JPH0622734U - Liquefied LP gas heat exchanger - Google Patents

Abstract

(57) [Summary] [Object] The present invention enables a device for heating and liquefying liquefied LP gas by a heat exchange device to be miniaturized by passing hot water arrangement communicating with a circulation boiler through a manifold. The purpose is to develop a heat exchange device for liquefied LP gas. [Structure] Heat exchange is performed through a hot water pipe communicating with a heating circulation boiler to each of the manifolds for transferring liquefied LP gas from one to several cylinders installed in each of the two cylinder groups, and the manifold is used to perform heat exchange. 1. A heat exchange device for liquefied LP gas, comprising the first and second vaporizers to vaporize LP gas and further adjust the pressure to a working pressure by a pressure regulating valve.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention gasifies the liquefied LP gas, further regulates the liquefied LP gas to a working pressure by a pressure regulating valve and discharges it, and transfers the liquefied LP gas from each group of two cylinder groups by the gas pressure. A compact heat exchange device is provided, in which hot water pipes communicating with a heating circulation boiler are provided in the manifold, and a manifold that is normally provided for each liquefied LP gas cylinder group is used as a device for heat exchange. A gas-heated hot water boiler is installed in the plant to circulate hot water, which helps reduce the number of dangerous areas where there are legal restrictions such as strict prohibition of fire, and replaces the economically disadvantageous automatic switching valve for liquids with an automatic switching valve for gas. It has an extremely advantageous application field such as the use of

[0002]

[Prior art]

As shown in FIG. 2, the conventional vaporizer for liquefied LP gas adds liquefied LP gas from one to several cylinders g and h installed in each of two cylinder groups e and f by a conduit l. Since the water is guided to the greenhouse c surrounded by the water tank b of the heating device a, no flame is generated for heating the aquarium water w of the heating device a installed in the building X- ₁ in the dangerous zone X. Not only is the explosion-proof electric heater (with thermostat) d with no spark discharge used, the manifolds i and j of each group are not used at the same time, and one of the manifolds, for example i, is an automatic switching valve for liquid. It is introduced into the heating chamber c through the k and the common conduit l, and when the manifold i on one side is sensed to have a predetermined pressure or less, an automatic switching operation is performed to switch to the other manifold j. Is the above heating device a , Two sets of cylinder group e installing the cylinder g, h of each several 1, and f, manifold i, and j, disaster building X was installed for liquid automatic switching valve k such - on ₁ is required , The area where the flammable substances are prohibited to be brought in and the area where flames are prohibited to be used must be within 5 meters from the above building in accordance with the hazardous area law.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to solve the development of a heat exchange device for liquefied LP gas that can reduce the dangerous area X including the above-mentioned prohibited area, while having the same scale.

[0004]

[Means for Solving the Problems]

 The liquefied LP gas heat exchange device of the present invention is a hot water pipe communicating with a heating circulation boiler in each of the manifolds for transferring liquefied LP gas from one to several cylinders installed in each group of two sets of cylinders. A heat exchanger for liquefied LP gas, characterized in that the manifolds form first and second vaporizers to release LP gas, and the pressure is adjusted to a working pressure by a pressure regulating valve. It is a fundamental modification of the conventional device.

[0005]

[Action]

 The present invention uses from one to several cylinders installed in each of two well-known cylinder groups. A manifold for transferring liquefied LP gas for consumption is used as a heat exchange device, and first and second vaporizers are provided. In combination with the above equipment, the heat exchange device is formed through a hot water pipe that communicates with the heating circulation boiler. In addition, the heating of the aquarium water of the heating device is not limited to the use of explosion-proof electric heaters that do not generate flames and spark discharges, and each manifold can be located anywhere outside the hazardous area. Since the hot water pipe that communicates with the installed heating and circulation boiler can be passed through, a heat exchange device that is small in size and extremely simple can be configured.

[0006]

【Example】

 FIG. 1 is a vertical sectional front view illustrating an embodiment of the present invention.

Unlike the conventional one, 1 is a heating circulation boiler installed in an arbitrary area Y other than the dangerous area X, and the aquarium burner 2 heats the aquarium water w to a constant temperature of about 60 °. A water tank 3 is provided, and a pump P is used to send circulation of warm water to a warm water pipe 19 to be described later for reflux.

Reference numerals 11 and 12 denote two groups of cylinders provided inside the building X- _{1 in} the dangerous area X. Each group 11 and 12 has one to several liquefied LP gas cylinders 13 and 14, respectively. Although one of the cylinders 13 and 14 is replaced with a new one when the liquefied LP gas is consumed, the cylinders 13 and 14 can be used at the same time. Each of the cylinders 13 and 14 has two sets of manifold plugs of the manifolds 15 and 16 which are separately fitted to the cylinder openings. A first vaporizer 17 and a second vaporizer 18 having a heat exchange device are formed in each of the manifolds 15 and 16 through a hot water pipe 19 communicating with the heating circulation boiler 1. The first vaporizer 17 and the second vaporizer 18 discharge the LP gas vaporized by the heat exchange device to the switching pipe 20 or 21.

Reference numeral 23 denotes an automatic gas switching valve having two inlets connected to the switching pipe 20 or 21 and an outlet connected to a switching gas pipe 24, which belongs to, for example, the second vaporizer 18. When the liquefied gas in the cylinder 14 is consumed and the pressure in the switching pipe 21 drops, the communication with the switching pipe 20 in the first vaporizer 17 is automatically switched to when the pressure in the switching pipe 20 falls below the working pressure. It senses and performs a known switching action of automatically switching to communication of the switching pipe 21 of the second vaporizer 18 replaced with the new cylinder 14. A pressure regulating valve 25 for adjusting the working gas pressure is inserted in the discharge gas pipe 24 at the outlet of the automatic gas switching valve 23, and a working gas pipe 26 is connected to the outlet of the pressure regulating valve 25. The used gas pipe 26 has its end laid at the place of use, and is also connected to the burner of the heating circulation boiler 1 to be used as heating fuel for the boiler.

[0010]

[Effect of device]

 The liquefied LP gas heat exchange device of the present invention includes manifolds 15 and 16 for transferring liquefied LP gas from one to several cylinders 13 and 14 installed in each of two cylinder groups 11 and 12, respectively. The first and second vaporizers 17 and 18 are configured by the manifolds 15 and 16, and the heat exchange mechanism is built in each of the manifolds 15 and 16 together with the hot water pipe 19 communicating with the heating circulation boiler 1. Therefore, unlike the conventional vaporizer that consists of the heating device shown in Fig. 2, the space to be installed in the hazardous area can be reduced, which is extremely advantageous for effective use of land. Further, since the manifolds 15 and 16 constituting each vaporizer always have a heat exchange function, it is possible to use an automatic gas switching valve which is simpler in structure and cheaper than the conventional liquid automatic switching valve. Further, in the present invention, the supply gas may be used as the heating heat source of the hot water boiler without using the conventional electric heater, so that there is an effect that fuel consumption can be reduced as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view illustrating an embodiment of the present invention.

FIG. 2 is a vertical sectional front view of a conventional vaporizer for liquefied LP gas.

[Explanation of symbols]

X Hazardous area, X- ₁ building, Y Any area,
w Aquarium water, 1 heating circulation boiler, 2 Yufu burner, 3 aquarium, 11, 12 cylinder group, 13, 14
Cylinder, 15, 16 manifold, 17 first vaporizer main body, 18 second vaporizer main body, 19 hot water pipe, 20, 21 switching pipe, 23
Gas automatic switching valve, 24 switching gas pipe, 25
Pressure regulating valve, 26 consumption gas pipe,

Claims (1)

[Scope of utility model registration request] 1. One to each installed in each group of two sets of cylinders.
Heat is exchanged through a hot water pipe communicating with a heating circulation boiler to each of the manifolds for transferring the liquefied LP gas from several cylinders, and the manifold forms first and second vaporizers to vaporize the LP gas, and Liquefied LP characterized by adjusting the working pressure by a pressure regulating valve
Gas heat exchanger.