Axial External Pressure Expansion Joint

Axial External Pressure Expansion Joint


Axial external pressure type corrugated compensator is a device used for pipeline compensation, which mainly absorbs axial displacement and has the advantages of large compensation amount, good heat preservation performance and residual medium can be excluded.

Overview

Axial external pressure type corrugated compensator is a device used for pipeline compensation, which mainly absorbs axial displacement and has the advantages of large compensation amount, good heat preservation performance and residual medium can be excluded. Its working principle is to realize the compensation of thermal deformation of pipeline through the compression of corrugation, different from other types of corrugated compensator (such as axial internal pressure corrugated compensator), axial external pressure corrugated compensator relies on the compression of the corrugation to realize the compensation, there is no problem of instability of the corrugated column, the compensating capacity is large and safe and reliable.

The main advantages of axial external pressure type corrugated compensator include:

Large compensation capacity: axial outward pressure type corrugated compensator mainly absorbs axial displacement, has large compensation capacity, and can handle large displacement.

Good thermal insulation performance: due to the bellows is subject to external pressure, closed and good bending resistance, can effectively maintain the thermal insulation performance of the pipeline.

High compressive strength: the bellows is subject to external forces, high compressive strength, not easy to destabilize and destroy, safe and reliable.

Corrosion resistance: the bellows is made of SUS316L material, which has good corrosion resistance and bending fatigue strength.

Long service life: the internal setup of two-way guide tube, the pipe impurities will not enter the bellows, easy to install, long service life.

Applicable scenes and installation precautions:

Applicable Scenario: Mainly used in steam pipelines with design pressure and design temperature within a certain range to compensate for axial displacement caused by thermal expansion.

Installation precautions: The amount of compensation should be correctly calculated during installation, and the direction of the guide sleeve should be noted to ensure that the flow direction is correct when it is in a parallel relative position.

 Path DN

Length mm

 Wavenumber n    

Pressure rating MPa


The effective area of the belloes cm
2


Maximum outer diameter Size mm

0.6

1.0

1.6

Axial compensation mm         Stiffness N/mm

50

432

10

41/231

39/255

37/286

81

ф270

654

20

82/116

78/126

74/143

65

488

10

41/231

39/255

37/286

82

ф290

756

20

82/116

78/126

74/143

80

506

9

56/116

53/232

50/278

121

ф308

709

18

112/98

106/116

100/139

100

532

8

61/167

57/218

54/256

180

ф338

789

16

122/84

114/109

108/128

125

616

8

82/278

78/301

75/320

257

ф 368

966

16

164/129

156/151

150/160

150

950

8

124/125

112/154

89/330

535

ф450

1540

16

250/56

210/87

160/113

200

950

8

130/155

100/126

70/409

779

ф505

1550

16

250/75

200/113

160/205

250

1080

8

161/111

130/162

105/378

1075

ф566

1800

16

320/51

260/94

201/119

300

1090

8

161/138

130/194

100/338

1269

ф600

1820

16

320/54

260/100

200/168

350

1090

8

165/165

132/221

99/438

1619

ф676

1820

16

320/71

250/121

200/218

400

1110

8

162/164

132/290

101/468

2008

ф710

1840

16

310/76

251/145

190/268

450

1110

8

152/131

124/339

100/532

2428

ф768

1840

16

301/81

251/170

190/245

500

1475

6

190/180

150/515

150/765

3473

ф975

2450

12

371/90

300/175

300/298

600

1540

6

195/231

150/754

140/756

4766

ф1090

2540

12

391/121

290/364

280/480

700

1540

6

200/222

155/601

150/832

6068

ф1190

2540

12

400/112

300/400

290/478

800

1540

6

201/200

164/497

150/897

7528

ф1290

2540

12

400/135

321/451

299/583

900

1605

6

220/206

230/635

220/765

9328

ф1460

2685

12

430/154

460/337

442/388

1000

1605

6

220/356

230/615

220/763

11118

ф1560

2685

12

430/268

460/303

442/418

1100

1605

6

210/273

230/654

221/754

13066

ф1660

2685

12

428/187

460/347

442/414

1200

1605

6

210/308

230/757

221/832

15170

ф1760

2685

12

420/104

460/488

443/601

1300

1605

6

220/356

230/864

221/864

17432

ф1860

2685

12

410/132

450/432

435/626

1400

1605

6

212/398

231/645

226/889

19851

ф1960

2685

12

410/198

450/466

430/665

1500

1605

6

201/321

230/978

220/984

22427

ф2060

2685

12

400/187

449/422

432/665


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