Multifunctional portable nitrogen charging device

Abstract

The utility model discloses multifunctional portable nitrogen charging equipment which comprises a PU (polyurethane) pipe, a pressure reducing valve, a pressure regulating valve, an electromagnetic valve, a pressure gauge and a sealed shell, and the pressure reducing valve, the pressure regulating valve, the electromagnetic valve and the pressure gauge are respectively arranged in an inner cavity of the sealed shell; a main power switch, a pressure gauge switch, a valve switch and a charging port are sequentially arranged on the front face of the sealing shell from top to bottom. A connector is arranged at the bottom of the sealing shell and used for being connected with an external corrugated pipe. The PU pipe is connected with an outlet in the top of the sealing shell in a matched mode. The multifunctional portable nitrogen charging device can be directly connected with a standard universal 10-liter or 40-liter nitrogen cylinder, the nitrogen charging pressure can be preset to be not larger than 0.35 MPa, and the pressure cannot be adjusted at will or misoperation cannot be conducted in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of weapon equipment, in particular to a multifunctional portable nitrogen charging device. Background Art

[0002] The maintenance and repair of weapons and equipment is an important foundation for the success of combat operations. With the continuous improvement of the technical level of equipment, weapons and equipment have become more and more sophisticated, which has put forward higher requirements for daily maintenance, and the importance of maintenance and support work has become increasingly prominent. The fire control system sight is such a precision weapon and equipment. It requires nitrogen filling once a week, and nitrogen is immediately replaced when moisture is found, and an air tightness inspection is carried out once a year. According to the previous troop survey, many troops still have the following problems and needs in the maintenance of this equipment:

[0003] (1) All troops are equipped with nitrogen generators, but they are large and heavy and cannot be carried and used in the field. Many troops do not perform nitrogen filling and nitrogen over-maintenance during field training.

[0004] (2) The design value of the nitrogen pressure in the fire control sight cannot exceed 0.35 MPa. If the pressure is higher than this, the equipment will be damaged. However, the pressure control valve on the nitrogen generator is manually operated, and the precision control error of the pressure is large. It often happens that the control is not timely, resulting in the sight being damaged due to pressure shock exceeding 0.35 MPa. Even experienced veterans sometimes operate carelessly. After damage, it can only be returned to the factory for repair, and the repair cycle is as long as more than 3 months, which seriously affects the training of the troops.

[0005] Therefore, a portable nitrogen filling and nitrogen passing device is specially designed which can be directly connected to a standard 10-liter or 40-liter nitrogen cylinder. The device can preset a nitrogen filling pressure of no more than 0.35 MPa and cannot adjust the pressure at will or operate incorrectly during use. The device can realize the nitrogen passing and defogging function in a humid outdoor environment. Different types of gas nozzle connectors can be added to realize the nitrogen filling of each sight. A certain number of desiccants can be placed to realize the replacement of expired desiccant equipment. The device is equipped with a high-precision barometer to detect the air tightness of the equipment in time. The device is of great practicality, has wide promotion potential in the army, and has broad application prospects. Utility Model Content

[0006] In view of the above-mentioned existing deficiencies, the utility model aims to provide a multifunctional portable nitrogen filling device.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model provides a multifunctional portable nitrogen charging device, comprising a PU tube, a pressure reducing valve, a pressure regulating valve, a solenoid valve, a pressure gauge and a sealed shell, wherein the pressure reducing valve, the pressure regulating valve, the solenoid valve and the pressure gauge are respectively arranged in an inner cavity of the sealed shell; a main power switch, a pressure gauge switch, a valve switch and a charging port are sequentially arranged on the front of the sealed shell from top to bottom; an interface is arranged at the bottom of the sealed shell for connecting an external bellows; the PU tube and the outlet at the top of the sealed shell are matched and connected with each other to form a multifunctional portable nitrogen charging device.

[0009] Preferably, the nitrogen filling pressure of the nitrogen filling device is preset to be no more than 0.35 MPa to avoid the nitrogen filling pressure being greater than 0.35 MPa to prevent damage to the equipment.

[0010] Preferably, the nitrogen filling device is connected to the nitrogen cylinder via a bellows; the nitrogen filling device is connected to the equipment via a PU tube.

[0011] Preferably, the nitrogen filling device is 260 mm long, 220 mm wide and 200 mm high.

[0012] Preferably, the length of the PU tube is greater than 4 m.

[0013] The beneficial effects of the utility model are as follows: the multifunctional portable nitrogen filling device in the utility model is equipped with a high-precision barometer to timely detect the air tightness of the equipment; it can be directly connected to a standard universal 10-liter or 40-liter nitrogen cylinder through a bellows, the preset nitrogen filling pressure is not greater than 0.35 MPa and the pressure cannot be adjusted arbitrarily or misoperated during use, so that the nitrogen defogging function in an outdoor humid environment can be achieved; the nitrogen filling of each sight can be achieved through the air nozzle connector; at the same time, a certain amount of desiccant is placed to achieve the replacement of equipment with expired desiccant. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the structure of a multifunctional portable nitrogen filling device provided in an embodiment of the utility model;

[0016] Figure 2 Flow chart for inflation and leak detection.

[0017] Description of reference numerals;

[0018] PU tube 1, sealing shell 2, interface 3. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1, as Figure 1 As shown, a multifunctional portable nitrogen charging device comprises a PU tube 1, a pressure reducing valve, a pressure regulating valve, a solenoid valve, a pressure gauge and a sealed shell 2, wherein the pressure reducing valve, the pressure regulating valve, the solenoid valve and the pressure gauge are respectively placed in the inner cavity of the sealed shell 2; the front of the sealed shell 2 is provided with a main power switch, a pressure gauge switch, a valve switch and a charging port in sequence from top to bottom; the bottom of the sealed shell 2 is provided with an interface 3 for connecting an external bellows; the PU tube 1 is connected to the outlet at the top of the sealed shell 2 in cooperation with each other to form a multifunctional portable nitrogen charging device.

[0021] Furthermore, in an embodiment, the nitrogen filling pressure of the nitrogen filling device is preset to be no more than 0.35 MPa to avoid the nitrogen filling pressure being greater than 0.35 MPa to prevent damage to the equipment.

[0022] Further, such as Figure 2 As shown, the nitrogen filling device is connected to the nitrogen cylinder through a bellows; the nitrogen filling device is connected to the equipment through a PU pipe.

[0023] Furthermore, the nitrogen filling device is 260 mm long, 220 mm wide and 200 mm high.

[0024] Furthermore, the length of the PU tube is greater than 4 m.

[0025] In addition, it should be noted that the nitrogen filling device workflow is related to the inflation and leak detection of the protected object. The overall design process is as follows: Figure 2 , inflation and leak detection are achieved by controlling the on and off of the solenoid valve.

[0026] The main functions and working principles of the nitrogen filling device are as follows:

[0027] (1) Inflation - Fill the nitrogen in the high-pressure gas cylinder into the protected object through the pressure reducing valve and the pressure regulating valve to reach the specified pressure: connect the nitrogen cylinder and the pressure reducing valve through a bellows, and connect the equipment with a PU pipe. Turn on the main power supply, pressure gauge, and solenoid valve and slowly open the valve of the nitrogen cylinder. When the pressure gauge reaches the specified pressure, close the solenoid valve and then close the nitrogen cylinder;

[0028] (2) Nitrogen overfilling - nitrogen in the high-pressure gas cylinder is filled into the protected object through the pressure reducing valve and the pressure regulating valve, and discharged through the bleed screw: after filling to 35kpa, close the solenoid valve and then close the nitrogen cylinder, let it stand for 5 minutes and observe whether the pressure on the pressure gauge changes;

[0029] (3) Leak detection - Inflate the protected object to 35kpa, seal it and leave it to stand for a while to observe whether the internal pressure changes: connect the nitrogen bottle to the pressure reducing valve through a bellows, connect the PU pipe to the equipment, and unscrew the equipment bleed screw. Turn on the main power supply, pressure gauge, and solenoid valve and slowly open the nitrogen bottle valve to circulate the nitrogen in the equipment, and close it after the specified time.

[0030] In addition, it should be noted that once the electro-optical fire control sight becomes damp and foggy in a humid environment outdoors, it must be immediately maintained with nitrogen to remove the mist, otherwise it will directly affect the training effect and equipment safety.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. Multifunctional portable nitrogen filling device, characterized by: It includes a PU tube, a pressure reducing valve, a pressure regulating valve, a solenoid valve, a pressure gauge and a sealed shell, wherein the pressure reducing valve, the pressure regulating valve, the solenoid valve and the pressure gauge are respectively placed in the inner cavity of the sealed shell; the front of the sealed shell is provided with a main power switch, a pressure gauge switch, a valve switch and a charging port in sequence from top to bottom; the bottom of the sealed shell is provided with an interface for connecting an external bellows; the PU tube and the outlet at the top of the sealed shell are connected with each other to form a multifunctional portable nitrogen charging device.

2. A multifunctional portable nitrogen filling device as claimed in claim 1, characterized in that: The nitrogen filling pressure of the nitrogen filling device is preset to be no greater than 0.35 MPa.

3. A multifunctional portable nitrogen filling device as claimed in claim 1, characterized in that: The nitrogen filling device is connected to the nitrogen cylinder through a bellows; the nitrogen filling device is connected to the equipment through a PU pipe.

4. A multifunctional portable nitrogen filling device as claimed in claim 1, characterized in that: The nitrogen filling device is 260 mm long, 220 mm wide and 200 mm high.

5. The multifunctional portable nitrogen filling device as claimed in claim 1, characterized in that: The length of the PU tube is greater than 4 m.

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