JP3076260U - Multi-valve with pipe connection function - Google Patents

Abstract

(57) [Problem] To easily manufacture a storage tank for storing liquefied petroleum gas. SOLUTION: A fitting portion of a holder to which one end of a pipe is fixed is connected to a mounting portion provided at one end of a valve housing which is mounted from the outside of a liquefied petroleum gas storage tank. After the tip is inserted into the storage tank from the flange, the mounting portion is fixed to a flange provided on the wall of the storage tank.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a multi-valve that facilitates construction of a tank for storing liquefied petroleum gas (LPG), and allows a pipe disposed in the tank to be connected later from the outside of the tank.

[0002]

[Prior art]

 Conventionally, when a storage tank for storing liquefied petroleum gas or the like is constructed, as shown in FIG. 1, a flange 3 for mounting various valves is provided in a hole 3 provided at a predetermined position of a wall portion 2 located on the body of the tank 1 as shown in FIG. Parts 4 and 4a are provided respectively. Then, one end of each of the pipes 6 and 6a is fixed from the rear surface of the flange portion, that is, the inside of the tank by welding or the like, to perform a tank manufacturing operation.

[0003] The pipes 6 and 6a are used, for example, for mounting a gas extraction valve for extracting gas vaporized in the tank to the outside and a pressure equalizing valve for adjusting the pressure in the tank and the pressure in the tank lorry to the same value. One end of each of the pipes 6, 6a is connected to a rear surface of the flange portion 4, 4a attached to the wall portion 2 of the tank.

[0004] The other end of the pipe 6, that is, the upper end obtained by curving the rear end upward, is installed so as to be located in the space 7 above the liquid level L located above the tank. In addition, the other end of the pipe 6a to which one end is connected, that is, the lower end whose rear end is curved downward, is provided on the rear surface of the flange portion 4a for attaching a liquid extraction valve for extracting the liquefied gas in the tank to the outside. , Located at the bottom of the tank.

When the storage tank 1 is manufactured as described above, flanges 4 and 4 a for mounting various valves by opening holes 3 in advance are provided at predetermined positions on the wall 2 of the tank. The pipe 6 is inserted into the tank and the pipe 6 is disposed in the tank. Therefore, connection work for each pipe had to be performed from the inside of the tank. Then, pipes are connected to the rear surfaces of the respective flange portions in the tank, and then the upper side portion 1a or the lower side portion 1b of the tank is fixed to complete the storage tank 1.

[0006]

[Problems to be solved by the invention]

 As described above, since the pipes 6 and 6a having a different structure from the storage tank 1 are simultaneously arranged in the tank when manufacturing the tank, the number of manufacturing processes for this type of storage tank increases, and the construction period is shortened. It had the disadvantage that it became longer and the cost increased. Furthermore, if there was a change in the design of the valve mounting position between the time the storage tank was ordered and the time it was completed, there was little versatility.

That is, even if the flange portion 4 can be attached from another portion of the tank wall portion 2 which has been changed or a hole 3 can be newly formed and the outside of the tank 1 can be attached, the pipe 6 is attached to the rear surface of the flange portion. Cannot be fixed at one end. Therefore, it is necessary to provide a hole for the worker to enter in the tank, or to form an opening (not shown) in the tank in advance for the worker to enter. However, there is a problem that the tank is complicated and large-scale, the cost is increased, and the completion time of the tank is delayed.

An object of the present invention is to make it possible to attach a pipe provided inside a storage tank at the same time as a valve is attached to a flange section provided on a wall surface of the tank.

[0009]

[Means for Solving the Problems]

 The present invention provides a multi-valve attached to a liquefied petroleum gas storage tank as a means for solving the above-mentioned problems, wherein a concave portion and an annular projection are provided on an end surface of an attachment portion provided at one end of a valve housing attached from the outside of the storage tank. Parts are formed concentrically, and mounting parts are provided on the outer periphery having mounting holes provided at intervals corresponding to screw holes provided at regular intervals on the end face of the annular convex part, and the concave part is formed at the tip. A holder having a fitting portion connected to the inlet portion, an O-ring attached to the fitting portion, and a pipe connecting portion for connecting one end of a pipe arranged in the storage tank is provided at a rear end. The fitting portion of the holder, in which one end of the pipe is fixed to the pipe connecting portion, is fitted into the recess of the mounting portion to fix the mounting piece to the end face of the annular convex portion. Mounting part is provided on the wall of the storage tank Characterized in that to fix the flange portion formed on a larger diameter than the pipe. Therefore, the pipe can be arranged in the storage tank at the same time when the valve is mounted.

[0010] The valve housing according to the present invention can function a plurality of valves by providing one pipe for mounting a plurality of valves.

[0011] A second invention is a multi-valve attached to a liquefied petroleum gas storage tank. The multi-valve has a larger diameter than a pipe in a concave portion of an attachment portion provided at one end of a valve housing attached from the outside of the storage tank. One end of a pipe inserted into the formed flange portion and disposed in the storage tank was fixed, and one end was fixed to a mounting portion provided on one end of the valve housing from the flange portion provided on the wall portion of the storage tank. After the rear part of the pipe is inserted, the mounting part of the valve housing is fixed to the flange part. Therefore, the number of parts is small, and the pipe can be easily arranged later in the tank and attached to the flange.

[0012]

[Embodiment of the invention]

 A first embodiment according to the present invention will be described with reference to FIGS. 3 to 5. A hole 3 for mounting a valve is provided at a predetermined position on a wall portion 2 of a storage tank 1 for storing LP gas. The flange portion 4 having a diameter larger than the diameter of the pipe 6 to be mounted is attached. In order to attach the flange portion 4 to the hole 3, the attaching operation can be performed from outside the tank. Reference numeral 8 denotes a first valve housing integrally provided with various valves, for example, a plurality of valves such as a pressure equalizing valve, a gas extraction valve, and a safety valve, and at the rear end thereof, a tank is provided on the surface of the flange 4. A mounting portion 9 for mounting from the front side is formed.

A slightly large-diameter concave portion 11 is provided concentrically with a through hole 10 formed at the center of the mounting portion 9, and a larger-diameter annular convex portion 13 is projected outside the concave portion. It is formed. A plurality of screw holes 14 are provided concentrically at regular intervals on the end face of the annular projection. Further, holes 9a for fixing to the flange portion are provided at substantially four corners of the mounting portion 9. One end of the pipe 6 is directly caulked in the recessed portion 33 and connected and fixed by brazing, welding, screwing, or the like.

The pipe 6 is provided in the storage tank 1, and has a rear portion curved upward to have a predetermined length. The pipe 6a has a rear portion curved downward. The front ends of the pipes 6 and 6a are fixed to a holder 15 to be described later, and the holder is fixed to an end face of the mounting portion 9 of the first valve housing 8.

A through hole 16 having the same diameter as the through hole 10 provided at the center of the mounting portion 9 is formed at the center of the holder 15, and the front end of the holder 15 has an end face of the mounting portion 9. A fitting portion 17 is formed to fit into the concave portion 11 provided at the center, and an airtight O-ring 19 is accommodated in an annular groove 18 provided on the outer peripheral surface of the fitting portion.

Further, on the outer periphery of the intermediate portion of the holder 15, there is provided a mounting portion piece 20 for mounting on the end face of the annular convex portion 13, and the mounting portion piece is aligned with the screw hole 14. A plurality of mounting holes 21 are formed at the same interval. One end of the pipe 6 is connected and fixed in the connecting portion 23 provided at the rear end of the holder 15 by brazing, caulking, welding, screwing, or the like.

FIG. 6 shows a second embodiment of the present invention, in which a second valve housing is used to attach to a tank. The valve housing 30 is a storage tank for storing LP gas. The tank 1 is attached from the rear side to a flange 4 attached to a hole 3 provided at a predetermined position on a wall 2 of the tank 1. The valve housing 30 is formed integrally with various valves, for example, a plurality of valves such as a pressure equalizing valve, a gas extracting valve, and a safety valve. A mounting portion 31 for mounting from the front side is provided.

A concave portion 33 is provided concentrically with a through hole 32 formed at the center of the mounting portion 31, and an annular convex portion 34 is formed to protrude outside the concave portion, thereby forming the mounting portion 31. Holes 35 for fixing to the flange portion are provided at approximately four corners of the. In the recess 33, one end of the pipe 6 is directly brazed, caulked, welded, screwed, or the like, and connected and fixed.

Next, the operation of the embodiment according to the present invention will be described. Only the flange portion 4 is attached to a predetermined portion of the wall portion 2 of the tank 1. In this case, a hole 3 may be newly formed in the wall surface 2 of the tank and the flange portion 4 may be attached. Further, the first valve housing 8 having the mounting portion 9 to be mounted on the front end surface (outside portion of the tank) of the flange portion is facilitated.

In order to attach the valve housing 8 to the flange portion 4, a holder 15 and a pipe 6 to be attached to an end face of the attachment portion 9 are prepared. For example, when the pipe 6 is adapted to a gas extraction valve or a pressure equalizing valve, the rear end of the pipe 6 disposed in the tank is bent upward as shown in FIG. 1 and the height is adjusted. is there. In this case, exact precision is not required and can be adjusted outside the tank.

Further, the tip of the pipe 6 is appropriately fixed to a pipe connecting portion 23 provided at the rear end of the holder 15 to integrally connect the holder 15 and the pipe. The fitting part 17 with the O-ring provided at the tip of the holder 15 is fitted to the recessed part 11 provided in the mounting part 9 provided at one end of the valve housing 8. Further, the mounting hole 21 of the mounting portion piece 20 and the screw hole 14 provided on the end face of the annular projection 13 of the mounting portion 9 are aligned with each other and fixed by bolts. In this case, both the pipe 6 and the mounting portion 9 provided on the valve housing 8 are located outside the tank.

Next, the rear end of the pipe 6 is inserted into the flange portion 4 from the outside of the tank, and the mounting portion 9 to which the tip of the pipe is fixed is fixed to the front surface of the flange portion 4 with bolts 9a. In this case, the pipe 6 can be attached to the flange portion 4 of the tank simultaneously with the attachment of the first valve housing 8 to which various valves are attached.

In this case, even if the material of the mounting portion 9 and the material of the pipe 6 are different, the holder 15 fixed to the end of the pipe is fixed by the mounting screw 15a, so that there is no problem. Of course, since the holder 15 is made of the same material as the pipe 6, it can be easily fixed by brazing or welding.

The attachment to the flange portion 4 using the second valve housing 30 is performed by directly caulking one end of the pipe 6 into the recessed portion 33 of the attachment portion 31 and connecting the pipe 6 by welding or screwing. It sticks. In this case, since the holder is not used, the number of parts is small, and the holder can be easily mounted.

However, if the material of the attachment portion 31 and the material of the pipe 6 are different, brazing or welding may be difficult, and the number of parts is reduced because the method is limited to caulking or screwing. Work may be difficult.

Next, the rear side of the pipe 6 is inserted into the flange portion 4 from outside the tank, and the mounting portion 31 to which the pipe 6 is fixed is fixed to the front surface of the flange portion 4 with bolts 9a. The housing 30 and the pipe 6 can be attached to the flange portion 4.

[0027]

[Effect of the invention]

 According to the first aspect of the present invention, since the holder connected to the pipe is fixed to the mounting portion of the valve housing and the mounting portion is mounted on the flange portion, the mounting of the pipe is easy, the structure of the tank is simple, and the manufacturing cost is low. It is economical. Even if the material of the pipe is different from that of the mounting part, the holder is connected to the end of the pipe by a bolt, and the holder is fixed to the mounting part by bolts. Can be fixed. Furthermore, the pipe can be easily arranged and mounted in the tank even when the valve mounting position is changed or a new valve is mounted later.

According to the second aspect of the present invention, since a plurality of valves are mounted on the valve housing, there is an advantage that a plurality of valves can be operated by attaching one pipe.

According to a third aspect of the present invention, one end of the pipe is directly fixed to the mounting portion of the valve housing, and the mounting portion is mounted on the flange portion, so that the pipe can be mounted on the storage tank later. Moreover, by mounting the valve on the valve housing, the pipe can be arranged in the tank at the same time as the valve is mounted. Therefore, the pipe can be easily arranged in the tank even when the valve mounting position is changed or a new valve is mounted.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a conventional storage tank for storing a liquefied gas.

FIG. 2 is a cross-sectional view of a main part showing a flange portion of a tank containing a liquefied gas according to the present invention.

FIG. 3 is a cross-sectional view showing a mounting state of the first multi-valve according to the present invention.

FIG. 4 is an enlarged sectional view of a main part showing a connection part between one end of a pipe and a first multi-valve.

FIG. 5 is an explanatory view showing an attachment portion to a tank provided in a first multi-valve.

FIG. 6 is a cross-sectional view showing a mounting state of the second multi-valve according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage tank 2 Wall part 4 Flange part 6 Pipe 8 First multi-valve 9 Attachment part 10 Through hole 11 Depressed part 13 Annular convex part 14 Screw hole 15 Holder 16 Through hole 18 Annular groove 20 Attachment piece 21 Attachment hole 23 Pipe connecting part 30 Second multi-valve 31 Mounting part 32 Through hole 33 Recessed part 34 Annular convex part 35 Screw hole

Claims (3)

[Utility model registration claims] 1. A multi-valve mounted on a liquefied petroleum gas storage tank, wherein a concave portion and an annular convex portion are formed concentrically on an end surface of a mounting portion provided at one end of a valve housing mounted from the outside of the storage tank. An outer peripheral portion has a mounting piece having mounting holes provided at intervals corresponding to screw holes provided at regular intervals on an end surface of the annular convex portion, and a fitting portion connected to the concave portion at the tip. And a holder provided with a pipe connecting portion at a rear end for connecting one end of a pipe disposed in the storage tank by attaching an O-ring to the fitting portion, and forming one end of the pipe with the one end of the pipe. The fitting portion of the holder fixed to the pipe connecting portion is fitted to the recess of the mounting portion to fix the mounting piece to the end surface of the annular convex portion, and the mounting portion is attached to the wall surface of the storage tank. Formed larger than the pipe provided Multivalve having a pipe connecting function, characterized in that to fix the flange portion. 2. The multi-valve having a pipe connection function according to claim 1, wherein the valve housing is provided with a plurality of valves. 3. A multi-valve attached to a liquefied petroleum gas storage tank, wherein a flange formed to have a larger diameter than a pipe is provided in a concave portion of an attachment portion provided at one end of a valve housing which is attached from the outside of the storage tank. Into the storage tank, and one end of the pipe fixed to one end of a pipe provided from the flange portion provided on the wall portion of the storage tank to the mounting portion provided on one end of the valve housing. A multi-valve having a pipe connection function, wherein the mounting portion of the valve housing is fixed to the flange portion after the operation.