CN2209346Y

CN2209346Y - Overflow-proof self-sealing system

Info

Publication number: CN2209346Y
Application number: CN 94230802
Authority: CN
Inventors: 贺明
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-17
Filing date: 1994-11-17
Publication date: 1995-10-04
Anticipated expiration: 2004-11-17

Abstract

The utility model introduces an overflow-proof self-sealing system, which is composed of a valve, a hydraulic cylinder, a gas-liquid separation chamber, a communicating pipe and a pressure taking device. The utility model is characterized in that through the flow of the surplus liquid back of the supercritical liquid level in a liquid storage container and the conduction of the liquid in the pressure taking communicating pipe, the hydraulic cylinder which is communicated with the gas-liquid separation chamber starts working. Thereby, the valve on an input pipeline which is connected with a piston in the cylinder is driven to be closed, which makes the liquid stop conveying into the container. Thus, the purpose of prevention of ' overflow' is achieved. The utility model has the advantages of simple structure, low cost and high safety, and does not need any additional energy source. The utility model is superior to various overflow-proof devices.

Description

Overflow-proof self-sealing system

The utility model relates to the self-styled system of a kind of anti-overflow, belongs to the automatic control of liquid device, is widely used in the control of oil product and chemical industry aqua liquid level and reports to the police.

At present, when refinery, oil depot and chemical plant during at input oil product or chemical industry liquor in oil tank and container, often because of whether can't determining in the liquid storage container canful, and " roof fall " excessive accident appears.In case this " roof fall " accident occurs, its consequence can't be expected: not only make product loss, contaminated environment, also can cause catastrophic failure, bring massive losses for country, enterprise and people's lives and properties.

For many years, in order to avoid producing this pernicious " roof fall " accident in oil, chemical industry, brainstrust is developed many warning systems and corresponding device thereof.That adopts at present has float-type, dry-reed, ultrasonic type, optical fiber type and a pressurized air warning system etc.But, the common defects of above-mentioned all warning devices is: all need external energies such as power supply or pressurized air, also need be equipped with a series of utility appliance such as solenoid valve, motorized valve or pneumatic valve simultaneously, not only investment is big, and in this place that ought to avoid using electric equipment as far as possible, if use the explosion-proof performance difference or use electric equipment for a long time, itself promptly be a kind of challenge to this kind place safety, be a big hidden danger of such place safety; Secondly, some in the above-mentioned multiple safety alarm device can not be cut off medium channel as many, are simple alarm type device; When producing dangerous situation, still need the staff to remove timely closing gate valve, because retardation time is longer, sometimes still can be because of in time closing gate valve or operating personnel's accountability difference do not cause the excessive accident of medium; Its three, in the above-mentioned multiple warning system,, cause false alarm through regular meeting owing to its structure, transmit principle and material aspect.Because it is inaccurate that it grasps precarious position, makes the staff at a loss as to what to do, causes the staff simply to close warning system, it is illusory that warning device equals.The refinery tank explosion accident of somewhere, 1 years East China is the false judgment that the staff makes the regular false alarm of warning device and causes.

The purpose of this utility model is: a kind of outside resources, safe and reliable, simple in structure, cheap that do not need is provided, can prevents the safety feature that medium overflows in the container effectively.

The self-styled system of the anti-overflow of this novelty is realized by following technical scheme.

The self-styled system of this anti-overflow is made up of valve (6), hydraulic cylinder (4), gas-liquid separation chamber (7), communicating pipe (3) and pressure obtaning device, valve (6) on it is characterized in that the piston rod of described hydraulic cylinder (4) in being located at cylinder body and not having a jar input oil pipe (5) links to each other, and this hydraulic cylinder (4) is gone up and communicated with gas-liquid separation chamber (7) through a connecting pipe (3) simultaneously; Described gas-liquid separation chamber (7) goes up in addition and is communicated with the pressure communicating pipe (2) of forming pressure obtaning device by an opening, and by being connected with other member of forming pressure obtaning device this pressure communicating pipe (2).

Described pressure obtaning device can have two kinds of forms to realize:

The described pressure obtaning device of the first is made up of pressure communicating pipe (2), float (8), push rod (9), valve (10), liquid storage container (11), its concrete structure is that described liquid storage container (11) places on the oil tank (1), its underpart is provided with a valve (10), and through this valve (10) and linking to each other pressure communicating pipe (2) in stretching into gas-liquid separation chamber (7); The valve rod of described valve (10) is provided with one and hangs on the push rod (9) on the liquid level in the oil tank simultaneously, and the termination of this push rod (9) is provided with one can be with the float of liquid level rising.

It two is that described pressure obtaning device can be made up of pressure communicating pipe (2) and oil tank (1), can rise directly being located at pressure communicating pipe (2) and the oil tank (1) of liquid storage container (11) similar action in warning liquid level place.

According to the self-styled system of the anti-overflow of above conceptual design, compare with existing warning device, its advantage be simple in structure, need not adopt class electrical equipments such as solenoid valve, motorized valve and air compressor machine, the hidden danger that does not exist existing equipment to exist; Can cut off intake line automatically owing to it simultaneously, thereby can prevent the generation of " roof fall " accident effectively, be a kind of not only energy-conservation but also inexpensive novel anti-overflow self-packer.

Accompanying drawing 1, accompanying drawing 2 are structural representations of the present utility model;

Wherein shown in Figure 1 is the pressure obtaning device formula that adds, and Fig. 2 is simple and easy pressure obtaning device formula, and it is actual that Fig. 1, Fig. 2 provide is to realize two kinds of embodiment of the present utility model.

Provide embodiment below in conjunction with accompanying drawing:

From Fig. 1 we as can be seen: its pressure obtaning device is located on the oil tank, valve (10) by its pressure liquid container (11) bottom setting, pressure liquid container chamber (11) was linked to each other with pressure communicating pipe (2), hang a push rod (9) under the valve rod of described valve (10) from above, a float (8) is established in the termination of push rod.In oil tank oil-feed process, when oily or other liquid pass through oil tank input pipe (5), enter continuously when arriving critical conditions in the jar, along with importing constantly raising of liquid level, float (8) is rising thereupon also; Slowly rising along with float (8), under the effect of push rod (9), the valve (10) that is positioned under the pressure liquid container (11) is also opened gradually, in the process that this valve (10) starts, be stored in to get and liquid runs down pressure communicating pipe (2) enter gas-liquid separation chamber (7) in the liquid container (11), liquid level in the gas-liquid separation chamber (7) is slowly risen: and because the rising of its liquid level, make the part gas-liquid enter hydraulic cylinder (4) by communicating pipe (3), the pressure that piston in the hydraulic cylinder (4) is born increases gradually, and to bottom offset, compression spring; Simultaneously the valve rod on the valve (6) that links to each other with piston rod is moved down, finally cut off the oil circuit of input pipe (5).Make oil no longer import oil tank and can reach anti-" roof fall " accident.

Shown in Figure 2 is realizes simple form of the present utility model, it will directly be located on the oil tank (1) pressure communicating pipe (2), but in this scheme, this pressure communicating pipe (2) top should be located at the oil tank critical liquid level place that reports to the police, make oil tank (1) and pressure communicating pipe (2) constitute pressure obtaning device.The course of work of this system is as follows: when oily or other liquid that enters from oily input pipe (5) enters oil tank (1) or container, along with liquid level in the jar rises, in case liquid level surpasses critical conditions, excess liquid promptly enters gas-liquid separation chamber (7) by pressure communicating pipe (2), equally again from communicating pipe (3) entering hydraulic cylinder (4), and the valve (6) on the downward displacement drive input pipe of cylinder inner carrier (5) is closed, and liquid is stopped to container transport, reach anti-" roof fall " accident.

The difference of embodiment 1,2 only is: example 2 usefulness jar interior liquid is as the hydraulic pressure transfer medium, and embodiment 1 then uses auxiliary liquid as the hydraulic pressure transfer medium by a mechanical drive.

Claims

1, the self-styled system of a kind of anti-overflow is made up of valve (6), hydraulic cylinder (4), gas-liquid separation chamber (7), communicating pipe (3) and pressure obtaning device, it is characterized in that: the piston rod of described hydraulic cylinder (4) in being located at cylinder body links to each other with valve (6) on the oil tank input pipe (5), and this hydraulic cylinder (4) is gone up and communicated with gas-liquid separation chamber (7) through a connecting pipe (3) simultaneously; Described gas-liquid separation chamber (7) goes up in addition and is communicated with the pressure communicating pipe (2) of forming pressure obtaning device by an opening, and by being connected with other member of forming pressure obtaning device this pressure communicating pipe (2).

2, the self-styled system of anti-overflow according to claim 1, it is characterized in that described pressure obtaning device is made up of pressure communicating pipe (2), float (8), push rod (9), valve (10), liquid storage container (11), its concrete structure is that described liquid storage container (11) places on the oil tank (1), its underpart is provided with a valve (10), and through this valve (10) and linking to each other pressure communicating pipe (2) in stretching into gas-liquid separation chamber (7); The valve rod of described valve (10) is provided with one and hangs on the push rod (9) that liquid makes progress in the oil tank simultaneously, and the termination of this push rod (9) is provided with a float (8) with the liquid level rising.

3, pressure obtaning device according to claim 1, it is characterized in that this pressure obtaning device also can be made up of pressure communicating pipe (2) and oil tank (1), concrete structure be directly be located at described pressure communicating pipe (2) can rise and the oil tank (1) of liquid storage container (11) similar action in warning liquid level place.