Axial Pressure Expansion Joint

Axial internal pressure corrugated compensator is a kind of compensation device used to absorb dimensional changes in pipes, conduits or containers due to thermal expansion and contraction.

Overview

Structural Composition

The axial internal pressure type corrugated compensator is mainly composed of bellows, end pipe and guide cylinder and other components. The bellows is the core component, which absorbs displacement through elastic deformation. Compact structure, the use of different environments slightly different structure. Due to the limitation of stability, the effective length of the bellows is small and can only compensate for small transverse displacement, while the end pipe and flange are used to connect the bellows and piping system to ensure the sealing and stability of the whole system.

Working Mode

When the temperature or pressure within the piping system changes, the pipe will deform. At this time, the bellows in the axial internal pressure bellows compensator will play its role to absorb these deformations through its own expansion and contraction, so as to avoid stress concentration, rupture and other problems in the piping system due to deformation. This kind of compensation not only improves the safety of pipeline system, but also prolongs its service life.compact design, takes up little space.

Application Scenarios

Axial internal pressure type corrugated compensator is widely used in various piping systems, especially in occasions where frequent installation and removal of valves is required, as it provides convenient expansion and contraction. In addition, it reduces the impact of equipment vibration on piping and is widely used where frequent installation and removal of valves is required.

Advantages

Compact structure: compact design, takes up little space.

Wide application: applicable to a variety of piping systems, especially in the need for frequent installation and removal of valves.

Reduced vibration: can effectively reduce the impact of equipment vibration on pipin

Path DN	Wavenumber	Pressure rating MPa					Bellows Effective area cm²	Maximum outer diameter Size mm	Length
		0.25	0.6	1.0	1.6	2.5			Flange JDZ/F(mm)	Take over JDZ/J(mm)
		Axial compensation mm/ Stiffness N/mm							Flange JDZ/F(mm)	Take over JDZ/J(mm)
32	8	25/21	22/26	20/26	18/63	15/98	16	225	160/250	264/280
32	16	50/11	46/14	41/14	36/32	31/47	16	225	224/291	316/321
40	8	25/28	22/44	20/44	18/89	15/106	23	244	164/259	269/289
40	16	50/14	46/22	41/22	36/45	31/55	23	244	230/304	319/334
50	8	25/30	22/51	20/70	18/70	15/138	37	259	172/276	282/306
50	16	50/16	46/26	41/35	36/35	31/70	37	259	240/342	347/372
65	8	33/28	30135	26/44	22/55	19/68	55	270	215/294	300/322
65	12	42/16	38/22	38/32	34/40	29/50	55	270	260/334	340/362
80	8	40/20	36/26	34/33	28/41	24/54	81	284	240/338	344/366
80	10	53/14	49/17	49/21	43/26	38/33	81	284	270/368	374/390
100	6	45/47	45/60	40/75	35/93	29/117	855	304	235/317	323/345
100	10	76/26	74/32	64/40	57/50	49/63	855	304	305/381	3871409
125	5	48/38	42/47	38/59	34/74	29/92	180	334	282/314	316/342
125	9	85/23	77/29	66/36	58/45	50/56	180	334	382/386	388/414
150	5	49/42	44/50	40/62	34/78	29/97	257	354	382/339	338/367
150	8	79/34	71/43	64/51	54/59	46/65	257	354	356/399	402/427
200	4	52/49	46/55	42/68	38/78	34/111	479	442	280/348	348/372
200	6	73/31	65/44	59/52	53/58	48/78	479	442	340/402	402/426
250	4	72/30	65/34	59/42	52/45	47/55	769	507	315/379	415/379
250	6	108/16	97/21	87/35	79/39	71/47	769	507	393/459	493/399
300	4	72/51	65/55	59/59	52/65	47/71	1105	562	366/427	466/467
300	6	108/32	97/35	87/37	79/41	71/45	1105	562	464/525	564/565
350	4	72/58	65/62	59/67	52/74	47/81	1307	622	397/452	497/492
350	6	108/38	97/41	87/44	79/48	71/47	1307	622	509/564	609/604
400	4	72/54	65/58	59/62	52/68	47/75	1611	700	412/478	512/518
400	6	108/36	97/39	87/43	79/47	71/52	1611	700	522/588	622/628
450	4	108/32	97/35	87/37	79/41	71/45	1972	760	403/498	503/523
450	6	162/20	145/22	131/23	118/25	106/28	1972	760	503/658	603/648
500	4	108/59	97/64	87/68	79/75	71/82	2445	835	431/523	531/554
500	6	162/34	145/37	131/39	118/43	106/48	2445	835	531/665	531/742
600	4	108/74	97/80	87/85	79/94	71/103	3534	980	478/548	578/588
600	6	162/42	145/45	131/49	118/53	106/60	3534	980	658/679	758/781
700	4	108/67	97/72	87/77	79/85	71/95	4717	1110	490	590
700	6	162/42	145/45	131/49	118/53	106/60	4717	1110	690	790
800	4	120/88	108/95	102/102	94/112	82/123	5822	1265	502	602
800	6	183/67	164/72	156/77	144/85	125/93	5822	1265	610	710
900	4	120/84	108/90	102/97	94/107	82/117	7620	1186		698
900	6	183/60	164/65	156/69	144/76	125/84	7620	1186		850
1000	4	120/91	108/98	102/105	94/116		9043	1286		692
1000	6	183/59	164/65	156/71	144/81		9043	1286		855