Bellows for Transformer - Bellows - Henan Lanphan Technology Co. Ltd.

Product Description

Bellows for transformer mainly used in the oil conservator of transformer. The external corrugated oil conservator use advanced super flexible stainless steel corrugated compensator as the compensating component and sealing and isolation component, in completely air and moisture isolated condition, to compensate the volume of transformer’s insulating oil. Bellows for transformer just like a gasbag whose inner part connecting to the air, place it in insulating oil, the oil storage box connect with transformer oil box through bottom connector. The volume change of insulating oil would make bellows flex, so that to change the volume of oil box and compensate volume change of insulating oil. Bellows for transformer mainly used to compensate axial displacement and a few lateral displacement, also reduce shock and noise, has advantages of easy installation, simple design and low cost. Bellows for transformer has been widely used in electric power, petroleum and chemical engineering industries.

Product features of bellows for transformer:

Strong external pressure resistant ability.
Low cost.
Easy to install.
Low temperature resistance, shock resistant.
Good chemical stability.
Long service life.
Super strong compensation performance.

Specifications

DN (mm)	bellows		compensation dosage			stiffness			max size of radial direction shape Bmm	total length L (mm)		product type
	active area A cm²	corrugation number n	axial direction X₀ mm	lateral direction Yo (mm)	angular direction θ± (°)	axial direction N/mm	lateral direction N/mm	angular direction Nm/ (°)		connection type
	active area A cm²	corrugation number n	axial direction X₀ mm	lateral direction Yo (mm)	angular direction θ± (°)	axial direction N/mm	lateral direction N/mm	angular direction Nm/ (°)		adapter pipe J	flange F
corrugated compensator:design pressure Pd = 1.0Mpa(10Kgf/ cm²)fatigue life【 N 】=1000times design temperature t = 20℃
40	38	4	5.5	1.2	4	282	1214	14	145	230	240	TB
40	38	8	1.1	5	8	141	135	6.5	145	300	310
50	56	4	7.5	1.5	4	388	1790	20	157	250	260
50	56	8	15	6.5	8	194	189	7	157	340	350
65	79	4	9	1.5	4	422	2109	24	186	250	260
65	79	8	18	6.5	8	211	217	9	186	360	370
80	138	4	11	2	3	658	2715	28	219	354	270
80	138	8	22	8	6	329	320	13	219	364	380
100	155	4	12	2.3	3	698	3226	30	283	284	300
100	155	8	24	9.1	6	349	403	15	283	364	380
150	300	4	11	1.5	3	1009	9029	84	289	284	300
150	300	8	22	6.1	6	504	1129	42	289	364	380
200	535	4	17	2.6	3	1493	10592	222	389	380	400
200	535	8	34	10	6	746	1324	111	389	500	520
250	779	4	16	2.1	3	1850	19116	400	443	3H0	400
250	779	8	33	8.3	6	925	2390	200	443	500	520
300	1075	4	21	2.8	3	1536	15211	459	495	426	450
300	1075	8	42	11	6	768	1901	229	495	570	594
350	1269	4	21	5.9	3	1682	19653	593	577	426	450
350	1269	8	42	12	6	841	2457	296	577	570	594
400	1619	4	20	22	2.6	1917	28582	862	626	426	450
	1619	8	41	8.6	5	958	3573	431	626	570	594
450	2003	4	20	1.9	2.3	2148	39632	1195	678	426	450
450	2003	8	40	7.7	4.6	1074	4954	598	678	570	594
500	2428	4	20	1.7	2	2380	53229	1605	729	426	450
500	2428	8	40	6.9	4	1190	6654	803	729	570	594
600	3473	4	36	4.3	3	1561	17977	1506	830	576	600
600	3473	8	71	17	6	781	2247	753	830	816	840

Application

Bellows for transformer has been widely used in electric power, petroleum and chemical engineering industries.

Our Service

Pre-Sales Service

According to product’s using condition, technicians will offer rationalization;
Provide detailed product performance specification;
Provide professional quoted price;
Provide 24-hour technical consulting reply.

In-Sales Service

Begin to supervise from raw material, its qualified rate can reach to 100%;
Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach to 100%;
Provide product’s inspection record of key junctures to customers;
Provide production schedule photos to customers at regular intervals;
Package and transport products strictly accordance with export standard.

After-Sales Service

Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product’s standard component and sealing component;
During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product’s running state in time. Assist customers to install and adjust products until customers are satisfied;
If product has malfunction during operation period, we’ll offer you satisfied answer in time. We’ll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification.
Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information.

FAQ

What’s the pressure of bellows for transformer?
The pressure resistance ability is ±0.1MPa, completely satisfied vacuum oiling requirements.
What’s the service life of your product?
The designed service life is 30 years, the external oil structure has no condensation generation.
Can you provide pressure test report?
Yes, we can provide pressure test report.
Can you provide raw material detection proof?
Yes, we can.
Can you do flaw detection?
Yes, we can.(you need to tell us in advance).
Can you provide installation manual?
Yes, we can.

Advantages

We have a complete set of hydraulic equipment to satisfy different size products’ detection requirements.
We have professional flaw detection team, real time monitoring product quality.
Supervise every production procedure and every detail.
Sufficient raw material storage, deliver products in time.
Cooperate with universities and colleges, guaranteed advancement of product technology.