CN2901004Y

CN2901004Y - Double control type liquefied gas cylinder safety gasifier

Info

Publication number: CN2901004Y
Application number: CN 200420057626
Authority: CN
Inventors: 汤玉梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-10
Filing date: 2004-12-10
Publication date: 2007-05-16
Anticipated expiration: 2014-12-10

Abstract

A relief carburetor of double-control liquid gas cylinder comprises a heat up blanket covered on the surface of the double-control liquid gas cylinder and an intelligence double channel digital control appearance, wherein, a resistance transducer 3 A and a pressure sensing device 3 B are provided on the signal input end of the intelligence double channel digital control appearance 12. The heat up blanket 2 consists of water proof, antiseptic, the flame proof protecting layer 7, the flame proof heat-insulating layer 8, the flame-proof heat insulation layer 9 and the temperature self-control metallic electrically- heated body 10. The utility model has the advantages of heating the cylinder directly, guaranteeing the desiccation of the cylinder surface, and preventing the cylinder from corrosion. The temperatures of the heat up blanket will not be higher than 45 degree, thereby the heating of the cylinder is kept in safe condition, and the liquefied gas can be evaporated completely. By setting the air pressure of the liquefied chlorine in the cylinder and adjusting the evaporation of the liquefied gas, the air pressure of the liquefied chlorine in the cylinder is controlled in a safe range, thereby guaranteeing the security of the utilization of chlorine.

Description

Double controlled cylinder for liquefied gas safety vaporizer

Technical field

The utility model belongs to a kind of dual control, safe heating equipment, and especially a kind of being used for changes into the gas process at liquid gas from liquid, gives the liquid gas steel cylinder outer table safety heating, liquid gas is fully transformed and can Quantitative yield becomes the device of gas.

Background technique

Liquid gas changes into the gas process from liquid, needs to absorb heat, and heat what absorb, and is then determining the evaporating capacity of liquid gas; When absorbing shortage of heat, the evaporating capacity of liquid gas does not then reach people's demand, must be by every means to the steel cylinder heating, to reach the optimum state of using liquid gas; But liquid gas in the bottle all can not be vaporized, but to keep certain amount, and to guarantee a due pressure in the bottle, bottle outer air can not be entered, otherwise a denier air enter in the bottle, mix with the liquefaction gas phase, will cause serious security incident.If temperature raises, pressure also rises thereupon, exceeds pipe safety pressure resistance scope, too security incident can take place.

People have for the method for liquid gas steel cylinder heating at present: drench the steel cylinder surface with warm water, steel cylinder is soaked in a tepid bath, perhaps use heat-flash light-illuminating steel cylinder surface etc.These methods not only can not reach the purpose that people regulate evaporating capacity, and can cause serious corrosion to steel cylinder, the more important thing is to be absolutely unsafe, and might cause the security incident that steel cylinder explodes because of overtemperature, superpressure.In order to keep a certain amount of liquid gas to steel cylinder, can only control the liquid gas that keeps in the steel cylinder with the method that scale claims usually at present, this method not only equipment input strengthens, and very loaded down with trivial details, but also is difficult to grasp and operation.

Summary of the invention

A kind of double controlled cylinder for liquefied gas safety vaporizer that the utility model provides in order to overcome existing shortcoming to liquid gas steel cylinder mode of heating, improves the effective utilization of liquid gas exactly, guarantees the safe in utilization of liquid gas.

Described double controlled cylinder for liquefied gas safety vaporizer by cover the cylinder for liquefied gas surface, have the heating blanket of fabulous automatic control temperature characteristics and have preset, regulate, the Intelligent Double Channel direct digital controller of control, warning function forms; Be connected to thermal resistance sensor 3A and pressure transducer 3B on the signal input part of Intelligent Double Channel controller 12, its output control terminal links to each other with heating blanket 2 through solid-state relay 11.Heating blanket 2 is made up of waterproof, anticorrosion, fire-resisting protection layer 7, fire-retardant heat insulation layer 8, anti-flaming thermal-insulation layer 9 and automatic temperature-control metal electric heating body 10; the top layer is water, anticorrosion, fire-resisting protection layer 7, sets gradually thermal insulation layer 8, anti-flaming thermal-insulation layer 9 and automatic temperature-control metal electric heating body 10 in it.Thermal resistance sensor 3A is located in the heating blanket 2, and pressure transducer 3B is located on the cylinder for liquefied gas mouth.

The beneficial effects of the utility model are: can guarantee the steel cylinder dry tack free directly to the steel cylinder heating, avoid steel cylinder to be corroded; The heating blanket surface temperature rise can not surpass 45 ℃, can guarantee the safety of steel cylinder heating; By setting steel cylinder surface temperature value, the heating value of regulating heating blanket offers the required additional heat of the boil-off gas scale of construction, and liquid gas is fully vaporized; By setting the atmospheric pressure value of liquid chlorine in the steel cylinder, the evaporating capacity of regulator solution oxidizing gases is controlled in the scope of a safety air pressure of liquid chlorine in the steel cylinder, to guarantee to use chlorine safety all the time.

By the described double controlled cylinder for liquefied gas safety vaporizer of forming from temperature control heating system, digital temperature control system and digital pneumatic control system, has the characteristic that A.T.C and limit temperature are arranged from the temperature control heating system, heating thermal limit value is 45 ℃, and overheating problem can not take place; Its digital temperature control system can pass through set temperature value, controls and regulates the steel cylinder surface automatically and add heat; And digital pneumatic control system is the effect by air pressure sensing device and numerical control system, can guarantee to keep in the cylinder for liquefied gas a certain amount of liquid gas.This kind not only controlled temperature but also controlled the double controlled design of air pressure, and not only vaporization has improved usefulness to liquid gas, and dual fail-safe also is provided for safety.Major character of the present utility model is dual control, and promptly temperature is controlled gentle pressure-controlled.The one, steel cylinder appearance heating-up temperature is controlled in the safety range all the time, guarantee to be heated the safety of cylinder for liquefied gas; The 2nd, make the evaporating capacity of liquid gas in the steel cylinder be controlled at certain limit, guarantee due air pressure in the steel cylinder, to guarantee pressurized container safety in use.So Safety performance is good especially.

The used heat generating material of heating blanket internal layer is the conductive polymer composite with positive temperature coefficient effect, this kind has the metal electric heating body temperature control high insulating effect of automatic control temperature characteristics, stable performance, decay resistance is superior, the natural temperature rise in surface is no more than 45 ℃, and the heating blanket skin is equipped with the antiseptic fire-retardation thermal insulation layer, between heating blanket and cylinder for liquefied gas temperature transducer is housed, heating blanket is connected with double controlled vaporization control cabinet by temperature transducer.

Description of drawings

Fig. 1 is the example structure schematic representation of the utility model on the liquefied chlorine gas steel cylinder;

Fig. 2 is the heating blanket schematic cross-section;

Fig. 3 is the control circuit schematic representation.

Among the figure: 1--control cabinet, 2--heating blanket; The 3A--thermal resistance sensor; the 3B--pressure transducer; the 4--liquid chlorine cylinder; 5--liquid chlorine cylinder fixed base; the 6--heating blanket; the connecting thread of sensor and control cabinet, 7--heating blanket outer surface waterproof; anticorrosion; the fire-resisting protection layer, 8--fire-retardant heat insulation layer; 9--anti-flaming thermal-insulation layer; 10--automatic temperature-control metal electric heating body, 11--solid-state relay, 12--Intelligent Double Channel controller; the 13--run indicator; 14--stops tutorial light, 15--lower limit alarm indicator lamp, 16--upper limit alarm tutorial light; 17--upper limit alarm device; the 18--power supply indicator, 19--air-break switch, the insurance of 20--heating blanket; the insurance of 21--control circuit; the insurance of 22--Intelligent Double Channel controller, 23--Intelligent Double Channel controller upper limit alarm output terminal, 24--Intelligent Double Channel controller lower limit warning output terminal; 25--moves relay output end, 26--slew relay output terminal.

Embodiment

Below in conjunction with accompanying drawing and the utility model is described in further detail:

In Fig. 1, heating blanket 2 covers on the liquid chlorine cylinder, by heating blanket outer surface mill yarn from sticky cloth and heating blanket internal surface mill yarn from sticky cloth sticking with, can be heating blanket 2 heating face fastenings at liquid chlorine cylinder 4 outer surfaces, line 6 by heating blanket, sensor and control cabinet has been connected to control cabinet 1 to thermal resistance sensor 3 and heating blanket 2, allows heating blanket 2 obtain power supply and controlled.

In Fig. 2, the fire-retardant heat insulation layer 8 of heating blanket 2 internal layers and anti-flaming thermal-insulation layer 9 can play automatic temperature-control metal electric heating body 10 directly the space outerpace transferring heat energy beyond liquid chlorine cylinder 4 and the effect of radiant heat energy of hindering respectively; Heating blanket outer surface waterproof, anticorrosion, fire-resisting protection layer 7 play protection heating blanket 2 internal materials, and have antifouling, anti-acid etching function, and can beautify heating blanket 2 outward appearances.

In Fig. 3, the control core adopts Intelligent Double Channel controller 12, and the Intelligent Double Channel controller has the PID regulatory function, guarantees that temperature control is accurate.Select for use solid-state relay 11 as heating blanket 2 control switch elements, contactless because solid-state relay 11 belongs to electronic switch, can adapt to high frequency switching circuit again, so can improve the life-span and the accuracy of temperature control of control cabinet 1; Intelligent Double Channel controller insurance 22, heating blanket insurance 20, control circuit insurance 21 can be circuit safety provides multiple guarantee.

In the time of need heating liquid chlorine cylinder 4, the air-break switch 19 that closes, power supply indicator 18 is bright, and the expression control cabinet gets electric, when Intelligent Double Channel controller 12 is not worked, slew relay output terminal 26 closures, it is bright to stop tutorial light 14; Can set the temperature control value and the upper and lower limit alarming value of hope by Intelligent Double Channel controller panel user; By armouring PT100 thermal resistance sensor 3, Intelligent Double Channel controller 12 can detect and show current liquid chlorine cylinder 4 temperature values.

Concrete control procedure is as follows:

1. when being lower than the user, liquid chlorine cylinder 4 temperature values set temperature control value or atmospheric pressure value in the user sets control range the time, Intelligent Double Channel controller upper limit alarm output terminal 23 outputs signal to solid-state relay 11, the solid-state relay conducting, heating blanket 2 must be established the beginning intensification by cable, give the liquid chlorine steel cylinder 4 heating, move relay output end 25 closures simultaneously, slew relay output terminal 26 disconnects, stop tutorial light 14 and go out, run indicator 13 is bright.

2. when liquid chlorine cylinder 4 temperature values reach the user and set the temperature control value, perhaps atmospheric pressure value has exceeded the user when setting control range, Intelligent Double Channel controller upper limit alarm output terminal 23 disconnects the signal of giving solid-state relay 11, and solid-state relay 11 ends, heating blanket 2 dead electricity, stop to 4 heating of liquid chlorine steel cylinder, liquid chlorine cylinder stops chlorination, moves relay output end 23 simultaneously and disconnects slew relay output terminal 26 closures, it is bright to stop tutorial light 14, and run indicator 13 is gone out.

Repeat 1. 2. to move that liquid chlorine cylinder temperature value and atmospheric pressure value are remained in the controlling value scope that the user sets, thereby both guaranteed that double controlled cylinder for liquefied gas safety vaporizer can provide enough heat energy to the steel cylinder chlorine of vaporizing, and had guaranteed to use chlorine safety again.

3. when liquid chlorine cylinder temperature value or atmospheric pressure value surpass user's capping alarming value, controller upper limit alarm output terminal 23 closures, upper limit alarm tutorial light 16 is bright, simultaneously upper limit alarm device 17 bell rings.

4. when liquid chlorine cylinder temperature value or atmospheric pressure value are lower than the user and set the lower limit alarming value, temperature controlling instrument lower limit warning output terminal 24 closures, lower limit alarm indicator lamp 15 is bright, plays the effect of reminding the user.

Show embodiment at Fig. 1, adopted high-precision intelligent Twin channel controller in the middle control cabinet 1 with PID regulatory function; Automatic temperature-control metal electric heating body 10 has ptc characteristics and (gets when electric at the metal electric heating body, along with its surface temperature continues to rise, the metal electric heating bulk resistance also continues to become big, electric current continues to diminish), and the nature temperature rise of automatic temperature-control metal electric heating surface is no more than 45 ℃, even if so 1 temperature control of double controlled cylinder for liquefied gas safety vaporizer electrical control cabinet was lost efficacy, heating blanket 2 can not surpass 45 ℃ to liquid chlorine cylinder 4 heating yet, provide dual safety limit temperature to ensure for 4 heating of liquid chlorine steel cylinder; Automatic temperature-control metal electric heating body 10 has the good insulation performance and (soaks in water after 5 hours in addition, still can test) by High-Voltage Insulation, and all adopt fire-retardant, thermal insulating material inside and outside the heating blanket 2, guarantee heating blanket 2 inside and outside fire safeties, improved the steel cylinder utilization efficiency of heat energy.

Claims

1. double controlled cylinder for liquefied gas safety vaporizer is characterized in that: described cylinder for liquefied gas safety vaporizer by cover the cylinder for liquefied gas surface, have the heating blanket of fabulous automatic control temperature characteristics and have preset, regulate, the Intelligent Double Channel direct digital controller of control, warning function forms; Be connected to thermal resistance sensor (3A) and pressure transducer (3B) on the signal input part of Intelligent Double Channel controller (12), its output control terminal links to each other with heating blanket (2) through solid-state relay (11).

2. double controlled cylinder for liquefied gas safety vaporizer as claimed in claim 1; it is characterized in that: described heating blanket (2) is made up of waterproof, anticorrosion, fire-resisting protection layer (7), fire-retardant heat insulation layer (8), anti-flaming thermal-insulation layer (9) and automatic temperature-control metal electric heating body (10); the top layer is water, anticorrosion, fire-resisting protection layer (7), sets gradually thermal insulation layer (8), anti-flaming thermal-insulation layer (9) and automatic temperature-control metal electric heating body (10) in it.

3. double controlled cylinder for liquefied gas safety vaporizer as claimed in claim 2 is characterized in that: automatic temperature-control metal electric heating body (10) is a kind of electrothermal body with positive temperature coefficient that is made of the macromolecule composite conductor, and the natural temperature rise in heating blanket surface is set and is lower than 45 ℃

4. double controlled cylinder for liquefied gas safety vaporizer as claimed in claim 1 is characterized in that: thermal resistance sensor (3A) is located in the heating blanket (2), and pressure transducer (3B) is located on the cylinder for liquefied gas mouth.