CN2656785Y

CN2656785Y - Dry-type liquified gas cylinder safety evaporation device

Info

Publication number: CN2656785Y
Application number: CN 03238268
Authority: CN
Inventors: 叶金; 何宇波
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-17
Filing date: 2003-09-17
Publication date: 2004-11-17
Anticipated expiration: 2013-09-17

Abstract

A safe evaporation device of a dry liquefied gas steel cylinder is characterized in that the external surface of the liquefied gas steel cylinder is covered with an evaporation blanket, and that the internal layer of the evaporation blanket is provided with a self-regulating metal heating electrolemma and the extenal layer of the evaporation blanket is provided with a flame retardant insulating layer, and that the lead wire of the evaporation blanket is connected with the output control terminal of a temperature controller, and that a temperature sensor is arranged between the evaporation blanket and the liquefied gas steel cylinder and the lead wire of the temperature sensor is connected with the input control terminal of the temperature controller, and that the temperature rising of the evaporation blanket is controlled by the temperature controller. The evaporation blanket can heat the steel cylinder directly and the surface temperature rising of the evaporation blanket is not more than fifty degrees centigrades, which can ensure the safety and the surface dryness of the steel cylinder and the anticorrosion of the steel cylinder. As the surface temperature value of the steel cylinder can be set and the calorific value of the evaporation blanket can be adjusted through the temperature controller, the liquefied gas can be fully evaporated and so the evaporating value of the liquefied gas can be adjusted safely according to the needs of people.

Description

A kind of dry type cylinder for liquefied gas safety evaporating plant

Affiliated technical field

But the utility model relates to a kind of safe temperature adjustment, when being used for liquid gas and flashing to gas, give the heating of steel cylinder outer surface safety, make liquid gas fully flash to gas, and play the device of regulating steam output, especially the utility model does not need water to do heat medium, and the evaporation blanket directly overlays the heating of steel cylinder surface steel cylinder, i.e. dry type, and the steel cylinder outer surface can be above 50 ℃, promptly guarantee to be heated the safety of steel cylinder, and can reach regulator solution oxidizing gases steam output by setting steel cylinder surface temperature value.

Background technique

As everyone knows, liquid gas flashes to gas need absorb heat from surrounding environment, and heat what liquid gas absorbs, and then determined liquid gas to flash to the amount of gas; When liquid gas absorbs shortage of heat, to make the boil-off gas scale of construction of liquid gas not reach people's demand, also the gas that can occur being evaporated contains liquid gas, when liquid gas is when having the gas of severe corrosive, gas, liquid mixed gas then can cause damage to follow-up gas equipment, this makes people by every means to the steel cylinder heating, to reach the requirement that people use liquid gas.

The cylinder for liquefied gas heating means have at present: the steel cylinder outlet pipe is heated, water drenches the heating of steel cylinder surface, or with the heating of infrared lamp irradiation steel cylinder surface, there is following shortcoming in these methods: can not regulate the vaporized gas amount according to people's demand, steel cylinder is had corrosion, and steel cylinder has the danger of overtemperature bottle explosion.

Summary of the invention:

For overcoming the shortcoming of the mode that has the cylinder for liquefied gas heating now, the utility model provides a kind of dry type cylinder for liquefied gas safety evaporating plant, and this device does not need water to drench, and directly to the steel cylinder heating, can guarantee the steel cylinder dry tack free, avoids steel cylinder to be corroded; This device evaporation blanket has auto-temperature-limiting character, and evaporation blanket surface temperature rise can not surpass 50 ℃, overheating problem can not occur heating, can guarantee steel cylinder safety; This device has the closed loop temperature control system, can be according to the boil-off gas scale of construction of user's needs, and by setting steel cylinder surface temperature value, the heating value of regulating the evaporation blanket offers the required additional heat of the boil-off gas scale of construction.

Technological scheme:

A kind of dry type cylinder for liquefied gas safety evaporating plant is coated with the evaporation blanket at liquefaction steel cylinder outer surface, and evaporation blanket temperature rise temperature is controlled by temp controller.

Evaporation blanket internal layer has from limitting warm metal fever electrolemma, limits warm metal fever electrolemma to have ptc characteristics certainly, and the natural temperature rise in surface of metal fever electrolemma is no more than 50 ℃; Skin has the fire-retardant heat insulation layer; Between evaporation blanket and cylinder for liquefied gas temperature transducer is arranged, evaporation blanket lead-in wire is connected the temp controller output control terminal, and temperature sensor wires is connected temp controller input control end.

Below in conjunction with drawings and Examples the utility model is further specified.

Description of drawings:

Fig. 1 is that the utility model is implemented in liquid chlorine cylinder evaporating system figure (schematic representation).

Fig. 2 is an evaporation blanket sectional view (schematic representation).

Fig. 3 is an evaporation blanket planimetric map (schematic representation).

Fig. 4 is " dry type cylinder for liquefied gas safety evaporating plant " electrical control figure (schematic representation).

In Fig. 1-4: 1 liquid chlorine cylinder protection rubber strip; 2 are used in liquid chlorine cylinder embodiment's evaporation blanket; 3 " dry type cylinder for liquefied gas safety evaporating plant " electrical control cabinet; 4 liquid chlorine cylinders; 5 liquid chlorine cylinder fixed bases; 6 armouring PT100 thermal resistance sensors; 7 evaporation blanket outer surface mill yarns are from sticky cloth; 8 evaporation blanket internal surface mill yarns are from sticky cloth; 9 evaporation blanket waterproof; fire-retardant; acidproof outer surface cloth; 10 from limitting warm metal fever electrolemma; 11 anti-flaming thermal-insulation aluminium films, 12 fire-retardant heat insulation layers, 13 evaporation blankets; the line of sensor and temperature-controlling cabinet; 14 temperature controlling instrument lower limit warning output terminals; 15 power supply indicators, 16 upper limit alarm electric bells, 17 upper limit alarm tutorial light; 18 lower limit alarm indicator lamps; 19 stop tutorial light, 20 run indicator, 21 temperature controlling instrument SSR output control terminals; 22 slew relay output terminals; 23 operation relay output ends, 24 evaporation blanket insurances, 25 solid-state relays; 26 air-break switches; the insurance of 27 control circuits, 28 Fuji's temperature controlling instruments, the insurance of 29 temperature controlling instruments; 30 temperature controlling instrument upper limit alarm output terminals, 31 thermal resistance sensor covers.

Embodiment:

In Fig. 1, evaporation blanket (2) covers between the liquid chlorine cylinder protection rubber strip (1), by evaporation blanket outer surface mill yarn from sticky cloth (7) and evaporation blanket internal surface mill yarn from sticky cloth (8) sticking and, can be the fastening of evaporation blanket (2) heating face at liquid chlorine cylinder (4) outer surface; Line (13) by evaporation blanket, sensor and temperature-controlling cabinet has been connected to " dry type cylinder for liquefied gas safety evaporating plant " electrical control cabinet (3) to thermal resistance sensor (6) and evaporation blanket (2), allows evaporation blanket (2) obtain power supply and controlled.

In Fig. 2, fire-retardant heat insulation layer (12) and the anti-flaming thermal-insulation aluminium film (11) of evaporation blanket (2) internal layer, can play respectively hinder oneself limit warm metal fever electrolemma (10) directly to liquid chlorine cylinder (4) in addition the space outerpace transferring heat energy and the effect of radiant heat energy; Evaporation blanket waterproof, fire-retardant, acidproof outer surface cloth (9) play protection evaporation blanket (2) internal material, antifouling, anti-acid etching function, again can evaporation blanket attractive in appearance (2) outward appearance.

In Fig. 3, because thermal resistance sensor (6) is fixed in the inboard thermal resistance sensor cover (31) of evaporation blanket water proof fire retardant outer surface cloth (9), make thermal resistance sensor (6) and limit warm metal fever electrolemma (10) to be close together certainly, and with liquid chlorine cylinder (4) alternating floor evaporation blanket water proof fire retardant outer surface cloth (9) only, so thermal resistance sensor (6) can the most accurate reflection liquid chlorine cylinder (4) hull-skin temperature value, help improving the degree of accuracy of the control of package unit; Evaporation blanket outer surface mill yarn from sticky cloth (7) and evaporation blanket internal surface mill yarn from sticky cloth (8) can repeat repeatedly sticking and, conveniently changing liquid chlorine cylinder (4).

In Fig. 4, temperature controlling instrument adopts Fuji's temperature controlling instrument (28), and Fuji's temperature controlling instrument (28) has the PID regulatory function, guarantees that temperature control is accurate; Select for use solid-state relay (25) as evaporation blanket (2) control switch element, because solid-state relay (25) belongs to electronic switch, contactless, can adapt to high frequency switching circuit again, so can improve the life-span and the accuracy of temperature control of " dry type cylinder for liquefied gas safety evaporating plant " electrical control cabinet (3); Temperature controlling instrument insurance (29), evaporation blanket insurance (24), control circuit insurance (27) can be circuit safety provides multiple guarantee.

In the time of need heating liquid chlorine cylinder (4), the air-break switch that closes (26), power supply indicator (15) is bright, and the expression control cabinet gets electric, and Fuji's temperature controlling instrument (28) is not when working, slew relay output terminal (22) closure, it is bright to stop tutorial light (19); Can set the temperature control value and the upper and lower limit alarming value of hope by temperature controlling instrument panel user; By armouring PT100 thermal resistance sensor (6), Fuji's temperature controlling instrument (28) can detect and show current liquid chlorine cylinder (4) temperature value.

1. when liquid chlorine cylinder (4) temperature value is lower than the user and sets the temperature control value, temperature controlling instrument SSR output control terminal (21) outputs signal to solid-state relay (25), solid-state relay (25) conducting, evaporation blanket (2) must be established the beginning intensification by cable, give liquid chlorine steel cylinder (4) heating, move relay output end (23) closure simultaneously, slew relay output terminal (22) disconnects, stop tutorial light (19) and go out, run indicator (20) is bright.

2. when liquid chlorine cylinder (4) temperature value reaches the user and sets the temperature control value, temperature controlling instrument SSR output control terminal (21) disconnects the signal of giving solid-state relay (25), solid-state relay (25) ends, evaporation blanket (2) dead electricity, stop to move relay output end (23) simultaneously and disconnecting slew relay output terminal (22) closure to liquid chlorine steel cylinder (4) heating, it is bright to stop tutorial light (19), and run indicator (20) is gone out.

Repeat 1. 2. to move to make liquid chlorine cylinder (4) temperature value maintain the temperature control value that the user sets, thereby guarantee that " dry type cylinder for liquefied gas safety evaporating plant " can provide enough heat energy when steel cylinder evaporates chlorine.

3. when liquid chlorine cylinder (4) temperature value surpasses user's capping alarming value, temperature controlling instrument upper limit alarm output terminal (30) closure, upper limit alarm tutorial light (17) is bright, and upper limit alarm electric bell (16) rings simultaneously.

4. when liquid chlorine cylinder (4) temperature value is lower than the user and sets the lower limit alarming value, temperature controlling instrument lower limit warning output terminal (14) closure, lower limit alarm indicator lamp (18) is bright, plays the effect that fault is reminded the user.

In the present embodiment, " dry type cylinder for liquefied gas safety evaporating plant " electrical control cabinet has adopted the high accuracy temperature controller with PID regulatory function in (3); Have again from limitting warm metal fever electrolemma (10) to have ptc characteristics and (get when electric at the metal fever electrolemma, along with its surface temperature continues to rise, the metal thermoelectric film resistance also continues to become big, electric current continues to diminish), and the natural temperature rise in surface of metal fever electrolemma is no more than 50 ℃, so " even if dry type cylinder for liquefied gas safety evaporating plant " electrical control cabinet (3) temperature control was lost efficacy, evaporation blanket (2) can not surpass 50 ℃ to liquid chlorine cylinder (4) heating yet, provides dual safety limit temperature to ensure for liquid chlorine steel cylinder (4) heating; In addition from limitting warm metal fever electrolemma (10) to have the good insulation performance (after in water, soaking 5 hours, still can test) by High-Voltage Insulation, and all adopt fire-retardant, thermal insulating material inside and outside the evaporation blanket (2), guarantee the inside and outside fire safety of evaporation blanket (2), improved the steel cylinder utilization efficiency of heat energy.

The beneficial effects of the utility model are: can guarantee the steel cylinder dry tack free directly to the steel cylinder heating, keep away Exempting from steel cylinder is corroded; Evaporation blanket surface temperature rise can not surpass 50 ℃, can guarantee the safety of steel cylinder heating; Logical Cross setting steel cylinder surface temperature value, regulate the caloric value of evaporation blanket, it is required additional to offer the boil-off gas scale of construction Heat makes liquid gas obtain abundant vaporization, and can be according to the safe regulator solution oxidizing gases of user's request The boil-off gas scale of construction.

Claims

1. dry type cylinder for liquefied gas safety evaporating plant, there are the evaporation blanket (2), electrical control cabinet (3), the temperature transducer (6) that cover liquefaction steel cylinder outer surface to constitute, it is characterized in that: evaporation blanket internal layer has from limitting warm metal fever electrolemma (10), skin that anti-flaming thermal-insulation aluminium film (11), fire-retardant heat insulation layer (12) are arranged.

2. evaporation blanket according to claim 1 (2) is characterized in that: the surface material distribution of evaporation blanket (2) is sewed with the mill yarn from sticky cloth (7).