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JDZ axis inward pressure corrugated compensator
Product Introduction: JDZ type axial inward pressure corrugated compensator, also known as shock-absorbing corrugated compensator, corrugated pipe, ex
Product details

Product Introduction

JDZ type axial inward pressure corrugated compensator is also commonly known as shock-absorbing corrugated compensator, corrugated pipe, expansion joint, or expansion joint. It is composed of corrugated pipes (a type of elastic element) and accessories such as end pipes, brackets, flanges, and conduits that make up its working body. Axial inward pressure corrugated compensator belongs to a type of compensation component. The JDZ type axial inward pressure corrugated compensator is mainly used to compensate for axial displacement and has the ability to compensate for angular displacement, but it is generally not used to compensate for angular displacement.



Product advantages

This product utilizes the effective expansion and contraction deformation of its working body corrugated tube to absorb dimensional changes caused by thermal expansion and contraction in pipelines, conduits, containers, etc., or compensate for axial, lateral, and angular displacements of pipelines, conduits, containers, etc. The JDZ type axial inward pressure corrugated compensator uses its main elastic element, the expansion and displacement of the corrugated pipe, to compensate for the displacement of the pipeline route. It has a large compensation amount and good elasticity. The product is suitable for transporting media such as seawater, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, finished oil, air, gas, etc.

1. Compensate for axial, transverse, and angular thermal deformation of the absorption pipeline.

2. The expansion and contraction of the corrugated compensator facilitates the installation and disassembly of valve pipelines.

3. Absorb equipment vibration and reduce the impact of equipment vibration on pipelines.

4. Absorb the deformation of pipelines caused by earthquakes and subsidence.


Product Features

Calculation of Support Force for JDZ Internal Pressure Ripple Compensator:

Internal pressure thrust: F=100 · P · A Axial elasticity: Fx=Kx · (f · X)

Lateral elasticity: Fy=Ky · Y Bending moment: My=Fy · L

Bending moment: M θ=K θ ·θ Composite bending moment: M=My+M θ

In the formula: Kx: axial stiffness N/mm X: actual axial displacement mm

Ky: Lateral stiffness N/mm Y: Actual lateral displacement mm

K θ: angular stiffness N · m/degree θ: actual displacement measurement in the angular direction

P: Working pressure MPa A: effective area of corrugated pipe cm2 (check sample)

L: Distance m from the midpoint of the compensator to the support

Application example of JDZ type axial inward pressure corrugated compensator:

A certain carbon steel pipeline with a nominal diameter of 500mm, a working pressure of 0.6MPa, a medium temperature of 300 ° C, and an ambient minimum temperature of -10 ° C. The installation temperature of the compensator is 20 ° C. According to the pipeline layout (as shown in the figure), an internal pressure corrugated compensator needs to be installed to compensate for axial displacement X=32mm, lateral displacement Y=2.8mm, and angular displacement θ=1.8 degrees. Given L=4m, the number of fatigue failures of the compensator is considered to be 15000 times, and the force on support A is calculated.


classic case


Product schematic diagram

轴向内压式波纹补偿器

Component materials

number name quantity
1 corrugated tube 1
2 pipe nipple 2
3 draft tube 1
4 bolt n
5 nut 4n

Technical Parameter

Diameter DN Number of waves Pressure grade Mpa Effective area of bellows c ㎡ Max size of external diameter mm Length Length
0.25 0.6 1.0 1.6 2.5 Flange JDZ/F (mm) Take over the connection tube JDZ/F (mm)
Axial compensation mm, f911 degrees N/ram
32 8 25/21 22/26 20/26 18/63 15/98 16 110 160/250 264/210
16 50/11 46/14 41/14 36/32 31/47 220 224/291 316/320
40 8 25/28 22/44 20/44 18/89 15/106 23 130 164/259 269/260
16 50/14 46/22 41/22 36/45 31/55 240 230/304 319/400
50 8 25/30 22/51 20/70 18/70 15/138 37 150 172/276 282/230
16 50/16 46/26 41/35 36/35 31/70 260 240/342 347/450
65 8 33/28 30/35 26/44 22/55 19/68 55 170 315/294 300/260
12 42/16 38/22 38/32 34/40 29/50 280 260/334 340/470
80 8 40/20 36/26 34/33 28/41 24/54 81 200 240/338 344/260
10 53/14 49/17 49/21 43/26 38/33 230 270/368 374/300
100 8 45/47 45/60 40/75 35/93 29/117 121 220 235/317 323/280
10 76/26 74/32 64/40 57/50 49/63 260 305/381 387/320
125 6 48/38 42/47 38/59 34/74 29/92 180 250 282/314 316/320
8 85/23 77/29 66/36 58/45 50/56 290 382/386 388/360
150 6 49/42 44/50 40/62 34/78 29/97 257 250 282/339 338/320
8 79/34 71/43 64/51 54/59 46/65 290 356/399 402/360
200 6 52/49 46/55 42/68 38/78 34/111 479 300 280/348 348/370
8 73/31 65/44 59/52 53/58 48/78 340 340/402 402/420
250 6 72/30 63/34 59/42 52/45 47/55 769 300 315/379 415/420
8 108/16 97/21 87/35 79/39 71/47 360 393/459 493/460
300 6 72/51 65/55 59/59 52/65 47/71 1105 340 366/427 466/488
8 108/32 97/35 87/37 79/41 71/45 400 464/525 564/520
350 6 72/58 65/62 59/67 52/74 47/81 1307 340 397/452 497/480
8 10/38 7/41 87/44 79/48 71/47 420 509/564 609/540
400 6 72/54 65/58 59/62 52/68 47/75 1611 340 412/478 512/480
8 108/36 97/39 87/43 79/47 71/52 420 522/588 622/560
450 6 108/32 97/35 87/37 79/41 71/45 1972 340 403/498 503/500
8 162/20 145/22 131/23 118/25 106/28 450 503/658 603/590
500 6 108/59 97/64 87/68 79/75 71/82 2445 340 431/523 531/500
8 162/34 145/37 131/39 118/43 106/48 450 531/665 631/600
600 6 108/74 97/80 87/85 79/94 71/103 3534 380 478/548 578/540
8 162/42 145/45 131/49 118/53 106/60 658/679 758/640
700 4 108/67 97/72 87/77 79/85 71/95 4717 1110 490 550
6 162/42 145/45 131/49 118/53 106/60 690 670
800 4 120/88 108/95 102/102 94/112 82/123 5822 1265 502 560
6 183/67 164/72 156/77 144/85 125/93 610 600
900 4 120/84 108/90 102/97 94/107 82/117 7620 1186 620
6 183/60 164/65 156/69 144/76 125/84 720
1000 4 120/91 108/98 102/105 94/166 9043 1286 690
6 183/59 164/65 156/71 144/81 790
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