CN2611729Y

CN2611729Y - Nitrogen filling trolley

Info

Publication number: CN2611729Y
Application number: CN 03229074
Authority: CN
Inventors: 王祖林; 程秦雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-27
Filing date: 2003-02-27
Publication date: 2004-04-14
Anticipated expiration: 2013-02-27

Abstract

A nitrogen blanketing dolly referring to plenum device field is a nitrogen charging device designed aim to the problem that when a nitrogen cylinder directly charges an accumulator or a high pressure vessel, if the pressure in the container need to charge is higher than the pressure in the nitrogen cylinder, the direct charging will be failure, and aim to raise the nitrogen utilization ratio. The nitrogen blanketing dolly is formed by a hydraulic pressure device, a circuit, a gas path, and a nitrogen supercharging device. The design highlights are that the dolly is provided with the nitrogen supercharging device; end caps of the two ends of the cylinder are provided with a mandril; two terminals of the hydraulic fluid chamber and gas chamber are provided with limit switches. A piston sends out a reversing signal to a solenoid change-over valve via push of the mandril to the limit switches, then the hydraulics pressure system supercharged, the piston unceasingly reciprocated, the supercharged gas inputting into the pressure vessel, until the demanded pressure is reached and the device is automatically stopped. If the dolly is connected to the gas path system of the pressure vessel, the dolly could act an autoinflation and pressure-maintained function. The nitrogen blanketing dolly is suitable for the field that need to charge a high pressure vessel with high pressure gas in metallurgy and electric power vocation.

Description

Fill the nitrogen dolly

Technical field

The utility model relates to the plenum field.

Background technique

At present, nitrogen bottle commonly used directly gives pressurized container, when accumulator fills nitrogen, and its maximum pressure is 13.5Mpa, fills that to finish in the nitrogen bottle of back remaining nitrogen more, causes certain waste.If the nitrogen that pressurized container need fill is higher than 13.5Mpa, nitrogen bottle just can't directly be inflated to high-pressure bottle.

Summary of the invention

The purpose of this utility model is to provide a kind of pressure higher, the portable nitrogen dolly that fills to related domain, when being higher than nitrogen bottle air pressure to solve nitrogen bottle and the required inflation pressure of accumulator, and the problem that can't inflate.Existing accompanying drawings, its feature is described as follows: fill the nitrogen dolly and be made up of limit switch, high-pressure oil pipe, electric control box, high-pressure air pipe, nitrogen supercharging device, solenoid directional control valve, motor etc., the nitrogen supercharging device is to be made of switch base, push rod, spring, cylinder body, piston, one-way valve etc.; It is characterized in that on dolly 15, being connected and fixed nitrogen supercharging device 6; Establish piston 30 in the cylinder body 28 in the nitrogen supercharging device, U-shaped seal ring 29, guide ring 31 and hole back-up ring 32 is housed on piston, the two end part of cylinder body are connecting end cap 26, and by 27 sealings of 0 shape seal ring; An end cap is provided with relief opening and suction port, and one-way valve 34 is housed respectively therein, and the another end cap is provided with oil inlet and outlet; Two end caps are connected with switch base 20 respectively, are provided with limit switch 1 in the switch base; U-shaped seal ring 22 is housed between push rod and the end cap.Be provided with push rod 23, spring 24 in the described end cap 26, pocketed springs 24 on push rod 23.Fill nitrogen vehicle structure compactness, volume is little, noise is low, easy to operate, pumping rate is fast.Effect as if just realizing automatic inflatable in the air-channel system that it is connected pressurized container is applicable to industries such as metallurgy, mine, oil, machinery, electric power, lifting, transportation, boats and ships, military project, needs fill to high-pressure bottle the field of pressurized gas.

Description of drawings

Fig. 1 is a main TV structure schematic representation of the present utility model;

Fig. 2 is the right elevation of Fig. 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is the rear view of Fig. 1;

Fig. 5 is the worm's eye view of Fig. 1;

Fig. 6 is the plan view of Fig. 1;

Fig. 7 is a nitrogen supercharging apparatus structure schematic representation.

Figure number and title: 1, limit switch, 2, high-pressure oil pipe, 3, electric control box, 4, handrail, 5, high-pressure air pipe, 6, the nitrogen supercharging device, 7, solenoid directional control valve, 8, motor, 9, the valve piece, 10, air-strainer, 11, hoisting ring, 12, relief valve, 13, level meter, 14, fuel tank, 15, dolly, 16, switch, 17, pressure gauge with electric contact, 18, oil temperature control instrument, 19, wheel, 20, switch base, 21, dust ring, 22, the U-shaped seal ring, 23, push rod, 24, spring, 25, gland nut, 26, end cap, 27,0 shape seal ring, 28, cylinder body, 29, the U-shaped seal ring, 30, piston, 31, guide ring, 32, the hole back-up ring, 33, gland nut, 34, tip-lever support, 35, one-way valve.

Embodiment

Mode of execution is with the working procedure of nitrogen supercharging device and be connected to example.Filling the nitrogen dolly is made up of hydraulic system, circuitry, air-channel system, control system, nitrogen supercharging device, traveller, the suction port on nitrogen supercharging device 6 air cavity tops is connected with nitrogen bottle, relief opening is connected with high-pressure bottle, and this high-pressure bottle comprises the high-pressure bottle of accumulator class.The oil inlet and outlet of oil pocket bottom is connected with hydraulic system.Connect power supply, the primer fluid pressing system is opened the nitrogen bottle valve, and nitrogen enters the air cavity of nitrogen supercharging device through one-way valve 34, and promotes piston 30, and piston is moved to cylinder body 28 bottoms.Send instruction when touching oil pocket limit switch 1,7 commutations of instruction solenoid directional control valve, hydraulic system supercharging by push rod 23.Pressure oil enters in the oil pocket of nitrogen supercharging device and promotes piston 30 to the motion of air cavity direction by solenoid directional control valve, make nitrogen supercharging and enter high-pressure bottle through one-way valve 34.When piston 30 touches air cavity limit switch 1 again, the hydraulic system pressure release, the pressed gas of nitrogen bottle just enters the nitrogen supercharging device once more.The to-and-fro motion that piston so goes round and begins again constantly charges into nitrogen in the high-pressure bottle, when required working pressure with autostop.Sequence number that does not below relate to and title all are to fill the assembly parts of nitrogen dolly, are to implement to fill the indispensable part of nitrogen, all belong to the conventional machinery part, so be not described in detail.

Claims

1, a kind of nitrogen dolly that fills, be made up of limit switch, high-pressure oil pipe, electric control box, high-pressure air pipe, nitrogen supercharging device, solenoid directional control valve, motor etc., the nitrogen supercharging device is to be made of switch base, push rod, spring, cylinder body, piston, one-way valve etc.; It is characterized in that on dolly (15), being connected and fixed nitrogen supercharging device (6); Establish piston (30) in the cylinder body (28) in the nitrogen supercharging device, U-shaped seal ring (29), guide ring (31) and hole back-up ring (32) is housed on piston, the two end part of cylinder body are connecting end cap (26), and are sealed by 0 shape seal ring (27); An end cap is provided with relief opening and suction port, and one-way valve (34) is housed respectively therein, and the another end cap is provided with oil inlet and outlet; Two end caps are connected with switch base (20) respectively, are provided with limit switch (1) in the switch base; U-shaped seal ring (22) is housed between switch base and the end cap.

2, the nitrogen dolly that fills according to claim 1 is characterized in that being provided with in the end cap (26) push rod (23), spring (24), goes up pocketed springs (24) at push rod (23).