APU nitrogen purging device

Abstract

The utility model discloses an APU nitrogen purging device, and relates to the technical field of APU nitrogen purging, the APU nitrogen purging device comprises a connecting pipe, and an air inlet channel is arranged in the connecting pipe; a rotating nozzle is rotationally arranged at one end of the connecting pipe; an air outlet channel is formed in the rotating spray head; the air outlet channel is communicated with the air inlet channel; a plurality of nozzles are annularly and uniformly formed in one end, deviating from the connecting pipe, of the rotating nozzle; the nozzles are communicated with the air outlet channel; rotating shafts are rotationally mounted in the nozzles; baffles are fixedly connected to the rotating shafts; a torsional spring is fixedly connected between the baffle and the rotating shaft; the baffle is attached to the inner wall of the nozzle, the caliber of the nozzle can be automatically adjusted by designing the rotating baffle, the recoil force pushes the rotating spray head to rotate, and the range of blowing the interior of the resin bed by the nozzle is widened; and meanwhile, a baffle is pushed to extrude a torsional spring, so that the baffle rotates to reduce blocking to a nozzle, the air injection pressure is properly reduced, and damage to an air supply pipeline caused by too high air pressure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of APU nitrogen purge, in particular to an APU nitrogen purge device. Background Art

[0002] APU (Auxiliary Power Unit) nitrogen purging is an operation performed in specific industrial environments, especially in situations where strict control of gas composition and humidity is required. The main purpose of nitrogen purging is to use the inert properties of nitrogen to remove unnecessary gases (such as oxygen, water vapor, etc.) and other impurities in the system or equipment to create a stable, dry and oxygen-free environment.

[0003] A spinning nozzle disclosed in Chinese patent CN218554431U includes: a connecting pipe, an inner pipe wall of which is provided with a bearing mounting portion; a bearing, which is installed on the bearing mounting portion; a nozzle body, which has a connecting shaft section, the connecting shaft section is installed on the bearing, and one end of the connecting shaft section extending to the outside of the connecting pipe is provided with a nozzle, a feed channel is opened inside the connecting shaft section, and the nozzle is provided with at least two discharge channels, the discharge channels are connected to the feed channel, and the discharge channels extend to the surface of the nozzle to form a fluid outlet.

[0004] The above-mentioned existing nozzle can be installed in the purging equipment. When the nozzle is in use, the recoil force of the airflow is used to act on the nozzle. Under the action of the reaction force and the bearing, the nozzle body rotates around the axis of the connecting shaft section, so that the airflow can be purged in all directions; however, the nozzle cannot adjust the size of the nozzle orifice. When the air supply pressure is too high, the pressure in the feed channel and the fluid outlet is likely to exceed the limit value; and then the air supply pipeline is damaged due to the excessive air pressure, which shortens the service life of the nozzle.

[0005] In order to solve the above problems, the utility model proposes an APU nitrogen purge device. Utility Model Content

[0006] In order to solve the problems existing in the background technology, the utility model proposes an APU nitrogen purge device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an APU nitrogen purge device, comprising a connecting pipe, an air inlet is provided inside the connecting pipe; a rotating nozzle is rotatably provided at one end of the connecting pipe; an air outlet is provided inside the rotating nozzle; and the air outlet is connected to the air inlet.

[0008] The end of the rotating nozzle away from the connecting pipe is evenly provided with a plurality of nozzles in a ring shape; the nozzles are all connected to the air outlet; a rotating shaft is rotatably installed inside the nozzle; a baffle is fixedly connected to the rotating shaft; a torsion spring is fixedly connected between the baffle and the inner wall of the nozzle; the torsion spring is sleeved on the rotating shaft; and the baffle is in contact with the inner wall of the nozzle.

[0009] Preferably, a connecting ring is fixedly connected to the outer side of the end of the connecting pipe facing away from the rotating nozzle.

[0010] Preferably, the inner diameter of the air outlet passage is smaller than the inner diameter of the air inlet passage.

[0011] Preferably, a rotating groove is formed on the inner wall of the end of the connecting pipe corresponding to the rotating nozzle; a clamping ring is fixedly connected to the end of the rotating nozzle corresponding to the connecting pipe; the clamping ring is rotatably installed inside the rotating groove.

[0012] Preferably, the baffle is arc-shaped; the curvature of the baffle is the same as the curvature of the nozzle.

[0013] Advantageous Effects

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In this APU nitrogen purging device, by designing a rotating baffle, the diameter of the nozzle can be automatically adjusted, thereby increasing the flow rate of the nitrogen gas ejected, and enabling the reaction force to push the rotating nozzle to rotate, increasing the purging range of the resin bed by the nozzle, and improving the efficiency of nitrogen purging; at the same time, the baffle is pushed to compress the torsion spring, causing the baffle to rotate and thus reducing the blockage of the nozzle, appropriately reducing the jet pressure, avoiding damage to the supply pipeline due to excessive air pressure, and thereby increasing the service life of the nozzle. Brief Description of the Drawings

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a cross-sectional view of the interior of the present utility model;

[0019] Figure 3 is a schematic diagram of the connection position of the baffle of the present utility model;

[0020] Figure 4 is the present utility model Figure 3 Enlarged schematic view of part A in.

[0021] Reference numerals: 1, connecting pipe; 2, air inlet passage; 3, rotating nozzle; 4, clamping ring; 5, nozzle; 6, rotating shaft; 7, baffle; 8, connecting ring; 9, air outlet passage. Detailed Description of the Embodiment

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] See also Figures 1-4 The utility model provides a technical solution: an APU nitrogen purge device, comprising a connecting pipe 1, an air inlet 2 is opened inside the connecting pipe 1; a rotating nozzle 3 is rotatably arranged at one end of the connecting pipe 1.

[0024] Specifically, a rotating groove is provided on the inner wall of one end of the connecting pipe 1 corresponding to the rotating nozzle 3; a clamping ring 4 is fixedly connected to one end of the rotating nozzle 3 corresponding to the connecting pipe 1; and the clamping ring 4 is rotatably installed inside the rotating groove.

[0025] An air outlet 9 is provided inside the rotating nozzle 3 ; the air outlet 9 is communicated with the air inlet 2 .

[0026] The inner diameter of the air outlet 9 is smaller than the inner diameter of the air inlet 2 , so that the high-pressure nitrogen will be accelerated after entering the air outlet 9 .

[0027] The end of the rotating nozzle 3 facing away from the connecting pipe 1 is evenly provided with a plurality of nozzles 5 in a ring shape; the nozzles 5 are all connected to the air outlet 9; a rotating shaft 6 is rotatably installed inside the nozzle 5; a baffle 7 is fixedly connected to the rotating shaft 6; a torsion spring is fixedly connected between the baffle 7 and the inner wall of the nozzle 5; the torsion spring is sleeved on the rotating shaft 6; and the baffle 7 fits the inner wall of the nozzle 5.

[0028] In the initial state, the torsion spring causes the baffle 7 to be tilted inside the nozzle 5, thereby blocking part of the nitrogen flow.

[0029] Furthermore, the baffle plate 7 and the nozzle 5 are both arranged in an arc shape; the curvature of the baffle plate 7 is the same as the curvature of the nozzle 5 .

[0030] A connecting ring 8 is fixedly connected to the outer side of one end of the connecting pipe 1 away from the rotating nozzle 3; the connecting ring 8 is used to connect to an external high-pressure nitrogen source.

[0031] Working principle:

[0032] In use, the connecting pipe 1 is connected to a high-pressure nitrogen source through the connecting ring 8, and the rotating nozzle 3 is directed towards the resin bed. When nitrogen is needed, the nitrogen supply is turned on. Nitrogen enters the air outlet channel 9 through the air inlet channel 2. Since the inner diameter of the air outlet channel 9 is smaller than that of the air inlet channel 2, the high-pressure nitrogen accelerates when entering the air outlet channel 9, increasing the speed of the nitrogen entering the nozzle 5. Moreover, the inclined baffle 7 in the nozzle 5 reduces the aperture of the nozzle 5, further increasing the nitrogen flow rate. As a result, the speed of the nitrogen when it is ejected is relatively high, and the reaction force then drives the rotating nozzle 3 to rotate, making the range of purging the resin bed by the nozzle 5 more comprehensive and improving the efficiency of nitrogen purging.

[0033] When the supply pressure is too high, if the pressure in the air outlet channel 9 and the nozzle 5 exceeds the limit value, at this time the nitrogen pushes the baffle 7 and then compresses the torsion spring, causing the baffle 7 to rotate, thereby reducing the blockage of the nozzle 5, appropriately reducing the jet pressure, and avoiding damage to the gas supply pipeline caused by excessive air pressure and excessive vibration of the rotating nozzle 3 due to too high a rotational speed, so as to reduce the damage to the nozzle caused by vibration and thus improve the service life of the nozzle.

[0034] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. An APU nitrogen purge device, comprising a connecting pipe (1), characterized in that: The connecting pipe (1) is provided with an air inlet (2); a rotating nozzle (3) is rotatably provided at one end of the connecting pipe (1); an air outlet (9) is provided inside the rotating nozzle (3); the air outlet (9) is connected to the air inlet (2); a plurality of nozzles (5) are evenly provided in a ring shape at one end of the rotating nozzle (3) away from the connecting pipe (1); the nozzles (5) are all connected to the air outlet (9); a rotating shaft (6) is rotatably installed inside the nozzles (5); a baffle (7) is fixedly connected to the rotating shaft (6); a torsion spring is fixedly connected between the baffle (7) and the inner wall of the nozzle (5); the torsion spring is sleeved on the rotating shaft (6); and the baffle (7) fits the inner wall of the nozzle (5).

2. The APU nitrogen purge device according to claim 1, characterized in that: A connecting ring (8) is fixedly connected to the outer side of one end of the connecting pipe (1) away from the rotating spray head (3).

3. The APU nitrogen purge device according to claim 1, characterized in that: The inner diameter of the air outlet passage (9) is smaller than the inner diameter of the air inlet passage (2).

4. The APU nitrogen purge device according to claim 1, characterized in that: A rotating groove is provided on the inner wall of one end of the connecting pipe (1) corresponding to the rotating spray head (3); a clamping ring (4) is fixedly connected to one end of the connecting pipe (1) corresponding to the rotating spray head (3); and the clamping ring (4) is rotatably mounted inside the rotating groove.

5. The APU nitrogen purge device according to claim 1, characterized in that: The baffle plate (7) and the nozzle (5) are both arranged in an arc shape; the curvature of the baffle plate (7) is the same as the curvature of the nozzle (5).

Images