Ventilation preheating system for polar scientific investigation ship

Abstract

The utility model provides a polar region scientific investigation ship ventilation preheating system which is composed of boilers, steam distribution valve boxes, compressed air, steam users and automatic drain valves, one boiler is connected with one steam distribution valve box through a pipeline to form a heat supply pipeline, a plurality of heat supply pipelines are arranged in a redundancy mode, and normally-closed isolating valves are arranged among the heat supply pipelines. The device is suitable for the polar region environment, and the steam with high heat utilization rate, high heat exchange efficiency and low cost is used for ventilation and preheating; through design innovation, a conventional ship steam heating system is designed and transformed, so that the steam heating system can be applied to the polar region environment, the transformation cost is low, and the performance is stable and safe.

Description

Technical Field

[0001] The utility model belongs to the technical field of ship design and construction, and particularly relates to a ventilation and preheating system for a polar research vessel. Background Art

[0002] Existing polar research vessels require cold-weather protection. Cabin cold-weather protection is crucial for ship operations and crew accommodation, and cabin ventilation is key to this design. Currently, cabin fresh air is heated by using steam from the ship's own boiler to preheat the air inlet, which can be preheated from -35°C to 5°C. This prevents cold air from entering the cabin, which could cause icing or damage equipment.

[0003] Compared with heat medium water and ethylene glycol preheating, steam preheating has the advantages of high heat utilization, high heat exchange efficiency, low cost, and energy saving. However, there is also the risk of ice damage to the steam system after the boiler is offline, which reduces the ship's ability to resist risks in polar operations. Utility Model Content

[0004] In order to solve the technical problems in the existing technology, the utility model provides a ventilation preheating system for a polar research vessel, which consists of a boiler, a steam distribution valve box, compressed air, a steam user, and an automatic steam trap. A boiler is connected to a steam distribution valve box through a pipeline to form a heating pipeline. Multiple heating pipelines are redundantly set, and normally closed isolation valves are set between the multiple heating pipelines.

[0005] Furthermore, the steam distribution valve box is provided with independent branch pipes and equipped with isolation valves, so that all different types of user pipelines are relatively independent.

[0006] Furthermore, automatic drain valves are added to the condensate pipes after all ventilation preheaters.

[0007] Furthermore, a compressed air purge pipeline is added to the steam distribution valve box.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The utility model is suitable for use in polar environments, and utilizes steam with high thermal utilization rate, high heat exchange efficiency and low cost for ventilation preheating. Through design innovation, the conventional ship steam heating system is redesigned and modified, so that the steam heating system can be applied to polar environments, with low modification cost and stable and safe performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0011] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Reference Figure 1 This application proposes a ventilation preheating system for a polar research vessel, which consists of a boiler, a steam distribution valve box, compressed air, a steam user, an automatic steam trap, etc.

[0013] The ventilation preheating system of polar research vessels generates steam from boilers and distributes it to various steam users through steam distribution valve boxes. The design principles and innovations are as follows:

[0014] 1. Add redundant design functions to the ventilation and preheating system, and add a normally closed isolation valve in the middle to ensure that the damage or loss of any component will not affect the operation of the entire system;

[0015] 2. Independent branches are set up on the steam distribution valve box and equipped with isolation valves to make all different types of user pipelines relatively independent, ensuring that if a user pipeline is damaged or lost, it will not affect the normal use of other users;

[0016] 3. Automatic drain valves are added to the condensate pipes after all ventilation preheaters. When the steam loss temperature drops and condensate is generated in the pipes, the valves can automatically drain the water to avoid ice formation inside the pipes and damage to the pipes.

[0017] 4. The steam distribution valve box adds a compressed air purge pipeline, which is normally closed during normal system operation. When the steam is lost, the isolation valve can be manually opened to purge the entire system and completely purge the residual condensate in the steam pipeline to avoid ice formation inside the pipeline and damage to the pipeline.

[0018] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent changes and modifications made within the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. A ventilation and preheating system for a polar research vessel, consisting of a boiler, a steam distribution valve box, compressed air, steam users, and an automatic steam trap, characterized by: A boiler is connected to a steam distribution valve box through a pipeline to form a heating pipeline. Multiple heating pipelines are set up for redundancy, and normally closed isolation valves are set between the multiple heating pipelines.

2. The system according to claim 1, wherein: The steam distribution valve box is provided with independent branch pipes and equipped with isolation valves, so that all different types of user pipelines are relatively independent.

3. The system according to claim 1, wherein: Add automatic drain valves to the condensate pipes after all ventilation preheaters.

4. The system according to claim 1, wherein: A compressed air purge pipeline is added to the steam distribution valve box.

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