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CN-121988122-A - Nitrogen making machine special for offshore platform

CN121988122ACN 121988122 ACN121988122 ACN 121988122ACN-121988122-A

Abstract

The application relates to the technical field of nitrogen making machines and provides a special nitrogen making machine for an offshore platform, which comprises a nitrogen making machine main body, wherein an oil remover, a dryer, a filter and a clean air buffer tank are sequentially arranged at the front end of the nitrogen making machine main body along the gas transmission direction, a centrifugal chamber, a condensing chamber and an adsorption chamber which are sequentially communicated are respectively arranged in the oil remover, the inlet end of the centrifugal chamber is used for being connected with the output end of an air compressor, the outlet end of the adsorption chamber is connected with the inlet end of the dryer, and an oil absorption filter element is arranged in the adsorption chamber. The nitrogen making machine special for the offshore platform can lighten the dehumidification burden of a dryer.

Inventors

  • LI QIAOPING
  • XIE JIAQIANG
  • JIANG JIA
  • LI YEQI
  • LI ZHENHUA
  • CHEN DA

Assignees

  • 浙江盛尔气体设备制造有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. The nitrogen generator special for the offshore platform is characterized by comprising a nitrogen generator main body (1), wherein an oil remover (2), a dryer (3), a filter (31) and a clean air buffer tank (32) are sequentially arranged at the front end of the nitrogen generator main body (1) along the gas transmission direction, a centrifugal chamber (21), a condensing chamber (22) and an adsorption chamber (23) which are sequentially communicated are respectively arranged in the oil remover (2), the inlet end of the centrifugal chamber (21) is used for being connected with the output end of an air compressor, the outlet end of the adsorption chamber (23) is connected with the inlet end of the dryer (3), and an oil absorption filter element (231) is arranged in the adsorption chamber (23).
  2. 2. The nitrogen generator special for offshore platforms, as claimed in claim 1, wherein the condensing chamber (22) is internally provided with a mounting box body (4), the mounting box body (4) is internally provided with a condensing runner (41), one end of the condensing runner (41) is communicated with the centrifugal chamber (21), the other end of the condensing runner is communicated with the adsorption chamber (23), and the condensing runner (41) is coiled in a serpentine shape.
  3. 3. The nitrogen generator special for offshore platforms, as set forth in claim 2, wherein the inner wall of the installation box body (4) is provided with a first isolation plate (42) and a second isolation plate (43) respectively, the first isolation plate (42) and the second isolation plate (43) are arranged in a staggered manner along the height direction, one side of the first isolation plate (42) and the inner wall of the installation box body (4) form a first opening (421), one side of the second isolation plate (43) and the inner wall of the installation box body (4) form a second opening (431), and the first opening (421) and the second opening (431) are arranged in a staggered manner to form the snakelike winding condensation flow channel (41).
  4. 4. A special nitrogen generator for offshore platforms according to claim 3 is characterized in that grooves (432) are formed in the surface, far away from the second openings (431), of the second isolation plates (43), the first openings (421) of the first isolation plates (42) are combined with the grooves (432) of two vertically adjacent second isolation plates (43) to form a speed reduction zone (44), condensation pipes (45) are arranged in the installation box body (4), and the condensation pipes (45) penetrate through the speed reduction zones (44).
  5. 5. The nitrogen generator special for offshore platforms, as claimed in claim 4, wherein the groove (432) is provided with an arc-shaped surface (433), one side of the first isolation plate (42) close to the first opening (421) is provided with an arc-shaped strip (422), and the intrados of the arc-shaped strip (422) is connected with the arc-shaped surface (433) of the groove (432).
  6. 6. The nitrogen generator special for offshore platforms, as claimed in claim 4, is characterized in that two condensing channels (41) are arranged in the installation box body (4), the installation box body (4) is provided with air inlets (46), the inlet ends of the two condensing channels (41) are communicated with the centrifugal chamber (21) through the air inlets (46), and a switching plate (47) for switching the opening and the closing of the two condensing channels (41) is hinged at the air inlet (46) of the installation box body (4).
  7. 7. The nitrogen generator special for offshore platforms according to claim 6, wherein the oil remover (2) is rotatably provided with a rotating shaft (5), a butt joint column (51) is arranged on the rotating shaft (5), the butt joint column (51) and the rotating shaft (5) are eccentrically arranged, a butt joint sliding groove (471) for embedding the butt joint column (51) is formed in the side wall of the switching plate (47), and when the rotating shaft (5) drives the butt joint column (51) to rotate, the butt joint column (51) forces the switching plate (47) to swing in a reciprocating mode through the butt joint sliding groove (471).
  8. 8. The nitrogen generator special for offshore platforms, as set forth in claim 6, wherein the second isolation plate (43) has an oil storage chamber (48), a first communication hole (481) and a second communication hole (482) are respectively formed in an inner wall of the oil storage chamber (48), the first communication hole (481) is communicated with a deceleration zone (44) above the oil storage chamber (48), and the second communication hole (482) is used for discharging oil outwards.
  9. 9. The nitrogen generator special for offshore platforms according to claim 8, wherein a sliding bar (6) is installed on the inner wall of the oil remover (2) in a sliding manner, a blocking head (61) is arranged on the side wall of the sliding bar (6), a return spring is arranged between the sliding bar (6) and the inner wall of the oil remover (2), the blocking head (61) of the sliding bar (6) is normally forced to block the second communication hole (482), a push rod (62) for pushing the switching plate (47) is connected to the side wall of the sliding bar (6), and when the switching plate (47) closes the condensation flow channel (41), the switching plate (47) pushes the sliding bar (6) to slide through the push rod (62) and forces the blocking head (61) of the sliding bar (6) to be separated from the second communication hole (482) corresponding to the closed condensation flow channel (41).
  10. 10. The nitrogen generator special for the offshore platform, as claimed in claim 1, is characterized in that a separation plate (211) is arranged in the centrifugal chamber (21), the separation plate (211) separates the centrifugal chamber (21) to form a centrifugal area (212) communicated with the air compressor and a communication area (213) communicated with the condensing chamber (22), a cutting opening (214) is formed in the surface of the separation plate (211), the centrifugal area (212) is communicated with the communication area (213) through the cutting opening (214), a rotating shaft (7) is rotatably arranged in the communication area (213), a plurality of windward frames (71) are arranged on the outer wall of the rotating shaft (7), and an oil absorbing layer (72) is arranged on the windward frames (71).

Description

Nitrogen making machine special for offshore platform Technical Field The application relates to the technical field of nitrogen making machines, in particular to a special nitrogen making machine for an offshore platform. Background The nitrogen making machine is equipment based on air separation technology and is widely applied to the fields of petrochemical industry, offshore platforms, food preservation and the like. The offshore platform has a severe environment with high salt fog and inflammability and explosiveness, chloride ions in the salt fog are easy to corrode equipment structures and pipelines, the service life of the equipment is reduced, potential safety hazards are easy to cause in the flammable gas environment of the platform, and the nitrogen generator is required to have explosion-proof performance. Therefore, the special nitrogen making machine for the offshore platform needs to be compatible with the design of salt fog prevention and explosion prevention, and is suitable for severe marine working conditions. The core working principle of the nitrogen making machine is mainly an adsorption separation method, and the carbon molecular sieve is used as a core material for making nitrogen and is extremely sensitive to water vapor. Therefore, in order to prevent the inactivation and scrapping of the core material, the air needs to be subjected to water-gas separation, which is a pre-necessary procedure for ensuring the normal operation of the nitrogen making machine. The front end of the existing nitrogen making machine is usually provided with a dryer for removing water vapor in the output air of the air compressor. However, under special working conditions such as offshore platforms, the water vapor content in the offshore air is far higher than that in the land environment, which results in heavy dehumidification burden of the dryer. The alumina adsorbent in the dryer can frequently reach an adsorption saturation state, so that the adsorption effect is reduced, the alumina is required to be subjected to desorption and regeneration treatment frequently so as to recover the adsorption capacity of the alumina, and the operation and maintenance workload and the cost of equipment are increased, so that the optimization is further improved. Disclosure of Invention In order to reduce the dehumidification burden of the dryer, the application provides a special nitrogen generator for an offshore platform. The application provides a special nitrogen making machine for an offshore platform, which adopts the following technical scheme: The special nitrogen making machine for the offshore platform comprises a nitrogen making machine main body, wherein an oil remover, a dryer, a filter and a clean air buffer tank are sequentially arranged at the front end of the nitrogen making machine main body along the gas transmission direction, a centrifugal chamber, a condensing chamber and an adsorption chamber which are sequentially communicated are respectively arranged in the oil remover, the inlet end of the centrifugal chamber is used for being connected with the output end of an air compressor, the outlet end of the adsorption chamber is connected with the inlet end of the dryer, and an oil absorption filter element is arranged in the adsorption chamber. Through adopting foretell technical scheme, set gradually degreaser, desicator, filter and clean air buffer tank in the front end of nitrogen making machine main part, provide "oilless, anhydrous, dust-free" clean compressed air for nitrogen making machine main part, guarantee the steady operation of nitrogen making technology. The centrifugal chamber, the condensing chamber and the adsorption chamber are respectively arranged in the oil remover, high-pressure air output by the air compressor enters the centrifugal chamber, and liquid oil drops, large-particle-size oil mist and condensed water drops in the air are separated under the action of centrifugal force, so that the first separation is realized. After the air in the centrifugal chamber enters the condensing chamber, the temperature difference changes, so that oil mist and water vapor in the air are condensed into liquid tiny oil drops and water drops, and the second separation is realized. Then the air enters the adsorption chamber and is further adsorbed through the oil absorption filter element, so that the third separation is realized, the water vapor and the oil mist in the air are greatly reduced, and the dehumidifying load of the dryer is reduced. Optionally, install the box in the condensation chamber, have the condensation runner in the installation box, the one end intercommunication centrifugal chamber of condensation runner, the other end intercommunication adsorption chamber, the condensation runner is the snakelike and winds and establish. By adopting the technical scheme, the condensing flow channel is arranged in a serpentine shape, the detention time of air in the condensing flow cha