JPS63200000A - Gas forwarding assembly - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to gas distribution. This particularly relates to gas delivery assemblies having juxtaposed cylinder receivers.

The distribution of cryogenic liquids, particularly liquefied gases, is accomplished by tank trucks containing large volume storage vessels or "evaporators" for the user. However, this procedure is not well suited for small evaporators that require a pumping device. For this reason, "LGc" (liquid gas cylinder) technology has been proposed as an alternative to these small evaporators.

An LGC is a small, portable evaporator, generally having a cylindrical shape, with an atmospheric pressure evaporator heater.

Its useful capacity is limited to /6 S liters, and when filled 11 is between JOO kilograms and 350 kilograms, depending on the welfare of the gases it accommodates. Owing to its relatively small dimensions, it can be handled by hand and easily integrated into the usual distribution circuit of compressed air cylinders, so that it can be used similarly to cylinders filled from can be exchanged.

However, this LGC has significant drawbacks. i.e. to the user. Since its capacity is small, when most of the LGC is used, the evaporation of the liquid due to the addition of heat is large.
If this event were to occur on a Friday afternoon, the opening of the pressure limiting valve would result in significant gas loss over the weekend.

against the distributor. The LGC is too small to store liquid residue that cannot be removed. Therefore, it must be cooled again before each filling t'L.Roughly speaking, between the IIGC and its receiver, there is a gap of 9, so that it receives the LGc, i.e. the distribution of the cylinder in the basket. It is difficult to integrate it with the circuit, and LG
It is difficult to hold O in place, so L
There is a risk that the GO will be damaged.

The purpose of this invention is to enable integrated delivery of cryogenic liquids, limit gas losses in the user, and eliminate cylinder re-cooling problems or fragility due to shock.
An object of the present invention is to provide a gas delivery assembly that eliminates the

Therefore, in the gas delivery assembly of the type with juxtaposable cylinder receivers according to the invention, said assembly further comprises at least one cryogenic liquid storage and delivery device, said device comprising a double case. a container and a parallelepiped frame, the container being maintained in position within the frame, the frame completely surrounding the container and comprising handling means, the frame being shown in plan view. , having dimensions substantially equal to the dimensions of two or many juxtaposed cylinder receptacles.

Preferably, the container includes an atmospheric pressure evaporator heater disposed within the frame and includes utility accessories such as a filling passageway with a valve, a safety check device and a rapid pressurization circuit. However, all of these accessories are placed within the frame.

An embodiment of the invention will be described below with reference to the drawings.

The apparatus illustrated in FIGS. 7 and 1 is suitable for storing cryogenic liquids, especially air gases (oxygen, nitrogen, argon) in liquefied state. This generally consists of an outer frame and a container 3, which has a double case and is equipped with various accessories for its operation. Container 3 and its accessories are:
They are completely enclosed within an outer frame that protects them in all directions.

The outer frame generally has the shape of a parallelepiped and is composed of metal beams fixed to each other. In this outer frame,
A platform with horizontal openings 5 for passing the forks 7fr of the lift truck, vertical columns 6 at each corner, an upper transverse member in the center of which a lifting ring 8 is fixed, and serves to strengthen the assembly. There is also an intermediate cross member which protects the container 3 and its accessories.

Container 3 is a conventional container with double casing for cryogenic liquids. This is done by the positioning base io,
It is held firmly in that position within the outer frame. This positioning base 10 is tightened by suitable means (without rotation) consisting of, for example, a strap and a tightening member,
It is constructed integrally with the stand.

The container is tacked with various accessories necessary for its operation as an evaporator, i.e., as a device capable of supplying the product contained therein in a gaseous state. These accessories, which are only partially illustrated for the sake of clarity, include:
There are mainly the following:

A charging pipe connected to the neck 13 of the container and provided with a valve.
Ko. This tube lies in the plane of FIG.

A rapid pressurization device consisting of an auxiliary atmospheric pressure evaporator helical tube 16 distributed around the safety inspection unit ISO base IO, in particular a pressure gauge, a rupture disk and a pressure limiting valve. The upstream end communicates with the bottom of the container, and the lower R end communicates with a pipe K (see FIG. 2), which is equipped with a pressure regulator 78 and leads to the neck 13.

Cervical/3? A take-out passage 19 through which the main atmospheric pressure evaporator is a heating/container 0° is connected to the passage 19 on the downstream side, and a utilization pipe (not shown) can be connected on the upstream side. It is connected to the end member-7.

In a plan view, the outer frame 2 has a right quadrangular shape.

In the illustrated 97 embodiments, the two sides of the right quadrilateral are slightly different. The evaporator comprises q vertical tubes having longitudinal fins 23, in which at each adjacent corner of the inner frame there is a pair of tubes connected to each other at their lower ends.

The top of one of these tubes is connected to the passage 19, the top of the tube associated with this tube is connected to the top of the seventh tube of the other pair, and the last tube has its upper end connected to the end member Connected to 2/.

All of the elements housed within the outer frame 2 are protected by suitable means (
(not shown) is appropriately fixed to this outer frame.

As can be seen in FIG. 3, the device I is suitable for integration into a mixed delivery system for gases in gaseous and liquid states, which delivery system is comprised of cylinder receivers and cogs that are all identical. It also includes the group of

In particular, the dimensions in the plan view are exact multiples of the dimensions of the cylinder receiver. In the embodiment described, each cylinder receptacle is a parallelepiped and is suitable for accommodating 231 &-8 cylinders of pressurized gas. The bottom surface of the cylinder receiver has a length ja and a width, and the bottom surface of the outer frame has a smaller dimension a and a larger dimension 2b"f.

Therefore, the overall dimensions of the outer frame are exactly equal to the overall dimensions of the λ dished cylinder receivers. According to this,
The loading platform of delivery truck 2 is equipped with a cylinder receiver and equipment:
/ (number 3 in the illustrated case), the spaces can be filled without loss of a single space and without problems of position fixation.

Furthermore, by using a rigid outer frame, equipped with handling means 5 and 8, which allow the outer frame to be handled by a machine adopted for one cylinder receptacle, the container 3 can be made even larger, e.g. capacity. This large volume makes it possible, on the one hand, to reduce the loss of gas associated with the opening of the pressure limiting valve, and on the other hand, to the extent that, for example, 5% of the volume of the container cannot be recovered from the liver or S. A liquid residue can be provided and thus a "cold" filling can be achieved. In order to ensure this residue, corresponding to a predetermined charging level N, the suction pipe 3A for removing the liquid is lowered through the neck 13 only at the level N''&, and the helical quick pressurization pipe Pipe 3B connected to 16
is extended upwardly in the container 3 with a ufil''! slightly above the level N.

Therefore, the device l allows the cylinder receiver to change from empty to filled in the same way as cylinders housed in cogs.
Replacement can be completely achieved.

To give a numerical example, a container 3 of 4450') liters is held with its accessories in an outer frame having dimensions a and b in the vicinity of 1 meter and a height of the order of cm; By this, when it is full, /,00
An armpit storage device with an amount of (of the order of 0 kg) was provided. The 2.5 liter non-removable hold-down allowed the container to remain cold for approximately 0 hours after removal was completed.

Another advantage of the device'l compared to the LGO is that all accessories are enclosed by the outer frame, so that they can be easily manufactured to low wire. To put it in more detail, the outer frame itself is an example of a shock-resistant container and its accessories! l
The mechanical strength of the assembly is not affected by this impact. The outer frame is designed to deform without affecting the container, and when the deformation becomes significant, it can be easily changed because it can be disassembled and replaced. .

This therefore has the added advantage of being able to be adapted to the dimensions of each user's cylinder receptacle.

As a variant, the evaporator heater 20 can include tubes distributed at each corner of the outer shell or can be formed by tubes wound helically around the foam of the container 3.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the low-temperature liquid storage steelmaking according to the present invention. FIG. 2 is a plan view of this storage device. FIG. 3 is a diagrammatic plan view of a vehicle for achieving mixed delivery of a cylinder receiver and a device according to the invention; In the drawing, C is a frame, J is a container, 5 is a passage for the fork of a lift truck, /2d is a filling passage, lS is a safety inspection device, /l, , /ri, /8 is a quick pressurization circuit, 20 indicates an evaporator heater. Paris, Squar, De, L'Avenue, Du, Boparis, Rue, Gazin, 19 Tourny, Nez, Ruel, De, U, Mal procedural correction power formula) % formula % 1, Indication of the case 1988 Patent No. 11005 3. Relationship with the case of the person making the amendment Address of the patent applicant Paris, France 7. K, D, Orsay, 75 No. 4, Agent 6, Contents of amendment

Claims (1)

Claims: 1. A gas delivery assembly of the type with juxtaposable cylinder receivers, said assembly further comprising at least one cryogenic liquid storage and delivery device, said device having a dual case. and a parallelepiped frame, the container comprising:
maintained in position within said frame, said frame completely surrounding said container and comprising handling means, said frame comprising:
An assembly characterized in that, in plan view, it has dimensions substantially equal to the dimensions of two or more juxtaposed cylinder receivers. 2. An assembly according to claim 1, wherein the container has an irremovable liquid residue, preferably on the order of 5% of its volume. 3. An assembly according to claim 2, wherein the container has a liquid withdrawal tube that descends to a level located above the bottom of the container and a pressure tube that rises to substantially this level. 4. Assembly according to any one of claims 1 to 3, wherein the handling means consist of a lifting ring and a passage for the fork of a lift truck in the base of the frame. 5. An assembly according to any one of claims 1 to 4, wherein the container comprises an atmospheric pressure evaporator heater located within the frame. 6. The assembly of claim 5, wherein the evaporator heater comprises a vertical tube located at the corner of the frame and having fins. 7. The assembly of claim 6, wherein the evaporator heater comprises tubes having fins located at four corners of the frame. 8. An assembly according to claim 6, in particular in which the frame has a rectangular cross-sectional shape and the evaporator heater comprises a pair of tubes with fins connected in series, both located at the same corner of the frame. Three-dimensional. 9. An assembly according to any one of claims 1 to 9, wherein the evaporator heater comprises a tube helically wound around the container. 10. The container according to claims 1 to 9 is equipped with utilization accessories such as a filling passage with a valve, a safety check device and a quick pressurization circuit, all of these accessories being arranged in the frame. The assembly according to any one of the preceding paragraphs. 11. An assembly according to any one of claims 1 to 10, wherein the capacity of the container is of the order of 450 liters.