46results about How to "Small air volume" patented technology

The invention relates to a sound dampening device (1) comprising a frame (2), a rear layer (4) and a front layer (6) arranged on opposite sides of the frame (2), such that the frame (2), the rear layer (4) and the front layer (6) forms an enclosed space, wherein a first sound absorbing layer (8) is arranged between the rear layer (4) and the front layer (6). A cavity (10) is formed between the rear layer (4) and the first sound absorbing layer (8) and an air purifying device (12) is arranged in fluid communication with said cavity (10), such that purified air from the air purifying device (12) is supplied to the cavity (10) via an inlet (14) and is discharged through at least one opening (16) in the first sound absorbing layer (8) and at least one output zone (18) in the front layer (6).

The invention relates to a sound dampening device (1) comprising a frame (2), a rear layer (4) and a front layer (6) arranged on opposite sides of the frame (2), such that the frame (2), the rear layer (4) and the front layer (6) forms an enclosed space, wherein a first sound absorbing layer (8) is arranged between the rear layer (4) and the front layer (6). A cavity (10) is formed between the rear layer (4) and the first sound absorbing layer (8) and an air purifying device (12) is arranged in fluid communication with said cavity (10), such that purified air from the air purifying device (12) is supplied to the cavity (10) via an inlet (14) and is discharged through at least one opening (16) in the first sound absorbing layer (8) and at least one output zone (18) in the front layer (6).

A housing for receiving an electronic circuit (4) having a plurality of components (5) having a carrier plate (7) and a housing cover (8) including a circumferentially enclosing wall (9) on the carrier plate (7) and a cover part (10) on the wall (9), which cover part (10) lies opposite the carrier plate (7). A volume compensation element (11) is attached on the carrier plate (7) in an interior (12) of the housing cover (8) which is enclosed in a pressure-tight manner from an external atmosphere. The volume compensation element (11) is elastically formed providing a variable volume for compensation of pressure fluctuations in the interior (12), which variable volume occurs with a change in position of the volume compensation element (11) relative to the carrier plate (7). A gap between the volume compensation element (11) and the carrier plate (7) is connected to the external atmosphere.

A method for correcting torque including: presetting rotational speed of each gear by corresponding gear input lines of a microprocessor; providing a mechanism to select one rotational speed set; electing N power points within a range of the rated power, acquiring a set of torque data corresponding to each set of the rotational speed at each power point, and storing a total 2×N sets of torque data; allowing the motor to enter the torque correction mode; recording a steady torque Tadj when the motor operates in a steady state; and comparing the steady torque Tadj with a maximum gear torque Tmax, and selecting the set of torque data to which T[M]max belongs when the steady torque Tadj satisfies the relationship: 110%×T[M−1]max<Tadj≦110%×T[M]max, M=1, 2, . . . , N; when M=1, T0max=0.

The invention discloses a combustion-supporting method of a rotary cement kiln burner oxygen enrichment device. The rotary cement kiln burner oxygen enrichment device consists of a kiln head outer layer pipeline, a kiln head outer layer air inlet pipe orifice, a kiln head coal layer current pipeline, a kiln head pulverized coal wind current pipeline, a kiln head coal wind pipeline, a kiln head inner wind pipeline, a kiln head inner wind air inlet pipe orifice, a kiln head oil pipeline, an oil nozzle, kiln head refractory concrete and a kiln head oxygen enrichment air flue, wherein the oxygen enrichment air flue is arranged between the kiln head outer layer air inlet pipe orifice and the kiln head inner wind air inlet pipe orifice; an air inlet of oxygen enrichment is preserved in the pipe end of the kiln head oxygen enrichment air flue in the kiln head outer layer air inlet pipe orifice; when the oxygen enrichment in the kiln head outer layer pipeline and the oxygen enrichment in the kiln head inner wind pipeline enter a rotary cement kiln together with pulverized coal wind current simultaneously, the temperature of a combustion field of the rotary cement kiln input with the oxygen enrichment can reach over 1700 DEG C, before free carbon in the combustion field with the temperature of over 1700 DEG C forms black smoke, the free carbon is thoroughly burned, and the free carbon becomes combustive fuel; meanwhile, the clinker catalyst of cement is subjected to oxidation combustion by the input of the oxygen enrichment; when the temperature of the combustion field is over 1700 DEG C, CO in the combustion field is burned, and the emission of NOx is reduced by 35%.

The invention discloses a high concentration SO 2 The conversion acid production process belongs to the technical field of sulfur recovery, and comprises the following steps: (1) mixed with O 2 The purified wet flue gas enters the drying tower for dehydration, and then enters the preheat exchanger to raise the temperature to a predetermined temperature; (2) the purified flue gas after heating enters the catalyst layer of the pre-reformer to react, and the flue gas passes through the catalyst layers of the pre-reformer, SO 2 Concentrations were all decreased by 7%, for any SO at the pre-reforming inlet 2 concentration of flue gas, the flue gas temperature in the outlet layer is controlled to be lower than 620°C; (3) the flue gas from the pre-reformer cools down to the set temperature, and then enters the pre-absorption tower for the first absorption to make acid, after absorbing SO 3 And with the flue gas after the wind, enter the traditional SO 2 Conversion acid system; the invention has a simple process and does not have high requirements for the working conditions of fans, converters and other equipment, and is an easy-to-implement high-concentration SO 2 conversion process.