Stainless Steel Bladder Accumulator

A stainless steel bladder accumulator is an energy storage device used in hydraulic systems. It utilizes the compressibility of a gas (usually nitrogen) to store and release energy, primarily for stabilizing hydraulic system pressure, absorbing shocks, and providing energy compensation.

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Core Structure
The basic structure of a stainless steel bladder accumulator consists of three parts:
1. Shell: Typically made of seamless 304 or 316 stainless steel tubing, it has excellent high-temperature resistance and corrosion resistance (e.g., resistance to acids, alkalis, and salt spray), making it particularly suitable for high-temperature and corrosive environments.
2. Bladder: Located inside the shell, it is made of oil-resistant rubber or fluororubber. The bladder is filled with nitrogen (or other inert gas), and the outside is filled with hydraulic oil.
3. Anti-Extrusion Device: Located between the bladder and the shell contact surface, it prevents the bladder from being squeezed out by high-pressure oil. Common forms include oil valves or protective grids.

Working Principle
Stainless steel bladder accumulators achieve energy conversion through the interaction of liquid and gas:
1. Energy Storage Process (Charging): When the pressure in the hydraulic system exceeds the pressure of the pre-charged nitrogen gas in the bladder, hydraulic oil is forced into the accumulator, compressing the bladder and reducing its volume, thus increasing the pressure. Energy is stored in the bladder as compressed gas.
2. Energy Release Process: When the system pressure drops, the high-pressure nitrogen gas inside expands, pushing the hydraulic oil out of the accumulator to replenish the energy needed by the system, thereby maintaining system stability.

Main Features
1. Strong Corrosion Resistance: Due to the stainless steel outer shell, it has excellent high-temperature resistance and corrosion resistance, enabling long-term stable operation in harsh environments.
2. Lightweight: Compared to traditional steel accumulators, stainless steel bladder accumulators have higher specific strength, are lighter, have a compact structure, and are easy to install and maintain.
3. Wide Application Range: Widely used in hydraulic presses, injection molding machines, ship steering gears, construction machinery, and other equipment, mainly for buffering impact loads, compensating for pressure, and storing energy. Ordering Instructions: Please contact us if you have any special requirements.

Product
Description

We can design and develop according to the needs of our customers to meet the requirements of different clients.

Model Designations

1. Stainless Steel Bladder Accumulators

2. Construction
A: Small opening B: Big opening

3. Nominal Volume(L)

4. Nominal Pressure(MPa)

5. Hydraulic Port
L: Threaded F: Flanged

6. Medium
Y: Hydraulic oil
R: Emulsion
N: Second Group Medium

Product Specifications

Model Code and Size

Model Code	Nominal Pressure (MPa)	Nominal Volume (L)	M	d	Φ1	Φ2	Φ3	Φ4	n-Φ5	L1	H	Thread (L)	Flange (F)	Φ	Weight (kg)
BNXQ-A-0.4/-L(F)-	10	0.4	M27×2	/	22	30	85	115	4-Φ17	52	22	260	270	89	3/3
BNXQ-A-0.63/-L(F)-	10	0.63	M27×2	/	22	30	85	115	4-Φ17	52	22	315	325	89	3.5/3.5
BNXQ-A-1/-L(F)-	10	1	M27×2	/	22	30	85	115	4-Φ17	52	22	430	440	89	4.5/4.5
BNXQ-A-1/-L(F)-	10	1	M27×2	/	22	30	85	115	4-Φ17	52	22	330	340	114	5/5.5
BNXQ-A-1.6/-L(F)-	10	1.6	M27×2	/	22	30	85	115	4-Φ17	52	22	365	380	114	11/12.5
BNXQ-A-2.5/-L(F)-	10	2.5	M42×2	50	42	50	97	130	6-Φ17	66	28	430	445	152	14/15
BNXQ-A-4/-L(F)-	10	4	M42×2	50	42	50	97	130	6-Φ17	66	28	540	555	152	16/18.5
BNXQ-A-6.3/-L(F)-	10	6.3	M42×2	50	42	50	97	130	6-Φ17	66	28	710	725	152	22/25.5
BNXQ--10/-L(F)-*	10	10	M60×2	70	55	65	125	160	6-Φ21	90	32	650	665	219	39/48
BNXQ--16/-L(F)-*	10	16	M60×2	70	55	65	125	160	6-Φ21	90	32	860	875	219	54/63
BNXQ--20/-L(F)-*	10	20	M60×2	70	55	65	125	160	6-Φ21	90	32	985	1000	219	62/72
BNXQ--25/-L(F)-*	10	25	M60×2	70	55	65	125	160	6-Φ21	90	32	1160	1175	219	74/84
BNXQ--32/-L(F)-*	10	32	M60×2	70	55	65	125	160	6-Φ21	90	32	1400	1415	219	90/101
BNXQ--40/-L(F)-*	10	40	M60×2	70	55	65	125	160	6-Φ21	90	32	1680	1695	219	108/119
BNXQ--20/-L(F)-*	20	20	M60×2	70	55	65	125	160	6-Φ21	90	32	680	695	219	80/91
BNXQ--25/-L(F)-*	20	25	M60×2	70	55	65	125	160	6-Φ21	90	32	770	785	219	90/102.5
BNXQ--40/-L(F)-*	20	40	M72×2	80	70	80	150	200	6-Φ26	106	40	1050	1065	299	118/136
BNXQ--50/-L(F)-*	20	50	M72×2	80	70	80	150	200	6-Φ26	106	40	1230	1245	299	138/159.5
BNXQ--63/-L(F)-*	20	63	M72×2	80	70	80	150	200	6-Φ26	106	40	1470	1485	299	171/197
BNXQ--80/-L(F)-*	20	80	M72×2	80	70	80	150	200	6-Φ26	106	40	1810	1825	299	213/246
BNXQ--100/-L(F)-*	20	100	M72×2	80	70	80	150	200	6-Φ26	106	40	2190	2205	299	253/293
BNXQ--150/-L(F)-*	20	150	M72×2	80	70	80	150	200	6-Φ26	106	40	3125	3140	299	335/393
BNXQ--63/-L(F)-*	20	63	M85×2	95	83	95	170	230	6-Φ26	110	40	1170	1185	351	170/185.5
BNXQ--80/-L(F)-*	20	80	M85×2	95	83	95	170	230	6-Φ26	110	40	1395	1410	351	206/225
BNXQ--100/-L(F)-*	20	100	M85×2	95	83	95	170	230	6-Φ26	110	40	1660	1675	351	250/273
BNXQ--125/-L(F)-*	20	125	M85×2	95	83	95	170	230	6-Φ26	110	40	1990	2005	351	304/332
BNXQ--150/-L(F)-*	20	150	M85×2	95	83	95	170	230	6-Φ26	110	40	2310	2325	351	356/389
BNXQ--160/-L(F)-*	20	160	M85×2	95	83	95	170	230	6-Φ26	110	40	2450	2465	351	379/414
BNXQ--180/-L(F)-*	20	180	M85×2	95	83	95	170	230	6-Φ26	110	40	2700	2715	351	420/459
BNXQ--200/-L(F)-*	20	200	M85×2	95	83	95	170	230	6-Φ26	110	40	2980	2995	351	466/509