JPH04402Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention connects to the take-out pipe of a cylinder of carbon dioxide, ethylene, or other liquefied gas, and adjusts the extremely low-temperature, high-pressure gas immediately after vaporization to the required gas pressure before sending it out. This invention relates to a heat exchange device in a gas pressure regulator.

``Prior art'' High-pressure gas immediately after being taken out of a liquefied gas cylinder is extremely cold, so when it passes through the gas pressure regulator connected to the take-out pipe of the liquefied gas cylinder,
There is a risk that the pressure reducing mechanism of the gas pressure regulator may freeze, which may interfere with pressure regulation.For this reason, conventional gas pressure regulators have generally incorporated an electric heating device around the pressure reducing mechanism to prevent freezing. be.

However, in the above-mentioned system, the structure becomes complicated and the cost increases due to the large size, so recently, as shown in FIG. A large number of fins 22 are formed on the circumferential surface in the circumferential direction to perform heat exchange and warm the cold high-pressure gas immediately after it is introduced into the primary chamber 21, thereby increasing the pressure without causing a freezing phenomenon without using an electric heating device. Devices that allow adjustment have come into use.

"Problems to be Solved by the Invention" In the conventional heat exchange structure using fins, as shown in FIG. There is almost no phenomenon in which the air flows between the fins 22, and since the fins 22 are relatively short, when the temperature of the fins 22 is below 0°C, moisture in the atmosphere turns into ice and frost, and the fins 22 are relatively short. If the ice and frost are not removed frequently, the ultra-low temperature introduced into the primary chamber 21 of the main frame 20 will accumulate on the entire surface and clog between the fins 22, reducing the heat exchange ability. This causes an inconvenient situation in which the gas cannot be heated and the decompression mechanism 24 to the secondary chamber 23 freezes.

The present invention was devised in order to eliminate the drawbacks of the heat exchange device in the conventional gas pressure regulator as described above. Please limit it to the section only.
Cooled air flows smoothly between the fins,
Warm air constantly flows between the fins from above and is supplied, continuously heating the fins and removing the ultra-low-temperature high-pressure gas in the primary chamber of the main frame without the need for the time-consuming task of removing ice and frost. The object of the present invention is to provide a heat exchange device that can appropriately heat the heat exchanger.

"Means for Solving the Problems" The present invention takes the following means to achieve the above object.

Axial direction (vertical direction) on the outer peripheral surface of the main frame that has a primary chamber that communicates with the cylinder joint pipe of the gas pressure regulator.
A large number of wide and long fin strips are formed radially.

At the connection point between the main frame having a large number of radial fin strips formed on its outer circumferential surface and the valve frame having a pressure reduction mechanism and a secondary chamber inside and equipped with an adjustment handle for the pressure reduction mechanism, etc. A ventilation space communicating with the upper end of the space between the plurality of fin strips is formed, and the lower end of the space between the plurality of fin strips is open.

"Operation" As mentioned above, the present invention forms a number of wide and long fin strips radially in the axial direction on the outer peripheral surface of the main frame, which has a primary chamber through which the cold gas immediately taken out from the liquefied gas cylinder passes. Since a ventilation space communicating with the upper end of the space between the fin strips is provided and the lower end between the fin strips is open, the outer periphery of the primary chamber is When the temperature of the radial fin strips on the surface drops below the atmospheric temperature, the air that has entered the space between the fin strips cools down and flows downward, leaving the upper end of the space between the fin strips at a high temperature from the ventilation space. The air passes through the space between the fin strips, and the high-temperature outside air flows continuously from the upper end to the lower end, exchanging heat with the fin strips, warming the fin strips, and passing through the fin strips. Warms the cold gas in the primary room.

"Example" Next, an example of implementation of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, a large number of wide and long fin strips 3 are formed radially in the axial direction (vertical direction) on the outer peripheral surface of the main frame body 2 having the primary chamber 1. Further, a plurality of small protruding fins 4 in the axial direction are provided in the middle of the inner peripheral surface of the primary chamber 1.

The upper part of the main frame 2 is provided with an adjustment handle 10, etc., which can be repeatedly applied to a diaphragm 9 provided with a valve shaft 8 for operating the secondary chamber 5, the pressure reduction mechanism section 6, and the adjustment valve 7 of the pressure reduction mechanism section 6. A valve frame body 11 is connected and fixed, and at the connection portion between the valve frame body 11 and the main frame body 2, a number of fin strips 3 formed radially on the outer peripheral surface of the main frame body 2 are arranged between each other. A ventilation space 13 communicating with the upper end of the space 12 is formed, and the lower end of the space 12 between the fin strips 3 is open.

Furthermore, a cylinder joint pipe 1 is connected to the valve frame body 11.
The upper end of a guide pipe 16 whose lower end is located near the bottom of the primary chamber 1 of the main frame 2 is connected to the air guide hole 15 of the main frame 2, and a liquefied gas cylinder (not shown)
The cold high-pressure gas immediately after vaporization is discharged into the primary chamber 1 from near the bottom of the primary chamber 1 through a guide pipe 16 connected to an air guide hole 15 of the cylinder joint pipe 14.

In addition, the reference numeral 17 in the drawing indicates the secondary chamber 5 of the valve frame body 11.
This is the outlet pipe section for the regulated gas that communicates with the regulated gas.

In the present invention, as described above, ultra-low-temperature high-pressure gas from a liquefied gas cylinder (not shown) is transferred to the cylinder joint pipe 14.
A large number of wide and long fin strips 3 are formed radially in the axial direction on the outer peripheral surface of the main frame body 2 having the primary chamber 1 introduced through the main frame body 2.
A space 12 between the plurality of radially formed fin plates 3 is provided at the connection part with the valve frame body 11 which is connected and fixed to the upper part of the valve frame body 11, which is equipped with a secondary chamber 5, a pressure reducing mechanism part 6, etc.
Since a ventilation space 13 communicating with the upper end is formed and the lower end of the space 12 between the fin strips 3 is open, the fin strips 3 are prevented by the cold gas introduced into the primary chamber 1. When cooled, the air in the space 12 between the radial fin strips 3 drops below the atmospheric temperature and becomes colder, flowing down and exiting from the lower ends of the fin strips 3 to the outside. Warm air continuously flows in from the upper end of the space 12 and performs a heat exchange action with the fin strip plate 3 to constantly warm the fin strip plate 3, and a large number of fin strip plates 3 are heated by the heat exchange action. The ultra-low temperature gas introduced into the main frame 1 through the heating is heated.

In addition, if a plurality of small protruding fins 4 are formed in the middle of the inner surface of the primary chamber 1 as shown in the embodiment of the present invention, the contact area with the cold gas introduced into the primary chamber 1 will be expanded and further improved. The heat exchange effect can be promoted, and the air guide hole 1 of the cylinder joint pipe 14 can be
5 is connected to the guide pipe 16 to release the cold gas immediately after vaporization near the bottom of the primary chamber 1, the cold gas is released as far away from the position of the decompression mechanism 6 as possible. While reaching the decompression mechanism part 6 connected to the upper part of the primary chamber 1, it can be heated better and communicated with the decompression mechanism part 6.

"Effects of the Invention" As described above, the present invention provides ventilation from the upper end of the space 12 between the fin strips 3 at the connection between the main frame body 2 and the valve frame body 11 when the gas pressure regulator is in use. Warm air constantly flows in through the space 13,
Since the fin strips 4 flow down while contacting the opposing faces of each other and continue to heat the fin strips 3, moisture in the air forms frost on the tip edges of the fin strips where air tends to stay. Even if some adhesion occurs, no frost-like phenomenon occurs on the mutually facing surfaces of the fin strips 3, where warm air is constantly in contact and flowing down and continues to be heated by heat exchange. Therefore, the heat exchange function can be smoothly performed without the need for frequent removal of the troublesome ice and frost or the inability to perform the heat exchange function due to clogging of ice and frost between the fins, which is the case with conventional systems. The ultra-low temperature gas in the primary chamber can be continuously heated appropriately, and the gas pressure can be adjusted smoothly over a long period of use by reliably preventing freezing phenomenon in the decompression mechanism of the gas pressure regulator. It can be made to work.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a side view with a part cut away, and FIG.
FIG. 3 is a partially cutaway side view showing the structure of a conventional device. 1...Primary chamber, 2...Main frame, 3...Fin plate, 11...Valve frame, 12...Space, 13...Ventilation space.

Claims (1)

[Scope of utility model registration request] A large number of wide and long fin strips are formed radially in the axial direction on the outer peripheral surface of the main frame body having the primary chamber, and at the connection part with the valve frame body connected and fixed to the upper part of the main frame body. A heat exchange device in a gas pressure regulator, wherein a ventilation space is formed in the upper end of the space between the plurality of radially formed fin plates, which communicate with each other.