Axial bellows compensator. Axial bellows expansion joints DURO DAKOVIC

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bellows expansion joint- compensator A device consisting of a bellows (bellows) and fittings, capable of absorbing or balancing relative movements of a certain magnitude and frequency that occur in hermetically connected structures, and conduct under these conditions... ...

bellows expansion joint- 3.5 bellows compensator: A device consisting of a bellows and fittings, capable of absorbing or balancing relative movements of a certain magnitude and frequency occurring in hermetically connected structures, and conducting in these... ... Dictionary-reference book of terms of normative and technical documentation

axial bellows expansion joint- Bellows compensator that performs its functions under conditions of axial impact of the structures being connected. [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN axial bellows expansion joint DE Axialbalgkompensator… … Technical Translator's Guide

rotary bellows compensator- Bellows compensator that performs its functions under conditions of angular impact of the structures being connected. γ = γ1 + γ2 [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN angular bellows... ... Technical Translator's Guide

balanced universal bellows compensator- Universal bellows expansion joint that does not load the connected structures with expansion force. [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN pressure balanced expansion joint DE Universalbalgkompensator,… … Technical Translator's Guide

shear bellows expansion joint- A bellows compensator that performs its functions under conditions of shear of the connected structures perpendicular to the axis of the compensator. [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN lateral bellows expansion joint… … Technical Translator's Guide

universal bellows expansion joint- Bellows compensator, which performs its functions under a combination of shear, axial and angular effects of the connected structures. [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN universal bellows expansion joint ... Technical Translator's Guide

rotary-axial bellows compensator- [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN angular axial bellows expansion joint DE Axial Angularbalgkompensator FR compensateur ondulé angulaire/axial … Technical Translator's Guide

shear-rotary bellows compensator- [GOST 25756 83] Topics bellows General terms types of bellows expansion joints EN lateral angular bellows expansion joint DE Lateral Angularbalgkompensator FR compensateur ondulé latéral/angulaire … Technical Translator's Guide

Angular shift compensation ... Wikipedia

The sections of the pipeline before and after the compensator must be mounted and secured in fixed supports OH-1 and OH-2 so that the distance between the ends of the pipes at the location where the compensator is installed corresponds to the length of the compensator in the delivery state L;
- next, you should bring the compensator to the joints, ensuring the alignment of the connecting pipes of the compensator and the ends of the pipeline;
- weld the joints.

Compensators can be installed on both horizontal and vertical sections of pipelines. The insertion of the compensator into the heat pipelines should be done in the places specified in the design technical documentation. It is not allowed to load the bellows axial compensator KSO with the weight of the connected sections of pipes, machines and mechanisms. Installation of compensators is allowed at air temperatures not lower than minus 10°C. Installation and welding work at outside temperatures below minus 10°C must be carried out in special rooms in which the air temperature in the welding zone must be maintained not lower than the specified one. Compensators should be transported to the installation site in the original packaging, excluding the possibility of mechanical damage. It is prohibited to store unpacked and unpreserved expansion joints in open areas. Before installation, compensators must be checked for compliance with their technical characteristics with the design of the heating network, as well as for the absence of nicks and other damage to the casing and connecting pipes. When installing compensators, torsional and bending loads relative to the longitudinal axis of the product should be avoided. When performing

welding work protection measures must be taken on the protection of pipelines of heating networks from external corrosion RD 153-34.0-20.518-2003. If a leak in the compensator is detected during testing, it is dismantled and replaced with a new one, about which a report is drawn up. If after hydraulic tests it is determined that the length of the compensator has increased by more than 15 % compared to the length during installation, which indicates a displacement of the fixed supports, it is necessary to inspect the supporting structures, and replace the compensator with a new one.

After applying an anti-corrosion coating to the welded seams of the pipes, thermal insulation is applied to the compensator. In this case, it is necessary to exclude the possibility of contact with soil or surface waters under the protective casing. Thermal insulation should not prevent the free movement of the movable part of the compensator relative to the outer protective casing.Filling the space between the bellows corrugations with insulating or other materials is not allowed. Work on waterproofing joints must be carried out in accordance with recommendations and instructions factories that produce heat pipes, depending on the design of the heat-insulating coating and the type of installation (duct, above-ground, in tunnels, indoors).

The installation of the alarm system is carried out according to a special project, in full accordance with the manufacturer’s instructions. At least two indicator conductors should be installed in the thermal insulation of axial bellows expansion joints. The ends of which must protrude on both sides by at least 100 mm for ease of connection with the general signal pipeline system. The connection of the indicator conductors of axial compensators with the general signaling system must be made after completion of welding work, before starting work on insulating the joints of the nozzles with the heat pipeline.

The conductor should not touch the metal surface anywhere. After documenting the connection of the indicator conductors of the general signal system and checking that their resistance corresponds to the factory data, the joints should be insulated. Pipelines with compensators installed in them must be subject to preliminary and final testing for strength and tightness. When testing a pipeline on which a KSO compensator is installed, it is necessary to observe building codes and the rules of the Russian Federation SNiP 41-02-2003, “Rules for the design and safety of operation of steam and"(PB 10-573-03), "Safety rules for the operation of thermal mechanical equipment of power plants and heating networks" (RD 34.03.201-97). Before completing installation, as well as during work, you should make sure that the inner surface of the pipes and compensator is dry, clean and free from foreign bodies. After installation is completed, the system should be flushed with water in accordance with the requirements of SNiP 3.05.03-85 " Heating network».

Hydraulic (pneumatic) tests for strength and density steel pipes and compensator KSO are manufactured in accordance with SNiP 41-02-2003 “Heat networks”. Preliminary tests are usually performed hydraulically. For hydraulic testing, water with a temperature not higher than +40C and not lower than +5C is used. In this case, the outside air temperature must be positive, each tested area is hermetically sealed on both sides with plugs. The use of shut-off valves for these purposes is not allowed.

Final tests are carried out after completion of all construction and installation work.

If the heating pipelines are not immediately put into operation, then the system as a whole is recommended to be mothballed.

A rupture of the compensator bellows may occur as a result of incorrect calculations in the design documentation or violations of operating and installation rules. In the event of failure of the compensator to operate during the warranty period, the consumer must draw up a technically justified report on the malfunction and the routine maintenance performed.
TU VRSHE.302667.006TU;
Certificate and declaration TR CU 32/2013;
Certificate GOST R
License for the manufacture of equipment for structures, complexes, installations with nuclear materials intended for the production, processing, transportation of nuclear fuel and nuclear materials
License for designing equipment for nuclear installations.
PED (audit by TÜV Rheinland, Germany)

ISO9001:2008 (audit by TÜV Rheinland, Germany).

Materials for manufacturing Bellows

: stainless steel, corrosion-resistant, heat-resistant, 08Х18Н10Т (AISI321), 08Х18Н10 (AISI304), 03Х18Н11 (AISI304L), 03Х17Н14M3 (AISI316L). Structural cryogenic steel, 12Х18Н10Т (AISI321).: high-quality structural carbon steel, grades 20, 35. Stainless steel, corrosion-resistant, heat-resistant, 08Х18Н10Т (AISI321), 08Х18Н10 (AISI304), 03Х18Н11 (AISI304L), 03Х17Н14M3 (AISI316L). Structural cryogenic steel, 12Х18Н10Т (AISI321) or their analogues. Low alloy structural steel for welded structures, 09G2S, 17GS.

Other items: High-quality structural carbon steel, grades 20, 35. Stainless steel, corrosion-resistant, heat-resistant, 08Х18Н10Т (AISI321), 08Х18Н10 (AISI304), 03Х18Н11 (AISI304L), 03Х17Н14M3 (AISI316L). Structural cryogenic steel, 12Х18Н10Т (321 or their analogues. Low-alloy structural steel for welded structures, 09G2S, 17GS.

Connection type of bellows axial compensator, welded connections
Marking of bellows axial compensator	Nominal diameter DN	Operating pressure PN	Structural design
CSR ARM P single-section Threaded connection	from 15 before 5000 mm	from vacuum to 150 kg/cm2
2KSO ARM P two-section	from 15 before 5000 mm	from vacuum to 150 kg/cm2
Connection type of bellows axial expansion joint, fixed or rotating (loose) flanges
CSR ARM F with swivel or weld flanges Design options: with internal screen, protective casing, travel limiter	from 20 before 5000 mm	from vacuum to 150 kg/cm2
2KSO ARM F two-section, with rotary or welded flanges Design options: with internal screen, protective casing, travel limiter	from 20 before 5000 mm	from vacuum to 150 kg/cm2

TECHNICAL CHARACTERISTICS AND MATERIALS OF BELLOWS AXIAL COMPENATOR

In the manufacture of the bellows axial compensator, a bellows made of multilayer stainless steel is used. The bellows material is selected depending on the operating parameters: when high temperatures working environment, the bellows is made of heat-resistant steels, for low temperatures the bellows are made of cryogenic stainless steels, for aggressive working environments, corrosion-resistant steels are used. Axial bellows expansion joints are produced in one or two sections. Two-section (two bellows), has increased compensating capacity (axial stroke) compared to one-section.

To protect against external influences, the axial bellows compensator is equipped with a protective casing; when working in aggressive environments with solid inclusions, a protective screen is installed. If necessary, use an axial travel limiter.

Specifications bellows axial expansion joints	Material execution
Standard version	Bellows and inner screen material
Conditional pass DN: from 25 before 300 mm	Standard version
Working pressure PN: 6 , 10 , 16, 25 kg/cm2 (bar)	Material GOST: 08Х18Н10Т
Operating temperature T: from - 60 before 425 gr. WITH	Material DIN: 1.4541
*Special version*	Material AISI: AISI 321
Nominal diameter DN: from 15 before 5000 mm	Special version
Working pressure PN: from vacuum to 150 kg/cm2 (bar)	Material GOST: 08Х18Н10, 08Х16Н11М3, 08Х17Н13М2Т, 20Х20Н14С2
Operating temperature T: from - 260 before 900 gr. WITH
Axial stroke
Standard version: 30 , 60 mm	Material AISI: 304, 309, 316, 316 ti
Special version: from 1 before 500 mm	Material: pipes, flanges, protective casing, restrictive fittings
Working environment	*Standard version*
Water, steam, gas, petroleum products, oils, chemical and cryogenic media	Material GOST: Art. 20, St3sp
Number of working cycles	Material DIN: 1.0038
*Standard version*	Material AISI: St 37-2
from 50 before 1 000	*Special version*
*Special version*	Material GOST: 09G2S, 08Х18Н10, 08Х16Н11М3, 08Х17Н13М2Т, 20Х20Н14С2
before 10 000 cycles, full stroke
Scope of application of axial expansion joints	Material DIN: 1.4301, 1.4828, 1.4401, 1.4571
Axial displacement compensation Removing vibration loads, misalignment Various: pipelines, flues	Material AISI: 304, 309, 316, 316 ti, 321
	Motors, compressors, pumps and other industrial equipment

AXIAL BELLOWS COMPENSATORS FOR WELDING, STANDARD VERSION

Conditional diameter DN	Workingpressure	Axialmove ∆ l	Axial compensator dimensions			Axialrigidity C	Efficientsquare S
Conditional diameter DN	Workingpressure	Axialmove ∆ l	D1	D x s	L	Axialrigidity C	Efficientsquare S
mm	kg/cm2	mm	mm	mm	mm	N/mm	cm2	kg
25	10, 16	30	48,5	34 x 3	210	40	12	0,4
32	10, 16	30	55	42 x 3.5	215	43	14	0,5
40	10, 16	30	61	48 x 3	220	65	24	0,6
50	10, 16	30	76	57 x 4	210	86	37	0,7
50	10, 16	60	76	57 x 4	295	45	37	0,9
65	10, 16	30	95	76 x 4	210	100		0,9
65	10, 16	60	95	76 x 4	295	55		1,1
80	10, 16	30	111	89 x 5	210	115	83	1,2
80	10, 16	60	111	89 x 5	295	60	83	1,4
100	10,16	30	140	108 x 4	220	140	133	1,5
100	10,16	60	140	108 x 4	300	74	133	1,9
125	10, 16	30	164	133 x 4	230	280	192	2,4
125	10, 16	60	164	133 x 4	310	80	192	3,0
150	10, 16	30	200	159 x 5	245	380	264	3,4
150	10, 16	60	200	159 x 5	345	120	264	4,3
200	10, 16	30	250	219 x 6	240	450	440	5,1
200	10, 16	60	250	219 x 6	345	180	440	6,4
250	10, 16	30	323	273 x 7	250	900	680	8,9
250	10, 16	60	323	273 x 7	350	420	680	11,1
300	10, 16	30	380	325 x 7	260	1200	910	12,0
300	10, 16	60	380	325 x 7	360	520	910	15,0

AXIAL FLANGE BELLOWS COMPENSATORS, STANDARD VERSION

Conditional diameter DN	Workingpressure	Axialmove ∆ l	Dimensions of bellows axial expansion joint						Axialrigidity C	Effectivesquare S
Conditional diameter DN	Workingpressure	Axialmove ∆ l	D	db	D1	b	d x n	L	Axialrigidity C	Effectivesquare S
mm	kg/cm2	mm	mm	mm	mm	mm	mm/piece	mm	N/mm	cm2	kg
25	10, 16	30	115	33	85	16	14 x 4	110	40	12	1,4
32	10, 16	30	135	39	100	16	18 x 4	115	43	14	2,5
40	10, 16	30	145	46	110	17	18 x 4	120	65	24	3,5
50	10, 16	30	160	59	125	19	18 x 4	110	86	37	4,8
50	10, 16	60	160	59	125	19	18 x 4	195	45	37	6,0
65	10, 16	30	180	78	145	21	18 x 4	110	100		5,8
65	10, 16	60	180	78	145	21	18 x 4	195	55		6,3
80	10, 16	30	195	91	160	21	18 x 8	110	115	83	7,8
80	10, 16	60	195	91	160	21	18 x 8	190	60	83	8,7
100	10,16	30	215	116	180	23	18 x 8	115	140	133	8,1
100	10,16	60	215	116	180	23	18 x 8	200	74	133	9,2
125	10, 16	30	245	142	210	25	18 x 8	130	280	192	10,9
125	10, 16	60	245	142	210	25	18 x 8	210	80	192	12.2
150	10, 16	30	280	170	240	25	22 x 8	145	380	264	13,5
150	10, 16	60	280	170	240	25	22 x 8	245	120	264	16,0
200	10, 16	30	335	222	295	27	22 x 12	140	450	440	18,2
200	10, 16	60	335	222	295	27	22 x 12	245	180	440	22,2
250	10, 16	30	405	273	355	28	26 x 12	150	900	680	24,9
250	10, 16	60	405	273	355	28	26 x 12	250	420	680	29,8
300	10, 16	30	460	325	410	28	26 x 12	160	1200	910	31,2
300	10, 16	60	460	325	410	28	26 x 12	260	520	910	33,0

APPLICATION AREA OF BELLOWS AXIAL COMPENSATORS

Axial bellows compensators are used in various fields of industry, used in the installation and operation of pipelines for various purposes. Connection to pipelines, pumps, engines, tanks and other equipment is carried out using flanges, welded pipes, threaded connections. The fixing fittings comply with standards and are made from various grades of carbon and stainless steels. The axial flange bellows compensator is supplied with both rotary and welded flanges.

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