the situation that respective compensation ripple deflection is excessive, affects the compensator life-span；This utility model is provided with stopping means, coordinates with air baffle ring 4, makes the moving range of inner sleeve 2 be restricted, and can effectively avoid the problem that respective compensation ripple 1 deflection is excessive.

The performance parameter of a kind of thermal expansion of pipeline compensation device described in the utility model is calculated as follows:

Maximum compression (or stretching) amount of each unit of compensator:

$\mathrm{\Δ}L=\frac{3\mathrm{\α}}{2}\frac{{\mathrm{\σ}}_s{d}^2}{E\mathrm{\δ}n},mm$

Wherein:

$\mathrm{\β}=\frac{d}{D}$

In above formula:

σ_sCompensate the yield strength of ripple material, MPa；

E compensates the modulus of elasticity of ripple material, MPa；

δ compensates thickness of convolution degree, mm；

D compensator internal diameter, mm；

D compensator external diameter, mm；

N safety coefficient, takes 1.1～1.5；

Side reaction coefficient one；

Beta coefficient two.

The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; according to the technical solution of the utility model and conceive equivalent or change in addition, all should contain within protection domain of the present utility model.

Claims (4)

1. a thermal expansion of pipeline compensation device, it is characterised in that include short tube, inner sleeve, compensation ripple, air baffle ring and stopping means；Two ends outside described inner sleeve are set with 1 short tube, and the ring surface at middle part is provided with 2 and compensates ripple, compensates the annular outer structure that ripple is made up of inner side, the annular riser in 2, outside and 1 outer shroud shrouding；2 annular risers compensated inside ripple are fixed with inner sleeve respectively and are connected, and the annular riser in outside is fixing with the short tube of respective side respectively to be connected, and during stress, inner sleeve can slide axially in short tube；Set air baffle ring in the short tube of medium inflow side, in opposite side short tube, set stopping means.

A kind of thermal expansion of pipeline compensation device the most according to claim 1, it is characterized in that, described air baffle ring is made up of with the sleeve pipe that keeps out the wind the annular riser that keeps out the wind, annular of keeping out the wind riser is located at outside inner sleeve, keep out the wind sleeve pipe one end and keep out the wind that annular riser is fixing to be connected, the other end stretches into inner sleeve one segment distance, for free end.

A kind of thermal expansion of pipeline compensation device the most according to claim 1, it is characterised in that described stopping means is limited block or annular stop plate, and limited block is circumferentially disposed multiple along short tube.

A kind of thermal expansion of pipeline compensation device the most according to claim 1, it is characterised in that the axial transverse section of described outer shroud shrouding is rectangle or circular arc.